diff --git a/Cronet/tests/OWNERS b/Cronet/tests/OWNERS
deleted file mode 100644
index a35a789..0000000
--- a/Cronet/tests/OWNERS
+++ /dev/null
@@ -1,8 +0,0 @@
-# Bug component: 31808
-
-set noparent
-file:platform/packages/modules/Connectivity:main:/OWNERS_core_networking_xts
-
-# TODO: Temp ownership to develop cronet CTS
-colibie@google.com #{LAST_RESORT_SUGGESTION}
-prohr@google.com #{LAST_RESORT_SUGGESTION}
diff --git a/Cronet/tests/common/Android.bp b/Cronet/tests/common/Android.bp
deleted file mode 100644
index edeb0b3..0000000
--- a/Cronet/tests/common/Android.bp
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright (C) 2023 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-// Tests in this folder are included both in unit tests and CTS.
-// They must be fast and stable, and exercise public or test APIs.
-
-package {
-    default_team: "trendy_team_fwk_core_networking",
-    // See: http://go/android-license-faq
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-// TODO: Consider merging with ConnectivityCoverageTests which is a collection of all
-// Connectivity tests being used for coverage. This will depend on how far we decide to
-// go with merging NetHttp and Tethering targets.
-android_test {
-    name: "NetHttpCoverageTests",
-    enforce_default_target_sdk_version: true,
-    min_sdk_version: "30",
-    test_suites: [
-        "general-tests",
-        "mts-tethering",
-    ],
-    static_libs: [
-        "modules-utils-native-coverage-listener",
-        "CtsNetHttpTestsLib",
-        "NetHttpTestsLibPreJarJar",
-    ],
-    jarjar_rules: ":net-http-test-jarjar-rules",
-    compile_multilib: "both", // Include both the 32 and 64 bit versions
-    jni_libs: [
-        "cronet_aml_components_cronet_android_cronet_tests__testing",
-        "cronet_aml_third_party_netty_tcnative_netty_tcnative_so__testing",
-    ],
-    data: [":cronet_javatests_resources"],
-}
diff --git a/Cronet/tests/common/AndroidManifest.xml b/Cronet/tests/common/AndroidManifest.xml
deleted file mode 100644
index b00fc90..0000000
--- a/Cronet/tests/common/AndroidManifest.xml
+++ /dev/null
@@ -1,32 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          xmlns:tools="http://schemas.android.com/tools"
-          package="com.android.net.http.tests.coverage">
-
-    <!-- NetHttpCoverageTests combines CtsNetHttpTestCases and NetHttpTests targets,
-     so permissions and others are declared in their respective manifests -->
-    <application tools:replace="android:label"
-                 android:label="NetHttp coverage tests">
-        <uses-library android:name="android.test.runner" />
-    </application>
-    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
-                     android:targetPackage="com.android.net.http.tests.coverage"
-                     android:label="NetHttp coverage tests">
-    </instrumentation>
-</manifest>
diff --git a/Cronet/tests/common/AndroidTest.xml b/Cronet/tests/common/AndroidTest.xml
deleted file mode 100644
index bded8fb..0000000
--- a/Cronet/tests/common/AndroidTest.xml
+++ /dev/null
@@ -1,62 +0,0 @@
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-<configuration description="Runs coverage tests for NetHttp">
-    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
-        <option name="test-file-name" value="NetHttpCoverageTests.apk" />
-        <option name="install-arg" value="-t" />
-    </target_preparer>
-    <option name="test-tag" value="NetHttpCoverageTests" />
-
-    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
-        <option name="push-file" key="net" value="/storage/emulated/0/chromium_tests_root/net" />
-        <option name="push-file" key="test_server" value="/storage/emulated/0/chromium_tests_root/components/cronet/testing/test_server" />
-    </target_preparer>
-    <!-- Tethering/Connectivity is a SDK 30+ module -->
-    <!-- TODO Switch back to Sdk30 when b/270049141 is fixed -->
-    <object type="module_controller"
-            class="com.android.tradefed.testtype.suite.module.Sdk31ModuleController" />
-    <option name="config-descriptor:metadata" key="mainline-param"
-            value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex" />
-    <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
-        <option name="package" value="com.android.net.http.tests.coverage" />
-        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
-        <!-- b/298380508 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsEnforcedByDefaultEmbeddedProvider" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsIgnoredInNativeCronetEngineBuilderImpl" />
-        <!-- b/316571753 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testBaseFeatureFlagsOverridesEnabled" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAppIdMatches" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAreLoaded" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsEnforcedByDefaultEmbeddedProvider" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAtMinVersion" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAboveMinVersion" />
-        <!-- b/316567693 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestTest#testSSLCertificateError" />
-        <!-- b/316559294 -->
-        <option name="exclude-filter" value="org.chromium.net.NQETest#testQuicDisabled" />
-        <!-- b/316559294 -->
-        <option name="exclude-filter" value="org.chromium.net.NQETest#testPrefsWriteRead" />
-        <!-- b/316554711-->
-        <option name="exclude-filter" value="org.chromium.net.NetworkChangesTest" /> 
-        <!-- b/316550794 -->
-        <option name="exclude-filter" value="org.chromium.net.impl.CronetLoggerTest#testEngineCreation" />
-        <option name="hidden-api-checks" value="false"/>
-        <option name="isolated-storage" value="false"/>
-        <option
-            name="device-listeners"
-            value="com.android.modules.utils.testing.NativeCoverageHackInstrumentationListener" />
-    </test>
-</configuration>
diff --git a/Cronet/tests/cts/Android.bp b/Cronet/tests/cts/Android.bp
deleted file mode 100644
index 92b73d9..0000000
--- a/Cronet/tests/cts/Android.bp
+++ /dev/null
@@ -1,71 +0,0 @@
-//
-// Copyright (C) 2019 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-package {
-    default_team: "trendy_team_fwk_core_networking",
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-android_library {
-    name: "CtsNetHttpTestsLib",
-    defaults: [
-        "cts_defaults",
-    ],
-    sdk_version: "test_current",
-    min_sdk_version: "30",
-    srcs: [
-        "src/**/*.java",
-        "src/**/*.kt",
-    ],
-    static_libs: [
-        "androidx.test.ext.junit",
-        "ctstestrunner-axt",
-        "ctstestserver",
-        "hamcrest-library",
-        "junit",
-        "kotlin-test",
-        "mockito-target",
-        "net-tests-utils",
-        "truth",
-    ],
-    libs: [
-        "android.test.base",
-        "androidx.annotation_annotation",
-        "framework-connectivity",
-        "org.apache.http.legacy",
-    ],
-    lint: {
-        test: true,
-    },
-}
-
-android_test {
-    name: "CtsNetHttpTestCases",
-    defaults: [
-        "cts_defaults",
-    ],
-    enforce_default_target_sdk_version: true,
-    sdk_version: "test_current",
-    min_sdk_version: "30",
-    static_libs: ["CtsNetHttpTestsLib"],
-    // Tag this as a cts test artifact
-    test_suites: [
-        "cts",
-        "general-tests",
-        "mts-tethering",
-        "mcts-tethering",
-    ],
-}
diff --git a/Cronet/tests/cts/AndroidManifest.xml b/Cronet/tests/cts/AndroidManifest.xml
deleted file mode 100644
index 26900b2..0000000
--- a/Cronet/tests/cts/AndroidManifest.xml
+++ /dev/null
@@ -1,35 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
--->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="android.net.http.cts">
-
-    <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
-
-    <application android:networkSecurityConfig="@xml/network_security_config">
-        <uses-library android:name="android.test.runner"/>
-    </application>
-
-    <instrumentation
-        android:name="androidx.test.runner.AndroidJUnitRunner"
-        android:targetPackage="android.net.http.cts"
-        android:label="CTS tests of android.net.http">
-    </instrumentation>
-</manifest>
diff --git a/Cronet/tests/cts/AndroidTest.xml b/Cronet/tests/cts/AndroidTest.xml
deleted file mode 100644
index e0421fd..0000000
--- a/Cronet/tests/cts/AndroidTest.xml
+++ /dev/null
@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2019 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-<configuration description="Config for CTS Cronet test cases">
-    <option name="test-suite-tag" value="cts" />
-    <option name="config-descriptor:metadata" key="component" value="networking" />
-    <!-- Instant apps cannot create sockets. See b/264248246 -->
-    <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
-    <option name="config-descriptor:metadata" key="parameter" value="multi_abi" />
-    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
-    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
-        <option name="cleanup-apks" value="true" />
-        <option name="test-file-name" value="CtsNetHttpTestCases.apk" />
-    </target_preparer>
-    <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
-        <option name="package" value="android.net.http.cts" />
-        <option name="runtime-hint" value="10s" />
-    </test>
-
-    <!-- Only run CtsNetHttpTestCases in MTS if the Tethering Mainline module is installed. -->
-    <object type="module_controller"
-            class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
-        <option name="mainline-module-package-name" value="com.google.android.tethering" />
-    </object>
-</configuration>
diff --git a/Cronet/tests/cts/res/xml/network_security_config.xml b/Cronet/tests/cts/res/xml/network_security_config.xml
deleted file mode 100644
index 7d7530b..0000000
--- a/Cronet/tests/cts/res/xml/network_security_config.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<!--
-  ~ Copyright (C) 2022 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<network-security-config>
-    <domain-config cleartextTrafficPermitted="true">
-        <domain includeSubdomains="true">localhost</domain>
-    </domain-config>
-</network-security-config>
\ No newline at end of file
diff --git a/Cronet/tests/cts/src/android/net/http/cts/BidirectionalStreamTest.kt b/Cronet/tests/cts/src/android/net/http/cts/BidirectionalStreamTest.kt
deleted file mode 100644
index 464862d..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/BidirectionalStreamTest.kt
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.content.Context
-import android.net.http.BidirectionalStream
-import android.net.http.HttpEngine
-import android.net.http.cts.util.TestBidirectionalStreamCallback
-import android.net.http.cts.util.TestBidirectionalStreamCallback.ResponseStep
-import android.net.http.cts.util.assumeOKStatusCode
-import android.net.http.cts.util.skipIfNoInternetConnection
-import android.os.Build
-import androidx.test.core.app.ApplicationProvider
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import com.android.testutils.SkipPresubmit
-import com.google.common.truth.Truth.assertThat
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import org.hamcrest.MatcherAssert
-import org.hamcrest.Matchers
-import org.junit.After
-import org.junit.AssumptionViolatedException
-import org.junit.Before
-import org.junit.runner.RunWith
-
-private const val URL = "https://source.android.com"
-
-/**
- * This tests uses a non-hermetic server. Instead of asserting, assume the next callback. This way,
- * if the request were to fail, the test would just be skipped instead of failing.
- */
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class BidirectionalStreamTest {
-    private val context: Context = ApplicationProvider.getApplicationContext()
-    private val callback = TestBidirectionalStreamCallback()
-    private val httpEngine = HttpEngine.Builder(context).build()
-    private var stream: BidirectionalStream? = null
-
-    @Before
-    fun setUp() {
-        skipIfNoInternetConnection(context)
-    }
-
-    @After
-    @Throws(Exception::class)
-    fun tearDown() {
-        httpEngine.shutdown()
-    }
-
-    private fun createBidirectionalStreamBuilder(url: String): BidirectionalStream.Builder {
-        return httpEngine.newBidirectionalStreamBuilder(url, callback.executor, callback)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    @SkipPresubmit(reason = "b/293141085 Confirm non-flaky and move to presubmit after SLO")
-    fun testBidirectionalStream_GetStream_CompletesSuccessfully() {
-        stream = createBidirectionalStreamBuilder(URL).setHttpMethod("GET").build()
-        stream!!.start()
-        // We call to a real server and hence the server may not be reachable, cancel this stream
-        // and rethrow the exception before tearDown,
-        // otherwise shutdown would fail with active request error.
-        try {
-            callback.assumeCallback(ResponseStep.ON_SUCCEEDED)
-        } catch (e: AssumptionViolatedException) {
-            stream!!.cancel()
-            callback.blockForDone()
-            throw e
-        }
-
-        val info = callback.mResponseInfo
-        assumeOKStatusCode(info)
-        MatcherAssert.assertThat(
-            "Received byte count must be > 0", info.receivedByteCount, Matchers.greaterThan(0L))
-        assertEquals("h2", info.negotiatedProtocol)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getHttpMethod() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val method = "GET"
-
-        builder.setHttpMethod(method)
-        stream = builder.build()
-        assertThat(stream!!.getHttpMethod()).isEqualTo(method)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_hasTrafficStatsTag() {
-        val builder = createBidirectionalStreamBuilder(URL)
-
-        builder.setTrafficStatsTag(10)
-        stream = builder.build()
-        assertThat(stream!!.hasTrafficStatsTag()).isTrue()
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getTrafficStatsTag() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val trafficStatsTag = 10
-
-        builder.setTrafficStatsTag(trafficStatsTag)
-        stream = builder.build()
-        assertThat(stream!!.getTrafficStatsTag()).isEqualTo(trafficStatsTag)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_hasTrafficStatsUid() {
-        val builder = createBidirectionalStreamBuilder(URL)
-
-        builder.setTrafficStatsUid(10)
-        stream = builder.build()
-        assertThat(stream!!.hasTrafficStatsUid()).isTrue()
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getTrafficStatsUid() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val trafficStatsUid = 10
-
-        builder.setTrafficStatsUid(trafficStatsUid)
-        stream = builder.build()
-        assertThat(stream!!.getTrafficStatsUid()).isEqualTo(trafficStatsUid)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getHeaders_asList() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val expectedHeaders = mapOf(
-          "Authorization" to "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==",
-          "Max-Forwards" to "10",
-          "X-Client-Data" to "random custom header content").entries.toList()
-
-        for (header in expectedHeaders) {
-            builder.addHeader(header.key, header.value)
-        }
-
-        stream = builder.build()
-        assertThat(stream!!.getHeaders().getAsList()).containsAtLeastElementsIn(expectedHeaders)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getHeaders_asMap() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val expectedHeaders = mapOf(
-          "Authorization" to listOf("Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="),
-          "Max-Forwards" to listOf("10"),
-          "X-Client-Data" to listOf("random custom header content"))
-
-        for (header in expectedHeaders) {
-            builder.addHeader(header.key, header.value.get(0))
-        }
-
-        stream = builder.build()
-        assertThat(stream!!.getHeaders().getAsMap()).containsAtLeastEntriesIn(expectedHeaders)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_getPriority() {
-        val builder = createBidirectionalStreamBuilder(URL)
-        val priority = BidirectionalStream.STREAM_PRIORITY_LOW
-
-        builder.setPriority(priority)
-        stream = builder.build()
-        assertThat(stream!!.getPriority()).isEqualTo(priority)
-    }
-
-    @Test
-    @Throws(Exception::class)
-    fun testBidirectionalStream_isDelayRequestHeadersUntilFirstFlushEnabled() {
-        val builder = createBidirectionalStreamBuilder(URL)
-
-        builder.setDelayRequestHeadersUntilFirstFlushEnabled(true)
-        stream = builder.build()
-        assertThat(stream!!.isDelayRequestHeadersUntilFirstFlushEnabled()).isTrue()
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/CallbackExceptionTest.kt b/Cronet/tests/cts/src/android/net/http/cts/CallbackExceptionTest.kt
deleted file mode 100644
index 1405ed9..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/CallbackExceptionTest.kt
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.content.Context
-import android.net.http.CallbackException
-import android.net.http.HttpEngine
-import android.net.http.cts.util.HttpCtsTestServer
-import android.net.http.cts.util.TestUrlRequestCallback
-import android.net.http.cts.util.TestUrlRequestCallback.FailureType
-import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep
-import android.os.Build
-import androidx.test.core.app.ApplicationProvider
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertIs
-import kotlin.test.assertSame
-import kotlin.test.assertTrue
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class CallbackExceptionTest {
-
-    @Test
-    fun testCallbackException_returnsInputParameters() {
-        val message = "failed"
-        val cause = Throwable("exception")
-        val callbackException = object : CallbackException(message, cause) {}
-
-        assertEquals(message, callbackException.message)
-        assertSame(cause, callbackException.cause)
-    }
-
-    @Test
-    fun testCallbackException_thrownFromUrlRequest() {
-        val context: Context = ApplicationProvider.getApplicationContext()
-        val server = HttpCtsTestServer(context)
-        val httpEngine = HttpEngine.Builder(context).build()
-        val callback = TestUrlRequestCallback()
-        callback.setFailure(FailureType.THROW_SYNC, ResponseStep.ON_RESPONSE_STARTED)
-        val request = httpEngine
-            .newUrlRequestBuilder(server.successUrl, callback.executor, callback)
-            .build()
-
-        request.start()
-        callback.blockForDone()
-
-        assertTrue(request.isDone)
-        assertIs<CallbackException>(callback.mError)
-        server.shutdown()
-        httpEngine.shutdown()
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/ConnectionMigrationOptionsTest.kt b/Cronet/tests/cts/src/android/net/http/cts/ConnectionMigrationOptionsTest.kt
deleted file mode 100644
index 10c7f3c..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/ConnectionMigrationOptionsTest.kt
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.net.http.ConnectionMigrationOptions
-import android.net.http.ConnectionMigrationOptions.MIGRATION_OPTION_ENABLED
-import android.net.http.ConnectionMigrationOptions.MIGRATION_OPTION_UNSPECIFIED
-import android.os.Build
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class ConnectionMigrationOptionsTest {
-
-    @Test
-    fun testConnectionMigrationOptions_defaultValues() {
-        val options =
-                ConnectionMigrationOptions.Builder().build()
-
-        assertEquals(MIGRATION_OPTION_UNSPECIFIED, options.allowNonDefaultNetworkUsage)
-        assertEquals(MIGRATION_OPTION_UNSPECIFIED, options.defaultNetworkMigration)
-        assertEquals(MIGRATION_OPTION_UNSPECIFIED, options.pathDegradationMigration)
-    }
-
-    @Test
-    fun testConnectionMigrationOptions_enableDefaultNetworkMigration_returnSetValue() {
-        val options =
-            ConnectionMigrationOptions.Builder()
-                    .setDefaultNetworkMigration(MIGRATION_OPTION_ENABLED)
-                    .build()
-
-        assertEquals(MIGRATION_OPTION_ENABLED, options.defaultNetworkMigration)
-    }
-
-    @Test
-    fun testConnectionMigrationOptions_enablePathDegradationMigration_returnSetValue() {
-        val options =
-            ConnectionMigrationOptions.Builder()
-                    .setPathDegradationMigration(MIGRATION_OPTION_ENABLED)
-                    .build()
-
-        assertEquals(MIGRATION_OPTION_ENABLED, options.pathDegradationMigration)
-    }
-
-    @Test
-    fun testConnectionMigrationOptions_allowNonDefaultNetworkUsage_returnSetValue() {
-        val options =
-                ConnectionMigrationOptions.Builder()
-                        .setAllowNonDefaultNetworkUsage(MIGRATION_OPTION_ENABLED).build()
-
-        assertEquals(MIGRATION_OPTION_ENABLED, options.allowNonDefaultNetworkUsage)
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/DnsOptionsTest.kt b/Cronet/tests/cts/src/android/net/http/cts/DnsOptionsTest.kt
deleted file mode 100644
index 56802c6..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/DnsOptionsTest.kt
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.net.http.DnsOptions
-import android.net.http.DnsOptions.DNS_OPTION_ENABLED
-import android.net.http.DnsOptions.DNS_OPTION_UNSPECIFIED
-import android.os.Build
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import java.time.Duration
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertNotNull
-import kotlin.test.assertNull
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class DnsOptionsTest {
-
-    @Test
-    fun testDnsOptions_defaultValues() {
-        val options = DnsOptions.Builder().build()
-
-        assertEquals(DNS_OPTION_UNSPECIFIED, options.persistHostCache)
-        assertNull(options.persistHostCachePeriod)
-        assertEquals(DNS_OPTION_UNSPECIFIED, options.staleDns)
-        assertNull(options.staleDnsOptions)
-        assertEquals(DNS_OPTION_UNSPECIFIED, options.useHttpStackDnsResolver)
-        assertEquals(DNS_OPTION_UNSPECIFIED,
-                options.preestablishConnectionsToStaleDnsResults)
-    }
-
-    @Test
-    fun testDnsOptions_persistHostCache_returnSetValue() {
-        val options = DnsOptions.Builder()
-                .setPersistHostCache(DNS_OPTION_ENABLED)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.persistHostCache)
-    }
-
-    @Test
-    fun testDnsOptions_persistHostCachePeriod_returnSetValue() {
-        val period = Duration.ofMillis(12345)
-        val options = DnsOptions.Builder().setPersistHostCachePeriod(period).build()
-
-        assertEquals(period, options.persistHostCachePeriod)
-    }
-
-    @Test
-    fun testDnsOptions_enableStaleDns_returnSetValue() {
-        val options = DnsOptions.Builder()
-                .setStaleDns(DNS_OPTION_ENABLED)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.staleDns)
-    }
-
-    @Test
-    fun testDnsOptions_useHttpStackDnsResolver_returnsSetValue() {
-        val options = DnsOptions.Builder()
-                .setUseHttpStackDnsResolver(DNS_OPTION_ENABLED)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.useHttpStackDnsResolver)
-    }
-
-    @Test
-    fun testDnsOptions_preestablishConnectionsToStaleDnsResults_returnsSetValue() {
-        val options = DnsOptions.Builder()
-                .setPreestablishConnectionsToStaleDnsResults(DNS_OPTION_ENABLED)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED,
-                options.preestablishConnectionsToStaleDnsResults)
-    }
-
-    @Test
-    fun testDnsOptions_setStaleDnsOptions_returnsSetValues() {
-        val staleOptions = DnsOptions.StaleDnsOptions.Builder()
-                .setAllowCrossNetworkUsage(DNS_OPTION_ENABLED)
-                .setFreshLookupTimeout(Duration.ofMillis(1234))
-                .build()
-        val options = DnsOptions.Builder()
-                .setStaleDns(DNS_OPTION_ENABLED)
-                .setStaleDnsOptions(staleOptions)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.staleDns)
-        assertEquals(staleOptions, options.staleDnsOptions)
-    }
-
-    @Test
-    fun testStaleDnsOptions_defaultValues() {
-        val options = DnsOptions.StaleDnsOptions.Builder().build()
-
-        assertEquals(DNS_OPTION_UNSPECIFIED, options.allowCrossNetworkUsage)
-        assertNull(options.freshLookupTimeout)
-        assertNull(options.maxExpiredDelay)
-        assertEquals(DNS_OPTION_UNSPECIFIED, options.useStaleOnNameNotResolved)
-    }
-
-    @Test
-    fun testStaleDnsOptions_allowCrossNetworkUsage_returnsSetValue() {
-        val options = DnsOptions.StaleDnsOptions.Builder()
-                .setAllowCrossNetworkUsage(DNS_OPTION_ENABLED).build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.allowCrossNetworkUsage)
-    }
-
-    @Test
-    fun testStaleDnsOptions_freshLookupTimeout_returnsSetValue() {
-        val duration = Duration.ofMillis(12345)
-        val options = DnsOptions.StaleDnsOptions.Builder().setFreshLookupTimeout(duration).build()
-
-        assertNotNull(options.freshLookupTimeout)
-        assertEquals(duration, options.freshLookupTimeout!!)
-    }
-
-    @Test
-    fun testStaleDnsOptions_useStaleOnNameNotResolved_returnsSetValue() {
-        val options = DnsOptions.StaleDnsOptions.Builder()
-                .setUseStaleOnNameNotResolved(DNS_OPTION_ENABLED)
-                .build()
-
-        assertEquals(DNS_OPTION_ENABLED, options.useStaleOnNameNotResolved)
-    }
-
-    @Test
-    fun testStaleDnsOptions_maxExpiredDelayMillis_returnsSetValue() {
-        val duration = Duration.ofMillis(12345)
-        val options = DnsOptions.StaleDnsOptions.Builder().setMaxExpiredDelay(duration).build()
-
-        assertNotNull(options.maxExpiredDelay)
-        assertEquals(duration, options.maxExpiredDelay!!)
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java b/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java
deleted file mode 100644
index f86ac29..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/HttpEngineTest.java
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts;
-
-import static android.net.http.cts.util.TestUtilsKt.assertOKStatusCode;
-import static android.net.http.cts.util.TestUtilsKt.assumeOKStatusCode;
-import static android.net.http.cts.util.TestUtilsKt.skipIfNoInternetConnection;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.containsString;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertTrue;
-
-import android.content.Context;
-import android.net.Network;
-import android.net.http.ConnectionMigrationOptions;
-import android.net.http.DnsOptions;
-import android.net.http.HttpEngine;
-import android.net.http.QuicOptions;
-import android.net.http.UrlRequest;
-import android.net.http.UrlResponseInfo;
-import android.net.http.cts.util.HttpCtsTestServer;
-import android.net.http.cts.util.TestUrlRequestCallback;
-import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep;
-import android.os.Build;
-
-import androidx.test.core.app.ApplicationProvider;
-
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRunner;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mockito;
-
-import java.time.Instant;
-import java.util.Arrays;
-import java.util.Calendar;
-import java.util.Set;
-
-@RunWith(DevSdkIgnoreRunner.class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class HttpEngineTest {
-    private static final String HOST = "source.android.com";
-    private static final String URL = "https://" + HOST;
-
-    private HttpEngine.Builder mEngineBuilder;
-    private TestUrlRequestCallback mCallback;
-    private HttpCtsTestServer mTestServer;
-    private UrlRequest mRequest;
-    private HttpEngine mEngine;
-    private Context mContext;
-
-    @Before
-    public void setUp() throws Exception {
-        mContext = ApplicationProvider.getApplicationContext();
-        skipIfNoInternetConnection(mContext);
-        mEngineBuilder = new HttpEngine.Builder(mContext);
-        mCallback = new TestUrlRequestCallback();
-        mTestServer = new HttpCtsTestServer(mContext);
-    }
-
-    @After
-    public void tearDown() throws Exception {
-        if (mRequest != null) {
-            mRequest.cancel();
-            mCallback.blockForDone();
-        }
-        if (mEngine != null) {
-            mEngine.shutdown();
-        }
-        if (mTestServer != null) {
-            mTestServer.shutdown();
-        }
-    }
-
-    private boolean isQuic(String negotiatedProtocol) {
-        return negotiatedProtocol.startsWith("http/2+quic") || negotiatedProtocol.startsWith("h3");
-    }
-
-    @Test
-    public void testHttpEngine_Default() throws Exception {
-        mEngine = mEngineBuilder.build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(URL, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        // This tests uses a non-hermetic server. Instead of asserting, assume the next callback.
-        // This way, if the request were to fail, the test would just be skipped instead of failing.
-        mCallback.assumeCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        assertEquals("h2", info.getNegotiatedProtocol());
-    }
-
-    @Test
-    public void testHttpEngine_EnableHttpCache() {
-        String url = mTestServer.getCacheableTestDownloadUrl(
-                /* downloadId */ "cacheable-download",
-                /* numBytes */ 10);
-        mEngine =
-                mEngineBuilder
-                        .setStoragePath(mContext.getApplicationInfo().dataDir)
-                        .setEnableHttpCache(
-                                HttpEngine.Builder.HTTP_CACHE_DISK, /* maxSize */ 100 * 1024)
-                        .build();
-
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assumeOKStatusCode(info);
-        assertFalse(info.wasCached());
-
-        mCallback = new TestUrlRequestCallback();
-        builder = mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        assertTrue(info.wasCached());
-    }
-
-    @Test
-    public void testHttpEngine_DisableHttp2() throws Exception {
-        mEngine = mEngineBuilder.setEnableHttp2(false).build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(URL, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        // This tests uses a non-hermetic server. Instead of asserting, assume the next callback.
-        // This way, if the request were to fail, the test would just be skipped instead of failing.
-        mCallback.assumeCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        assertEquals("http/1.1", info.getNegotiatedProtocol());
-    }
-
-    @Test
-    public void testHttpEngine_EnablePublicKeyPinningBypassForLocalTrustAnchors() {
-        String url = mTestServer.getSuccessUrl();
-        // For known hosts, requests should succeed whether we're bypassing the local trust anchor
-        // or not.
-        mEngine = mEngineBuilder.setEnablePublicKeyPinningBypassForLocalTrustAnchors(false).build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
-        mEngine.shutdown();
-        mEngine = mEngineBuilder.setEnablePublicKeyPinningBypassForLocalTrustAnchors(true).build();
-        mCallback = new TestUrlRequestCallback();
-        builder = mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
-        // TODO(b/270918920): We should also test with a certificate not present in the device's
-        // trusted store.
-        // This requires either:
-        // * Mocking the underlying CertificateVerifier.
-        // * Or, having the server return a root certificate not present in the device's trusted
-        //   store.
-        // The former doesn't make sense for a CTS test as it would depend on the underlying
-        // implementation. The latter is something we should support once we write a proper test
-        // server.
-    }
-
-    private byte[] generateSha256() {
-        byte[] sha256 = new byte[32];
-        Arrays.fill(sha256, (byte) 58);
-        return sha256;
-    }
-
-    private Instant instantInFuture(int secondsIntoFuture) {
-        Calendar cal = Calendar.getInstance();
-        cal.add(Calendar.SECOND, secondsIntoFuture);
-        return cal.getTime().toInstant();
-    }
-
-    @Test
-    public void testHttpEngine_AddPublicKeyPins() {
-        // CtsTestServer, when set in SslMode.NO_CLIENT_AUTH (required to trigger
-        // certificate verification, needed by this test), uses a certificate that
-        // doesn't match the hostname. For this reason, CtsTestServer cannot be used
-        // by this test.
-        Instant expirationInstant = instantInFuture(/* secondsIntoFuture */ 100);
-        boolean includeSubdomains = true;
-        Set<byte[]> pinsSha256 = Set.of(generateSha256());
-        mEngine = mEngineBuilder.addPublicKeyPins(
-                HOST, pinsSha256, includeSubdomains, expirationInstant).build();
-
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(URL, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-        mCallback.expectCallback(ResponseStep.ON_FAILED);
-        assertNotNull("Expected an error", mCallback.mError);
-    }
-
-    @Test
-    public void testHttpEngine_EnableQuic() throws Exception {
-        String url = mTestServer.getSuccessUrl();
-        mEngine = mEngineBuilder.setEnableQuic(true).addQuicHint(HOST, 443, 443).build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-    }
-
-    @Test
-    public void testHttpEngine_GetDefaultUserAgent() throws Exception {
-        assertThat(mEngineBuilder.getDefaultUserAgent(), containsString("AndroidHttpClient"));
-        assertThat(mEngineBuilder.getDefaultUserAgent()).contains(HttpEngine.getVersionString());
-    }
-
-    @Test
-    public void testHttpEngine_requestUsesDefaultUserAgent() throws Exception {
-        mEngine = mEngineBuilder.build();
-
-        String url = mTestServer.getUserAgentUrl();
-        UrlRequest request =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback).build();
-        request.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        String receivedUserAgent = extractUserAgent(mCallback.mResponseAsString);
-
-        assertThat(receivedUserAgent).isEqualTo(mEngineBuilder.getDefaultUserAgent());
-    }
-
-    @Test
-    public void testHttpEngine_requestUsesCustomUserAgent() throws Exception {
-        String userAgent = "CtsTests User Agent";
-        mEngine =
-                new HttpEngine.Builder(ApplicationProvider.getApplicationContext())
-                        .setUserAgent(userAgent)
-                        .build();
-
-        String url = mTestServer.getUserAgentUrl();
-        UrlRequest request =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback).build();
-        request.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        String receivedUserAgent = extractUserAgent(mCallback.mResponseAsString);
-
-        assertThat(receivedUserAgent).isEqualTo(userAgent);
-    }
-
-    private static String extractUserAgent(String userAgentResponseBody) {
-        // If someone wants to be evil and have the title HTML tag a part of the user agent,
-        // they'll have to fix this method :)
-        return userAgentResponseBody.replaceFirst(".*<title>", "").replaceFirst("</title>.*", "");
-    }
-
-    @Test
-    public void testHttpEngine_bindToNetwork() throws Exception {
-        // Create a fake Android.net.Network. Since that network doesn't exist, binding to
-        // that should end up in a failed request.
-        Network mockNetwork = Mockito.mock(Network.class);
-        Mockito.when(mockNetwork.getNetworkHandle()).thenReturn(123L);
-        String url = mTestServer.getSuccessUrl();
-
-        mEngine = mEngineBuilder.build();
-        mEngine.bindToNetwork(mockNetwork);
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_FAILED);
-    }
-
-    @Test
-    public void testHttpEngine_unbindFromNetwork() throws Exception {
-        // Create a fake Android.net.Network. Since that network doesn't exist, binding to
-        // that should end up in a failed request.
-        Network mockNetwork = Mockito.mock(Network.class);
-        Mockito.when(mockNetwork.getNetworkHandle()).thenReturn(123L);
-        String url = mTestServer.getSuccessUrl();
-
-        mEngine = mEngineBuilder.build();
-        // Bind to the fake network but then unbind. This should result in a successful
-        // request.
-        mEngine.bindToNetwork(mockNetwork);
-        mEngine.bindToNetwork(null);
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-    }
-
-    @Test
-    public void testHttpEngine_setConnectionMigrationOptions_requestSucceeds() {
-        ConnectionMigrationOptions options = new ConnectionMigrationOptions.Builder().build();
-        mEngine = mEngineBuilder.setConnectionMigrationOptions(options).build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(
-                        mTestServer.getSuccessUrl(), mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-    }
-
-    @Test
-    public void testHttpEngine_setDnsOptions_requestSucceeds() {
-        DnsOptions options = new DnsOptions.Builder().build();
-        mEngine = mEngineBuilder.setDnsOptions(options).build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(
-                        mTestServer.getSuccessUrl(), mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-    }
-
-    @Test
-    public void getVersionString_notEmpty() {
-        assertThat(HttpEngine.getVersionString()).isNotEmpty();
-    }
-
-    @Test
-    public void testHttpEngine_SetQuicOptions_RequestSucceedsWithQuic() throws Exception {
-        String url = mTestServer.getSuccessUrl();
-        QuicOptions options = new QuicOptions.Builder().build();
-        mEngine = mEngineBuilder
-                .setEnableQuic(true)
-                .addQuicHint(HOST, 443, 443)
-                .setQuicOptions(options)
-                .build();
-        UrlRequest.Builder builder =
-                mEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-        mRequest = builder.build();
-        mRequest.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-
-    }
-
-    @Test
-    public void testHttpEngine_enableBrotli_brotliAdvertised() {
-        mEngine = mEngineBuilder.setEnableBrotli(true).build();
-        mRequest =
-                mEngine.newUrlRequestBuilder(
-                        mTestServer.getEchoHeadersUrl(), mCallback.getExecutor(), mCallback)
-                        .build();
-        mRequest.start();
-
-        mCallback.assumeCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertThat(info.getHeaders().getAsMap().get("x-request-header-Accept-Encoding").toString())
-                .contains("br");
-        assertOKStatusCode(info);
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/NetworkExceptionTest.kt b/Cronet/tests/cts/src/android/net/http/cts/NetworkExceptionTest.kt
deleted file mode 100644
index cff54b3..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/NetworkExceptionTest.kt
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.net.http.HttpEngine
-import android.net.http.NetworkException
-import android.net.http.cts.util.TestUrlRequestCallback
-import android.os.Build
-import androidx.test.core.app.ApplicationProvider
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.assertEquals
-import kotlin.test.assertIs
-import kotlin.test.assertSame
-import kotlin.test.assertTrue
-import org.junit.Test
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class NetworkExceptionTest {
-
-    @Test
-    fun testNetworkException_returnsInputParameters() {
-        val message = "failed"
-        val cause = Throwable("thrown")
-        val networkException =
-            object : NetworkException(message, cause) {
-                override fun getErrorCode() = 0
-                override fun isImmediatelyRetryable() = false
-            }
-
-        assertEquals(message, networkException.message)
-        assertSame(cause, networkException.cause)
-    }
-
-    @Test
-    fun testNetworkException_thrownFromUrlRequest() {
-        val httpEngine = HttpEngine.Builder(ApplicationProvider.getApplicationContext()).build()
-        val callback = TestUrlRequestCallback()
-        val request =
-            httpEngine.newUrlRequestBuilder("http://localhost", callback.executor, callback).build()
-
-        request.start()
-        callback.blockForDone()
-
-        assertTrue(request.isDone)
-        assertIs<NetworkException>(callback.mError)
-        httpEngine.shutdown()
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/QuicExceptionTest.kt b/Cronet/tests/cts/src/android/net/http/cts/QuicExceptionTest.kt
deleted file mode 100644
index 2705fc3..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/QuicExceptionTest.kt
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.net.http.QuicException
-import android.os.Build
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class QuicExceptionTest {
-
-    @Test
-    fun testQuicException_returnsInputParameters() {
-        val message = "failed"
-        val cause = Throwable("thrown")
-        val quicException =
-            object : QuicException(message, cause) {
-                override fun getErrorCode() = 0
-                override fun isImmediatelyRetryable() = false
-            }
-
-        assertEquals(message, quicException.message)
-        assertEquals(cause, quicException.cause)
-    }
-
-    // TODO: add test for QuicException triggered from HttpEngine
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt b/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt
deleted file mode 100644
index da0b15c..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/QuicOptionsTest.kt
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.net.http.cts
-
-import android.net.http.QuicOptions
-import android.os.Build
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import com.google.common.truth.Truth.assertThat
-import java.time.Duration
-import kotlin.test.assertFailsWith
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
-import org.junit.Test
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class QuicOptionsTest {
-    @Test
-    fun testQuicOptions_defaultValues() {
-        val quicOptions = QuicOptions.Builder().build()
-        assertThat(quicOptions.allowedQuicHosts).isEmpty()
-        assertThat(quicOptions.handshakeUserAgent).isNull()
-        assertThat(quicOptions.idleConnectionTimeout).isNull()
-        assertFalse(quicOptions.hasInMemoryServerConfigsCacheSize())
-        assertFailsWith(IllegalStateException::class) {
-            quicOptions.inMemoryServerConfigsCacheSize
-        }
-    }
-
-    @Test
-    fun testQuicOptions_quicHostAllowlist_returnsAddedValues() {
-        val quicOptions = QuicOptions.Builder()
-                .addAllowedQuicHost("foo")
-                .addAllowedQuicHost("bar")
-                .addAllowedQuicHost("foo")
-                .addAllowedQuicHost("baz")
-                .build()
-        assertThat(quicOptions.allowedQuicHosts)
-                .containsExactly("foo", "bar", "baz")
-                .inOrder()
-    }
-
-    @Test
-    fun testQuicOptions_idleConnectionTimeout_returnsSetValue() {
-        val timeout = Duration.ofMinutes(10)
-        val quicOptions = QuicOptions.Builder()
-                .setIdleConnectionTimeout(timeout)
-                .build()
-        assertThat(quicOptions.idleConnectionTimeout)
-                .isEqualTo(timeout)
-    }
-
-    @Test
-    fun testQuicOptions_inMemoryServerConfigsCacheSize_returnsSetValue() {
-        val quicOptions = QuicOptions.Builder()
-                .setInMemoryServerConfigsCacheSize(42)
-                .build()
-        assertTrue(quicOptions.hasInMemoryServerConfigsCacheSize())
-        assertThat(quicOptions.inMemoryServerConfigsCacheSize)
-                .isEqualTo(42)
-    }
-
-    @Test
-    fun testQuicOptions_handshakeUserAgent_returnsSetValue() {
-        val userAgent = "test"
-        val quicOptions = QuicOptions.Builder()
-            .setHandshakeUserAgent(userAgent)
-            .build()
-        assertThat(quicOptions.handshakeUserAgent)
-            .isEqualTo(userAgent)
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java b/Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java
deleted file mode 100644
index 3c4d134..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/UrlRequestTest.java
+++ /dev/null
@@ -1,526 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts;
-
-import static android.net.http.cts.util.TestUtilsKt.assertOKStatusCode;
-import static android.net.http.cts.util.TestUtilsKt.skipIfNoInternetConnection;
-
-import static com.google.common.truth.Truth.assertThat;
-
-import static org.hamcrest.MatcherAssert.assertThat;
-import static org.hamcrest.Matchers.greaterThan;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-
-import android.content.Context;
-import android.net.http.HeaderBlock;
-import android.net.http.HttpEngine;
-import android.net.http.HttpException;
-import android.net.http.InlineExecutionProhibitedException;
-import android.net.http.UploadDataProvider;
-import android.net.http.UrlRequest;
-import android.net.http.UrlRequest.Status;
-import android.net.http.UrlResponseInfo;
-import android.net.http.cts.util.HttpCtsTestServer;
-import android.net.http.cts.util.TestStatusListener;
-import android.net.http.cts.util.TestUrlRequestCallback;
-import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep;
-import android.net.http.cts.util.UploadDataProviders;
-import android.os.Build;
-import android.webkit.cts.CtsTestServer;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.test.core.app.ApplicationProvider;
-
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRunner;
-
-import com.google.common.base.Strings;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.net.URLEncoder;
-import java.nio.ByteBuffer;
-import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ArrayBlockingQueue;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-@RunWith(DevSdkIgnoreRunner.class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class UrlRequestTest {
-    private static final Executor DIRECT_EXECUTOR = Runnable::run;
-
-    private TestUrlRequestCallback mCallback;
-    private HttpCtsTestServer mTestServer;
-    private HttpEngine mHttpEngine;
-
-    @Before
-    public void setUp() throws Exception {
-        Context context = ApplicationProvider.getApplicationContext();
-        skipIfNoInternetConnection(context);
-        HttpEngine.Builder builder = new HttpEngine.Builder(context);
-        mHttpEngine = builder.build();
-        mCallback = new TestUrlRequestCallback();
-        mTestServer = new HttpCtsTestServer(context);
-    }
-
-    @After
-    public void tearDown() throws Exception {
-        if (mHttpEngine != null) {
-            mHttpEngine.shutdown();
-        }
-        if (mTestServer != null) {
-            mTestServer.shutdown();
-        }
-    }
-
-    private UrlRequest.Builder createUrlRequestBuilder(String url) {
-        return mHttpEngine.newUrlRequestBuilder(url, mCallback.getExecutor(), mCallback);
-    }
-
-    @Test
-    public void testUrlRequestGet_CompletesSuccessfully() throws Exception {
-        String url = mTestServer.getSuccessUrl();
-        UrlRequest request = createUrlRequestBuilder(url).build();
-        request.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        assertThat("Received byte count must be > 0", info.getReceivedByteCount(), greaterThan(0L));
-    }
-
-    @Test
-    public void testUrlRequestStatus_InvalidBeforeRequestStarts() throws Exception {
-        UrlRequest request = createUrlRequestBuilder(mTestServer.getSuccessUrl()).build();
-        // Calling before request is started should give Status.INVALID,
-        // since the native adapter is not created.
-        TestStatusListener statusListener = new TestStatusListener();
-        request.getStatus(statusListener);
-        statusListener.expectStatus(Status.INVALID);
-    }
-
-    @Test
-    public void testUrlRequestCancel_CancelCalled() throws Exception {
-        UrlRequest request = createUrlRequestBuilder(mTestServer.getSuccessUrl()).build();
-        mCallback.setAutoAdvance(false);
-
-        request.start();
-        mCallback.waitForNextStep();
-        assertSame(mCallback.mResponseStep, ResponseStep.ON_RESPONSE_STARTED);
-
-        request.cancel();
-        mCallback.expectCallback(ResponseStep.ON_CANCELED);
-    }
-
-    @Test
-    public void testUrlRequestPost_EchoRequestBody() {
-        String testData = "test";
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getEchoBodyUrl());
-
-        UploadDataProvider dataProvider = UploadDataProviders.create(testData);
-        builder.setUploadDataProvider(dataProvider, mCallback.getExecutor());
-        builder.addHeader("Content-Type", "text/html");
-        builder.build().start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
-        assertOKStatusCode(mCallback.mResponseInfo);
-        assertEquals(testData, mCallback.mResponseAsString);
-    }
-
-    @Test
-    public void testUrlRequestFail_FailedCalled() {
-        createUrlRequestBuilder("http://0.0.0.0:0/").build().start();
-        mCallback.expectCallback(ResponseStep.ON_FAILED);
-    }
-
-    @Test
-    public void testUrlRequest_directExecutor_allowed() throws InterruptedException {
-        TestUrlRequestCallback callback = new TestUrlRequestCallback();
-        callback.setAllowDirectExecutor(true);
-        UrlRequest.Builder builder = mHttpEngine.newUrlRequestBuilder(
-                mTestServer.getEchoBodyUrl(), DIRECT_EXECUTOR, callback);
-        UploadDataProvider dataProvider = UploadDataProviders.create("test");
-        builder.setUploadDataProvider(dataProvider, DIRECT_EXECUTOR);
-        builder.addHeader("Content-Type", "text/plain;charset=UTF-8");
-        builder.setDirectExecutorAllowed(true);
-        builder.build().start();
-        callback.blockForDone();
-
-        if (callback.mOnErrorCalled) {
-            throw new AssertionError("Expected no exception", callback.mError);
-        }
-
-        assertEquals(200, callback.mResponseInfo.getHttpStatusCode());
-        assertEquals("test", callback.mResponseAsString);
-    }
-
-    @Test
-    public void testUrlRequest_directExecutor_disallowed_uploadDataProvider() throws Exception {
-        TestUrlRequestCallback callback = new TestUrlRequestCallback();
-        // This applies just locally to the test callback, not to SUT
-        callback.setAllowDirectExecutor(true);
-
-        UrlRequest.Builder builder = mHttpEngine.newUrlRequestBuilder(
-                mTestServer.getEchoBodyUrl(), Executors.newSingleThreadExecutor(), callback);
-        UploadDataProvider dataProvider = UploadDataProviders.create("test");
-
-        builder.setUploadDataProvider(dataProvider, DIRECT_EXECUTOR)
-                .addHeader("Content-Type", "text/plain;charset=UTF-8")
-                .build()
-                .start();
-        callback.blockForDone();
-
-        assertTrue(callback.mOnErrorCalled);
-        assertTrue(callback.mError.getCause() instanceof InlineExecutionProhibitedException);
-    }
-
-    @Test
-    public void testUrlRequest_directExecutor_disallowed_responseCallback() throws Exception {
-        TestUrlRequestCallback callback = new TestUrlRequestCallback();
-        // This applies just locally to the test callback, not to SUT
-        callback.setAllowDirectExecutor(true);
-
-        UrlRequest.Builder builder = mHttpEngine.newUrlRequestBuilder(
-                mTestServer.getEchoBodyUrl(), DIRECT_EXECUTOR, callback);
-        UploadDataProvider dataProvider = UploadDataProviders.create("test");
-
-        builder.setUploadDataProvider(dataProvider, Executors.newSingleThreadExecutor())
-                .addHeader("Content-Type", "text/plain;charset=UTF-8")
-                .build()
-                .start();
-        callback.blockForDone();
-
-        assertTrue(callback.mOnErrorCalled);
-        assertTrue(callback.mError.getCause() instanceof InlineExecutionProhibitedException);
-    }
-
-    @Test
-    public void testUrlRequest_nonDirectByteBuffer() throws Exception {
-        BlockingQueue<HttpException> onFailedException = new ArrayBlockingQueue<>(1);
-
-        UrlRequest request =
-                mHttpEngine
-                        .newUrlRequestBuilder(
-                                mTestServer.getSuccessUrl(),
-                                Executors.newSingleThreadExecutor(),
-                                new StubUrlRequestCallback() {
-                                    @Override
-                                    public void onResponseStarted(
-                                            UrlRequest request, UrlResponseInfo info) {
-                                        // note: allocate, not allocateDirect
-                                        request.read(ByteBuffer.allocate(1024));
-                                    }
-
-                                    @Override
-                                    public void onFailed(
-                                            UrlRequest request,
-                                            UrlResponseInfo info,
-                                            HttpException error) {
-                                        onFailedException.add(error);
-                                    }
-                                })
-                        .build();
-        request.start();
-
-        HttpException e = onFailedException.poll(5, TimeUnit.SECONDS);
-        assertNotNull(e);
-        assertTrue(e.getCause() instanceof IllegalArgumentException);
-        assertTrue(e.getCause().getMessage().contains("direct"));
-    }
-
-    @Test
-    public void testUrlRequest_fullByteBuffer() throws Exception {
-        BlockingQueue<HttpException> onFailedException = new ArrayBlockingQueue<>(1);
-
-        UrlRequest request =
-                mHttpEngine
-                        .newUrlRequestBuilder(
-                                mTestServer.getSuccessUrl(),
-                                Executors.newSingleThreadExecutor(),
-                                new StubUrlRequestCallback() {
-                                    @Override
-                                    public void onResponseStarted(
-                                            UrlRequest request, UrlResponseInfo info) {
-                                        ByteBuffer bb = ByteBuffer.allocateDirect(1024);
-                                        bb.position(bb.limit());
-                                        request.read(bb);
-                                    }
-
-                                    @Override
-                                    public void onFailed(
-                                            UrlRequest request,
-                                            UrlResponseInfo info,
-                                            HttpException error) {
-                                        onFailedException.add(error);
-                                    }
-                                })
-                        .build();
-        request.start();
-
-        HttpException e = onFailedException.poll(5, TimeUnit.SECONDS);
-        assertNotNull(e);
-        assertTrue(e.getCause() instanceof IllegalArgumentException);
-        assertTrue(e.getCause().getMessage().contains("full"));
-    }
-
-    @Test
-    public void testUrlRequest_redirects() throws Exception {
-        int expectedNumRedirects = 5;
-        String url =
-                mTestServer.getRedirectingAssetUrl("html/hello_world.html", expectedNumRedirects);
-
-        UrlRequest request = createUrlRequestBuilder(url).build();
-        request.start();
-
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-        UrlResponseInfo info = mCallback.mResponseInfo;
-        assertOKStatusCode(info);
-        assertThat(mCallback.mResponseAsString).contains("hello world");
-        assertThat(info.getUrlChain()).hasSize(expectedNumRedirects + 1);
-        assertThat(info.getUrlChain().get(0)).isEqualTo(url);
-        assertThat(info.getUrlChain().get(expectedNumRedirects)).isEqualTo(info.getUrl());
-    }
-
-    @Test
-    public void testUrlRequestPost_withRedirect() throws Exception {
-        String body = Strings.repeat(
-                "Hello, this is a really interesting body, so write this 100 times.", 100);
-
-        String redirectUrlParameter =
-                URLEncoder.encode(mTestServer.getEchoBodyUrl(), "UTF-8");
-        createUrlRequestBuilder(
-                String.format(
-                        "%s/alt_redirect?dest=%s&statusCode=307",
-                        mTestServer.getBaseUri(),
-                        redirectUrlParameter))
-                .setHttpMethod("POST")
-                .addHeader("Content-Type", "text/plain")
-                .setUploadDataProvider(
-                        UploadDataProviders.create(body.getBytes(StandardCharsets.UTF_8)),
-                        mCallback.getExecutor())
-                .build()
-                .start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
-        assertOKStatusCode(mCallback.mResponseInfo);
-        assertThat(mCallback.mResponseAsString).isEqualTo(body);
-    }
-
-    @Test
-    public void testUrlRequest_customHeaders() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getEchoHeadersUrl());
-
-        List<Map.Entry<String, String>> expectedHeaders = Arrays.asList(
-                Map.entry("Authorization", "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="),
-                Map.entry("Max-Forwards", "10"),
-                Map.entry("X-Client-Data", "random custom header content"));
-
-        for (Map.Entry<String, String> header : expectedHeaders) {
-            builder.addHeader(header.getKey(), header.getValue());
-        }
-
-        builder.build().start();
-        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
-
-        assertOKStatusCode(mCallback.mResponseInfo);
-
-        List<Map.Entry<String, String>> echoedHeaders =
-                extractEchoedHeaders(mCallback.mResponseInfo.getHeaders());
-
-        // The implementation might decide to add more headers like accepted encodings it handles
-        // internally so the server is likely to see more headers than explicitly set
-        // by the developer.
-        assertThat(echoedHeaders)
-                .containsAtLeastElementsIn(expectedHeaders);
-    }
-
-    @Test
-    public void testUrlRequest_getHttpMethod() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final String method = "POST";
-
-        builder.setHttpMethod(method);
-        UrlRequest request = builder.build();
-        assertThat(request.getHttpMethod()).isEqualTo(method);
-    }
-
-    @Test
-    public void testUrlRequest_getHeaders_asList() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final List<Map.Entry<String, String>> expectedHeaders = Arrays.asList(
-                Map.entry("Authorization", "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="),
-                Map.entry("Max-Forwards", "10"),
-                Map.entry("X-Client-Data", "random custom header content"));
-
-        for (Map.Entry<String, String> header : expectedHeaders) {
-            builder.addHeader(header.getKey(), header.getValue());
-        }
-
-        UrlRequest request = builder.build();
-        assertThat(request.getHeaders().getAsList()).containsAtLeastElementsIn(expectedHeaders);
-    }
-
-    @Test
-    public void testUrlRequest_getHeaders_asMap() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final Map<String, List<String>> expectedHeaders = Map.of(
-                "Authorization", Arrays.asList("Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="),
-                "Max-Forwards", Arrays.asList("10"),
-                "X-Client-Data", Arrays.asList("random custom header content"));
-
-        for (Map.Entry<String, List<String>> header : expectedHeaders.entrySet()) {
-            builder.addHeader(header.getKey(), header.getValue().get(0));
-        }
-
-        UrlRequest request = builder.build();
-        assertThat(request.getHeaders().getAsMap()).containsAtLeastEntriesIn(expectedHeaders);
-    }
-
-    @Test
-    public void testUrlRequest_isCacheDisabled() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final boolean isCacheDisabled = true;
-
-        builder.setCacheDisabled(isCacheDisabled);
-        UrlRequest request = builder.build();
-        assertThat(request.isCacheDisabled()).isEqualTo(isCacheDisabled);
-    }
-
-    @Test
-    public void testUrlRequest_isDirectExecutorAllowed() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final boolean isDirectExecutorAllowed = true;
-
-        builder.setDirectExecutorAllowed(isDirectExecutorAllowed);
-        UrlRequest request = builder.build();
-        assertThat(request.isDirectExecutorAllowed()).isEqualTo(isDirectExecutorAllowed);
-    }
-
-    @Test
-    public void testUrlRequest_getPriority() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final int priority = UrlRequest.REQUEST_PRIORITY_LOW;
-
-        builder.setPriority(priority);
-        UrlRequest request = builder.build();
-        assertThat(request.getPriority()).isEqualTo(priority);
-    }
-
-    @Test
-    public void testUrlRequest_hasTrafficStatsTag() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-
-        builder.setTrafficStatsTag(10);
-        UrlRequest request = builder.build();
-        assertThat(request.hasTrafficStatsTag()).isEqualTo(true);
-    }
-
-    @Test
-    public void testUrlRequest_getTrafficStatsTag() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final int trafficStatsTag = 10;
-
-        builder.setTrafficStatsTag(trafficStatsTag);
-        UrlRequest request = builder.build();
-        assertThat(request.getTrafficStatsTag()).isEqualTo(trafficStatsTag);
-    }
-
-    @Test
-    public void testUrlRequest_hasTrafficStatsUid() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-
-        builder.setTrafficStatsUid(10);
-        UrlRequest request = builder.build();
-        assertThat(request.hasTrafficStatsUid()).isEqualTo(true);
-    }
-
-    @Test
-    public void testUrlRequest_getTrafficStatsUid() throws Exception {
-        UrlRequest.Builder builder = createUrlRequestBuilder(mTestServer.getSuccessUrl());
-        final int trafficStatsUid = 10;
-
-        builder.setTrafficStatsUid(trafficStatsUid);
-        UrlRequest request = builder.build();
-        assertThat(request.getTrafficStatsUid()).isEqualTo(trafficStatsUid);
-    }
-
-    private static List<Map.Entry<String, String>> extractEchoedHeaders(HeaderBlock headers) {
-        return headers.getAsList()
-                .stream()
-                .flatMap(input -> {
-                    if (input.getKey().startsWith(CtsTestServer.ECHOED_RESPONSE_HEADER_PREFIX)) {
-                        String strippedKey =
-                                input.getKey().substring(
-                                        CtsTestServer.ECHOED_RESPONSE_HEADER_PREFIX.length());
-                        return Stream.of(Map.entry(strippedKey, input.getValue()));
-                    } else {
-                        return Stream.empty();
-                    }
-                })
-                .collect(Collectors.toList());
-    }
-
-    private static class StubUrlRequestCallback implements UrlRequest.Callback {
-
-        @Override
-        public void onRedirectReceived(
-                UrlRequest request, UrlResponseInfo info, String newLocationUrl) {
-            throw new UnsupportedOperationException();
-        }
-
-        @Override
-        public void onResponseStarted(UrlRequest request, UrlResponseInfo info) {
-            throw new UnsupportedOperationException();
-        }
-
-        @Override
-        public void onReadCompleted(
-                UrlRequest request, UrlResponseInfo info, ByteBuffer byteBuffer) {
-            throw new UnsupportedOperationException();
-        }
-
-        @Override
-        public void onSucceeded(UrlRequest request, UrlResponseInfo info) {
-            throw new UnsupportedOperationException();
-        }
-
-        @Override
-        public void onFailed(UrlRequest request, UrlResponseInfo info, HttpException error) {
-            throw new UnsupportedOperationException(error);
-        }
-
-        @Override
-        public void onCanceled(@NonNull UrlRequest request, @Nullable UrlResponseInfo info) {
-            throw new UnsupportedOperationException();
-        }
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/UrlResponseInfoTest.kt b/Cronet/tests/cts/src/android/net/http/cts/UrlResponseInfoTest.kt
deleted file mode 100644
index f1b57c6..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/UrlResponseInfoTest.kt
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts
-
-import android.content.Context
-import android.net.http.HttpEngine
-import android.net.http.cts.util.HttpCtsTestServer
-import android.net.http.cts.util.TestUrlRequestCallback
-import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep
-import android.os.Build
-import androidx.test.core.app.ApplicationProvider
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.Test
-import kotlin.test.assertEquals
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class UrlResponseInfoTest {
-
-    @Test
-    fun testUrlResponseInfo_apisReturnCorrectInfo() {
-        // start the engine and send a request
-        val context: Context = ApplicationProvider.getApplicationContext()
-        val server = HttpCtsTestServer(context)
-        val httpEngine = HttpEngine.Builder(context).build()
-        val callback = TestUrlRequestCallback()
-        val url = server.successUrl
-        val request = httpEngine.newUrlRequestBuilder(url, callback.executor, callback).build()
-
-        request.start()
-        callback.expectCallback(ResponseStep.ON_SUCCEEDED)
-
-        val info = callback.mResponseInfo
-        assertFalse(info.headers.asList.isEmpty())
-        assertEquals(200, info.httpStatusCode)
-        assertTrue(info.receivedByteCount > 0)
-        assertEquals(url, info.url)
-        assertEquals(listOf(url), info.urlChain)
-        assertFalse(info.wasCached())
-
-        // TODO Current test server does not set these values. Uncomment when we use one that does.
-        // assertEquals("OK", info.httpStatusText)
-        // assertEquals("http/1.1", info.negotiatedProtocol)
-
-        // cronet defaults to port 0 when no proxy is specified.
-        // This is not a behaviour we want to enforce since null is reasonable too.
-        // assertEquals(":0", info.proxyServer)
-
-        server.shutdown()
-        httpEngine.shutdown()
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt b/Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt
deleted file mode 100644
index 5196544..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/HttpCtsTestServer.kt
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util
-
-import android.content.Context
-import android.webkit.cts.CtsTestServer
-import java.net.URI
-import org.apache.http.HttpEntityEnclosingRequest
-import org.apache.http.HttpRequest
-import org.apache.http.HttpResponse
-import org.apache.http.HttpStatus
-import org.apache.http.HttpVersion
-import org.apache.http.message.BasicHttpResponse
-
-private const val ECHO_BODY_PATH = "/echo_body"
-
-/** Extends CtsTestServer to handle POST requests and other test specific requests */
-class HttpCtsTestServer(context: Context) : CtsTestServer(context) {
-
-    val echoBodyUrl: String = baseUri + ECHO_BODY_PATH
-    val successUrl: String = getAssetUrl("html/hello_world.html")
-
-    override fun onPost(req: HttpRequest): HttpResponse? {
-        val path = URI.create(req.requestLine.uri).path
-        var response: HttpResponse? = null
-
-        if (path.startsWith(ECHO_BODY_PATH)) {
-            if (req !is HttpEntityEnclosingRequest) {
-                return BasicHttpResponse(
-                    HttpVersion.HTTP_1_0,
-                    HttpStatus.SC_INTERNAL_SERVER_ERROR,
-                    "Expected req to be of type HttpEntityEnclosingRequest but got ${req.javaClass}"
-                )
-            }
-
-            response = BasicHttpResponse(HttpVersion.HTTP_1_0, HttpStatus.SC_OK, null)
-            response.entity = req.entity
-            response.addHeader("Content-Length", req.entity.contentLength.toString())
-        }
-
-        return response
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestBidirectionalStreamCallback.java b/Cronet/tests/cts/src/android/net/http/cts/util/TestBidirectionalStreamCallback.java
deleted file mode 100644
index 1e7333c..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/TestBidirectionalStreamCallback.java
+++ /dev/null
@@ -1,485 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util;
-
-import static org.hamcrest.Matchers.equalTo;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assume.assumeThat;
-import static org.junit.Assume.assumeTrue;
-
-import android.net.http.BidirectionalStream;
-import android.net.http.HeaderBlock;
-import android.net.http.HttpException;
-import android.net.http.UrlResponseInfo;
-import android.os.ConditionVariable;
-
-import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.concurrent.Executor;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
-
-/**
- * Callback that tracks information from different callbacks and has a method to block thread until
- * the stream completes on another thread. Allows to cancel, block stream or throw an exception from
- * an arbitrary step.
- */
-public class TestBidirectionalStreamCallback implements BidirectionalStream.Callback {
-    private static final int TIMEOUT_MS = 12_000;
-    public UrlResponseInfo mResponseInfo;
-    public HttpException mError;
-
-    public ResponseStep mResponseStep = ResponseStep.NOTHING;
-
-    public boolean mOnErrorCalled;
-    public boolean mOnCanceledCalled;
-
-    public int mHttpResponseDataLength;
-    public String mResponseAsString = "";
-
-    public HeaderBlock mTrailers;
-
-    private static final int READ_BUFFER_SIZE = 32 * 1024;
-
-    // When false, the consumer is responsible for all calls into the stream
-    // that advance it.
-    private boolean mAutoAdvance = true;
-
-    // Conditionally fail on certain steps.
-    private FailureType mFailureType = FailureType.NONE;
-    private ResponseStep mFailureStep = ResponseStep.NOTHING;
-
-    // Signals when the stream is done either successfully or not.
-    private final ConditionVariable mDone = new ConditionVariable();
-
-    // Signaled on each step when mAutoAdvance is false.
-    private final ConditionVariable mReadStepBlock = new ConditionVariable();
-    private final ConditionVariable mWriteStepBlock = new ConditionVariable();
-
-    // Executor Service for Cronet callbacks.
-    private final ExecutorService mExecutorService =
-            Executors.newSingleThreadExecutor(new ExecutorThreadFactory());
-    private Thread mExecutorThread;
-
-    // position() of ByteBuffer prior to read() call.
-    private int mBufferPositionBeforeRead;
-
-    // Data to write.
-    private final ArrayList<WriteBuffer> mWriteBuffers = new ArrayList<WriteBuffer>();
-
-    // Buffers that we yet to receive the corresponding onWriteCompleted callback.
-    private final ArrayList<WriteBuffer> mWriteBuffersToBeAcked = new ArrayList<WriteBuffer>();
-
-    // Whether to use a direct executor.
-    private final boolean mUseDirectExecutor;
-    private final DirectExecutor mDirectExecutor;
-
-    private class ExecutorThreadFactory implements ThreadFactory {
-        @Override
-        public Thread newThread(Runnable r) {
-            mExecutorThread = new Thread(r);
-            return mExecutorThread;
-        }
-    }
-
-    private static class WriteBuffer {
-        final ByteBuffer mBuffer;
-        final boolean mFlush;
-
-        WriteBuffer(ByteBuffer buffer, boolean flush) {
-            mBuffer = buffer;
-            mFlush = flush;
-        }
-    }
-
-    private static class DirectExecutor implements Executor {
-        @Override
-        public void execute(Runnable task) {
-            task.run();
-        }
-    }
-
-    public enum ResponseStep {
-        NOTHING,
-        ON_STREAM_READY,
-        ON_RESPONSE_STARTED,
-        ON_READ_COMPLETED,
-        ON_WRITE_COMPLETED,
-        ON_TRAILERS,
-        ON_CANCELED,
-        ON_FAILED,
-        ON_SUCCEEDED,
-    }
-
-    public enum FailureType {
-        NONE,
-        CANCEL_SYNC,
-        CANCEL_ASYNC,
-        // Same as above, but continues to advance the stream after posting
-        // the cancellation task.
-        CANCEL_ASYNC_WITHOUT_PAUSE,
-        THROW_SYNC
-    }
-
-    private boolean isTerminalCallback(ResponseStep step) {
-        switch (step) {
-            case ON_SUCCEEDED:
-            case ON_CANCELED:
-            case ON_FAILED:
-                return true;
-            default:
-                return false;
-        }
-    }
-
-    public TestBidirectionalStreamCallback() {
-        mUseDirectExecutor = false;
-        mDirectExecutor = null;
-    }
-
-    public TestBidirectionalStreamCallback(boolean useDirectExecutor) {
-        mUseDirectExecutor = useDirectExecutor;
-        mDirectExecutor = new DirectExecutor();
-    }
-
-    public void setAutoAdvance(boolean autoAdvance) {
-        mAutoAdvance = autoAdvance;
-    }
-
-    public void setFailure(FailureType failureType, ResponseStep failureStep) {
-        mFailureStep = failureStep;
-        mFailureType = failureType;
-    }
-
-    public boolean blockForDone() {
-        return mDone.block(TIMEOUT_MS);
-    }
-
-    /**
-     * Waits for a terminal callback to complete execution before failing if the callback is not the
-     * expected one
-     *
-     * @param expectedStep the expected callback step
-     */
-    public void expectCallback(ResponseStep expectedStep) {
-        if (isTerminalCallback(expectedStep)) {
-            assertTrue(String.format(
-                            "Request timed out. Expected %s callback. Current callback is %s",
-                            expectedStep, mResponseStep),
-                    blockForDone());
-        }
-        assertSame(expectedStep, mResponseStep);
-    }
-
-    /**
-     * Waits for a terminal callback to complete execution before skipping the test if the callback
-     * is not the expected one
-     *
-     * @param expectedStep the expected callback step
-     */
-    public void assumeCallback(ResponseStep expectedStep) {
-        if (isTerminalCallback(expectedStep)) {
-            assumeTrue(
-                    String.format(
-                            "Request timed out. Expected %s callback. Current callback is %s",
-                            expectedStep, mResponseStep),
-                    blockForDone());
-        }
-        assumeThat(expectedStep, equalTo(mResponseStep));
-    }
-
-    public void waitForNextReadStep() {
-        mReadStepBlock.block();
-        mReadStepBlock.close();
-    }
-
-    public void waitForNextWriteStep() {
-        mWriteStepBlock.block();
-        mWriteStepBlock.close();
-    }
-
-    public Executor getExecutor() {
-        if (mUseDirectExecutor) {
-            return mDirectExecutor;
-        }
-        return mExecutorService;
-    }
-
-    public void shutdownExecutor() {
-        if (mUseDirectExecutor) {
-            throw new UnsupportedOperationException("DirectExecutor doesn't support shutdown");
-        }
-        mExecutorService.shutdown();
-    }
-
-    public void addWriteData(byte[] data) {
-        addWriteData(data, true);
-    }
-
-    public void addWriteData(byte[] data, boolean flush) {
-        ByteBuffer writeBuffer = ByteBuffer.allocateDirect(data.length);
-        writeBuffer.put(data);
-        writeBuffer.flip();
-        mWriteBuffers.add(new WriteBuffer(writeBuffer, flush));
-        mWriteBuffersToBeAcked.add(new WriteBuffer(writeBuffer, flush));
-    }
-
-    @Override
-    public void onStreamReady(BidirectionalStream stream) {
-        checkOnValidThread();
-        assertFalse(stream.isDone());
-        assertEquals(ResponseStep.NOTHING, mResponseStep);
-        assertNull(mError);
-        mResponseStep = ResponseStep.ON_STREAM_READY;
-        if (maybeThrowCancelOrPause(stream, mWriteStepBlock)) {
-            return;
-        }
-        startNextWrite(stream);
-    }
-
-    @Override
-    public void onResponseHeadersReceived(BidirectionalStream stream, UrlResponseInfo info) {
-        checkOnValidThread();
-        assertFalse(stream.isDone());
-        assertTrue(
-                mResponseStep == ResponseStep.NOTHING
-                        || mResponseStep == ResponseStep.ON_STREAM_READY
-                        || mResponseStep == ResponseStep.ON_WRITE_COMPLETED);
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_RESPONSE_STARTED;
-        mResponseInfo = info;
-        if (maybeThrowCancelOrPause(stream, mReadStepBlock)) {
-            return;
-        }
-        startNextRead(stream);
-    }
-
-    @Override
-    public void onReadCompleted(
-            BidirectionalStream stream,
-            UrlResponseInfo info,
-            ByteBuffer byteBuffer,
-            boolean endOfStream) {
-        checkOnValidThread();
-        assertFalse(stream.isDone());
-        assertTrue(
-                mResponseStep == ResponseStep.ON_RESPONSE_STARTED
-                        || mResponseStep == ResponseStep.ON_READ_COMPLETED
-                        || mResponseStep == ResponseStep.ON_WRITE_COMPLETED
-                        || mResponseStep == ResponseStep.ON_TRAILERS);
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_READ_COMPLETED;
-        mResponseInfo = info;
-
-        final int bytesRead = byteBuffer.position() - mBufferPositionBeforeRead;
-        mHttpResponseDataLength += bytesRead;
-        final byte[] lastDataReceivedAsBytes = new byte[bytesRead];
-        // Rewind byteBuffer.position() to pre-read() position.
-        byteBuffer.position(mBufferPositionBeforeRead);
-        // This restores byteBuffer.position() to its value on entrance to
-        // this function.
-        byteBuffer.get(lastDataReceivedAsBytes);
-
-        mResponseAsString += new String(lastDataReceivedAsBytes);
-
-        if (maybeThrowCancelOrPause(stream, mReadStepBlock)) {
-            return;
-        }
-        // Do not read if EOF has been reached.
-        if (!endOfStream) {
-            startNextRead(stream);
-        }
-    }
-
-    @Override
-    public void onWriteCompleted(
-            BidirectionalStream stream,
-            UrlResponseInfo info,
-            ByteBuffer buffer,
-            boolean endOfStream) {
-        checkOnValidThread();
-        assertFalse(stream.isDone());
-        assertNull(mError);
-        mResponseStep = ResponseStep.ON_WRITE_COMPLETED;
-        mResponseInfo = info;
-        if (!mWriteBuffersToBeAcked.isEmpty()) {
-            assertEquals(buffer, mWriteBuffersToBeAcked.get(0).mBuffer);
-            mWriteBuffersToBeAcked.remove(0);
-        }
-        if (maybeThrowCancelOrPause(stream, mWriteStepBlock)) {
-            return;
-        }
-        startNextWrite(stream);
-    }
-
-    @Override
-    public void onResponseTrailersReceived(
-            BidirectionalStream stream,
-            UrlResponseInfo info,
-            HeaderBlock trailers) {
-        checkOnValidThread();
-        assertFalse(stream.isDone());
-        assertNull(mError);
-        mResponseStep = ResponseStep.ON_TRAILERS;
-        mResponseInfo = info;
-        mTrailers = trailers;
-        if (maybeThrowCancelOrPause(stream, mReadStepBlock)) {
-            return;
-        }
-    }
-
-    @Override
-    public void onSucceeded(BidirectionalStream stream, UrlResponseInfo info) {
-        checkOnValidThread();
-        assertTrue(stream.isDone());
-        assertTrue(
-                mResponseStep == ResponseStep.ON_RESPONSE_STARTED
-                        || mResponseStep == ResponseStep.ON_READ_COMPLETED
-                        || mResponseStep == ResponseStep.ON_WRITE_COMPLETED
-                        || mResponseStep == ResponseStep.ON_TRAILERS);
-        assertFalse(mOnErrorCalled);
-        assertFalse(mOnCanceledCalled);
-        assertNull(mError);
-        assertEquals(0, mWriteBuffers.size());
-        assertEquals(0, mWriteBuffersToBeAcked.size());
-
-        mResponseStep = ResponseStep.ON_SUCCEEDED;
-        mResponseInfo = info;
-        openDone();
-        maybeThrowCancelOrPause(stream, mReadStepBlock);
-    }
-
-    @Override
-    public void onFailed(BidirectionalStream stream, UrlResponseInfo info, HttpException error) {
-        checkOnValidThread();
-        assertTrue(stream.isDone());
-        // Shouldn't happen after success.
-        assertTrue(mResponseStep != ResponseStep.ON_SUCCEEDED);
-        // Should happen at most once for a single stream.
-        assertFalse(mOnErrorCalled);
-        assertFalse(mOnCanceledCalled);
-        assertNull(mError);
-        mResponseStep = ResponseStep.ON_FAILED;
-        mResponseInfo = info;
-
-        mOnErrorCalled = true;
-        mError = error;
-        openDone();
-        maybeThrowCancelOrPause(stream, mReadStepBlock);
-    }
-
-    @Override
-    public void onCanceled(BidirectionalStream stream, UrlResponseInfo info) {
-        checkOnValidThread();
-        assertTrue(stream.isDone());
-        // Should happen at most once for a single stream.
-        assertFalse(mOnCanceledCalled);
-        assertFalse(mOnErrorCalled);
-        assertNull(mError);
-        mResponseStep = ResponseStep.ON_CANCELED;
-        mResponseInfo = info;
-
-        mOnCanceledCalled = true;
-        openDone();
-        maybeThrowCancelOrPause(stream, mReadStepBlock);
-    }
-
-    public void startNextRead(BidirectionalStream stream) {
-        startNextRead(stream, ByteBuffer.allocateDirect(READ_BUFFER_SIZE));
-    }
-
-    public void startNextRead(BidirectionalStream stream, ByteBuffer buffer) {
-        mBufferPositionBeforeRead = buffer.position();
-        stream.read(buffer);
-    }
-
-    public void startNextWrite(BidirectionalStream stream) {
-        if (!mWriteBuffers.isEmpty()) {
-            Iterator<WriteBuffer> iterator = mWriteBuffers.iterator();
-            while (iterator.hasNext()) {
-                WriteBuffer b = iterator.next();
-                stream.write(b.mBuffer, !iterator.hasNext());
-                iterator.remove();
-                if (b.mFlush) {
-                    stream.flush();
-                    break;
-                }
-            }
-        }
-    }
-
-    public boolean isDone() {
-        // It's not mentioned by the Android docs, but block(0) seems to block
-        // indefinitely, so have to block for one millisecond to get state
-        // without blocking.
-        return mDone.block(1);
-    }
-
-    /** Returns the number of pending Writes. */
-    public int numPendingWrites() {
-        return mWriteBuffers.size();
-    }
-
-    protected void openDone() {
-        mDone.open();
-    }
-
-    /** Returns {@code false} if the callback should continue to advance the stream. */
-    private boolean maybeThrowCancelOrPause(
-            final BidirectionalStream stream, ConditionVariable stepBlock) {
-        if (mResponseStep != mFailureStep || mFailureType == FailureType.NONE) {
-            if (!mAutoAdvance) {
-                stepBlock.open();
-                return true;
-            }
-            return false;
-        }
-
-        if (mFailureType == FailureType.THROW_SYNC) {
-            throw new IllegalStateException("Callback Exception.");
-        }
-        Runnable task =
-                new Runnable() {
-                    @Override
-                    public void run() {
-                        stream.cancel();
-                    }
-                };
-        if (mFailureType == FailureType.CANCEL_ASYNC
-                || mFailureType == FailureType.CANCEL_ASYNC_WITHOUT_PAUSE) {
-            getExecutor().execute(task);
-        } else {
-            task.run();
-        }
-        return mFailureType != FailureType.CANCEL_ASYNC_WITHOUT_PAUSE;
-    }
-
-    /** Checks whether callback methods are invoked on the correct thread. */
-    private void checkOnValidThread() {
-        if (!mUseDirectExecutor) {
-            assertEquals(mExecutorThread, Thread.currentThread());
-        }
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestStatusListener.kt b/Cronet/tests/cts/src/android/net/http/cts/util/TestStatusListener.kt
deleted file mode 100644
index 3a4486f..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/TestStatusListener.kt
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util
-
-import android.net.http.UrlRequest.StatusListener
-import java.util.concurrent.CompletableFuture
-import java.util.concurrent.TimeUnit
-import org.junit.Assert.assertSame
-
-private const val TIMEOUT_MS = 12000L
-
-/** Test status listener for requests */
-class TestStatusListener : StatusListener {
-    private val statusFuture = CompletableFuture<Int>()
-
-    override fun onStatus(status: Int) {
-        statusFuture.complete(status)
-    }
-
-    /** Fails if the expected status is not the returned status */
-    fun expectStatus(expected: Int) {
-        assertSame(expected, statusFuture.get(TIMEOUT_MS, TimeUnit.MILLISECONDS))
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestUrlRequestCallback.java b/Cronet/tests/cts/src/android/net/http/cts/util/TestUrlRequestCallback.java
deleted file mode 100644
index 28443b7..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/TestUrlRequestCallback.java
+++ /dev/null
@@ -1,481 +0,0 @@
-/*
- * Copyright (C) 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util;
-
-import static org.hamcrest.Matchers.equalTo;
-import static org.hamcrest.core.AnyOf.anyOf;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertThat;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-import static org.junit.Assume.assumeThat;
-import static org.junit.Assume.assumeTrue;
-
-import android.net.http.CallbackException;
-import android.net.http.HttpException;
-import android.net.http.InlineExecutionProhibitedException;
-import android.net.http.UrlRequest;
-import android.net.http.UrlResponseInfo;
-import android.os.ConditionVariable;
-import android.os.StrictMode;
-
-import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.ThreadFactory;
-import java.util.concurrent.TimeUnit;
-
-/**
- * Callback that tracks information from different callbacks and has a
- * method to block thread until the request completes on another thread.
- * Allows us to cancel, block request or throw an exception from an arbitrary step.
- */
-public class TestUrlRequestCallback implements UrlRequest.Callback {
-    private static final int TIMEOUT_MS = 12_000;
-    public ArrayList<UrlResponseInfo> mRedirectResponseInfoList = new ArrayList<>();
-    public ArrayList<String> mRedirectUrlList = new ArrayList<>();
-    public UrlResponseInfo mResponseInfo;
-    public HttpException mError;
-
-    public ResponseStep mResponseStep = ResponseStep.NOTHING;
-
-    public int mRedirectCount;
-    public boolean mOnErrorCalled;
-    public boolean mOnCanceledCalled;
-
-    public int mHttpResponseDataLength;
-    public String mResponseAsString = "";
-
-    public int mReadBufferSize = 32 * 1024;
-
-    // When false, the consumer is responsible for all calls into the request
-    // that advance it.
-    private boolean mAutoAdvance = true;
-    // Whether an exception is thrown by maybeThrowCancelOrPause().
-    private boolean mCallbackExceptionThrown;
-
-    // Whether to permit calls on the network thread.
-    private boolean mAllowDirectExecutor;
-
-    // Whether to stop the executor thread after reaching a terminal method.
-    // Terminal methods are (onSucceeded, onFailed or onCancelled)
-    private boolean mBlockOnTerminalState;
-
-    // Conditionally fail on certain steps.
-    private FailureType mFailureType = FailureType.NONE;
-    private ResponseStep mFailureStep = ResponseStep.NOTHING;
-
-    // Signals when request is done either successfully or not.
-    private final ConditionVariable mDone = new ConditionVariable();
-
-    // Hangs the calling thread until a terminal method has started executing.
-    private final ConditionVariable mWaitForTerminalToStart = new ConditionVariable();
-
-    // Signaled on each step when mAutoAdvance is false.
-    private final ConditionVariable mStepBlock = new ConditionVariable();
-
-    // Executor Service for Http callbacks.
-    private final ExecutorService mExecutorService;
-    private Thread mExecutorThread;
-
-    // position() of ByteBuffer prior to read() call.
-    private int mBufferPositionBeforeRead;
-
-    private static class ExecutorThreadFactory implements ThreadFactory {
-        @Override
-        public Thread newThread(final Runnable r) {
-            return new Thread(new Runnable() {
-                @Override
-                public void run() {
-                    StrictMode.ThreadPolicy threadPolicy = StrictMode.getThreadPolicy();
-                    try {
-                        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
-                                .detectNetwork()
-                                .penaltyLog()
-                                .penaltyDeath()
-                                .build());
-                        r.run();
-                    } finally {
-                        StrictMode.setThreadPolicy(threadPolicy);
-                    }
-                }
-            });
-        }
-    }
-
-    public enum ResponseStep {
-        NOTHING,
-        ON_RECEIVED_REDIRECT,
-        ON_RESPONSE_STARTED,
-        ON_READ_COMPLETED,
-        ON_SUCCEEDED,
-        ON_FAILED,
-        ON_CANCELED,
-    }
-
-    public enum FailureType {
-        NONE,
-        CANCEL_SYNC,
-        CANCEL_ASYNC,
-        // Same as above, but continues to advance the request after posting
-        // the cancellation task.
-        CANCEL_ASYNC_WITHOUT_PAUSE,
-        THROW_SYNC
-    }
-
-    private static void assertContains(String expectedSubstring, String actualString) {
-        assertNotNull(actualString);
-        assertTrue("String [" + actualString + "] doesn't contain substring [" + expectedSubstring
-                + "]", actualString.contains(expectedSubstring));
-
-    }
-
-    /**
-     * Set {@code mExecutorThread}.
-     */
-    private void fillInExecutorThread() {
-        mExecutorService.execute(new Runnable() {
-            @Override
-            public void run() {
-                mExecutorThread = Thread.currentThread();
-            }
-        });
-    }
-
-    private boolean isTerminalCallback(ResponseStep step) {
-        switch (step) {
-            case ON_SUCCEEDED:
-            case ON_CANCELED:
-            case ON_FAILED:
-                return true;
-            default:
-                return false;
-        }
-    }
-
-    /**
-     * Create a {@link TestUrlRequestCallback} with a new single-threaded executor.
-     */
-    public TestUrlRequestCallback() {
-        this(Executors.newSingleThreadExecutor(new ExecutorThreadFactory()));
-    }
-
-    /**
-     * Create a {@link TestUrlRequestCallback} using a custom single-threaded executor.
-     */
-    public TestUrlRequestCallback(ExecutorService executorService) {
-        mExecutorService = executorService;
-        fillInExecutorThread();
-    }
-
-    /**
-     * This blocks the callback executor thread once it has reached a final state callback.
-     * In order to continue execution, this method must be called again and providing {@code false}
-     * to continue execution.
-     *
-     * @param blockOnTerminalState the state to set for the executor thread
-     */
-    public void setBlockOnTerminalState(boolean blockOnTerminalState) {
-        mBlockOnTerminalState = blockOnTerminalState;
-        if (!blockOnTerminalState) {
-            mDone.open();
-        }
-    }
-
-    public void setAutoAdvance(boolean autoAdvance) {
-        mAutoAdvance = autoAdvance;
-    }
-
-    public void setAllowDirectExecutor(boolean allowed) {
-        mAllowDirectExecutor = allowed;
-    }
-
-    public void setFailure(FailureType failureType, ResponseStep failureStep) {
-        mFailureStep = failureStep;
-        mFailureType = failureType;
-    }
-
-    /**
-     * Blocks the calling thread till callback execution is done
-     *
-     * @return true if the condition was opened, false if the call returns because of the timeout.
-     */
-    public boolean blockForDone() {
-        return mDone.block(TIMEOUT_MS);
-    }
-
-    /**
-     * Waits for a terminal callback to complete execution before failing if the callback
-     * is not the expected one
-     *
-     * @param expectedStep the expected callback step
-     */
-    public void expectCallback(ResponseStep expectedStep) {
-        if (isTerminalCallback(expectedStep)) {
-            assertTrue("Did not receive terminal callback before timeout", blockForDone());
-        }
-        assertSame(expectedStep, mResponseStep);
-    }
-
-    /**
-     * Waits for a terminal callback to complete execution before skipping the test if the
-     * callback is not the expected one
-     *
-     * @param expectedStep the expected callback step
-     */
-    public void assumeCallback(ResponseStep expectedStep) {
-        if (isTerminalCallback(expectedStep)) {
-            assumeTrue("Did not receive terminal callback before timeout", blockForDone());
-        }
-        assumeThat(expectedStep, equalTo(mResponseStep));
-    }
-
-    /**
-     * Blocks the calling thread until one of the final states has been called.
-     * This is called before the callback has finished executed.
-     */
-    public void waitForTerminalToStart() {
-        mWaitForTerminalToStart.block();
-    }
-
-    public void waitForNextStep() {
-        mStepBlock.block();
-        mStepBlock.close();
-    }
-
-    public ExecutorService getExecutor() {
-        return mExecutorService;
-    }
-
-    public void shutdownExecutor() {
-        mExecutorService.shutdown();
-    }
-
-    /**
-     * Shuts down the ExecutorService and waits until it executes all posted
-     * tasks.
-     */
-    public void shutdownExecutorAndWait() {
-        mExecutorService.shutdown();
-        try {
-            // Termination shouldn't take long. Use 1 min which should be more than enough.
-            mExecutorService.awaitTermination(1, TimeUnit.MINUTES);
-        } catch (InterruptedException e) {
-            fail("ExecutorService is interrupted while waiting for termination");
-        }
-        assertTrue(mExecutorService.isTerminated());
-    }
-
-    @Override
-    public void onRedirectReceived(
-            UrlRequest request, UrlResponseInfo info, String newLocationUrl) {
-        checkExecutorThread();
-        assertFalse(request.isDone());
-        assertThat(mResponseStep, anyOf(
-                equalTo(ResponseStep.NOTHING),
-                equalTo(ResponseStep.ON_RECEIVED_REDIRECT)));
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_RECEIVED_REDIRECT;
-        mRedirectUrlList.add(newLocationUrl);
-        mRedirectResponseInfoList.add(info);
-        ++mRedirectCount;
-        if (maybeThrowCancelOrPause(request)) {
-            return;
-        }
-        request.followRedirect();
-    }
-
-    @Override
-    public void onResponseStarted(UrlRequest request, UrlResponseInfo info) {
-        checkExecutorThread();
-        assertFalse(request.isDone());
-        assertThat(mResponseStep, anyOf(
-                equalTo(ResponseStep.NOTHING),
-                equalTo(ResponseStep.ON_RECEIVED_REDIRECT)));
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_RESPONSE_STARTED;
-        mResponseInfo = info;
-        if (maybeThrowCancelOrPause(request)) {
-            return;
-        }
-        startNextRead(request);
-    }
-
-    @Override
-    public void onReadCompleted(UrlRequest request, UrlResponseInfo info, ByteBuffer byteBuffer) {
-        checkExecutorThread();
-        assertFalse(request.isDone());
-        assertThat(mResponseStep, anyOf(
-                equalTo(ResponseStep.ON_RESPONSE_STARTED),
-                equalTo(ResponseStep.ON_READ_COMPLETED)));
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_READ_COMPLETED;
-
-        final byte[] lastDataReceivedAsBytes;
-        final int bytesRead = byteBuffer.position() - mBufferPositionBeforeRead;
-        mHttpResponseDataLength += bytesRead;
-        lastDataReceivedAsBytes = new byte[bytesRead];
-        // Rewind |byteBuffer.position()| to pre-read() position.
-        byteBuffer.position(mBufferPositionBeforeRead);
-        // This restores |byteBuffer.position()| to its value on entrance to
-        // this function.
-        byteBuffer.get(lastDataReceivedAsBytes);
-        mResponseAsString += new String(lastDataReceivedAsBytes);
-
-        if (maybeThrowCancelOrPause(request)) {
-            return;
-        }
-        startNextRead(request);
-    }
-
-    @Override
-    public void onSucceeded(UrlRequest request, UrlResponseInfo info) {
-        checkExecutorThread();
-        assertTrue(request.isDone());
-        assertThat(mResponseStep, anyOf(
-                equalTo(ResponseStep.ON_RESPONSE_STARTED),
-                equalTo(ResponseStep.ON_READ_COMPLETED)));
-        assertFalse(mOnErrorCalled);
-        assertFalse(mOnCanceledCalled);
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_SUCCEEDED;
-        mResponseInfo = info;
-        mWaitForTerminalToStart.open();
-        if (mBlockOnTerminalState) mDone.block();
-        openDone();
-        maybeThrowCancelOrPause(request);
-    }
-
-    @Override
-    public void onFailed(UrlRequest request, UrlResponseInfo info, HttpException error) {
-        // If the failure is because of prohibited direct execution, the test shouldn't fail
-        // since the request already did.
-        if (error.getCause() instanceof InlineExecutionProhibitedException) {
-            mAllowDirectExecutor = true;
-        }
-        checkExecutorThread();
-        assertTrue(request.isDone());
-        // Shouldn't happen after success.
-        assertNotEquals(ResponseStep.ON_SUCCEEDED, mResponseStep);
-        // Should happen at most once for a single request.
-        assertFalse(mOnErrorCalled);
-        assertFalse(mOnCanceledCalled);
-        assertNull(mError);
-        if (mCallbackExceptionThrown) {
-            assertTrue(error instanceof CallbackException);
-            assertContains("Exception received from UrlRequest.Callback", error.getMessage());
-            assertNotNull(error.getCause());
-            assertTrue(error.getCause() instanceof IllegalStateException);
-            assertContains("Listener Exception.", error.getCause().getMessage());
-        }
-
-        mResponseStep = ResponseStep.ON_FAILED;
-        mOnErrorCalled = true;
-        mError = error;
-        mWaitForTerminalToStart.open();
-        if (mBlockOnTerminalState) mDone.block();
-        openDone();
-        maybeThrowCancelOrPause(request);
-    }
-
-    @Override
-    public void onCanceled(UrlRequest request, UrlResponseInfo info) {
-        checkExecutorThread();
-        assertTrue(request.isDone());
-        // Should happen at most once for a single request.
-        assertFalse(mOnCanceledCalled);
-        assertFalse(mOnErrorCalled);
-        assertNull(mError);
-
-        mResponseStep = ResponseStep.ON_CANCELED;
-        mOnCanceledCalled = true;
-        mWaitForTerminalToStart.open();
-        if (mBlockOnTerminalState) mDone.block();
-        openDone();
-        maybeThrowCancelOrPause(request);
-    }
-
-    public void startNextRead(UrlRequest request) {
-        startNextRead(request, ByteBuffer.allocateDirect(mReadBufferSize));
-    }
-
-    public void startNextRead(UrlRequest request, ByteBuffer buffer) {
-        mBufferPositionBeforeRead = buffer.position();
-        request.read(buffer);
-    }
-
-    public boolean isDone() {
-        // It's not mentioned by the Android docs, but block(0) seems to block
-        // indefinitely, so have to block for one millisecond to get state
-        // without blocking.
-        return mDone.block(1);
-    }
-
-    protected void openDone() {
-        mDone.open();
-    }
-
-    private void checkExecutorThread() {
-        if (!mAllowDirectExecutor) {
-            assertEquals(mExecutorThread, Thread.currentThread());
-        }
-    }
-
-    /**
-     * Returns {@code false} if the listener should continue to advance the
-     * request.
-     */
-    private boolean maybeThrowCancelOrPause(final UrlRequest request) {
-        checkExecutorThread();
-        if (mResponseStep != mFailureStep || mFailureType == FailureType.NONE) {
-            if (!mAutoAdvance) {
-                mStepBlock.open();
-                return true;
-            }
-            return false;
-        }
-
-        if (mFailureType == FailureType.THROW_SYNC) {
-            assertFalse(mCallbackExceptionThrown);
-            mCallbackExceptionThrown = true;
-            throw new IllegalStateException("Listener Exception.");
-        }
-        Runnable task = new Runnable() {
-            @Override
-            public void run() {
-                request.cancel();
-            }
-        };
-        if (mFailureType == FailureType.CANCEL_ASYNC
-                || mFailureType == FailureType.CANCEL_ASYNC_WITHOUT_PAUSE) {
-            getExecutor().execute(task);
-        } else {
-            task.run();
-        }
-        return mFailureType != FailureType.CANCEL_ASYNC_WITHOUT_PAUSE;
-    }
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt b/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt
deleted file mode 100644
index 7fc005a..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/TestUtils.kt
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util
-
-import android.content.Context
-import android.net.ConnectivityManager
-import android.net.http.UrlResponseInfo
-import org.hamcrest.Matchers.equalTo
-import org.junit.Assert.assertEquals
-import org.junit.Assume.assumeNotNull
-import org.junit.Assume.assumeThat
-
-fun skipIfNoInternetConnection(context: Context) {
-    val connectivityManager = context.getSystemService(ConnectivityManager::class.java)
-    assumeNotNull(
-        "This test requires a working Internet connection", connectivityManager!!.activeNetwork
-    )
-}
-
-fun assertOKStatusCode(info: UrlResponseInfo) {
-    assertEquals("Status code must be 200 OK", 200, info.httpStatusCode)
-}
-
-fun assumeOKStatusCode(info: UrlResponseInfo) {
-    assumeThat("Status code must be 200 OK", info.httpStatusCode, equalTo(200))
-}
diff --git a/Cronet/tests/cts/src/android/net/http/cts/util/UploadDataProviders.java b/Cronet/tests/cts/src/android/net/http/cts/util/UploadDataProviders.java
deleted file mode 100644
index 3b90fa0..0000000
--- a/Cronet/tests/cts/src/android/net/http/cts/util/UploadDataProviders.java
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net.http.cts.util;
-
-import android.net.http.UploadDataProvider;
-import android.net.http.UploadDataSink;
-import android.os.ParcelFileDescriptor;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.nio.channels.FileChannel;
-import java.nio.charset.StandardCharsets;
-
-/**
- * Provides implementations of {@link UploadDataProvider} for common use cases. Corresponds to
- * {@code android.net.http.apihelpers.UploadDataProviders} which is not an exposed API.
- */
-public final class UploadDataProviders {
-    /**
-     * Uploads an entire file.
-     *
-     * @param file The file to upload
-     * @return A new UploadDataProvider for the given file
-     */
-    public static UploadDataProvider create(final File file) {
-        return new FileUploadProvider(() -> new FileInputStream(file).getChannel());
-    }
-
-    /**
-     * Uploads an entire file, closing the descriptor when it is no longer needed.
-     *
-     * @param fd The file descriptor to upload
-     * @throws IllegalArgumentException if {@code fd} is not a file.
-     * @return A new UploadDataProvider for the given file descriptor
-     */
-    public static UploadDataProvider create(final ParcelFileDescriptor fd) {
-        return new FileUploadProvider(() -> {
-            if (fd.getStatSize() != -1) {
-                return new ParcelFileDescriptor.AutoCloseInputStream(fd).getChannel();
-            } else {
-                fd.close();
-                throw new IllegalArgumentException("Not a file: " + fd);
-            }
-        });
-    }
-
-    /**
-     * Uploads a ByteBuffer, from the current {@code buffer.position()} to {@code buffer.limit()}
-     *
-     * @param buffer The data to upload
-     * @return A new UploadDataProvider for the given buffer
-     */
-    public static UploadDataProvider create(ByteBuffer buffer) {
-        return new ByteBufferUploadProvider(buffer.slice());
-    }
-
-    /**
-     * Uploads {@code length} bytes from {@code data}, starting from {@code offset}
-     *
-     * @param data Array containing data to upload
-     * @param offset Offset within data to start with
-     * @param length Number of bytes to upload
-     * @return A new UploadDataProvider for the given data
-     */
-    public static UploadDataProvider create(byte[] data, int offset, int length) {
-        return new ByteBufferUploadProvider(ByteBuffer.wrap(data, offset, length).slice());
-    }
-
-    /**
-     * Uploads the contents of {@code data}
-     *
-     * @param data Array containing data to upload
-     * @return A new UploadDataProvider for the given data
-     */
-    public static UploadDataProvider create(byte[] data) {
-        return create(data, 0, data.length);
-    }
-
-    /**
-     * Uploads the UTF-8 representation of {@code data}
-     *
-     * @param data String containing data to upload
-     * @return A new UploadDataProvider for the given data
-     */
-    public static UploadDataProvider create(String data) {
-        return create(data.getBytes(StandardCharsets.UTF_8));
-    }
-
-    private interface FileChannelProvider {
-        FileChannel getChannel() throws IOException;
-    }
-
-    private static final class FileUploadProvider extends UploadDataProvider {
-        private volatile FileChannel mChannel;
-        private final FileChannelProvider mProvider;
-        /** Guards initialization of {@code mChannel} */
-        private final Object mLock = new Object();
-
-        private FileUploadProvider(FileChannelProvider provider) {
-            this.mProvider = provider;
-        }
-
-        @Override
-        public long getLength() throws IOException {
-            return getChannel().size();
-        }
-
-        @Override
-        public void read(UploadDataSink uploadDataSink, ByteBuffer byteBuffer) throws IOException {
-            if (!byteBuffer.hasRemaining()) {
-                throw new IllegalStateException("Cronet passed a buffer with no bytes remaining");
-            }
-            FileChannel channel = getChannel();
-            int bytesRead = 0;
-            while (bytesRead == 0) {
-                int read = channel.read(byteBuffer);
-                if (read == -1) {
-                    break;
-                } else {
-                    bytesRead += read;
-                }
-            }
-            uploadDataSink.onReadSucceeded(false);
-        }
-
-        @Override
-        public void rewind(UploadDataSink uploadDataSink) throws IOException {
-            getChannel().position(0);
-            uploadDataSink.onRewindSucceeded();
-        }
-
-        /**
-         * Lazily initializes the channel so that a blocking operation isn't performed
-         * on a non-executor thread.
-         */
-        private FileChannel getChannel() throws IOException {
-            if (mChannel == null) {
-                synchronized (mLock) {
-                    if (mChannel == null) {
-                        mChannel = mProvider.getChannel();
-                    }
-                }
-            }
-            return mChannel;
-        }
-
-        @Override
-        public void close() throws IOException {
-            FileChannel channel = mChannel;
-            if (channel != null) {
-                channel.close();
-            }
-        }
-    }
-
-    private static final class ByteBufferUploadProvider extends UploadDataProvider {
-        private final ByteBuffer mUploadBuffer;
-
-        private ByteBufferUploadProvider(ByteBuffer uploadBuffer) {
-            this.mUploadBuffer = uploadBuffer;
-        }
-
-        @Override
-        public long getLength() {
-            return mUploadBuffer.limit();
-        }
-
-        @Override
-        public void read(UploadDataSink uploadDataSink, ByteBuffer byteBuffer) {
-            if (!byteBuffer.hasRemaining()) {
-                throw new IllegalStateException("Cronet passed a buffer with no bytes remaining");
-            }
-            if (byteBuffer.remaining() >= mUploadBuffer.remaining()) {
-                byteBuffer.put(mUploadBuffer);
-            } else {
-                int oldLimit = mUploadBuffer.limit();
-                mUploadBuffer.limit(mUploadBuffer.position() + byteBuffer.remaining());
-                byteBuffer.put(mUploadBuffer);
-                mUploadBuffer.limit(oldLimit);
-            }
-            uploadDataSink.onReadSucceeded(false);
-        }
-
-        @Override
-        public void rewind(UploadDataSink uploadDataSink) {
-            mUploadBuffer.position(0);
-            uploadDataSink.onRewindSucceeded();
-        }
-    }
-
-    // Prevent instantiation
-    private UploadDataProviders() {}
-}
diff --git a/Cronet/tests/mts/Android.bp b/Cronet/tests/mts/Android.bp
deleted file mode 100644
index 9486e1f..0000000
--- a/Cronet/tests/mts/Android.bp
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright (C) 2023 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package {
-    default_team: "trendy_team_fwk_core_networking",
-    // See: http://go/android-license-faq
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-java_genrule {
-    name: "net-http-test-jarjar-rules",
-    tool_files: [
-        ":NetHttpTestsLibPreJarJar{.jar}",
-        "jarjar_excludes.txt",
-    ],
-    tools: [
-        "jarjar-rules-generator",
-    ],
-    out: ["net_http_test_jarjar_rules.txt"],
-    cmd: "$(location jarjar-rules-generator) " +
-        "$(location :NetHttpTestsLibPreJarJar{.jar}) " +
-        "--prefix android.net.connectivity " +
-        "--excludes $(location jarjar_excludes.txt) " +
-        "--output $(out)",
-}
-
-// Library to be used in coverage tests. cronet_java_tests can't be used directly because the common
-// tests need to inherit the NetHttpTests manifest.
-android_library {
-    name: "NetHttpTestsLibPreJarJar",
-    static_libs: [
-        "cronet_aml_api_java",
-        "cronet_aml_java__testing",
-        "cronet_java_tests",
-    ],
-    sdk_version: "module_current",
-    min_sdk_version: "30",
-}
-
-android_test {
-    name: "NetHttpTests",
-    defaults: [
-        "mts-target-sdk-version-current",
-    ],
-    static_libs: ["NetHttpTestsLibPreJarJar"],
-    jarjar_rules: ":net-http-test-jarjar-rules",
-    jni_libs: [
-        "cronet_aml_components_cronet_android_cronet__testing",
-        "cronet_aml_components_cronet_android_cronet_tests__testing",
-        "cronet_aml_third_party_netty_tcnative_netty_tcnative_so__testing",
-    ],
-    test_suites: [
-        "general-tests",
-        "mts-tethering",
-    ],
-    data: [":cronet_javatests_resources"],
-}
diff --git a/Cronet/tests/mts/AndroidManifest.xml b/Cronet/tests/mts/AndroidManifest.xml
deleted file mode 100644
index 2c56e3a..0000000
--- a/Cronet/tests/mts/AndroidManifest.xml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-          package="android.net.http.mts">
-
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.INTERNET"/>
-
-    <application android:networkSecurityConfig="@xml/network_security_config">
-        <uses-library android:name="android.test.runner" />
-    </application>
-    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
-                     android:targetPackage="android.net.http.mts"
-                     android:label="MTS tests of android.net.http">
-    </instrumentation>
-
-</manifest>
\ No newline at end of file
diff --git a/Cronet/tests/mts/AndroidTest.xml b/Cronet/tests/mts/AndroidTest.xml
deleted file mode 100644
index bccbe29..0000000
--- a/Cronet/tests/mts/AndroidTest.xml
+++ /dev/null
@@ -1,65 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-<configuration description="Runs NetHttp Mainline Tests.">
-    <!-- Only run tests if the device under test is SDK version 30 or above. -->
-    <!-- TODO Switch back to Sdk30 when b/270049141 is fixed -->
-    <object type="module_controller"
-            class="com.android.tradefed.testtype.suite.module.Sdk31ModuleController" />
-
-    <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
-        <option name="test-file-name" value="NetHttpTests.apk" />
-    </target_preparer>
-
-    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
-        <option name="push-file" key="net" value="/storage/emulated/0/chromium_tests_root/net" />
-        <option name="push-file" key="test_server" value="/storage/emulated/0/chromium_tests_root/components/cronet/testing/test_server" />
-    </target_preparer>
-
-    <option name="test-tag" value="NetHttpTests" />
-    <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
-        <option name="package" value="android.net.http.mts" />
-        <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />
-        <!-- b/298380508 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsEnforcedByDefaultEmbeddedProvider" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsIgnoredInNativeCronetEngineBuilderImpl" />
-        <!-- b/316571753 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testBaseFeatureFlagsOverridesEnabled" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAppIdMatches" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAreLoaded" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testSetLibraryLoaderIsEnforcedByDefaultEmbeddedProvider" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAtMinVersion" />
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestContextTest#testHttpFlagsAppliedIfAboveMinVersion" />
-        <!-- b/316567693 -->
-        <option name="exclude-filter" value="org.chromium.net.CronetUrlRequestTest#testSSLCertificateError" />
-        <!-- b/316559294 -->
-        <option name="exclude-filter" value="org.chromium.net.NQETest#testQuicDisabled" />
-        <!-- b/316559294 -->
-        <option name="exclude-filter" value="org.chromium.net.NQETest#testPrefsWriteRead" />
-        <!-- b/316554711-->
-        <option name="exclude-filter" value="org.chromium.net.NetworkChangesTest" />
-        <!-- b/316550794 -->
-        <option name="exclude-filter" value="org.chromium.net.impl.CronetLoggerTest#testEngineCreation" />
-        <option name="hidden-api-checks" value="false"/>
-        <option name="isolated-storage" value="false"/>
-    </test>
-
-    <!-- Only run NetHttpTests in MTS if the Tethering Mainline module is installed. -->
-    <object type="module_controller"
-            class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
-        <option name="mainline-module-package-name" value="com.google.android.tethering" />
-    </object>
-</configuration>
\ No newline at end of file
diff --git a/Cronet/tests/mts/jarjar_excludes.txt b/Cronet/tests/mts/jarjar_excludes.txt
deleted file mode 100644
index b5cdf6e..0000000
--- a/Cronet/tests/mts/jarjar_excludes.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-# Exclude some test prefixes, as they can't be found after being jarjared.
-com\.android\.testutils\..+
-# jarjar-gen can't handle some kotlin object expression, exclude packages that include them
-androidx\..+
-# don't jarjar netty as it does JNI
-io\.netty\..+
-kotlin\.test\..+
-kotlin\.reflect\..+
-org\.mockito\..+
-# Do not jarjar the api classes
-android\.net\..+
-# cronet_tests.so is not jarjared and uses base classes. We can remove this when there's a
-# separate java base target to depend on.
-org\.chromium\.base\..+
-J\.cronet_tests_N(\$.+)?
-
-# don't jarjar automatically generated FooJni files.
-org\.chromium\.net\..+Jni(\$.+)?
-
-# Do not jarjar the tests and its utils as they also do JNI with cronet_tests.so
-org\.chromium\.net\..*Test.*(\$.+)?
-org\.chromium\.net\.NativeTestServer(\$.+)?
-org\.chromium\.net\.MockUrlRequestJobFactory(\$.+)?
-org\.chromium\.net\.QuicTestServer(\$.+)?
-org\.chromium\.net\.MockCertVerifier(\$.+)?
-org\.chromium\.net\.LogcatCapture(\$.+)?
-org\.chromium\.net\.ReportingCollector(\$.+)?
-org\.chromium\.net\.Http2TestServer(\$.+)?
-org\.chromium\.net\.Http2TestHandler(\$.+)?
\ No newline at end of file
diff --git a/Cronet/tests/mts/res/raw/quicroot.pem b/Cronet/tests/mts/res/raw/quicroot.pem
deleted file mode 100644
index af21b3e..0000000
--- a/Cronet/tests/mts/res/raw/quicroot.pem
+++ /dev/null
@@ -1,19 +0,0 @@
------BEGIN CERTIFICATE-----
-MIIC/jCCAeagAwIBAgIUXOi6XoxnMUjJg4jeOwRhsdqEqEQwDQYJKoZIhvcNAQEL
-BQAwFzEVMBMGA1UEAwwMVGVzdCBSb290IENBMB4XDTIzMDYwMTExMjcwMFoXDTMz
-MDUyOTExMjcwMFowFzEVMBMGA1UEAwwMVGVzdCBSb290IENBMIIBIjANBgkqhkiG
-9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl9xCMPMIvfmJWz25AG/VtgWbqNs67HXQbXWf
-pDF2wjQpHVOYbfl7Zgly5O+5es1aUbJaGyZ9G6xuYSXKFnnYLoP7M86O05fQQBAj
-K+IE5nO6136ksCAfxCFTFfn4vhPvK8Vba5rqox4WeIXYKvHYSoiHz0ELrnFOHcyN
-Innyze7bLtkMCA1ShHpmvDCR+U3Uj6JwOfoirn29jjU/48/ORha7dcJYtYXk2eGo
-RJfrtIx20tXAaKaGnXOCGYbEVXTeQkQPqKFVzqP7+KYS/Y8eNFV35ugpLNES+44T
-bQ2QruTZdrNRjJkEoyiB/E53a0OUltB/R7Z0L0xstnKfsAf3OwIDAQABo0IwQDAP
-BgNVHRMBAf8EBTADAQH/MA4GA1UdDwEB/wQEAwIBBjAdBgNVHQ4EFgQUVdXNh2lk
-51/6hMmz0Z+OpIe8+f0wDQYJKoZIhvcNAQELBQADggEBADNg7G8n6DUrQ5doXzm9
-kOp5siX6iPs0zFReXKhIT1Gef63l3tb7AdPedF03aj9XkUt0shhNOGG5SK2k5KBQ
-MJc9muYRCAyo2xMr3rFUQdI5B51SCy5HeAMralgTHXN0Hv+TH04YfRrACVmr+5ke
-pH3bF1gYaT+Zy5/pHJnV5lcwS6/H44g9XXWIopjWCwbfzKxIuWofqL4fiToPSIYu
-MCUI4bKZipcJT5O6rdz/S9lbgYVjOJ4HAoT2icNQqNMMfULKevmF8SdJzfNd35yn
-tAKTROhIE2aQRVCclrjo/T3eyjWGGoJlGmxKbeCf/rXzcn1BRtk/UzLnbUFFlg5l
-axw=
------END CERTIFICATE-----
\ No newline at end of file
diff --git a/Cronet/tests/mts/res/values/cronet-test-rule-configuration.xml b/Cronet/tests/mts/res/values/cronet-test-rule-configuration.xml
deleted file mode 100644
index 48ce420..0000000
--- a/Cronet/tests/mts/res/values/cronet-test-rule-configuration.xml
+++ /dev/null
@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2023 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<resources>
-    <bool name="is_running_in_aosp">true</bool>
-</resources>
\ No newline at end of file
diff --git a/Cronet/tests/mts/res/xml/network_security_config.xml b/Cronet/tests/mts/res/xml/network_security_config.xml
deleted file mode 100644
index 32b7171..0000000
--- a/Cronet/tests/mts/res/xml/network_security_config.xml
+++ /dev/null
@@ -1,47 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<!--
-  ~ Copyright (C) 2022 The Android Open Source Project
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~      http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<network-security-config>
-  <base-config>
-    <trust-anchors>
-      <certificates src="@raw/quicroot"/>
-      <certificates src="system"/>
-    </trust-anchors>
-  </base-config>
-  <!-- Since Android 9 (API 28) cleartext support is disabled by default, this
-       causes some of our tests to fail (see crbug/1220357).
-       The following configs allow http requests for the domains used in these
-       tests.
-
-       TODO(stefanoduo): Figure out if we really need to use http for these tests
-  -->
-  <domain-config cleartextTrafficPermitted="true">
-    <!-- Used as the base URL by native test server (net::EmbeddedTestServer) -->
-    <domain includeSubdomains="true">127.0.0.1</domain>
-    <!-- Used by CronetHttpURLConnectionTest#testIOExceptionInterruptRethrown -->
-    <domain includeSubdomains="true">localhost</domain>
-    <!-- Used by CronetHttpURLConnectionTest#testBadIP -->
-    <domain includeSubdomains="true">0.0.0.0</domain>
-    <!-- Used by CronetHttpURLConnectionTest#testSetUseCachesFalse -->
-    <domain includeSubdomains="true">host-cache-test-host</domain>
-    <!-- Used by CronetHttpURLConnectionTest#testBadHostname -->
-    <domain includeSubdomains="true">this-weird-host-name-does-not-exist</domain>
-    <!-- Used by CronetUrlRequestContextTest#testHostResolverRules -->
-    <domain includeSubdomains="true">some-weird-hostname</domain>
-  </domain-config>
-</network-security-config>
\ No newline at end of file
diff --git a/Cronet/tools/import/copy.bara.sky b/Cronet/tools/import/copy.bara.sky
deleted file mode 100644
index 61e3ba4..0000000
--- a/Cronet/tools/import/copy.bara.sky
+++ /dev/null
@@ -1,127 +0,0 @@
-# Copyright 2023 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-common_excludes = [
-    # Exclude all Android build files
-    "**/Android.bp",
-    "**/Android.mk",
-
-    # Exclude existing *OWNERS files
-    "**/*OWNERS",
-    "**/.git/**",
-    "**/.gitignore",
-]
-
-cronet_origin_files = glob(
-    include = [
-        "base/**",
-        "build/**",
-        "build/buildflag.h",
-        "chrome/VERSION",
-        "components/cronet/**",
-        "components/metrics/**",
-        "components/nacl/**",
-        "components/prefs/**",
-        "crypto/**",
-        "ipc/**",
-        "net/**",
-        # Note: Only used for tests.
-        "testing/**",
-        "url/**",
-        "LICENSE",
-    ],
-    exclude = common_excludes + [
-        # Per aosp/2367109
-        "build/android/CheckInstallApk-debug.apk",
-        "build/android/unused_resources/**",
-        "build/linux/**",
-
-        # Per aosp/2374766
-        "components/cronet/ios/**",
-        "components/cronet/native/**",
-
-        # Per aosp/2399270
-        "testing/buildbot/**",
-
-        # Exclude all third-party directories. Those are specified explicitly
-        # below, so no dependency can accidentally creep in.
-        "**/third_party/**",
-    ],
-) + glob(
-    # Explicitly include third-party dependencies.
-    # Note: some third-party dependencies include a third_party folder within
-    # them. So far, this has not become a problem.
-    include = [
-        "base/third_party/cityhash/**",
-        "base/third_party/cityhash_v103/**",
-        "base/third_party/double_conversion/**",
-        "base/third_party/dynamic_annotations/**",
-        "base/third_party/icu/**",
-        "base/third_party/nspr/**",
-        "base/third_party/superfasthash/**",
-        "base/third_party/valgrind/**",
-        # Those are temporarily needed until Chromium finish the migration
-        # of libc++[abi]
-        "buildtools/third_party/libc++/**",
-        "buildtools/third_party/libc++abi/**",
-        # Note: Only used for tests.
-        "net/third_party/nist-pkits/**",
-        "net/third_party/quiche/**",
-        "net/third_party/uri_template/**",
-        "third_party/abseil-cpp/**",
-        "third_party/android_ndk/sources/android/cpufeatures/**",
-        "third_party/ashmem/**",
-        "third_party/boringssl/**",
-        "third_party/brotli/**",
-        # Note: Only used for tests.
-        "third_party/ced/**",
-        "third_party/cpu_features/**",
-        # Note: Only used for tests.
-        "third_party/google_benchmark/**",
-        # Note: Only used for tests.
-        "third_party/googletest/**",
-        "third_party/icu/**",
-        "third_party/jni_zero/**",
-        "third_party/libc++/**",
-        "third_party/libc++abi/**",
-        "third_party/libevent/**",
-        # Note: Only used for tests.
-        "third_party/libxml/**",
-        # Note: Only used for tests.
-        "third_party/lss/**",
-        "third_party/metrics_proto/**",
-        "third_party/modp_b64/**",
-        "third_party/protobuf/**",
-        # Note: Only used for tests.
-        "third_party/quic_trace/**",
-        # Note: Cronet currently uses Android's zlib
-        # "third_party/zlib/**",
-        "url/third_party/mozilla/**",
-    ],
-    exclude = common_excludes,
-)
-
-core.workflow(
-    name = "import_cronet",
-    authoring = authoring.overwrite("Cronet Mainline Eng <cronet-mainline-eng+copybara@google.com>"),
-    # Origin folder is specified via source_ref argument, see import_cronet.sh
-    origin = folder.origin(),
-    origin_files = cronet_origin_files,
-    destination = git.destination(
-        # The destination URL is set by the invoking script.
-        url = "overwritten/by/script",
-        push = "upstream-import",
-    ),
-    mode = "SQUASH",
-)
diff --git a/Cronet/tools/import/import_cronet.sh b/Cronet/tools/import/import_cronet.sh
deleted file mode 100755
index 0f04af7..0000000
--- a/Cronet/tools/import/import_cronet.sh
+++ /dev/null
@@ -1,146 +0,0 @@
-#!/bin/bash
-
-# Copyright 2023 Google Inc. All rights reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Script to invoke copybara locally to import Cronet into Android.
-# Inputs:
-#  Environment:
-#   ANDROID_BUILD_TOP: path the root of the current Android directory.
-#  Arguments:
-#   -l rev: The last revision that was imported.
-#  Optional Arguments:
-#   -n rev: The new revision to import.
-#   -f: Force copybara to ignore a failure to find the last imported revision.
-
-set -e -x
-
-OPTSTRING=fl:n:
-
-usage() {
-    cat <<EOF
-Usage: import_cronet.sh -n new-rev [-l last-rev] [-f]
-EOF
-    exit 1
-}
-
-COPYBARA_FOLDER_ORIGIN="/tmp/copybara-origin"
-
-#######################################
-# Create local upstream-import branch in external/cronet.
-# Globals:
-#   ANDROID_BUILD_TOP
-# Arguments:
-#   none
-#######################################
-setup_upstream_import_branch() {
-    local git_dir="${ANDROID_BUILD_TOP}/external/cronet"
-
-    (cd "${git_dir}" && git fetch aosp upstream-import:upstream-import)
-}
-
-#######################################
-# Setup folder.origin for copybara inside /tmp
-# Globals:
-#   COPYBARA_FOLDER_ORIGIN
-# Arguments:
-#   new_rev, string
-#######################################
-setup_folder_origin() (
-    local _new_rev=$1
-    mkdir -p "${COPYBARA_FOLDER_ORIGIN}"
-    cd "${COPYBARA_FOLDER_ORIGIN}"
-
-    if [ -d src ]; then
-        (cd src && git fetch --tags && git checkout "${_new_rev}")
-    else
-        # For this to work _new_rev must be a branch or a tag.
-        git clone --depth=1 --branch "${_new_rev}" https://chromium.googlesource.com/chromium/src.git
-    fi
-
-
-    cat <<EOF >.gclient
-solutions = [
-  {
-    "name": "src",
-    "url": "https://chromium.googlesource.com/chromium/src.git",
-    "managed": False,
-    "custom_deps": {},
-    "custom_vars": {},
-  },
-]
-target_os = ["android"]
-EOF
-    cd src
-    # Set appropriate gclient flags to speed up syncing.
-    gclient sync \
-        --no-history \
-        --shallow \
-        --delete_unversioned_trees
-)
-
-#######################################
-# Runs the copybara import of Chromium
-# Globals:
-#   ANDROID_BUILD_TOP
-#   COPYBARA_FOLDER_ORIGIN
-# Arguments:
-#   last_rev, string or empty
-#   force, string or empty
-#######################################
-do_run_copybara() {
-    local _last_rev=$1
-    local _force=$2
-
-    local -a flags
-    flags+=(--git-destination-url="file://${ANDROID_BUILD_TOP}/external/cronet")
-    flags+=(--repo-timeout 3m)
-
-    # buildtools/third_party/libc++ contains an invalid symlink
-    flags+=(--folder-origin-ignore-invalid-symlinks)
-    flags+=(--git-no-verify)
-
-    if [ ! -z "${_force}" ]; then
-        flags+=(--force)
-    fi
-
-    if [ ! -z "${_last_rev}" ]; then
-        flags+=(--last-rev "${_last_rev}")
-    fi
-
-    /google/bin/releases/copybara/public/copybara/copybara \
-        "${flags[@]}" \
-        "${ANDROID_BUILD_TOP}/packages/modules/Connectivity/Cronet/tools/import/copy.bara.sky" \
-        import_cronet "${COPYBARA_FOLDER_ORIGIN}/src"
-}
-
-while getopts $OPTSTRING opt; do
-    case "${opt}" in
-        f) force=true ;;
-        l) last_rev="${OPTARG}" ;;
-        n) new_rev="${OPTARG}" ;;
-        ?) usage ;;
-        *) echo "'${opt}' '${OPTARG}'"
-    esac
-done
-
-if [ -z "${new_rev}" ]; then
-    echo "-n argument required"
-    usage
-fi
-
-setup_upstream_import_branch
-setup_folder_origin "${new_rev}"
-do_run_copybara "${last_rev}" "${force}"
-
diff --git a/DnsResolver/DnsBpfHelper.cpp b/DnsResolver/DnsBpfHelper.cpp
index de8bef5..0719ade 100644
--- a/DnsResolver/DnsBpfHelper.cpp
+++ b/DnsResolver/DnsBpfHelper.cpp
@@ -69,9 +69,10 @@
   // state, making it a trustworthy source. Since this library primarily serves DNS resolvers,
   // relying solely on V+ data prevents erroneous blocking of DNS queries.
   if (android::modules::sdklevel::IsAtLeastV() && metered) {
-    // The background data setting (PENALTY_BOX_MATCH) and unrestricted data usage setting
-    // (HAPPY_BOX_MATCH) for individual apps override the system wide Data Saver setting.
-    if (uidRules & PENALTY_BOX_MATCH) return true;
+    // The background data setting (PENALTY_BOX_USER_MATCH, PENALTY_BOX_ADMIN_MATCH) and
+    // unrestricted data usage setting (HAPPY_BOX_MATCH) for individual apps override the system
+    // wide Data Saver setting.
+    if (uidRules & (PENALTY_BOX_USER_MATCH | PENALTY_BOX_ADMIN_MATCH)) return true;
     if (uidRules & HAPPY_BOX_MATCH) return false;
 
     auto dataSaverSetting = mDataSaverEnabledMap.readValue(DATA_SAVER_ENABLED_KEY);
diff --git a/DnsResolver/DnsBpfHelperTest.cpp b/DnsResolver/DnsBpfHelperTest.cpp
index 67b5b95..18a5df4 100644
--- a/DnsResolver/DnsBpfHelperTest.cpp
+++ b/DnsResolver/DnsBpfHelperTest.cpp
@@ -158,23 +158,33 @@
     }
   } testConfigs[]{
     // clang-format off
-    // enabledRules, dataSaverEnabled, uidRules,                                        blocked
-    {NO_MATCH,       false,            NO_MATCH,                                        false},
-    {NO_MATCH,       false,            PENALTY_BOX_MATCH,                               true},
-    {NO_MATCH,       false,            HAPPY_BOX_MATCH,                                 false},
-    {NO_MATCH,       false,            PENALTY_BOX_MATCH|HAPPY_BOX_MATCH,               true},
-    {NO_MATCH,       true,             NO_MATCH,                                        true},
-    {NO_MATCH,       true,             PENALTY_BOX_MATCH,                               true},
-    {NO_MATCH,       true,             HAPPY_BOX_MATCH,                                 false},
-    {NO_MATCH,       true,             PENALTY_BOX_MATCH|HAPPY_BOX_MATCH,               true},
-    {STANDBY_MATCH,  false,            STANDBY_MATCH,                                   true},
-    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_MATCH,                 true},
-    {STANDBY_MATCH,  false,            STANDBY_MATCH|HAPPY_BOX_MATCH,                   true},
-    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_MATCH|HAPPY_BOX_MATCH, true},
-    {STANDBY_MATCH,  true,             STANDBY_MATCH,                                   true},
-    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_MATCH,                 true},
-    {STANDBY_MATCH,  true,             STANDBY_MATCH|HAPPY_BOX_MATCH,                   true},
-    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_MATCH|HAPPY_BOX_MATCH, true},
+    // enabledRules, dataSaverEnabled, uidRules,                                            blocked
+    {NO_MATCH,       false,            NO_MATCH,                                             false},
+    {NO_MATCH,       false,            PENALTY_BOX_USER_MATCH,                                true},
+    {NO_MATCH,       false,            PENALTY_BOX_ADMIN_MATCH,                               true},
+    {NO_MATCH,       false,            PENALTY_BOX_USER_MATCH|PENALTY_BOX_ADMIN_MATCH,        true},
+    {NO_MATCH,       false,            HAPPY_BOX_MATCH,                                      false},
+    {NO_MATCH,       false,            PENALTY_BOX_USER_MATCH|HAPPY_BOX_MATCH,                true},
+    {NO_MATCH,       false,            PENALTY_BOX_ADMIN_MATCH|HAPPY_BOX_MATCH,               true},
+    {NO_MATCH,       true,             NO_MATCH,                                              true},
+    {NO_MATCH,       true,             PENALTY_BOX_USER_MATCH,                                true},
+    {NO_MATCH,       true,             PENALTY_BOX_ADMIN_MATCH,                               true},
+    {NO_MATCH,       true,             PENALTY_BOX_USER_MATCH|PENALTY_BOX_ADMIN_MATCH,        true},
+    {NO_MATCH,       true,             HAPPY_BOX_MATCH,                                      false},
+    {NO_MATCH,       true,             PENALTY_BOX_USER_MATCH|HAPPY_BOX_MATCH,                true},
+    {NO_MATCH,       true,             PENALTY_BOX_ADMIN_MATCH|HAPPY_BOX_MATCH,               true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH,                                         true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_USER_MATCH,                  true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_ADMIN_MATCH,                 true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH|HAPPY_BOX_MATCH,                         true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_USER_MATCH|HAPPY_BOX_MATCH,  true},
+    {STANDBY_MATCH,  false,            STANDBY_MATCH|PENALTY_BOX_ADMIN_MATCH|HAPPY_BOX_MATCH, true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH,                                         true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_USER_MATCH,                  true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_ADMIN_MATCH,                 true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH|HAPPY_BOX_MATCH,                         true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_USER_MATCH|HAPPY_BOX_MATCH,  true},
+    {STANDBY_MATCH,  true,             STANDBY_MATCH|PENALTY_BOX_ADMIN_MATCH|HAPPY_BOX_MATCH, true},
     // clang-format on
   };
 
diff --git a/OWNERS_core_networking b/OWNERS_core_networking
index 83f798a..6d8ed4a 100644
--- a/OWNERS_core_networking
+++ b/OWNERS_core_networking
@@ -1,10 +1,6 @@
-chiachangwang@google.com
-cken@google.com
 jchalard@google.com
 junyulai@google.com
-lifr@google.com
 lorenzo@google.com
-markchien@google.com
 martinwu@google.com
 maze@google.com
 motomuman@google.com
@@ -12,7 +8,5 @@
 prohr@google.com
 reminv@google.com
 satk@google.com
-waynema@google.com
 xiaom@google.com
-yumike@google.com
 yuyanghuang@google.com
diff --git a/OWNERS_core_networking_xts b/OWNERS_core_networking_xts
index 7612210..9e4e4a1 100644
--- a/OWNERS_core_networking_xts
+++ b/OWNERS_core_networking_xts
@@ -1,9 +1,12 @@
 lorenzo@google.com
 satk@google.com #{LAST_RESORT_SUGGESTION}
 
-# For cherry-picks of CLs that are already merged in aosp/master, or flaky test fixes.
+# For cherry-picks of CLs that are already merged in aosp/master, flaky test
+# fixes, or no-op refactors.
 jchalard@google.com #{LAST_RESORT_SUGGESTION}
+# In addition to cherry-picks, flaky test fixes and no-op refactors, also for
+# APF firmware tests (to verify correct behaviour of the wifi APF interpreter)
 maze@google.com #{LAST_RESORT_SUGGESTION}
-# In addition to cherry-picks and flaky test fixes, also for incremental changes on NsdManager tests
-# to increase coverage for existing behavior, and testing of bug fixes in NsdManager
+# In addition to cherry-picks, flaky test fixes and no-op refactors, also for
+# NsdManager tests
 reminv@google.com #{LAST_RESORT_SUGGESTION}
diff --git a/TEST_MAPPING b/TEST_MAPPING
index ab3ed66..4cf93a8 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,4 +1,140 @@
 {
+  "captiveportal-networkstack-resolve-tethering-mainline-presubmit": [
+    {
+      "name": "CtsNetTestCasesLatestSdk",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        }
+      ]
+    },
+    {
+      "name": "CtsNetTestCasesMaxTargetSdk30",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        }
+      ]
+    },
+    {
+      "name": "CtsNetTestCasesMaxTargetSdk31",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        }
+      ]
+    },
+    {
+      "name": "CtsNetTestCasesMaxTargetSdk33",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        }
+      ]
+    },
+    {
+      "name": "bpf_existence_test"
+    },
+    {
+      "name": "connectivity_native_test"
+    },
+    {
+      "name": "netd_updatable_unit_test"
+    },
+    {
+      "name": "ConnectivityCoverageTests",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        }
+      ]
+    },
+    {
+      "name": "libnetworkstats_test"
+    },
+    {
+      "name": "CtsTetheringTestLatestSdk",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.NetworkStackModuleTest"
+        }
+      ]
+    }
+  ],
+  "captiveportal-networkstack-mainline-presubmit": [
+    // Test with APK modules only, in cases where APEX is not supported, or the other modules
+    // were simply not updated
+    {
+      "name": "CtsNetTestCasesLatestSdk",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.ConnectivityModuleTest"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.DnsResolverModuleTest"
+        }
+      ]
+    }
+  ],
+  "tethering-mainline-presubmit": [
+    // Test with connectivity/tethering module only, to catch integration issues with older versions
+    // of other modules. "new tethering + old NetworkStack" is not a configuration that should
+    // really exist in the field, but there is no strong guarantee, and it is required by MTS
+    // testing for module qualification, where modules are tested independently.
+    {
+      "name": "CtsNetTestCasesLatestSdk",
+      "options": [
+        {
+          "exclude-annotation": "com.android.testutils.SkipPresubmit"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.SkipMainlinePresubmit"
+        },
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.DnsResolverModuleTest"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.NetworkStackModuleTest"
+        }
+      ]
+    }
+  ],
   "presubmit": [
     {
       "name": "ConnectivityCoverageTests",
@@ -104,19 +240,6 @@
     },
     {
       "name": "FrameworksNetIntegrationTests"
-    },
-    // Runs both NetHttpTests and CtsNetHttpTestCases
-    {
-      "name": "NetHttpCoverageTests",
-      "options": [
-        {
-          "exclude-annotation": "com.android.testutils.SkipPresubmit"
-        },
-        {
-          // These sometimes take longer than 1 min which is the presubmit timeout
-          "exclude-annotation": "androidx.test.filters.LargeTest"
-        }
-      ]
     }
   ],
   "postsubmit": [
@@ -144,9 +267,6 @@
     },
     {
       "name": "FrameworksNetTests"
-    },
-    {
-      "name": "NetHttpCoverageTests"
     }
   ],
   "mainline-presubmit": [
@@ -246,6 +366,9 @@
         },
         {
           "exclude-annotation": "com.android.testutils.DnsResolverModuleTest"
+        },
+        {
+          "exclude-annotation": "com.android.testutils.NetworkStackModuleTest"
         }
       ]
     },
@@ -270,18 +393,6 @@
       "name": "libnetworkstats_test[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     },
     {
-      "name": "NetHttpCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]",
-      "options": [
-        {
-          "exclude-annotation": "com.android.testutils.SkipPresubmit"
-        },
-        {
-          // These sometimes take longer than 1 min which is the presubmit timeout
-          "exclude-annotation": "androidx.test.filters.LargeTest"
-        }
-      ]
-    },
-    {
       "name": "CtsTetheringTestLatestSdk[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]",
       "options": [
         {
@@ -329,6 +440,9 @@
       "path": "packages/modules/CaptivePortalLogin"
     },
     {
+      "path": "external/cronet"
+    },
+    {
       "path": "vendor/xts/gts-tests/hostsidetests/networkstack"
     }
   ]
diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index e4e6c70..e84573b 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -74,6 +74,8 @@
         "net-utils-device-common-bpf",
         "net-utils-device-common-ip",
         "net-utils-device-common-netlink",
+        "net-utils-device-common-struct",
+        "net-utils-device-common-struct-base",
         "netd-client",
         "tetheringstatsprotos",
     ],
@@ -98,7 +100,6 @@
     ],
     static_libs: [
         "NetworkStackApiCurrentShims",
-        "net-utils-device-common-struct",
     ],
     apex_available: ["com.android.tethering"],
     lint: {
@@ -115,7 +116,6 @@
     ],
     static_libs: [
         "NetworkStackApiStableShims",
-        "net-utils-device-common-struct",
     ],
     apex_available: ["com.android.tethering"],
     lint: {
@@ -126,7 +126,7 @@
 // Due to b/143733063, APK can't access a jni lib that is in APEX (but not in the APK).
 cc_library {
     name: "libcom_android_networkstack_tethering_util_jni",
-    sdk_version: "30",
+    sdk_version: "current",
     apex_available: [
         "com.android.tethering",
     ],
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index 30bdf37..8ed5ac0 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -103,16 +103,17 @@
         "dscpPolicy.o",
         "netd.o",
         "offload.o",
-        "offload@btf.o",
+        "offload@mainline.o",
         "test.o",
-        "test@btf.o",
+        "test@mainline.o",
     ],
     apps: [
         "ServiceConnectivityResources",
     ],
     prebuilts: [
         "current_sdkinfo",
-        "netbpfload.mainline.rc",
+        "netbpfload.33rc",
+        "netbpfload.35rc",
         "ot-daemon.init.34rc",
     ],
     manifest: "manifest.json",
diff --git a/Tethering/common/TetheringLib/api/system-current.txt b/Tethering/common/TetheringLib/api/system-current.txt
index a287b42..cccafd5 100644
--- a/Tethering/common/TetheringLib/api/system-current.txt
+++ b/Tethering/common/TetheringLib/api/system-current.txt
@@ -47,6 +47,7 @@
     field public static final int TETHERING_INVALID = -1; // 0xffffffff
     field public static final int TETHERING_NCM = 4; // 0x4
     field public static final int TETHERING_USB = 1; // 0x1
+    field @FlaggedApi("com.android.net.flags.tethering_request_virtual") public static final int TETHERING_VIRTUAL = 7; // 0x7
     field public static final int TETHERING_WIFI = 0; // 0x0
     field public static final int TETHERING_WIFI_P2P = 3; // 0x3
     field public static final int TETHER_ERROR_DHCPSERVER_ERROR = 12; // 0xc
diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
index 7b769d4..2963f87 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
@@ -68,6 +68,8 @@
     public static class Flags {
         static final String TETHERING_REQUEST_WITH_SOFT_AP_CONFIG =
                 "com.android.net.flags.tethering_request_with_soft_ap_config";
+        static final String TETHERING_REQUEST_VIRTUAL =
+                "com.android.net.flags.tethering_request_virtual";
     }
 
     private static final String TAG = TetheringManager.class.getSimpleName();
@@ -195,10 +197,18 @@
     public static final int TETHERING_WIGIG = 6;
 
     /**
+     * VIRTUAL tethering type.
+     * @hide
+     */
+    @FlaggedApi(Flags.TETHERING_REQUEST_VIRTUAL)
+    @SystemApi
+    public static final int TETHERING_VIRTUAL = 7;
+
+    /**
      * The int value of last tethering type.
      * @hide
      */
-    public static final int MAX_TETHERING_TYPE = TETHERING_WIGIG;
+    public static final int MAX_TETHERING_TYPE = TETHERING_VIRTUAL;
 
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
diff --git a/Tethering/res/values-fa/strings.xml b/Tethering/res/values-fa/strings.xml
index fdfd5c4..d7f2543 100644
--- a/Tethering/res/values-fa/strings.xml
+++ b/Tethering/res/values-fa/strings.xml
@@ -17,7 +17,7 @@
 <resources xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
     <string name="tethered_notification_title" msgid="5350162111436634622">"اشتراک‌گذاری اینترنت یا نقطه اتصال فعال است"</string>
-    <string name="tethered_notification_message" msgid="2338023450330652098">"برای راه‌اندازی، تک‌ضرب بزنید."</string>
+    <string name="tethered_notification_message" msgid="2338023450330652098">"برای راه‌اندازی، ضربه بزنید."</string>
     <string name="disable_tether_notification_title" msgid="3183576627492925522">"اشتراک‌گذاری اینترنت غیرفعال است"</string>
     <string name="disable_tether_notification_message" msgid="6655882039707534929">"برای جزئیات، با سرپرستتان تماس بگیرید"</string>
     <string name="notification_channel_tethering_status" msgid="7030733422705019001">"وضعیت نقطه اتصال و اشتراک‌گذاری اینترنت"</string>
diff --git a/Tethering/src/android/net/ip/IpServer.java b/Tethering/src/android/net/ip/IpServer.java
index 544ba01..fe5a0c6 100644
--- a/Tethering/src/android/net/ip/IpServer.java
+++ b/Tethering/src/android/net/ip/IpServer.java
@@ -34,7 +34,6 @@
 import static com.android.net.module.util.Inet4AddressUtils.intToInet4AddressHTH;
 import static com.android.net.module.util.NetworkStackConstants.RFC7421_PREFIX_LENGTH;
 import static com.android.networkstack.tethering.TetheringConfiguration.USE_SYNC_SM;
-import static com.android.networkstack.tethering.UpstreamNetworkState.isVcnInterface;
 import static com.android.networkstack.tethering.util.PrefixUtils.asIpPrefix;
 import static com.android.networkstack.tethering.util.TetheringMessageBase.BASE_IPSERVER;
 
@@ -75,19 +74,15 @@
 import com.android.net.module.util.NetdUtils;
 import com.android.net.module.util.SdkUtil.LateSdk;
 import com.android.net.module.util.SharedLog;
+import com.android.net.module.util.SyncStateMachine.StateInfo;
 import com.android.net.module.util.ip.InterfaceController;
-import com.android.net.module.util.ip.IpNeighborMonitor;
-import com.android.net.module.util.ip.IpNeighborMonitor.NeighborEvent;
 import com.android.networkstack.tethering.BpfCoordinator;
-import com.android.networkstack.tethering.BpfCoordinator.ClientInfo;
-import com.android.networkstack.tethering.BpfCoordinator.Ipv6DownstreamRule;
 import com.android.networkstack.tethering.PrivateAddressCoordinator;
 import com.android.networkstack.tethering.TetheringConfiguration;
 import com.android.networkstack.tethering.metrics.TetheringMetrics;
 import com.android.networkstack.tethering.util.InterfaceSet;
 import com.android.networkstack.tethering.util.PrefixUtils;
 import com.android.networkstack.tethering.util.StateMachineShim;
-import com.android.networkstack.tethering.util.SyncStateMachine.StateInfo;
 
 import java.net.Inet4Address;
 import java.net.Inet6Address;
@@ -137,8 +132,8 @@
     private static final MacAddress NULL_MAC_ADDRESS = MacAddress.fromString("00:00:00:00:00:00");
 
     private static final String TAG = "IpServer";
-    private static final boolean DBG = false;
-    private static final boolean VDBG = false;
+    private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+    private static final boolean VDBG = Log.isLoggable(TAG, Log.VERBOSE);
     private static final Class[] sMessageClasses = {
             IpServer.class
     };
@@ -189,12 +184,6 @@
             return new DadProxy(handler, ifParams);
         }
 
-        /** Create an IpNeighborMonitor to be used by this IpServer */
-        public IpNeighborMonitor getIpNeighborMonitor(Handler handler, SharedLog log,
-                IpNeighborMonitor.NeighborEventConsumer consumer) {
-            return new IpNeighborMonitor(handler, log, consumer);
-        }
-
         /** Create a RouterAdvertisementDaemon instance to be used by IpServer.*/
         public RouterAdvertisementDaemon getRouterAdvertisementDaemon(InterfaceParams ifParams) {
             return new RouterAdvertisementDaemon(ifParams);
@@ -234,13 +223,11 @@
     public static final int CMD_TETHER_CONNECTION_CHANGED   = BASE_IPSERVER + 9;
     // new IPv6 tethering parameters need to be processed
     public static final int CMD_IPV6_TETHER_UPDATE          = BASE_IPSERVER + 10;
-    // new neighbor cache entry on our interface
-    public static final int CMD_NEIGHBOR_EVENT              = BASE_IPSERVER + 11;
     // request from DHCP server that it wants to have a new prefix
-    public static final int CMD_NEW_PREFIX_REQUEST          = BASE_IPSERVER + 12;
+    public static final int CMD_NEW_PREFIX_REQUEST          = BASE_IPSERVER + 11;
     // request from PrivateAddressCoordinator to restart tethering.
-    public static final int CMD_NOTIFY_PREFIX_CONFLICT      = BASE_IPSERVER + 13;
-    public static final int CMD_SERVICE_FAILED_TO_START     = BASE_IPSERVER + 14;
+    public static final int CMD_NOTIFY_PREFIX_CONFLICT      = BASE_IPSERVER + 12;
+    public static final int CMD_SERVICE_FAILED_TO_START     = BASE_IPSERVER + 13;
 
     private final State mInitialState;
     private final State mLocalHotspotState;
@@ -301,18 +288,9 @@
     private List<TetheredClient> mDhcpLeases = Collections.emptyList();
 
     private int mLastIPv6UpstreamIfindex = 0;
-    private boolean mUpstreamSupportsBpf = false;
     @NonNull
     private Set<IpPrefix> mLastIPv6UpstreamPrefixes = Collections.emptySet();
 
-    private class MyNeighborEventConsumer implements IpNeighborMonitor.NeighborEventConsumer {
-        public void accept(NeighborEvent e) {
-            sendMessage(CMD_NEIGHBOR_EVENT, e);
-        }
-    }
-
-    private final IpNeighborMonitor mIpNeighborMonitor;
-
     private LinkAddress mIpv4Address;
 
     private final TetheringMetrics mTetheringMetrics;
@@ -346,15 +324,6 @@
         mLastError = TETHER_ERROR_NO_ERROR;
         mServingMode = STATE_AVAILABLE;
 
-        mIpNeighborMonitor = mDeps.getIpNeighborMonitor(getHandler(), mLog,
-                new MyNeighborEventConsumer());
-
-        // IP neighbor monitor monitors the neighbor events for adding/removing IPv6 downstream rule
-        // per client. If BPF offload is not supported, don't start listening for neighbor events.
-        if (mBpfCoordinator.isUsingBpfOffload() && !mIpNeighborMonitor.start()) {
-            mLog.e("Failed to create IpNeighborMonitor on " + mIfaceName);
-        }
-
         mInitialState = new InitialState();
         mLocalHotspotState = new LocalHotspotState();
         mTetheredState = new TetheredState();
@@ -410,6 +379,22 @@
         return mIpv4Address;
     }
 
+    /** The IPv6 upstream interface index */
+    public int getIpv6UpstreamIfindex() {
+        return mLastIPv6UpstreamIfindex;
+    }
+
+    /** The IPv6 upstream interface prefixes */
+    @NonNull
+    public Set<IpPrefix> getIpv6UpstreamPrefixes() {
+        return Collections.unmodifiableSet(mLastIPv6UpstreamPrefixes);
+    }
+
+    /** The interface parameters which IpServer is using */
+    public InterfaceParams getInterfaceParams() {
+        return mInterfaceParams;
+    }
+
     /**
      * Get the latest list of DHCP leases that was reported. Must be called on the IpServer looper
      * thread.
@@ -813,14 +798,15 @@
         setRaParams(params);
 
         // Not support BPF on virtual upstream interface
-        final boolean upstreamSupportsBpf = upstreamIface != null && !isVcnInterface(upstreamIface);
         final Set<IpPrefix> upstreamPrefixes = params != null ? params.prefixes : Set.of();
-        updateIpv6ForwardingRules(mLastIPv6UpstreamIfindex, mLastIPv6UpstreamPrefixes,
-                upstreamIfIndex, upstreamPrefixes, upstreamSupportsBpf);
+        // mBpfCoordinator#updateIpv6UpstreamInterface must be called before updating
+        // mLastIPv6UpstreamIfindex and mLastIPv6UpstreamPrefixes because BpfCoordinator will call
+        // IpServer#getIpv6UpstreamIfindex and IpServer#getIpv6UpstreamPrefixes to retrieve current
+        // upstream interface index and prefixes when handling upstream changes.
+        mBpfCoordinator.updateIpv6UpstreamInterface(this, upstreamIfIndex, upstreamPrefixes);
         mLastIPv6LinkProperties = v6only;
         mLastIPv6UpstreamIfindex = upstreamIfIndex;
         mLastIPv6UpstreamPrefixes = upstreamPrefixes;
-        mUpstreamSupportsBpf = upstreamSupportsBpf;
         if (mDadProxy != null) {
             mDadProxy.setUpstreamIface(upstreamIfaceParams);
         }
@@ -964,77 +950,6 @@
         }
     }
 
-    private int getInterfaceIndexForRule(int ifindex, boolean supportsBpf) {
-        return supportsBpf ? ifindex : NO_UPSTREAM;
-    }
-
-    // Handles updates to IPv6 forwarding rules if the upstream or its prefixes change.
-    private void updateIpv6ForwardingRules(int prevUpstreamIfindex,
-            @NonNull Set<IpPrefix> prevUpstreamPrefixes, int upstreamIfindex,
-            @NonNull Set<IpPrefix> upstreamPrefixes, boolean upstreamSupportsBpf) {
-        // If the upstream interface has changed, remove all rules and re-add them with the new
-        // upstream interface. If upstream is a virtual network, treated as no upstream.
-        if (prevUpstreamIfindex != upstreamIfindex
-                || !prevUpstreamPrefixes.equals(upstreamPrefixes)) {
-            mBpfCoordinator.updateAllIpv6Rules(this, this.mInterfaceParams,
-                    getInterfaceIndexForRule(upstreamIfindex, upstreamSupportsBpf),
-                    upstreamPrefixes);
-        }
-    }
-
-    // Handles updates to IPv6 downstream rules if a neighbor event is received.
-    private void addOrRemoveIpv6Downstream(NeighborEvent e) {
-        // mInterfaceParams must be non-null or the event would not have arrived.
-        if (e == null) return;
-        if (!(e.ip instanceof Inet6Address) || e.ip.isMulticastAddress()
-                || e.ip.isLoopbackAddress() || e.ip.isLinkLocalAddress()) {
-            return;
-        }
-
-        // When deleting rules, we still need to pass a non-null MAC, even though it's ignored.
-        // Do this here instead of in the Ipv6DownstreamRule constructor to ensure that we
-        // never add rules with a null MAC, only delete them.
-        MacAddress dstMac = e.isValid() ? e.macAddr : NULL_MAC_ADDRESS;
-        Ipv6DownstreamRule rule = new Ipv6DownstreamRule(
-                getInterfaceIndexForRule(mLastIPv6UpstreamIfindex, mUpstreamSupportsBpf),
-                mInterfaceParams.index, (Inet6Address) e.ip, mInterfaceParams.macAddr, dstMac);
-        if (e.isValid()) {
-            mBpfCoordinator.addIpv6DownstreamRule(this, rule);
-        } else {
-            mBpfCoordinator.removeIpv6DownstreamRule(this, rule);
-        }
-    }
-
-    // TODO: consider moving into BpfCoordinator.
-    private void updateClientInfoIpv4(NeighborEvent e) {
-        if (e == null) return;
-        if (!(e.ip instanceof Inet4Address) || e.ip.isMulticastAddress()
-                || e.ip.isLoopbackAddress() || e.ip.isLinkLocalAddress()) {
-            return;
-        }
-
-        // When deleting clients, IpServer still need to pass a non-null MAC, even though it's
-        // ignored. Do this here instead of in the ClientInfo constructor to ensure that
-        // IpServer never add clients with a null MAC, only delete them.
-        final MacAddress clientMac = e.isValid() ? e.macAddr : NULL_MAC_ADDRESS;
-        final ClientInfo clientInfo = new ClientInfo(mInterfaceParams.index,
-                mInterfaceParams.macAddr, (Inet4Address) e.ip, clientMac);
-        if (e.isValid()) {
-            mBpfCoordinator.tetherOffloadClientAdd(this, clientInfo);
-        } else {
-            mBpfCoordinator.tetherOffloadClientRemove(this, clientInfo);
-        }
-    }
-
-    private void handleNeighborEvent(NeighborEvent e) {
-        if (mInterfaceParams != null
-                && mInterfaceParams.index == e.ifindex
-                && mInterfaceParams.hasMacAddress) {
-            addOrRemoveIpv6Downstream(e);
-            updateClientInfoIpv4(e);
-        }
-    }
-
     private byte getHopLimit(String upstreamIface, int adjustTTL) {
         try {
             int upstreamHopLimit = Integer.parseUnsignedInt(
@@ -1069,7 +984,6 @@
         switch (what) {
             // Suppress some CMD_* to avoid log flooding.
             case CMD_IPV6_TETHER_UPDATE:
-            case CMD_NEIGHBOR_EVENT:
                 break;
             default:
                 mLog.log(state.getName() + " got "
@@ -1141,14 +1055,6 @@
         }
     }
 
-    private void startConntrackMonitoring() {
-        mBpfCoordinator.startMonitoring(this);
-    }
-
-    private void stopConntrackMonitoring() {
-        mBpfCoordinator.stopMonitoring(this);
-    }
-
     abstract class BaseServingState extends State {
         private final int mDesiredInterfaceState;
 
@@ -1158,7 +1064,7 @@
 
         @Override
         public void enter() {
-            startConntrackMonitoring();
+            mBpfCoordinator.addIpServer(IpServer.this);
 
             startServingInterface();
 
@@ -1226,7 +1132,7 @@
             }
 
             stopIPv4();
-            stopConntrackMonitoring();
+            mBpfCoordinator.removeIpServer(IpServer.this);
 
             resetLinkProperties();
 
@@ -1397,8 +1303,8 @@
 
             for (String ifname : mUpstreamIfaceSet.ifnames) cleanupUpstreamInterface(ifname);
             mUpstreamIfaceSet = null;
-            mBpfCoordinator.updateAllIpv6Rules(
-                    IpServer.this, IpServer.this.mInterfaceParams, NO_UPSTREAM, Set.of());
+            mBpfCoordinator.updateIpv6UpstreamInterface(IpServer.this, NO_UPSTREAM,
+                    Collections.emptySet());
         }
 
         private void cleanupUpstreamInterface(String upstreamIface) {
@@ -1473,9 +1379,6 @@
                         }
                     }
                     break;
-                case CMD_NEIGHBOR_EVENT:
-                    handleNeighborEvent((NeighborEvent) message.obj);
-                    break;
                 default:
                     return false;
             }
@@ -1515,9 +1418,6 @@
     class UnavailableState extends State {
         @Override
         public void enter() {
-            // TODO: move mIpNeighborMonitor.stop() to TetheredState#exit, and trigger a neighbours
-            //       dump after starting mIpNeighborMonitor.
-            mIpNeighborMonitor.stop();
             mLastError = TETHER_ERROR_NO_ERROR;
             sendInterfaceState(STATE_UNAVAILABLE);
         }
diff --git a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
index 81e18ab..5c853f4 100644
--- a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
+++ b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
@@ -69,7 +69,6 @@
 import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.NetworkStackConstants;
 import com.android.net.module.util.SharedLog;
-import com.android.net.module.util.Struct;
 import com.android.net.module.util.Struct.S32;
 import com.android.net.module.util.bpf.Tether4Key;
 import com.android.net.module.util.bpf.Tether4Value;
@@ -77,6 +76,9 @@
 import com.android.net.module.util.bpf.TetherStatsValue;
 import com.android.net.module.util.ip.ConntrackMonitor;
 import com.android.net.module.util.ip.ConntrackMonitor.ConntrackEventConsumer;
+import com.android.net.module.util.ip.IpNeighborMonitor;
+import com.android.net.module.util.ip.IpNeighborMonitor.NeighborEvent;
+import com.android.net.module.util.ip.IpNeighborMonitor.NeighborEventConsumer;
 import com.android.net.module.util.netlink.ConntrackMessage;
 import com.android.net.module.util.netlink.NetlinkConstants;
 import com.android.net.module.util.netlink.NetlinkUtils;
@@ -182,6 +184,10 @@
     private final BpfCoordinatorShim mBpfCoordinatorShim;
     @NonNull
     private final BpfConntrackEventConsumer mBpfConntrackEventConsumer;
+    @NonNull
+    private final IpNeighborMonitor mIpNeighborMonitor;
+    @NonNull
+    private final BpfNeighborEventConsumer mBpfNeighborEventConsumer;
 
     // True if BPF offload is supported, false otherwise. The BPF offload could be disabled by
     // a runtime resource overlay package or device configuration. This flag is only initialized
@@ -190,14 +196,6 @@
     // to make it simpler. See also TetheringConfiguration.
     private final boolean mIsBpfEnabled;
 
-    // Tracks whether BPF tethering is started or not. This is set by tethering before it
-    // starts the first IpServer and is cleared by tethering shortly before the last IpServer
-    // is stopped. Note that rule updates (especially deletions, but sometimes additions as
-    // well) may arrive when this is false. If they do, they must be communicated to netd.
-    // Changes in data limits may also arrive when this is false, and if they do, they must
-    // also be communicated to netd.
-    private boolean mPollingStarted = false;
-
     // Tracking remaining alert quota. Unlike limit quota is subject to interface, the alert
     // quota is interface independent and global for tether offload.
     private long mRemainingAlertQuota = QUOTA_UNLIMITED;
@@ -280,9 +278,6 @@
     private final HashMap<IpServer, HashMap<Inet4Address, ClientInfo>>
             mTetherClients = new HashMap<>();
 
-    // Set for which downstream is monitoring the conntrack netlink message.
-    private final Set<IpServer> mMonitoringIpServers = new HashSet<>();
-
     // Map of upstream interface IPv4 address to interface index.
     // TODO: consider making the key to be unique because the upstream address is not unique. It
     // is okay for now because there have only one upstream generally.
@@ -304,16 +299,19 @@
     @Nullable
     private UpstreamInfo mIpv4UpstreamInfo = null;
 
+    // The IpServers that are currently served by BpfCoordinator.
+    private final ArraySet<IpServer> mServedIpServers = new ArraySet<>();
+
     // Runnable that used by scheduling next polling of stats.
     private final Runnable mScheduledPollingStats = () -> {
         updateForwardedStats();
-        maybeSchedulePollingStats();
+        schedulePollingStats();
     };
 
     // Runnable that used by scheduling next refreshing of conntrack timeout.
     private final Runnable mScheduledConntrackTimeoutUpdate = () -> {
         refreshAllConntrackTimeouts();
-        maybeScheduleConntrackTimeoutUpdate();
+        scheduleConntrackTimeoutUpdate();
     };
 
     // TODO: add BpfMap<TetherDownstream64Key, TetherDownstream64Value> retrieving function.
@@ -339,6 +337,11 @@
             return new ConntrackMonitor(getHandler(), getSharedLog(), consumer);
         }
 
+        /** Get ip neighbor monitor */
+        @NonNull public IpNeighborMonitor getIpNeighborMonitor(NeighborEventConsumer consumer) {
+            return new IpNeighborMonitor(getHandler(), getSharedLog(), consumer);
+        }
+
         /** Get interface information for a given interface. */
         @NonNull public InterfaceParams getInterfaceParams(String ifName) {
             return InterfaceParams.getByName(ifName);
@@ -486,6 +489,9 @@
         mBpfConntrackEventConsumer = new BpfConntrackEventConsumer();
         mConntrackMonitor = mDeps.getConntrackMonitor(mBpfConntrackEventConsumer);
 
+        mBpfNeighborEventConsumer = new BpfNeighborEventConsumer();
+        mIpNeighborMonitor = mDeps.getIpNeighborMonitor(mBpfNeighborEventConsumer);
+
         BpfTetherStatsProvider provider = new BpfTetherStatsProvider();
         try {
             mDeps.getNetworkStatsManager().registerNetworkStatsProvider(
@@ -505,37 +511,25 @@
     }
 
     /**
-     * Start BPF tethering offload stats polling when the first upstream is started.
+     * Start BPF tethering offload stats and conntrack timeout polling.
      * Note that this can be only called on handler thread.
-     * TODO: Perhaps check BPF support before starting.
-     * TODO: Start the stats polling only if there is any client on the downstream.
      */
-    public void startPolling() {
-        if (mPollingStarted) return;
+    private void startStatsAndConntrackTimeoutPolling() {
+        schedulePollingStats();
+        scheduleConntrackTimeoutUpdate();
 
-        if (!isUsingBpf()) {
-            mLog.i("BPF is not using");
-            return;
-        }
-
-        mPollingStarted = true;
-        maybeSchedulePollingStats();
-        maybeScheduleConntrackTimeoutUpdate();
-
-        mLog.i("Polling started");
+        mLog.i("Polling started.");
     }
 
     /**
-     * Stop BPF tethering offload stats polling.
+     * Stop BPF tethering offload stats and conntrack timeout polling.
      * The data limit cleanup and the tether stats maps cleanup are not implemented here.
      * These cleanups rely on all IpServers calling #removeIpv6DownstreamRule. After the
      * last rule is removed from the upstream, #removeIpv6DownstreamRule does the cleanup
      * functionality.
      * Note that this can be only called on handler thread.
      */
-    public void stopPolling() {
-        if (!mPollingStarted) return;
-
+    private void stopStatsAndConntrackTimeoutPolling() {
         // Stop scheduled polling conntrack timeout.
         if (mHandler.hasCallbacks(mScheduledConntrackTimeoutUpdate)) {
             mHandler.removeCallbacks(mScheduledConntrackTimeoutUpdate);
@@ -545,9 +539,8 @@
             mHandler.removeCallbacks(mScheduledPollingStats);
         }
         updateForwardedStats();
-        mPollingStarted = false;
 
-        mLog.i("Polling stopped");
+        mLog.i("Polling stopped.");
     }
 
     /**
@@ -568,7 +561,6 @@
 
     /**
      * Start conntrack message monitoring.
-     * Note that this can be only called on handler thread.
      *
      * TODO: figure out a better logging for non-interesting conntrack message.
      * For example, the following logging is an IPCTNL_MSG_CT_GET message but looks scary.
@@ -588,45 +580,23 @@
      * +------------------+--------------------------------------------------------+
      * See NetlinkMonitor#handlePacket, NetlinkMessage#parseNfMessage.
      */
-    public void startMonitoring(@NonNull final IpServer ipServer) {
+    private void startConntrackMonitoring() {
         // TODO: Wrap conntrackMonitor starting function into mBpfCoordinatorShim.
-        if (!isUsingBpf() || !mDeps.isAtLeastS()) return;
+        if (!mDeps.isAtLeastS()) return;
 
-        if (mMonitoringIpServers.contains(ipServer)) {
-            Log.wtf(TAG, "The same downstream " + ipServer.interfaceName()
-                    + " should not start monitoring twice.");
-            return;
-        }
-
-        if (mMonitoringIpServers.isEmpty()) {
-            mConntrackMonitor.start();
-            mLog.i("Monitoring started");
-        }
-
-        mMonitoringIpServers.add(ipServer);
+        mConntrackMonitor.start();
+        mLog.i("Conntrack monitoring started.");
     }
 
     /**
      * Stop conntrack event monitoring.
-     * Note that this can be only called on handler thread.
      */
-    public void stopMonitoring(@NonNull final IpServer ipServer) {
+    private void stopConntrackMonitoring() {
         // TODO: Wrap conntrackMonitor stopping function into mBpfCoordinatorShim.
-        if (!isUsingBpf() || !mDeps.isAtLeastS()) return;
-
-        // Ignore stopping monitoring if the monitor has never started for a given IpServer.
-        if (!mMonitoringIpServers.contains(ipServer)) {
-            mLog.e("Ignore stopping monitoring because monitoring has never started for "
-                    + ipServer.interfaceName());
-            return;
-        }
-
-        mMonitoringIpServers.remove(ipServer);
-
-        if (!mMonitoringIpServers.isEmpty()) return;
+        if (!mDeps.isAtLeastS()) return;
 
         mConntrackMonitor.stop();
-        mLog.i("Monitoring stopped");
+        mLog.i("Conntrack monitoring stopped.");
     }
 
     /**
@@ -689,9 +659,8 @@
 
     /**
      * Add IPv6 downstream rule.
-     * Note that this can be only called on handler thread.
      */
-    public void addIpv6DownstreamRule(
+    private void addIpv6DownstreamRule(
             @NonNull final IpServer ipServer, @NonNull final Ipv6DownstreamRule rule) {
         if (!isUsingBpf()) return;
 
@@ -707,9 +676,8 @@
 
     /**
      * Remove IPv6 downstream rule.
-     * Note that this can be only called on handler thread.
      */
-    public void removeIpv6DownstreamRule(
+    private void removeIpv6DownstreamRule(
             @NonNull final IpServer ipServer, @NonNull final Ipv6DownstreamRule rule) {
         if (!isUsingBpf()) return;
 
@@ -763,9 +731,8 @@
     /**
      * Delete all upstream and downstream rules for the passed-in IpServer, and if the new upstream
      * is nonzero, reapply them to the new upstream.
-     * Note that this can be only called on handler thread.
      */
-    public void updateAllIpv6Rules(@NonNull final IpServer ipServer,
+    private void updateAllIpv6Rules(@NonNull final IpServer ipServer,
             final InterfaceParams interfaceParams, int newUpstreamIfindex,
             @NonNull final Set<IpPrefix> newUpstreamPrefixes) {
         if (!isUsingBpf()) return;
@@ -887,6 +854,141 @@
     }
 
     /**
+     * Register an IpServer (downstream).
+     * Note that this can be only called on handler thread.
+     */
+    public void addIpServer(@NonNull final IpServer ipServer) {
+        if (!isUsingBpf()) return;
+        if (mServedIpServers.contains(ipServer)) {
+            Log.wtf(TAG, "The same downstream " + ipServer.interfaceName()
+                    + " should not add twice.");
+            return;
+        }
+
+        // Start monitoring and polling when the first IpServer is added.
+        if (mServedIpServers.isEmpty()) {
+            startStatsAndConntrackTimeoutPolling();
+            startConntrackMonitoring();
+            mIpNeighborMonitor.start();
+            mLog.i("Neighbor monitoring started.");
+        }
+        mServedIpServers.add(ipServer);
+    }
+
+    /**
+     * Unregister an IpServer (downstream).
+     * Note that this can be only called on handler thread.
+     */
+    public void removeIpServer(@NonNull final IpServer ipServer) {
+        if (!isUsingBpf()) return;
+        if (!mServedIpServers.contains(ipServer)) {
+            mLog.e("Ignore removing because IpServer has never started for "
+                    + ipServer.interfaceName());
+            return;
+        }
+        mServedIpServers.remove(ipServer);
+
+        // Stop monitoring and polling when the last IpServer is removed.
+        if (mServedIpServers.isEmpty()) {
+            stopStatsAndConntrackTimeoutPolling();
+            stopConntrackMonitoring();
+            mIpNeighborMonitor.stop();
+            mLog.i("Neighbor monitoring stopped.");
+        }
+    }
+
+    /**
+     * Update upstream interface and its prefixes.
+     * Note that this can be only called on handler thread.
+     */
+    public void updateIpv6UpstreamInterface(@NonNull final IpServer ipServer, int upstreamIfindex,
+            @NonNull Set<IpPrefix> upstreamPrefixes) {
+        if (!isUsingBpf()) return;
+
+        // If the upstream interface has changed, remove all rules and re-add them with the new
+        // upstream interface. If upstream is a virtual network, treated as no upstream.
+        final int prevUpstreamIfindex = ipServer.getIpv6UpstreamIfindex();
+        final InterfaceParams interfaceParams = ipServer.getInterfaceParams();
+        final Set<IpPrefix> prevUpstreamPrefixes = ipServer.getIpv6UpstreamPrefixes();
+        if (prevUpstreamIfindex != upstreamIfindex
+                || !prevUpstreamPrefixes.equals(upstreamPrefixes)) {
+            final boolean upstreamSupportsBpf = checkUpstreamSupportsBpf(upstreamIfindex);
+            updateAllIpv6Rules(ipServer, interfaceParams,
+                    getInterfaceIndexForRule(upstreamIfindex, upstreamSupportsBpf),
+                    upstreamPrefixes);
+        }
+    }
+
+    private boolean checkUpstreamSupportsBpf(int upstreamIfindex) {
+        final String iface = mInterfaceNames.get(upstreamIfindex);
+        return iface != null && !isVcnInterface(iface);
+    }
+
+    private int getInterfaceIndexForRule(int ifindex, boolean supportsBpf) {
+        return supportsBpf ? ifindex : NO_UPSTREAM;
+    }
+
+    // Handles updates to IPv6 downstream rules if a neighbor event is received.
+    private void addOrRemoveIpv6Downstream(@NonNull IpServer ipServer, NeighborEvent e) {
+        // mInterfaceParams must be non-null or the event would not have arrived.
+        if (e == null) return;
+        if (!(e.ip instanceof Inet6Address) || e.ip.isMulticastAddress()
+                || e.ip.isLoopbackAddress() || e.ip.isLinkLocalAddress()) {
+            return;
+        }
+
+        // When deleting rules, we still need to pass a non-null MAC, even though it's ignored.
+        // Do this here instead of in the Ipv6DownstreamRule constructor to ensure that we
+        // never add rules with a null MAC, only delete them.
+        final InterfaceParams interfaceParams = ipServer.getInterfaceParams();
+        if (interfaceParams == null || interfaceParams.macAddr == null) return;
+        final int lastIpv6UpstreamIfindex = ipServer.getIpv6UpstreamIfindex();
+        final boolean isUpstreamSupportsBpf = checkUpstreamSupportsBpf(lastIpv6UpstreamIfindex);
+        MacAddress dstMac = e.isValid() ? e.macAddr : NULL_MAC_ADDRESS;
+        Ipv6DownstreamRule rule = new Ipv6DownstreamRule(
+                getInterfaceIndexForRule(lastIpv6UpstreamIfindex, isUpstreamSupportsBpf),
+                interfaceParams.index, (Inet6Address) e.ip, interfaceParams.macAddr, dstMac);
+        if (e.isValid()) {
+            addIpv6DownstreamRule(ipServer, rule);
+        } else {
+            removeIpv6DownstreamRule(ipServer, rule);
+        }
+    }
+
+    private void updateClientInfoIpv4(@NonNull IpServer ipServer, NeighborEvent e) {
+        if (e == null) return;
+        if (!(e.ip instanceof Inet4Address) || e.ip.isMulticastAddress()
+                || e.ip.isLoopbackAddress() || e.ip.isLinkLocalAddress()) {
+            return;
+        }
+
+        InterfaceParams interfaceParams = ipServer.getInterfaceParams();
+        if (interfaceParams == null) return;
+
+        // When deleting clients, IpServer still need to pass a non-null MAC, even though it's
+        // ignored. Do this here instead of in the ClientInfo constructor to ensure that
+        // IpServer never add clients with a null MAC, only delete them.
+        final MacAddress clientMac = e.isValid() ? e.macAddr : NULL_MAC_ADDRESS;
+        final ClientInfo clientInfo = new ClientInfo(interfaceParams.index,
+                interfaceParams.macAddr, (Inet4Address) e.ip, clientMac);
+        if (e.isValid()) {
+            tetherOffloadClientAdd(ipServer, clientInfo);
+        } else {
+            tetherOffloadClientRemove(ipServer, clientInfo);
+        }
+    }
+
+    private void handleNeighborEvent(@NonNull IpServer ipServer, NeighborEvent e) {
+        InterfaceParams interfaceParams = ipServer.getInterfaceParams();
+        if (interfaceParams != null
+                && interfaceParams.index == e.ifindex
+                && interfaceParams.hasMacAddress) {
+            addOrRemoveIpv6Downstream(ipServer, e);
+            updateClientInfoIpv4(ipServer, e);
+        }
+    }
+
+    /**
      * Clear all forwarding IPv4 rules for a given client.
      * Note that this can be only called on handler thread.
      */
@@ -1137,7 +1239,7 @@
         // Note that EthernetTetheringTest#isTetherConfigBpfOffloadEnabled relies on
         // "mIsBpfEnabled" to check tethering config via dumpsys. Beware of the change if any.
         pw.println("mIsBpfEnabled: " + mIsBpfEnabled);
-        pw.println("Polling " + (mPollingStarted ? "started" : "not started"));
+        pw.println("Polling " + (mServedIpServers.isEmpty() ? "not started" : "started"));
         pw.println("Stats provider " + (mStatsProvider != null
                 ? "registered" : "not registered"));
         pw.println("Upstream quota: " + mInterfaceQuotas.toString());
@@ -1343,19 +1445,6 @@
         pw.decreaseIndent();
     }
 
-    private <K extends Struct, V extends Struct> void dumpRawMap(IBpfMap<K, V> map,
-            IndentingPrintWriter pw) throws ErrnoException {
-        if (map == null) {
-            pw.println("No BPF support");
-            return;
-        }
-        if (map.isEmpty()) {
-            pw.println("No entries");
-            return;
-        }
-        map.forEach((k, v) -> pw.println(BpfDump.toBase64EncodedString(k, v)));
-    }
-
     /**
      * Dump raw BPF map into the base64 encoded strings "<base64 key>,<base64 value>".
      * Allow to dump only one map path once. For test only.
@@ -1375,16 +1464,16 @@
         // TODO: dump downstream4 map.
         if (CollectionUtils.contains(args, DUMPSYS_RAWMAP_ARG_STATS)) {
             try (IBpfMap<TetherStatsKey, TetherStatsValue> statsMap = mDeps.getBpfStatsMap()) {
-                dumpRawMap(statsMap, pw);
-            } catch (ErrnoException | IOException e) {
+                BpfDump.dumpRawMap(statsMap, pw);
+            } catch (IOException e) {
                 pw.println("Error dumping stats map: " + e);
             }
             return;
         }
         if (CollectionUtils.contains(args, DUMPSYS_RAWMAP_ARG_UPSTREAM4)) {
             try (IBpfMap<Tether4Key, Tether4Value> upstreamMap = mDeps.getBpfUpstream4Map()) {
-                dumpRawMap(upstreamMap, pw);
-            } catch (ErrnoException | IOException e) {
+                BpfDump.dumpRawMap(upstreamMap, pw);
+            } catch (IOException e) {
                 pw.println("Error dumping IPv4 map: " + e);
             }
             return;
@@ -2052,6 +2141,15 @@
         }
     }
 
+    @VisibleForTesting
+    private class BpfNeighborEventConsumer implements NeighborEventConsumer {
+        public void accept(NeighborEvent e) {
+            for (IpServer ipServer : mServedIpServers) {
+                handleNeighborEvent(ipServer, e);
+            }
+        }
+    }
+
     private boolean isBpfEnabled() {
         final TetheringConfiguration config = mDeps.getTetherConfig();
         return (config != null) ? config.isBpfOffloadEnabled() : true /* default value */;
@@ -2379,9 +2477,7 @@
         });
     }
 
-    private void maybeSchedulePollingStats() {
-        if (!mPollingStarted) return;
-
+    private void schedulePollingStats() {
         if (mHandler.hasCallbacks(mScheduledPollingStats)) {
             mHandler.removeCallbacks(mScheduledPollingStats);
         }
@@ -2389,9 +2485,7 @@
         mHandler.postDelayed(mScheduledPollingStats, getPollingInterval());
     }
 
-    private void maybeScheduleConntrackTimeoutUpdate() {
-        if (!mPollingStarted) return;
-
+    private void scheduleConntrackTimeoutUpdate() {
         if (mHandler.hasCallbacks(mScheduledConntrackTimeoutUpdate)) {
             mHandler.removeCallbacks(mScheduledConntrackTimeoutUpdate);
         }
diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index 873961a..0ff89d3 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -38,6 +38,7 @@
 import static android.net.TetheringManager.TETHERING_INVALID;
 import static android.net.TetheringManager.TETHERING_NCM;
 import static android.net.TetheringManager.TETHERING_USB;
+import static android.net.TetheringManager.TETHERING_VIRTUAL;
 import static android.net.TetheringManager.TETHERING_WIFI;
 import static android.net.TetheringManager.TETHERING_WIFI_P2P;
 import static android.net.TetheringManager.TETHERING_WIGIG;
@@ -173,8 +174,8 @@
 public class Tethering {
 
     private static final String TAG = Tethering.class.getSimpleName();
-    private static final boolean DBG = false;
-    private static final boolean VDBG = false;
+    private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+    private static final boolean VDBG = Log.isLoggable(TAG, Log.VERBOSE);
 
     private static final Class[] sMessageClasses = {
             Tethering.class, TetherMainSM.class, IpServer.class
@@ -241,9 +242,6 @@
     private final TetherMainSM mTetherMainSM;
     private final OffloadController mOffloadController;
     private final UpstreamNetworkMonitor mUpstreamNetworkMonitor;
-    // TODO: Figure out how to merge this and other downstream-tracking objects
-    // into a single coherent structure.
-    private final HashSet<IpServer> mForwardedDownstreams;
     private final VersionedBroadcastListener mCarrierConfigChange;
     private final TetheringDependencies mDeps;
     private final EntitlementManager mEntitlementMgr;
@@ -271,8 +269,6 @@
 
     private boolean mRndisEnabled;       // track the RNDIS function enabled state
     private boolean mNcmEnabled;         // track the NCM function enabled state
-    // True iff. WiFi tethering should be started when soft AP is ready.
-    private boolean mWifiTetherRequested;
     private Network mTetherUpstream;
     private TetherStatesParcel mTetherStatesParcel;
     private boolean mDataSaverEnabled = false;
@@ -283,6 +279,7 @@
     private TetheredInterfaceRequestShim mBluetoothIfaceRequest;
     private String mConfiguredEthernetIface;
     private String mConfiguredBluetoothIface;
+    private String mConfiguredVirtualIface;
     private EthernetCallback mEthernetCallback;
     private TetheredInterfaceCallbackShim mBluetoothCallback;
     private SettingsObserver mSettingsObserver;
@@ -329,7 +326,6 @@
                 (what, obj) -> {
                     mTetherMainSM.sendMessage(TetherMainSM.EVENT_UPSTREAM_CALLBACK, what, 0, obj);
                 });
-        mForwardedDownstreams = new HashSet<>();
 
         IntentFilter filter = new IntentFilter();
         filter.addAction(ACTION_CARRIER_CONFIG_CHANGED);
@@ -725,6 +721,9 @@
             case TETHERING_ETHERNET:
                 result = setEthernetTethering(enable);
                 break;
+            case TETHERING_VIRTUAL:
+                result = setVirtualMachineTethering(enable);
+                break;
             default:
                 Log.w(TAG, "Invalid tether type.");
                 result = TETHER_ERROR_UNKNOWN_TYPE;
@@ -763,7 +762,6 @@
             }
             if ((enable && mgr.startTetheredHotspot(null /* use existing softap config */))
                     || (!enable && mgr.stopSoftAp())) {
-                mWifiTetherRequested = enable;
                 return TETHER_ERROR_NO_ERROR;
             }
         } finally {
@@ -979,6 +977,21 @@
         }
     }
 
+    private int setVirtualMachineTethering(final boolean enable) {
+        // TODO(340377643): Use bridge ifname when it's introduced, not fixed TAP ifname.
+        if (enable) {
+            mConfiguredVirtualIface = "avf_tap_fixed";
+            enableIpServing(
+                    TETHERING_VIRTUAL,
+                    mConfiguredVirtualIface,
+                    getRequestedState(TETHERING_VIRTUAL));
+        } else if (mConfiguredVirtualIface != null) {
+            ensureIpServerStopped(mConfiguredVirtualIface);
+            mConfiguredVirtualIface = null;
+        }
+        return TETHER_ERROR_NO_ERROR;
+    }
+
     void tether(String iface, int requestedState, final IIntResultListener listener) {
         mHandler.post(() -> {
             try {
@@ -1470,10 +1483,6 @@
     }
 
     private void disableWifiIpServing(String ifname, int apState) {
-        // Regardless of whether we requested this transition, the AP has gone
-        // down.  Don't try to tether again unless we're requested to do so.
-        mWifiTetherRequested = false;
-
         mLog.log("Canceling WiFi tethering request - interface=" + ifname + " state=" + apState);
 
         disableWifiIpServingCommon(TETHERING_WIFI, ifname);
@@ -1505,8 +1514,7 @@
     private void enableWifiIpServing(String ifname, int wifiIpMode) {
         mLog.log("request WiFi tethering - interface=" + ifname + " state=" + wifiIpMode);
 
-        // Map wifiIpMode values to IpServer.Callback serving states, inferring
-        // from mWifiTetherRequested as a final "best guess".
+        // Map wifiIpMode values to IpServer.Callback serving states.
         final int ipServingMode;
         switch (wifiIpMode) {
             case IFACE_IP_MODE_TETHERED:
@@ -1653,11 +1661,6 @@
         mLog.log(state.getName() + " got " + sMagicDecoderRing.get(what, Integer.toString(what)));
     }
 
-    private boolean upstreamWanted() {
-        if (!mForwardedDownstreams.isEmpty()) return true;
-        return mWifiTetherRequested;
-    }
-
     // Needed because the canonical source of upstream truth is just the
     // upstream interface set, |mCurrentUpstreamIfaceSet|.
     private boolean pertainsToCurrentUpstream(UpstreamNetworkState ns) {
@@ -1715,12 +1718,16 @@
         private final ArrayList<IpServer> mNotifyList;
         private final IPv6TetheringCoordinator mIPv6TetheringCoordinator;
         private final OffloadWrapper mOffload;
+        // TODO: Figure out how to merge this and other downstream-tracking objects
+        // into a single coherent structure.
+        private final HashSet<IpServer> mForwardedDownstreams;
 
         private static final int UPSTREAM_SETTLE_TIME_MS     = 10000;
 
         TetherMainSM(String name, Looper looper, TetheringDependencies deps) {
             super(name, looper);
 
+            mForwardedDownstreams = new HashSet<>();
             mInitialState = new InitialState();
             mTetherModeAliveState = new TetherModeAliveState();
             mSetIpForwardingEnabledErrorState = new SetIpForwardingEnabledErrorState();
@@ -2056,6 +2063,10 @@
             }
         }
 
+        private boolean upstreamWanted() {
+            return !mForwardedDownstreams.isEmpty();
+        }
+
         class TetherModeAliveState extends State {
             boolean mUpstreamWanted = false;
             boolean mTryCell = true;
@@ -2078,9 +2089,6 @@
                     chooseUpstreamType(true);
                     mTryCell = false;
                 }
-
-                // TODO: Check the upstream interface if it is managed by BPF offload.
-                mBpfCoordinator.startPolling();
             }
 
             @Override
@@ -2094,7 +2102,6 @@
                     reportUpstreamChanged(null);
                     mNotificationUpdater.onUpstreamCapabilitiesChanged(null);
                 }
-                mBpfCoordinator.stopPolling();
                 mTetheringMetrics.cleanup();
             }
 
@@ -2393,6 +2400,9 @@
                 hasCallingPermission(NETWORK_SETTINGS)
                         || hasCallingPermission(PERMISSION_MAINLINE_NETWORK_STACK)
                         || hasCallingPermission(NETWORK_STACK);
+        if (callback == null) {
+            throw new NullPointerException();
+        }
         mHandler.post(() -> {
             mTetheringEventCallbacks.register(callback, new CallbackCookie(hasListPermission));
             final TetheringCallbackStartedParcel parcel = new TetheringCallbackStartedParcel();
@@ -2651,7 +2661,7 @@
             }
             pw.println(" - lastError = " + tetherState.lastError);
         }
-        pw.println("Upstream wanted: " + upstreamWanted());
+        pw.println("Upstream wanted: " + mTetherMainSM.upstreamWanted());
         pw.println("Current upstream interface(s): " + mCurrentUpstreamIfaceSet);
         pw.decreaseIndent();
 
diff --git a/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java b/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
index 9dfd225..3f86056 100644
--- a/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
+++ b/Tethering/src/com/android/networkstack/tethering/TetheringDependencies.java
@@ -156,6 +156,7 @@
     /**
      * Get a reference to BluetoothAdapter to be used by tethering.
      */
+    @Nullable
     public abstract BluetoothAdapter getBluetoothAdapter();
 
     /**
diff --git a/Tethering/src/com/android/networkstack/tethering/TetheringService.java b/Tethering/src/com/android/networkstack/tethering/TetheringService.java
index aa73819..623f502 100644
--- a/Tethering/src/com/android/networkstack/tethering/TetheringService.java
+++ b/Tethering/src/com/android/networkstack/tethering/TetheringService.java
@@ -30,6 +30,7 @@
 
 import android.app.Service;
 import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothManager;
 import android.content.Context;
 import android.content.Intent;
 import android.net.IIntResultListener;
@@ -377,7 +378,11 @@
 
             @Override
             public BluetoothAdapter getBluetoothAdapter() {
-                return BluetoothAdapter.getDefaultAdapter();
+                final BluetoothManager btManager = getSystemService(BluetoothManager.class);
+                if (btManager == null) {
+                    return null;
+                }
+                return btManager.getAdapter();
             }
         };
     }
diff --git a/Tethering/src/com/android/networkstack/tethering/util/StateMachineShim.java b/Tethering/src/com/android/networkstack/tethering/util/StateMachineShim.java
index 078a35f..c236188 100644
--- a/Tethering/src/com/android/networkstack/tethering/util/StateMachineShim.java
+++ b/Tethering/src/com/android/networkstack/tethering/util/StateMachineShim.java
@@ -22,7 +22,8 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
-import com.android.networkstack.tethering.util.SyncStateMachine.StateInfo;
+import com.android.net.module.util.SyncStateMachine;
+import com.android.net.module.util.SyncStateMachine.StateInfo;
 
 import java.util.List;
 
diff --git a/Tethering/tests/integration/Android.bp b/Tethering/tests/integration/Android.bp
index 07fa733..337d408 100644
--- a/Tethering/tests/integration/Android.bp
+++ b/Tethering/tests/integration/Android.bp
@@ -33,6 +33,7 @@
         "net-tests-utils",
         "net-utils-device-common",
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
         "testables",
         "connectivity-net-module-utils-bpf",
     ],
diff --git a/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java b/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
index 2933a44..3944a8a 100644
--- a/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
+++ b/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
@@ -16,7 +16,6 @@
 
 package android.net;
 
-import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
 import static android.Manifest.permission.MANAGE_TEST_NETWORKS;
 import static android.Manifest.permission.NETWORK_SETTINGS;
 import static android.Manifest.permission.TETHER_PRIVILEGED;
@@ -42,7 +41,6 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 import static org.junit.Assume.assumeFalse;
@@ -65,7 +63,6 @@
 import androidx.annotation.NonNull;
 import androidx.test.platform.app.InstrumentationRegistry;
 
-import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.Struct;
 import com.android.net.module.util.structs.Ipv6Header;
 import com.android.testutils.HandlerUtils;
@@ -74,7 +71,6 @@
 
 import org.junit.After;
 import org.junit.Before;
-import org.junit.BeforeClass;
 
 import java.io.FileDescriptor;
 import java.net.Inet4Address;
@@ -83,8 +79,10 @@
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.nio.ByteBuffer;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
@@ -104,7 +102,7 @@
     // Used to check if any tethering interface is available. Choose 200ms to be request timeout
     // because the average interface requested time on cuttlefish@acloud is around 10ms.
     // See TetheredInterfaceRequester.getInterface, isInterfaceForTetheringAvailable.
-    private static final int AVAILABLE_TETHER_IFACE_REQUEST_TIMEOUT_MS = 200;
+    private static final int SHORT_TIMEOUT_MS = 1000;
     private static final int TETHER_REACHABILITY_ATTEMPTS = 20;
     protected static final long WAIT_RA_TIMEOUT_MS = 2000;
 
@@ -142,16 +140,18 @@
 
     private static final Context sContext =
             InstrumentationRegistry.getInstrumentation().getContext();
-    private static final EthernetManager sEm = sContext.getSystemService(EthernetManager.class);
+    protected static final EthernetManager sEm = sContext.getSystemService(EthernetManager.class);
     private static final TetheringManager sTm = sContext.getSystemService(TetheringManager.class);
     private static final PackageManager sPackageManager = sContext.getPackageManager();
     private static final CtsNetUtils sCtsNetUtils = new CtsNetUtils(sContext);
+    private static final List<String> sCallbackErrors =
+            Collections.synchronizedList(new ArrayList<>());
 
     // Late initialization in setUp()
     private boolean mRunTests;
     private HandlerThread mHandlerThread;
     private Handler mHandler;
-    private TetheredInterfaceRequester mTetheredInterfaceRequester;
+    protected TetheredInterfaceRequester mTetheredInterfaceRequester;
 
     // Late initialization in initTetheringTester().
     private TapPacketReader mUpstreamReader;
@@ -164,33 +164,6 @@
         return sContext;
     }
 
-    @BeforeClass
-    public static void setUpOnce() throws Exception {
-        // The first test case may experience tethering restart with IP conflict handling.
-        // Tethering would cache the last upstreams so that the next enabled tethering avoids
-        // picking up the address that is in conflict with the upstreams. To protect subsequent
-        // tests, turn tethering on and off before running them.
-        MyTetheringEventCallback callback = null;
-        TestNetworkInterface testIface = null;
-        try {
-            // If the physical ethernet interface is available, do nothing.
-            if (isInterfaceForTetheringAvailable()) return;
-
-            testIface = createTestInterface();
-            setIncludeTestInterfaces(true);
-
-            callback = enableEthernetTethering(testIface.getInterfaceName(), null);
-            callback.awaitUpstreamChanged(true /* throwTimeoutException */);
-        } catch (TimeoutException e) {
-            Log.d(TAG, "WARNNING " + e);
-        } finally {
-            maybeCloseTestInterface(testIface);
-            maybeUnregisterTetheringEventCallback(callback);
-
-            setIncludeTestInterfaces(false);
-        }
-    }
-
     @Before
     public void setUp() throws Exception {
         mHandlerThread = new HandlerThread(getClass().getSimpleName());
@@ -201,6 +174,7 @@
         assumeTrue(mRunTests);
 
         mTetheredInterfaceRequester = new TetheredInterfaceRequester();
+        sCallbackErrors.clear();
     }
 
     private boolean isEthernetTetheringSupported() throws Exception {
@@ -268,47 +242,37 @@
         maybeUnregisterTetheringEventCallback(mTetheringEventCallback);
         mTetheringEventCallback = null;
 
-        runAsShell(NETWORK_SETTINGS, () -> mTetheredInterfaceRequester.release());
         setIncludeTestInterfaces(false);
     }
 
     @After
     public void tearDown() throws Exception {
+        if (mTetheredInterfaceRequester != null) {
+            mTetheredInterfaceRequester.release();
+        }
         try {
             if (mRunTests) cleanUp();
         } finally {
             mHandlerThread.quitSafely();
             mHandlerThread.join();
         }
+
+        if (sCallbackErrors.size() > 0) {
+            fail("Some callbacks had errors: " + sCallbackErrors);
+        }
     }
 
-    protected static boolean isInterfaceForTetheringAvailable() throws Exception {
-        // Before T, all ethernet interfaces could be used for server mode. Instead of
-        // waiting timeout, just checking whether the system currently has any
-        // ethernet interface is more reliable.
-        if (!SdkLevel.isAtLeastT()) {
-            return runAsShell(CONNECTIVITY_USE_RESTRICTED_NETWORKS, () -> sEm.isAvailable());
-        }
-
+    protected boolean isInterfaceForTetheringAvailable() throws Exception {
         // If previous test case doesn't release tethering interface successfully, the other tests
         // after that test may be skipped as unexcepted.
         // TODO: figure out a better way to check default tethering interface existenion.
-        final TetheredInterfaceRequester requester = new TetheredInterfaceRequester();
-        try {
-            // Use short timeout (200ms) for requesting an existing interface, if any, because
-            // it should reurn faster than requesting a new tethering interface. Using default
-            // timeout (5000ms, TIMEOUT_MS) may make that total testing time is over 1 minute
-            // test module timeout on internal testing.
-            // TODO: if this becomes flaky, consider using default timeout (5000ms) and moving
-            // this check into #setUpOnce.
-            return requester.getInterface(AVAILABLE_TETHER_IFACE_REQUEST_TIMEOUT_MS) != null;
-        } catch (TimeoutException e) {
-            return false;
-        } finally {
-            runAsShell(NETWORK_SETTINGS, () -> {
-                requester.release();
-            });
-        }
+        // Use short timeout (200ms) for requesting an existing interface, if any, because
+        // it should reurn faster than requesting a new tethering interface. Using default
+        // timeout (5000ms, TIMEOUT_MS) may make that total testing time is over 1 minute
+        // test module timeout on internal testing.
+        // TODO: if this becomes flaky, consider using default timeout (5000ms) and moving
+        // this check into #setUpOnce.
+        return mTetheredInterfaceRequester.isPhysicalInterfaceAvailable(SHORT_TIMEOUT_MS);
     }
 
     protected static void setIncludeTestInterfaces(boolean include) {
@@ -323,14 +287,6 @@
         });
     }
 
-    protected String getTetheredInterface() throws Exception {
-        return mTetheredInterfaceRequester.getInterface();
-    }
-
-    protected CompletableFuture<String> requestTetheredInterface() throws Exception {
-        return mTetheredInterfaceRequester.requestInterface();
-    }
-
     protected static void waitForRouterAdvertisement(TapPacketReader reader, String iface,
             long timeoutMs) {
         final long deadline = SystemClock.uptimeMillis() + timeoutMs;
@@ -391,7 +347,7 @@
         }
         @Override
         public void onTetheredInterfacesChanged(List<String> interfaces) {
-            fail("Should only call callback that takes a Set<TetheringInterface>");
+            addCallbackError("Should only call callback that takes a Set<TetheringInterface>");
         }
 
         @Override
@@ -412,7 +368,7 @@
 
         @Override
         public void onLocalOnlyInterfacesChanged(List<String> interfaces) {
-            fail("Should only call callback that takes a Set<TetheringInterface>");
+            addCallbackError("Should only call callback that takes a Set<TetheringInterface>");
         }
 
         @Override
@@ -481,7 +437,7 @@
             // Ignore stale callbacks registered by previous test cases.
             if (mUnregistered) return;
 
-            fail("TetheringEventCallback got error:" + error + " on iface " + ifName);
+            addCallbackError("TetheringEventCallback got error:" + error + " on iface " + ifName);
         }
 
         @Override
@@ -536,6 +492,11 @@
         }
     }
 
+    private static void addCallbackError(String error) {
+        Log.e(TAG, error);
+        sCallbackErrors.add(error);
+    }
+
     protected static MyTetheringEventCallback enableEthernetTethering(String iface,
             TetheringRequest request, Network expectedUpstream) throws Exception {
         // Enable ethernet tethering with null expectedUpstream means the test accept any upstream
@@ -562,7 +523,7 @@
 
             @Override
             public void onTetheringFailed(int resultCode) {
-                fail("Unexpectedly got onTetheringFailed");
+                addCallbackError("Unexpectedly got onTetheringFailed");
             }
         };
         Log.d(TAG, "Starting Ethernet tethering");
@@ -619,6 +580,11 @@
         private TetheredInterfaceRequest mRequest;
         private final CompletableFuture<String> mFuture = new CompletableFuture<>();
 
+        TetheredInterfaceRequester() {
+            mRequest = runAsShell(NETWORK_SETTINGS, () ->
+                    sEm.requestTetheredInterface(c -> c.run() /* executor */, this));
+        }
+
         @Override
         public void onAvailable(String iface) {
             Log.d(TAG, "Ethernet interface available: " + iface);
@@ -630,28 +596,21 @@
             mFuture.completeExceptionally(new IllegalStateException("onUnavailable received"));
         }
 
-        public CompletableFuture<String> requestInterface() {
-            assertNull("BUG: more than one tethered interface request", mRequest);
-            Log.d(TAG, "Requesting tethered interface");
-            mRequest = runAsShell(NETWORK_SETTINGS, () ->
-                    sEm.requestTetheredInterface(c -> c.run() /* executor */, this));
-            return mFuture;
-        }
-
-        public String getInterface(int timeout) throws Exception {
-            return requestInterface().get(timeout, TimeUnit.MILLISECONDS);
+        public boolean isPhysicalInterfaceAvailable(int timeout) {
+            try {
+                final String iface = mFuture.get(timeout, TimeUnit.MILLISECONDS);
+                return !iface.startsWith("testtap");
+            } catch (Exception e) {
+                return false;
+            }
         }
 
         public String getInterface() throws Exception {
-            return getInterface(TIMEOUT_MS);
+            return mFuture.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
         }
 
         public void release() {
-            if (mRequest != null) {
-                mFuture.obtrudeException(new IllegalStateException("Request already released"));
-                mRequest.release();
-                mRequest = null;
-            }
+            runAsShell(NETWORK_SETTINGS, () -> mRequest.release());
         }
     }
 
@@ -672,7 +631,10 @@
         lp.setLinkAddresses(addresses);
         lp.setDnsServers(dnses);
 
-        return runAsShell(MANAGE_TEST_NETWORKS, () -> initTestNetwork(sContext, lp, TIMEOUT_MS));
+        // TODO: initTestNetwork can take up to 15 seconds on a workstation. Investigate when and
+        // why this is the case. It is unclear whether a 30 second timeout is enough when running
+        // these tests in the much slower test infra.
+        return runAsShell(MANAGE_TEST_NETWORKS, () -> initTestNetwork(sContext, lp, 30_000));
     }
 
     protected void sendDownloadPacketUdp(@NonNull final InetAddress srcIp,
diff --git a/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java b/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
index 4949eaa..5c258b2 100644
--- a/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
+++ b/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
@@ -59,6 +59,7 @@
 import com.android.testutils.NetworkStackModuleTest;
 import com.android.testutils.TapPacketReader;
 
+import org.junit.After;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -74,8 +75,6 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.Random;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 @RunWith(AndroidJUnit4.class)
@@ -150,6 +149,16 @@
             (byte) 0x01, (byte) 0x02, (byte) 0x03, (byte) 0x04  /* Address: 1.2.3.4 */
     };
 
+    @After
+    public void tearDown() throws Exception {
+        super.tearDown();
+        // TODO: See b/318121782#comment4. Register an ethernet InterfaceStateListener, and wait for
+        // the callback to report client mode. This happens as soon as both
+        // TetheredInterfaceRequester and the tethering code itself have released the interface,
+        // i.e. after stopTethering() has completed.
+        Thread.sleep(3000);
+    }
+
     @Test
     public void testVirtualEthernetAlreadyExists() throws Exception {
         // This test requires manipulating packets. Skip if there is a physical Ethernet connected.
@@ -171,7 +180,7 @@
             Log.d(TAG, "Including test interfaces");
             setIncludeTestInterfaces(true);
 
-            final String iface = getTetheredInterface();
+            final String iface = mTetheredInterfaceRequester.getInterface();
             assertEquals("TetheredInterfaceCallback for unexpected interface",
                     downstreamIface.getInterfaceName(), iface);
 
@@ -193,8 +202,6 @@
         // This test requires manipulating packets. Skip if there is a physical Ethernet connected.
         assumeFalse(isInterfaceForTetheringAvailable());
 
-        CompletableFuture<String> futureIface = requestTetheredInterface();
-
         setIncludeTestInterfaces(true);
 
         TestNetworkInterface downstreamIface = null;
@@ -204,7 +211,7 @@
         try {
             downstreamIface = createTestInterface();
 
-            final String iface = futureIface.get(TIMEOUT_MS, TimeUnit.MILLISECONDS);
+            final String iface = mTetheredInterfaceRequester.getInterface();
             assertEquals("TetheredInterfaceCallback for unexpected interface",
                     downstreamIface.getInterfaceName(), iface);
 
@@ -234,7 +241,7 @@
         try {
             downstreamIface = createTestInterface();
 
-            final String iface = getTetheredInterface();
+            final String iface = mTetheredInterfaceRequester.getInterface();
             assertEquals("TetheredInterfaceCallback for unexpected interface",
                     downstreamIface.getInterfaceName(), iface);
 
@@ -308,7 +315,7 @@
         try {
             downstreamIface = createTestInterface();
 
-            final String iface = getTetheredInterface();
+            final String iface = mTetheredInterfaceRequester.getInterface();
             assertEquals("TetheredInterfaceCallback for unexpected interface",
                     downstreamIface.getInterfaceName(), iface);
 
@@ -358,7 +365,7 @@
         MyTetheringEventCallback tetheringEventCallback = null;
         try {
             // Get an interface to use.
-            final String iface = getTetheredInterface();
+            final String iface = mTetheredInterfaceRequester.getInterface();
 
             // Enable Ethernet tethering and check that it starts.
             tetheringEventCallback = enableEthernetTethering(iface, null /* any upstream */);
@@ -479,17 +486,23 @@
         // TODO: test BPF offload maps {rule, stats}.
     }
 
-    // Test network topology:
-    //
-    //         public network (rawip)                 private network
-    //                   |                 UE                |
-    // +------------+    V    +------------+------------+    V    +------------+
-    // |   Sever    +---------+  Upstream  | Downstream +---------+   Client   |
-    // +------------+         +------------+------------+         +------------+
-    // remote ip              public ip                           private ip
-    // 8.8.8.8:443            <Upstream ip>:9876                  <TetheredDevice ip>:9876
-    //
-    private void runUdp4Test() throws Exception {
+
+    /**
+     * Basic IPv4 UDP tethering test. Verify that UDP tethered packets are transferred no matter
+     * using which data path.
+     */
+    @Test
+    public void testTetherUdpV4() throws Exception {
+        // Test network topology:
+        //
+        //         public network (rawip)                 private network
+        //                   |                 UE                |
+        // +------------+    V    +------------+------------+    V    +------------+
+        // |   Sever    +---------+  Upstream  | Downstream +---------+   Client   |
+        // +------------+         +------------+------------+         +------------+
+        // remote ip              public ip                           private ip
+        // 8.8.8.8:443            <Upstream ip>:9876                  <TetheredDevice ip>:9876
+        //
         final TetheringTester tester = initTetheringTester(toList(TEST_IP4_ADDR),
                 toList(TEST_IP4_DNS));
         final TetheredDevice tethered = tester.createTetheredDevice(TEST_MAC, false /* hasIpv6 */);
@@ -511,15 +524,6 @@
         sendDownloadPacketUdp(remoteIp, tetheringUpstreamIp, tester, false /* is6To4 */);
     }
 
-    /**
-     * Basic IPv4 UDP tethering test. Verify that UDP tethered packets are transferred no matter
-     * using which data path.
-     */
-    @Test
-    public void testTetherUdpV4() throws Exception {
-        runUdp4Test();
-    }
-
     // Test network topology:
     //
     //            public network (rawip)                 private network
@@ -569,7 +573,7 @@
         final TetheredDevice tethered = tester.createTetheredDevice(TEST_MAC, false /* hasIpv6 */);
 
         // TODO: remove the connectivity verification for upstream connected notification race.
-        // See the same reason in runUdp4Test().
+        // See the same reason in testTetherUdp4().
         probeV4TetheringConnectivity(tester, tethered, false /* is4To6 */);
 
         final ByteBuffer request = buildIcmpEchoPacketV4(tethered.macAddr /* srcMac */,
@@ -677,7 +681,7 @@
         final TetheredDevice tethered = tester.createTetheredDevice(TEST_MAC, false /* hasIpv6 */);
 
         // TODO: remove the connectivity verification for upstream connected notification race.
-        // See the same reason in runUdp4Test().
+        // See the same reason in testTetherUdp4().
         probeV4TetheringConnectivity(tester, tethered, false /* is4To6 */);
 
         // [1] Send DNS query.
@@ -721,7 +725,7 @@
         final TetheredDevice tethered = tester.createTetheredDevice(TEST_MAC, false /* hasIpv6 */);
 
         // TODO: remove the connectivity verification for upstream connected notification race.
-        // See the same reason in runUdp4Test().
+        // See the same reason in testTetherUdp4().
         probeV4TetheringConnectivity(tester, tethered, false /* is4To6 */);
 
         runTcpTest(tethered.macAddr /* uploadSrcMac */, tethered.routerMacAddr /* uploadDstMac */,
diff --git a/Tethering/tests/mts/Android.bp b/Tethering/tests/mts/Android.bp
index a80e49e..c4d5636 100644
--- a/Tethering/tests/mts/Android.bp
+++ b/Tethering/tests/mts/Android.bp
@@ -45,6 +45,7 @@
         "junit-params",
         "connectivity-net-module-utils-bpf",
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
     ],
 
     jni_libs: [
diff --git a/Tethering/tests/privileged/src/com/android/networkstack/tethering/BpfMapTest.java b/Tethering/tests/privileged/src/com/android/networkstack/tethering/BpfMapTest.java
index d5d71bc..47aebe8 100644
--- a/Tethering/tests/privileged/src/com/android/networkstack/tethering/BpfMapTest.java
+++ b/Tethering/tests/privileged/src/com/android/networkstack/tethering/BpfMapTest.java
@@ -22,19 +22,24 @@
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
+import static org.junit.Assume.assumeTrue;
 
 import android.net.MacAddress;
 import android.os.Build;
+import android.os.SystemClock;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.system.OsConstants;
 import android.util.ArrayMap;
 
 import com.android.net.module.util.BpfMap;
+import com.android.net.module.util.SingleWriterBpfMap;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.DevSdkIgnoreRunner;
 
@@ -42,10 +47,18 @@
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
 
 import java.io.File;
 import java.net.InetAddress;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.Collection;
 import java.util.NoSuchElementException;
+import java.util.Random;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
 
@@ -56,11 +69,26 @@
     private static final int TEST_MAP_SIZE = 16;
     private static final String TETHER_DOWNSTREAM6_FS_PATH =
             "/sys/fs/bpf/tethering/map_test_tether_downstream6_map";
+    private static final String TETHER2_DOWNSTREAM6_FS_PATH =
+            "/sys/fs/bpf/tethering/map_test_tether2_downstream6_map";
+    private static final String TETHER3_DOWNSTREAM6_FS_PATH =
+            "/sys/fs/bpf/tethering/map_test_tether3_downstream6_map";
 
     private ArrayMap<TetherDownstream6Key, Tether6Value> mTestData;
 
     private BpfMap<TetherDownstream6Key, Tether6Value> mTestMap;
 
+    private final boolean mShouldTestSingleWriterMap;
+
+    @Parameterized.Parameters
+    public static Collection<Boolean> shouldTestSingleWriterMap() {
+        return Arrays.asList(true, false);
+    }
+
+    public BpfMapTest(boolean shouldTestSingleWriterMap) {
+        mShouldTestSingleWriterMap = shouldTestSingleWriterMap;
+    }
+
     @BeforeClass
     public static void setupOnce() {
         System.loadLibrary(getTetheringJniLibraryName());
@@ -82,11 +110,16 @@
         initTestMap();
     }
 
-    private void initTestMap() throws Exception {
-        mTestMap = new BpfMap<>(
-                TETHER_DOWNSTREAM6_FS_PATH,
-                TetherDownstream6Key.class, Tether6Value.class);
+    private BpfMap<TetherDownstream6Key, Tether6Value> openTestMap() throws Exception {
+        return mShouldTestSingleWriterMap
+                ? SingleWriterBpfMap.getSingleton(TETHER2_DOWNSTREAM6_FS_PATH,
+                        TetherDownstream6Key.class, Tether6Value.class)
+                : new BpfMap<>(TETHER_DOWNSTREAM6_FS_PATH, TetherDownstream6Key.class,
+                        Tether6Value.class);
+    }
 
+    private void initTestMap() throws Exception {
+        mTestMap = openTestMap();
         mTestMap.forEach((key, value) -> {
             try {
                 assertTrue(mTestMap.deleteEntry(key));
@@ -125,7 +158,7 @@
                 assertEquals(OsConstants.EPERM, expected.errno);
             }
         }
-        try (BpfMap writeOnlyMap = new BpfMap<>(TETHER_DOWNSTREAM6_FS_PATH, BpfMap.BPF_F_WRONLY,
+        try (BpfMap writeOnlyMap = new BpfMap<>(TETHER3_DOWNSTREAM6_FS_PATH, BpfMap.BPF_F_WRONLY,
                 TetherDownstream6Key.class, Tether6Value.class)) {
             assertNotNull(writeOnlyMap);
             try {
@@ -357,6 +390,25 @@
     }
 
     @Test
+    public void testMapContentsCorrectOnOpen() throws Exception {
+        final BpfMap<TetherDownstream6Key, Tether6Value> map1, map2;
+
+        map1 = openTestMap();
+        map1.clear();
+        for (int i = 0; i < mTestData.size(); i++) {
+            map1.insertEntry(mTestData.keyAt(i), mTestData.valueAt(i));
+        }
+
+        // We can't close and reopen map1, because close does nothing. Open another map instead.
+        map2 = openTestMap();
+        for (int i = 0; i < mTestData.size(); i++) {
+            assertEquals(mTestData.valueAt(i), map2.getValue(mTestData.keyAt(i)));
+        }
+
+        map1.clear();
+    }
+
+    @Test
     public void testInsertOverflow() throws Exception {
         final ArrayMap<TetherDownstream6Key, Tether6Value> testData =
                 new ArrayMap<>();
@@ -396,8 +448,18 @@
         }
     }
 
-    private static int getNumOpenFds() {
-        return new File("/proc/" + Os.getpid() + "/fd").listFiles().length;
+    private static int getNumOpenBpfMapFds() throws Exception {
+        int numFds = 0;
+        File[] openFiles = new File("/proc/self/fd").listFiles();
+        for (int i = 0; i < openFiles.length; i++) {
+            final Path path = openFiles[i].toPath();
+            if (!Files.isSymbolicLink(path)) continue;
+            if ("anon_inode:bpf-map".equals(Files.readSymbolicLink(path).toString())) {
+                numFds++;
+            }
+        }
+        assertNotEquals("Couldn't find any BPF map fds opened by this process", 0, numFds);
+        return numFds;
     }
 
     @Test
@@ -406,7 +468,7 @@
         // cache, expect that the fd amount is not increased in the iterations.
         // See the comment of BpfMap#close.
         final int iterations = 1000;
-        final int before = getNumOpenFds();
+        final int before = getNumOpenBpfMapFds();
         for (int i = 0; i < iterations; i++) {
             try (BpfMap<TetherDownstream6Key, Tether6Value> map = new BpfMap<>(
                     TETHER_DOWNSTREAM6_FS_PATH,
@@ -414,15 +476,74 @@
                 // do nothing
             }
         }
-        final int after = getNumOpenFds();
+        final int after = getNumOpenBpfMapFds();
 
         // Check that the number of open fds is the same as before.
-        // If this exact match becomes flaky, we probably need to distinguish that fd is belong
-        // to "bpf-map".
-        // ex:
-        // $ adb shell ls -all /proc/16196/fd
-        // [..] network_stack 64 2022-07-26 22:01:02.300002956 +0800 749 -> anon_inode:bpf-map
-        // [..] network_stack 64 2022-07-26 22:01:02.188002956 +0800 75 -> anon_inode:[eventfd]
         assertEquals("Fd leak after " + iterations + " iterations: ", before, after);
     }
+
+    @Test
+    public void testNullKey() {
+        assertThrows(NullPointerException.class, () ->
+                mTestMap.insertOrReplaceEntry(null, mTestData.valueAt(0)));
+    }
+
+    private void runBenchmarkThread(BpfMap<TetherDownstream6Key, Tether6Value> map,
+            CompletableFuture<Integer> future, int runtimeMs) {
+        int numReads = 0;
+        final Random r = new Random();
+        final long start = SystemClock.elapsedRealtime();
+        final long stop = start + runtimeMs;
+        while (SystemClock.elapsedRealtime() < stop) {
+            try {
+                final Tether6Value v = map.getValue(mTestData.keyAt(r.nextInt(mTestData.size())));
+                assertNotNull(v);
+                numReads++;
+            } catch (Exception e) {
+                future.completeExceptionally(e);
+                return;
+            }
+        }
+        future.complete(numReads);
+    }
+
+    @Test
+    public void testSingleWriterCacheEffectiveness() throws Exception {
+        assumeTrue(mShouldTestSingleWriterMap);
+        // Benchmark parameters.
+        final int timeoutMs = 5_000;  // Only hit if threads don't complete.
+        final int benchmarkTimeMs = 2_000;
+        final int minReads = 50;
+        // Local testing on cuttlefish suggests that caching is ~10x faster.
+        // Only require 3x to reduce test flakiness.
+        final int expectedSpeedup = 3;
+
+        final BpfMap cachedMap = SingleWriterBpfMap.getSingleton(TETHER2_DOWNSTREAM6_FS_PATH,
+                TetherDownstream6Key.class, Tether6Value.class);
+        final BpfMap uncachedMap = new BpfMap(TETHER_DOWNSTREAM6_FS_PATH,
+                TetherDownstream6Key.class, Tether6Value.class);
+
+        // Ensure the maps are not empty.
+        for (int i = 0; i < mTestData.size(); i++) {
+            cachedMap.insertEntry(mTestData.keyAt(i), mTestData.valueAt(i));
+            uncachedMap.insertEntry(mTestData.keyAt(i), mTestData.valueAt(i));
+        }
+
+        final CompletableFuture<Integer> cachedResult = new CompletableFuture<>();
+        final CompletableFuture<Integer> uncachedResult = new CompletableFuture<>();
+
+        new Thread(() -> runBenchmarkThread(uncachedMap, uncachedResult, benchmarkTimeMs)).start();
+        new Thread(() -> runBenchmarkThread(cachedMap, cachedResult, benchmarkTimeMs)).start();
+
+        final int cached = cachedResult.get(timeoutMs, TimeUnit.MILLISECONDS);
+        final int uncached = uncachedResult.get(timeoutMs, TimeUnit.MILLISECONDS);
+
+        // Uncomment to see benchmark results.
+        // fail("Cached " + cached + ", uncached " + uncached + ": " + cached / uncached  +"x");
+
+        assertTrue("Less than " + minReads + "cached reads observed", cached > minReads);
+        assertTrue("Less than " + minReads + "uncached reads observed", uncached > minReads);
+        assertTrue("Cached map not at least " + expectedSpeedup + "x faster",
+                cached > expectedSpeedup * uncached);
+    }
 }
diff --git a/Tethering/tests/unit/src/android/net/ip/IpServerTest.java b/Tethering/tests/unit/src/android/net/ip/IpServerTest.java
index a7064e8..00eb3b1 100644
--- a/Tethering/tests/unit/src/android/net/ip/IpServerTest.java
+++ b/Tethering/tests/unit/src/android/net/ip/IpServerTest.java
@@ -53,7 +53,6 @@
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.doNothing;
-import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.mock;
@@ -94,7 +93,6 @@
 import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.SdkUtil.LateSdk;
 import com.android.net.module.util.SharedLog;
-import com.android.net.module.util.ip.IpNeighborMonitor;
 import com.android.networkstack.tethering.BpfCoordinator;
 import com.android.networkstack.tethering.PrivateAddressCoordinator;
 import com.android.networkstack.tethering.TetheringConfiguration;
@@ -174,7 +172,6 @@
     @Mock private IDhcpServer mDhcpServer;
     @Mock private DadProxy mDadProxy;
     @Mock private RouterAdvertisementDaemon mRaDaemon;
-    @Mock private IpNeighborMonitor mIpNeighborMonitor;
     @Mock private IpServer.Dependencies mDependencies;
     @Mock private PrivateAddressCoordinator mAddressCoordinator;
     private final LateSdk<RoutingCoordinatorManager> mRoutingCoordinatorManager =
@@ -213,20 +210,17 @@
             mInterfaceConfiguration.prefixLength = BLUETOOTH_DHCP_PREFIX_LENGTH;
         }
 
-        doReturn(mIpNeighborMonitor).when(mDependencies).getIpNeighborMonitor(any(), any(), any());
-
         when(mTetherConfig.isBpfOffloadEnabled()).thenReturn(usingBpfOffload);
         when(mTetherConfig.useLegacyDhcpServer()).thenReturn(usingLegacyDhcp);
         when(mTetherConfig.getP2pLeasesSubnetPrefixLength()).thenReturn(P2P_SUBNET_PREFIX_LENGTH);
         when(mBpfCoordinator.isUsingBpfOffload()).thenReturn(usingBpfOffload);
         mIpServer = createIpServer(interfaceType);
-        verify(mIpNeighborMonitor).start();
         mIpServer.start();
 
         // Starting the state machine always puts us in a consistent state and notifies
         // the rest of the world that we've changed from an unknown to available state.
         mLooper.dispatchAll();
-        reset(mNetd, mCallback, mIpNeighborMonitor);
+        reset(mNetd, mCallback);
 
         when(mRaDaemon.start()).thenReturn(true);
     }
@@ -242,6 +236,7 @@
             throws Exception {
         initStateMachine(interfaceType, usingLegacyDhcp, usingBpfOffload);
         dispatchCommand(IpServer.CMD_TETHER_REQUESTED, STATE_TETHERED);
+        verify(mBpfCoordinator).addIpServer(mIpServer);
         if (upstreamIface != null) {
             InterfaceParams interfaceParams = mDependencies.getInterfaceParams(upstreamIface);
             assertNotNull("missing upstream interface: " + upstreamIface, interfaceParams);
@@ -250,8 +245,12 @@
             lp.setLinkAddresses(upstreamAddresses);
             dispatchTetherConnectionChanged(upstreamIface, lp, 0);
             Set<IpPrefix> upstreamPrefixes = getTetherableIpv6Prefixes(lp.getLinkAddresses());
-            verify(mBpfCoordinator).updateAllIpv6Rules(
-                    mIpServer, TEST_IFACE_PARAMS, interfaceParams.index, upstreamPrefixes);
+            // One is called when handling CMD_TETHER_CONNECTION_CHANGED and the other one is called
+            // when upstream's LinkProperties is updated (updateUpstreamIPv6LinkProperties)
+            verify(mBpfCoordinator, times(2)).maybeAddUpstreamToLookupTable(
+                    interfaceParams.index, upstreamIface);
+            verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                    mIpServer, interfaceParams.index, upstreamPrefixes);
         }
         reset(mNetd, mBpfCoordinator, mCallback, mAddressCoordinator);
         when(mAddressCoordinator.requestDownstreamAddress(any(), anyInt(),
@@ -314,8 +313,6 @@
 
     @Test
     public void startsOutAvailable() throws Exception {
-        when(mDependencies.getIpNeighborMonitor(any(), any(), any()))
-                .thenReturn(mIpNeighborMonitor);
         mIpServer = createIpServer(TETHERING_BLUETOOTH);
         mIpServer.start();
         mLooper.dispatchAll();
@@ -557,8 +554,8 @@
         inOrder.verify(mBpfCoordinator).maybeDetachProgram(IFACE_NAME, UPSTREAM_IFACE);
         inOrder.verify(mNetd).ipfwdRemoveInterfaceForward(IFACE_NAME, UPSTREAM_IFACE);
         inOrder.verify(mNetd).tetherRemoveForward(IFACE_NAME, UPSTREAM_IFACE);
-        inOrder.verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        inOrder.verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, NO_UPSTREAM, NO_PREFIXES);
         // When tethering stops, upstream interface is set to zero and thus clearing all upstream
         // rules. Downstream rules are needed to be cleared explicitly by calling
         // BpfCoordinator#clearAllIpv6Rules in TetheredState#exit.
@@ -570,7 +567,7 @@
                 argThat(cfg -> IFACE_NAME.equals(cfg.ifName)));
         inOrder.verify(mAddressCoordinator).releaseDownstream(any());
         inOrder.verify(mBpfCoordinator).tetherOffloadClientClear(mIpServer);
-        inOrder.verify(mBpfCoordinator).stopMonitoring(mIpServer);
+        inOrder.verify(mBpfCoordinator).removeIpServer(mIpServer);
         inOrder.verify(mCallback).updateInterfaceState(
                 mIpServer, STATE_AVAILABLE, TETHER_ERROR_NO_ERROR);
         inOrder.verify(mCallback).updateLinkProperties(
@@ -765,8 +762,8 @@
         lp.setInterfaceName(UPSTREAM_IFACE2);
         lp.setLinkAddresses(UPSTREAM_ADDRESSES);
         dispatchTetherConnectionChanged(UPSTREAM_IFACE2, lp, -1);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, UPSTREAM_IFINDEX2, UPSTREAM_PREFIXES);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, UPSTREAM_IFINDEX2, UPSTREAM_PREFIXES);
         reset(mBpfCoordinator);
 
         // Upstream link addresses change result in updating the rules.
@@ -774,8 +771,8 @@
         lp2.setInterfaceName(UPSTREAM_IFACE2);
         lp2.setLinkAddresses(UPSTREAM_ADDRESSES2);
         dispatchTetherConnectionChanged(UPSTREAM_IFACE2, lp2, -1);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, UPSTREAM_IFINDEX2, UPSTREAM_PREFIXES2);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, UPSTREAM_IFINDEX2, UPSTREAM_PREFIXES2);
         reset(mBpfCoordinator);
 
         // When the upstream is lost, rules are removed.
@@ -784,53 +781,54 @@
         // - processMessage CMD_TETHER_CONNECTION_CHANGED for the upstream is lost.
         // - processMessage CMD_IPV6_TETHER_UPDATE for the IPv6 upstream is lost.
         // See dispatchTetherConnectionChanged.
-        verify(mBpfCoordinator, times(2)).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        verify(mBpfCoordinator, times(2)).updateIpv6UpstreamInterface(
+                mIpServer, NO_UPSTREAM, NO_PREFIXES);
         reset(mBpfCoordinator);
 
         // If the upstream is IPv4-only, no rules are added.
         dispatchTetherConnectionChanged(UPSTREAM_IFACE);
-        verify(mBpfCoordinator, never()).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        verify(mBpfCoordinator, never()).updateIpv6UpstreamInterface(
+                mIpServer, NO_UPSTREAM, NO_PREFIXES);
         reset(mBpfCoordinator);
 
         // Rules are added again once upstream IPv6 connectivity is available.
         lp.setInterfaceName(UPSTREAM_IFACE);
         dispatchTetherConnectionChanged(UPSTREAM_IFACE, lp, -1);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
         reset(mBpfCoordinator);
 
         // If upstream IPv6 connectivity is lost, rules are removed.
         dispatchTetherConnectionChanged(UPSTREAM_IFACE, null, 0);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, NO_UPSTREAM, NO_PREFIXES);
         reset(mBpfCoordinator);
 
         // When upstream IPv6 connectivity comes back, rules are added.
         lp.setInterfaceName(UPSTREAM_IFACE);
         dispatchTetherConnectionChanged(UPSTREAM_IFACE, lp, -1);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
         reset(mBpfCoordinator);
 
         // When the downstream interface goes down, rules are removed.
         mIpServer.stop();
         mLooper.dispatchAll();
         verify(mBpfCoordinator).clearAllIpv6Rules(mIpServer);
-        verify(mBpfCoordinator).updateAllIpv6Rules(
-                mIpServer, TEST_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        verify(mBpfCoordinator).removeIpServer(mIpServer);
+        verify(mBpfCoordinator).updateIpv6UpstreamInterface(
+                mIpServer, NO_UPSTREAM, NO_PREFIXES);
         reset(mBpfCoordinator);
     }
 
     @Test
-    public void stopNeighborMonitoringWhenInterfaceDown() throws Exception {
+    public void removeIpServerWhenInterfaceDown() throws Exception {
         initTetheredStateMachine(TETHERING_WIFI, UPSTREAM_IFACE, UPSTREAM_ADDRESSES,
                 false /* usingLegacyDhcp */, DEFAULT_USING_BPF_OFFLOAD);
 
         mIpServer.stop();
         mLooper.dispatchAll();
-        verify(mIpNeighborMonitor).stop();
+        verify(mBpfCoordinator).removeIpServer(mIpServer);
     }
 
     private LinkProperties buildIpv6OnlyLinkProperties(final String iface) {
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
index 47ecf58..e54a7e0 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
@@ -25,8 +25,6 @@
 import static android.net.NetworkStats.TAG_NONE;
 import static android.net.NetworkStats.UID_ALL;
 import static android.net.NetworkStats.UID_TETHERING;
-import static android.net.TetheringManager.TETHERING_WIFI;
-import static android.net.ip.IpServer.STATE_TETHERED;
 import static android.net.netstats.provider.NetworkStatsProvider.QUOTA_UNLIMITED;
 import static android.system.OsConstants.ETH_P_IP;
 import static android.system.OsConstants.ETH_P_IPV6;
@@ -79,9 +77,7 @@
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.argThat;
 import static org.mockito.Mockito.clearInvocations;
-import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.inOrder;
-import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.spy;
@@ -100,11 +96,9 @@
 import android.net.Network;
 import android.net.NetworkCapabilities;
 import android.net.NetworkStats;
-import android.net.RoutingCoordinatorManager;
 import android.net.TetherOffloadRuleParcel;
 import android.net.TetherStatsParcel;
 import android.net.ip.IpServer;
-import android.net.ip.RouterAdvertisementDaemon;
 import android.os.Build;
 import android.os.Handler;
 import android.os.test.TestLooper;
@@ -119,12 +113,10 @@
 
 import com.android.dx.mockito.inline.extended.ExtendedMockito;
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.IBpfMap;
 import com.android.net.module.util.InterfaceParams;
 import com.android.net.module.util.NetworkStackConstants;
-import com.android.net.module.util.SdkUtil.LateSdk;
 import com.android.net.module.util.SharedLog;
 import com.android.net.module.util.Struct.S32;
 import com.android.net.module.util.bpf.Tether4Key;
@@ -143,8 +135,6 @@
 import com.android.networkstack.tethering.BpfCoordinator.ClientInfo;
 import com.android.networkstack.tethering.BpfCoordinator.Ipv6DownstreamRule;
 import com.android.networkstack.tethering.BpfCoordinator.Ipv6UpstreamRule;
-import com.android.networkstack.tethering.metrics.TetheringMetrics;
-import com.android.networkstack.tethering.util.InterfaceSet;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
@@ -209,11 +199,6 @@
     private static final MacAddress MAC_B = MacAddress.fromString("11:22:33:00:00:0b");
     private static final MacAddress MAC_NULL = MacAddress.fromString("00:00:00:00:00:00");
 
-    private static final LinkAddress UPSTREAM_ADDRESS = new LinkAddress("2001:db8:0:1234::168/64");
-    private static final LinkAddress UPSTREAM_ADDRESS2 = new LinkAddress("2001:db8:0:abcd::168/64");
-    private static final Set<LinkAddress> UPSTREAM_ADDRESSES = Set.of(UPSTREAM_ADDRESS);
-    private static final Set<LinkAddress> UPSTREAM_ADDRESSES2 =
-            Set.of(UPSTREAM_ADDRESS, UPSTREAM_ADDRESS2);
     private static final IpPrefix UPSTREAM_PREFIX = new IpPrefix("2001:db8:0:1234::/64");
     private static final IpPrefix UPSTREAM_PREFIX2 = new IpPrefix("2001:db8:0:abcd::/64");
     private static final Set<IpPrefix> UPSTREAM_PREFIXES = Set.of(UPSTREAM_PREFIX);
@@ -449,13 +434,6 @@
     @Mock private TetheringConfiguration mTetherConfig;
     @Mock private ConntrackMonitor mConntrackMonitor;
     @Mock private IpNeighborMonitor mIpNeighborMonitor;
-    @Mock private RouterAdvertisementDaemon mRaDaemon;
-    @Mock private IpServer.Dependencies mIpServerDeps;
-    @Mock private IpServer.Callback mIpServerCallback;
-    @Mock private PrivateAddressCoordinator mAddressCoordinator;
-    private final LateSdk<RoutingCoordinatorManager> mRoutingCoordinatorManager =
-            new LateSdk<>(SdkLevel.isAtLeastS() ? mock(RoutingCoordinatorManager.class) : null);
-    @Mock private TetheringMetrics mTetheringMetrics;
 
     // Late init since methods must be called by the thread that created this object.
     private TestableNetworkStatsProviderCbBinder mTetherStatsProviderCb;
@@ -573,24 +551,8 @@
     @Before public void setUp() {
         MockitoAnnotations.initMocks(this);
         when(mTetherConfig.isBpfOffloadEnabled()).thenReturn(true /* default value */);
-
-        // Simulate the behavior of RoutingCoordinator
-        if (null != mRoutingCoordinatorManager.value) {
-            doAnswer(it -> {
-                final String fromIface = (String) it.getArguments()[0];
-                final String toIface = (String) it.getArguments()[1];
-                mNetd.tetherAddForward(fromIface, toIface);
-                mNetd.ipfwdAddInterfaceForward(fromIface, toIface);
-                return null;
-            }).when(mRoutingCoordinatorManager.value).addInterfaceForward(any(), any());
-            doAnswer(it -> {
-                final String fromIface = (String) it.getArguments()[0];
-                final String toIface = (String) it.getArguments()[1];
-                mNetd.ipfwdRemoveInterfaceForward(fromIface, toIface);
-                mNetd.tetherRemoveForward(fromIface, toIface);
-                return null;
-            }).when(mRoutingCoordinatorManager.value).removeInterfaceForward(any(), any());
-        }
+        when(mIpServer.getInterfaceParams()).thenReturn(DOWNSTREAM_IFACE_PARAMS);
+        when(mIpServer2.getInterfaceParams()).thenReturn(DOWNSTREAM_IFACE_PARAMS2);
     }
 
     private void waitForIdle() {
@@ -603,70 +565,39 @@
         when(mNetd.tetherOffloadGetStats()).thenReturn(new TetherStatsParcel[0]);
     }
 
-    @NonNull
-    private IpServer makeAndStartIpServer(String interfaceName, BpfCoordinator bpfCoordinator)
-            throws Exception {
-        final LinkAddress testAddress = new LinkAddress("192.168.42.5/24");
-        when(mIpServerDeps.getRouterAdvertisementDaemon(any())).thenReturn(mRaDaemon);
-        when(mIpServerDeps.getInterfaceParams(DOWNSTREAM_IFACE)).thenReturn(
-                DOWNSTREAM_IFACE_PARAMS);
-        when(mIpServerDeps.getInterfaceParams(UPSTREAM_IFACE)).thenReturn(UPSTREAM_IFACE_PARAMS);
-        when(mIpServerDeps.getInterfaceParams(UPSTREAM_IFACE2)).thenReturn(UPSTREAM_IFACE_PARAMS2);
-        when(mIpServerDeps.getInterfaceParams(IPSEC_IFACE)).thenReturn(IPSEC_IFACE_PARAMS);
-        when(mAddressCoordinator.requestDownstreamAddress(any(), anyInt(),
-                anyBoolean())).thenReturn(testAddress);
-        when(mRaDaemon.start()).thenReturn(true);
-        ArgumentCaptor<NeighborEventConsumer> neighborEventCaptor =
-                ArgumentCaptor.forClass(NeighborEventConsumer.class);
-        doReturn(mIpNeighborMonitor).when(mIpServerDeps).getIpNeighborMonitor(any(), any(),
-                neighborEventCaptor.capture());
-        final IpServer ipServer = new IpServer(
-                interfaceName, mHandler, TETHERING_WIFI, new SharedLog("test"), mNetd,
-                bpfCoordinator, mRoutingCoordinatorManager, mIpServerCallback, mTetherConfig,
-                mAddressCoordinator, mTetheringMetrics, mIpServerDeps);
-        ipServer.start();
-        ipServer.sendMessage(IpServer.CMD_TETHER_REQUESTED, STATE_TETHERED);
-        mTestLooper.dispatchAll();
-
-        LinkProperties lp = new LinkProperties();
-        lp.setInterfaceName(UPSTREAM_IFACE);
-        lp.setLinkAddresses(UPSTREAM_ADDRESSES);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE, lp, 0);
-
-        mNeighborEventConsumer = neighborEventCaptor.getValue();
-        return ipServer;
-    }
-
-    private void dispatchTetherConnectionChanged(IpServer ipServer, String upstreamIface,
-            LinkProperties v6lp, int ttlAdjustment) {
-        dispatchTetherConnectionChanged(ipServer, upstreamIface);
-        ipServer.sendMessage(IpServer.CMD_IPV6_TETHER_UPDATE, ttlAdjustment, 0, v6lp);
-        mTestLooper.dispatchAll();
-    }
-
-    private void dispatchTetherConnectionChanged(IpServer ipServer, String upstreamIface) {
-        final InterfaceSet ifs = (upstreamIface != null) ? new InterfaceSet(upstreamIface) : null;
-        ipServer.sendMessage(IpServer.CMD_TETHER_CONNECTION_CHANGED, ifs);
-        mTestLooper.dispatchAll();
+    private void dispatchIpv6UpstreamChanged(BpfCoordinator bpfCoordinator, IpServer ipServer,
+            int upstreamIfindex, String upstreamIface, Set<IpPrefix> upstreamPrefixes) {
+        bpfCoordinator.maybeAddUpstreamToLookupTable(upstreamIfindex, upstreamIface);
+        bpfCoordinator.updateIpv6UpstreamInterface(ipServer, upstreamIfindex, upstreamPrefixes);
+        when(ipServer.getIpv6UpstreamIfindex()).thenReturn(upstreamIfindex);
+        when(ipServer.getIpv6UpstreamPrefixes()).thenReturn(upstreamPrefixes);
     }
 
     private void recvNewNeigh(int ifindex, InetAddress addr, short nudState, MacAddress mac) {
         mNeighborEventConsumer.accept(new NeighborEvent(0, RTM_NEWNEIGH, ifindex, addr,
                 nudState, mac));
-        mTestLooper.dispatchAll();
     }
 
     private void recvDelNeigh(int ifindex, InetAddress addr, short nudState, MacAddress mac) {
         mNeighborEventConsumer.accept(new NeighborEvent(0, RTM_DELNEIGH, ifindex, addr,
                 nudState, mac));
-        mTestLooper.dispatchAll();
     }
 
     @NonNull
     private BpfCoordinator makeBpfCoordinator() throws Exception {
+        return makeBpfCoordinator(true /* addDefaultIpServer */);
+    }
+
+    @NonNull
+    private BpfCoordinator makeBpfCoordinator(boolean addDefaultIpServer) throws Exception {
         // mStatsManager will be invoked twice if BpfCoordinator is created the second time.
         clearInvocations(mStatsManager);
+        ArgumentCaptor<NeighborEventConsumer> neighborCaptor =
+                ArgumentCaptor.forClass(NeighborEventConsumer.class);
+        doReturn(mIpNeighborMonitor).when(mDeps).getIpNeighborMonitor(neighborCaptor.capture());
         final BpfCoordinator coordinator = new BpfCoordinator(mDeps);
+        mNeighborEventConsumer = neighborCaptor.getValue();
+        assertNotNull(mNeighborEventConsumer);
 
         mConsumer = coordinator.getBpfConntrackEventConsumerForTesting();
         mTetherClients = coordinator.getTetherClientsForTesting();
@@ -681,6 +612,10 @@
         mTetherStatsProviderCb = new TestableNetworkStatsProviderCbBinder();
         mTetherStatsProvider.setProviderCallbackBinder(mTetherStatsProviderCb);
 
+        if (addDefaultIpServer) {
+            coordinator.addIpServer(mIpServer);
+        }
+
         return coordinator;
     }
 
@@ -1008,7 +943,6 @@
 
         final String mobileIface = "rmnet_data0";
         final Integer mobileIfIndex = 100;
-        coordinator.maybeAddUpstreamToLookupTable(mobileIfIndex, mobileIface);
 
         // InOrder is required because mBpfStatsMap may be accessed by both
         // BpfCoordinator#tetherOffloadRuleAdd and BpfCoordinator#tetherOffloadGetAndClearStats.
@@ -1020,19 +954,18 @@
                 mobileIfIndex, DOWNSTREAM_IFINDEX, UPSTREAM_PREFIX, DOWNSTREAM_MAC);
         final Ipv6DownstreamRule downstreamRule = buildTestDownstreamRule(
                 mobileIfIndex, NEIGH_A, MAC_A);
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, mobileIfIndex, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, mobileIfIndex, mobileIface, UPSTREAM_PREFIXES);
         verifyTetherOffloadSetInterfaceQuota(inOrder, mobileIfIndex, QUOTA_UNLIMITED,
                 true /* isInit */);
         verifyAddUpstreamRule(inOrder, upstreamRule);
-        coordinator.addIpv6DownstreamRule(mIpServer, downstreamRule);
+        recvNewNeigh(DOWNSTREAM_IFINDEX, NEIGH_A, NUD_REACHABLE, MAC_A);
         verifyAddDownstreamRule(inOrder, downstreamRule);
 
         // Removing the last rule on current upstream immediately sends the cleanup stuff to BPF.
         updateStatsEntryForTetherOffloadGetAndClearStats(
                 buildTestTetherStatsParcel(mobileIfIndex, 0, 0, 0, 0));
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
         verifyRemoveDownstreamRule(inOrder, downstreamRule);
         verifyRemoveUpstreamRule(inOrder, upstreamRule);
         verifyTetherOffloadGetAndClearStats(inOrder, mobileIfIndex);
@@ -1056,7 +989,6 @@
 
         doReturn(usingApiS).when(mDeps).isAtLeastS();
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        coordinator.startPolling();
 
         final String mobileIface = "rmnet_data0";
         final Integer mobileIfIndex = 100;
@@ -1092,7 +1024,6 @@
         setupFunctioningNetdInterface();
 
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        coordinator.startPolling();
 
         final String wlanIface = "wlan0";
         final Integer wlanIfIndex = 100;
@@ -1148,7 +1079,7 @@
         // [3] Stop coordinator.
         // Shutdown the coordinator and clear the invocation history, especially the
         // tetherOffloadGetStats() calls.
-        coordinator.stopPolling();
+        coordinator.removeIpServer(mIpServer);
         clearStatsInvocations();
 
         // Verify the polling update thread stopped.
@@ -1162,7 +1093,6 @@
         setupFunctioningNetdInterface();
 
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        coordinator.startPolling();
 
         final String mobileIface = "rmnet_data0";
         final Integer mobileIfIndex = 100;
@@ -1350,7 +1280,6 @@
 
         final String mobileIface = "rmnet_data0";
         final int mobileIfIndex = 100;
-        coordinator.maybeAddUpstreamToLookupTable(mobileIfIndex, mobileIface);
 
         // [1] Default limit.
         // Set the unlimited quota as default if the service has never applied a data limit for a
@@ -1358,8 +1287,8 @@
         final Ipv6UpstreamRule rule = buildTestUpstreamRule(
                 mobileIfIndex, DOWNSTREAM_IFINDEX, UPSTREAM_PREFIX, DOWNSTREAM_MAC);
         final InOrder inOrder = inOrder(mNetd, mBpfUpstream6Map, mBpfLimitMap, mBpfStatsMap);
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, mobileIfIndex, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, mobileIfIndex, mobileIface, UPSTREAM_PREFIXES);
         verifyTetherOffloadSetInterfaceQuota(inOrder, mobileIfIndex, QUOTA_UNLIMITED,
                 true /* isInit */);
         verifyAddUpstreamRule(inOrder, rule);
@@ -1395,7 +1324,6 @@
 
         final String mobileIface = "rmnet_data0";
         final int mobileIfIndex = 100;
-        coordinator.maybeAddUpstreamToLookupTable(mobileIfIndex, mobileIface);
 
         // Applying a data limit to the current upstream does not take any immediate action.
         // The data limit could be only set on an upstream which has rules.
@@ -1408,31 +1336,30 @@
         // Adding the first rule on current upstream immediately sends the quota to BPF.
         final Ipv6UpstreamRule ruleA = buildTestUpstreamRule(
                 mobileIfIndex, DOWNSTREAM_IFINDEX, UPSTREAM_PREFIX, DOWNSTREAM_MAC);
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, mobileIfIndex, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, mobileIfIndex, mobileIface, UPSTREAM_PREFIXES);
         verifyTetherOffloadSetInterfaceQuota(inOrder, mobileIfIndex, limit, true /* isInit */);
         verifyAddUpstreamRule(inOrder, ruleA);
         inOrder.verifyNoMoreInteractions();
 
         // Adding the second rule on current upstream does not send the quota to BPF.
+        coordinator.addIpServer(mIpServer2);
         final Ipv6UpstreamRule ruleB = buildTestUpstreamRule(
                 mobileIfIndex, DOWNSTREAM_IFINDEX2, UPSTREAM_PREFIX, DOWNSTREAM_MAC2);
-        coordinator.updateAllIpv6Rules(
-                mIpServer2, DOWNSTREAM_IFACE_PARAMS2, mobileIfIndex, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer2, mobileIfIndex, mobileIface, UPSTREAM_PREFIXES);
         verifyAddUpstreamRule(inOrder, ruleB);
         verifyNeverTetherOffloadSetInterfaceQuota(inOrder);
 
         // Removing the second rule on current upstream does not send the quota to BPF.
-        coordinator.updateAllIpv6Rules(
-                mIpServer2, DOWNSTREAM_IFACE_PARAMS2, NO_UPSTREAM, NO_PREFIXES);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer2, NO_UPSTREAM, null, NO_PREFIXES);
         verifyRemoveUpstreamRule(inOrder, ruleB);
         verifyNeverTetherOffloadSetInterfaceQuota(inOrder);
 
         // Removing the last rule on current upstream immediately sends the cleanup stuff to BPF.
         updateStatsEntryForTetherOffloadGetAndClearStats(
                 buildTestTetherStatsParcel(mobileIfIndex, 0, 0, 0, 0));
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, NO_UPSTREAM, NO_PREFIXES);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
         verifyRemoveUpstreamRule(inOrder, ruleA);
         verifyTetherOffloadGetAndClearStats(inOrder, mobileIfIndex);
         inOrder.verifyNoMoreInteractions();
@@ -1448,8 +1375,6 @@
         final String mobileIface = "rmnet_data0";
         final Integer ethIfIndex = 100;
         final Integer mobileIfIndex = 101;
-        coordinator.maybeAddUpstreamToLookupTable(ethIfIndex, ethIface);
-        coordinator.maybeAddUpstreamToLookupTable(mobileIfIndex, mobileIface);
 
         final InOrder inOrder = inOrder(mNetd, mBpfDownstream6Map, mBpfUpstream6Map, mBpfLimitMap,
                 mBpfStatsMap);
@@ -1470,14 +1395,14 @@
         final Ipv6DownstreamRule ethernetRuleB = buildTestDownstreamRule(
                 ethIfIndex, NEIGH_B, MAC_B);
 
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, ethIfIndex, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, ethIfIndex, ethIface, UPSTREAM_PREFIXES);
         verifyTetherOffloadSetInterfaceQuota(inOrder, ethIfIndex, QUOTA_UNLIMITED,
                 true /* isInit */);
         verifyAddUpstreamRule(inOrder, ethernetUpstreamRule);
-        coordinator.addIpv6DownstreamRule(mIpServer, ethernetRuleA);
+        recvNewNeigh(DOWNSTREAM_IFINDEX, NEIGH_A, NUD_REACHABLE, MAC_A);
         verifyAddDownstreamRule(inOrder, ethernetRuleA);
-        coordinator.addIpv6DownstreamRule(mIpServer, ethernetRuleB);
+        recvNewNeigh(DOWNSTREAM_IFINDEX, NEIGH_B, NUD_REACHABLE, MAC_B);
         verifyAddDownstreamRule(inOrder, ethernetRuleB);
 
         // [2] Update the existing rules from Ethernet to cellular.
@@ -1494,8 +1419,8 @@
 
         // Update the existing rules for upstream changes. The rules are removed and re-added one
         // by one for updating upstream interface index and prefixes by #tetherOffloadRuleUpdate.
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, mobileIfIndex, UPSTREAM_PREFIXES2);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, mobileIfIndex, mobileIface, UPSTREAM_PREFIXES2);
         verifyRemoveDownstreamRule(inOrder, ethernetRuleA);
         verifyRemoveDownstreamRule(inOrder, ethernetRuleB);
         verifyRemoveUpstreamRule(inOrder, ethernetUpstreamRule);
@@ -1532,7 +1457,6 @@
         // #makeBpfCoordinator for testing.
         // See #testBpfDisabledbyNoBpfDownstream6Map.
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        coordinator.startPolling();
 
         // The tether stats polling task should not be scheduled.
         mTestLooper.moveTimeForward(DEFAULT_TETHER_OFFLOAD_POLL_INTERVAL_MS);
@@ -1549,7 +1473,7 @@
         final InetAddress neigh = InetAddresses.parseNumericAddress("2001:db8::1");
         final MacAddress mac = MacAddress.fromString("00:00:00:00:00:0a");
         final Ipv6DownstreamRule rule = buildTestDownstreamRule(ifIndex, neigh, mac);
-        coordinator.addIpv6DownstreamRule(mIpServer, rule);
+        recvNewNeigh(DOWNSTREAM_IFINDEX, neigh, NUD_REACHABLE, mac);
         verifyNeverAddDownstreamRule();
         LinkedHashMap<Inet6Address, Ipv6DownstreamRule> rules =
                 coordinator.getIpv6DownstreamRulesForTesting().get(mIpServer);
@@ -1561,7 +1485,7 @@
         rules = new LinkedHashMap<Inet6Address, Ipv6DownstreamRule>();
         rules.put(rule.address, rule);
         coordinator.getIpv6DownstreamRulesForTesting().put(mIpServer, rules);
-        coordinator.removeIpv6DownstreamRule(mIpServer, rule);
+        recvNewNeigh(DOWNSTREAM_IFINDEX, neigh, NUD_STALE, mac);
         verifyNeverRemoveDownstreamRule();
         rules = coordinator.getIpv6DownstreamRulesForTesting().get(mIpServer);
         assertNotNull(rules);
@@ -1575,8 +1499,8 @@
         assertEquals(1, rules.size());
 
         // The rule can't be updated.
-        coordinator.updateAllIpv6Rules(mIpServer, DOWNSTREAM_IFACE_PARAMS,
-                rule.upstreamIfindex + 1 /* new */, UPSTREAM_PREFIXES);
+        coordinator.updateIpv6UpstreamInterface(mIpServer, rule.upstreamIfindex + 1 /* new */,
+                UPSTREAM_PREFIXES);
         verifyNeverRemoveDownstreamRule();
         verifyNeverAddDownstreamRule();
         rules = coordinator.getIpv6DownstreamRulesForTesting().get(mIpServer);
@@ -1753,18 +1677,14 @@
         final BpfCoordinator coordinator = makeBpfCoordinator();
 
         // [1] The default polling interval.
-        coordinator.startPolling();
         assertEquals(DEFAULT_TETHER_OFFLOAD_POLL_INTERVAL_MS, coordinator.getPollingInterval());
-        coordinator.stopPolling();
 
         // [2] Expect the invalid polling interval isn't applied. The valid range of interval is
         // DEFAULT_TETHER_OFFLOAD_POLL_INTERVAL_MS..max_long.
         for (final int interval
                 : new int[] {0, 100, DEFAULT_TETHER_OFFLOAD_POLL_INTERVAL_MS - 1}) {
             when(mTetherConfig.getOffloadPollInterval()).thenReturn(interval);
-            coordinator.startPolling();
             assertEquals(DEFAULT_TETHER_OFFLOAD_POLL_INTERVAL_MS, coordinator.getPollingInterval());
-            coordinator.stopPolling();
         }
 
         // [3] Set a specific polling interval which is larger than default value.
@@ -1772,7 +1692,6 @@
         // approximation is used to verify the scheduled time of the polling thread.
         final int pollingInterval = 100_000;
         when(mTetherConfig.getOffloadPollInterval()).thenReturn(pollingInterval);
-        coordinator.startPolling();
 
         // Expect the specific polling interval to be applied.
         assertEquals(pollingInterval, coordinator.getPollingInterval());
@@ -1800,19 +1719,19 @@
     public void testStartStopConntrackMonitoring() throws Exception {
         setupFunctioningNetdInterface();
 
-        final BpfCoordinator coordinator = makeBpfCoordinator();
+        final BpfCoordinator coordinator = makeBpfCoordinator(false /* addDefaultIpServer */);
 
         // [1] Don't stop monitoring if it has never started.
-        coordinator.stopMonitoring(mIpServer);
+        coordinator.removeIpServer(mIpServer);
         verify(mConntrackMonitor, never()).stop();
 
         // [2] Start monitoring.
-        coordinator.startMonitoring(mIpServer);
+        coordinator.addIpServer(mIpServer);
         verify(mConntrackMonitor).start();
         clearInvocations(mConntrackMonitor);
 
         // [3] Stop monitoring.
-        coordinator.stopMonitoring(mIpServer);
+        coordinator.removeIpServer(mIpServer);
         verify(mConntrackMonitor).stop();
     }
 
@@ -1823,12 +1742,12 @@
     public void testStartStopConntrackMonitoring_R() throws Exception {
         setupFunctioningNetdInterface();
 
-        final BpfCoordinator coordinator = makeBpfCoordinator();
+        final BpfCoordinator coordinator = makeBpfCoordinator(false /* addDefaultIpServer */);
 
-        coordinator.startMonitoring(mIpServer);
+        coordinator.addIpServer(mIpServer);
         verify(mConntrackMonitor, never()).start();
 
-        coordinator.stopMonitoring(mIpServer);
+        coordinator.removeIpServer(mIpServer);
         verify(mConntrackMonitor, never()).stop();
     }
 
@@ -1837,23 +1756,23 @@
     public void testStartStopConntrackMonitoringWithTwoDownstreamIfaces() throws Exception {
         setupFunctioningNetdInterface();
 
-        final BpfCoordinator coordinator = makeBpfCoordinator();
+        final BpfCoordinator coordinator = makeBpfCoordinator(false /* addDefaultIpServer */);
 
         // [1] Start monitoring at the first IpServer adding.
-        coordinator.startMonitoring(mIpServer);
+        coordinator.addIpServer(mIpServer);
         verify(mConntrackMonitor).start();
         clearInvocations(mConntrackMonitor);
 
         // [2] Don't start monitoring at the second IpServer adding.
-        coordinator.startMonitoring(mIpServer2);
+        coordinator.addIpServer(mIpServer2);
         verify(mConntrackMonitor, never()).start();
 
         // [3] Don't stop monitoring if any downstream interface exists.
-        coordinator.stopMonitoring(mIpServer2);
+        coordinator.removeIpServer(mIpServer2);
         verify(mConntrackMonitor, never()).stop();
 
         // [4] Stop monitoring if no downstream exists.
-        coordinator.stopMonitoring(mIpServer);
+        coordinator.removeIpServer(mIpServer);
         verify(mConntrackMonitor).stop();
     }
 
@@ -2016,9 +1935,8 @@
     public void testAddDevMapRule6() throws Exception {
         final BpfCoordinator coordinator = makeBpfCoordinator();
 
-        coordinator.maybeAddUpstreamToLookupTable(UPSTREAM_IFINDEX, UPSTREAM_IFACE);
-        coordinator.updateAllIpv6Rules(
-                mIpServer, DOWNSTREAM_IFACE_PARAMS, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         verify(mBpfDevMap).updateEntry(eq(new TetherDevKey(UPSTREAM_IFINDEX)),
                 eq(new TetherDevValue(UPSTREAM_IFINDEX)));
         verify(mBpfDevMap).updateEntry(eq(new TetherDevKey(DOWNSTREAM_IFINDEX)),
@@ -2027,8 +1945,9 @@
 
         // Adding the second downstream, only the second downstream ifindex is added to DevMap,
         // the existing upstream ifindex won't be added again.
-        coordinator.updateAllIpv6Rules(
-                mIpServer2, DOWNSTREAM_IFACE_PARAMS2, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
+        coordinator.addIpServer(mIpServer2);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer2, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         verify(mBpfDevMap).updateEntry(eq(new TetherDevKey(DOWNSTREAM_IFINDEX2)),
                 eq(new TetherDevValue(DOWNSTREAM_IFINDEX2)));
         verify(mBpfDevMap, never()).updateEntry(eq(new TetherDevKey(UPSTREAM_IFINDEX)),
@@ -2087,7 +2006,6 @@
                 .startMocking();
         try {
             final BpfCoordinator coordinator = makeBpfCoordinator();
-            coordinator.startPolling();
             bpfMap.insertEntry(tcpKey, tcpValue);
             bpfMap.insertEntry(udpKey, udpValue);
 
@@ -2116,7 +2034,7 @@
             ExtendedMockito.clearInvocations(staticMockMarker(NetlinkUtils.class));
 
             // [3] Don't refresh conntrack timeout if polling stopped.
-            coordinator.stopPolling();
+            coordinator.removeIpServer(mIpServer);
             mTestLooper.moveTimeForward(CONNTRACK_TIMEOUT_UPDATE_INTERVAL_MS);
             waitForIdle();
             ExtendedMockito.verifyNoMoreInteractions(staticMockMarker(NetlinkUtils.class));
@@ -2855,8 +2773,9 @@
         final int myIfindex = DOWNSTREAM_IFINDEX;
         final int notMyIfindex = myIfindex - 1;
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        final IpServer ipServer = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator);
 
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         resetNetdAndBpfMaps();
         verifyNoMoreInteractions(mNetd, mBpfDownstream6Map, mBpfUpstream6Map);
 
@@ -2905,10 +2824,8 @@
         resetNetdAndBpfMaps();
 
         InOrder inOrder = inOrder(mNetd, mBpfDownstream6Map, mBpfUpstream6Map);
-        LinkProperties lp = new LinkProperties();
-        lp.setInterfaceName(UPSTREAM_IFACE2);
-        lp.setLinkAddresses(UPSTREAM_ADDRESSES);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE2, lp, -1);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX2, UPSTREAM_IFACE2, UPSTREAM_PREFIXES);
         final Ipv6DownstreamRule ruleA2 = buildTestDownstreamRule(
                 UPSTREAM_IFINDEX2, NEIGH_A, MAC_A);
         final Ipv6DownstreamRule ruleB2 = buildTestDownstreamRule(
@@ -2922,11 +2839,9 @@
         verifyNoUpstreamIpv6ForwardingChange(inOrder);
         resetNetdAndBpfMaps();
 
-        // Upstream link addresses change result in updating the rules.
-        LinkProperties lp2 = new LinkProperties();
-        lp2.setInterfaceName(UPSTREAM_IFACE2);
-        lp2.setLinkAddresses(UPSTREAM_ADDRESSES2);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE2, lp2, -1);
+        // Upstream prefixes change result in updating the rules.
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX2, UPSTREAM_IFACE2, UPSTREAM_PREFIXES2);
         verifyRemoveDownstreamRule(inOrder, ruleA2);
         verifyRemoveDownstreamRule(inOrder, ruleB2);
         verifyStopUpstreamIpv6Forwarding(inOrder, UPSTREAM_PREFIXES);
@@ -2936,7 +2851,7 @@
         resetNetdAndBpfMaps();
 
         // When the upstream is lost, rules are removed.
-        dispatchTetherConnectionChanged(ipServer, null, null, 0);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
         verifyStopUpstreamIpv6Forwarding(inOrder, UPSTREAM_PREFIXES2);
         verifyRemoveDownstreamRule(ruleA2);
         verifyRemoveDownstreamRule(ruleB2);
@@ -2947,7 +2862,7 @@
         resetNetdAndBpfMaps();
 
         // If the upstream is IPv4-only, no IPv6 rules are added to BPF map.
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
         resetNetdAndBpfMaps();
         recvNewNeigh(myIfindex, NEIGH_A, NUD_REACHABLE, MAC_A);
         verifyNoUpstreamIpv6ForwardingChange(null);
@@ -2957,8 +2872,8 @@
 
         // Rules can be added again once upstream IPv6 connectivity is available. The existing rules
         // with an upstream of NO_UPSTREAM are reapplied.
-        lp.setInterfaceName(UPSTREAM_IFACE);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE, lp, -1);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         verifyStartUpstreamIpv6Forwarding(null, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
         verifyAddDownstreamRule(ruleA);
         recvNewNeigh(myIfindex, NEIGH_B, NUD_REACHABLE, MAC_B);
@@ -2966,23 +2881,27 @@
 
         // If upstream IPv6 connectivity is lost, rules are removed.
         resetNetdAndBpfMaps();
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE, null, 0);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
         verifyRemoveDownstreamRule(ruleA);
         verifyRemoveDownstreamRule(ruleB);
         verifyStopUpstreamIpv6Forwarding(null, UPSTREAM_PREFIXES);
 
         // When upstream IPv6 connectivity comes back, upstream rules are added and downstream rules
         // are reapplied.
-        lp.setInterfaceName(UPSTREAM_IFACE);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE, lp, -1);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         verifyStartUpstreamIpv6Forwarding(null, UPSTREAM_IFINDEX, UPSTREAM_PREFIXES);
         verifyAddDownstreamRule(ruleA);
         verifyAddDownstreamRule(ruleB);
         resetNetdAndBpfMaps();
 
         // When the downstream interface goes down, rules are removed.
-        ipServer.stop();
-        mTestLooper.dispatchAll();
+        // Simulate receiving CMD_INTERFACE_DOWN in the BaseServingState of IpServer.
+        reset(mIpNeighborMonitor);
+        dispatchIpv6UpstreamChanged(coordinator, mIpServer, NO_UPSTREAM, null, NO_PREFIXES);
+        coordinator.tetherOffloadClientClear(mIpServer);
+        coordinator.removeIpServer(mIpServer);
+
         verifyStopUpstreamIpv6Forwarding(null, UPSTREAM_PREFIXES);
         verifyRemoveDownstreamRule(ruleA);
         verifyRemoveDownstreamRule(ruleB);
@@ -3004,7 +2923,8 @@
         // [1] Enable BPF offload.
         // A neighbor that is added or deleted causes the rule to be added or removed.
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        final IpServer ipServer = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
         resetNetdAndBpfMaps();
 
         recvNewNeigh(myIfindex, NEIGH_A, NUD_REACHABLE, MAC_A);
@@ -3019,10 +2939,8 @@
         resetNetdAndBpfMaps();
 
         // Upstream IPv6 connectivity change causes upstream rules change.
-        LinkProperties lp2 = new LinkProperties();
-        lp2.setInterfaceName(UPSTREAM_IFACE2);
-        lp2.setLinkAddresses(UPSTREAM_ADDRESSES2);
-        dispatchTetherConnectionChanged(ipServer, UPSTREAM_IFACE2, lp2, 0);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX2, UPSTREAM_IFACE2, UPSTREAM_PREFIXES2);
         verifyStartUpstreamIpv6Forwarding(null, UPSTREAM_IFINDEX2, UPSTREAM_PREFIXES2);
         resetNetdAndBpfMaps();
 
@@ -3030,7 +2948,6 @@
         // A neighbor that is added or deleted doesn’t cause the rule to be added or removed.
         when(mTetherConfig.isBpfOffloadEnabled()).thenReturn(false);
         final BpfCoordinator coordinator2 = makeBpfCoordinator();
-        final IpServer ipServer2 = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator2);
         verifyNoUpstreamIpv6ForwardingChange(null);
         resetNetdAndBpfMaps();
 
@@ -3043,7 +2960,8 @@
         resetNetdAndBpfMaps();
 
         // Upstream IPv6 connectivity change doesn't cause the rule to be added or removed.
-        dispatchTetherConnectionChanged(ipServer2, UPSTREAM_IFACE2, lp2, 0);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer2, UPSTREAM_IFINDEX2, UPSTREAM_IFACE2, NO_PREFIXES);
         verifyNoUpstreamIpv6ForwardingChange(null);
         verifyNeverRemoveDownstreamRule();
         resetNetdAndBpfMaps();
@@ -3053,7 +2971,6 @@
     public void doesNotStartIpNeighborMonitorIfBpfOffloadDisabled() throws Exception {
         when(mTetherConfig.isBpfOffloadEnabled()).thenReturn(false);
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        final IpServer ipServer = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator);
 
         // IP neighbor monitor doesn't start if BPF offload is disabled.
         verify(mIpNeighborMonitor, never()).start();
@@ -3062,15 +2979,10 @@
     @Test
     public void testSkipVirtualNetworkInBpf() throws Exception {
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        final IpServer ipServer = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator);
-        final LinkProperties v6Only = new LinkProperties();
-        v6Only.setInterfaceName(IPSEC_IFACE);
-        v6Only.setLinkAddresses(UPSTREAM_ADDRESSES);
 
         resetNetdAndBpfMaps();
-        dispatchTetherConnectionChanged(ipServer, IPSEC_IFACE, v6Only, 0);
-        verify(mNetd).tetherAddForward(DOWNSTREAM_IFACE, IPSEC_IFACE);
-        verify(mNetd).ipfwdAddInterfaceForward(DOWNSTREAM_IFACE, IPSEC_IFACE);
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, IPSEC_IFINDEX, IPSEC_IFACE, UPSTREAM_PREFIXES);
         verifyNeverAddUpstreamRule();
 
         recvNewNeigh(DOWNSTREAM_IFINDEX, NEIGH_A, NUD_REACHABLE, MAC_A);
@@ -3080,7 +2992,6 @@
     @Test
     public void addRemoveTetherClient() throws Exception {
         final BpfCoordinator coordinator = makeBpfCoordinator();
-        final IpServer ipServer = makeAndStartIpServer(DOWNSTREAM_IFACE, coordinator);
         final int myIfindex = DOWNSTREAM_IFINDEX;
         final int notMyIfindex = myIfindex - 1;
 
@@ -3089,33 +3000,36 @@
         final InetAddress neighLL = InetAddresses.parseNumericAddress("169.254.0.1");
         final InetAddress neighMC = InetAddresses.parseNumericAddress("224.0.0.1");
 
+        dispatchIpv6UpstreamChanged(
+                coordinator, mIpServer, UPSTREAM_IFINDEX, UPSTREAM_IFACE, UPSTREAM_PREFIXES);
+
         // Events on other interfaces are ignored.
         recvNewNeigh(notMyIfindex, neighA, NUD_REACHABLE, MAC_A);
-        assertNull(mTetherClients.get(ipServer));
+        assertNull(mTetherClients.get(mIpServer));
 
         // Events on this interface are received and sent to BpfCoordinator.
         recvNewNeigh(myIfindex, neighA, NUD_REACHABLE, MAC_A);
-        assertClientInfoExists(ipServer,
+        assertClientInfoExists(mIpServer,
                 new ClientInfo(myIfindex, DOWNSTREAM_MAC, (Inet4Address) neighA, MAC_A));
 
         recvNewNeigh(myIfindex, neighB, NUD_REACHABLE, MAC_B);
-        assertClientInfoExists(ipServer,
+        assertClientInfoExists(mIpServer,
                 new ClientInfo(myIfindex, DOWNSTREAM_MAC, (Inet4Address) neighB, MAC_B));
 
         // Link-local and multicast neighbors are ignored.
         recvNewNeigh(myIfindex, neighLL, NUD_REACHABLE, MAC_A);
-        assertClientInfoDoesNotExist(ipServer, (Inet4Address) neighLL);
+        assertClientInfoDoesNotExist(mIpServer, (Inet4Address) neighLL);
         recvNewNeigh(myIfindex, neighMC, NUD_REACHABLE, MAC_A);
-        assertClientInfoDoesNotExist(ipServer, (Inet4Address) neighMC);
+        assertClientInfoDoesNotExist(mIpServer, (Inet4Address) neighMC);
 
         // A neighbor that is no longer valid causes the client to be removed.
         // NUD_FAILED events do not have a MAC address.
         recvNewNeigh(myIfindex, neighA, NUD_FAILED, null);
-        assertClientInfoDoesNotExist(ipServer, (Inet4Address) neighA);
+        assertClientInfoDoesNotExist(mIpServer, (Inet4Address) neighA);
 
         // A neighbor that is deleted causes the client to be removed.
         recvDelNeigh(myIfindex, neighB, NUD_STALE, MAC_B);
         // When last client information is deleted, IpServer will be removed from mTetherClients
-        assertNull(mTetherClients.get(ipServer));
+        assertNull(mTetherClients.get(mIpServer));
     }
 }
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
index 750bfce..9f430af 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -3622,6 +3622,42 @@
                 InetAddresses.parseNumericAddress(ifaceConfig.ipv4Addr), ifaceConfig.prefixLength);
         assertFalse(sapPrefix.equals(lohsPrefix));
     }
+
+    @Test
+    public void testWifiTetheringWhenP2pActive() throws Exception {
+        initTetheringOnTestThread();
+        // Enable wifi P2P.
+        sendWifiP2pConnectionChanged(true, true, TEST_P2P_IFNAME);
+        verifyInterfaceServingModeStarted(TEST_P2P_IFNAME);
+        verifyTetheringBroadcast(TEST_P2P_IFNAME, EXTRA_AVAILABLE_TETHER);
+        verifyTetheringBroadcast(TEST_P2P_IFNAME, EXTRA_ACTIVE_LOCAL_ONLY);
+        verify(mUpstreamNetworkMonitor).startObserveAllNetworks();
+        // Verify never enable upstream if only P2P active.
+        verify(mUpstreamNetworkMonitor, never()).setTryCell(true);
+        assertEquals(TETHER_ERROR_NO_ERROR, mTethering.getLastErrorForTest(TEST_P2P_IFNAME));
+
+        when(mWifiManager.startTetheredHotspot(any())).thenReturn(true);
+        // Emulate pressing the WiFi tethering button.
+        mTethering.startTethering(createTetheringRequestParcel(TETHERING_WIFI), TEST_CALLER_PKG,
+                null);
+        mLooper.dispatchAll();
+        verify(mWifiManager).startTetheredHotspot(null);
+        verifyNoMoreInteractions(mWifiManager);
+
+        mTethering.interfaceStatusChanged(TEST_WLAN_IFNAME, true);
+        sendWifiApStateChanged(WIFI_AP_STATE_ENABLED, TEST_WLAN_IFNAME, IFACE_IP_MODE_TETHERED);
+
+        verifyTetheringBroadcast(TEST_WLAN_IFNAME, EXTRA_AVAILABLE_TETHER);
+        verify(mWifiManager).updateInterfaceIpState(
+                TEST_WLAN_IFNAME, WifiManager.IFACE_IP_MODE_UNSPECIFIED);
+
+        verify(mWifiManager).updateInterfaceIpState(TEST_WLAN_IFNAME, IFACE_IP_MODE_TETHERED);
+        verifyNoMoreInteractions(mWifiManager);
+        verifyTetheringBroadcast(TEST_WLAN_IFNAME, EXTRA_ACTIVE_TETHER);
+
+        verify(mUpstreamNetworkMonitor).setTryCell(true);
+    }
+
     // TODO: Test that a request for hotspot mode doesn't interfere with an
     // already operating tethering mode interface.
 }
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/util/StateMachineShimTest.kt b/Tethering/tests/unit/src/com/android/networkstack/tethering/util/StateMachineShimTest.kt
index f8e98e3..2417385 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/util/StateMachineShimTest.kt
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/util/StateMachineShimTest.kt
@@ -19,9 +19,10 @@
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SmallTest
 import com.android.internal.util.State
+import com.android.net.module.util.SyncStateMachine
+import com.android.net.module.util.SyncStateMachine.StateInfo
 import com.android.networkstack.tethering.util.StateMachineShim.AsyncStateMachine
 import com.android.networkstack.tethering.util.StateMachineShim.Dependencies
-import com.android.networkstack.tethering.util.SyncStateMachine.StateInfo
 import kotlin.test.assertFailsWith
 import org.junit.Test
 import org.junit.runner.RunWith
diff --git a/bpf_progs/Android.bp b/bpf_progs/Android.bp
index 674cd98..1958aa8 100644
--- a/bpf_progs/Android.bp
+++ b/bpf_progs/Android.bp
@@ -94,13 +94,13 @@
 }
 
 bpf {
-    name: "offload@btf.o",
-    srcs: ["offload@btf.c"],
+    name: "offload@mainline.o",
+    srcs: ["offload@mainline.c"],
     btf: true,
     cflags: [
         "-Wall",
         "-Werror",
-        "-DBTF",
+        "-DMAINLINE",
     ],
 }
 
@@ -114,13 +114,13 @@
 }
 
 bpf {
-    name: "test@btf.o",
-    srcs: ["test@btf.c"],
+    name: "test@mainline.o",
+    srcs: ["test@mainline.c"],
     btf: true,
     cflags: [
         "-Wall",
         "-Werror",
-        "-DBTF",
+        "-DMAINLINE",
     ],
 }
 
diff --git a/bpf_progs/block.c b/bpf_progs/block.c
index 0a2b0b8..152dda6 100644
--- a/bpf_progs/block.c
+++ b/bpf_progs/block.c
@@ -19,8 +19,8 @@
 #include <netinet/in.h>
 #include <stdint.h>
 
-// The resulting .o needs to load on the Android T bpfloader
-#define BPFLOADER_MIN_VER BPFLOADER_T_VERSION
+// The resulting .o needs to load on Android T+
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
 
 #include "bpf_helpers.h"
 
diff --git a/bpf_progs/bpf_net_helpers.h b/bpf_progs/bpf_net_helpers.h
index f3c7de5..1511ee5 100644
--- a/bpf_progs/bpf_net_helpers.h
+++ b/bpf_progs/bpf_net_helpers.h
@@ -35,6 +35,7 @@
 
 // this returns 0 iff skb->sk is NULL
 static uint64_t (*bpf_get_socket_cookie)(struct __sk_buff* skb) = (void*)BPF_FUNC_get_socket_cookie;
+static uint64_t (*bpf_get_sk_cookie)(struct bpf_sock* sk) = (void*)BPF_FUNC_get_socket_cookie;
 
 static uint32_t (*bpf_get_socket_uid)(struct __sk_buff* skb) = (void*)BPF_FUNC_get_socket_uid;
 
diff --git a/bpf_progs/clatd.c b/bpf_progs/clatd.c
index addb02f..f83e5ae 100644
--- a/bpf_progs/clatd.c
+++ b/bpf_progs/clatd.c
@@ -30,8 +30,8 @@
 #define __kernel_udphdr udphdr
 #include <linux/udp.h>
 
-// The resulting .o needs to load on the Android T bpfloader
-#define BPFLOADER_MIN_VER BPFLOADER_T_VERSION
+// The resulting .o needs to load on Android T+
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
 
 #include "bpf_helpers.h"
 #include "bpf_net_helpers.h"
@@ -265,6 +265,10 @@
         *(struct iphdr*)data = ip;
     }
 
+    // Count successfully translated packet
+    __sync_fetch_and_add(&v->packets, 1);
+    __sync_fetch_and_add(&v->bytes, skb->len - l2_header_size);
+
     // Redirect, possibly back to same interface, so tcpdump sees packet twice.
     if (v->oif) return bpf_redirect(v->oif, BPF_F_INGRESS);
 
@@ -416,6 +420,10 @@
     // Copy over the new ipv6 header without an ethernet header.
     *(struct ipv6hdr*)data = ip6;
 
+    // Count successfully translated packet
+    __sync_fetch_and_add(&v->packets, 1);
+    __sync_fetch_and_add(&v->bytes, skb->len);
+
     // Redirect to non v4-* interface.  Tcpdump only sees packet after this redirect.
     return bpf_redirect(v->oif, 0 /* this is effectively BPF_F_EGRESS */);
 }
diff --git a/bpf_progs/clatd.h b/bpf_progs/clatd.h
index b5f1cdc..a75798f 100644
--- a/bpf_progs/clatd.h
+++ b/bpf_progs/clatd.h
@@ -39,8 +39,10 @@
 typedef struct {
     uint32_t oif;           // The output interface to redirect to (0 means don't redirect)
     struct in_addr local4;  // The destination IPv4 address
+    uint64_t packets;       // Count of translated gso (large) packets
+    uint64_t bytes;         // Sum of post-translation skb->len
 } ClatIngress6Value;
-STRUCT_SIZE(ClatIngress6Value, 4 + 4);  // 8
+STRUCT_SIZE(ClatIngress6Value, 4 + 4 + 8 + 8);  // 24
 
 typedef struct {
     uint32_t iif;           // The input interface index
@@ -54,7 +56,9 @@
     struct in6_addr pfx96;   // The destination /96 nat64 prefix, bottom 32 bits must be 0
     bool oifIsEthernet;      // Whether the output interface requires ethernet header
     uint8_t pad[3];
+    uint64_t packets;       // Count of translated gso (large) packets
+    uint64_t bytes;         // Sum of post-translation skb->len
 } ClatEgress4Value;
-STRUCT_SIZE(ClatEgress4Value, 4 + 2 * 16 + 1 + 3);  // 40
+STRUCT_SIZE(ClatEgress4Value, 4 + 2 * 16 + 1 + 3 + 8 + 8);  // 56
 
 #undef STRUCT_SIZE
diff --git a/bpf_progs/dscpPolicy.c b/bpf_progs/dscpPolicy.c
index e845a69..ed114e4 100644
--- a/bpf_progs/dscpPolicy.c
+++ b/bpf_progs/dscpPolicy.c
@@ -27,8 +27,8 @@
 #include <stdint.h>
 #include <string.h>
 
-// The resulting .o needs to load on the Android T bpfloader
-#define BPFLOADER_MIN_VER BPFLOADER_T_VERSION
+// The resulting .o needs to load on Android T+
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
 
 #include "bpf_helpers.h"
 #include "dscpPolicy.h"
diff --git a/bpf_progs/netd.c b/bpf_progs/netd.c
index 5e401aa..b3cde45 100644
--- a/bpf_progs/netd.c
+++ b/bpf_progs/netd.c
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-// The resulting .o needs to load on the Android T bpfloader
-#define BPFLOADER_MIN_VER BPFLOADER_T_VERSION
+// The resulting .o needs to load on Android T+
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
 
 #include <bpf_helpers.h>
 #include <linux/bpf.h>
@@ -97,19 +97,22 @@
 DEFINE_BPF_MAP_NO_NETD(ingress_discard_map, HASH, IngressDiscardKey, IngressDiscardValue,
                        INGRESS_DISCARD_MAP_SIZE)
 
+DEFINE_BPF_MAP_RW_NETD(lock_array_test_map, ARRAY, uint32_t, bool, 1)
+DEFINE_BPF_MAP_RW_NETD(lock_hash_test_map, HASH, uint32_t, bool, 1)
+
 /* never actually used from ebpf */
 DEFINE_BPF_MAP_NO_NETD(iface_index_name_map, HASH, uint32_t, IfaceValue, IFACE_INDEX_NAME_MAP_SIZE)
 
 // A single-element configuration array, packet tracing is enabled when 'true'.
 DEFINE_BPF_MAP_EXT(packet_trace_enabled_map, ARRAY, uint32_t, bool, 1,
                    AID_ROOT, AID_SYSTEM, 0060, "fs_bpf_net_shared", "", PRIVATE,
-                   BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, LOAD_ON_ENG,
+                   BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, LOAD_ON_ENG,
                    LOAD_ON_USER, LOAD_ON_USERDEBUG)
 
 // A ring buffer on which packet information is pushed.
 DEFINE_BPF_RINGBUF_EXT(packet_trace_ringbuf, PacketTrace, PACKET_TRACE_BUF_SIZE,
                        AID_ROOT, AID_SYSTEM, 0060, "fs_bpf_net_shared", "", PRIVATE,
-                       BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, LOAD_ON_ENG,
+                       BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, LOAD_ON_ENG,
                        LOAD_ON_USER, LOAD_ON_USERDEBUG);
 
 DEFINE_BPF_MAP_RO_NETD(data_saver_enabled_map, ARRAY, uint32_t, bool,
@@ -139,6 +142,11 @@
 #define DEFINE_NETD_BPF_PROG(SECTION_NAME, prog_uid, prog_gid, the_prog) \
     DEFINE_NETD_BPF_PROG_KVER(SECTION_NAME, prog_uid, prog_gid, the_prog, KVER_NONE)
 
+#define DEFINE_NETD_V_BPF_PROG_KVER(SECTION_NAME, prog_uid, prog_gid, the_prog, minKV)            \
+    DEFINE_BPF_PROG_EXT(SECTION_NAME, prog_uid, prog_gid, the_prog, minKV,                        \
+                        KVER_INF, BPFLOADER_MAINLINE_V_VERSION, BPFLOADER_MAX_VER, MANDATORY,     \
+                        "fs_bpf_netd_readonly", "", LOAD_ON_ENG, LOAD_ON_USER, LOAD_ON_USERDEBUG)
+
 // programs that only need to be usable by the system server
 #define DEFINE_SYS_BPF_PROG(SECTION_NAME, prog_uid, prog_gid, the_prog) \
     DEFINE_BPF_PROG_EXT(SECTION_NAME, prog_uid, prog_gid, the_prog, KVER_NONE, KVER_INF,  \
@@ -407,6 +415,9 @@
 
     BpfConfig enabledRules = getConfig(UID_RULES_CONFIGURATION_KEY);
 
+    // BACKGROUND match does not apply to loopback traffic
+    if (skb->ifindex == 1) enabledRules &= ~BACKGROUND_MATCH;
+
     UidOwnerValue* uidEntry = bpf_uid_owner_map_lookup_elem(&uid);
     uint32_t uidRules = uidEntry ? uidEntry->rule : 0;
     uint32_t allowed_iif = uidEntry ? uidEntry->iif : 0;
@@ -516,7 +527,7 @@
 // This program is optional, and enables tracing on Android U+, 5.8+ on user builds.
 DEFINE_BPF_PROG_EXT("cgroupskb/ingress/stats$trace_user", AID_ROOT, AID_SYSTEM,
                     bpf_cgroup_ingress_trace_user, KVER_5_8, KVER_INF,
-                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, OPTIONAL,
+                    BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, OPTIONAL,
                     "fs_bpf_netd_readonly", "",
                     IGNORE_ON_ENG, LOAD_ON_USER, IGNORE_ON_USERDEBUG)
 (struct __sk_buff* skb) {
@@ -526,7 +537,7 @@
 // This program is required, and enables tracing on Android U+, 5.8+, userdebug/eng.
 DEFINE_BPF_PROG_EXT("cgroupskb/ingress/stats$trace", AID_ROOT, AID_SYSTEM,
                     bpf_cgroup_ingress_trace, KVER_5_8, KVER_INF,
-                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, MANDATORY,
+                    BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, MANDATORY,
                     "fs_bpf_netd_readonly", "",
                     LOAD_ON_ENG, IGNORE_ON_USER, LOAD_ON_USERDEBUG)
 (struct __sk_buff* skb) {
@@ -548,7 +559,7 @@
 // This program is optional, and enables tracing on Android U+, 5.8+ on user builds.
 DEFINE_BPF_PROG_EXT("cgroupskb/egress/stats$trace_user", AID_ROOT, AID_SYSTEM,
                     bpf_cgroup_egress_trace_user, KVER_5_8, KVER_INF,
-                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, OPTIONAL,
+                    BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, OPTIONAL,
                     "fs_bpf_netd_readonly", "",
                     IGNORE_ON_ENG, LOAD_ON_USER, IGNORE_ON_USERDEBUG)
 (struct __sk_buff* skb) {
@@ -558,7 +569,7 @@
 // This program is required, and enables tracing on Android U+, 5.8+, userdebug/eng.
 DEFINE_BPF_PROG_EXT("cgroupskb/egress/stats$trace", AID_ROOT, AID_SYSTEM,
                     bpf_cgroup_egress_trace, KVER_5_8, KVER_INF,
-                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, MANDATORY,
+                    BPFLOADER_MAINLINE_U_VERSION, BPFLOADER_MAX_VER, MANDATORY,
                     "fs_bpf_netd_readonly", "",
                     LOAD_ON_ENG, IGNORE_ON_USER, LOAD_ON_USERDEBUG)
 (struct __sk_buff* skb) {
@@ -644,7 +655,8 @@
 (struct __sk_buff* skb) {
     uint32_t sock_uid = bpf_get_socket_uid(skb);
     UidOwnerValue* denylistMatch = bpf_uid_owner_map_lookup_elem(&sock_uid);
-    if (denylistMatch) return denylistMatch->rule & PENALTY_BOX_MATCH ? BPF_MATCH : BPF_NOMATCH;
+    uint32_t penalty_box = PENALTY_BOX_USER_MATCH | PENALTY_BOX_ADMIN_MATCH;
+    if (denylistMatch) return denylistMatch->rule & penalty_box ? BPF_MATCH : BPF_NOMATCH;
     return BPF_NOMATCH;
 }
 
@@ -662,13 +674,86 @@
     return permissions ? *permissions : BPF_PERMISSION_INTERNET;
 }
 
-DEFINE_NETD_BPF_PROG_KVER("cgroupsock/inet/create", AID_ROOT, AID_ROOT, inet_socket_create,
+DEFINE_NETD_BPF_PROG_KVER("cgroupsock/inet_create", AID_ROOT, AID_ROOT, inet_socket_create,
                           KVER_4_14)
 (struct bpf_sock* sk) {
     // A return value of 1 means allow, everything else means deny.
     return (get_app_permissions() & BPF_PERMISSION_INTERNET) ? 1 : 0;
 }
 
+DEFINE_NETD_V_BPF_PROG_KVER("cgroupsockrelease/inet_release", AID_ROOT, AID_ROOT,
+                            inet_socket_release, KVER_5_10)
+(struct bpf_sock* sk) {
+    uint64_t cookie = bpf_get_sk_cookie(sk);
+    if (cookie) bpf_cookie_tag_map_delete_elem(&cookie);
+
+    return 1;
+}
+
+static __always_inline inline int check_localhost(struct bpf_sock_addr *ctx) {
+    // See include/uapi/linux/bpf.h:
+    //
+    // struct bpf_sock_addr {
+    //   __u32 user_family;	//     R: 4 byte
+    //   __u32 user_ip4;	// BE, R: 1,2,4-byte,   W: 4-byte
+    //   __u32 user_ip6[4];	// BE, R: 1,2,4,8-byte, W: 4,8-byte
+    //   __u32 user_port;	// BE, R: 1,2,4-byte,   W: 4-byte
+    //   __u32 family;		//     R: 4 byte
+    //   __u32 type;		//     R: 4 byte
+    //   __u32 protocol;	//     R: 4 byte
+    //   __u32 msg_src_ip4;	// BE, R: 1,2,4-byte,   W: 4-byte
+    //   __u32 msg_src_ip6[4];	// BE, R: 1,2,4,8-byte, W: 4,8-byte
+    //   __bpf_md_ptr(struct bpf_sock *, sk);
+    // };
+    return 1;
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("connect4/inet4_connect", AID_ROOT, AID_ROOT, inet4_connect, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("connect6/inet6_connect", AID_ROOT, AID_ROOT, inet6_connect, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("recvmsg4/udp4_recvmsg", AID_ROOT, AID_ROOT, udp4_recvmsg, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("recvmsg6/udp6_recvmsg", AID_ROOT, AID_ROOT, udp6_recvmsg, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("sendmsg4/udp4_sendmsg", AID_ROOT, AID_ROOT, udp4_sendmsg, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("sendmsg6/udp6_sendmsg", AID_ROOT, AID_ROOT, udp6_sendmsg, KVER_4_14)
+(struct bpf_sock_addr *ctx) {
+    return check_localhost(ctx);
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("getsockopt/prog", AID_ROOT, AID_ROOT, getsockopt_prog, KVER_5_4)
+(struct bpf_sockopt *ctx) {
+    // Tell kernel to return 'original' kernel reply (instead of the bpf modified buffer)
+    // This is important if the answer is larger than PAGE_SIZE (max size this bpf hook can provide)
+    ctx->optlen = 0;
+    return 1; // ALLOW
+}
+
+DEFINE_NETD_V_BPF_PROG_KVER("setsockopt/prog", AID_ROOT, AID_ROOT, setsockopt_prog, KVER_5_4)
+(struct bpf_sockopt *ctx) {
+    // Tell kernel to use/process original buffer provided by userspace.
+    // This is important if it is larger than PAGE_SIZE (max size this bpf hook can handle).
+    ctx->optlen = 0;
+    return 1; // ALLOW
+}
+
 LICENSE("Apache 2.0");
 CRITICAL("Connectivity and netd");
 DISABLE_BTF_ON_USER_BUILDS();
diff --git a/bpf_progs/netd.h b/bpf_progs/netd.h
index 098147f..4877a4b 100644
--- a/bpf_progs/netd.h
+++ b/bpf_progs/netd.h
@@ -155,7 +155,16 @@
 ASSERT_STRING_EQUAL(XT_BPF_ALLOWLIST_PROG_PATH, BPF_NETD_PATH "prog_netd_skfilter_allowlist_xtbpf");
 ASSERT_STRING_EQUAL(XT_BPF_DENYLIST_PROG_PATH,  BPF_NETD_PATH "prog_netd_skfilter_denylist_xtbpf");
 
-#define CGROUP_SOCKET_PROG_PATH BPF_NETD_PATH "prog_netd_cgroupsock_inet_create"
+#define CGROUP_INET_CREATE_PROG_PATH BPF_NETD_PATH "prog_netd_cgroupsock_inet_create"
+#define CGROUP_INET_RELEASE_PROG_PATH BPF_NETD_PATH "prog_netd_cgroupsockrelease_inet_release"
+#define CGROUP_CONNECT4_PROG_PATH BPF_NETD_PATH "prog_netd_connect4_inet4_connect"
+#define CGROUP_CONNECT6_PROG_PATH BPF_NETD_PATH "prog_netd_connect6_inet6_connect"
+#define CGROUP_UDP4_RECVMSG_PROG_PATH BPF_NETD_PATH "prog_netd_recvmsg4_udp4_recvmsg"
+#define CGROUP_UDP6_RECVMSG_PROG_PATH BPF_NETD_PATH "prog_netd_recvmsg6_udp6_recvmsg"
+#define CGROUP_UDP4_SENDMSG_PROG_PATH BPF_NETD_PATH "prog_netd_sendmsg4_udp4_sendmsg"
+#define CGROUP_UDP6_SENDMSG_PROG_PATH BPF_NETD_PATH "prog_netd_sendmsg6_udp6_sendmsg"
+#define CGROUP_GETSOCKOPT_PROG_PATH BPF_NETD_PATH "prog_netd_getsockopt_prog"
+#define CGROUP_SETSOCKOPT_PROG_PATH BPF_NETD_PATH "prog_netd_setsockopt_prog"
 
 #define TC_BPF_INGRESS_ACCOUNT_PROG_NAME "prog_netd_schedact_ingress_account"
 #define TC_BPF_INGRESS_ACCOUNT_PROG_PATH BPF_NETD_PATH TC_BPF_INGRESS_ACCOUNT_PROG_NAME
@@ -181,7 +190,7 @@
 enum UidOwnerMatchType : uint32_t {
     NO_MATCH = 0,
     HAPPY_BOX_MATCH = (1 << 0),
-    PENALTY_BOX_MATCH = (1 << 1),
+    PENALTY_BOX_USER_MATCH = (1 << 1),
     DOZABLE_MATCH = (1 << 2),
     STANDBY_MATCH = (1 << 3),
     POWERSAVE_MATCH = (1 << 4),
@@ -192,7 +201,8 @@
     OEM_DENY_1_MATCH = (1 << 9),
     OEM_DENY_2_MATCH = (1 << 10),
     OEM_DENY_3_MATCH = (1 << 11),
-    BACKGROUND_MATCH = (1 << 12)
+    BACKGROUND_MATCH = (1 << 12),
+    PENALTY_BOX_ADMIN_MATCH = (1 << 13),
 };
 // LINT.ThenChange(../framework/src/android/net/BpfNetMapsConstants.java)
 
@@ -260,5 +270,5 @@
 static inline bool is_system_uid(uint32_t uid) {
     // MIN_SYSTEM_UID is AID_ROOT == 0, so uint32_t is *always* >= 0
     // MAX_SYSTEM_UID is AID_NOBODY == 9999, while AID_APP_START == 10000
-    return (uid < AID_APP_START);
+    return ((uid % AID_USER_OFFSET) < AID_APP_START);
 }
diff --git a/bpf_progs/offload.c b/bpf_progs/offload.c
index 90f96a1..4f152bf 100644
--- a/bpf_progs/offload.c
+++ b/bpf_progs/offload.c
@@ -24,16 +24,16 @@
 #define __kernel_udphdr udphdr
 #include <linux/udp.h>
 
-#ifdef BTF
+#ifdef MAINLINE
 // BTF is incompatible with bpfloaders < v0.10, hence for S (v0.2) we must
 // ship a different file than for later versions, but we need bpfloader v0.25+
 // for obj@ver.o support
-#define BPFLOADER_MIN_VER BPFLOADER_OBJ_AT_VER_VERSION
-#else /* BTF */
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
+#else /* MAINLINE */
 // The resulting .o needs to load on the Android S bpfloader
 #define BPFLOADER_MIN_VER BPFLOADER_S_VERSION
-#define BPFLOADER_MAX_VER BPFLOADER_OBJ_AT_VER_VERSION
-#endif /* BTF */
+#define BPFLOADER_MAX_VER BPFLOADER_T_VERSION
+#endif /* MAINLINE */
 
 // Warning: values other than AID_ROOT don't work for map uid on BpfLoader < v0.21
 #define TETHERING_UID AID_ROOT
diff --git a/bpf_progs/offload@btf.c b/bpf_progs/offload@mainline.c
similarity index 100%
rename from bpf_progs/offload@btf.c
rename to bpf_progs/offload@mainline.c
diff --git a/bpf_progs/test.c b/bpf_progs/test.c
index 70b08b7..6a4471c 100644
--- a/bpf_progs/test.c
+++ b/bpf_progs/test.c
@@ -18,16 +18,16 @@
 #include <linux/in.h>
 #include <linux/ip.h>
 
-#ifdef BTF
+#ifdef MAINLINE
 // BTF is incompatible with bpfloaders < v0.10, hence for S (v0.2) we must
 // ship a different file than for later versions, but we need bpfloader v0.25+
 // for obj@ver.o support
-#define BPFLOADER_MIN_VER BPFLOADER_OBJ_AT_VER_VERSION
-#else /* BTF */
+#define BPFLOADER_MIN_VER BPFLOADER_MAINLINE_T_VERSION
+#else /* MAINLINE */
 // The resulting .o needs to load on the Android S bpfloader
 #define BPFLOADER_MIN_VER BPFLOADER_S_VERSION
-#define BPFLOADER_MAX_VER BPFLOADER_OBJ_AT_VER_VERSION
-#endif /* BTF */
+#define BPFLOADER_MAX_VER BPFLOADER_T_VERSION
+#endif /* MAINLINE */
 
 // Warning: values other than AID_ROOT don't work for map uid on BpfLoader < v0.21
 #define TETHERING_UID AID_ROOT
@@ -45,6 +45,10 @@
 // Used only by TetheringPrivilegedTests, not by production code.
 DEFINE_BPF_MAP_GRW(tether_downstream6_map, HASH, TetherDownstream6Key, Tether6Value, 16,
                    TETHERING_GID)
+DEFINE_BPF_MAP_GRW(tether2_downstream6_map, HASH, TetherDownstream6Key, Tether6Value, 16,
+                   TETHERING_GID)
+DEFINE_BPF_MAP_GRW(tether3_downstream6_map, HASH, TetherDownstream6Key, Tether6Value, 16,
+                   TETHERING_GID)
 // Used only by BpfBitmapTest, not by production code.
 DEFINE_BPF_MAP_GRW(bitmap, ARRAY, int, uint64_t, 2, TETHERING_GID)
 
diff --git a/bpf_progs/test@btf.c b/bpf_progs/test@mainline.c
similarity index 100%
rename from bpf_progs/test@btf.c
rename to bpf_progs/test@mainline.c
diff --git a/common/Android.bp b/common/Android.bp
index 0048a0a..5fabf41 100644
--- a/common/Android.bp
+++ b/common/Android.bp
@@ -26,7 +26,7 @@
 // as the above target may not exist
 // depending on the branch
 
-// The library requires the final artifact to contain net-utils-device-common-struct.
+// The library requires the final artifact to contain net-utils-device-common-struct-base.
 java_library {
     name: "connectivity-net-module-utils-bpf",
     srcs: [
@@ -45,7 +45,7 @@
         // For libraries which are statically linked in framework-connectivity, do not
         // statically link here because callers of this library might already have a static
         // version linked.
-        "net-utils-device-common-struct",
+        "net-utils-device-common-struct-base",
     ],
     apex_available: [
         "com.android.tethering",
diff --git a/common/FlaggedApi.bp b/common/FlaggedApi.bp
index 56625c5..21be1d3 100644
--- a/common/FlaggedApi.bp
+++ b/common/FlaggedApi.bp
@@ -17,7 +17,7 @@
 aconfig_declarations {
     name: "com.android.net.flags-aconfig",
     package: "com.android.net.flags",
-    container: "system",
+    container: "com.android.tethering",
     srcs: ["flags.aconfig"],
     visibility: ["//packages/modules/Connectivity:__subpackages__"],
 }
@@ -25,7 +25,7 @@
 aconfig_declarations {
     name: "com.android.net.thread.flags-aconfig",
     package: "com.android.net.thread.flags",
-    container: "system",
+    container: "com.android.tethering",
     srcs: ["thread_flags.aconfig"],
     visibility: ["//packages/modules/Connectivity:__subpackages__"],
 }
@@ -33,7 +33,7 @@
 aconfig_declarations {
     name: "nearby_flags",
     package: "com.android.nearby.flags",
-    container: "system",
+    container: "com.android.tethering",
     srcs: ["nearby_flags.aconfig"],
     visibility: ["//packages/modules/Connectivity:__subpackages__"],
 }
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 19b522c..b320b61 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -1,11 +1,12 @@
 package: "com.android.net.flags"
-container: "system"
+container: "com.android.tethering"
 
 # This file contains aconfig flags for FlaggedAPI annotations
 # Flags used from platform code must be in under frameworks
 
 flag {
   name: "set_data_saver_via_cm"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Set data saver through ConnectivityManager API"
   bug: "297836825"
@@ -13,6 +14,7 @@
 
 flag {
   name: "support_is_uid_networking_blocked"
+  is_exported: true
   namespace: "android_core_networking"
   description: "This flag controls whether isUidNetworkingBlocked is supported"
   bug: "297836825"
@@ -20,6 +22,7 @@
 
 flag {
   name: "basic_background_restrictions_enabled"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Block network access for apps in a low importance background state"
   bug: "304347838"
@@ -27,6 +30,7 @@
 
 flag {
   name: "ipsec_transform_state"
+  is_exported: true
   namespace: "android_core_networking_ipsec"
   description: "The flag controls the access for getIpSecTransformState and IpSecTransformState"
   bug: "308011229"
@@ -34,6 +38,7 @@
 
 flag {
   name: "tethering_request_with_soft_ap_config"
+  is_exported: true
   namespace: "android_core_networking"
   description: "The flag controls the access for the parcelable TetheringRequest with getSoftApConfiguration/setSoftApConfiguration API"
   bug: "216524590"
@@ -41,6 +46,7 @@
 
 flag {
   name: "request_restricted_wifi"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Flag for API to support requesting restricted wifi"
   bug: "315835605"
@@ -48,6 +54,7 @@
 
 flag {
   name: "net_capability_local_network"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Flag for local network capability API"
   bug: "313000440"
@@ -55,6 +62,7 @@
 
 flag {
   name: "support_transport_satellite"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Flag for satellite transport API"
   bug: "320514105"
@@ -62,6 +70,7 @@
 
 flag {
   name: "nsd_subtypes_support_enabled"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Flag for API to support nsd subtypes"
   bug: "265095929"
@@ -69,7 +78,48 @@
 
 flag {
   name: "register_nsd_offload_engine_api"
+  is_exported: true
   namespace: "android_core_networking"
   description: "Flag for API to register nsd offload engine"
   bug: "301713539"
 }
+
+flag {
+  name: "metered_network_firewall_chains"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for metered network firewall chain API"
+  bug: "332628891"
+}
+
+flag {
+  name: "blocked_reason_oem_deny_chains"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for oem deny chains blocked reasons API"
+  bug: "328732146"
+}
+
+flag {
+  name: "blocked_reason_network_restricted"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for BLOCKED_REASON_NETWORK_RESTRICTED API"
+  bug: "339559837"
+}
+
+flag {
+  name: "net_capability_not_bandwidth_constrained"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED API"
+  bug: "343823469"
+}
+
+flag {
+  name: "tethering_request_virtual"
+  is_exported: true
+  namespace: "android_core_networking"
+  description: "Flag for introducing TETHERING_VIRTUAL type"
+  bug: "340376953"
+}
diff --git a/common/nearby_flags.aconfig b/common/nearby_flags.aconfig
index b957d33..55a865b 100644
--- a/common/nearby_flags.aconfig
+++ b/common/nearby_flags.aconfig
@@ -1,8 +1,9 @@
 package: "com.android.nearby.flags"
-container: "system"
+container: "com.android.tethering"
 
 flag {
     name: "powered_off_finding"
+    is_exported: true
     namespace: "nearby"
     description: "Controls whether the Powered Off Finding feature is enabled"
     bug: "307898240"
diff --git a/common/src/com/android/net/module/util/bpf/ClatEgress4Value.java b/common/src/com/android/net/module/util/bpf/ClatEgress4Value.java
index 69fab09..71f7516 100644
--- a/common/src/com/android/net/module/util/bpf/ClatEgress4Value.java
+++ b/common/src/com/android/net/module/util/bpf/ClatEgress4Value.java
@@ -36,11 +36,24 @@
     @Field(order = 3, type = Type.U8, padding = 3)
     public final short oifIsEthernet; // Whether the output interface requires ethernet header
 
+    @Field(order = 4, type = Type.U63)
+    public final long packets; // Count of translated gso (large) packets
+
+    @Field(order = 5, type = Type.U63)
+    public final long bytes; // Sum of post-translation skb->len
+
     public ClatEgress4Value(final int oif, final Inet6Address local6, final Inet6Address pfx96,
-            final short oifIsEthernet) {
+            final short oifIsEthernet, final long packets, final long bytes) {
         this.oif = oif;
         this.local6 = local6;
         this.pfx96 = pfx96;
         this.oifIsEthernet = oifIsEthernet;
+        this.packets = packets;
+        this.bytes = bytes;
+    }
+
+    public ClatEgress4Value(final int oif, final Inet6Address local6, final Inet6Address pfx96,
+            final short oifIsEthernet) {
+        this(oif, local6, pfx96, oifIsEthernet, 0, 0);
     }
 }
diff --git a/common/src/com/android/net/module/util/bpf/ClatIngress6Value.java b/common/src/com/android/net/module/util/bpf/ClatIngress6Value.java
index fb81caa..25f737b 100644
--- a/common/src/com/android/net/module/util/bpf/ClatIngress6Value.java
+++ b/common/src/com/android/net/module/util/bpf/ClatIngress6Value.java
@@ -30,8 +30,21 @@
     @Field(order = 1, type = Type.Ipv4Address)
     public final Inet4Address local4; // The destination IPv4 address
 
-    public ClatIngress6Value(final int oif, final Inet4Address local4) {
+    @Field(order = 2, type = Type.U63)
+    public final long packets; // Count of translated gso (large) packets
+
+    @Field(order = 3, type = Type.U63)
+    public final long bytes; // Sum of post-translation skb->len
+
+    public ClatIngress6Value(final int oif, final Inet4Address local4, final long packets,
+            final long bytes) {
         this.oif = oif;
         this.local4 = local4;
+        this.packets = packets;
+        this.bytes = bytes;
+    }
+
+    public ClatIngress6Value(final int oif, final Inet4Address local4) {
+        this(oif, local4, 0, 0);
     }
 }
diff --git a/common/thread_flags.aconfig b/common/thread_flags.aconfig
index 09595a6..43acd1b 100644
--- a/common/thread_flags.aconfig
+++ b/common/thread_flags.aconfig
@@ -1,8 +1,9 @@
 package: "com.android.net.thread.flags"
-container: "system"
+container: "com.android.tethering"
 
 flag {
     name: "thread_enabled"
+    is_exported: true
     namespace: "thread_network"
     description: "Controls whether the Android Thread feature is enabled"
     bug: "301473012"
diff --git a/framework-t/Android.bp b/framework-t/Android.bp
index bc919ac..f076f5b 100644
--- a/framework-t/Android.bp
+++ b/framework-t/Android.bp
@@ -201,6 +201,9 @@
         "com.android.net.thread.flags-aconfig",
         "nearby_flags",
     ],
+    lint: {
+        baseline_filename: "lint-baseline.xml",
+    },
 }
 
 // This rule is not used anymore(b/268440216).
diff --git a/framework-t/lint-baseline.xml b/framework-t/lint-baseline.xml
new file mode 100644
index 0000000..4e206ed
--- /dev/null
+++ b/framework-t/lint-baseline.xml
@@ -0,0 +1,1313 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<issues format="6" by="lint 8.4.0-alpha08" type="baseline" client="" dependencies="true" name="" variant="all" version="8.4.0-alpha08">
+
+    <issue
+        id="FlaggedApi"
+        message="Field `SERVICE_NAME` is a flagged API and should be inside an `if (ThreadNetworkFlags.threadEnabled())` check (or annotate the surrounding method `registerServiceWrappers` with `@FlaggedApi(ThreadNetworkFlags.FLAG_THREAD_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                ThreadNetworkManager.SERVICE_NAME,"
+        errorLine2="                                     ~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/ConnectivityFrameworkInitializerTiramisu.java"
+            line="101"
+            column="38"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Class `ThreadNetworkManager` is a flagged API and should be inside an `if (ThreadNetworkFlags.threadEnabled())` check (or annotate the surrounding method `registerServiceWrappers` with `@FlaggedApi(ThreadNetworkFlags.FLAG_THREAD_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                ThreadNetworkManager.class,"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/ConnectivityFrameworkInitializerTiramisu.java"
+            line="102"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `ThreadNetworkManager()` is a flagged API and should be inside an `if (ThreadNetworkFlags.threadEnabled())` check (or annotate the surrounding method `registerServiceWrappers` with `@FlaggedApi(ThreadNetworkFlags.FLAG_THREAD_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                    return new ThreadNetworkManager(context, managerService);"
+        errorLine2="                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/ConnectivityFrameworkInitializerTiramisu.java"
+            line="106"
+            column="28"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="529"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="573"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="605"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="This is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `handleMessage` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                    final String s = getNsdServiceInfoType((DiscoveryRequest) obj);"
+        errorLine2="                                                            ~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1076"
+            column="61"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `getServiceType()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `getNsdServiceInfoType` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="        return r.getServiceType();"
+        errorLine2="               ~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1236"
+            column="16"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `Builder()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="        DiscoveryRequest request = new DiscoveryRequest.Builder(protocolType, serviceType)"
+        errorLine2="                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1477"
+            column="36"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `build()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="        DiscoveryRequest request = new DiscoveryRequest.Builder(protocolType, serviceType)"
+        errorLine2="                                   ^">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1477"
+            column="36"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `setNetwork()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="        DiscoveryRequest request = new DiscoveryRequest.Builder(protocolType, serviceType)"
+        errorLine2="                                   ^">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1477"
+            column="36"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `discoverServices()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="        discoverServices(request, executor, listener);"
+        errorLine2="        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1479"
+            column="9"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `Builder()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                new DiscoveryRequest.Builder(protocolType, serviceType).build();"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/NsdManager.java"
+            line="1566"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `build()` is a flagged API and should be inside an `if (Flags.nsdSubtypesSupportEnabled())` check (or annotate the surrounding method `discoverServices` with `@FlaggedApi(Flags.NSD_SUBTYPES_SUPPORT_ENABLED) to transfer requirement to caller`)"
+        errorLine1="                new DiscoveryRequest.Builder(protocolType, serviceType).build();"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
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+    <issue
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+    <issue
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+    <issue
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+    <issue
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
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+            line="43"
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+    <issue
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+    <issue
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+            line="43"
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+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
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+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
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+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
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+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+</issues>
diff --git a/framework-t/src/android/app/usage/NetworkStatsManager.java b/framework-t/src/android/app/usage/NetworkStatsManager.java
index 7fa0661..18c839f 100644
--- a/framework-t/src/android/app/usage/NetworkStatsManager.java
+++ b/framework-t/src/android/app/usage/NetworkStatsManager.java
@@ -752,8 +752,8 @@
     /**
      * Query realtime mobile network usage statistics.
      *
-     * Return a snapshot of current UID network statistics, as it applies
-     * to the mobile radios of the device. The snapshot will include any
+     * Return a snapshot of current UID network statistics for both cellular and satellite (which
+     * also uses same mobile radio as cellular) when called. The snapshot will include any
      * tethering traffic, video calling data usage and count of
      * network operations set by {@link TrafficStats#incrementOperationCount}
      * made over a mobile radio.
diff --git a/framework-t/src/android/net/EthernetManager.java b/framework-t/src/android/net/EthernetManager.java
index b8070f0..719f60d 100644
--- a/framework-t/src/android/net/EthernetManager.java
+++ b/framework-t/src/android/net/EthernetManager.java
@@ -642,7 +642,14 @@
     }
 
     /**
-     * Listen to changes in the state of ethernet.
+     * Register a IntConsumer to be called back on ethernet state changes.
+     *
+     * <p>{@link IntConsumer#accept} with the current ethernet state will be triggered immediately
+     * upon adding a listener. The same callback is invoked on Ethernet state change, i.e. when
+     * calling {@link #setEthernetEnabled}.
+     * <p>The reported state is represented by:
+     * {@link #ETHERNET_STATE_DISABLED}: ethernet is now disabled.
+     * {@link #ETHERNET_STATE_ENABLED}: ethernet is now enabled.
      *
      * @param executor to run callbacks on.
      * @param listener to listen ethernet state changed.
diff --git a/framework-t/src/android/net/INetworkStatsService.aidl b/framework-t/src/android/net/INetworkStatsService.aidl
index c86f7fd..7f0c1fe 100644
--- a/framework-t/src/android/net/INetworkStatsService.aidl
+++ b/framework-t/src/android/net/INetworkStatsService.aidl
@@ -101,4 +101,7 @@
      * Note that invocation of any interface will be sent to all providers.
      */
      void setStatsProviderWarningAndLimitAsync(String iface, long warning, long limit);
+
+     /** Clear TrafficStats rate-limit caches. */
+     void clearTrafficStatsRateLimitCaches();
 }
diff --git a/framework-t/src/android/net/IpSecTransform.java b/framework-t/src/android/net/IpSecTransform.java
index 4e10a96..70c9bc8 100644
--- a/framework-t/src/android/net/IpSecTransform.java
+++ b/framework-t/src/android/net/IpSecTransform.java
@@ -124,7 +124,7 @@
     private IpSecTransform activate()
             throws IOException, IpSecManager.ResourceUnavailableException,
                     IpSecManager.SpiUnavailableException {
-        synchronized (this) {
+        synchronized (mLock) {
             try {
                 IpSecTransformResponse result = getIpSecManager(mContext).createTransform(
                         mConfig, new Binder(), mContext.getOpPackageName());
@@ -164,20 +164,23 @@
     public void close() {
         Log.d(TAG, "Removing Transform with Id " + mResourceId);
 
-        // Always safe to attempt cleanup
-        if (mResourceId == INVALID_RESOURCE_ID) {
-            mCloseGuard.close();
-            return;
-        }
-        try {
-            getIpSecManager(mContext).deleteTransform(mResourceId);
-        } catch (Exception e) {
-            // On close we swallow all random exceptions since failure to close is not
-            // actionable by the user.
-            Log.e(TAG, "Failed to close " + this + ", Exception=" + e);
-        } finally {
-            mResourceId = INVALID_RESOURCE_ID;
-            mCloseGuard.close();
+        synchronized(mLock) {
+            // Always safe to attempt cleanup
+            if (mResourceId == INVALID_RESOURCE_ID) {
+                mCloseGuard.close();
+                return;
+            }
+
+            try {
+                    getIpSecManager(mContext).deleteTransform(mResourceId);
+            } catch (Exception e) {
+                // On close we swallow all random exceptions since failure to close is not
+                // actionable by the user.
+                Log.e(TAG, "Failed to close " + this + ", Exception=" + e);
+            } finally {
+                mResourceId = INVALID_RESOURCE_ID;
+                mCloseGuard.close();
+            }
         }
     }
 
@@ -196,14 +199,17 @@
     }
 
     private final IpSecConfig mConfig;
-    private int mResourceId;
+    private final Object mLock = new Object();
+    private int mResourceId; // Partly guarded by mLock to ensure basic safety, not correctness
     private final Context mContext;
     private final CloseGuard mCloseGuard = CloseGuard.get();
 
     /** @hide */
     @VisibleForTesting
     public int getResourceId() {
-        return mResourceId;
+        synchronized(mLock) {
+            return mResourceId;
+        }
     }
 
     /**
@@ -224,8 +230,10 @@
         // TODO: Consider adding check to prevent DDoS attack.
 
         try {
-            final IpSecTransformState ipSecTransformState =
-                    getIpSecManager(mContext).getTransformState(mResourceId);
+            IpSecTransformState ipSecTransformState;
+            synchronized(mLock) {
+                ipSecTransformState = getIpSecManager(mContext).getTransformState(mResourceId);
+            }
             executor.execute(
                     () -> {
                         callback.onResult(ipSecTransformState);
diff --git a/framework-t/src/android/net/TrafficStats.java b/framework-t/src/android/net/TrafficStats.java
index a69b38d..77c8001 100644
--- a/framework-t/src/android/net/TrafficStats.java
+++ b/framework-t/src/android/net/TrafficStats.java
@@ -19,6 +19,7 @@
 import static android.annotation.SystemApi.Client.MODULE_LIBRARIES;
 
 import android.annotation.NonNull;
+import android.annotation.RequiresPermission;
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
 import android.annotation.TestApi;
@@ -692,6 +693,27 @@
         return UNSUPPORTED;
     }
 
+    /** Clear TrafficStats rate-limit caches.
+     *
+     * This is mainly for {@link com.android.server.net.NetworkStatsService} to
+     * clear rate-limit cache to avoid caching for TrafficStats API results.
+     * Tests might get stale values after generating network traffic, which
+     * generally need to wait for cache expiry to get updated values.
+     *
+     * @hide
+     */
+    @RequiresPermission(anyOf = {
+            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
+            android.Manifest.permission.NETWORK_STACK,
+            android.Manifest.permission.NETWORK_SETTINGS})
+    public static void clearRateLimitCaches() {
+        try {
+            getStatsService().clearTrafficStatsRateLimitCaches();
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
     /**
      * Return the number of packets transmitted on the specified interface since the interface
      * was created. Statistics are measured at the network layer, so both TCP and
diff --git a/framework-t/src/android/net/nsd/AdvertisingRequest.java b/framework-t/src/android/net/nsd/AdvertisingRequest.java
index 2895b0c..6afb2d5 100644
--- a/framework-t/src/android/net/nsd/AdvertisingRequest.java
+++ b/framework-t/src/android/net/nsd/AdvertisingRequest.java
@@ -110,8 +110,9 @@
     }
 
     /**
-     * Returns the time interval that the resource records may be cached on a DNS resolver or
-     * {@code null} if not specified.
+     * Returns the time interval that the resource records may be cached on a DNS resolver.
+     *
+     * The value will be {@code null} if it's not specified with the {@link #Builder}.
      *
      * @hide
      */
@@ -161,7 +162,7 @@
         dest.writeParcelable(mServiceInfo, flags);
         dest.writeInt(mProtocolType);
         dest.writeLong(mAdvertisingConfig);
-        dest.writeLong(mTtl == null ? -1 : mTtl.getSeconds());
+        dest.writeLong(mTtl == null ? -1L : mTtl.getSeconds());
     }
 
 //    @FlaggedApi(NsdManager.Flags.ADVERTISE_REQUEST_API)
@@ -205,7 +206,9 @@
          * When registering a service, {@link NsdManager#FAILURE_BAD_PARAMETERS} will be returned
          * if {@code ttl} is smaller than 30 seconds.
          *
-         * Note: only number of seconds of {@code ttl} is used.
+         * Note: the value after the decimal point (in unit of seconds) will be discarded. For
+         * example, {@code 30} seconds will be used when {@code Duration.ofSeconds(30L, 50_000L)}
+         * is provided.
          *
          * @param ttl the maximum duration that the DNS resource records will be cached
          *
diff --git a/framework-t/src/android/net/nsd/NsdManager.java b/framework-t/src/android/net/nsd/NsdManager.java
index 1001423..b21e22a 100644
--- a/framework-t/src/android/net/nsd/NsdManager.java
+++ b/framework-t/src/android/net/nsd/NsdManager.java
@@ -389,6 +389,7 @@
     }
 
     private static final int FIRST_LISTENER_KEY = 1;
+    private static final int DNSSEC_PROTOCOL = 3;
 
     private final INsdServiceConnector mService;
     private final Context mContext;
@@ -1754,45 +1755,132 @@
         }
     }
 
+    private enum ServiceValidationType {
+        NO_SERVICE,
+        HAS_SERVICE, // A service with a positive port
+        HAS_SERVICE_ZERO_PORT, // A service with a zero port
+    }
+
+    private enum HostValidationType {
+        DEFAULT_HOST, // No host is specified so the default host will be used
+        CUSTOM_HOST, // A custom host with addresses is specified
+        CUSTOM_HOST_NO_ADDRESS, // A custom host without address is specified
+    }
+
+    private enum PublicKeyValidationType {
+        NO_KEY,
+        HAS_KEY,
+    }
+
+    /**
+     * Check if the service is valid for registration and classify it as one of {@link
+     * ServiceValidationType}.
+     */
+    private static ServiceValidationType validateService(NsdServiceInfo serviceInfo) {
+        final boolean hasServiceName = !TextUtils.isEmpty(serviceInfo.getServiceName());
+        final boolean hasServiceType = !TextUtils.isEmpty(serviceInfo.getServiceType());
+        if (!hasServiceName && !hasServiceType && serviceInfo.getPort() == 0) {
+            return ServiceValidationType.NO_SERVICE;
+        }
+        if (!hasServiceName || !hasServiceType) {
+            throw new IllegalArgumentException("The service name or the service type is missing");
+        }
+        if (serviceInfo.getPort() < 0) {
+            throw new IllegalArgumentException("Invalid port");
+        }
+        if (serviceInfo.getPort() == 0) {
+            return ServiceValidationType.HAS_SERVICE_ZERO_PORT;
+        }
+        return ServiceValidationType.HAS_SERVICE;
+    }
+
+    /**
+     * Check if the host is valid for registration and classify it as one of {@link
+     * HostValidationType}.
+     */
+    private static HostValidationType validateHost(NsdServiceInfo serviceInfo) {
+        final boolean hasHostname = !TextUtils.isEmpty(serviceInfo.getHostname());
+        final boolean hasHostAddresses = !CollectionUtils.isEmpty(serviceInfo.getHostAddresses());
+        if (!hasHostname) {
+            // Keep compatible with the legacy behavior: It's allowed to set host
+            // addresses for a service registration although the host addresses
+            // won't be registered. To register the addresses for a host, the
+            // hostname must be specified.
+            return HostValidationType.DEFAULT_HOST;
+        }
+        if (!hasHostAddresses) {
+            return HostValidationType.CUSTOM_HOST_NO_ADDRESS;
+        }
+        return HostValidationType.CUSTOM_HOST;
+    }
+
+    /**
+     * Check if the public key is valid for registration and classify it as one of {@link
+     * PublicKeyValidationType}.
+     *
+     * <p>For simplicity, it only checks if the protocol is DNSSEC and the RDATA is not fewer than 4
+     * bytes. See RFC 3445 Section 3.
+     */
+    private static PublicKeyValidationType validatePublicKey(NsdServiceInfo serviceInfo) {
+        byte[] publicKey = serviceInfo.getPublicKey();
+        if (publicKey == null) {
+            return PublicKeyValidationType.NO_KEY;
+        }
+        if (publicKey.length < 4) {
+            throw new IllegalArgumentException("The public key should be at least 4 bytes long");
+        }
+        int protocol = publicKey[2];
+        if (protocol == DNSSEC_PROTOCOL) {
+            return PublicKeyValidationType.HAS_KEY;
+        }
+        throw new IllegalArgumentException(
+                "The public key's protocol ("
+                        + protocol
+                        + ") is invalid. It should be DNSSEC_PROTOCOL (3)");
+    }
+
     /**
      * Check if the {@link NsdServiceInfo} is valid for registration.
      *
-     * The following can be registered:
-     * - A service with an optional host.
-     * - A hostname with addresses.
+     * <p>Firstly, check if service, host and public key are all valid respectively. Then check if
+     * the combination of service, host and public key is valid.
      *
-     * Note that:
-     * - When registering a service, the service name, service type and port must be specified. If
-     *   hostname is specified, the host addresses can optionally be specified.
-     * - When registering a host without a service, the addresses must be specified.
+     * <p>If the {@code serviceInfo} is invalid, throw an {@link IllegalArgumentException}
+     * describing the reason.
+     *
+     * <p>There are the invalid combinations of service, host and public key:
+     *
+     * <ul>
+     *   <li>Neither service nor host is specified.
+     *   <li>No public key is specified and the service has a zero port.
+     *   <li>The registration only contains the hostname but addresses are missing.
+     * </ul>
+     *
+     * <p>Keys are used to reserve hostnames or service names while the service/host is temporarily
+     * inactive, so registrations with a key and just a hostname or a service name are acceptable.
      *
      * @hide
      */
     public static void checkServiceInfoForRegistration(NsdServiceInfo serviceInfo) {
         Objects.requireNonNull(serviceInfo, "NsdServiceInfo cannot be null");
-        boolean hasServiceName = !TextUtils.isEmpty(serviceInfo.getServiceName());
-        boolean hasServiceType = !TextUtils.isEmpty(serviceInfo.getServiceType());
-        boolean hasHostname = !TextUtils.isEmpty(serviceInfo.getHostname());
-        boolean hasHostAddresses = !CollectionUtils.isEmpty(serviceInfo.getHostAddresses());
 
-        if (serviceInfo.getPort() < 0) {
-            throw new IllegalArgumentException("Invalid port");
+        final ServiceValidationType serviceValidation = validateService(serviceInfo);
+        final HostValidationType hostValidation = validateHost(serviceInfo);
+        final PublicKeyValidationType publicKeyValidation = validatePublicKey(serviceInfo);
+
+        if (serviceValidation == ServiceValidationType.NO_SERVICE
+                && hostValidation == HostValidationType.DEFAULT_HOST) {
+            throw new IllegalArgumentException("Nothing to register");
         }
-
-        if (hasServiceType || hasServiceName || (serviceInfo.getPort() > 0)) {
-            if (!(hasServiceType && hasServiceName && (serviceInfo.getPort() > 0))) {
-                throw new IllegalArgumentException(
-                        "The service type, service name or port is missing");
+        if (publicKeyValidation == PublicKeyValidationType.NO_KEY) {
+            if (serviceValidation == ServiceValidationType.HAS_SERVICE_ZERO_PORT) {
+                throw new IllegalArgumentException("The port is missing");
             }
-        }
-
-        if (!hasServiceType && !hasHostname) {
-            throw new IllegalArgumentException("No service or host specified in NsdServiceInfo");
-        }
-
-        if (!hasServiceType && hasHostname && !hasHostAddresses) {
-            // TODO: b/317946010 - This may be allowed when it supports registering KEY RR.
-            throw new IllegalArgumentException("No host addresses specified in NsdServiceInfo");
+            if (serviceValidation == ServiceValidationType.NO_SERVICE
+                    && hostValidation == HostValidationType.CUSTOM_HOST_NO_ADDRESS) {
+                throw new IllegalArgumentException(
+                        "The host addresses must be specified unless there is a service");
+            }
         }
     }
 }
diff --git a/framework-t/src/android/net/nsd/NsdServiceInfo.java b/framework-t/src/android/net/nsd/NsdServiceInfo.java
index f4cc2ac..d8cccb2 100644
--- a/framework-t/src/android/net/nsd/NsdServiceInfo.java
+++ b/framework-t/src/android/net/nsd/NsdServiceInfo.java
@@ -16,6 +16,8 @@
 
 package android.net.nsd;
 
+import static com.android.net.module.util.HexDump.toHexString;
+
 import android.annotation.FlaggedApi;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -35,10 +37,12 @@
 import java.nio.charset.StandardCharsets;
 import java.time.Instant;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.StringJoiner;
 
 /**
  * A class representing service information for network service discovery
@@ -66,11 +70,15 @@
     private int mPort;
 
     @Nullable
+    private byte[] mPublicKey;
+
+    @Nullable
     private Network mNetwork;
 
     private int mInterfaceIndex;
 
-    // The timestamp that all resource records associated with this service are considered invalid.
+    // The timestamp that one or more resource records associated with this service are considered
+    // invalid.
     @Nullable
     private Instant mExpirationTime;
 
@@ -172,8 +180,18 @@
         return new ArrayList<>(mHostAddresses);
     }
 
-    /** Set the host addresses */
+    /**
+     * Set the host addresses.
+     *
+     * <p>When registering hosts/services, there can only be one registration including address
+     * records for a given hostname.
+     *
+     * <p>For example, if a client registers a service with the hostname "MyHost" and the address
+     * records of 192.168.1.1 and 192.168.1.2, then other registrations for the hostname "MyHost"
+     * must not have any address record, otherwise there will be a conflict.
+     */
     public void setHostAddresses(@NonNull List<InetAddress> addresses) {
+        // TODO: b/284905335 - Notify the client when there is a conflict.
         mHostAddresses.clear();
         mHostAddresses.addAll(addresses);
     }
@@ -216,6 +234,40 @@
     }
 
     /**
+     * Set the public key RDATA to be advertised in a KEY RR (RFC 2535).
+     *
+     * <p>This is the public key of the key pair used for signing a DNS message (e.g. SRP). Clients
+     * typically don't need this information, but the KEY RR is usually published to claim the use
+     * of the DNS name so that another mDNS advertiser can't take over the ownership during a
+     * temporary power down of the original host device.
+     *
+     * <p>When the public key is set to non-null, exactly one KEY RR will be advertised for each of
+     * the service and host name if they are not null.
+     *
+     * @hide // For Thread only
+     */
+    public void setPublicKey(@Nullable byte[] publicKey) {
+        if (publicKey == null) {
+            mPublicKey = null;
+            return;
+        }
+        mPublicKey = Arrays.copyOf(publicKey, publicKey.length);
+    }
+
+    /**
+     * Get the public key RDATA in the KEY RR (RFC 2535) or {@code null} if no KEY RR exists.
+     *
+     * @hide // For Thread only
+     */
+    @Nullable
+    public byte[] getPublicKey() {
+        if (mPublicKey == null) {
+            return null;
+        }
+        return Arrays.copyOf(mPublicKey, mPublicKey.length);
+    }
+
+    /**
      * Unpack txt information from a base-64 encoded byte array.
      *
      * @param txtRecordsRawBytes The raw base64 encoded byte array.
@@ -497,7 +549,9 @@
     /**
      * Sets the timestamp after when this service is expired.
      *
-     * Note: only number of seconds of {@code expirationTime} is used.
+     * Note: the value after the decimal point (in unit of seconds) will be discarded. For
+     * example, {@code 30} seconds will be used when {@code Duration.ofSeconds(30L, 50_000L)}
+     * is provided.
      *
      * @hide
      */
@@ -538,11 +592,50 @@
                 .append(", network: ").append(mNetwork)
                 .append(", expirationTime: ").append(mExpirationTime);
 
-        byte[] txtRecord = getTxtRecord();
-        sb.append(", txtRecord: ").append(new String(txtRecord, StandardCharsets.UTF_8));
+        final StringJoiner txtJoiner =
+                new StringJoiner(", " /* delimiter */, "{" /* prefix */, "}" /* suffix */);
+
+        sb.append(", txtRecord: ");
+        for (int i = 0; i < mTxtRecord.size(); i++) {
+            txtJoiner.add(mTxtRecord.keyAt(i) + "=" + getPrintableTxtValue(mTxtRecord.valueAt(i)));
+        }
+        sb.append(txtJoiner.toString());
         return sb.toString();
     }
 
+    /**
+     * Returns printable string for {@code txtValue}.
+     *
+     * If {@code txtValue} contains non-printable ASCII characters, a HEX string with prefix "0x"
+     * will be returned. Otherwise, the ASCII string of {@code txtValue} is returned.
+     *
+     */
+    private static String getPrintableTxtValue(@Nullable byte[] txtValue) {
+        if (txtValue == null) {
+            return "(null)";
+        }
+
+        if (containsNonPrintableChars(txtValue)) {
+            return "0x" + toHexString(txtValue);
+        }
+
+        return new String(txtValue, StandardCharsets.US_ASCII);
+    }
+
+    /**
+     * Returns {@code true} if {@code txtValue} contains non-printable ASCII characters.
+     *
+     * The printable characters are in range of [32, 126].
+     */
+    private static boolean containsNonPrintableChars(byte[] txtValue) {
+        for (int i = 0; i < txtValue.length; i++) {
+            if (txtValue[i] < 32 || txtValue[i] > 126) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /** Implement the Parcelable interface */
     public int describeContents() {
         return 0;
@@ -577,6 +670,7 @@
         }
         dest.writeString(mHostname);
         dest.writeLong(mExpirationTime != null ? mExpirationTime.getEpochSecond() : -1);
+        dest.writeByteArray(mPublicKey);
     }
 
     /** Implement the Parcelable interface */
@@ -609,6 +703,7 @@
                 info.mHostname = in.readString();
                 final long seconds = in.readLong();
                 info.setExpirationTime(seconds < 0 ? null : Instant.ofEpochSecond(seconds));
+                info.mPublicKey = in.createByteArray();
                 return info;
             }
 
diff --git a/framework/Android.bp b/framework/Android.bp
index 52f2c7c..deb1c5a 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -96,6 +96,7 @@
     ],
     impl_only_static_libs: [
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
     ],
     libs: [
         "androidx.annotation_annotation",
@@ -116,7 +117,6 @@
     static_libs: [
         "httpclient_api",
         "httpclient_impl",
-        "http_client_logging",
         // Framework-connectivity-pre-jarjar is identical to framework-connectivity
         // implementation, but without the jarjar rules. However, framework-connectivity
         // is not based on framework-connectivity-pre-jarjar, it's rebuilt from source
@@ -124,6 +124,7 @@
         // Even if the library is included in "impl_only_static_libs" of defaults. This is still
         // needed because java_library which doesn't understand "impl_only_static_libs".
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
     ],
     libs: [
         // This cannot be in the defaults clause above because if it were, it would be used
@@ -145,7 +146,6 @@
     ],
     impl_only_static_libs: [
         "httpclient_impl",
-        "http_client_logging",
     ],
 }
 
diff --git a/framework/api/current.txt b/framework/api/current.txt
index ef8415c..7bc0cf3 100644
--- a/framework/api/current.txt
+++ b/framework/api/current.txt
@@ -337,6 +337,7 @@
     field public static final int NET_CAPABILITY_MCX = 23; // 0x17
     field public static final int NET_CAPABILITY_MMS = 0; // 0x0
     field public static final int NET_CAPABILITY_MMTEL = 33; // 0x21
+    field @FlaggedApi("com.android.net.flags.net_capability_not_bandwidth_constrained") public static final int NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED = 37; // 0x25
     field public static final int NET_CAPABILITY_NOT_CONGESTED = 20; // 0x14
     field public static final int NET_CAPABILITY_NOT_METERED = 11; // 0xb
     field public static final int NET_CAPABILITY_NOT_RESTRICTED = 13; // 0xd
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index 026d8a9..cd7307f 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -51,11 +51,16 @@
     field public static final int BLOCKED_REASON_DOZE = 2; // 0x2
     field public static final int BLOCKED_REASON_LOCKDOWN_VPN = 16; // 0x10
     field public static final int BLOCKED_REASON_LOW_POWER_STANDBY = 32; // 0x20
+    field @FlaggedApi("com.android.net.flags.blocked_reason_network_restricted") public static final int BLOCKED_REASON_NETWORK_RESTRICTED = 256; // 0x100
     field public static final int BLOCKED_REASON_NONE = 0; // 0x0
+    field @FlaggedApi("com.android.net.flags.blocked_reason_oem_deny_chains") public static final int BLOCKED_REASON_OEM_DENY = 128; // 0x80
     field public static final int BLOCKED_REASON_RESTRICTED_MODE = 8; // 0x8
     field @FlaggedApi("com.android.net.flags.basic_background_restrictions_enabled") public static final int FIREWALL_CHAIN_BACKGROUND = 6; // 0x6
     field public static final int FIREWALL_CHAIN_DOZABLE = 1; // 0x1
     field public static final int FIREWALL_CHAIN_LOW_POWER_STANDBY = 5; // 0x5
+    field @FlaggedApi("com.android.net.flags.metered_network_firewall_chains") public static final int FIREWALL_CHAIN_METERED_ALLOW = 10; // 0xa
+    field @FlaggedApi("com.android.net.flags.metered_network_firewall_chains") public static final int FIREWALL_CHAIN_METERED_DENY_ADMIN = 12; // 0xc
+    field @FlaggedApi("com.android.net.flags.metered_network_firewall_chains") public static final int FIREWALL_CHAIN_METERED_DENY_USER = 11; // 0xb
     field public static final int FIREWALL_CHAIN_OEM_DENY_1 = 7; // 0x7
     field public static final int FIREWALL_CHAIN_OEM_DENY_2 = 8; // 0x8
     field public static final int FIREWALL_CHAIN_OEM_DENY_3 = 9; // 0x9
diff --git a/framework/lint-baseline.xml b/framework/lint-baseline.xml
index 2c0b15f..dddabef 100644
--- a/framework/lint-baseline.xml
+++ b/framework/lint-baseline.xml
@@ -375,4 +375,279 @@
             column="34"/>
     </issue>
 
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_BACKGROUND` is a flagged API and should be inside an `if (Flags.basicBackgroundRestrictionsEnabled())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.BASIC_BACKGROUND_RESTRICTIONS_ENABLED) to transfer requirement to caller`)"
+        errorLine1="            FIREWALL_CHAIN_BACKGROUND"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsConstants.java"
+            line="115"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_ALLOW` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            FIREWALL_CHAIN_METERED_ALLOW"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsConstants.java"
+            line="137"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_USER` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            FIREWALL_CHAIN_METERED_DENY_USER,"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsConstants.java"
+            line="146"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_ADMIN` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            FIREWALL_CHAIN_METERED_DENY_ADMIN"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsConstants.java"
+            line="147"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_BACKGROUND` is a flagged API and should be inside an `if (Flags.basicBackgroundRestrictionsEnabled())` check (or annotate the surrounding method `getMatchByFirewallChain` with `@FlaggedApi(Flags.BASIC_BACKGROUND_RESTRICTIONS_ENABLED) to transfer requirement to caller`)"
+        errorLine1="            case FIREWALL_CHAIN_BACKGROUND:"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="133"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_ALLOW` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `getMatchByFirewallChain` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            case FIREWALL_CHAIN_METERED_ALLOW:"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="143"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_USER` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `getMatchByFirewallChain` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            case FIREWALL_CHAIN_METERED_DENY_USER:"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="145"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_ADMIN` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `getMatchByFirewallChain` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            case FIREWALL_CHAIN_METERED_DENY_ADMIN:"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="147"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `BLOCKED_REASON_APP_BACKGROUND` is a flagged API and should be inside an `if (Flags.basicBackgroundRestrictionsEnabled())` check (or annotate the surrounding method `getUidNetworkingBlockedReasons` with `@FlaggedApi(Flags.BASIC_BACKGROUND_RESTRICTIONS_ENABLED) to transfer requirement to caller`)"
+        errorLine1="            blockedReasons |= BLOCKED_REASON_APP_BACKGROUND;"
+        errorLine2="                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="293"
+            column="31"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `BLOCKED_REASON_OEM_DENY` is a flagged API and should be inside an `if (Flags.blockedReasonOemDenyChains())` check (or annotate the surrounding method `getUidNetworkingBlockedReasons` with `@FlaggedApi(Flags.BLOCKED_REASON_OEM_DENY_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            blockedReasons |= BLOCKED_REASON_OEM_DENY;"
+        errorLine2="                              ~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/BpfNetMapsUtils.java"
+            line="296"
+            column="31"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_ALLOW` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `addUidToMeteredNetworkAllowList` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_ALLOW);"
+        errorLine2="                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/ConnectivityManager.java"
+            line="6191"
+            column="41"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_ALLOW` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `removeUidFromMeteredNetworkAllowList` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_DENY);"
+        errorLine2="                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/ConnectivityManager.java"
+            line="6214"
+            column="41"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_USER` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `addUidToMeteredNetworkDenyList` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_DENY);"
+        errorLine2="                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/ConnectivityManager.java"
+            line="6243"
+            column="41"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `FIREWALL_CHAIN_METERED_DENY_USER` is a flagged API and should be inside an `if (Flags.meteredNetworkFirewallChains())` check (or annotate the surrounding method `removeUidFromMeteredNetworkDenyList` with `@FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS) to transfer requirement to caller`)"
+        errorLine1="            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_ALLOW);"
+        errorLine2="                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/ConnectivityManager.java"
+            line="6273"
+            column="41"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED` is a flagged API and should be inside an `if (Flags.netCapabilityNotBandwidthConstrained())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED) to transfer requirement to caller`)"
+        errorLine1="    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED;"
+        errorLine2="                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="767"
+            column="51"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED` is a flagged API and should be inside an `if (Flags.netCapabilityNotBandwidthConstrained())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED) to transfer requirement to caller`)"
+        errorLine1="            defaultCapabilities |= (1L &lt;&lt; NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);"
+        errorLine2="                                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="818"
+            column="43"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED` is a flagged API and should be inside an `if (Flags.netCapabilityNotBandwidthConstrained())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED) to transfer requirement to caller`)"
+        errorLine1="            (1L &lt;&lt; NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);"
+        errorLine2="                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="849"
+            column="20"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `getSubscriptionIds()` is a flagged API and should be inside an `if (Flags.requestRestrictedWifi())` check (or annotate the surrounding method `restrictCapabilitiesForTestNetwork` with `@FlaggedApi(Flags.REQUEST_RESTRICTED_WIFI) to transfer requirement to caller`)"
+        errorLine1="        final Set&lt;Integer> originalSubIds = getSubscriptionIds();"
+        errorLine2="                                            ~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="1254"
+            column="45"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `TRANSPORT_SATELLITE` is a flagged API and should be inside an `if (Flags.supportTransportSatellite())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.SUPPORT_TRANSPORT_SATELLITE) to transfer requirement to caller`)"
+        errorLine1="    public static final int MAX_TRANSPORT = TRANSPORT_SATELLITE;"
+        errorLine2="                                            ~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="1383"
+            column="45"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `TRANSPORT_SATELLITE` is a flagged API and should be inside an `if (Flags.supportTransportSatellite())` check (or annotate the surrounding method `specifierAcceptableForMultipleTransports` with `@FlaggedApi(Flags.SUPPORT_TRANSPORT_SATELLITE) to transfer requirement to caller`)"
+        errorLine1="                == (1 &lt;&lt; TRANSPORT_CELLULAR | 1 &lt;&lt; TRANSPORT_SATELLITE);"
+        errorLine2="                                                   ~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="1836"
+            column="52"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_LOCAL_NETWORK` is a flagged API and should be inside an `if (Flags.netCapabilityLocalNetwork())` check (or annotate the surrounding method `capabilityNameOf` with `@FlaggedApi(Flags.FLAG_NET_CAPABILITY_LOCAL_NETWORK) to transfer requirement to caller`)"
+        errorLine1="            case NET_CAPABILITY_LOCAL_NETWORK:        return &quot;LOCAL_NETWORK&quot;;"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="2637"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED` is a flagged API and should be inside an `if (Flags.netCapabilityNotBandwidthConstrained())` check (or annotate the surrounding method `capabilityNameOf` with `@FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED) to transfer requirement to caller`)"
+        errorLine1="            case NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED:    return &quot;NOT_BANDWIDTH_CONSTRAINED&quot;;"
+        errorLine2="                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkCapabilities.java"
+            line="2638"
+            column="18"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `TRANSPORT_SATELLITE` is a flagged API and should be inside an `if (Flags.supportTransportSatellite())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.SUPPORT_TRANSPORT_SATELLITE) to transfer requirement to caller`)"
+        errorLine1="        TRANSPORT_SATELLITE"
+        errorLine2="        ~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java"
+            line="80"
+            column="9"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Field `NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED` is a flagged API and should be inside an `if (Flags.netCapabilityNotBandwidthConstrained())` check (or annotate the surrounding method `?` with `@FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED) to transfer requirement to caller`)"
+        errorLine1="                NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkRequest.java"
+            line="291"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="Method `getSubscriptionIds()` is a flagged API and should be inside an `if (Flags.requestRestrictedWifi())` check (or annotate the surrounding method `getSubscriptionIds` with `@FlaggedApi(Flags.REQUEST_RESTRICTED_WIFI) to transfer requirement to caller`)"
+        errorLine1="        return networkCapabilities.getSubscriptionIds();"
+        errorLine2="               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework/src/android/net/NetworkRequest.java"
+            line="887"
+            column="16"/>
+    </issue>
+
 </issues>
\ No newline at end of file
diff --git a/framework/src/android/net/BpfNetMapsConstants.java b/framework/src/android/net/BpfNetMapsConstants.java
index 5d0fe73..f3773de 100644
--- a/framework/src/android/net/BpfNetMapsConstants.java
+++ b/framework/src/android/net/BpfNetMapsConstants.java
@@ -19,6 +19,9 @@
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3;
@@ -67,7 +70,7 @@
     // LINT.IfChange(match_type)
     public static final long NO_MATCH = 0;
     public static final long HAPPY_BOX_MATCH = (1 << 0);
-    public static final long PENALTY_BOX_MATCH = (1 << 1);
+    public static final long PENALTY_BOX_USER_MATCH = (1 << 1);
     public static final long DOZABLE_MATCH = (1 << 2);
     public static final long STANDBY_MATCH = (1 << 3);
     public static final long POWERSAVE_MATCH = (1 << 4);
@@ -79,10 +82,11 @@
     public static final long OEM_DENY_2_MATCH = (1 << 10);
     public static final long OEM_DENY_3_MATCH = (1 << 11);
     public static final long BACKGROUND_MATCH = (1 << 12);
+    public static final long PENALTY_BOX_ADMIN_MATCH = (1 << 13);
 
     public static final List<Pair<Long, String>> MATCH_LIST = Arrays.asList(
             Pair.create(HAPPY_BOX_MATCH, "HAPPY_BOX_MATCH"),
-            Pair.create(PENALTY_BOX_MATCH, "PENALTY_BOX_MATCH"),
+            Pair.create(PENALTY_BOX_USER_MATCH, "PENALTY_BOX_USER_MATCH"),
             Pair.create(DOZABLE_MATCH, "DOZABLE_MATCH"),
             Pair.create(STANDBY_MATCH, "STANDBY_MATCH"),
             Pair.create(POWERSAVE_MATCH, "POWERSAVE_MATCH"),
@@ -93,11 +97,13 @@
             Pair.create(OEM_DENY_1_MATCH, "OEM_DENY_1_MATCH"),
             Pair.create(OEM_DENY_2_MATCH, "OEM_DENY_2_MATCH"),
             Pair.create(OEM_DENY_3_MATCH, "OEM_DENY_3_MATCH"),
-            Pair.create(BACKGROUND_MATCH, "BACKGROUND_MATCH")
+            Pair.create(BACKGROUND_MATCH, "BACKGROUND_MATCH"),
+            Pair.create(PENALTY_BOX_ADMIN_MATCH, "PENALTY_BOX_ADMIN_MATCH")
     );
 
     /**
-     * List of all firewall allow chains.
+     * List of all firewall allow chains that are applied to all networks regardless of meteredness
+     * See {@link #METERED_ALLOW_CHAINS} for allow chains that are only applied to metered networks.
      *
      * Allow chains mean the firewall denies all uids by default, uids must be explicitly allowed.
      */
@@ -110,7 +116,8 @@
     );
 
     /**
-     * List of all firewall deny chains.
+     * List of all firewall deny chains that are applied to all networks regardless of meteredness
+     * See {@link #METERED_DENY_CHAINS} for deny chains that are only applied to metered networks.
      *
      * Deny chains mean the firewall allows all uids by default, uids must be explicitly denied.
      */
@@ -120,5 +127,24 @@
             FIREWALL_CHAIN_OEM_DENY_2,
             FIREWALL_CHAIN_OEM_DENY_3
     );
+
+    /**
+     * List of all firewall allow chains that are only applied to metered networks.
+     * See {@link #ALLOW_CHAINS} for allow chains that are applied to all networks regardless of
+     * meteredness.
+     */
+    public static final List<Integer> METERED_ALLOW_CHAINS = List.of(
+            FIREWALL_CHAIN_METERED_ALLOW
+    );
+
+    /**
+     * List of all firewall deny chains that are only applied to metered networks.
+     * See {@link #DENY_CHAINS} for deny chains that are applied to all networks regardless of
+     * meteredness.
+     */
+    public static final List<Integer> METERED_DENY_CHAINS = List.of(
+            FIREWALL_CHAIN_METERED_DENY_USER,
+            FIREWALL_CHAIN_METERED_DENY_ADMIN
+    );
     // LINT.ThenChange(../../../../bpf_progs/netd.h)
 }
diff --git a/framework/src/android/net/BpfNetMapsReader.java b/framework/src/android/net/BpfNetMapsReader.java
deleted file mode 100644
index ee422ab..0000000
--- a/framework/src/android/net/BpfNetMapsReader.java
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net;
-
-import static android.net.BpfNetMapsConstants.CONFIGURATION_MAP_PATH;
-import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED;
-import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_KEY;
-import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_MAP_PATH;
-import static android.net.BpfNetMapsConstants.HAPPY_BOX_MATCH;
-import static android.net.BpfNetMapsConstants.PENALTY_BOX_MATCH;
-import static android.net.BpfNetMapsConstants.UID_OWNER_MAP_PATH;
-import static android.net.BpfNetMapsConstants.UID_RULES_CONFIGURATION_KEY;
-import static android.net.BpfNetMapsUtils.getMatchByFirewallChain;
-import static android.net.BpfNetMapsUtils.isFirewallAllowList;
-import static android.net.BpfNetMapsUtils.throwIfPreT;
-import static android.net.ConnectivityManager.FIREWALL_RULE_ALLOW;
-import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
-
-import android.annotation.NonNull;
-import android.annotation.RequiresApi;
-import android.os.Build;
-import android.os.ServiceSpecificException;
-import android.system.ErrnoException;
-import android.system.Os;
-
-import com.android.internal.annotations.VisibleForTesting;
-import com.android.modules.utils.build.SdkLevel;
-import com.android.net.module.util.BpfMap;
-import com.android.net.module.util.IBpfMap;
-import com.android.net.module.util.Struct.S32;
-import com.android.net.module.util.Struct.U32;
-import com.android.net.module.util.Struct.U8;
-
-/**
- * A helper class to *read* java BpfMaps.
- * @hide
- */
-@RequiresApi(Build.VERSION_CODES.TIRAMISU)  // BPF maps were only mainlined in T
-public class BpfNetMapsReader {
-    private static final String TAG = BpfNetMapsReader.class.getSimpleName();
-
-    // Locally store the handle of bpf maps. The FileDescriptors are statically cached inside the
-    // BpfMap implementation.
-
-    // Bpf map to store various networking configurations, the format of the value is different
-    // for different keys. See BpfNetMapsConstants#*_CONFIGURATION_KEY for keys.
-    private final IBpfMap<S32, U32> mConfigurationMap;
-    // Bpf map to store per uid traffic control configurations.
-    // See {@link UidOwnerValue} for more detail.
-    private final IBpfMap<S32, UidOwnerValue> mUidOwnerMap;
-    private final IBpfMap<S32, U8> mDataSaverEnabledMap;
-    private final Dependencies mDeps;
-
-    // Bitmaps for calculating whether a given uid is blocked by firewall chains.
-    private static final long sMaskDropIfSet;
-    private static final long sMaskDropIfUnset;
-
-    static {
-        long maskDropIfSet = 0L;
-        long maskDropIfUnset = 0L;
-
-        for (int chain : BpfNetMapsConstants.ALLOW_CHAINS) {
-            final long match = getMatchByFirewallChain(chain);
-            maskDropIfUnset |= match;
-        }
-        for (int chain : BpfNetMapsConstants.DENY_CHAINS) {
-            final long match = getMatchByFirewallChain(chain);
-            maskDropIfSet |= match;
-        }
-        sMaskDropIfSet = maskDropIfSet;
-        sMaskDropIfUnset = maskDropIfUnset;
-    }
-
-    private static class SingletonHolder {
-        static final BpfNetMapsReader sInstance = new BpfNetMapsReader();
-    }
-
-    @NonNull
-    public static BpfNetMapsReader getInstance() {
-        return SingletonHolder.sInstance;
-    }
-
-    private BpfNetMapsReader() {
-        this(new Dependencies());
-    }
-
-    // While the production code uses the singleton to optimize for performance and deal with
-    // concurrent access, the test needs to use a non-static approach for dependency injection and
-    // mocking virtual bpf maps.
-    @VisibleForTesting
-    public BpfNetMapsReader(@NonNull Dependencies deps) {
-        if (!SdkLevel.isAtLeastT()) {
-            throw new UnsupportedOperationException(
-                    BpfNetMapsReader.class.getSimpleName() + " is not supported below Android T");
-        }
-        mDeps = deps;
-        mConfigurationMap = mDeps.getConfigurationMap();
-        mUidOwnerMap = mDeps.getUidOwnerMap();
-        mDataSaverEnabledMap = mDeps.getDataSaverEnabledMap();
-    }
-
-    /**
-     * Dependencies of BpfNetMapReader, for injection in tests.
-     */
-    @VisibleForTesting
-    public static class Dependencies {
-        /** Get the configuration map. */
-        public IBpfMap<S32, U32> getConfigurationMap() {
-            try {
-                return new BpfMap<>(CONFIGURATION_MAP_PATH, BpfMap.BPF_F_RDONLY,
-                        S32.class, U32.class);
-            } catch (ErrnoException e) {
-                throw new IllegalStateException("Cannot open configuration map", e);
-            }
-        }
-
-        /** Get the uid owner map. */
-        public IBpfMap<S32, UidOwnerValue> getUidOwnerMap() {
-            try {
-                return new BpfMap<>(UID_OWNER_MAP_PATH, BpfMap.BPF_F_RDONLY,
-                        S32.class, UidOwnerValue.class);
-            } catch (ErrnoException e) {
-                throw new IllegalStateException("Cannot open uid owner map", e);
-            }
-        }
-
-        /** Get the data saver enabled map. */
-        public  IBpfMap<S32, U8> getDataSaverEnabledMap() {
-            try {
-                return new BpfMap<>(DATA_SAVER_ENABLED_MAP_PATH, BpfMap.BPF_F_RDONLY, S32.class,
-                        U8.class);
-            } catch (ErrnoException e) {
-                throw new IllegalStateException("Cannot open data saver enabled map", e);
-            }
-        }
-    }
-
-    /**
-     * Get the specified firewall chain's status.
-     *
-     * @param chain target chain
-     * @return {@code true} if chain is enabled, {@code false} if chain is not enabled.
-     * @throws UnsupportedOperationException if called on pre-T devices.
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    public boolean isChainEnabled(final int chain) {
-        return isChainEnabled(mConfigurationMap, chain);
-    }
-
-    /**
-     * Get firewall rule of specified firewall chain on specified uid.
-     *
-     * @param chain target chain
-     * @param uid        target uid
-     * @return either {@link ConnectivityManager#FIREWALL_RULE_ALLOW} or
-     *         {@link ConnectivityManager#FIREWALL_RULE_DENY}.
-     * @throws UnsupportedOperationException if called on pre-T devices.
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    public int getUidRule(final int chain, final int uid) {
-        return getUidRule(mUidOwnerMap, chain, uid);
-    }
-
-    /**
-     * Get the specified firewall chain's status.
-     *
-     * @param configurationMap target configurationMap
-     * @param chain target chain
-     * @return {@code true} if chain is enabled, {@code false} if chain is not enabled.
-     * @throws UnsupportedOperationException if called on pre-T devices.
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    public static boolean isChainEnabled(
-            final IBpfMap<S32, U32> configurationMap, final int chain) {
-        throwIfPreT("isChainEnabled is not available on pre-T devices");
-
-        final long match = getMatchByFirewallChain(chain);
-        try {
-            final U32 config = configurationMap.getValue(UID_RULES_CONFIGURATION_KEY);
-            return (config.val & match) != 0;
-        } catch (ErrnoException e) {
-            throw new ServiceSpecificException(e.errno,
-                    "Unable to get firewall chain status: " + Os.strerror(e.errno));
-        }
-    }
-
-    /**
-     * Get firewall rule of specified firewall chain on specified uid.
-     *
-     * @param uidOwnerMap target uidOwnerMap.
-     * @param chain target chain.
-     * @param uid target uid.
-     * @return either FIREWALL_RULE_ALLOW or FIREWALL_RULE_DENY
-     * @throws UnsupportedOperationException if called on pre-T devices.
-     * @throws ServiceSpecificException      in case of failure, with an error code indicating the
-     *                                       cause of the failure.
-     */
-    public static int getUidRule(final IBpfMap<S32, UidOwnerValue> uidOwnerMap,
-            final int chain, final int uid) {
-        throwIfPreT("getUidRule is not available on pre-T devices");
-
-        final long match = getMatchByFirewallChain(chain);
-        final boolean isAllowList = isFirewallAllowList(chain);
-        try {
-            final UidOwnerValue uidMatch = uidOwnerMap.getValue(new S32(uid));
-            final boolean isMatchEnabled = uidMatch != null && (uidMatch.rule & match) != 0;
-            return isMatchEnabled == isAllowList ? FIREWALL_RULE_ALLOW : FIREWALL_RULE_DENY;
-        } catch (ErrnoException e) {
-            throw new ServiceSpecificException(e.errno,
-                    "Unable to get uid rule status: " + Os.strerror(e.errno));
-        }
-    }
-
-    /**
-     * Return whether the network is blocked by firewall chains for the given uid.
-     *
-     * @param uid The target uid.
-     * @param isNetworkMetered Whether the target network is metered.
-     * @param isDataSaverEnabled Whether the data saver is enabled.
-     *
-     * @return True if the network is blocked. Otherwise, false.
-     * @throws ServiceSpecificException if the read fails.
-     *
-     * @hide
-     */
-    public boolean isUidNetworkingBlocked(final int uid, boolean isNetworkMetered,
-            boolean isDataSaverEnabled) {
-        throwIfPreT("isUidBlockedByFirewallChains is not available on pre-T devices");
-
-        final long uidRuleConfig;
-        final long uidMatch;
-        try {
-            uidRuleConfig = mConfigurationMap.getValue(UID_RULES_CONFIGURATION_KEY).val;
-            final UidOwnerValue value = mUidOwnerMap.getValue(new S32(uid));
-            uidMatch = (value != null) ? value.rule : 0L;
-        } catch (ErrnoException e) {
-            throw new ServiceSpecificException(e.errno,
-                    "Unable to get firewall chain status: " + Os.strerror(e.errno));
-        }
-
-        final boolean blockedByAllowChains = 0 != (uidRuleConfig & ~uidMatch & sMaskDropIfUnset);
-        final boolean blockedByDenyChains = 0 != (uidRuleConfig & uidMatch & sMaskDropIfSet);
-        if (blockedByAllowChains || blockedByDenyChains) {
-            return true;
-        }
-
-        if (!isNetworkMetered) return false;
-        if ((uidMatch & PENALTY_BOX_MATCH) != 0) return true;
-        if ((uidMatch & HAPPY_BOX_MATCH) != 0) return false;
-        return isDataSaverEnabled;
-    }
-
-    /**
-     * Get Data Saver enabled or disabled
-     *
-     * @return whether Data Saver is enabled or disabled.
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    public boolean getDataSaverEnabled() {
-        throwIfPreT("getDataSaverEnabled is not available on pre-T devices");
-
-        try {
-            return mDataSaverEnabledMap.getValue(DATA_SAVER_ENABLED_KEY).val == DATA_SAVER_ENABLED;
-        } catch (ErrnoException e) {
-            throw new ServiceSpecificException(e.errno, "Unable to get data saver: "
-                    + Os.strerror(e.errno));
-        }
-    }
-}
diff --git a/framework/src/android/net/BpfNetMapsUtils.java b/framework/src/android/net/BpfNetMapsUtils.java
index 0be30bb..282a11e 100644
--- a/framework/src/android/net/BpfNetMapsUtils.java
+++ b/framework/src/android/net/BpfNetMapsUtils.java
@@ -18,32 +18,69 @@
 
 import static android.net.BpfNetMapsConstants.ALLOW_CHAINS;
 import static android.net.BpfNetMapsConstants.BACKGROUND_MATCH;
+import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED;
+import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_KEY;
 import static android.net.BpfNetMapsConstants.DENY_CHAINS;
 import static android.net.BpfNetMapsConstants.DOZABLE_MATCH;
+import static android.net.BpfNetMapsConstants.HAPPY_BOX_MATCH;
 import static android.net.BpfNetMapsConstants.LOW_POWER_STANDBY_MATCH;
 import static android.net.BpfNetMapsConstants.MATCH_LIST;
+import static android.net.BpfNetMapsConstants.METERED_ALLOW_CHAINS;
+import static android.net.BpfNetMapsConstants.METERED_DENY_CHAINS;
 import static android.net.BpfNetMapsConstants.NO_MATCH;
 import static android.net.BpfNetMapsConstants.OEM_DENY_1_MATCH;
 import static android.net.BpfNetMapsConstants.OEM_DENY_2_MATCH;
 import static android.net.BpfNetMapsConstants.OEM_DENY_3_MATCH;
+import static android.net.BpfNetMapsConstants.PENALTY_BOX_ADMIN_MATCH;
+import static android.net.BpfNetMapsConstants.PENALTY_BOX_USER_MATCH;
 import static android.net.BpfNetMapsConstants.POWERSAVE_MATCH;
 import static android.net.BpfNetMapsConstants.RESTRICTED_MATCH;
 import static android.net.BpfNetMapsConstants.STANDBY_MATCH;
+import static android.net.BpfNetMapsConstants.UID_RULES_CONFIGURATION_KEY;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_ADMIN_DISABLED;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_DATA_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_MASK;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_USER_RESTRICTED;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_BACKGROUND;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_STANDBY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_BATTERY_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_REASON_DOZE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_OEM_DENY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_RESTRICTED_MODE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_POWERSAVE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_RESTRICTED;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_RULE_ALLOW;
+import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
 import static android.system.OsConstants.EINVAL;
 
+import android.os.Build;
+import android.os.Process;
 import android.os.ServiceSpecificException;
+import android.os.UserHandle;
+import android.system.ErrnoException;
+import android.system.Os;
 import android.util.Pair;
 
+import androidx.annotation.RequiresApi;
+
 import com.android.modules.utils.build.SdkLevel;
+import com.android.net.module.util.IBpfMap;
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.S32;
+import com.android.net.module.util.Struct.U32;
+import com.android.net.module.util.Struct.U8;
 
 import java.util.StringJoiner;
 
@@ -55,7 +92,29 @@
 // Note that this class should be put into bootclasspath instead of static libraries.
 // Because modules could have different copies of this class if this is statically linked,
 // which would be problematic if the definitions in these modules are not synchronized.
+// Note that NetworkStack can not use this before U due to b/326143935
+@RequiresApi(Build.VERSION_CODES.TIRAMISU)
 public class BpfNetMapsUtils {
+    // Bitmaps for calculating whether a given uid is blocked by firewall chains.
+    private static final long sMaskDropIfSet;
+    private static final long sMaskDropIfUnset;
+
+    static {
+        long maskDropIfSet = 0L;
+        long maskDropIfUnset = 0L;
+
+        for (int chain : BpfNetMapsConstants.ALLOW_CHAINS) {
+            final long match = getMatchByFirewallChain(chain);
+            maskDropIfUnset |= match;
+        }
+        for (int chain : BpfNetMapsConstants.DENY_CHAINS) {
+            final long match = getMatchByFirewallChain(chain);
+            maskDropIfSet |= match;
+        }
+        sMaskDropIfSet = maskDropIfSet;
+        sMaskDropIfUnset = maskDropIfUnset;
+    }
+
     // Prevent this class from being accidental instantiated.
     private BpfNetMapsUtils() {}
 
@@ -82,6 +141,12 @@
                 return OEM_DENY_2_MATCH;
             case FIREWALL_CHAIN_OEM_DENY_3:
                 return OEM_DENY_3_MATCH;
+            case FIREWALL_CHAIN_METERED_ALLOW:
+                return HAPPY_BOX_MATCH;
+            case FIREWALL_CHAIN_METERED_DENY_USER:
+                return PENALTY_BOX_USER_MATCH;
+            case FIREWALL_CHAIN_METERED_DENY_ADMIN:
+                return PENALTY_BOX_ADMIN_MATCH;
             default:
                 throw new ServiceSpecificException(EINVAL, "Invalid firewall chain: " + chain);
         }
@@ -94,9 +159,9 @@
      * DENYLIST means the firewall allows all by default, uids must be explicitly denied
      */
     public static boolean isFirewallAllowList(final int chain) {
-        if (ALLOW_CHAINS.contains(chain)) {
+        if (ALLOW_CHAINS.contains(chain) || METERED_ALLOW_CHAINS.contains(chain)) {
             return true;
-        } else if (DENY_CHAINS.contains(chain)) {
+        } else if (DENY_CHAINS.contains(chain) || METERED_DENY_CHAINS.contains(chain)) {
             return false;
         }
         throw new ServiceSpecificException(EINVAL, "Invalid firewall chain: " + chain);
@@ -133,4 +198,178 @@
             throw new UnsupportedOperationException(msg);
         }
     }
+
+    /**
+     * Get the specified firewall chain's status.
+     *
+     * @param configurationMap target configurationMap
+     * @param chain target chain
+     * @return {@code true} if chain is enabled, {@code false} if chain is not enabled.
+     * @throws UnsupportedOperationException if called on pre-T devices.
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *                                  cause of the failure.
+     */
+    public static boolean isChainEnabled(
+            final IBpfMap<S32, U32> configurationMap, final int chain) {
+        throwIfPreT("isChainEnabled is not available on pre-T devices");
+
+        final long match = getMatchByFirewallChain(chain);
+        try {
+            final U32 config = configurationMap.getValue(UID_RULES_CONFIGURATION_KEY);
+            return (config.val & match) != 0;
+        } catch (ErrnoException e) {
+            throw new ServiceSpecificException(e.errno,
+                    "Unable to get firewall chain status: " + Os.strerror(e.errno));
+        }
+    }
+
+    /**
+     * Get firewall rule of specified firewall chain on specified uid.
+     *
+     * @param uidOwnerMap target uidOwnerMap.
+     * @param chain target chain.
+     * @param uid target uid.
+     * @return either FIREWALL_RULE_ALLOW or FIREWALL_RULE_DENY
+     * @throws UnsupportedOperationException if called on pre-T devices.
+     * @throws ServiceSpecificException      in case of failure, with an error code indicating the
+     *                                       cause of the failure.
+     */
+    public static int getUidRule(final IBpfMap<S32, UidOwnerValue> uidOwnerMap,
+            final int chain, final int uid) {
+        throwIfPreT("getUidRule is not available on pre-T devices");
+
+        final long match = getMatchByFirewallChain(chain);
+        final boolean isAllowList = isFirewallAllowList(chain);
+        try {
+            final UidOwnerValue uidMatch = uidOwnerMap.getValue(new S32(uid));
+            final boolean isMatchEnabled = uidMatch != null && (uidMatch.rule & match) != 0;
+            return isMatchEnabled == isAllowList ? FIREWALL_RULE_ALLOW : FIREWALL_RULE_DENY;
+        } catch (ErrnoException e) {
+            throw new ServiceSpecificException(e.errno,
+                    "Unable to get uid rule status: " + Os.strerror(e.errno));
+        }
+    }
+
+    /**
+     * Get blocked reasons for specified uid
+     *
+     * @param uid Target Uid
+     * @return Reasons of network access blocking for an UID
+     */
+    public static int getUidNetworkingBlockedReasons(final int uid,
+            IBpfMap<S32, U32> configurationMap,
+            IBpfMap<S32, UidOwnerValue> uidOwnerMap,
+            IBpfMap<S32, U8> dataSaverEnabledMap
+    ) {
+        final long uidRuleConfig;
+        final long uidMatch;
+        try {
+            uidRuleConfig = configurationMap.getValue(UID_RULES_CONFIGURATION_KEY).val;
+            final UidOwnerValue value = uidOwnerMap.getValue(new Struct.S32(uid));
+            uidMatch = (value != null) ? value.rule : 0L;
+        } catch (ErrnoException e) {
+            throw new ServiceSpecificException(e.errno,
+                    "Unable to get firewall chain status: " + Os.strerror(e.errno));
+        }
+        final long blockingMatches = (uidRuleConfig & ~uidMatch & sMaskDropIfUnset)
+                | (uidRuleConfig & uidMatch & sMaskDropIfSet);
+
+        int blockedReasons = BLOCKED_REASON_NONE;
+        if ((blockingMatches & POWERSAVE_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_BATTERY_SAVER;
+        }
+        if ((blockingMatches & DOZABLE_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_DOZE;
+        }
+        if ((blockingMatches & STANDBY_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_APP_STANDBY;
+        }
+        if ((blockingMatches & RESTRICTED_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_RESTRICTED_MODE;
+        }
+        if ((blockingMatches & LOW_POWER_STANDBY_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_LOW_POWER_STANDBY;
+        }
+        if ((blockingMatches & BACKGROUND_MATCH) != 0) {
+            blockedReasons |= BLOCKED_REASON_APP_BACKGROUND;
+        }
+        if ((blockingMatches & (OEM_DENY_1_MATCH | OEM_DENY_2_MATCH | OEM_DENY_3_MATCH)) != 0) {
+            blockedReasons |= BLOCKED_REASON_OEM_DENY;
+        }
+
+        // Metered chains are not enabled by configuration map currently.
+        if ((uidMatch & PENALTY_BOX_USER_MATCH) != 0) {
+            blockedReasons |= BLOCKED_METERED_REASON_USER_RESTRICTED;
+        }
+        if ((uidMatch & PENALTY_BOX_ADMIN_MATCH) != 0) {
+            blockedReasons |= BLOCKED_METERED_REASON_ADMIN_DISABLED;
+        }
+        if ((uidMatch & HAPPY_BOX_MATCH) == 0 && getDataSaverEnabled(dataSaverEnabledMap)) {
+            blockedReasons |= BLOCKED_METERED_REASON_DATA_SAVER;
+        }
+
+        return blockedReasons;
+    }
+
+    /**
+     * Return whether the network is blocked by firewall chains for the given uid.
+     *
+     * Note that {@link #getDataSaverEnabled(IBpfMap)} has a latency before V.
+     *
+     * @param uid The target uid.
+     * @param isNetworkMetered Whether the target network is metered.
+     *
+     * @return True if the network is blocked. Otherwise, false.
+     * @throws ServiceSpecificException if the read fails.
+     *
+     * @hide
+     */
+    public static boolean isUidNetworkingBlocked(final int uid, boolean isNetworkMetered,
+            IBpfMap<S32, U32> configurationMap,
+            IBpfMap<S32, UidOwnerValue> uidOwnerMap,
+            IBpfMap<S32, U8> dataSaverEnabledMap
+    ) {
+        throwIfPreT("isUidBlockedByFirewallChains is not available on pre-T devices");
+
+        // System uids are not blocked by firewall chains, see bpf_progs/netd.c
+        // TODO: b/348513058 - use UserHandle.isCore() once it is accessible
+        if (UserHandle.getAppId(uid) < Process.FIRST_APPLICATION_UID) {
+            return false;
+        }
+
+        final int blockedReasons = getUidNetworkingBlockedReasons(
+                uid,
+                configurationMap,
+                uidOwnerMap,
+                dataSaverEnabledMap);
+        if (isNetworkMetered) {
+            return blockedReasons != BLOCKED_REASON_NONE;
+        } else {
+            return (blockedReasons & ~BLOCKED_METERED_REASON_MASK) != BLOCKED_REASON_NONE;
+        }
+    }
+
+    /**
+     * Get Data Saver enabled or disabled
+     *
+     * Note that before V, the data saver status in bpf is written by ConnectivityService
+     * when receiving {@link ConnectivityManager#ACTION_RESTRICT_BACKGROUND_CHANGED}. Thus,
+     * the status is not synchronized.
+     * On V+, the data saver status is set by platform code when enabling/disabling
+     * data saver, which is synchronized.
+     *
+     * @return whether Data Saver is enabled or disabled.
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *                                  cause of the failure.
+     */
+    public static boolean getDataSaverEnabled(IBpfMap<S32, U8> dataSaverEnabledMap) {
+        throwIfPreT("getDataSaverEnabled is not available on pre-T devices");
+
+        try {
+            return dataSaverEnabledMap.getValue(DATA_SAVER_ENABLED_KEY).val == DATA_SAVER_ENABLED;
+        } catch (ErrnoException e) {
+            throw new ServiceSpecificException(e.errno, "Unable to get data saver: "
+                    + Os.strerror(e.errno));
+        }
+    }
 }
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 915ec52..ffaf41f 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -28,6 +28,7 @@
 import android.annotation.CallbackExecutor;
 import android.annotation.FlaggedApi;
 import android.annotation.IntDef;
+import android.annotation.LongDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresApi;
@@ -70,23 +71,29 @@
 import android.telephony.TelephonyManager;
 import android.util.ArrayMap;
 import android.util.Log;
+import android.util.LruCache;
 import android.util.Range;
 import android.util.SparseIntArray;
 
 import com.android.internal.annotations.GuardedBy;
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.modules.utils.build.SdkLevel;
 
 import libcore.net.event.NetworkEventDispatcher;
 
 import java.io.IOException;
 import java.io.UncheckedIOException;
+import java.lang.annotation.ElementType;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.lang.reflect.Method;
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.Socket;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
@@ -128,6 +135,12 @@
                 "com.android.net.flags.support_is_uid_networking_blocked";
         static final String BASIC_BACKGROUND_RESTRICTIONS_ENABLED =
                 "com.android.net.flags.basic_background_restrictions_enabled";
+        static final String METERED_NETWORK_FIREWALL_CHAINS =
+                "com.android.net.flags.metered_network_firewall_chains";
+        static final String BLOCKED_REASON_OEM_DENY_CHAINS =
+                "com.android.net.flags.blocked_reason_oem_deny_chains";
+        static final String BLOCKED_REASON_NETWORK_RESTRICTED =
+                "com.android.net.flags.blocked_reason_network_restricted";
     }
 
     /**
@@ -911,6 +924,30 @@
     public static final int BLOCKED_REASON_APP_BACKGROUND = 1 << 6;
 
     /**
+     * Flag to indicate that an app is subject to OEM-specific application restrictions that would
+     * result in its network access being blocked.
+     *
+     * @see #FIREWALL_CHAIN_OEM_DENY_1
+     * @see #FIREWALL_CHAIN_OEM_DENY_2
+     * @see #FIREWALL_CHAIN_OEM_DENY_3
+     * @hide
+     */
+    @FlaggedApi(Flags.BLOCKED_REASON_OEM_DENY_CHAINS)
+    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
+    public static final int BLOCKED_REASON_OEM_DENY = 1 << 7;
+
+    /**
+     * Flag to indicate that an app does not have permission to access the specified network,
+     * for example, because it does not have the {@link android.Manifest.permission#INTERNET}
+     * permission.
+     *
+     * @hide
+     */
+    @FlaggedApi(Flags.BLOCKED_REASON_NETWORK_RESTRICTED)
+    @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
+    public static final int BLOCKED_REASON_NETWORK_RESTRICTED = 1 << 8;
+
+    /**
      * Flag to indicate that an app is subject to Data saver restrictions that would
      * result in its metered network access being blocked.
      *
@@ -950,6 +987,8 @@
             BLOCKED_REASON_LOCKDOWN_VPN,
             BLOCKED_REASON_LOW_POWER_STANDBY,
             BLOCKED_REASON_APP_BACKGROUND,
+            BLOCKED_REASON_OEM_DENY,
+            BLOCKED_REASON_NETWORK_RESTRICTED,
             BLOCKED_METERED_REASON_DATA_SAVER,
             BLOCKED_METERED_REASON_USER_RESTRICTED,
             BLOCKED_METERED_REASON_ADMIN_DISABLED,
@@ -1068,6 +1107,61 @@
     @SystemApi(client = MODULE_LIBRARIES)
     public static final int FIREWALL_CHAIN_OEM_DENY_3 = 9;
 
+    /**
+     * Firewall chain for allow list on metered networks
+     *
+     * UIDs added to this chain have access to metered networks, unless they're also in one of the
+     * denylist, {@link #FIREWALL_CHAIN_METERED_DENY_USER},
+     * {@link #FIREWALL_CHAIN_METERED_DENY_ADMIN}
+     *
+     * Note that this chain is used from a separate bpf program that is triggered by iptables and
+     * can not be controlled by {@link ConnectivityManager#setFirewallChainEnabled}.
+     *
+     * @hide
+     */
+    // TODO: Merge this chain with data saver and support setFirewallChainEnabled
+    @FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS)
+    @SystemApi(client = MODULE_LIBRARIES)
+    public static final int FIREWALL_CHAIN_METERED_ALLOW = 10;
+
+    /**
+     * Firewall chain for user-set restrictions on metered networks
+     *
+     * UIDs added to this chain do not have access to metered networks.
+     * UIDs should be added to this chain based on user settings.
+     * To restrict metered network based on admin configuration (e.g. enterprise policies),
+     * {@link #FIREWALL_CHAIN_METERED_DENY_ADMIN} should be used.
+     * This chain corresponds to {@link #BLOCKED_METERED_REASON_USER_RESTRICTED}
+     *
+     * Note that this chain is used from a separate bpf program that is triggered by iptables and
+     * can not be controlled by {@link ConnectivityManager#setFirewallChainEnabled}.
+     *
+     * @hide
+     */
+    // TODO: Support setFirewallChainEnabled to control this chain
+    @FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS)
+    @SystemApi(client = MODULE_LIBRARIES)
+    public static final int FIREWALL_CHAIN_METERED_DENY_USER = 11;
+
+    /**
+     * Firewall chain for admin-set restrictions on metered networks
+     *
+     * UIDs added to this chain do not have access to metered networks.
+     * UIDs should be added to this chain based on admin configuration (e.g. enterprise policies).
+     * To restrict metered network based on user settings, {@link #FIREWALL_CHAIN_METERED_DENY_USER}
+     * should be used.
+     * This chain corresponds to {@link #BLOCKED_METERED_REASON_ADMIN_DISABLED}
+     *
+     * Note that this chain is used from a separate bpf program that is triggered by iptables and
+     * can not be controlled by {@link ConnectivityManager#setFirewallChainEnabled}.
+     *
+     * @hide
+     */
+    // TODO: Support setFirewallChainEnabled to control this chain
+    @FlaggedApi(Flags.METERED_NETWORK_FIREWALL_CHAINS)
+    @SystemApi(client = MODULE_LIBRARIES)
+    public static final int FIREWALL_CHAIN_METERED_DENY_ADMIN = 12;
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(flag = false, prefix = "FIREWALL_CHAIN_", value = {
@@ -1079,7 +1173,10 @@
         FIREWALL_CHAIN_BACKGROUND,
         FIREWALL_CHAIN_OEM_DENY_1,
         FIREWALL_CHAIN_OEM_DENY_2,
-        FIREWALL_CHAIN_OEM_DENY_3
+        FIREWALL_CHAIN_OEM_DENY_3,
+        FIREWALL_CHAIN_METERED_ALLOW,
+        FIREWALL_CHAIN_METERED_DENY_USER,
+        FIREWALL_CHAIN_METERED_DENY_ADMIN
     })
     public @interface FirewallChain {}
 
@@ -1117,6 +1214,16 @@
     })
     public @interface FirewallRule {}
 
+    /** @hide */
+    public static final long FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS = 1L;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @LongDef(flag = true, prefix = "FEATURE_", value = {
+            FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS
+    })
+    public @interface ConnectivityManagerFeature {}
+
     /**
      * A kludge to facilitate static access where a Context pointer isn't available, like in the
      * case of the static set/getProcessDefaultNetwork methods and from the Network class.
@@ -1130,6 +1237,27 @@
     @GuardedBy("mTetheringEventCallbacks")
     private TetheringManager mTetheringManager;
 
+    // Cache of the most recently used NetworkCallback classes (not instances) -> method flags.
+    // 100 is chosen kind arbitrarily as an unlikely number of different types of NetworkCallback
+    // overrides that a process may have, and should generally not be reached (for example, the
+    // system server services.jar has been observed with dexdump to have only 16 when this was
+    // added, and a very large system services app only had 18).
+    // If this number is exceeded, the code will still function correctly, but re-registering
+    // using a network callback class that was used before, but 100+ other classes have been used in
+    // the meantime, will be a bit slower (as slow as the first registration) because
+    // getDeclaredMethodsFlag must re-examine the callback class to determine what methods it
+    // overrides.
+    private static final LruCache<Class<? extends NetworkCallback>, Integer> sMethodFlagsCache =
+            new LruCache<>(100);
+
+    private final Object mEnabledConnectivityManagerFeaturesLock = new Object();
+    // mEnabledConnectivityManagerFeatures is lazy-loaded in this ConnectivityManager instance, but
+    // fetched from ConnectivityService, where it is loaded in ConnectivityService startup, so it
+    // should have consistent values.
+    @GuardedBy("sEnabledConnectivityManagerFeaturesLock")
+    @ConnectivityManagerFeature
+    private Long mEnabledConnectivityManagerFeatures = null;
+
     private TetheringManager getTetheringManager() {
         synchronized (mTetheringEventCallbacks) {
             if (mTetheringManager == null) {
@@ -3887,6 +4015,55 @@
      */
     public static class NetworkCallback {
         /**
+         * Bitmask of method flags with all flags set.
+         * @hide
+         */
+        public static final int DECLARED_METHODS_ALL = ~0;
+
+        /**
+         * Bitmask of method flags with no flag set.
+         * @hide
+         */
+        public static final int DECLARED_METHODS_NONE = 0;
+
+        // Tracks whether an instance was created via reflection without calling the constructor.
+        private final boolean mConstructorWasCalled;
+
+        /**
+         * Annotation for NetworkCallback methods to verify filtering is configured properly.
+         *
+         * This is only used in tests to ensure that tests fail when a new callback is added, or
+         * callbacks are modified, without updating
+         * {@link NetworkCallbackMethodsHolder#NETWORK_CB_METHODS} properly.
+         * @hide
+         */
+        @Retention(RetentionPolicy.RUNTIME)
+        @Target(ElementType.METHOD)
+        @VisibleForTesting
+        public @interface FilteredCallback {
+            /**
+             * The NetworkCallback.METHOD_* ID of this method.
+             */
+            int methodId();
+
+            /**
+             * The ConnectivityManager.CALLBACK_* message that this method is directly called by.
+             *
+             * If this method is not called by any message, this should be
+             * {@link #CALLBACK_TRANSITIVE_CALLS_ONLY}.
+             */
+            int calledByCallbackId();
+
+            /**
+             * If this method may call other NetworkCallback methods, an array of methods it calls.
+             *
+             * Only direct calls (not transitive calls) should be included. The IDs must be
+             * NetworkCallback.METHOD_* IDs.
+             */
+            int[] mayCall() default {};
+        }
+
+        /**
          * No flags associated with this callback.
          * @hide
          */
@@ -3949,6 +4126,7 @@
                 throw new IllegalArgumentException("Invalid flags");
             }
             mFlags = flags;
+            mConstructorWasCalled = true;
         }
 
         /**
@@ -3966,7 +4144,9 @@
          *
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONPRECHECK, calledByCallbackId = CALLBACK_PRECHECK)
         public void onPreCheck(@NonNull Network network) {}
+        private static final int METHOD_ONPRECHECK = 1;
 
         /**
          * Called when the framework connects and has declared a new network ready for use.
@@ -3981,6 +4161,11 @@
          * @param blocked Whether access to the {@link Network} is blocked due to system policy.
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONAVAILABLE_5ARGS,
+                calledByCallbackId = CALLBACK_AVAILABLE,
+                mayCall = { METHOD_ONAVAILABLE_4ARGS,
+                        METHOD_ONLOCALNETWORKINFOCHANGED,
+                        METHOD_ONBLOCKEDSTATUSCHANGED_INT })
         public final void onAvailable(@NonNull Network network,
                 @NonNull NetworkCapabilities networkCapabilities,
                 @NonNull LinkProperties linkProperties,
@@ -3993,6 +4178,7 @@
             if (null != localInfo) onLocalNetworkInfoChanged(network, localInfo);
             onBlockedStatusChanged(network, blocked);
         }
+        private static final int METHOD_ONAVAILABLE_5ARGS = 2;
 
         /**
          * Legacy variant of onAvailable that takes a boolean blocked reason.
@@ -4005,6 +4191,13 @@
          *
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONAVAILABLE_4ARGS,
+                calledByCallbackId = CALLBACK_TRANSITIVE_CALLS_ONLY,
+                mayCall = { METHOD_ONAVAILABLE_1ARG,
+                        METHOD_ONNETWORKSUSPENDED,
+                        METHOD_ONCAPABILITIESCHANGED,
+                        METHOD_ONLINKPROPERTIESCHANGED
+                })
         public void onAvailable(@NonNull Network network,
                 @NonNull NetworkCapabilities networkCapabilities,
                 @NonNull LinkProperties linkProperties,
@@ -4018,6 +4211,7 @@
             onLinkPropertiesChanged(network, linkProperties);
             // No call to onBlockedStatusChanged here. That is done by the caller.
         }
+        private static final int METHOD_ONAVAILABLE_4ARGS = 3;
 
         /**
          * Called when the framework connects and has declared a new network ready for use.
@@ -4048,7 +4242,10 @@
          *
          * @param network The {@link Network} of the satisfying network.
          */
+        @FilteredCallback(methodId = METHOD_ONAVAILABLE_1ARG,
+                calledByCallbackId = CALLBACK_TRANSITIVE_CALLS_ONLY)
         public void onAvailable(@NonNull Network network) {}
+        private static final int METHOD_ONAVAILABLE_1ARG = 4;
 
         /**
          * Called when the network is about to be lost, typically because there are no outstanding
@@ -4067,7 +4264,9 @@
          *                    connected for graceful handover; note that the network may still
          *                    suffer a hard loss at any time.
          */
+        @FilteredCallback(methodId = METHOD_ONLOSING, calledByCallbackId = CALLBACK_LOSING)
         public void onLosing(@NonNull Network network, int maxMsToLive) {}
+        private static final int METHOD_ONLOSING = 5;
 
         /**
          * Called when a network disconnects or otherwise no longer satisfies this request or
@@ -4088,7 +4287,9 @@
          *
          * @param network The {@link Network} lost.
          */
+        @FilteredCallback(methodId = METHOD_ONLOST, calledByCallbackId = CALLBACK_LOST)
         public void onLost(@NonNull Network network) {}
+        private static final int METHOD_ONLOST = 6;
 
         /**
          * Called if no network is found within the timeout time specified in
@@ -4098,7 +4299,9 @@
          * {@link NetworkRequest} will have already been removed and released, as if
          * {@link #unregisterNetworkCallback(NetworkCallback)} had been called.
          */
+        @FilteredCallback(methodId = METHOD_ONUNAVAILABLE, calledByCallbackId = CALLBACK_UNAVAIL)
         public void onUnavailable() {}
+        private static final int METHOD_ONUNAVAILABLE = 7;
 
         /**
          * Called when the network corresponding to this request changes capabilities but still
@@ -4115,8 +4318,11 @@
          * @param networkCapabilities The new {@link NetworkCapabilities} for this
          *                            network.
          */
+        @FilteredCallback(methodId = METHOD_ONCAPABILITIESCHANGED,
+                calledByCallbackId = CALLBACK_CAP_CHANGED)
         public void onCapabilitiesChanged(@NonNull Network network,
                 @NonNull NetworkCapabilities networkCapabilities) {}
+        private static final int METHOD_ONCAPABILITIESCHANGED = 8;
 
         /**
          * Called when the network corresponding to this request changes {@link LinkProperties}.
@@ -4131,8 +4337,11 @@
          * @param network The {@link Network} whose link properties have changed.
          * @param linkProperties The new {@link LinkProperties} for this network.
          */
+        @FilteredCallback(methodId = METHOD_ONLINKPROPERTIESCHANGED,
+                calledByCallbackId = CALLBACK_IP_CHANGED)
         public void onLinkPropertiesChanged(@NonNull Network network,
                 @NonNull LinkProperties linkProperties) {}
+        private static final int METHOD_ONLINKPROPERTIESCHANGED = 9;
 
         /**
          * Called when there is a change in the {@link LocalNetworkInfo} for this network.
@@ -4144,8 +4353,11 @@
          * @param localNetworkInfo the new {@link LocalNetworkInfo} for this network.
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONLOCALNETWORKINFOCHANGED,
+                calledByCallbackId = CALLBACK_LOCAL_NETWORK_INFO_CHANGED)
         public void onLocalNetworkInfoChanged(@NonNull Network network,
                 @NonNull LocalNetworkInfo localNetworkInfo) {}
+        private static final int METHOD_ONLOCALNETWORKINFOCHANGED = 10;
 
         /**
          * Called when the network the framework connected to for this request suspends data
@@ -4164,7 +4376,10 @@
          *
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONNETWORKSUSPENDED,
+                calledByCallbackId = CALLBACK_SUSPENDED)
         public void onNetworkSuspended(@NonNull Network network) {}
+        private static final int METHOD_ONNETWORKSUSPENDED = 11;
 
         /**
          * Called when the network the framework connected to for this request
@@ -4178,7 +4393,9 @@
          *
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONNETWORKRESUMED, calledByCallbackId = CALLBACK_RESUMED)
         public void onNetworkResumed(@NonNull Network network) {}
+        private static final int METHOD_ONNETWORKRESUMED = 12;
 
         /**
          * Called when access to the specified network is blocked or unblocked.
@@ -4191,7 +4408,10 @@
          * @param network The {@link Network} whose blocked status has changed.
          * @param blocked The blocked status of this {@link Network}.
          */
+        @FilteredCallback(methodId = METHOD_ONBLOCKEDSTATUSCHANGED_BOOL,
+                calledByCallbackId = CALLBACK_TRANSITIVE_CALLS_ONLY)
         public void onBlockedStatusChanged(@NonNull Network network, boolean blocked) {}
+        private static final int METHOD_ONBLOCKEDSTATUSCHANGED_BOOL = 13;
 
         /**
          * Called when access to the specified network is blocked or unblocked, or the reason for
@@ -4209,10 +4429,14 @@
          * @param blocked The blocked status of this {@link Network}.
          * @hide
          */
+        @FilteredCallback(methodId = METHOD_ONBLOCKEDSTATUSCHANGED_INT,
+                calledByCallbackId = CALLBACK_BLK_CHANGED,
+                mayCall = { METHOD_ONBLOCKEDSTATUSCHANGED_BOOL })
         @SystemApi(client = MODULE_LIBRARIES)
         public void onBlockedStatusChanged(@NonNull Network network, @BlockedReason int blocked) {
             onBlockedStatusChanged(network, blocked != 0);
         }
+        private static final int METHOD_ONBLOCKEDSTATUSCHANGED_INT = 14;
 
         private NetworkRequest networkRequest;
         private final int mFlags;
@@ -4240,6 +4464,7 @@
         }
     }
 
+    private static final int CALLBACK_TRANSITIVE_CALLS_ONLY     = 0;
     /** @hide */
     public static final int CALLBACK_PRECHECK                   = 1;
     /** @hide */
@@ -4265,9 +4490,11 @@
     /** @hide */
     public static final int CALLBACK_LOCAL_NETWORK_INFO_CHANGED = 12;
 
+
     /** @hide */
     public static String getCallbackName(int whichCallback) {
         switch (whichCallback) {
+            case CALLBACK_TRANSITIVE_CALLS_ONLY: return "CALLBACK_TRANSITIVE_CALLS_ONLY";
             case CALLBACK_PRECHECK:     return "CALLBACK_PRECHECK";
             case CALLBACK_AVAILABLE:    return "CALLBACK_AVAILABLE";
             case CALLBACK_LOSING:       return "CALLBACK_LOSING";
@@ -4285,6 +4512,68 @@
         }
     }
 
+    /** @hide */
+    @VisibleForTesting
+    public static class NetworkCallbackMethod {
+        @NonNull
+        public final String mName;
+        @NonNull
+        public final Class<?>[] mParameterTypes;
+        // Bitmask of CALLBACK_* that may transitively call this method.
+        public final int mCallbacksCallingThisMethod;
+
+        public NetworkCallbackMethod(@NonNull String name, @NonNull Class<?>[] parameterTypes,
+                int callbacksCallingThisMethod) {
+            mName = name;
+            mParameterTypes = parameterTypes;
+            mCallbacksCallingThisMethod = callbacksCallingThisMethod;
+        }
+    }
+
+    // Holder class for the list of NetworkCallbackMethod. This ensures the list is only created
+    // once on first usage, and not just on ConnectivityManager class initialization.
+    /** @hide */
+    @VisibleForTesting
+    public static class NetworkCallbackMethodsHolder {
+        public static final NetworkCallbackMethod[] NETWORK_CB_METHODS =
+                new NetworkCallbackMethod[] {
+                        method("onPreCheck", 1 << CALLBACK_PRECHECK, Network.class),
+                        // Note the final overload of onAvailable is not included, since it cannot
+                        // match any overridden method.
+                        method("onAvailable", 1 << CALLBACK_AVAILABLE, Network.class),
+                        method("onAvailable", 1 << CALLBACK_AVAILABLE,
+                                Network.class, NetworkCapabilities.class,
+                                LinkProperties.class, boolean.class),
+                        method("onLosing", 1 << CALLBACK_LOSING, Network.class, int.class),
+                        method("onLost", 1 << CALLBACK_LOST, Network.class),
+                        method("onUnavailable", 1 << CALLBACK_UNAVAIL),
+                        method("onCapabilitiesChanged",
+                                1 << CALLBACK_CAP_CHANGED | 1 << CALLBACK_AVAILABLE,
+                                Network.class, NetworkCapabilities.class),
+                        method("onLinkPropertiesChanged",
+                                1 << CALLBACK_IP_CHANGED | 1 << CALLBACK_AVAILABLE,
+                                Network.class, LinkProperties.class),
+                        method("onLocalNetworkInfoChanged",
+                                1 << CALLBACK_LOCAL_NETWORK_INFO_CHANGED | 1 << CALLBACK_AVAILABLE,
+                                Network.class, LocalNetworkInfo.class),
+                        method("onNetworkSuspended",
+                                1 << CALLBACK_SUSPENDED | 1 << CALLBACK_AVAILABLE, Network.class),
+                        method("onNetworkResumed",
+                                1 << CALLBACK_RESUMED, Network.class),
+                        method("onBlockedStatusChanged",
+                                1 << CALLBACK_BLK_CHANGED | 1 << CALLBACK_AVAILABLE,
+                                Network.class, boolean.class),
+                        method("onBlockedStatusChanged",
+                                1 << CALLBACK_BLK_CHANGED | 1 << CALLBACK_AVAILABLE,
+                                Network.class, int.class),
+                };
+
+        private static NetworkCallbackMethod method(
+                String name, int callbacksCallingThisMethod, Class<?>... args) {
+            return new NetworkCallbackMethod(name, args, callbacksCallingThisMethod);
+        }
+    }
+
     private static class CallbackHandler extends Handler {
         private static final String TAG = "ConnectivityManager.CallbackHandler";
         private static final boolean DBG = false;
@@ -4404,6 +4693,14 @@
         if (reqType != TRACK_DEFAULT && reqType != TRACK_SYSTEM_DEFAULT && need == null) {
             throw new IllegalArgumentException("null NetworkCapabilities");
         }
+
+
+        final boolean useDeclaredMethods = isFeatureEnabled(
+                FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS);
+        // Set all bits if the feature is disabled
+        int declaredMethodsFlag = useDeclaredMethods
+                ? tryGetDeclaredMethodsFlag(callback)
+                : NetworkCallback.DECLARED_METHODS_ALL;
         final NetworkRequest request;
         final String callingPackageName = mContext.getOpPackageName();
         try {
@@ -4420,11 +4717,12 @@
                 if (reqType == LISTEN) {
                     request = mService.listenForNetwork(
                             need, messenger, binder, callbackFlags, callingPackageName,
-                            getAttributionTag());
+                            getAttributionTag(), declaredMethodsFlag);
                 } else {
                     request = mService.requestNetwork(
                             asUid, need, reqType.ordinal(), messenger, timeoutMs, binder,
-                            legacyType, callbackFlags, callingPackageName, getAttributionTag());
+                            legacyType, callbackFlags, callingPackageName, getAttributionTag(),
+                            declaredMethodsFlag);
                 }
                 if (request != null) {
                     sCallbacks.put(request, callback);
@@ -4439,6 +4737,122 @@
         return request;
     }
 
+    private int tryGetDeclaredMethodsFlag(@NonNull NetworkCallback cb) {
+        if (!cb.mConstructorWasCalled) {
+            // Do not use the optimization if the callback was created via reflection or mocking,
+            // as for example with dexmaker-mockito-inline methods will be instrumented without
+            // using subclasses. This does not catch all cases as it is still possible to call the
+            // constructor when creating mocks, but by default constructors are not called in that
+            // case.
+            return NetworkCallback.DECLARED_METHODS_ALL;
+        }
+        try {
+            return getDeclaredMethodsFlag(cb.getClass());
+        } catch (LinkageError e) {
+            // This may happen if some methods reference inaccessible classes in their arguments
+            // (for example b/261807130).
+            Log.w(TAG, "Could not get methods from NetworkCallback class", e);
+            // Fall through
+        } catch (Throwable e) {
+            // Log.wtf would be best but this is in app process, so the TerribleFailureHandler may
+            // have unknown effects, possibly crashing the app (default behavior on eng builds or
+            // if the WTF_IS_FATAL setting is set).
+            Log.e(TAG, "Unexpected error while getting methods from NetworkCallback class", e);
+            // Fall through
+        }
+        return NetworkCallback.DECLARED_METHODS_ALL;
+    }
+
+    private static int getDeclaredMethodsFlag(@NonNull Class<? extends NetworkCallback> clazz) {
+        final Integer cachedFlags = sMethodFlagsCache.get(clazz);
+        // As this is not synchronized, it is possible that this method will calculate the
+        // flags for a given class multiple times, but that is fine. LruCache itself is thread-safe.
+        if (cachedFlags != null) {
+            return cachedFlags;
+        }
+
+        int flag = 0;
+        // This uses getMethods instead of getDeclaredMethods, to make sure that if A overrides B
+        // that overrides NetworkCallback, A.getMethods also returns methods declared by B.
+        for (Method classMethod : clazz.getMethods()) {
+            final Class<?> declaringClass = classMethod.getDeclaringClass();
+            if (declaringClass == NetworkCallback.class) {
+                // The callback is as defined by NetworkCallback and not overridden
+                continue;
+            }
+            if (declaringClass == Object.class) {
+                // Optimization: no need to try to match callbacks for methods declared by Object
+                continue;
+            }
+            flag |= getCallbackIdsCallingThisMethod(classMethod);
+        }
+
+        if (flag == 0) {
+            // dexmaker-mockito-inline (InlineDexmakerMockMaker), for example for mockito-extended,
+            // modifies bytecode of classes in-place to add hooks instead of creating subclasses,
+            // which would not be detected. When no method is found, fall back to enabling callbacks
+            // for all methods.
+            // This will not catch the case where both NetworkCallback bytecode is modified and a
+            // subclass of NetworkCallback that has some overridden methods are used. But this kind
+            // of bytecode injection is only possible in debuggable processes, with a JVMTI debug
+            // agent attached, so it should not cause real issues.
+            // There may be legitimate cases where an empty callback is filed with no method
+            // overridden, for example requestNetwork(requestForCell, new NetworkCallback()) which
+            // would ensure that one cell network stays up. But there is no way to differentiate
+            // such NetworkCallbacks from a mock that called the constructor, so this code will
+            // register the callback with DECLARED_METHODS_ALL and turn off the optimization in that
+            // case. Apps are not expected to do this often anyway since the usefulness is very
+            // limited.
+            flag = NetworkCallback.DECLARED_METHODS_ALL;
+        }
+        sMethodFlagsCache.put(clazz, flag);
+        return flag;
+    }
+
+    /**
+     * Find out which of the base methods in NetworkCallback will call this method.
+     *
+     * For example, in the case of onLinkPropertiesChanged, this will be
+     * (1 << CALLBACK_IP_CHANGED) | (1 << CALLBACK_AVAILABLE).
+     */
+    private static int getCallbackIdsCallingThisMethod(@NonNull Method method) {
+        for (NetworkCallbackMethod baseMethod : NetworkCallbackMethodsHolder.NETWORK_CB_METHODS) {
+            if (!baseMethod.mName.equals(method.getName())) {
+                continue;
+            }
+            Class<?>[] methodParams = method.getParameterTypes();
+
+            // As per JLS 8.4.8.1., a method m1 must have a subsignature of method m2 to override
+            // it. And as per JLS 8.4.2, this means the erasure of the signature of m2 must be the
+            // same as the signature of m1. Since type erasure is done at compile time, with
+            // reflection the erased types are already observed, so the (erased) parameter types
+            // must be equal.
+            // So for example a method that is identical to a NetworkCallback method, except with
+            // one parameter being a subclass of the parameter in the original method, will never
+            // be called since it is not an override (the erasure of the arguments are not the same)
+            // Therefore, the method is an override only if methodParams is exactly equal to
+            // the base method's parameter types.
+            if (Arrays.equals(baseMethod.mParameterTypes, methodParams)) {
+                return baseMethod.mCallbacksCallingThisMethod;
+            }
+        }
+        return 0;
+    }
+
+    private boolean isFeatureEnabled(@ConnectivityManagerFeature long connectivityManagerFeature) {
+        synchronized (mEnabledConnectivityManagerFeaturesLock) {
+            if (mEnabledConnectivityManagerFeatures == null) {
+                try {
+                    mEnabledConnectivityManagerFeatures =
+                            mService.getEnabledConnectivityManagerFeatures();
+                } catch (RemoteException e) {
+                    e.rethrowFromSystemServer();
+                }
+            }
+            return (mEnabledConnectivityManagerFeatures & connectivityManagerFeature) != 0;
+        }
+    }
+
     private NetworkRequest sendRequestForNetwork(NetworkCapabilities need, NetworkCallback callback,
             int timeoutMs, NetworkRequest.Type reqType, int legacyType, CallbackHandler handler) {
         return sendRequestForNetwork(Process.INVALID_UID, need, callback, timeoutMs, reqType,
@@ -6065,7 +6479,7 @@
     })
     public void addUidToMeteredNetworkAllowList(final int uid) {
         try {
-            mService.updateMeteredNetworkAllowList(uid, true /* add */);
+            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_ALLOW);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -6088,7 +6502,7 @@
     })
     public void removeUidFromMeteredNetworkAllowList(final int uid) {
         try {
-            mService.updateMeteredNetworkAllowList(uid, false /* remove */);
+            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_DENY);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -6098,10 +6512,17 @@
      * Adds the specified UID to the list of UIDs that are not allowed to use background data on
      * metered networks. Takes precedence over {@link #addUidToMeteredNetworkAllowList}.
      *
+     * On V+, {@link #setUidFirewallRule} should be used with
+     * {@link #FIREWALL_CHAIN_METERED_DENY_USER} or {@link #FIREWALL_CHAIN_METERED_DENY_ADMIN}
+     * based on the reason so that users can receive {@link #BLOCKED_METERED_REASON_USER_RESTRICTED}
+     * or {@link #BLOCKED_METERED_REASON_ADMIN_DISABLED}, respectively.
+     * This API always uses {@link #FIREWALL_CHAIN_METERED_DENY_USER}.
+     *
      * @param uid uid of target app
      * @throws IllegalStateException if updating deny list failed.
      * @hide
      */
+    // TODO(b/332649177): Deprecate this API after V
     @SystemApi(client = MODULE_LIBRARIES)
     @RequiresPermission(anyOf = {
             android.Manifest.permission.NETWORK_SETTINGS,
@@ -6110,7 +6531,7 @@
     })
     public void addUidToMeteredNetworkDenyList(final int uid) {
         try {
-            mService.updateMeteredNetworkDenyList(uid, true /* add */);
+            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_DENY);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -6121,10 +6542,17 @@
      * networks if background data is not restricted. The deny list takes precedence over the
      * allow list.
      *
+     * On V+, {@link #setUidFirewallRule} should be used with
+     * {@link #FIREWALL_CHAIN_METERED_DENY_USER} or {@link #FIREWALL_CHAIN_METERED_DENY_ADMIN}
+     * based on the reason so that users can receive {@link #BLOCKED_METERED_REASON_USER_RESTRICTED}
+     * or {@link #BLOCKED_METERED_REASON_ADMIN_DISABLED}, respectively.
+     * This API always uses {@link #FIREWALL_CHAIN_METERED_DENY_USER}.
+     *
      * @param uid uid of target app
      * @throws IllegalStateException if updating deny list failed.
      * @hide
      */
+    // TODO(b/332649177): Deprecate this API after V
     @SystemApi(client = MODULE_LIBRARIES)
     @RequiresPermission(anyOf = {
             android.Manifest.permission.NETWORK_SETTINGS,
@@ -6133,7 +6561,7 @@
     })
     public void removeUidFromMeteredNetworkDenyList(final int uid) {
         try {
-            mService.updateMeteredNetworkDenyList(uid, false /* remove */);
+            mService.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_ALLOW);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -6191,6 +6619,10 @@
     /**
      * Enables or disables the specified firewall chain.
      *
+     * Note that metered firewall chains can not be controlled by this API.
+     * See {@link #FIREWALL_CHAIN_METERED_ALLOW}, {@link #FIREWALL_CHAIN_METERED_DENY_USER}, and
+     * {@link #FIREWALL_CHAIN_METERED_DENY_ADMIN} for more detail.
+     *
      * @param chain target chain.
      * @param enable whether the chain should be enabled.
      * @throws UnsupportedOperationException if called on pre-T devices.
@@ -6284,15 +6716,16 @@
     @RequiresPermission(NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK)
     public boolean isUidNetworkingBlocked(int uid, boolean isNetworkMetered) {
         if (!SdkLevel.isAtLeastU()) {
-            Log.wtf(TAG, "isUidNetworkingBlocked is not supported on pre-U devices");
+            throw new IllegalStateException(
+                    "isUidNetworkingBlocked is not supported on pre-U devices");
         }
-        final BpfNetMapsReader reader = BpfNetMapsReader.getInstance();
+        final NetworkStackBpfNetMaps reader = NetworkStackBpfNetMaps.getInstance();
         // Note that before V, the data saver status in bpf is written by ConnectivityService
         // when receiving {@link #ACTION_RESTRICT_BACKGROUND_CHANGED}. Thus,
         // the status is not synchronized.
         // On V+, the data saver status is set by platform code when enabling/disabling
         // data saver, which is synchronized.
-        return reader.isUidNetworkingBlocked(uid, isNetworkMetered, reader.getDataSaverEnabled());
+        return reader.isUidNetworkingBlocked(uid, isNetworkMetered);
     }
 
     /** @hide */
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index d3a02b9..988cc92 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -153,7 +153,8 @@
 
     NetworkRequest requestNetwork(int uid, in NetworkCapabilities networkCapabilities, int reqType,
             in Messenger messenger, int timeoutSec, in IBinder binder, int legacy,
-            int callbackFlags, String callingPackageName, String callingAttributionTag);
+            int callbackFlags, String callingPackageName, String callingAttributionTag,
+            int declaredMethodsFlag);
 
     NetworkRequest pendingRequestForNetwork(in NetworkCapabilities networkCapabilities,
             in PendingIntent operation, String callingPackageName, String callingAttributionTag);
@@ -162,7 +163,7 @@
 
     NetworkRequest listenForNetwork(in NetworkCapabilities networkCapabilities,
             in Messenger messenger, in IBinder binder, int callbackFlags, String callingPackageName,
-            String callingAttributionTag);
+            String callingAttributionTag, int declaredMethodsFlag);
 
     void pendingListenForNetwork(in NetworkCapabilities networkCapabilities,
             in PendingIntent operation, String callingPackageName,
@@ -242,10 +243,6 @@
 
     void setDataSaverEnabled(boolean enable);
 
-    void updateMeteredNetworkAllowList(int uid, boolean add);
-
-    void updateMeteredNetworkDenyList(int uid, boolean add);
-
     void setUidFirewallRule(int chain, int uid, int rule);
 
     int getUidFirewallRule(int chain, int uid);
@@ -263,4 +260,6 @@
     void setTestLowTcpPollingTimerForKeepalive(long timeMs);
 
     IBinder getRoutingCoordinatorService();
+
+    long getEnabledConnectivityManagerFeatures();
 }
diff --git a/framework/src/android/net/NetworkCapabilities.java b/framework/src/android/net/NetworkCapabilities.java
index 84a0d29..6a14bde 100644
--- a/framework/src/android/net/NetworkCapabilities.java
+++ b/framework/src/android/net/NetworkCapabilities.java
@@ -36,9 +36,11 @@
 import android.os.Process;
 import android.text.TextUtils;
 import android.util.ArraySet;
+import android.util.Log;
 import android.util.Range;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.BitUtils;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.NetworkCapabilitiesUtils;
@@ -134,6 +136,8 @@
                 "com.android.net.flags.request_restricted_wifi";
         static final String SUPPORT_TRANSPORT_SATELLITE =
                 "com.android.net.flags.support_transport_satellite";
+        static final String NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED =
+                "com.android.net.flags.net_capability_not_bandwidth_constrained";
     }
 
     /**
@@ -458,6 +462,7 @@
             NET_CAPABILITY_PRIORITIZE_LATENCY,
             NET_CAPABILITY_PRIORITIZE_BANDWIDTH,
             NET_CAPABILITY_LOCAL_NETWORK,
+            NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED,
     })
     public @interface NetCapability { }
 
@@ -740,7 +745,26 @@
     @FlaggedApi(Flags.FLAG_NET_CAPABILITY_LOCAL_NETWORK)
     public static final int NET_CAPABILITY_LOCAL_NETWORK = 36;
 
-    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_LOCAL_NETWORK;
+    /**
+     * Indicates that this is not a bandwidth-constrained network.
+     *
+     * Starting from {@link Build.VERSION_CODES.VANILLA_ICE_CREAM}, this capability is by default
+     * set in {@link NetworkRequest}s and true for most networks.
+     *
+     * If a network lacks this capability, it is bandwidth-constrained. Bandwidth constrained
+     * networks cannot support high-bandwidth data transfers and applications that request and use
+     * them must ensure that they limit bandwidth usage to below the values returned by
+     * {@link #getLinkDownstreamBandwidthKbps()} and {@link #getLinkUpstreamBandwidthKbps()} and
+     * limit the frequency of their network usage. If applications perform high-bandwidth data
+     * transfers on constrained networks or perform network access too frequently, the system may
+     * block the app's access to the network. The system may take other measures to reduce network
+     * usage on constrained networks, such as disabling network access to apps that are not in the
+     * foreground.
+     */
+    @FlaggedApi(Flags.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED)
+    public static final int NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED = 37;
+
+    private static final int MAX_NET_CAPABILITY = NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED;
 
     // Set all bits up to the MAX_NET_CAPABILITY-th bit
     private static final long ALL_VALID_CAPABILITIES = (2L << MAX_NET_CAPABILITY) - 1;
@@ -749,22 +773,22 @@
      * Network capabilities that are expected to be mutable, i.e., can change while a particular
      * network is connected.
      */
-    private static final long MUTABLE_CAPABILITIES = BitUtils.packBitList(
+    private static final long MUTABLE_CAPABILITIES =
             // TRUSTED can change when user explicitly connects to an untrusted network in Settings.
             // http://b/18206275
-            NET_CAPABILITY_TRUSTED,
-            NET_CAPABILITY_VALIDATED,
-            NET_CAPABILITY_CAPTIVE_PORTAL,
-            NET_CAPABILITY_NOT_ROAMING,
-            NET_CAPABILITY_FOREGROUND,
-            NET_CAPABILITY_NOT_CONGESTED,
-            NET_CAPABILITY_NOT_SUSPENDED,
-            NET_CAPABILITY_PARTIAL_CONNECTIVITY,
-            NET_CAPABILITY_TEMPORARILY_NOT_METERED,
-            NET_CAPABILITY_NOT_VCN_MANAGED,
+            (1L << NET_CAPABILITY_TRUSTED) |
+            (1L << NET_CAPABILITY_VALIDATED) |
+            (1L << NET_CAPABILITY_CAPTIVE_PORTAL) |
+            (1L << NET_CAPABILITY_NOT_ROAMING) |
+            (1L << NET_CAPABILITY_FOREGROUND) |
+            (1L << NET_CAPABILITY_NOT_CONGESTED) |
+            (1L << NET_CAPABILITY_NOT_SUSPENDED) |
+            (1L << NET_CAPABILITY_PARTIAL_CONNECTIVITY) |
+            (1L << NET_CAPABILITY_TEMPORARILY_NOT_METERED) |
+            (1L << NET_CAPABILITY_NOT_VCN_MANAGED) |
             // The value of NET_CAPABILITY_HEAD_UNIT is 32, which cannot use int to do bit shift,
             // otherwise there will be an overflow. Use long to do bit shift instead.
-            NET_CAPABILITY_HEAD_UNIT);
+            (1L << NET_CAPABILITY_HEAD_UNIT);
 
     /**
      * Network capabilities that are not allowed in NetworkRequests. This exists because the
@@ -784,10 +808,17 @@
     /**
      * Capabilities that are set by default when the object is constructed.
      */
-    private static final long DEFAULT_CAPABILITIES = BitUtils.packBitList(
-            NET_CAPABILITY_NOT_RESTRICTED,
-            NET_CAPABILITY_TRUSTED,
-            NET_CAPABILITY_NOT_VPN);
+    private static final long DEFAULT_CAPABILITIES;
+    static {
+        long defaultCapabilities =
+                (1L << NET_CAPABILITY_NOT_RESTRICTED)
+                | (1L << NET_CAPABILITY_TRUSTED)
+                | (1L << NET_CAPABILITY_NOT_VPN);
+        if (SdkLevel.isAtLeastV()) {
+            defaultCapabilities |= (1L << NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);
+        }
+        DEFAULT_CAPABILITIES = defaultCapabilities;
+    }
 
     /**
      * Capabilities that are managed by ConnectivityService.
@@ -795,11 +826,10 @@
      */
     @VisibleForTesting
     public static final long CONNECTIVITY_MANAGED_CAPABILITIES =
-            BitUtils.packBitList(
-                    NET_CAPABILITY_VALIDATED,
-                    NET_CAPABILITY_CAPTIVE_PORTAL,
-                    NET_CAPABILITY_FOREGROUND,
-                    NET_CAPABILITY_PARTIAL_CONNECTIVITY);
+            (1L << NET_CAPABILITY_VALIDATED) |
+            (1L << NET_CAPABILITY_CAPTIVE_PORTAL) |
+            (1L << NET_CAPABILITY_FOREGROUND) |
+            (1L << NET_CAPABILITY_PARTIAL_CONNECTIVITY);
 
     /**
      * Capabilities that are allowed for all test networks. This list must be set so that it is safe
@@ -808,15 +838,16 @@
      * IMS, SUPL, etc.
      */
     private static final long TEST_NETWORKS_ALLOWED_CAPABILITIES =
-            BitUtils.packBitList(
-            NET_CAPABILITY_NOT_METERED,
-            NET_CAPABILITY_TEMPORARILY_NOT_METERED,
-            NET_CAPABILITY_NOT_RESTRICTED,
-            NET_CAPABILITY_NOT_VPN,
-            NET_CAPABILITY_NOT_ROAMING,
-            NET_CAPABILITY_NOT_CONGESTED,
-            NET_CAPABILITY_NOT_SUSPENDED,
-            NET_CAPABILITY_NOT_VCN_MANAGED);
+            (1L << NET_CAPABILITY_NOT_METERED) |
+            (1L << NET_CAPABILITY_TEMPORARILY_NOT_METERED) |
+            (1L << NET_CAPABILITY_NOT_RESTRICTED) |
+            (1L << NET_CAPABILITY_NOT_VPN) |
+            (1L << NET_CAPABILITY_NOT_ROAMING) |
+            (1L << NET_CAPABILITY_NOT_CONGESTED) |
+            (1L << NET_CAPABILITY_NOT_SUSPENDED) |
+            (1L << NET_CAPABILITY_NOT_VCN_MANAGED) |
+            (1L << NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);
+
 
     /**
      * Extra allowed capabilities for test networks that do not have TRANSPORT_CELLULAR. Test
@@ -824,7 +855,9 @@
      * the risk of being used by running apps.
      */
     private static final long TEST_NETWORKS_EXTRA_ALLOWED_CAPABILITIES_ON_NON_CELL =
-            BitUtils.packBitList(NET_CAPABILITY_CBS, NET_CAPABILITY_DUN, NET_CAPABILITY_RCS);
+            (1L << NET_CAPABILITY_CBS) |
+            (1L << NET_CAPABILITY_DUN) |
+            (1L << NET_CAPABILITY_RCS);
 
     /**
      * Adds the given capability to this {@code NetworkCapability} instance.
@@ -843,7 +876,10 @@
         // If the given capability was previously added to the list of forbidden capabilities
         // then the capability will also be removed from the list of forbidden capabilities.
         // TODO: Add forbidden capabilities to the public API
-        checkValidCapability(capability);
+        if (!isValidCapability(capability)) {
+            Log.e(TAG, "addCapability is called with invalid capability: " + capability);
+            return this;
+        }
         mNetworkCapabilities |= 1L << capability;
         // remove from forbidden capability list
         mForbiddenNetworkCapabilities &= ~(1L << capability);
@@ -864,7 +900,10 @@
      * @hide
      */
     public void addForbiddenCapability(@NetCapability int capability) {
-        checkValidCapability(capability);
+        if (!isValidCapability(capability)) {
+            Log.e(TAG, "addForbiddenCapability is called with invalid capability: " + capability);
+            return;
+        }
         mForbiddenNetworkCapabilities |= 1L << capability;
         mNetworkCapabilities &= ~(1L << capability);  // remove from requested capabilities
     }
@@ -878,7 +917,10 @@
      * @hide
      */
     public @NonNull NetworkCapabilities removeCapability(@NetCapability int capability) {
-        checkValidCapability(capability);
+        if (!isValidCapability(capability)) {
+            Log.e(TAG, "removeCapability is called with invalid capability: " + capability);
+            return this;
+        }
         final long mask = ~(1L << capability);
         mNetworkCapabilities &= mask;
         return this;
@@ -893,7 +935,11 @@
      * @hide
      */
     public @NonNull NetworkCapabilities removeForbiddenCapability(@NetCapability int capability) {
-        checkValidCapability(capability);
+        if (!isValidCapability(capability)) {
+            Log.e(TAG,
+                    "removeForbiddenCapability is called with invalid capability: " + capability);
+            return this;
+        }
         mForbiddenNetworkCapabilities &= ~(1L << capability);
         return this;
     }
@@ -1174,7 +1220,7 @@
      * @hide
      */
     public void maybeMarkCapabilitiesRestricted() {
-        if (NetworkCapabilitiesUtils.inferRestrictedCapability(this)) {
+        if (NetworkCapabilitiesUtils.inferRestrictedCapability(mNetworkCapabilities)) {
             removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
         }
     }
@@ -1368,12 +1414,11 @@
      * Allowed transports on an unrestricted test network (in addition to TRANSPORT_TEST).
      */
     private static final long UNRESTRICTED_TEST_NETWORKS_ALLOWED_TRANSPORTS =
-            BitUtils.packBitList(
-                    TRANSPORT_TEST,
-                    // Test eth networks are created with EthernetManager#setIncludeTestInterfaces
-                    TRANSPORT_ETHERNET,
-                    // Test VPN networks can be created but their UID ranges must be empty.
-                    TRANSPORT_VPN);
+            (1L << TRANSPORT_TEST) |
+            // Test eth networks are created with EthernetManager#setIncludeTestInterfaces
+            (1L << TRANSPORT_ETHERNET) |
+            // Test VPN networks can be created but their UID ranges must be empty.
+            (1L << TRANSPORT_VPN);
 
     /**
      * Adds the given transport type to this {@code NetworkCapability} instance.
@@ -1775,8 +1820,7 @@
                 // use the same specifier, TelephonyNetworkSpecifier.
                 && mTransportTypes != (1L << TRANSPORT_TEST)
                 && Long.bitCount(mTransportTypes & ~(1L << TRANSPORT_TEST)) != 1
-                && (mTransportTypes & ~(1L << TRANSPORT_TEST))
-                != (1 << TRANSPORT_CELLULAR | 1 << TRANSPORT_SATELLITE)) {
+                && !specifierAcceptableForMultipleTransports(mTransportTypes)) {
             throw new IllegalStateException("Must have a single non-test transport specified to "
                     + "use setNetworkSpecifier");
         }
@@ -1786,6 +1830,12 @@
         return this;
     }
 
+    private boolean specifierAcceptableForMultipleTransports(long transportTypes) {
+        return (transportTypes & ~(1L << TRANSPORT_TEST))
+                // Cellular and satellite use the same NetworkSpecifier.
+                == (1 << TRANSPORT_CELLULAR | 1 << TRANSPORT_SATELLITE);
+    }
+
     /**
      * Sets the optional transport specific information.
      *
@@ -2585,6 +2635,7 @@
             case NET_CAPABILITY_PRIORITIZE_LATENCY:          return "PRIORITIZE_LATENCY";
             case NET_CAPABILITY_PRIORITIZE_BANDWIDTH:        return "PRIORITIZE_BANDWIDTH";
             case NET_CAPABILITY_LOCAL_NETWORK:        return "LOCAL_NETWORK";
+            case NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED:    return "NOT_BANDWIDTH_CONSTRAINED";
             default:                                  return Integer.toString(capability);
         }
     }
@@ -2628,12 +2679,6 @@
         return capability >= 0 && capability <= MAX_NET_CAPABILITY;
     }
 
-    private static void checkValidCapability(@NetworkCapabilities.NetCapability int capability) {
-        if (!isValidCapability(capability)) {
-            throw new IllegalArgumentException("NetworkCapability " + capability + " out of range");
-        }
-    }
-
     private static boolean isValidEnterpriseId(
             @NetworkCapabilities.EnterpriseId int enterpriseId) {
         return enterpriseId >= NET_ENTERPRISE_ID_1
diff --git a/framework/src/android/net/NetworkRequest.java b/framework/src/android/net/NetworkRequest.java
index 4de02ac..502ac6f 100644
--- a/framework/src/android/net/NetworkRequest.java
+++ b/framework/src/android/net/NetworkRequest.java
@@ -20,7 +20,7 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_DUN;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_FOREGROUND;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
-import static android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
@@ -41,8 +41,6 @@
 import android.annotation.SuppressLint;
 import android.annotation.SystemApi;
 import android.compat.annotation.UnsupportedAppUsage;
-// TODO : replace with android.net.flags.Flags when aconfig is supported on udc-mainline-prod
-// import android.net.NetworkCapabilities.Flags;
 import android.net.NetworkCapabilities.NetCapability;
 import android.net.NetworkCapabilities.Transport;
 import android.os.Build;
@@ -289,19 +287,8 @@
                 NET_CAPABILITY_PARTIAL_CONNECTIVITY,
                 NET_CAPABILITY_TEMPORARILY_NOT_METERED,
                 NET_CAPABILITY_TRUSTED,
-                NET_CAPABILITY_VALIDATED);
-
-        /**
-         * Capabilities that are forbidden by default.
-         * Forbidden capabilities only make sense in NetworkRequest, not for network agents.
-         * Therefore these capabilities are only in NetworkRequest.
-         */
-        private static final int[] DEFAULT_FORBIDDEN_CAPABILITIES = new int[] {
-            // TODO(b/313030307): this should contain NET_CAPABILITY_LOCAL_NETWORK.
-            // We cannot currently add it because doing so would crash if the module rolls back,
-            // because JobScheduler persists NetworkRequests to disk, and existing production code
-            // does not consider LOCAL_NETWORK to be a valid capability.
-        };
+                NET_CAPABILITY_VALIDATED,
+                NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);
 
         private final NetworkCapabilities mNetworkCapabilities;
 
@@ -318,16 +305,6 @@
             // it for apps that do not have the NETWORK_SETTINGS permission.
             mNetworkCapabilities = new NetworkCapabilities();
             mNetworkCapabilities.setSingleUid(Process.myUid());
-            // Default forbidden capabilities are foremost meant to help with backward
-            // compatibility. When adding new types of network identified by a capability that
-            // might confuse older apps, a default forbidden capability will have apps not see
-            // these networks unless they explicitly ask for it.
-            // If the app called clearCapabilities() it will see everything, but then it
-            // can be argued that it's fair to send them too, since it asked for everything
-            // explicitly.
-            for (final int forbiddenCap : DEFAULT_FORBIDDEN_CAPABILITIES) {
-                mNetworkCapabilities.addForbiddenCapability(forbiddenCap);
-            }
         }
 
         /**
diff --git a/framework/src/android/net/NetworkStackBpfNetMaps.java b/framework/src/android/net/NetworkStackBpfNetMaps.java
new file mode 100644
index 0000000..b7c4e34
--- /dev/null
+++ b/framework/src/android/net/NetworkStackBpfNetMaps.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net;
+
+import static android.net.BpfNetMapsConstants.CONFIGURATION_MAP_PATH;
+import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_MAP_PATH;
+import static android.net.BpfNetMapsConstants.UID_OWNER_MAP_PATH;
+
+import android.annotation.NonNull;
+import android.annotation.RequiresApi;
+import android.os.Build;
+import android.os.ServiceSpecificException;
+import android.system.ErrnoException;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.modules.utils.build.SdkLevel;
+import com.android.net.module.util.BpfMap;
+import com.android.net.module.util.IBpfMap;
+import com.android.net.module.util.Struct.S32;
+import com.android.net.module.util.Struct.U32;
+import com.android.net.module.util.Struct.U8;
+
+/**
+ * A helper class to *read* java BpfMaps for network stack.
+ * BpfMap operations that are not used from network stack should be in
+ * {@link com.android.server.BpfNetMaps}
+ * @hide
+ */
+// NetworkStack can not use this before U due to b/326143935
+@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+public class NetworkStackBpfNetMaps {
+    private static final String TAG = NetworkStackBpfNetMaps.class.getSimpleName();
+
+    // Locally store the handle of bpf maps. The FileDescriptors are statically cached inside the
+    // BpfMap implementation.
+
+    // Bpf map to store various networking configurations, the format of the value is different
+    // for different keys. See BpfNetMapsConstants#*_CONFIGURATION_KEY for keys.
+    private final IBpfMap<S32, U32> mConfigurationMap;
+    // Bpf map to store per uid traffic control configurations.
+    // See {@link UidOwnerValue} for more detail.
+    private final IBpfMap<S32, UidOwnerValue> mUidOwnerMap;
+    private final IBpfMap<S32, U8> mDataSaverEnabledMap;
+    private final Dependencies mDeps;
+
+    private static class SingletonHolder {
+        static final NetworkStackBpfNetMaps sInstance = new NetworkStackBpfNetMaps();
+    }
+
+    @NonNull
+    public static NetworkStackBpfNetMaps getInstance() {
+        return SingletonHolder.sInstance;
+    }
+
+    private NetworkStackBpfNetMaps() {
+        this(new Dependencies());
+    }
+
+    // While the production code uses the singleton to optimize for performance and deal with
+    // concurrent access, the test needs to use a non-static approach for dependency injection and
+    // mocking virtual bpf maps.
+    @VisibleForTesting
+    public NetworkStackBpfNetMaps(@NonNull Dependencies deps) {
+        if (!SdkLevel.isAtLeastT()) {
+            throw new UnsupportedOperationException(
+                    NetworkStackBpfNetMaps.class.getSimpleName()
+                            + " is not supported below Android T");
+        }
+        mDeps = deps;
+        mConfigurationMap = mDeps.getConfigurationMap();
+        mUidOwnerMap = mDeps.getUidOwnerMap();
+        mDataSaverEnabledMap = mDeps.getDataSaverEnabledMap();
+    }
+
+    /**
+     * Dependencies of BpfNetMapReader, for injection in tests.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /** Get the configuration map. */
+        public IBpfMap<S32, U32> getConfigurationMap() {
+            try {
+                return new BpfMap<>(CONFIGURATION_MAP_PATH, BpfMap.BPF_F_RDONLY,
+                        S32.class, U32.class);
+            } catch (ErrnoException e) {
+                throw new IllegalStateException("Cannot open configuration map", e);
+            }
+        }
+
+        /** Get the uid owner map. */
+        public IBpfMap<S32, UidOwnerValue> getUidOwnerMap() {
+            try {
+                return new BpfMap<>(UID_OWNER_MAP_PATH, BpfMap.BPF_F_RDONLY,
+                        S32.class, UidOwnerValue.class);
+            } catch (ErrnoException e) {
+                throw new IllegalStateException("Cannot open uid owner map", e);
+            }
+        }
+
+        /** Get the data saver enabled map. */
+        public  IBpfMap<S32, U8> getDataSaverEnabledMap() {
+            try {
+                return new BpfMap<>(DATA_SAVER_ENABLED_MAP_PATH, BpfMap.BPF_F_RDONLY, S32.class,
+                        U8.class);
+            } catch (ErrnoException e) {
+                throw new IllegalStateException("Cannot open data saver enabled map", e);
+            }
+        }
+    }
+
+    /**
+     * Get the specified firewall chain's status.
+     *
+     * @param chain target chain
+     * @return {@code true} if chain is enabled, {@code false} if chain is not enabled.
+     * @throws UnsupportedOperationException if called on pre-T devices.
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *                                  cause of the failure.
+     */
+    public boolean isChainEnabled(final int chain) {
+        return BpfNetMapsUtils.isChainEnabled(mConfigurationMap, chain);
+    }
+
+    /**
+     * Get firewall rule of specified firewall chain on specified uid.
+     *
+     * @param chain target chain
+     * @param uid        target uid
+     * @return either {@link ConnectivityManager#FIREWALL_RULE_ALLOW} or
+     *         {@link ConnectivityManager#FIREWALL_RULE_DENY}.
+     * @throws UnsupportedOperationException if called on pre-T devices.
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *                                  cause of the failure.
+     */
+    public int getUidRule(final int chain, final int uid) {
+        return BpfNetMapsUtils.getUidRule(mUidOwnerMap, chain, uid);
+    }
+
+    /**
+     * Return whether the network is blocked by firewall chains for the given uid.
+     *
+     * Note that {@link #getDataSaverEnabled()} has a latency before V.
+     *
+     * @param uid The target uid.
+     * @param isNetworkMetered Whether the target network is metered.
+     *
+     * @return True if the network is blocked. Otherwise, false.
+     * @throws ServiceSpecificException if the read fails.
+     *
+     * @hide
+     */
+    public boolean isUidNetworkingBlocked(final int uid, boolean isNetworkMetered) {
+        return BpfNetMapsUtils.isUidNetworkingBlocked(uid, isNetworkMetered,
+                mConfigurationMap, mUidOwnerMap, mDataSaverEnabledMap);
+    }
+
+    /**
+     * Get Data Saver enabled or disabled
+     *
+     * Note that before V, the data saver status in bpf is written by ConnectivityService
+     * when receiving {@link ConnectivityManager#ACTION_RESTRICT_BACKGROUND_CHANGED}. Thus,
+     * the status is not synchronized.
+     * On V+, the data saver status is set by platform code when enabling/disabling
+     * data saver, which is synchronized.
+     *
+     * @return whether Data Saver is enabled or disabled.
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *                                  cause of the failure.
+     */
+    public boolean getDataSaverEnabled() {
+        return BpfNetMapsUtils.getDataSaverEnabled(mDataSaverEnabledMap);
+    }
+}
diff --git a/framework/src/android/net/apf/ApfCapabilities.java b/framework/src/android/net/apf/ApfCapabilities.java
index fae2499..f92cdbb 100644
--- a/framework/src/android/net/apf/ApfCapabilities.java
+++ b/framework/src/android/net/apf/ApfCapabilities.java
@@ -22,6 +22,8 @@
 import android.os.Parcel;
 import android.os.Parcelable;
 
+import java.util.Objects;
+
 /**
  * APF program support capabilities. APF stands for Android Packet Filtering and it is a flexible
  * way to drop unwanted network packets to save power.
@@ -102,15 +104,22 @@
                 && apfPacketFormat == other.apfPacketFormat;
     }
 
+    @Override
+    public int hashCode() {
+        // hashCode it is not implemented in R. Therefore it would be dangerous for
+        // NetworkStack to depend on it.
+        return Objects.hash(apfVersionSupported, maximumApfProgramSize, apfPacketFormat);
+    }
+
     /**
      * Determines whether the APF interpreter advertises support for the data buffer access opcodes
      * LDDW (LoaD Data Word) and STDW (STore Data Word). Full LDDW (LoaD Data Word) and
-     * STDW (STore Data Word) support is present from APFv4 on.
+     * STDW (STore Data Word) support is present from APFv3 on.
      *
      * @return {@code true} if the IWifiStaIface#readApfPacketFilterData is supported.
      */
     public boolean hasDataAccess() {
-        return apfVersionSupported >= 4;
+        return apfVersionSupported > 2;
     }
 
     /**
diff --git a/framework/src/android/net/connectivity/ConnectivityCompatChanges.java b/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
index dfe5867..51df8ab 100644
--- a/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
+++ b/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
@@ -84,6 +84,57 @@
     @ChangeId
     @EnabledAfter(targetSdkVersion = Build.VERSION_CODES.TIRAMISU)
     public static final long ENABLE_PLATFORM_MDNS_BACKEND = 270306772L;
+
+    /**
+     * Apps targeting Android V or higher receive network callbacks from local networks as default
+     *
+     * Apps targeting lower than {@link android.os.Build.VERSION_CODES.VANILLA_ICE_CREAM} need
+     * to add {@link android.net.NetworkCapabilities#NET_CAPABILITY_LOCAL_NETWORK} to the
+     * {@link android.net.NetworkCapabilities} of the {@link android.net.NetworkRequest} to receive
+     * {@link android.net.ConnectivityManager.NetworkCallback} from local networks.
+     *
+     * @hide
+     */
+    @ChangeId
+    @EnabledAfter(targetSdkVersion = Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    public static final long ENABLE_MATCH_LOCAL_NETWORK = 319212206L;
+
+    /**
+     * On Android {@link android.os.Build.VERSION_CODES.VANILLA_ICE_CREAM} or higher releases,
+     * network access from apps targeting Android 36 or higher that do not have the
+     * {@link android.Manifest.permission#INTERNET} permission is considered blocked.
+     * This results in API behaviors change for apps without
+     * {@link android.Manifest.permission#INTERNET} permission.
+     * {@link android.net.NetworkInfo} returned from {@link android.net.ConnectivityManager} APIs
+     * always has {@link android.net.NetworkInfo.DetailedState#BLOCKED}.
+     * {@link android.net.ConnectivityManager#getActiveNetwork()} always returns null.
+     * {@link android.net.ConnectivityManager.NetworkCallback#onBlockedStatusChanged()} is always
+     * called with blocked=true.
+     * <p>
+     * For backwards compatibility, apps running on older releases, or targeting older SDK levels,
+     * network access from apps without {@link android.Manifest.permission#INTERNET} permission is
+     * considered not blocked even though apps cannot access any networks.
+     *
+     * @hide
+     */
+    @ChangeId
+    @EnabledAfter(targetSdkVersion = Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    public static final long NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION = 333340911L;
+
+    /**
+     * Enable caching for TrafficStats#get* APIs.
+     *
+     * Apps targeting Android V or later or running on Android V or later may take up to several
+     * seconds to see the updated results.
+     * Apps targeting lower android SDKs do not see cached result for backward compatibility,
+     * results of TrafficStats#get* APIs are reflecting network statistics immediately.
+     *
+     * @hide
+     */
+    @ChangeId
+    @EnabledAfter(targetSdkVersion = Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    public static final long ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE = 74210811L;
+
     private ConnectivityCompatChanges() {
     }
 }
diff --git a/nearby/framework/Android.bp b/nearby/framework/Android.bp
index 4be102c..41a28a0 100644
--- a/nearby/framework/Android.bp
+++ b/nearby/framework/Android.bp
@@ -58,4 +58,7 @@
     visibility: [
         "//packages/modules/Connectivity/nearby/tests:__subpackages__",
     ],
+    lint: {
+        baseline_filename: "lint-baseline.xml",
+    },
 }
diff --git a/nearby/framework/lint-baseline.xml b/nearby/framework/lint-baseline.xml
new file mode 100644
index 0000000..e1081ee
--- /dev/null
+++ b/nearby/framework/lint-baseline.xml
@@ -0,0 +1,180 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<issues format="6" by="lint 8.4.0-alpha08" type="baseline" client="" dependencies="true" name="" variant="all" version="8.4.0-alpha08">
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="87"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="95"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="103"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="529"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="573"
+            column="17"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="    @FlaggedApi(&quot;com.android.nearby.flags.powered_off_finding&quot;)"
+        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/nearby/framework/java/android/nearby/NearbyManager.java"
+            line="605"
+            column="17"/>
+    </issue>
+
+</issues>
diff --git a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
index 832ac03..1e36676 100644
--- a/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
+++ b/nearby/tests/cts/fastpair/src/android/nearby/cts/NearbyManagerTest.java
@@ -28,9 +28,7 @@
 import static org.junit.Assume.assumeTrue;
 
 import android.app.UiAutomation;
-import android.bluetooth.BluetoothAdapter;
-import android.bluetooth.BluetoothManager;
-import android.bluetooth.cts.BTAdapterUtils;
+import android.bluetooth.test_utils.EnableBluetoothRule;
 import android.content.Context;
 import android.location.LocationManager;
 import android.nearby.BroadcastCallback;
@@ -58,6 +56,7 @@
 import com.android.modules.utils.build.SdkLevel;
 
 import org.junit.Before;
+import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -76,6 +75,9 @@
 @RunWith(AndroidJUnit4.class)
 @RequiresApi(Build.VERSION_CODES.TIRAMISU)
 public class NearbyManagerTest {
+
+    @ClassRule public static final EnableBluetoothRule sEnableBluetooth = new EnableBluetoothRule();
+
     private static final byte[] SALT = new byte[]{1, 2};
     private static final byte[] SECRET_ID = new byte[]{1, 2, 3, 4};
     private static final byte[] META_DATA_ENCRYPTION_KEY = new byte[14];
@@ -128,8 +130,6 @@
 
         mContext = InstrumentationRegistry.getContext();
         mNearbyManager = mContext.getSystemService(NearbyManager.class);
-
-        enableBluetooth();
     }
 
     @Test
@@ -281,14 +281,6 @@
         assertThrows(SecurityException.class, () -> mNearbyManager.getPoweredOffFindingMode());
     }
 
-    private void enableBluetooth() {
-        BluetoothManager manager = mContext.getSystemService(BluetoothManager.class);
-        BluetoothAdapter bluetoothAdapter = manager.getAdapter();
-        if (!bluetoothAdapter.isEnabled()) {
-            assertThat(BTAdapterUtils.enableAdapter(bluetoothAdapter, mContext)).isTrue();
-        }
-    }
-
     private void enableLocation() {
         LocationManager locationManager = mContext.getSystemService(LocationManager.class);
         UserHandle user = Process.myUserHandle();
diff --git a/nearby/tests/unit/src/com/android/server/nearby/managers/BluetoothFinderManagerTest.java b/nearby/tests/unit/src/com/android/server/nearby/managers/BluetoothFinderManagerTest.java
index 671b5c5..32286e1 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/managers/BluetoothFinderManagerTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/managers/BluetoothFinderManagerTest.java
@@ -18,6 +18,7 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.junit.Assume.assumeTrue;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyBoolean;
 import static org.mockito.Mockito.anyInt;
@@ -33,6 +34,8 @@
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
 
+import com.android.modules.utils.build.SdkLevel;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.mockito.ArgumentCaptor;
@@ -68,6 +71,8 @@
 
     @Before
     public void setup() {
+        // Replace with minSdkVersion when Build.VERSION_CODES.VANILLA_ICE_CREAM can be used.
+        assumeTrue(SdkLevel.isAtLeastV());
         MockitoAnnotations.initMocks(this);
         mBluetoothFinderManager = new BluetoothFinderManagerSpy();
     }
diff --git a/netbpfload/Android.bp b/netbpfload/Android.bp
index b71890e..908bb13 100644
--- a/netbpfload/Android.bp
+++ b/netbpfload/Android.bp
@@ -18,6 +18,18 @@
     default_team: "trendy_team_fwk_core_networking",
 }
 
+install_symlink {
+    name: "mainline_tethering_platform_components",
+
+    symlink_target: "/apex/com.android.tethering/bin/ethtool",
+    // installed_location is relative to /system because that's the default partition for soong
+    // modules, unless we add something like `system_ext_specific: true` like in hwservicemanager.
+    installed_location: "bin/ethtool",
+
+    init_rc: ["netbpfload.rc"],
+    required: ["bpfloader"],
+}
+
 cc_binary {
     name: "netbpfload",
 
@@ -49,9 +61,7 @@
     // module "netbpfload" variant "android_x86_apex30": should support
     // min_sdk_version(30) for "com.android.tethering": newer SDK(34).
     min_sdk_version: "30",
-
-    init_rc: ["netbpfload.rc"],
-    required: ["bpfloader"],
+    installable: false,
 }
 
 // Versioned netbpfload init rc: init system will process it only on api T/33+ devices
@@ -60,8 +70,15 @@
 // For details of versioned rc files see:
 // https://android.googlesource.com/platform/system/core/+/HEAD/init/README.md#versioned-rc-files-within-apexs
 prebuilt_etc {
-    name: "netbpfload.mainline.rc",
-    src: "netbpfload.mainline.rc",
+    name: "netbpfload.33rc",
+    src: "netbpfload.33rc",
     filename: "netbpfload.33rc",
     installable: false,
 }
+
+prebuilt_etc {
+    name: "netbpfload.35rc",
+    src: "netbpfload.35rc",
+    filename: "netbpfload.35rc",
+    installable: false,
+}
diff --git a/netbpfload/NetBpfLoad.cpp b/netbpfload/NetBpfLoad.cpp
index ed7d048..0d4a5c4 100644
--- a/netbpfload/NetBpfLoad.cpp
+++ b/netbpfload/NetBpfLoad.cpp
@@ -51,23 +51,24 @@
 #include "bpf/BpfUtils.h"
 #include "loader.h"
 
-using android::base::EndsWith;
-using android::bpf::domain;
-using std::string;
+namespace android {
+namespace bpf {
 
-bool exists(const char* const path) {
+using base::StartsWith;
+using base::EndsWith;
+using std::string;
+using std::vector;
+
+static bool exists(const char* const path) {
     int v = access(path, F_OK);
-    if (!v) {
-        ALOGI("%s exists.", path);
-        return true;
-    }
+    if (!v) return true;
     if (errno == ENOENT) return false;
     ALOGE("FATAL: access(%s, F_OK) -> %d [%d:%s]", path, v, errno, strerror(errno));
     abort();  // can only hit this if permissions (likely selinux) are screwed up
 }
 
 
-const android::bpf::Location locations[] = {
+const Location locations[] = {
         // S+ Tethering mainline module (network_stack): tether offload
         {
                 .dir = "/apex/com.android.tethering/etc/bpf/",
@@ -97,7 +98,7 @@
         },
 };
 
-int loadAllElfObjects(const android::bpf::Location& location) {
+static int loadAllElfObjects(const unsigned int bpfloader_ver, const Location& location) {
     int retVal = 0;
     DIR* dir;
     struct dirent* ent;
@@ -111,12 +112,12 @@
             progPath += s;
 
             bool critical;
-            int ret = android::bpf::loadProg(progPath.c_str(), &critical, location);
+            int ret = loadProg(progPath.c_str(), &critical, bpfloader_ver, location);
             if (ret) {
                 if (critical) retVal = ret;
                 ALOGE("Failed to load object: %s, ret: %s", progPath.c_str(), std::strerror(-ret));
             } else {
-                ALOGI("Loaded object: %s", progPath.c_str());
+                ALOGD("Loaded object: %s", progPath.c_str());
             }
         }
         closedir(dir);
@@ -124,7 +125,7 @@
     return retVal;
 }
 
-int createSysFsBpfSubDir(const char* const prefix) {
+static int createSysFsBpfSubDir(const char* const prefix) {
     if (*prefix) {
         mode_t prevUmask = umask(0);
 
@@ -147,8 +148,8 @@
 // Technically 'value' doesn't need to be newline terminated, but it's best
 // to include a newline to match 'echo "value" > /proc/sys/...foo' behaviour,
 // which is usually how kernel devs test the actual sysctl interfaces.
-int writeProcSysFile(const char *filename, const char *value) {
-    android::base::unique_fd fd(open(filename, O_WRONLY | O_CLOEXEC));
+static int writeProcSysFile(const char *filename, const char *value) {
+    base::unique_fd fd(open(filename, O_WRONLY | O_CLOEXEC));
     if (fd < 0) {
         const int err = errno;
         ALOGE("open('%s', O_WRONLY | O_CLOEXEC) -> %s", filename, strerror(err));
@@ -171,10 +172,8 @@
 
 #define APEX_MOUNT_POINT "/apex/com.android.tethering"
 const char * const platformBpfLoader = "/system/bin/bpfloader";
-const char * const platformNetBpfLoad = "/system/bin/netbpfload";
-const char * const apexNetBpfLoad = APEX_MOUNT_POINT "/bin/netbpfload";
 
-int logTetheringApexVersion(void) {
+static int logTetheringApexVersion(void) {
     char * found_blockdev = NULL;
     FILE * f = NULL;
     char buf[4096];
@@ -200,7 +199,7 @@
     f = NULL;
 
     if (!found_blockdev) return 2;
-    ALOGD("Found Tethering Apex mounted from blockdev %s", found_blockdev);
+    ALOGV("Found Tethering Apex mounted from blockdev %s", found_blockdev);
 
     f = fopen("/proc/mounts", "re");
     if (!f) { free(found_blockdev); return 3; }
@@ -226,46 +225,98 @@
     return 0;
 }
 
-int main(int argc, char** argv, char * const envp[]) {
-    (void)argc;
-    android::base::InitLogging(argv, &android::base::KernelLogger);
+static bool hasGSM() {
+    static string ph = base::GetProperty("gsm.current.phone-type", "");
+    static bool gsm = (ph != "");
+    static bool logged = false;
+    if (!logged) {
+        logged = true;
+        ALOGI("hasGSM(gsm.current.phone-type='%s'): %s", ph.c_str(), gsm ? "true" : "false");
+    }
+    return gsm;
+}
 
-    ALOGI("NetBpfLoad '%s' starting...", argv[0]);
+static bool isTV() {
+    if (hasGSM()) return false;  // TVs don't do GSM
 
-    // true iff we are running from the module
-    const bool is_mainline = !strcmp(argv[0], apexNetBpfLoad);
+    static string key = base::GetProperty("ro.oem.key1", "");
+    static bool tv = StartsWith(key, "ATV00");
+    static bool logged = false;
+    if (!logged) {
+        logged = true;
+        ALOGI("isTV(ro.oem.key1='%s'): %s.", key.c_str(), tv ? "true" : "false");
+    }
+    return tv;
+}
 
-    // true iff we are running from the platform
-    const bool is_platform = !strcmp(argv[0], platformNetBpfLoad);
+static bool isWear() {
+    static string wearSdkStr = base::GetProperty("ro.cw_build.wear_sdk.version", "");
+    static int wearSdkInt = base::GetIntProperty("ro.cw_build.wear_sdk.version", 0);
+    static string buildChars = base::GetProperty("ro.build.characteristics", "");
+    static vector<string> v = base::Tokenize(buildChars, ",");
+    static bool watch = (std::find(v.begin(), v.end(), "watch") != v.end());
+    static bool wear = (wearSdkInt > 0) || watch;
+    static bool logged = false;
+    if (!logged) {
+        logged = true;
+        ALOGI("isWear(ro.cw_build.wear_sdk.version=%d[%s] ro.build.characteristics='%s'): %s",
+              wearSdkInt, wearSdkStr.c_str(), buildChars.c_str(), wear ? "true" : "false");
+    }
+    return wear;
+}
 
-    const int device_api_level = android_get_device_api_level();
-    const bool isAtLeastT = (device_api_level >= __ANDROID_API_T__);
-    const bool isAtLeastU = (device_api_level >= __ANDROID_API_U__);
-    const bool isAtLeastV = (device_api_level >= __ANDROID_API_V__);
+static int doLoad(char** argv, char * const envp[]) {
+    const bool runningAsRoot = !getuid();  // true iff U QPR3 or V+
+
+    // Any released device will have codename REL instead of a 'real' codename.
+    // For safety: default to 'REL' so we default to unreleased=false on failure.
+    const bool unreleased = (base::GetProperty("ro.build.version.codename", "REL") != "REL");
+
+    // goog/main device_api_level is bumped *way* before aosp/main api level
+    // (the latter only gets bumped during the push of goog/main to aosp/main)
+    //
+    // Since we develop in AOSP, we want it to behave as if it was bumped too.
+    //
+    // Note that AOSP doesn't really have a good api level (for example during
+    // early V dev cycle, it would have *all* of T, some but not all of U, and some V).
+    // One could argue that for our purposes AOSP api level should be infinite or 10000.
+    //
+    // This could also cause api to be increased in goog/main or other branches,
+    // but I can't imagine a case where this would be a problem: the problem
+    // is rather a too low api level, rather than some ill defined high value.
+    // For example as I write this aosp is 34/U, and goog is 35/V,
+    // we want to treat both goog & aosp as 35/V, but it's harmless if we
+    // treat goog as 36 because that value isn't yet defined to mean anything,
+    // and we thus never compare against it.
+    //
+    // Also note that 'android_get_device_api_level()' is what the
+    //   //system/core/init/apex_init_util.cpp
+    // apex init .XXrc parsing code uses for XX filtering.
+    //
+    // That code has a hack to bump <35 to 35 (to force aosp/main to parse .35rc),
+    // but could (should?) perhaps be adjusted to match this.
+    const int effective_api_level = android_get_device_api_level() + (int)unreleased;
+    const bool isAtLeastT = (effective_api_level >= __ANDROID_API_T__);
+    const bool isAtLeastU = (effective_api_level >= __ANDROID_API_U__);
+    const bool isAtLeastV = (effective_api_level >= __ANDROID_API_V__);
 
     // last in U QPR2 beta1
     const bool has_platform_bpfloader_rc = exists("/system/etc/init/bpfloader.rc");
     // first in U QPR2 beta~2
     const bool has_platform_netbpfload_rc = exists("/system/etc/init/netbpfload.rc");
 
-    ALOGI("NetBpfLoad api:%d/%d kver:%07x platform:%d mainline:%d rc:%d%d",
-          android_get_application_target_sdk_version(), device_api_level,
-          android::bpf::kernelVersion(), is_platform, is_mainline,
+    // Version of Network BpfLoader depends on the Android OS version
+    unsigned int bpfloader_ver = 42u;    // [42] BPFLOADER_MAINLINE_VERSION
+    if (isAtLeastT) ++bpfloader_ver;     // [43] BPFLOADER_MAINLINE_T_VERSION
+    if (isAtLeastU) ++bpfloader_ver;     // [44] BPFLOADER_MAINLINE_U_VERSION
+    if (runningAsRoot) ++bpfloader_ver;  // [45] BPFLOADER_MAINLINE_U_QPR3_VERSION
+    if (isAtLeastV) ++bpfloader_ver;     // [46] BPFLOADER_MAINLINE_V_VERSION
+
+    ALOGI("NetBpfLoad v0.%u (%s) api:%d/%d kver:%07x (%s) uid:%d rc:%d%d",
+          bpfloader_ver, argv[0], android_get_device_api_level(), effective_api_level,
+          kernelVersion(), describeArch(), getuid(),
           has_platform_bpfloader_rc, has_platform_netbpfload_rc);
 
-    if (!is_platform && !is_mainline) {
-        ALOGE("Unable to determine if we're platform or mainline netbpfload.");
-        return 1;
-    }
-
-    if (is_platform) {
-        ALOGI("Executing apex netbpfload...");
-        const char * args[] = { apexNetBpfLoad, NULL, };
-        execve(args[0], (char**)args, envp);
-        ALOGE("exec '%s' fail: %d[%s]", apexNetBpfLoad, errno, strerror(errno));
-        return 1;
-    }
-
     if (!has_platform_bpfloader_rc && !has_platform_netbpfload_rc) {
         ALOGE("Unable to find platform's bpfloader & netbpfload init scripts.");
         return 1;
@@ -278,37 +329,72 @@
 
     logTetheringApexVersion();
 
-    if (is_mainline && has_platform_bpfloader_rc && !has_platform_netbpfload_rc) {
-        // Tethering apex shipped initrc file causes us to reach here
-        // but we're not ready to correctly handle anything before U QPR2
-        // in which the 'bpfloader' vs 'netbpfload' split happened
-        const char * args[] = { platformBpfLoader, NULL, };
-        execve(args[0], (char**)args, envp);
-        ALOGE("exec '%s' fail: %d[%s]", platformBpfLoader, errno, strerror(errno));
+    if (!isAtLeastT) {
+        ALOGE("Impossible - not reachable on Android <T.");
         return 1;
     }
 
-    if (isAtLeastT && !android::bpf::isAtLeastKernelVersion(4, 9, 0)) {
+    // both S and T require kernel 4.9 (and eBpf support)
+    if (isAtLeastT && !isAtLeastKernelVersion(4, 9, 0)) {
         ALOGE("Android T requires kernel 4.9.");
         return 1;
     }
 
-    if (isAtLeastU && !android::bpf::isAtLeastKernelVersion(4, 14, 0)) {
+    // U bumps the kernel requirement up to 4.14
+    if (isAtLeastU && !isAtLeastKernelVersion(4, 14, 0)) {
         ALOGE("Android U requires kernel 4.14.");
         return 1;
     }
 
-    if (isAtLeastV && !android::bpf::isAtLeastKernelVersion(4, 19, 0)) {
+    // V bumps the kernel requirement up to 4.19
+    // see also: //system/netd/tests/kernel_test.cpp TestKernel419
+    if (isAtLeastV && !isAtLeastKernelVersion(4, 19, 0)) {
         ALOGE("Android V requires kernel 4.19.");
         return 1;
     }
 
-    if (isAtLeastV && android::bpf::isX86() && !android::bpf::isKernel64Bit()) {
-        ALOGE("Android V requires X86 kernel to be 64-bit.");
-        return 1;
+    // Technically already required by U, but only enforce on V+
+    // see also: //system/netd/tests/kernel_test.cpp TestKernel64Bit
+    if (isAtLeastV && isKernel32Bit() && isAtLeastKernelVersion(5, 16, 0)) {
+        ALOGE("Android V+ platform with 32 bit kernel version >= 5.16.0 is unsupported");
+        if (!isTV()) return 1;
     }
 
-    if (android::bpf::isUserspace32bit() && android::bpf::isAtLeastKernelVersion(6, 2, 0)) {
+    // Various known ABI layout issues, particularly wrt. bpf and ipsec/xfrm.
+    if (isAtLeastV && isKernel32Bit() && isX86()) {
+        ALOGE("Android V requires X86 kernel to be 64-bit.");
+        if (!isTV()) return 1;
+    }
+
+    if (isAtLeastV) {
+        bool bad = false;
+
+        if (!isLtsKernel()) {
+            ALOGW("Android V only supports LTS kernels.");
+            bad = true;
+        }
+
+#define REQUIRE(maj, min, sub) \
+        if (isKernelVersion(maj, min) && !isAtLeastKernelVersion(maj, min, sub)) { \
+            ALOGW("Android V requires %d.%d kernel to be %d.%d.%d+.", maj, min, maj, min, sub); \
+            bad = true; \
+        }
+
+        REQUIRE(4, 19, 236)
+        REQUIRE(5, 4, 186)
+        REQUIRE(5, 10, 199)
+        REQUIRE(5, 15, 136)
+        REQUIRE(6, 1, 57)
+        REQUIRE(6, 6, 0)
+
+#undef REQUIRE
+
+        if (bad) {
+            ALOGE("Unsupported kernel version (%07x).", kernelVersion());
+        }
+    }
+
+    if (isUserspace32bit() && isAtLeastKernelVersion(6, 2, 0)) {
         /* Android 14/U should only launch on 64-bit kernels
          *   T launches on 5.10/5.15
          *   U launches on 5.15/6.1
@@ -324,28 +410,42 @@
          * Some of these have userspace or kernel workarounds/hacks.
          * Some of them don't...
          * We're going to be removing the hacks.
+         * (for example "ANDROID: xfrm: remove in_compat_syscall() checks").
+         * Note: this check/enforcement only applies to *system* userspace code,
+         * it does not affect unprivileged apps, the 32-on-64 compatibility
+         * problems are AFAIK limited to various CAP_NET_ADMIN protected interfaces.
          *
          * Additionally the 32-bit kernel jit support is poor,
          * and 32-bit userspace on 64-bit kernel bpf ringbuffer compatibility is broken.
          */
         ALOGE("64-bit userspace required on 6.2+ kernels.");
-        return 1;
+        // Stuff won't work reliably, but exempt TVs & Arm Wear devices
+        if (!isTV() && !(isWear() && isArm())) return 1;
     }
 
     // Ensure we can determine the Android build type.
-    if (!android::bpf::isEng() && !android::bpf::isUser() && !android::bpf::isUserdebug()) {
+    if (!isEng() && !isUser() && !isUserdebug()) {
         ALOGE("Failed to determine the build type: got %s, want 'eng', 'user', or 'userdebug'",
-              android::bpf::getBuildType().c_str());
+              getBuildType().c_str());
         return 1;
     }
 
-    if (isAtLeastU) {
+    if (runningAsRoot) {
+        // Note: writing this proc file requires being root (always the case on V+)
+
         // Linux 5.16-rc1 changed the default to 2 (disabled but changeable),
         // but we need 0 (enabled)
         // (this writeFile is known to fail on at least 4.19, but always defaults to 0 on
         // pre-5.13, on 5.13+ it depends on CONFIG_BPF_UNPRIV_DEFAULT_OFF)
         if (writeProcSysFile("/proc/sys/kernel/unprivileged_bpf_disabled", "0\n") &&
-            android::bpf::isAtLeastKernelVersion(5, 13, 0)) return 1;
+            isAtLeastKernelVersion(5, 13, 0)) return 1;
+    }
+
+    if (isAtLeastU) {
+        // Note: writing these proc files requires CAP_NET_ADMIN
+        // and sepolicy which is only present on U+,
+        // on Android T and earlier versions they're written from the 'load_bpf_programs'
+        // trigger (ie. by init itself) instead.
 
         // Enable the eBPF JIT -- but do note that on 64-bit kernels it is likely
         // already force enabled by the kernel config option BPF_JIT_ALWAYS_ON.
@@ -378,7 +478,7 @@
 
     // Load all ELF objects, create programs and maps, and pin them
     for (const auto& location : locations) {
-        if (loadAllElfObjects(location) != 0) {
+        if (loadAllElfObjects(bpfloader_ver, location) != 0) {
             ALOGE("=== CRITICAL FAILURE LOADING BPF PROGRAMS FROM %s ===", location.dir);
             ALOGE("If this triggers reliably, you're probably missing kernel options or patches.");
             ALOGE("If this triggers randomly, you might be hitting some memory allocation "
@@ -391,17 +491,49 @@
 
     int key = 1;
     int value = 123;
-    android::base::unique_fd map(
-            android::bpf::createMap(BPF_MAP_TYPE_ARRAY, sizeof(key), sizeof(value), 2, 0));
-    if (android::bpf::writeToMapEntry(map, &key, &value, BPF_ANY)) {
+    base::unique_fd map(
+            createMap(BPF_MAP_TYPE_ARRAY, sizeof(key), sizeof(value), 2, 0));
+    if (writeToMapEntry(map, &key, &value, BPF_ANY)) {
         ALOGE("Critical kernel bug - failure to write into index 1 of 2 element bpf map array.");
         return 1;
     }
 
+    // leave a flag that we're done
+    if (createSysFsBpfSubDir("netd_shared/mainline_done")) return 1;
+
+    // platform bpfloader will only succeed when run as root
+    if (!runningAsRoot) {
+        // unreachable on U QPR3+ which always runs netbpfload as root
+
+        ALOGI("mainline done, no need to transfer control to platform bpf loader.");
+        return 0;
+    }
+
+    // unreachable before U QPR3
     ALOGI("done, transferring control to platform bpfloader.");
 
+    // platform BpfLoader *needs* to run as root
     const char * args[] = { platformBpfLoader, NULL, };
     execve(args[0], (char**)args, envp);
     ALOGE("FATAL: execve('%s'): %d[%s]", platformBpfLoader, errno, strerror(errno));
     return 1;
 }
+
+}  // namespace bpf
+}  // namespace android
+
+int main(int argc, char** argv, char * const envp[]) {
+    android::base::InitLogging(argv, &android::base::KernelLogger);
+
+    if (argc == 2 && !strcmp(argv[1], "done")) {
+        // we're being re-exec'ed from platform bpfloader to 'finalize' things
+        if (!android::base::SetProperty("bpf.progs_loaded", "1")) {
+            ALOGE("Failed to set bpf.progs_loaded property to 1.");
+            return 125;
+        }
+        ALOGI("success.");
+        return 0;
+    }
+
+    return android::bpf::doLoad(argv, envp);
+}
diff --git a/netbpfload/loader.cpp b/netbpfload/loader.cpp
index c534b2c..5141095 100644
--- a/netbpfload/loader.cpp
+++ b/netbpfload/loader.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "NetBpfLoader"
+#define LOG_TAG "NetBpfLoad"
 
 #include <errno.h>
 #include <fcntl.h>
@@ -31,24 +31,11 @@
 #include <sys/wait.h>
 #include <unistd.h>
 
-// This is BpfLoader v0.41
-// WARNING: If you ever hit cherrypick conflicts here you're doing it wrong:
-// You are NOT allowed to cherrypick bpfloader related patches out of order.
-// (indeed: cherrypicking is probably a bad idea and you should merge instead)
-// Mainline supports ONLY the published versions of the bpfloader for each Android release.
-#define BPFLOADER_VERSION_MAJOR 0u
-#define BPFLOADER_VERSION_MINOR 41u
-#define BPFLOADER_VERSION ((BPFLOADER_VERSION_MAJOR << 16) | BPFLOADER_VERSION_MINOR)
-
 #include "BpfSyscallWrappers.h"
 #include "bpf/BpfUtils.h"
 #include "bpf/bpf_map_def.h"
 #include "loader.h"
 
-#if BPFLOADER_VERSION < COMPILE_FOR_BPFLOADER_VERSION
-#error "BPFLOADER_VERSION is less than COMPILE_FOR_BPFLOADER_VERSION"
-#endif
-
 #include <cstdlib>
 #include <fstream>
 #include <iostream>
@@ -178,32 +165,34 @@
  * since they are less stable abi/api and may conflict with platform uses of bpf.
  */
 sectionType sectionNameTypes[] = {
-        {"bind4/",         BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_BIND},
-        {"bind6/",         BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_BIND},
-        {"cgroupskb/",     BPF_PROG_TYPE_CGROUP_SKB,       BPF_ATTACH_TYPE_UNSPEC},
-        {"cgroupsock/",    BPF_PROG_TYPE_CGROUP_SOCK,      BPF_ATTACH_TYPE_UNSPEC},
-        {"connect4/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_CONNECT},
-        {"connect6/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_CONNECT},
-        {"egress/",        BPF_PROG_TYPE_CGROUP_SKB,       BPF_CGROUP_INET_EGRESS},
-        {"getsockopt/",    BPF_PROG_TYPE_CGROUP_SOCKOPT,   BPF_CGROUP_GETSOCKOPT},
-        {"ingress/",       BPF_PROG_TYPE_CGROUP_SKB,       BPF_CGROUP_INET_INGRESS},
-        {"lwt_in/",        BPF_PROG_TYPE_LWT_IN,           BPF_ATTACH_TYPE_UNSPEC},
-        {"lwt_out/",       BPF_PROG_TYPE_LWT_OUT,          BPF_ATTACH_TYPE_UNSPEC},
-        {"lwt_seg6local/", BPF_PROG_TYPE_LWT_SEG6LOCAL,    BPF_ATTACH_TYPE_UNSPEC},
-        {"lwt_xmit/",      BPF_PROG_TYPE_LWT_XMIT,         BPF_ATTACH_TYPE_UNSPEC},
-        {"postbind4/",     BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET4_POST_BIND},
-        {"postbind6/",     BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET6_POST_BIND},
-        {"recvmsg4/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_RECVMSG},
-        {"recvmsg6/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_RECVMSG},
-        {"schedact/",      BPF_PROG_TYPE_SCHED_ACT,        BPF_ATTACH_TYPE_UNSPEC},
-        {"schedcls/",      BPF_PROG_TYPE_SCHED_CLS,        BPF_ATTACH_TYPE_UNSPEC},
-        {"sendmsg4/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_SENDMSG},
-        {"sendmsg6/",      BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_SENDMSG},
-        {"setsockopt/",    BPF_PROG_TYPE_CGROUP_SOCKOPT,   BPF_CGROUP_SETSOCKOPT},
-        {"skfilter/",      BPF_PROG_TYPE_SOCKET_FILTER,    BPF_ATTACH_TYPE_UNSPEC},
-        {"sockops/",       BPF_PROG_TYPE_SOCK_OPS,         BPF_CGROUP_SOCK_OPS},
-        {"sysctl",         BPF_PROG_TYPE_CGROUP_SYSCTL,    BPF_CGROUP_SYSCTL},
-        {"xdp/",           BPF_PROG_TYPE_XDP,              BPF_ATTACH_TYPE_UNSPEC},
+        {"bind4/",             BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_BIND},
+        {"bind6/",             BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_BIND},
+        {"cgroupskb/",         BPF_PROG_TYPE_CGROUP_SKB,       BPF_ATTACH_TYPE_UNSPEC},
+        {"cgroupsock/",        BPF_PROG_TYPE_CGROUP_SOCK,      BPF_ATTACH_TYPE_UNSPEC},
+        {"cgroupsockcreate/",  BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET_SOCK_CREATE},
+        {"cgroupsockrelease/", BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET_SOCK_RELEASE},
+        {"connect4/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET4_CONNECT},
+        {"connect6/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_INET6_CONNECT},
+        {"egress/",            BPF_PROG_TYPE_CGROUP_SKB,       BPF_CGROUP_INET_EGRESS},
+        {"getsockopt/",        BPF_PROG_TYPE_CGROUP_SOCKOPT,   BPF_CGROUP_GETSOCKOPT},
+        {"ingress/",           BPF_PROG_TYPE_CGROUP_SKB,       BPF_CGROUP_INET_INGRESS},
+        {"lwt_in/",            BPF_PROG_TYPE_LWT_IN,           BPF_ATTACH_TYPE_UNSPEC},
+        {"lwt_out/",           BPF_PROG_TYPE_LWT_OUT,          BPF_ATTACH_TYPE_UNSPEC},
+        {"lwt_seg6local/",     BPF_PROG_TYPE_LWT_SEG6LOCAL,    BPF_ATTACH_TYPE_UNSPEC},
+        {"lwt_xmit/",          BPF_PROG_TYPE_LWT_XMIT,         BPF_ATTACH_TYPE_UNSPEC},
+        {"postbind4/",         BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET4_POST_BIND},
+        {"postbind6/",         BPF_PROG_TYPE_CGROUP_SOCK,      BPF_CGROUP_INET6_POST_BIND},
+        {"recvmsg4/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_RECVMSG},
+        {"recvmsg6/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_RECVMSG},
+        {"schedact/",          BPF_PROG_TYPE_SCHED_ACT,        BPF_ATTACH_TYPE_UNSPEC},
+        {"schedcls/",          BPF_PROG_TYPE_SCHED_CLS,        BPF_ATTACH_TYPE_UNSPEC},
+        {"sendmsg4/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP4_SENDMSG},
+        {"sendmsg6/",          BPF_PROG_TYPE_CGROUP_SOCK_ADDR, BPF_CGROUP_UDP6_SENDMSG},
+        {"setsockopt/",        BPF_PROG_TYPE_CGROUP_SOCKOPT,   BPF_CGROUP_SETSOCKOPT},
+        {"skfilter/",          BPF_PROG_TYPE_SOCKET_FILTER,    BPF_ATTACH_TYPE_UNSPEC},
+        {"sockops/",           BPF_PROG_TYPE_SOCK_OPS,         BPF_CGROUP_SOCK_OPS},
+        {"sysctl",             BPF_PROG_TYPE_CGROUP_SYSCTL,    BPF_CGROUP_SYSCTL},
+        {"xdp/",               BPF_PROG_TYPE_XDP,              BPF_ATTACH_TYPE_UNSPEC},
 };
 
 typedef struct {
@@ -413,9 +402,6 @@
                         size_t sizeOfBpfProgDef) {
     vector<char> pdData;
     int ret = readSectionByName("progs", elfFile, pdData);
-    // Older file formats do not require a 'progs' section at all.
-    // (We should probably figure out whether this is behaviour which is safe to remove now.)
-    if (ret == -2) return 0;
     if (ret) return ret;
 
     if (pdData.size() % sizeOfBpfProgDef) {
@@ -528,7 +514,7 @@
 
         ret = readSectionByIdx(elfFile, i, cs_temp.data);
         if (ret) return ret;
-        ALOGD("Loaded code section %d (%s)", i, name.c_str());
+        ALOGV("Loaded code section %d (%s)", i, name.c_str());
 
         vector<string> csSymNames;
         ret = getSectionSymNames(elfFile, oldName, csSymNames, STT_FUNC);
@@ -548,13 +534,13 @@
             if (name == (".rel" + oldName)) {
                 ret = readSectionByIdx(elfFile, i + 1, cs_temp.rel_data);
                 if (ret) return ret;
-                ALOGD("Loaded relo section %d (%s)", i, name.c_str());
+                ALOGV("Loaded relo section %d (%s)", i, name.c_str());
             }
         }
 
         if (cs_temp.data.size() > 0) {
             cs.push_back(std::move(cs_temp));
-            ALOGD("Adding section %d to cs list", i);
+            ALOGV("Adding section %d to cs list", i);
         }
     }
     return 0;
@@ -574,6 +560,14 @@
 
 static bool mapMatchesExpectations(const unique_fd& fd, const string& mapName,
                                    const struct bpf_map_def& mapDef, const enum bpf_map_type type) {
+    // bpfGetFd... family of functions require at minimum a 4.14 kernel,
+    // so on 4.9-T kernels just pretend the map matches our expectations.
+    // Additionally we'll get almost equivalent test coverage on newer devices/kernels.
+    // This is because the primary failure mode we're trying to detect here
+    // is either a source code misconfiguration (which is likely kernel independent)
+    // or a newly introduced kernel feature/bug (which is unlikely to get backported to 4.9).
+    if (!isAtLeastKernelVersion(4, 14, 0)) return true;
+
     // Assuming fd is a valid Bpf Map file descriptor then
     // all the following should always succeed on a 4.14+ kernel.
     // If they somehow do fail, they'll return -1 (and set errno),
@@ -621,7 +615,8 @@
 }
 
 static int createMaps(const char* elfPath, ifstream& elfFile, vector<unique_fd>& mapFds,
-                      const char* prefix, const size_t sizeOfBpfMapDef) {
+                      const char* prefix, const size_t sizeOfBpfMapDef,
+                      const unsigned int bpfloader_ver) {
     int ret;
     vector<char> mdData;
     vector<struct bpf_map_def> md;
@@ -663,14 +658,14 @@
     for (int i = 0; i < (int)mapNames.size(); i++) {
         if (md[i].zero != 0) abort();
 
-        if (BPFLOADER_VERSION < md[i].bpfloader_min_ver) {
+        if (bpfloader_ver < md[i].bpfloader_min_ver) {
             ALOGI("skipping map %s which requires bpfloader min ver 0x%05x", mapNames[i].c_str(),
                   md[i].bpfloader_min_ver);
             mapFds.push_back(unique_fd());
             continue;
         }
 
-        if (BPFLOADER_VERSION >= md[i].bpfloader_max_ver) {
+        if (bpfloader_ver >= md[i].bpfloader_max_ver) {
             ALOGI("skipping map %s which requires bpfloader max ver 0x%05x", mapNames[i].c_str(),
                   md[i].bpfloader_max_ver);
             mapFds.push_back(unique_fd());
@@ -711,6 +706,16 @@
         }
 
         enum bpf_map_type type = md[i].type;
+        if (type == BPF_MAP_TYPE_DEVMAP && !isAtLeastKernelVersion(4, 14, 0)) {
+            // On Linux Kernels older than 4.14 this map type doesn't exist, but it can kind
+            // of be approximated: ARRAY has the same userspace api, though it is not usable
+            // by the same ebpf programs.  However, that's okay because the bpf_redirect_map()
+            // helper doesn't exist on 4.9-T anyway (so the bpf program would fail to load,
+            // and thus needs to be tagged as 4.14+ either way), so there's nothing useful you
+            // could do with a DEVMAP anyway (that isn't already provided by an ARRAY)...
+            // Hence using an ARRAY instead of a DEVMAP simply makes life easier for userspace.
+            type = BPF_MAP_TYPE_ARRAY;
+        }
         if (type == BPF_MAP_TYPE_DEVMAP_HASH && !isAtLeastKernelVersion(5, 4, 0)) {
             // On Linux Kernels older than 5.4 this map type doesn't exist, but it can kind
             // of be approximated: HASH has the same userspace visible api.
@@ -733,15 +738,15 @@
         domain selinux_context = getDomainFromSelinuxContext(md[i].selinux_context);
         if (specified(selinux_context)) {
             ALOGI("map %s selinux_context [%-32s] -> %d -> '%s' (%s)", mapNames[i].c_str(),
-                  md[i].selinux_context, selinux_context, lookupSelinuxContext(selinux_context),
-                  lookupPinSubdir(selinux_context));
+                  md[i].selinux_context, static_cast<int>(selinux_context),
+                  lookupSelinuxContext(selinux_context), lookupPinSubdir(selinux_context));
         }
 
         domain pin_subdir = getDomainFromPinSubdir(md[i].pin_subdir);
         if (unrecognized(pin_subdir)) return -ENOTDIR;
         if (specified(pin_subdir)) {
             ALOGI("map %s pin_subdir [%-32s] -> %d -> '%s'", mapNames[i].c_str(), md[i].pin_subdir,
-                  pin_subdir, lookupPinSubdir(pin_subdir));
+                  static_cast<int>(pin_subdir), lookupPinSubdir(pin_subdir));
         }
 
         // Format of pin location is /sys/fs/bpf/<pin_subdir|prefix>map_<objName>_<mapName>
@@ -766,7 +771,8 @@
               .max_entries = max_entries,
               .map_flags = md[i].map_flags,
             };
-            strlcpy(req.map_name, mapNames[i].c_str(), sizeof(req.map_name));
+            if (isAtLeastKernelVersion(4, 15, 0))
+                strlcpy(req.map_name, mapNames[i].c_str(), sizeof(req.map_name));
             fd.reset(bpf(BPF_MAP_CREATE, req));
             saved_errno = errno;
             ALOGD("bpf_create_map name %s, ret: %d", mapNames[i].c_str(), fd.get());
@@ -865,7 +871,7 @@
 
     // Occasionally might be useful for relocation debugging, but pretty spammy
     if (0) {
-        ALOGD("applying relo to instruction at byte offset: %llu, "
+        ALOGV("applying relo to instruction at byte offset: %llu, "
               "insn offset %d, insn %llx",
               (unsigned long long)offset, insnIndex, *(unsigned long long*)insn);
     }
@@ -910,7 +916,7 @@
 }
 
 static int loadCodeSections(const char* elfPath, vector<codeSection>& cs, const string& license,
-                            const char* prefix) {
+                            const char* prefix, const unsigned int bpfloader_ver) {
     unsigned kvers = kernelVersion();
 
     if (!kvers) {
@@ -946,8 +952,8 @@
 
         ALOGD("cs[%d].name:%s requires bpfloader version [0x%05x,0x%05x)", i, name.c_str(),
               bpfMinVer, bpfMaxVer);
-        if (BPFLOADER_VERSION < bpfMinVer) continue;
-        if (BPFLOADER_VERSION >= bpfMaxVer) continue;
+        if (bpfloader_ver < bpfMinVer) continue;
+        if (bpfloader_ver >= bpfMaxVer) continue;
 
         if ((cs[i].prog_def->ignore_on_eng && isEng()) ||
             (cs[i].prog_def->ignore_on_user && isUser()) ||
@@ -970,13 +976,14 @@
 
         if (specified(selinux_context)) {
             ALOGI("prog %s selinux_context [%-32s] -> %d -> '%s' (%s)", name.c_str(),
-                  cs[i].prog_def->selinux_context, selinux_context,
+                  cs[i].prog_def->selinux_context, static_cast<int>(selinux_context),
                   lookupSelinuxContext(selinux_context), lookupPinSubdir(selinux_context));
         }
 
         if (specified(pin_subdir)) {
             ALOGI("prog %s pin_subdir [%-32s] -> %d -> '%s'", name.c_str(),
-                  cs[i].prog_def->pin_subdir, pin_subdir, lookupPinSubdir(pin_subdir));
+                  cs[i].prog_def->pin_subdir, static_cast<int>(pin_subdir),
+                  lookupPinSubdir(pin_subdir));
         }
 
         // strip any potential $foo suffix
@@ -1008,7 +1015,8 @@
               .log_size = static_cast<__u32>(log_buf.size()),
               .expected_attach_type = cs[i].expected_attach_type,
             };
-            strlcpy(req.prog_name, cs[i].name.c_str(), sizeof(req.prog_name));
+            if (isAtLeastKernelVersion(4, 15, 0))
+                strlcpy(req.prog_name, cs[i].name.c_str(), sizeof(req.prog_name));
             fd.reset(bpf(BPF_PROG_LOAD, req));
 
             ALOGD("BPF_PROG_LOAD call for %s (%s) returned fd: %d (%s)", elfPath,
@@ -1082,7 +1090,8 @@
     return 0;
 }
 
-int loadProg(const char* elfPath, bool* isCritical, const Location& location) {
+int loadProg(const char* const elfPath, bool* const isCritical, const unsigned int bpfloader_ver,
+             const Location& location) {
     vector<char> license;
     vector<char> critical;
     vector<codeSection> cs;
@@ -1121,27 +1130,27 @@
             readSectionUint("size_of_bpf_prog_def", elfFile, DEFAULT_SIZEOF_BPF_PROG_DEF);
 
     // inclusive lower bound check
-    if (BPFLOADER_VERSION < bpfLoaderMinVer) {
+    if (bpfloader_ver < bpfLoaderMinVer) {
         ALOGI("BpfLoader version 0x%05x ignoring ELF object %s with min ver 0x%05x",
-              BPFLOADER_VERSION, elfPath, bpfLoaderMinVer);
+              bpfloader_ver, elfPath, bpfLoaderMinVer);
         return 0;
     }
 
     // exclusive upper bound check
-    if (BPFLOADER_VERSION >= bpfLoaderMaxVer) {
+    if (bpfloader_ver >= bpfLoaderMaxVer) {
         ALOGI("BpfLoader version 0x%05x ignoring ELF object %s with max ver 0x%05x",
-              BPFLOADER_VERSION, elfPath, bpfLoaderMaxVer);
+              bpfloader_ver, elfPath, bpfLoaderMaxVer);
         return 0;
     }
 
-    if (BPFLOADER_VERSION < bpfLoaderMinRequiredVer) {
+    if (bpfloader_ver < bpfLoaderMinRequiredVer) {
         ALOGI("BpfLoader version 0x%05x failing due to ELF object %s with required min ver 0x%05x",
-              BPFLOADER_VERSION, elfPath, bpfLoaderMinRequiredVer);
+              bpfloader_ver, elfPath, bpfLoaderMinRequiredVer);
         return -1;
     }
 
     ALOGI("BpfLoader version 0x%05x processing ELF object %s with ver [0x%05x,0x%05x)",
-          BPFLOADER_VERSION, elfPath, bpfLoaderMinVer, bpfLoaderMaxVer);
+          bpfloader_ver, elfPath, bpfLoaderMinVer, bpfLoaderMaxVer);
 
     if (sizeOfBpfMapDef < DEFAULT_SIZEOF_BPF_MAP_DEF) {
         ALOGE("sizeof(bpf_map_def) of %zu is too small (< %d)", sizeOfBpfMapDef,
@@ -1164,18 +1173,18 @@
     /* Just for future debugging */
     if (0) dumpAllCs(cs);
 
-    ret = createMaps(elfPath, elfFile, mapFds, location.prefix, sizeOfBpfMapDef);
+    ret = createMaps(elfPath, elfFile, mapFds, location.prefix, sizeOfBpfMapDef, bpfloader_ver);
     if (ret) {
         ALOGE("Failed to create maps: (ret=%d) in %s", ret, elfPath);
         return ret;
     }
 
     for (int i = 0; i < (int)mapFds.size(); i++)
-        ALOGD("map_fd found at %d is %d in %s", i, mapFds[i].get(), elfPath);
+        ALOGV("map_fd found at %d is %d in %s", i, mapFds[i].get(), elfPath);
 
     applyMapRelo(elfFile, mapFds, cs);
 
-    ret = loadCodeSections(elfPath, cs, string(license.data()), location.prefix);
+    ret = loadCodeSections(elfPath, cs, string(license.data()), location.prefix, bpfloader_ver);
     if (ret) ALOGE("Failed to load programs, loadCodeSections ret=%d", ret);
 
     return ret;
diff --git a/netbpfload/loader.h b/netbpfload/loader.h
index b884637..4da6830 100644
--- a/netbpfload/loader.h
+++ b/netbpfload/loader.h
@@ -70,7 +70,8 @@
 };
 
 // BPF loader implementation. Loads an eBPF ELF object
-int loadProg(const char* elfPath, bool* isCritical, const Location &location = {});
+int loadProg(const char* elfPath, bool* isCritical, const unsigned int bpfloader_ver,
+             const Location &location = {});
 
 // Exposed for testing
 unsigned int readSectionUint(const char* name, std::ifstream& elfFile, unsigned int defVal);
diff --git a/netbpfload/netbpfload.33rc b/netbpfload/netbpfload.33rc
new file mode 100644
index 0000000..493731f
--- /dev/null
+++ b/netbpfload/netbpfload.33rc
@@ -0,0 +1,21 @@
+# This file takes effect only on T and U (on V netbpfload.35rc takes priority).
+#
+# The service is started from netd's libnetd_updatable shared library
+# on initial (boot time) startup of netd.
+#
+# However we never start this service on U QPR3.
+#
+# This is due to lack of a need: U QPR2 split the previously single
+# platform bpfloader into platform netbpfload -> platform bpfloader.
+# U QPR3 made the platform netbpfload unconditionally exec apex netbpfload,
+# so by the time U QPR3's netd runs, apex netbpfload is already done.
+
+service mdnsd_netbpfload /apex/com.android.tethering/bin/netbpfload
+    capabilities CHOWN SYS_ADMIN NET_ADMIN
+    group system root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw
+    user system
+    file /dev/kmsg w
+    rlimit memlock 1073741824 1073741824
+    oneshot
+    reboot_on_failure reboot,netbpfload-failed
+    override
diff --git a/netbpfload/netbpfload.mainline.rc b/netbpfload/netbpfload.35rc
similarity index 93%
rename from netbpfload/netbpfload.mainline.rc
rename to netbpfload/netbpfload.35rc
index 0ac5de8..0fbcb5a 100644
--- a/netbpfload/netbpfload.mainline.rc
+++ b/netbpfload/netbpfload.35rc
@@ -2,6 +2,7 @@
     capabilities CHOWN SYS_ADMIN NET_ADMIN
     group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system
     user root
+    file /dev/kmsg w
     rlimit memlock 1073741824 1073741824
     oneshot
     reboot_on_failure reboot,bpfloader-failed
diff --git a/netbpfload/netbpfload.rc b/netbpfload/netbpfload.rc
index 14181dc..e1af47f 100644
--- a/netbpfload/netbpfload.rc
+++ b/netbpfload/netbpfload.rc
@@ -17,15 +17,18 @@
 on load_bpf_programs
     exec_start bpfloader
 
-service bpfloader /system/bin/netbpfload
+# Note: This will actually execute /apex/com.android.tethering/bin/netbpfload
+# by virtue of 'service bpfloader' being overridden by the apex shipped .rc
+# Warning: most of the below settings are irrelevant unless the apex is missing.
+service bpfloader /system/bin/false
     # netbpfload will do network bpf loading, then execute /system/bin/bpfloader
-    capabilities CHOWN SYS_ADMIN NET_ADMIN
+    #! capabilities CHOWN SYS_ADMIN NET_ADMIN
     # The following group memberships are a workaround for lack of DAC_OVERRIDE
     # and allow us to open (among other things) files that we created and are
     # no longer root owned (due to CHOWN) but still have group read access to
     # one of the following groups.  This is not perfect, but a more correct
     # solution requires significantly more effort to implement.
-    group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system
+    #! group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system
     user root
     #
     # Set RLIMIT_MEMLOCK to 1GiB for bpfloader
@@ -55,7 +58,7 @@
     #
     # As such we simply use 1GiB as a reasonable approximation of infinity.
     #
-    rlimit memlock 1073741824 1073741824
+    #! rlimit memlock 1073741824 1073741824
     oneshot
     #
     # How to debug bootloops caused by 'bpfloader-failed'.
@@ -81,6 +84,5 @@
     #    'cannot prove return value is 0 or 1' or 'unsupported / unknown operation / helper',
     #    'invalid bpf_context access', etc.
     #
-    reboot_on_failure reboot,bpfloader-failed
-    # we're not really updatable, but want to be able to load bpf programs shipped in apexes
+    reboot_on_failure reboot,netbpfload-missing
     updatable
diff --git a/netd/Android.bp b/netd/Android.bp
index eedbdae..fe4d999 100644
--- a/netd/Android.bp
+++ b/netd/Android.bp
@@ -72,6 +72,8 @@
         "BpfHandlerTest.cpp",
         "BpfBaseTest.cpp",
     ],
+    version_script: ":connectivity_mainline_test_map",
+    stl: "libc++_static",
     static_libs: [
         "libbase",
         "libnetd_updatable",
diff --git a/netd/BpfHandler.cpp b/netd/BpfHandler.cpp
index a00c363..4779b47 100644
--- a/netd/BpfHandler.cpp
+++ b/netd/BpfHandler.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "BpfHandler"
+#define LOG_TAG "NetdUpdatable"
 
 #include "BpfHandler.h"
 
@@ -34,6 +34,7 @@
 namespace net {
 
 using base::unique_fd;
+using base::WaitForProperty;
 using bpf::getSocketCookie;
 using bpf::retrieveProgram;
 using netdutils::Status;
@@ -85,31 +86,6 @@
         return Status("U+ platform with kernel version < 4.14.0 is unsupported");
     }
 
-    if (modules::sdklevel::IsAtLeastV()) {
-        // V bumps the kernel requirement up to 4.19
-        // see also: //system/netd/tests/kernel_test.cpp TestKernel419
-        if (!bpf::isAtLeastKernelVersion(4, 19, 0)) {
-            return Status("V+ platform with kernel version < 4.19.0 is unsupported");
-        }
-
-        // Technically already required by U, but only enforce on V+
-        // see also: //system/netd/tests/kernel_test.cpp TestKernel64Bit
-        if (bpf::isKernel32Bit() && bpf::isAtLeastKernelVersion(5, 16, 0)) {
-            return Status("V+ platform with 32 bit kernel, version >= 5.16.0 is unsupported");
-        }
-    }
-
-    // Linux 6.1 is highest version supported by U, starting with V new kernels,
-    // ie. 6.2+ we are dropping various kernel/system userspace 32-on-64 hacks
-    // (for example "ANDROID: xfrm: remove in_compat_syscall() checks").
-    // Note: this check/enforcement only applies to *system* userspace code,
-    // it does not affect unprivileged apps, the 32-on-64 compatibility
-    // problems are AFAIK limited to various CAP_NET_ADMIN protected interfaces.
-    // see also: //system/bpf/bpfloader/BpfLoader.cpp main()
-    if (bpf::isUserspace32bit() && bpf::isAtLeastKernelVersion(6, 2, 0)) {
-        return Status("32 bit userspace with Kernel version >= 6.2.0 is unsupported");
-    }
-
     // U mandates this mount point (though it should also be the case on T)
     if (modules::sdklevel::IsAtLeastU() && !!strcmp(cg2_path, "/sys/fs/cgroup")) {
         return Status("U+ platform with cg2_path != /sys/fs/cgroup is unsupported");
@@ -134,8 +110,35 @@
     // TODO: delete the if statement once all devices should support cgroup
     // socket filter (ie. the minimum kernel version required is 4.14).
     if (bpf::isAtLeastKernelVersion(4, 14, 0)) {
-        RETURN_IF_NOT_OK(
-                attachProgramToCgroup(CGROUP_SOCKET_PROG_PATH, cg_fd, BPF_CGROUP_INET_SOCK_CREATE));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_INET_CREATE_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_INET_SOCK_CREATE));
+    }
+
+    if (modules::sdklevel::IsAtLeastV()) {
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_CONNECT4_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_INET4_CONNECT));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_CONNECT6_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_INET6_CONNECT));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_UDP4_RECVMSG_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_UDP4_RECVMSG));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_UDP6_RECVMSG_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_UDP6_RECVMSG));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_UDP4_SENDMSG_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_UDP4_SENDMSG));
+        RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_UDP6_SENDMSG_PROG_PATH,
+                                    cg_fd, BPF_CGROUP_UDP6_SENDMSG));
+
+        if (bpf::isAtLeastKernelVersion(5, 4, 0)) {
+            RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_GETSOCKOPT_PROG_PATH,
+                                        cg_fd, BPF_CGROUP_GETSOCKOPT));
+            RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_SETSOCKOPT_PROG_PATH,
+                                        cg_fd, BPF_CGROUP_SETSOCKOPT));
+        }
+
+        if (bpf::isAtLeastKernelVersion(5, 10, 0)) {
+            RETURN_IF_NOT_OK(attachProgramToCgroup(CGROUP_INET_RELEASE_PROG_PATH,
+                                        cg_fd, BPF_CGROUP_INET_SOCK_RELEASE));
+        }
     }
 
     if (bpf::isAtLeastKernelVersion(4, 19, 0)) {
@@ -155,6 +158,24 @@
         if (bpf::queryProgram(cg_fd, BPF_CGROUP_INET6_BIND) <= 0) abort();
     }
 
+    if (modules::sdklevel::IsAtLeastV()) {
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_INET4_CONNECT) <= 0) abort();
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_INET6_CONNECT) <= 0) abort();
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_UDP4_RECVMSG) <= 0) abort();
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_UDP6_RECVMSG) <= 0) abort();
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_UDP4_SENDMSG) <= 0) abort();
+        if (bpf::queryProgram(cg_fd, BPF_CGROUP_UDP6_SENDMSG) <= 0) abort();
+
+        if (bpf::isAtLeastKernelVersion(5, 4, 0)) {
+            if (bpf::queryProgram(cg_fd, BPF_CGROUP_GETSOCKOPT) <= 0) abort();
+            if (bpf::queryProgram(cg_fd, BPF_CGROUP_SETSOCKOPT) <= 0) abort();
+        }
+
+        if (bpf::isAtLeastKernelVersion(5, 10, 0)) {
+            if (bpf::queryProgram(cg_fd, BPF_CGROUP_INET_SOCK_RELEASE) <= 0) abort();
+        }
+    }
+
     return netdutils::status::ok;
 }
 
@@ -165,9 +186,50 @@
 BpfHandler::BpfHandler(uint32_t perUidLimit, uint32_t totalLimit)
     : mPerUidStatsEntriesLimit(perUidLimit), mTotalUidStatsEntriesLimit(totalLimit) {}
 
+static bool mainlineNetBpfLoadDone() {
+    return !access("/sys/fs/bpf/netd_shared/mainline_done", F_OK);
+}
+
+// copied with minor changes from waitForProgsLoaded()
+// p/m/C's staticlibs/native/bpf_headers/include/bpf/WaitForProgsLoaded.h
+static inline void waitForNetProgsLoaded() {
+    // infinite loop until success with 5/10/20/40/60/60/60... delay
+    for (int delay = 5;; delay *= 2) {
+        if (delay > 60) delay = 60;
+        if (WaitForProperty("init.svc.mdnsd_netbpfload", "stopped", std::chrono::seconds(delay))
+            && mainlineNetBpfLoadDone())
+            return;
+        ALOGW("Waited %ds for init.svc.mdnsd_netbpfload=stopped, still waiting...", delay);
+    }
+}
+
 Status BpfHandler::init(const char* cg2_path) {
-    // Make sure BPF programs are loaded before doing anything
-    android::bpf::waitForProgsLoaded();
+    // Note: netd *can* be restarted, so this might get called a second time after boot is complete
+    // at which point we don't need to (and shouldn't) wait for (more importantly start) loading bpf
+
+    if (base::GetProperty("bpf.progs_loaded", "") != "1") {
+        // AOSP platform netd & mainline don't need this (at least prior to U QPR3),
+        // but there could be platform provided (xt_)bpf programs that oem/vendor
+        // modified netd (which calls us during init) depends on...
+        ALOGI("Waiting for platform BPF programs");
+        android::bpf::waitForProgsLoaded();
+    }
+
+    if (!mainlineNetBpfLoadDone()) {
+        // We're on < U QPR3 & it's the first time netd is starting up (unless crashlooping)
+        //
+        // On U QPR3+ netbpfload is guaranteed to run before the platform bpfloader,
+        // so waitForProgsLoaded() implies mainlineNetBpfLoadDone().
+        if (!base::SetProperty("ctl.start", "mdnsd_netbpfload")) {
+            ALOGE("Failed to set property ctl.start=mdnsd_netbpfload, see dmesg for reason.");
+            abort();
+        }
+
+        ALOGI("Waiting for Networking BPF programs");
+        waitForNetProgsLoaded();
+        ALOGI("Networking BPF programs are loaded");
+    }
+
     ALOGI("BPF programs are loaded");
 
     RETURN_IF_NOT_OK(initPrograms(cg2_path));
@@ -176,7 +238,30 @@
     return netdutils::status::ok;
 }
 
+static void mapLockTest(void) {
+    // The maps must be R/W, and as yet unopened (or more specifically not yet lock'ed).
+    const char * const m1 = BPF_NETD_PATH "map_netd_lock_array_test_map";
+    const char * const m2 = BPF_NETD_PATH "map_netd_lock_hash_test_map";
+
+    unique_fd fd0(bpf::mapRetrieveExclusiveRW(m1)); if (!fd0.ok()) abort();  // grabs exclusive lock
+
+    unique_fd fd1(bpf::mapRetrieveExclusiveRW(m2)); if (!fd1.ok()) abort();  // no conflict with fd0
+    unique_fd fd2(bpf::mapRetrieveExclusiveRW(m2)); if ( fd2.ok()) abort();  // busy due to fd1
+    unique_fd fd3(bpf::mapRetrieveRO(m2));          if (!fd3.ok()) abort();  // no lock taken
+    unique_fd fd4(bpf::mapRetrieveRW(m2));          if ( fd4.ok()) abort();  // busy due to fd1
+    fd1.reset();  // releases exclusive lock
+    unique_fd fd5(bpf::mapRetrieveRO(m2));          if (!fd5.ok()) abort();  // no lock taken
+    unique_fd fd6(bpf::mapRetrieveRW(m2));          if (!fd6.ok()) abort();  // now ok
+    unique_fd fd7(bpf::mapRetrieveRO(m2));          if (!fd7.ok()) abort();  // no lock taken
+    unique_fd fd8(bpf::mapRetrieveExclusiveRW(m2)); if ( fd8.ok()) abort();  // busy due to fd6
+
+    fd0.reset();  // releases exclusive lock
+    unique_fd fd9(bpf::mapRetrieveWO(m1));          if (!fd9.ok()) abort();  // grabs exclusive lock
+}
+
 Status BpfHandler::initMaps() {
+    mapLockTest();
+
     RETURN_IF_NOT_OK(mStatsMapA.init(STATS_MAP_A_PATH));
     RETURN_IF_NOT_OK(mStatsMapB.init(STATS_MAP_B_PATH));
     RETURN_IF_NOT_OK(mConfigurationMap.init(CONFIGURATION_MAP_PATH));
diff --git a/remoteauth/service/jni/Android.bp b/remoteauth/service/jni/Android.bp
index c0ac779..fc91e0c 100644
--- a/remoteauth/service/jni/Android.bp
+++ b/remoteauth/service/jni/Android.bp
@@ -12,7 +12,7 @@
     srcs: ["src/lib.rs"],
     rustlibs: [
         "libbinder_rs",
-        "libjni",
+        "libjni_legacy",
         "liblazy_static",
         "liblog_rust",
         "liblogger",
diff --git a/service-t/Android.bp b/service-t/Android.bp
index 779f354..96efd18 100644
--- a/service-t/Android.bp
+++ b/service-t/Android.bp
@@ -100,7 +100,7 @@
     min_sdk_version: "21",
     lint: {
         error_checks: ["NewApi"],
-
+        baseline_filename: "lint-baseline-service-connectivity-mdns-standalone-build-test.xml",
     },
     srcs: [
         "src/com/android/server/connectivity/mdns/**/*.java",
diff --git a/service-t/lint-baseline-service-connectivity-mdns-standalone-build-test.xml b/service-t/lint-baseline-service-connectivity-mdns-standalone-build-test.xml
new file mode 100644
index 0000000..232d31c
--- /dev/null
+++ b/service-t/lint-baseline-service-connectivity-mdns-standalone-build-test.xml
@@ -0,0 +1,972 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<issues format="6" by="lint 8.4.0-alpha08" type="baseline" client="" dependencies="true" name="" variant="all" version="8.4.0-alpha08">
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadEngine.java"
+            line="37"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadEngine.java"
+            line="37"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadEngine.java"
+            line="37"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadEngine.java"
+            line="37"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadEngine.java"
+            line="37"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
+    </issue>
+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
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+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
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+
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+        id="FlaggedApi"
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+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
+    <issue
+        id="FlaggedApi"
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+
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+        id="FlaggedApi"
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+
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+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
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+
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+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+        <location
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+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+            line="43"
+            column="13"/>
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="packages/modules/Connectivity/framework-t/src/android/net/nsd/OffloadServiceInfo.java"
+            line="43"
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+
+    <issue
+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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+
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+        id="FlaggedApi"
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+
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+        id="FlaggedApi"
+        message="@FlaggedApi should specify an actual flag constant; raw strings are discouraged (and more importantly, **not enforced**)"
+        errorLine1="@FlaggedApi(&quot;com.android.net.flags.register_nsd_offload_engine_api&quot;)"
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diff --git a/service-t/native/libs/libnetworkstats/Android.bp b/service-t/native/libs/libnetworkstats/Android.bp
index c620634..b1925bd 100644
--- a/service-t/native/libs/libnetworkstats/Android.bp
+++ b/service-t/native/libs/libnetworkstats/Android.bp
@@ -76,6 +76,8 @@
         "-Wno-unused-parameter",
         "-Wthread-safety",
     ],
+    version_script: ":connectivity_mainline_test_map",
+    stl: "libc++_static",
     static_libs: [
         "libbase",
         "libgmock",
diff --git a/service-t/src/com/android/metrics/NetworkNsdReportedMetrics.java b/service-t/src/com/android/metrics/NetworkNsdReportedMetrics.java
index 42a922d..a92dfaf 100644
--- a/service-t/src/com/android/metrics/NetworkNsdReportedMetrics.java
+++ b/service-t/src/com/android/metrics/NetworkNsdReportedMetrics.java
@@ -193,7 +193,8 @@
      * @param sentQueryCount The count of sent queries before stop discovery.
      */
     public void reportServiceDiscoveryStop(boolean isLegacy, int transactionId, long durationMs,
-            int foundCallbackCount, int lostCallbackCount, int servicesCount, int sentQueryCount) {
+            int foundCallbackCount, int lostCallbackCount, int servicesCount, int sentQueryCount,
+            boolean isServiceFromCache) {
         final Builder builder = makeReportedBuilder(isLegacy, transactionId);
         builder.setType(NsdEventType.NET_DISCOVER);
         builder.setQueryResult(MdnsQueryResult.MQR_SERVICE_DISCOVERY_STOP);
@@ -202,6 +203,7 @@
         builder.setLostCallbackCount(lostCallbackCount);
         builder.setFoundServiceCount(servicesCount);
         builder.setSentQueryCount(sentQueryCount);
+        builder.setIsKnownService(isServiceFromCache);
         mDependencies.statsWrite(builder.build());
     }
 
@@ -247,12 +249,15 @@
      * @param isLegacy Whether this call is using legacy backend.
      * @param transactionId The transaction id of service resolution.
      * @param durationMs The duration before stop resolving the service.
+     * @param sentQueryCount The count of sent queries during resolving.
      */
-    public void reportServiceResolutionStop(boolean isLegacy, int transactionId, long durationMs) {
+    public void reportServiceResolutionStop(boolean isLegacy, int transactionId, long durationMs,
+            int sentQueryCount) {
         final Builder builder = makeReportedBuilder(isLegacy, transactionId);
         builder.setType(NsdEventType.NET_RESOLVE);
         builder.setQueryResult(MdnsQueryResult.MQR_SERVICE_RESOLUTION_STOP);
         builder.setEventDurationMillisec(durationMs);
+        builder.setSentQueryCount(sentQueryCount);
         mDependencies.statsWrite(builder.build());
     }
 
diff --git a/service-t/src/com/android/server/IpSecService.java b/service-t/src/com/android/server/IpSecService.java
index ea91e64..54b9ced 100644
--- a/service-t/src/com/android/server/IpSecService.java
+++ b/service-t/src/com/android/server/IpSecService.java
@@ -1877,6 +1877,10 @@
         mContext.enforceCallingOrSelfPermission(
                 android.Manifest.permission.ACCESS_NETWORK_STATE, "IpsecService#getTransformState");
 
+        if (transformId == INVALID_RESOURCE_ID) {
+            throw new IllegalStateException("This transform is already closed");
+        }
+
         UserRecord userRecord = mUserResourceTracker.getUserRecord(Binder.getCallingUid());
         TransformRecord transformInfo =
                 userRecord.mTransformRecords.getResourceOrThrow(transformId);
diff --git a/service-t/src/com/android/server/NsdService.java b/service-t/src/com/android/server/NsdService.java
index cfb1a33..64624ae 100644
--- a/service-t/src/com/android/server/NsdService.java
+++ b/service-t/src/com/android/server/NsdService.java
@@ -201,6 +201,7 @@
     private static final int NO_SENT_QUERY_COUNT = 0;
     private static final int DISCOVERY_QUERY_SENT_CALLBACK = 1000;
     private static final int MAX_SUBTYPE_COUNT = 100;
+    private static final int DNSSEC_PROTOCOL = 3;
     private static final SharedLog LOGGER = new SharedLog("serviceDiscovery");
 
     private final Context mContext;
@@ -275,7 +276,7 @@
     }
 
     @VisibleForTesting
-    static class MdnsListener implements MdnsServiceBrowserListener {
+    abstract static class MdnsListener implements MdnsServiceBrowserListener {
         protected final int mClientRequestId;
         protected final int mTransactionId;
         @NonNull
@@ -321,6 +322,10 @@
 
         @Override
         public void onFailedToParseMdnsResponse(int receivedPacketNumber, int errorCode) { }
+
+        // Ensure toString gets overridden
+        @NonNull
+        public abstract String toString();
     }
 
     private class DiscoveryListener extends MdnsListener {
@@ -351,13 +356,21 @@
             mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
                     DISCOVERY_QUERY_SENT_CALLBACK, new MdnsEvent(mClientRequestId));
         }
+
+        @NonNull
+        @Override
+        public String toString() {
+            return String.format("DiscoveryListener: serviceType=%s", getListenedServiceType());
+        }
     }
 
     private class ResolutionListener extends MdnsListener {
+        private final String mServiceName;
 
         ResolutionListener(int clientRequestId, int transactionId,
-                @NonNull String listenServiceType) {
+                @NonNull String listenServiceType, @NonNull String serviceName) {
             super(clientRequestId, transactionId, listenServiceType);
+            mServiceName = serviceName;
         }
 
         @Override
@@ -373,13 +386,22 @@
             mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
                     DISCOVERY_QUERY_SENT_CALLBACK, new MdnsEvent(mClientRequestId));
         }
+
+        @NonNull
+        @Override
+        public String toString() {
+            return String.format("ResolutionListener serviceName=%s, serviceType=%s",
+                    mServiceName, getListenedServiceType());
+        }
     }
 
     private class ServiceInfoListener extends MdnsListener {
+        private final String mServiceName;
 
         ServiceInfoListener(int clientRequestId, int transactionId,
-                @NonNull String listenServiceType) {
+                @NonNull String listenServiceType, @NonNull String serviceName) {
             super(clientRequestId, transactionId, listenServiceType);
+            this.mServiceName = serviceName;
         }
 
         @Override
@@ -410,6 +432,13 @@
             mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
                     DISCOVERY_QUERY_SENT_CALLBACK, new MdnsEvent(mClientRequestId));
         }
+
+        @NonNull
+        @Override
+        public String toString() {
+            return String.format("ServiceInfoListener serviceName=%s, serviceType=%s",
+                    mServiceName, getListenedServiceType());
+        }
     }
 
     private class SocketRequestMonitor implements MdnsSocketProvider.SocketRequestMonitor {
@@ -656,9 +685,12 @@
             }
 
             private void storeAdvertiserRequestMap(int clientRequestId, int transactionId,
-                    ClientInfo clientInfo, @Nullable Network requestedNetwork) {
+                    ClientInfo clientInfo, @NonNull NsdServiceInfo serviceInfo) {
+                final String serviceFullName =
+                        serviceInfo.getServiceName() + "." + serviceInfo.getServiceType();
                 clientInfo.mClientRequests.put(clientRequestId, new AdvertiserClientRequest(
-                        transactionId, requestedNetwork, mClock.elapsedRealtime()));
+                        transactionId, serviceInfo.getNetwork(), serviceFullName,
+                        mClock.elapsedRealtime()));
                 mTransactionIdToClientInfoMap.put(transactionId, clientInfo);
                 updateMulticastLock();
             }
@@ -978,6 +1010,17 @@
                                 break;
                             }
 
+                            if (!checkPublicKey(serviceInfo.getPublicKey())) {
+                                Log.e(TAG,
+                                        "Invalid public key: "
+                                                + Arrays.toString(serviceInfo.getPublicKey()));
+                                clientInfo.onRegisterServiceFailedImmediately(
+                                        clientRequestId,
+                                        NsdManager.FAILURE_BAD_PARAMETERS,
+                                        false /* isLegacy */);
+                                break;
+                            }
+
                             Set<String> subtypes = new ArraySet<>(serviceInfo.getSubtypes());
                             if (typeSubtype != null && typeSubtype.second != null) {
                                 for (String subType : typeSubtype.second) {
@@ -1010,7 +1053,7 @@
                             mAdvertiser.addOrUpdateService(transactionId, serviceInfo,
                                     mdnsAdvertisingOptions, clientInfo.mUid);
                             storeAdvertiserRequestMap(clientRequestId, transactionId, clientInfo,
-                                    serviceInfo.getNetwork());
+                                    serviceInfo);
                         } else {
                             maybeStartDaemon();
                             transactionId = getUniqueId();
@@ -1104,9 +1147,12 @@
 
                             maybeStartMonitoringSockets();
                             final MdnsListener listener = new ResolutionListener(clientRequestId,
-                                    transactionId, resolveServiceType);
+                                    transactionId, resolveServiceType, info.getServiceName());
+                            final int ifaceIdx = info.getNetwork() != null
+                                    ? 0 : info.getInterfaceIndex();
                             final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
                                     .setNetwork(info.getNetwork())
+                                    .setInterfaceIndex(ifaceIdx)
                                     .setQueryMode(mMdnsFeatureFlags.isAggressiveQueryModeEnabled()
                                             ? AGGRESSIVE_QUERY_MODE
                                             : PASSIVE_QUERY_MODE)
@@ -1204,9 +1250,12 @@
 
                         maybeStartMonitoringSockets();
                         final MdnsListener listener = new ServiceInfoListener(clientRequestId,
-                                transactionId, resolveServiceType);
+                                transactionId, resolveServiceType, info.getServiceName());
+                        final int ifIndex = info.getNetwork() != null
+                                ? 0 : info.getInterfaceIndex();
                         final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
                                 .setNetwork(info.getNetwork())
+                                .setInterfaceIndex(ifIndex)
                                 .setQueryMode(mMdnsFeatureFlags.isAggressiveQueryModeEnabled()
                                         ? AGGRESSIVE_QUERY_MODE
                                         : PASSIVE_QUERY_MODE)
@@ -1585,6 +1634,12 @@
                         NsdManager.nameOf(code), transactionId));
                 switch (code) {
                     case NsdManager.SERVICE_FOUND:
+                        // Set the ServiceFromCache flag only if the service is actually being
+                        // retrieved from the cache. This flag should not be overridden by later
+                        // service found event, which may not be cached.
+                        if (event.mIsServiceFromCache) {
+                            request.setServiceFromCache(true);
+                        }
                         clientInfo.onServiceFound(clientRequestId, info, request);
                         break;
                     case NsdManager.SERVICE_LOST:
@@ -1788,15 +1843,42 @@
      * <p>For now NsdService only allows single-label hostnames conforming to RFC 1035. In other
      * words, the hostname should be at most 63 characters long and it only contains letters, digits
      * and hyphens.
+     *
+     * <p>Additionally, this allows hostname starting with a digit to support Matter devices. Per
+     * Matter spec 4.3.1.1:
+     *
+     * <p>The target host name SHALL be constructed using one of the available link-layer addresses,
+     * such as a 48-bit device MAC address (for Ethernet and Wi‑Fi) or a 64-bit MAC Extended Address
+     * (for Thread) expressed as a fixed-length twelve-character (or sixteen-character) hexadecimal
+     * string, encoded as ASCII (UTF-8) text using capital letters, e.g., B75AFB458ECD.<domain>.
      */
     public static boolean checkHostname(@Nullable String hostname) {
         if (hostname == null) {
             return true;
         }
-        String HOSTNAME_REGEX = "^[a-zA-Z]([a-zA-Z0-9-_]{0,61}[a-zA-Z0-9])?$";
+        String HOSTNAME_REGEX = "^[a-zA-Z0-9]([a-zA-Z0-9-_]{0,61}[a-zA-Z0-9])?$";
         return Pattern.compile(HOSTNAME_REGEX).matcher(hostname).matches();
     }
 
+    /**
+     * Checks if the public key is valid.
+     *
+     * <p>For simplicity, it only checks if the protocol is DNSSEC and the RDATA is not fewer than 4
+     * bytes. See RFC 3445 Section 3.
+     *
+     * <p>Message format: flags (2 bytes), protocol (1 byte), algorithm (1 byte), public key.
+     */
+    private static boolean checkPublicKey(@Nullable byte[] publicKey) {
+        if (publicKey == null) {
+            return true;
+        }
+        if (publicKey.length < 4) {
+            return false;
+        }
+        int protocol = publicKey[2];
+        return protocol == DNSSEC_PROTOCOL;
+    }
+
     /** Returns {@code true} if {@code subtype} is a valid DNS-SD subtype label. */
     private static boolean checkSubtypeLabel(String subtype) {
         return Pattern.compile("^" + SUBTYPE_LABEL_REGEX + "$").matcher(subtype).matches();
@@ -1841,16 +1923,18 @@
                         mContext, MdnsFeatureFlags.NSD_FORCE_DISABLE_MDNS_OFFLOAD))
                 .setIncludeInetAddressRecordsInProbing(mDeps.isFeatureEnabled(
                         mContext, MdnsFeatureFlags.INCLUDE_INET_ADDRESS_RECORDS_IN_PROBING))
-                .setIsExpiredServicesRemovalEnabled(mDeps.isFeatureEnabled(
+                .setIsExpiredServicesRemovalEnabled(mDeps.isTetheringFeatureNotChickenedOut(
                         mContext, MdnsFeatureFlags.NSD_EXPIRED_SERVICES_REMOVAL))
                 .setIsLabelCountLimitEnabled(mDeps.isTetheringFeatureNotChickenedOut(
                         mContext, MdnsFeatureFlags.NSD_LIMIT_LABEL_COUNT))
-                .setIsKnownAnswerSuppressionEnabled(mDeps.isFeatureEnabled(
+                .setIsKnownAnswerSuppressionEnabled(mDeps.isTetheringFeatureNotChickenedOut(
                         mContext, MdnsFeatureFlags.NSD_KNOWN_ANSWER_SUPPRESSION))
-                .setIsUnicastReplyEnabled(mDeps.isFeatureEnabled(
+                .setIsUnicastReplyEnabled(mDeps.isTetheringFeatureNotChickenedOut(
                         mContext, MdnsFeatureFlags.NSD_UNICAST_REPLY_ENABLED))
                 .setIsAggressiveQueryModeEnabled(mDeps.isFeatureEnabled(
                         mContext, MdnsFeatureFlags.NSD_AGGRESSIVE_QUERY_MODE))
+                .setIsQueryWithKnownAnswerEnabled(mDeps.isFeatureEnabled(
+                        mContext, MdnsFeatureFlags.NSD_QUERY_WITH_KNOWN_ANSWER))
                 .setOverrideProvider(flag -> mDeps.isFeatureEnabled(
                         mContext, FORCE_ENABLE_FLAG_FOR_TEST_PREFIX + flag))
                 .build();
@@ -2543,6 +2627,17 @@
         // Dump state machine logs
         mNsdStateMachine.dump(fd, pw, args);
 
+        // Dump clients
+        pw.println();
+        pw.println("Active clients:");
+        pw.increaseIndent();
+        HandlerUtils.runWithScissorsForDump(mNsdStateMachine.getHandler(), () -> {
+            for (ClientInfo clientInfo : mClients.values()) {
+                pw.println(clientInfo.toString());
+            }
+        }, 10_000);
+        pw.decreaseIndent();
+
         // Dump service and clients logs
         pw.println();
         pw.println("Logs:");
@@ -2615,6 +2710,21 @@
         public int getSentQueryCount() {
             return mSentQueryCount;
         }
+
+        @NonNull
+        @Override
+        public String toString() {
+            return getRequestDescriptor() + " {" + mTransactionId
+                    + ", startTime " + mStartTimeMs
+                    + ", foundServices " + mFoundServiceCount
+                    + ", lostServices " + mLostServiceCount
+                    + ", fromCache " + mIsServiceFromCache
+                    + ", sentQueries " + mSentQueryCount
+                    + "}";
+        }
+
+        @NonNull
+        protected abstract String getRequestDescriptor();
     }
 
     private static class LegacyClientRequest extends ClientRequest {
@@ -2624,6 +2734,12 @@
             super(transactionId, startTimeMs);
             mRequestCode = requestCode;
         }
+
+        @NonNull
+        @Override
+        protected String getRequestDescriptor() {
+            return "Legacy (" + mRequestCode + ")";
+        }
     }
 
     private abstract static class JavaBackendClientRequest extends ClientRequest {
@@ -2643,9 +2759,20 @@
     }
 
     private static class AdvertiserClientRequest extends JavaBackendClientRequest {
+        @NonNull
+        private final String mServiceFullName;
+
         private AdvertiserClientRequest(int transactionId, @Nullable Network requestedNetwork,
-                long startTimeMs) {
+                @NonNull String serviceFullName, long startTimeMs) {
             super(transactionId, requestedNetwork, startTimeMs);
+            mServiceFullName = serviceFullName;
+        }
+
+        @NonNull
+        @Override
+        public String getRequestDescriptor() {
+            return String.format("Advertiser: serviceFullName=%s, net=%s",
+                    mServiceFullName, getRequestedNetwork());
         }
     }
 
@@ -2658,6 +2785,12 @@
             super(transactionId, requestedNetwork, startTimeMs);
             mListener = listener;
         }
+
+        @NonNull
+        @Override
+        public String getRequestDescriptor() {
+            return String.format("Discovery/%s, net=%s", mListener, getRequestedNetwork());
+        }
     }
 
     /* Information tracked per client */
@@ -2702,17 +2835,15 @@
         @Override
         public String toString() {
             StringBuilder sb = new StringBuilder();
-            sb.append("mResolvedService ").append(mResolvedService).append("\n");
-            sb.append("mIsLegacy ").append(mIsPreSClient).append("\n");
-            sb.append("mUseJavaBackend ").append(mUseJavaBackend).append("\n");
-            sb.append("mUid ").append(mUid).append("\n");
+            sb.append("mUid ").append(mUid).append(", ");
+            sb.append("mResolvedService ").append(mResolvedService).append(", ");
+            sb.append("mIsLegacy ").append(mIsPreSClient).append(", ");
+            sb.append("mUseJavaBackend ").append(mUseJavaBackend).append(", ");
+            sb.append("mClientRequests:\n");
             for (int i = 0; i < mClientRequests.size(); i++) {
                 int clientRequestId = mClientRequests.keyAt(i);
-                sb.append("clientRequestId ")
-                        .append(clientRequestId)
-                        .append(" transactionId ").append(mClientRequests.valueAt(i).mTransactionId)
-                        .append(" type ").append(
-                                mClientRequests.valueAt(i).getClass().getSimpleName())
+                sb.append("  ").append(clientRequestId)
+                        .append(": ").append(mClientRequests.valueAt(i).toString())
                         .append("\n");
             }
             return sb.toString();
@@ -2762,10 +2893,12 @@
                                 request.getFoundServiceCount(),
                                 request.getLostServiceCount(),
                                 request.getServicesCount(),
-                                request.getSentQueryCount());
+                                request.getSentQueryCount(),
+                                request.isServiceFromCache());
                     } else if (listener instanceof ResolutionListener) {
                         mMetrics.reportServiceResolutionStop(false /* isLegacy */, transactionId,
-                                request.calculateRequestDurationMs(mClock.elapsedRealtime()));
+                                request.calculateRequestDurationMs(mClock.elapsedRealtime()),
+                                request.getSentQueryCount());
                     } else if (listener instanceof ServiceInfoListener) {
                         mMetrics.reportServiceInfoCallbackUnregistered(transactionId,
                                 request.calculateRequestDurationMs(mClock.elapsedRealtime()),
@@ -2801,12 +2934,14 @@
                                 request.getFoundServiceCount(),
                                 request.getLostServiceCount(),
                                 request.getServicesCount(),
-                                NO_SENT_QUERY_COUNT);
+                                NO_SENT_QUERY_COUNT,
+                                request.isServiceFromCache());
                         break;
                     case NsdManager.RESOLVE_SERVICE:
                         stopResolveService(transactionId);
                         mMetrics.reportServiceResolutionStop(true /* isLegacy */, transactionId,
-                                request.calculateRequestDurationMs(mClock.elapsedRealtime()));
+                                request.calculateRequestDurationMs(mClock.elapsedRealtime()),
+                                NO_SENT_QUERY_COUNT);
                         break;
                     case NsdManager.REGISTER_SERVICE:
                         unregisterService(transactionId);
@@ -2923,7 +3058,8 @@
                     request.getFoundServiceCount(),
                     request.getLostServiceCount(),
                     request.getServicesCount(),
-                    request.getSentQueryCount());
+                    request.getSentQueryCount(),
+                    request.isServiceFromCache());
             try {
                 mCb.onStopDiscoverySucceeded(listenerKey);
             } catch (RemoteException e) {
@@ -3022,7 +3158,8 @@
             mMetrics.reportServiceResolutionStop(
                     isLegacyClientRequest(request),
                     request.mTransactionId,
-                    request.calculateRequestDurationMs(mClock.elapsedRealtime()));
+                    request.calculateRequestDurationMs(mClock.elapsedRealtime()),
+                    request.getSentQueryCount());
             try {
                 mCb.onStopResolutionSucceeded(listenerKey);
             } catch (RemoteException e) {
diff --git a/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java b/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
index c4d3338..54943c7 100644
--- a/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
+++ b/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
@@ -23,6 +23,7 @@
 import android.text.TextUtils;
 import android.util.Pair;
 
+import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.SharedLog;
 import com.android.server.connectivity.mdns.util.MdnsUtils;
 
@@ -63,8 +64,6 @@
     @NonNull
     private final WeakReference<MdnsSocketClientBase> weakRequestSender;
     @NonNull
-    private final MdnsPacketWriter packetWriter;
-    @NonNull
     private final String[] serviceTypeLabels;
     @NonNull
     private final List<String> subtypes;
@@ -79,11 +78,16 @@
     private final MdnsUtils.Clock clock;
     @NonNull
     private final SharedLog sharedLog;
+    @NonNull
+    private final MdnsServiceTypeClient.Dependencies dependencies;
     private final boolean onlyUseIpv6OnIpv6OnlyNetworks;
+    private final byte[] packetCreationBuffer = new byte[1500]; // TODO: use interface MTU
+    @NonNull
+    private final List<MdnsResponse> existingServices;
+    private final boolean isQueryWithKnownAnswer;
 
     EnqueueMdnsQueryCallable(
             @NonNull MdnsSocketClientBase requestSender,
-            @NonNull MdnsPacketWriter packetWriter,
             @NonNull String serviceType,
             @NonNull Collection<String> subtypes,
             boolean expectUnicastResponse,
@@ -93,9 +97,11 @@
             boolean sendDiscoveryQueries,
             @NonNull Collection<MdnsResponse> servicesToResolve,
             @NonNull MdnsUtils.Clock clock,
-            @NonNull SharedLog sharedLog) {
+            @NonNull SharedLog sharedLog,
+            @NonNull MdnsServiceTypeClient.Dependencies dependencies,
+            @NonNull Collection<MdnsResponse> existingServices,
+            boolean isQueryWithKnownAnswer) {
         weakRequestSender = new WeakReference<>(requestSender);
-        this.packetWriter = packetWriter;
         serviceTypeLabels = TextUtils.split(serviceType, "\\.");
         this.subtypes = new ArrayList<>(subtypes);
         this.expectUnicastResponse = expectUnicastResponse;
@@ -106,6 +112,9 @@
         this.servicesToResolve = new ArrayList<>(servicesToResolve);
         this.clock = clock;
         this.sharedLog = sharedLog;
+        this.dependencies = dependencies;
+        this.existingServices = new ArrayList<>(existingServices);
+        this.isQueryWithKnownAnswer = isQueryWithKnownAnswer;
     }
 
     /**
@@ -176,62 +185,86 @@
                 return Pair.create(INVALID_TRANSACTION_ID, new ArrayList<>());
             }
 
+            // Put the existing ptr records into known-answer section.
+            final List<MdnsRecord> knownAnswers = new ArrayList<>();
+            if (sendDiscoveryQueries) {
+                for (MdnsResponse existingService : existingServices) {
+                    for (MdnsPointerRecord ptrRecord : existingService.getPointerRecords()) {
+                        // Ignore any PTR records that don't match the current query.
+                        if (!CollectionUtils.any(questions,
+                                q -> q instanceof MdnsPointerRecord
+                                        && MdnsUtils.equalsDnsLabelIgnoreDnsCase(
+                                                q.getName(), ptrRecord.getName()))) {
+                            continue;
+                        }
+
+                        knownAnswers.add(new MdnsPointerRecord(
+                                ptrRecord.getName(),
+                                ptrRecord.getReceiptTime(),
+                                ptrRecord.getCacheFlush(),
+                                ptrRecord.getRemainingTTL(now), // Put the remaining ttl.
+                                ptrRecord.getPointer()));
+                    }
+                }
+            }
+
             final MdnsPacket queryPacket = new MdnsPacket(
                     transactionId,
                     MdnsConstants.FLAGS_QUERY,
                     questions,
-                    Collections.emptyList(), /* answers */
+                    knownAnswers,
                     Collections.emptyList(), /* authorityRecords */
                     Collections.emptyList() /* additionalRecords */);
-            MdnsUtils.writeMdnsPacket(packetWriter, queryPacket);
-            sendPacketToIpv4AndIpv6(requestSender, MdnsConstants.MDNS_PORT);
+            sendPacketToIpv4AndIpv6(requestSender, MdnsConstants.MDNS_PORT, queryPacket);
             for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
-                sendPacketToIpv4AndIpv6(requestSender, emulatorPort);
+                sendPacketToIpv4AndIpv6(requestSender, emulatorPort, queryPacket);
             }
             return Pair.create(transactionId, subtypes);
-        } catch (IOException e) {
+        } catch (Exception e) {
             sharedLog.e(String.format("Failed to create mDNS packet for subtype: %s.",
                     TextUtils.join(",", subtypes)), e);
             return Pair.create(INVALID_TRANSACTION_ID, new ArrayList<>());
         }
     }
 
-    private void sendPacket(MdnsSocketClientBase requestSender, InetSocketAddress address)
-            throws IOException {
-        DatagramPacket packet = packetWriter.getPacket(address);
+    private void sendPacket(MdnsSocketClientBase requestSender, InetSocketAddress address,
+            MdnsPacket mdnsPacket) throws IOException {
+        final List<DatagramPacket> packets = dependencies.getDatagramPacketsFromMdnsPacket(
+                packetCreationBuffer, mdnsPacket, address, isQueryWithKnownAnswer);
         if (expectUnicastResponse) {
             // MdnsMultinetworkSocketClient is only available on T+
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
                     && requestSender instanceof MdnsMultinetworkSocketClient) {
                 ((MdnsMultinetworkSocketClient) requestSender).sendPacketRequestingUnicastResponse(
-                        packet, socketKey, onlyUseIpv6OnIpv6OnlyNetworks);
+                        packets, socketKey, onlyUseIpv6OnIpv6OnlyNetworks);
             } else {
                 requestSender.sendPacketRequestingUnicastResponse(
-                        packet, onlyUseIpv6OnIpv6OnlyNetworks);
+                        packets, onlyUseIpv6OnIpv6OnlyNetworks);
             }
         } else {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
                     && requestSender instanceof MdnsMultinetworkSocketClient) {
                 ((MdnsMultinetworkSocketClient) requestSender)
                         .sendPacketRequestingMulticastResponse(
-                                packet, socketKey, onlyUseIpv6OnIpv6OnlyNetworks);
+                                packets, socketKey, onlyUseIpv6OnIpv6OnlyNetworks);
             } else {
                 requestSender.sendPacketRequestingMulticastResponse(
-                        packet, onlyUseIpv6OnIpv6OnlyNetworks);
+                        packets, onlyUseIpv6OnIpv6OnlyNetworks);
             }
         }
     }
 
-    private void sendPacketToIpv4AndIpv6(MdnsSocketClientBase requestSender, int port) {
+    private void sendPacketToIpv4AndIpv6(MdnsSocketClientBase requestSender, int port,
+            MdnsPacket mdnsPacket) {
         try {
             sendPacket(requestSender,
-                    new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), port));
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), port), mdnsPacket);
         } catch (IOException e) {
             sharedLog.e("Can't send packet to IPv4", e);
         }
         try {
             sendPacket(requestSender,
-                    new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), port));
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), port), mdnsPacket);
         } catch (IOException e) {
             sharedLog.e("Can't send packet to IPv6", e);
         }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java b/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
index c162bcc..b870477 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
@@ -241,13 +241,10 @@
         }
 
         @Override
-        public void onDestroyed(@NonNull MdnsInterfaceSocket socket) {
-            for (int i = mAdvertiserRequests.size() - 1; i >= 0; i--) {
-                if (mAdvertiserRequests.valueAt(i).onAdvertiserDestroyed(socket)) {
-                    mAdvertiserRequests.removeAt(i);
-                }
-            }
-            mAllAdvertisers.remove(socket);
+        public void onAllServicesRemoved(@NonNull MdnsInterfaceSocket socket) {
+            if (DBG) { mSharedLog.i("onAllServicesRemoved: " + socket); }
+            // Try destroying the advertiser if all services has been removed
+            destroyAdvertiser(socket, false /* interfaceDestroyed */);
         }
     };
 
@@ -318,6 +315,30 @@
     }
 
     /**
+     * Destroys the advertiser for the interface indicated by {@code socket}.
+     *
+     * {@code interfaceDestroyed} should be set to {@code true} if this method is called because
+     * the associated interface has been destroyed.
+     */
+    private void destroyAdvertiser(MdnsInterfaceSocket socket, boolean interfaceDestroyed) {
+        InterfaceAdvertiserRequest advertiserRequest;
+
+        MdnsInterfaceAdvertiser advertiser = mAllAdvertisers.remove(socket);
+        if (advertiser != null) {
+            advertiser.destroyNow();
+            if (DBG) { mSharedLog.i("MdnsInterfaceAdvertiser is destroyed: " + advertiser); }
+        }
+
+        for (int i = mAdvertiserRequests.size() - 1; i >= 0; i--) {
+            advertiserRequest = mAdvertiserRequests.valueAt(i);
+            if (advertiserRequest.onAdvertiserDestroyed(socket, interfaceDestroyed)) {
+                if (DBG) { mSharedLog.i("AdvertiserRequest is removed: " + advertiserRequest); }
+                mAdvertiserRequests.removeAt(i);
+            }
+        }
+    }
+
+    /**
      * A request for a {@link MdnsInterfaceAdvertiser}.
      *
      * This class tracks services to be advertised on all sockets provided via a registered
@@ -336,13 +357,22 @@
         }
 
         /**
-         * Called when an advertiser was destroyed, after all services were unregistered and it sent
-         * exit announcements, or the interface is gone.
+         * Called when the interface advertiser associated with {@code socket} has been destroyed.
          *
-         * @return true if this {@link InterfaceAdvertiserRequest} should now be deleted.
+         * {@code interfaceDestroyed} should be set to {@code true} if this method is called because
+         * the associated interface has been destroyed.
+         *
+         * @return true if the {@link InterfaceAdvertiserRequest} should now be deleted
          */
-        boolean onAdvertiserDestroyed(@NonNull MdnsInterfaceSocket socket) {
+        boolean onAdvertiserDestroyed(
+                @NonNull MdnsInterfaceSocket socket, boolean interfaceDestroyed) {
             final MdnsInterfaceAdvertiser removedAdvertiser = mAdvertisers.remove(socket);
+            if (removedAdvertiser != null
+                    && !interfaceDestroyed && mPendingRegistrations.size() > 0) {
+                mSharedLog.wtf(
+                        "unexpected onAdvertiserDestroyed() when there are pending registrations");
+            }
+
             if (mMdnsFeatureFlags.mIsMdnsOffloadFeatureEnabled && removedAdvertiser != null) {
                 final String interfaceName = removedAdvertiser.getSocketInterfaceName();
                 // If the interface is destroyed, stop all hardware offloading on that
@@ -418,10 +448,11 @@
         /**
          * Get the ID of a conflicting registration due to host, or -1 if none.
          *
-         * <p>It's valid that multiple registrations from the same user are using the same hostname.
-         *
          * <p>If there's already another registration with the same hostname requested by another
-         * user, this is considered a conflict.
+         * UID, this is a conflict.
+         *
+         * <p>If there're two registrations both containing address records using the same hostname,
+         * this is a conflict.
          */
         int getConflictingRegistrationDueToHost(@NonNull NsdServiceInfo info, int clientUid) {
             if (TextUtils.isEmpty(info.getHostname())) {
@@ -430,10 +461,17 @@
             for (int i = 0; i < mPendingRegistrations.size(); i++) {
                 final Registration otherRegistration = mPendingRegistrations.valueAt(i);
                 final NsdServiceInfo otherInfo = otherRegistration.getServiceInfo();
+                final int otherServiceId = mPendingRegistrations.keyAt(i);
                 if (clientUid != otherRegistration.mClientUid
                         && MdnsUtils.equalsIgnoreDnsCase(
                                 info.getHostname(), otherInfo.getHostname())) {
-                    return mPendingRegistrations.keyAt(i);
+                    return otherServiceId;
+                }
+                if (!info.getHostAddresses().isEmpty()
+                        && !otherInfo.getHostAddresses().isEmpty()
+                        && MdnsUtils.equalsIgnoreDnsCase(
+                                info.getHostname(), otherInfo.getHostname())) {
+                    return otherServiceId;
                 }
             }
             return -1;
@@ -528,7 +566,7 @@
         public void onInterfaceDestroyed(@NonNull SocketKey socketKey,
                 @NonNull MdnsInterfaceSocket socket) {
             final MdnsInterfaceAdvertiser advertiser = mAdvertisers.get(socket);
-            if (advertiser != null) advertiser.destroyNow();
+            if (advertiser != null) destroyAdvertiser(socket, true /* interfaceDestroyed */);
         }
 
         @Override
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java b/service-t/src/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java
index 21b7069..0ab7a76 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java
@@ -241,11 +241,30 @@
             }
         }
         // Request the network for discovery.
+        // This requests sockets on all networks even if the searchOptions have a given interface
+        // index (with getNetwork==null, for local interfaces), and only uses matching interfaces
+        // in that case. While this is a simple solution to only use matching sockets, a better
+        // practice would be to only request the correct socket for discovery.
+        // TODO: avoid requesting extra sockets after migrating P2P and tethering networks to local
+        // NetworkAgents.
         socketClient.notifyNetworkRequested(listener, searchOptions.getNetwork(),
                 new MdnsSocketClientBase.SocketCreationCallback() {
                     @Override
                     public void onSocketCreated(@NonNull SocketKey socketKey) {
                         discoveryExecutor.ensureRunningOnHandlerThread();
+                        final int searchInterfaceIndex = searchOptions.getInterfaceIndex();
+                        if (searchOptions.getNetwork() == null
+                                && searchInterfaceIndex > 0
+                                // The interface index in options should only match interfaces that
+                                // do not have any Network; a matching Network should be provided
+                                // otherwise.
+                                && (socketKey.getNetwork() != null
+                                    || socketKey.getInterfaceIndex() != searchInterfaceIndex)) {
+                            sharedLog.i("Skipping " + socketKey + " as ifIndex "
+                                    + searchInterfaceIndex + " was requested.");
+                            return;
+                        }
+
                         // All listeners of the same service types shares the same
                         // MdnsServiceTypeClient.
                         MdnsServiceTypeClient serviceTypeClient =
@@ -362,7 +381,7 @@
         return new MdnsServiceTypeClient(
                 serviceType, socketClient,
                 executorProvider.newServiceTypeClientSchedulerExecutor(), socketKey,
-                sharedLog.forSubComponent(tag), looper, serviceCache);
+                sharedLog.forSubComponent(tag), looper, serviceCache, mdnsFeatureFlags);
     }
 
     /**
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsFeatureFlags.java b/service-t/src/com/android/server/connectivity/mdns/MdnsFeatureFlags.java
index 56202fd..c264f25 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsFeatureFlags.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsFeatureFlags.java
@@ -62,6 +62,11 @@
      */
     public static final String NSD_AGGRESSIVE_QUERY_MODE = "nsd_aggressive_query_mode";
 
+    /**
+     * A feature flag to control whether the query with known-answer should be enabled.
+     */
+    public static final String NSD_QUERY_WITH_KNOWN_ANSWER = "nsd_query_with_known_answer";
+
     // Flag for offload feature
     public final boolean mIsMdnsOffloadFeatureEnabled;
 
@@ -83,6 +88,9 @@
     // Flag for aggressive query mode
     public final boolean mIsAggressiveQueryModeEnabled;
 
+    // Flag for query with known-answer
+    public final boolean mIsQueryWithKnownAnswerEnabled;
+
     @Nullable
     private final FlagOverrideProvider mOverrideProvider;
 
@@ -126,6 +134,14 @@
     }
 
     /**
+     * Indicates whether {@link #NSD_QUERY_WITH_KNOWN_ANSWER} is enabled, including for testing.
+     */
+    public boolean isQueryWithKnownAnswerEnabled() {
+        return mIsQueryWithKnownAnswerEnabled
+                || isForceEnabledForTest(NSD_QUERY_WITH_KNOWN_ANSWER);
+    }
+
+    /**
      * The constructor for {@link MdnsFeatureFlags}.
      */
     public MdnsFeatureFlags(boolean isOffloadFeatureEnabled,
@@ -135,6 +151,7 @@
             boolean isKnownAnswerSuppressionEnabled,
             boolean isUnicastReplyEnabled,
             boolean isAggressiveQueryModeEnabled,
+            boolean isQueryWithKnownAnswerEnabled,
             @Nullable FlagOverrideProvider overrideProvider) {
         mIsMdnsOffloadFeatureEnabled = isOffloadFeatureEnabled;
         mIncludeInetAddressRecordsInProbing = includeInetAddressRecordsInProbing;
@@ -143,6 +160,7 @@
         mIsKnownAnswerSuppressionEnabled = isKnownAnswerSuppressionEnabled;
         mIsUnicastReplyEnabled = isUnicastReplyEnabled;
         mIsAggressiveQueryModeEnabled = isAggressiveQueryModeEnabled;
+        mIsQueryWithKnownAnswerEnabled = isQueryWithKnownAnswerEnabled;
         mOverrideProvider = overrideProvider;
     }
 
@@ -162,6 +180,7 @@
         private boolean mIsKnownAnswerSuppressionEnabled;
         private boolean mIsUnicastReplyEnabled;
         private boolean mIsAggressiveQueryModeEnabled;
+        private boolean mIsQueryWithKnownAnswerEnabled;
         private FlagOverrideProvider mOverrideProvider;
 
         /**
@@ -170,11 +189,12 @@
         public Builder() {
             mIsMdnsOffloadFeatureEnabled = false;
             mIncludeInetAddressRecordsInProbing = false;
-            mIsExpiredServicesRemovalEnabled = false;
+            mIsExpiredServicesRemovalEnabled = true; // Default enabled.
             mIsLabelCountLimitEnabled = true; // Default enabled.
-            mIsKnownAnswerSuppressionEnabled = false;
-            mIsUnicastReplyEnabled = true;
+            mIsKnownAnswerSuppressionEnabled = true; // Default enabled.
+            mIsUnicastReplyEnabled = true; // Default enabled.
             mIsAggressiveQueryModeEnabled = false;
+            mIsQueryWithKnownAnswerEnabled = false;
             mOverrideProvider = null;
         }
 
@@ -261,6 +281,16 @@
         }
 
         /**
+         * Set whether the query with known-answer is enabled.
+         *
+         * @see #NSD_QUERY_WITH_KNOWN_ANSWER
+         */
+        public Builder setIsQueryWithKnownAnswerEnabled(boolean isQueryWithKnownAnswerEnabled) {
+            mIsQueryWithKnownAnswerEnabled = isQueryWithKnownAnswerEnabled;
+            return this;
+        }
+
+        /**
          * Builds a {@link MdnsFeatureFlags} with the arguments supplied to this builder.
          */
         public MdnsFeatureFlags build() {
@@ -271,6 +301,7 @@
                     mIsKnownAnswerSuppressionEnabled,
                     mIsUnicastReplyEnabled,
                     mIsAggressiveQueryModeEnabled,
+                    mIsQueryWithKnownAnswerEnabled,
                     mOverrideProvider);
         }
     }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiser.java b/service-t/src/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiser.java
index c2363c0..0b2003f 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiser.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiser.java
@@ -22,12 +22,10 @@
 import android.annotation.Nullable;
 import android.annotation.RequiresApi;
 import android.net.LinkAddress;
-import android.net.nsd.NsdManager;
 import android.net.nsd.NsdServiceInfo;
 import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
-import android.util.ArraySet;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.net.module.util.HexDump;
@@ -38,6 +36,7 @@
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -102,12 +101,15 @@
                 @NonNull MdnsInterfaceAdvertiser advertiser, int serviceId, int conflictType);
 
         /**
-         * Called by the advertiser when it destroyed itself.
+         * Called when all services on this interface advertiser has already been removed and exit
+         * announcements have been sent.
          *
-         * This can happen after a call to {@link #destroyNow()}, or after all services were
-         * unregistered and the advertiser finished sending exit announcements.
+         * <p>It's guaranteed that there are no service registrations in the
+         * MdnsInterfaceAdvertiser when this callback is invoked.
+         *
+         * <p>This is typically listened by the {@link MdnsAdvertiser} to release the resources
          */
-        void onDestroyed(@NonNull MdnsInterfaceSocket socket);
+        void onAllServicesRemoved(@NonNull MdnsInterfaceSocket socket);
     }
 
     /**
@@ -133,6 +135,15 @@
 
             mAnnouncer.startSending(info.getServiceId(), announcementInfo,
                     0L /* initialDelayMs */);
+
+            // Re-announce the services which have the same custom hostname.
+            final String hostname = mRecordRepository.getHostnameForServiceId(info.getServiceId());
+            if (hostname != null) {
+                final List<MdnsAnnouncer.AnnouncementInfo> announcementInfos =
+                        new ArrayList<>(mRecordRepository.restartAnnouncingForHostname(hostname));
+                announcementInfos.removeIf((i) -> i.getServiceId() == info.getServiceId());
+                reannounceServices(announcementInfos);
+            }
         }
     }
 
@@ -149,10 +160,11 @@
         public void onFinished(@NonNull BaseAnnouncementInfo info) {
             if (info instanceof MdnsAnnouncer.ExitAnnouncementInfo) {
                 mRecordRepository.removeService(info.getServiceId());
-
-                if (mRecordRepository.getServicesCount() == 0) {
-                    destroyNow();
-                }
+                mCbHandler.post(() -> {
+                    if (mRecordRepository.getServicesCount() == 0) {
+                        mCb.onAllServicesRemoved(mSocket);
+                    }
+                });
             }
         }
     }
@@ -234,8 +246,7 @@
      * Start the advertiser.
      *
      * The advertiser will stop itself when all services are removed and exit announcements sent,
-     * notifying via {@link Callback#onDestroyed}. This can also be triggered manually via
-     * {@link #destroyNow()}.
+     * notifying via {@link Callback#onAllServicesRemoved}.
      */
     public void start() {
         mSocket.addPacketHandler(this);
@@ -281,10 +292,11 @@
         if (!mRecordRepository.hasActiveService(id)) return;
         mProber.stop(id);
         mAnnouncer.stop(id);
+        final String hostname = mRecordRepository.getHostnameForServiceId(id);
         final MdnsAnnouncer.ExitAnnouncementInfo exitInfo = mRecordRepository.exitService(id);
         if (exitInfo != null) {
-            // This effectively schedules destroyNow(), as it is to be called when the exit
-            // announcement finishes if there is no service left.
+            // This effectively schedules onAllServicesRemoved(), as it is to be called when the
+            // exit announcement finishes if there is no service left.
             // A non-zero exit announcement delay follows legacy mdnsresponder behavior, and is
             // also useful to ensure that when a host receives the exit announcement, the service
             // has been unregistered on all interfaces; so an announcement sent from interface A
@@ -294,9 +306,22 @@
         } else {
             // No exit announcement necessary: remove the service immediately.
             mRecordRepository.removeService(id);
-            if (mRecordRepository.getServicesCount() == 0) {
-                destroyNow();
-            }
+            mCbHandler.post(() -> {
+                if (mRecordRepository.getServicesCount() == 0) {
+                    mCb.onAllServicesRemoved(mSocket);
+                }
+            });
+        }
+        // Re-probe/re-announce the services which have the same custom hostname. These services
+        // were probed/announced using host addresses which were just removed so they should be
+        // re-probed/re-announced without those addresses.
+        if (hostname != null) {
+            final List<MdnsProber.ProbingInfo> probingInfos =
+                    mRecordRepository.restartProbingForHostname(hostname);
+            reprobeServices(probingInfos);
+            final List<MdnsAnnouncer.AnnouncementInfo> announcementInfos =
+                    mRecordRepository.restartAnnouncingForHostname(hostname);
+            reannounceServices(announcementInfos);
         }
     }
 
@@ -330,7 +355,8 @@
     /**
      * Destroy the advertiser immediately, not sending any exit announcement.
      *
-     * <p>Useful when the underlying network went away. This will trigger an onDestroyed callback.
+     * <p>This is typically called when all services on the interface are removed or when the
+     * underlying network went away.
      */
     public void destroyNow() {
         for (int serviceId : mRecordRepository.clearServices()) {
@@ -339,7 +365,6 @@
         }
         mReplySender.cancelAll();
         mSocket.removePacketHandler(this);
-        mCbHandler.post(() -> mCb.onDestroyed(mSocket));
     }
 
     /**
@@ -442,4 +467,19 @@
             return new byte[0];
         }
     }
+
+    private void reprobeServices(List<MdnsProber.ProbingInfo> probingInfos) {
+        for (MdnsProber.ProbingInfo probingInfo : probingInfos) {
+            mProber.stop(probingInfo.getServiceId());
+            mProber.startProbing(probingInfo);
+        }
+    }
+
+    private void reannounceServices(List<MdnsAnnouncer.AnnouncementInfo> announcementInfos) {
+        for (MdnsAnnouncer.AnnouncementInfo announcementInfo : announcementInfos) {
+            mAnnouncer.stop(announcementInfo.getServiceId());
+            mAnnouncer.startSending(
+                    announcementInfo.getServiceId(), announcementInfo, 0 /* initialDelayMs */);
+        }
+    }
 }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsKeyRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsKeyRecord.java
new file mode 100644
index 0000000..ba8a56e
--- /dev/null
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsKeyRecord.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivity.mdns;
+
+import static com.android.net.module.util.HexDump.toHexString;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+
+import androidx.annotation.VisibleForTesting;
+
+import java.io.IOException;
+import java.util.Arrays;
+
+/** An mDNS "KEY" record, which contains a public key for a name. See RFC 2535. */
+@VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
+public class MdnsKeyRecord extends MdnsRecord {
+    @Nullable private byte[] rData;
+
+    public MdnsKeyRecord(@NonNull String[] name, @NonNull MdnsPacketReader reader)
+            throws IOException {
+        this(name, reader, false);
+    }
+
+    public MdnsKeyRecord(@NonNull String[] name, @NonNull MdnsPacketReader reader,
+            boolean isQuestion) throws IOException {
+        super(name, TYPE_KEY, reader, isQuestion);
+    }
+
+    public MdnsKeyRecord(@NonNull String[] name, boolean isUnicast) {
+        super(name, TYPE_KEY,
+                MdnsConstants.QCLASS_INTERNET | (isUnicast ? MdnsConstants.QCLASS_UNICAST : 0),
+                0L /* receiptTimeMillis */, false /* cacheFlush */, 0L /* ttlMillis */);
+    }
+
+    public MdnsKeyRecord(@NonNull String[] name, long receiptTimeMillis, boolean cacheFlush,
+            long ttlMillis, @Nullable byte[] rData) {
+        super(name, TYPE_KEY, MdnsConstants.QCLASS_INTERNET, receiptTimeMillis, cacheFlush,
+                ttlMillis);
+        if (rData != null) {
+            this.rData = Arrays.copyOf(rData, rData.length);
+        }
+    }
+    /** Returns the KEY RDATA in bytes **/
+    public byte[] getRData() {
+        if (rData == null) {
+            return null;
+        }
+        return Arrays.copyOf(rData, rData.length);
+    }
+
+    @Override
+    protected void readData(MdnsPacketReader reader) throws IOException {
+        rData = new byte[reader.getRemaining()];
+        reader.readBytes(rData);
+    }
+
+    @Override
+    protected void writeData(MdnsPacketWriter writer) throws IOException {
+        if (rData != null) {
+            writer.writeBytes(rData);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "KEY: " + toHexString(rData);
+    }
+
+    @Override
+    public int hashCode() {
+        return (super.hashCode() * 31) + Arrays.hashCode(rData);
+    }
+
+    @Override
+    public boolean equals(@Nullable Object other) {
+        if (this == other) {
+            return true;
+        }
+        if (!(other instanceof MdnsKeyRecord)) {
+            return false;
+        }
+
+        return super.equals(other) && Arrays.equals(rData, ((MdnsKeyRecord) other).rData);
+    }
+}
\ No newline at end of file
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
index 869ac9b..fcfb15f 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
@@ -27,6 +27,7 @@
 import android.os.Handler;
 import android.os.Looper;
 import android.util.ArrayMap;
+import android.util.Log;
 
 import com.android.net.module.util.SharedLog;
 
@@ -213,24 +214,30 @@
         return true;
     }
 
-    private void sendMdnsPacket(@NonNull DatagramPacket packet, @NonNull SocketKey targetSocketKey,
-            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+    private void sendMdnsPackets(@NonNull List<DatagramPacket> packets,
+            @NonNull SocketKey targetSocketKey, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         final MdnsInterfaceSocket socket = getTargetSocket(targetSocketKey);
         if (socket == null) {
             mSharedLog.e("No socket matches targetSocketKey=" + targetSocketKey);
             return;
         }
+        if (packets.isEmpty()) {
+            Log.wtf(TAG, "No mDns packets to send");
+            return;
+        }
 
-        final boolean isIpv6 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
-                instanceof Inet6Address;
-        final boolean isIpv4 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
-                instanceof Inet4Address;
+        final boolean isIpv6 = ((InetSocketAddress) packets.get(0).getSocketAddress())
+                .getAddress() instanceof Inet6Address;
+        final boolean isIpv4 = ((InetSocketAddress) packets.get(0).getSocketAddress())
+                .getAddress() instanceof Inet4Address;
         final boolean shouldQueryIpv6 = !onlyUseIpv6OnIpv6OnlyNetworks || !socket.hasJoinedIpv4();
         // Check ip capability and network before sending packet
         if ((isIpv6 && socket.hasJoinedIpv6() && shouldQueryIpv6)
                 || (isIpv4 && socket.hasJoinedIpv4())) {
             try {
-                socket.send(packet);
+                for (DatagramPacket packet : packets) {
+                    socket.send(packet);
+                }
             } catch (IOException e) {
                 mSharedLog.e("Failed to send a mDNS packet.", e);
             }
@@ -259,34 +266,34 @@
     }
 
     /**
-     * Send a mDNS request packet via given socket key that asks for multicast response.
+     * Send mDNS request packets via given socket key that asks for multicast response.
      */
-    public void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+    public void sendPacketRequestingMulticastResponse(@NonNull List<DatagramPacket> packets,
             @NonNull SocketKey socketKey, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
-        mHandler.post(() -> sendMdnsPacket(packet, socketKey, onlyUseIpv6OnIpv6OnlyNetworks));
+        mHandler.post(() -> sendMdnsPackets(packets, socketKey, onlyUseIpv6OnIpv6OnlyNetworks));
     }
 
     @Override
     public void sendPacketRequestingMulticastResponse(
-            @NonNull DatagramPacket packet, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+            @NonNull List<DatagramPacket> packets, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         throw new UnsupportedOperationException("This socket client need to specify the socket to"
                 + "send packet");
     }
 
     /**
-     * Send a mDNS request packet via given socket key that asks for unicast response.
+     * Send mDNS request packets via given socket key that asks for unicast response.
      *
      * <p>The socket client may use a null network to identify some or all interfaces, in which case
      * passing null sends the packet to these.
      */
-    public void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+    public void sendPacketRequestingUnicastResponse(@NonNull List<DatagramPacket> packets,
             @NonNull SocketKey socketKey, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
-        mHandler.post(() -> sendMdnsPacket(packet, socketKey, onlyUseIpv6OnIpv6OnlyNetworks));
+        mHandler.post(() -> sendMdnsPackets(packets, socketKey, onlyUseIpv6OnIpv6OnlyNetworks));
     }
 
     @Override
     public void sendPacketRequestingUnicastResponse(
-            @NonNull DatagramPacket packet, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+            @NonNull List<DatagramPacket> packets, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         throw new UnsupportedOperationException("This socket client need to specify the socket to"
                 + "send packet");
     }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsPacket.java b/service-t/src/com/android/server/connectivity/mdns/MdnsPacket.java
index 1fabd49..aef8211 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsPacket.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsPacket.java
@@ -42,7 +42,7 @@
     @NonNull
     public final List<MdnsRecord> additionalRecords;
 
-    MdnsPacket(int flags,
+    public MdnsPacket(int flags,
             @NonNull List<MdnsRecord> questions,
             @NonNull List<MdnsRecord> answers,
             @NonNull List<MdnsRecord> authorityRecords,
@@ -196,6 +196,15 @@
                 }
             }
 
+            case MdnsRecord.TYPE_KEY: {
+                try {
+                    return new MdnsKeyRecord(name, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_KEY_RDATA,
+                            "Failed to read KEY record from mDNS response.", e);
+                }
+            }
+
             case MdnsRecord.TYPE_NSEC: {
                 try {
                     return new MdnsNsecRecord(name, reader, isQuestion);
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsRecord.java b/service-t/src/com/android/server/connectivity/mdns/MdnsRecord.java
index 4b43989..b865319 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsRecord.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsRecord.java
@@ -23,7 +23,8 @@
 import android.os.SystemClock;
 import android.text.TextUtils;
 
-import com.android.internal.annotations.VisibleForTesting;
+import androidx.annotation.VisibleForTesting;
+
 import com.android.server.connectivity.mdns.util.MdnsUtils;
 
 import java.io.IOException;
@@ -40,6 +41,7 @@
     public static final int TYPE_PTR = 0x000C;
     public static final int TYPE_SRV = 0x0021;
     public static final int TYPE_TXT = 0x0010;
+    public static final int TYPE_KEY = 0x0019;
     public static final int TYPE_NSEC = 0x002f;
     public static final int TYPE_ANY = 0x00ff;
 
@@ -231,7 +233,7 @@
      * @param writer The writer to use.
      * @param now    The current system time. This is used when writing the updated TTL.
      */
-    @VisibleForTesting
+    @VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
     public final void write(MdnsPacketWriter writer, long now) throws IOException {
         writeHeaderFields(writer);
 
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsRecordRepository.java b/service-t/src/com/android/server/connectivity/mdns/MdnsRecordRepository.java
index ac64c3a..36f3982 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsRecordRepository.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsRecordRepository.java
@@ -34,6 +34,7 @@
 import android.util.ArrayMap;
 import android.util.ArraySet;
 import android.util.SparseArray;
+import android.util.SparseIntArray;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.net.module.util.CollectionUtils;
@@ -87,6 +88,12 @@
     private static final String[] DNS_SD_SERVICE_TYPE =
             new String[] { "_services", "_dns-sd", "_udp", LOCAL_TLD };
 
+    private enum RecordConflictType {
+        NO_CONFLICT,
+        CONFLICT,
+        IDENTICAL
+    }
+
     @NonNull
     private final Random mDelayGenerator = new Random();
     // Map of service unique ID -> records for service
@@ -97,6 +104,8 @@
     @NonNull
     private final Looper mLooper;
     @NonNull
+    private final Dependencies mDeps;
+    @NonNull
     private final String[] mDeviceHostname;
     @NonNull
     private final MdnsFeatureFlags mMdnsFeatureFlags;
@@ -111,6 +120,7 @@
             @NonNull String[] deviceHostname, @NonNull MdnsFeatureFlags mdnsFeatureFlags) {
         mDeviceHostname = deviceHostname;
         mLooper = looper;
+        mDeps = deps;
         mMdnsFeatureFlags = mdnsFeatureFlags;
     }
 
@@ -127,6 +137,10 @@
         public Enumeration<InetAddress> getInterfaceInetAddresses(@NonNull NetworkInterface iface) {
             return iface.getInetAddresses();
         }
+
+        public long elapsedRealTime() {
+            return SystemClock.elapsedRealtime();
+        }
     }
 
     private static class RecordInfo<T extends MdnsRecord> {
@@ -140,17 +154,25 @@
         public final boolean isSharedName;
 
         /**
-         * Last time (as per SystemClock.elapsedRealtime) when advertised via multicast, 0 if never
+         * Last time (as per SystemClock.elapsedRealtime) when advertised via multicast on IPv4, 0
+         * if never
          */
-        public long lastAdvertisedTimeMs;
+        public long lastAdvertisedOnIpv4TimeMs;
 
         /**
-         * Last time (as per SystemClock.elapsedRealtime) when sent via unicast or multicast,
-         * 0 if never
+         * Last time (as per SystemClock.elapsedRealtime) when advertised via multicast on IPv6, 0
+         * if never
          */
-        // FIXME: the `lastSentTimeMs` and `lastAdvertisedTimeMs` should be maintained separately
-        // for IPv4 and IPv6, because neither IPv4 nor and IPv6 clients can receive replies in
-        // different address space.
+        public long lastAdvertisedOnIpv6TimeMs;
+
+        /**
+         * Last time (as per SystemClock.elapsedRealtime) when sent via unicast or multicast, 0 if
+         * never.
+         *
+         * <p>Different from lastAdvertisedOnIpv(4|6)TimeMs, lastSentTimeMs is mainly used for
+         * tracking is a record is ever sent out, no matter unicast/multicast or IPv4/IPv6. It's
+         * unnecessary to maintain two versions (IPv4/IPv6) for it.
+         */
         public long lastSentTimeMs;
 
         RecordInfo(NsdServiceInfo serviceInfo, T record, boolean sharedName) {
@@ -169,6 +191,10 @@
         public final RecordInfo<MdnsServiceRecord> srvRecord;
         @Nullable
         public final RecordInfo<MdnsTextRecord> txtRecord;
+        @Nullable
+        public final RecordInfo<MdnsKeyRecord> serviceKeyRecord;
+        @Nullable
+        public final RecordInfo<MdnsKeyRecord> hostKeyRecord;
         @NonNull
         public final List<RecordInfo<MdnsInetAddressRecord>> addressRecords;
         @NonNull
@@ -230,7 +256,6 @@
                 nameRecordsTtlMillis = DEFAULT_NAME_RECORDS_TTL_MILLIS;
             }
 
-            final boolean hasService = !TextUtils.isEmpty(serviceInfo.getServiceType());
             final boolean hasCustomHost = !TextUtils.isEmpty(serviceInfo.getHostname());
             final String[] hostname =
                     hasCustomHost
@@ -238,9 +263,11 @@
                             : deviceHostname;
             final ArrayList<RecordInfo<?>> allRecords = new ArrayList<>(5);
 
-            if (hasService) {
-                final String[] serviceType = splitServiceType(serviceInfo);
-                final String[] serviceName = splitFullyQualifiedName(serviceInfo, serviceType);
+            final boolean hasService = !TextUtils.isEmpty(serviceInfo.getServiceType());
+            final String[] serviceType = hasService ? splitServiceType(serviceInfo) : null;
+            final String[] serviceName =
+                    hasService ? splitFullyQualifiedName(serviceInfo, serviceType) : null;
+            if (hasService && hasSrvRecord(serviceInfo)) {
                 // Service PTR records
                 ptrRecords = new ArrayList<>(serviceInfo.getSubtypes().size() + 1);
                 ptrRecords.add(new RecordInfo<>(
@@ -321,6 +348,36 @@
                 addressRecords = Collections.emptyList();
             }
 
+            final boolean hasKey = hasKeyRecord(serviceInfo);
+            if (hasKey && hasService) {
+                this.serviceKeyRecord = new RecordInfo<>(
+                        serviceInfo,
+                        new MdnsKeyRecord(
+                                serviceName,
+                                0L /*receiptTimeMillis */,
+                                true /* cacheFlush */,
+                                nameRecordsTtlMillis,
+                                serviceInfo.getPublicKey()),
+                        false /* sharedName */);
+                allRecords.add(this.serviceKeyRecord);
+            } else {
+                this.serviceKeyRecord = null;
+            }
+            if (hasKey && hasCustomHost) {
+                this.hostKeyRecord = new RecordInfo<>(
+                        serviceInfo,
+                        new MdnsKeyRecord(
+                                hostname,
+                                0L /*receiptTimeMillis */,
+                                true /* cacheFlush */,
+                                nameRecordsTtlMillis,
+                                serviceInfo.getPublicKey()),
+                        false /* sharedName */);
+                allRecords.add(this.hostKeyRecord);
+            } else {
+                this.hostKeyRecord = null;
+            }
+
             this.allRecords = Collections.unmodifiableList(allRecords);
             this.repliedServiceCount = repliedServiceCount;
             this.sentPacketCount = sentPacketCount;
@@ -471,6 +528,22 @@
                             ? inetAddressRecord.getInet6Address()
                             : inetAddressRecord.getInet4Address()));
         }
+
+        List<MdnsKeyRecord> keyRecords = new ArrayList<>();
+        if (registration.serviceKeyRecord != null) {
+            keyRecords.add(registration.serviceKeyRecord.record);
+        }
+        if (registration.hostKeyRecord != null) {
+            keyRecords.add(registration.hostKeyRecord.record);
+        }
+        for (MdnsKeyRecord keyRecord : keyRecords) {
+            probingRecords.add(new MdnsKeyRecord(
+                            keyRecord.getName(),
+                            0L /* receiptTimeMillis */,
+                            false /* cacheFlush */,
+                            keyRecord.getTtl(),
+                            keyRecord.getRData()));
+        }
         return new MdnsProber.ProbingInfo(serviceId, probingRecords);
     }
 
@@ -577,7 +650,8 @@
      */
     @Nullable
     public MdnsReplyInfo getReply(MdnsPacket packet, InetSocketAddress src) {
-        final long now = SystemClock.elapsedRealtime();
+        final long now = mDeps.elapsedRealTime();
+        final boolean isQuestionOnIpv4 = src.getAddress() instanceof Inet4Address;
 
         // TODO: b/322142420 - Set<RecordInfo<?>> may contain duplicate records wrapped in different
         // RecordInfo<?>s when custom host is enabled.
@@ -595,7 +669,7 @@
                     null /* serviceSrvRecord */, null /* serviceTxtRecord */,
                     null /* hostname */,
                     replyUnicastEnabled, now, answerInfo, additionalAnswerInfo,
-                    Collections.emptyList())) {
+                    Collections.emptyList(), isQuestionOnIpv4)) {
                 replyUnicast &= question.isUnicastReplyRequested();
             }
 
@@ -607,7 +681,7 @@
                         registration.srvRecord, registration.txtRecord,
                         registration.serviceInfo.getHostname(),
                         replyUnicastEnabled, now,
-                        answerInfo, additionalAnswerInfo, packet.answers)) {
+                        answerInfo, additionalAnswerInfo, packet.answers, isQuestionOnIpv4)) {
                     replyUnicast &= question.isUnicastReplyRequested();
                     registration.repliedServiceCount++;
                     registration.sentPacketCount++;
@@ -685,7 +759,7 @@
             // multicast responses. Unicast replies are faster as they do not need to wait for the
             // beacon interval on Wi-Fi.
             dest = src;
-        } else if (src.getAddress() instanceof Inet4Address) {
+        } else if (isQuestionOnIpv4) {
             dest = IPV4_SOCKET_ADDR;
         } else {
             dest = IPV6_SOCKET_ADDR;
@@ -697,7 +771,11 @@
             // TODO: consider actual packet send delay after response aggregation
             info.lastSentTimeMs = now + delayMs;
             if (!replyUnicast) {
-                info.lastAdvertisedTimeMs = info.lastSentTimeMs;
+                if (isQuestionOnIpv4) {
+                    info.lastAdvertisedOnIpv4TimeMs = info.lastSentTimeMs;
+                } else {
+                    info.lastAdvertisedOnIpv6TimeMs = info.lastSentTimeMs;
+                }
             }
             // Different RecordInfos may the contain the same record
             if (!answerRecords.contains(info.record)) {
@@ -729,7 +807,8 @@
             @Nullable String hostname,
             boolean replyUnicastEnabled, long now, @NonNull Set<RecordInfo<?>> answerInfo,
             @NonNull Set<RecordInfo<?>> additionalAnswerInfo,
-            @NonNull List<MdnsRecord> knownAnswerRecords) {
+            @NonNull List<MdnsRecord> knownAnswerRecords,
+            boolean isQuestionOnIpv4) {
         boolean hasDnsSdPtrRecordAnswer = false;
         boolean hasDnsSdSrvRecordAnswer = false;
         boolean hasFullyOwnedNameMatch = false;
@@ -778,10 +857,20 @@
 
             // TODO: responses to probe queries should bypass this check and only ensure the
             // reply is sent 250ms after the last sent time (RFC 6762 p.15)
-            if (!(replyUnicastEnabled && question.isUnicastReplyRequested())
-                    && info.lastAdvertisedTimeMs > 0L
-                    && now - info.lastAdvertisedTimeMs < MIN_MULTICAST_REPLY_INTERVAL_MS) {
-                continue;
+            if (!(replyUnicastEnabled && question.isUnicastReplyRequested())) {
+                if (isQuestionOnIpv4) { // IPv4
+                    if (info.lastAdvertisedOnIpv4TimeMs > 0L
+                            && now - info.lastAdvertisedOnIpv4TimeMs
+                                    < MIN_MULTICAST_REPLY_INTERVAL_MS) {
+                        continue;
+                    }
+                } else { // IPv6
+                    if (info.lastAdvertisedOnIpv6TimeMs > 0L
+                            && now - info.lastAdvertisedOnIpv6TimeMs
+                                    < MIN_MULTICAST_REPLY_INTERVAL_MS) {
+                        continue;
+                    }
+                }
             }
 
             answerInfo.add(info);
@@ -925,22 +1014,79 @@
         }
     }
 
+    @Nullable
+    public String getHostnameForServiceId(int id) {
+        ServiceRegistration registration = mServices.get(id);
+        if (registration == null) {
+            return null;
+        }
+        return registration.serviceInfo.getHostname();
+    }
+
+    /**
+     * Restart probing the services which are being probed and using the given custom hostname.
+     *
+     * @return The list of {@link MdnsProber.ProbingInfo} to be used by advertiser.
+     */
+    public List<MdnsProber.ProbingInfo> restartProbingForHostname(@NonNull String hostname) {
+        final ArrayList<MdnsProber.ProbingInfo> probingInfos = new ArrayList<>();
+        forEachActiveServiceRegistrationWithHostname(
+                hostname,
+                (id, registration) -> {
+                    if (!registration.isProbing) {
+                        return;
+                    }
+                    probingInfos.add(makeProbingInfo(id, registration));
+                });
+        return probingInfos;
+    }
+
+    /**
+     * Restart announcing the services which are using the given custom hostname.
+     *
+     * @return The list of {@link MdnsAnnouncer.AnnouncementInfo} to be used by advertiser.
+     */
+    public List<MdnsAnnouncer.AnnouncementInfo> restartAnnouncingForHostname(
+            @NonNull String hostname) {
+        final ArrayList<MdnsAnnouncer.AnnouncementInfo> announcementInfos = new ArrayList<>();
+        forEachActiveServiceRegistrationWithHostname(
+                hostname,
+                (id, registration) -> {
+                    if (registration.isProbing) {
+                        return;
+                    }
+                    announcementInfos.add(makeAnnouncementInfo(id, registration));
+                });
+        return announcementInfos;
+    }
+
     /**
      * Called to indicate that probing succeeded for a service.
+     *
      * @param probeSuccessInfo The successful probing info.
      * @return The {@link MdnsAnnouncer.AnnouncementInfo} to send, now that probing has succeeded.
      */
     public MdnsAnnouncer.AnnouncementInfo onProbingSucceeded(
-            MdnsProber.ProbingInfo probeSuccessInfo)
-            throws IOException {
-
-        int serviceId = probeSuccessInfo.getServiceId();
+            MdnsProber.ProbingInfo probeSuccessInfo) throws IOException {
+        final int serviceId = probeSuccessInfo.getServiceId();
         final ServiceRegistration registration = mServices.get(serviceId);
         if (registration == null) {
             throw new IOException("Service is not registered: " + serviceId);
         }
         registration.setProbing(false);
 
+        return makeAnnouncementInfo(serviceId, registration);
+    }
+
+    /**
+     * Make the announcement info of the given service ID.
+     *
+     * @param serviceId The service ID.
+     * @param registration The service registration.
+     * @return The {@link MdnsAnnouncer.AnnouncementInfo} of the given service ID.
+     */
+    private MdnsAnnouncer.AnnouncementInfo makeAnnouncementInfo(
+            int serviceId, ServiceRegistration registration) {
         final Set<MdnsRecord> answersSet = new LinkedHashSet<>();
         final ArrayList<MdnsRecord> additionalAnswers = new ArrayList<>();
 
@@ -972,8 +1118,8 @@
         addNsecRecordsForUniqueNames(additionalAnswers,
                 mGeneralRecords.iterator(), registration.allRecords.iterator());
 
-        return new MdnsAnnouncer.AnnouncementInfo(
-                probeSuccessInfo.getServiceId(), new ArrayList<>(answersSet), additionalAnswers);
+        return new MdnsAnnouncer.AnnouncementInfo(serviceId,
+                new ArrayList<>(answersSet), additionalAnswers);
     }
 
     /**
@@ -1013,18 +1159,15 @@
                 Collections.emptyList() /* additionalRecords */);
     }
 
-    /** Check if the record is in any service registration */
-    private boolean hasInetAddressRecord(@NonNull MdnsInetAddressRecord record) {
-        for (int i = 0; i < mServices.size(); i++) {
-            final ServiceRegistration registration = mServices.valueAt(i);
-            if (registration.exiting) continue;
-
-            for (RecordInfo<MdnsInetAddressRecord> localRecord : registration.addressRecords) {
-                if (Objects.equals(localRecord.record, record)) {
-                    return true;
-                }
+    /** Check if the record is in a registration */
+    private static boolean hasInetAddressRecord(
+            @NonNull ServiceRegistration registration, @NonNull MdnsInetAddressRecord record) {
+        for (RecordInfo<MdnsInetAddressRecord> localRecord : registration.addressRecords) {
+            if (Objects.equals(localRecord.record, record)) {
+                return true;
             }
         }
+
         return false;
     }
 
@@ -1036,99 +1179,125 @@
      * {@link MdnsInterfaceAdvertiser#CONFLICT_HOST}.
      */
     public Map<Integer, Integer> getConflictingServices(MdnsPacket packet) {
-        // Avoid allocating a new set for each incoming packet: use an empty set by default.
-        Map<Integer, Integer> conflicting = Collections.emptyMap();
+        Map<Integer, Integer> conflicting = new ArrayMap<>();
         for (MdnsRecord record : packet.answers) {
+            SparseIntArray conflictingWithRecord = new SparseIntArray();
             for (int i = 0; i < mServices.size(); i++) {
                 final ServiceRegistration registration = mServices.valueAt(i);
                 if (registration.exiting) continue;
 
-                int conflictType = 0;
+                final RecordConflictType conflictForService =
+                        conflictForService(record, registration);
+                final RecordConflictType conflictForHost = conflictForHost(record, registration);
 
-                if (conflictForService(record, registration)) {
-                    conflictType |= CONFLICT_SERVICE;
+                // Identical record is found in the repository so there won't be a conflict.
+                if (conflictForService == RecordConflictType.IDENTICAL
+                        || conflictForHost == RecordConflictType.IDENTICAL) {
+                    conflictingWithRecord.clear();
+                    break;
                 }
 
-                if (conflictForHost(record, registration)) {
+                int conflictType = 0;
+                if (conflictForService == RecordConflictType.CONFLICT) {
+                    conflictType |= CONFLICT_SERVICE;
+                }
+                if (conflictForHost == RecordConflictType.CONFLICT) {
                     conflictType |= CONFLICT_HOST;
                 }
 
                 if (conflictType != 0) {
-                    if (conflicting.isEmpty()) {
-                        // Conflict was found: use a mutable set
-                        conflicting = new ArrayMap<>();
-                    }
                     final int serviceId = mServices.keyAt(i);
-                    conflicting.put(serviceId, conflictType);
+                    conflictingWithRecord.put(serviceId, conflictType);
                 }
             }
+            for (int i = 0; i < conflictingWithRecord.size(); i++) {
+                final int serviceId = conflictingWithRecord.keyAt(i);
+                final int conflictType = conflictingWithRecord.valueAt(i);
+                final int oldConflictType = conflicting.getOrDefault(serviceId, 0);
+                conflicting.put(serviceId, oldConflictType | conflictType);
+            }
         }
 
         return conflicting;
     }
 
-
-    private static boolean conflictForService(
+    private static RecordConflictType conflictForService(
             @NonNull MdnsRecord record, @NonNull ServiceRegistration registration) {
-        if (registration.srvRecord == null) {
-            return false;
+        String[] fullServiceName;
+        if (registration.srvRecord != null) {
+            fullServiceName = registration.srvRecord.record.getName();
+        } else if (registration.serviceKeyRecord != null) {
+            fullServiceName = registration.serviceKeyRecord.record.getName();
+        } else {
+            return RecordConflictType.NO_CONFLICT;
         }
 
-        final RecordInfo<MdnsServiceRecord> srvRecord = registration.srvRecord;
-        if (!MdnsUtils.equalsDnsLabelIgnoreDnsCase(record.getName(), srvRecord.record.getName())) {
-            return false;
+        if (!MdnsUtils.equalsDnsLabelIgnoreDnsCase(record.getName(), fullServiceName)) {
+            return RecordConflictType.NO_CONFLICT;
         }
 
         // As per RFC6762 9., it's fine if the "conflict" is an identical record with same
         // data.
-        if (record instanceof MdnsServiceRecord) {
-            final MdnsServiceRecord local = srvRecord.record;
-            final MdnsServiceRecord other = (MdnsServiceRecord) record;
-            // Note "equals" does not consider TTL or receipt time, as intended here
-            if (Objects.equals(local, other)) {
-                return false;
-            }
+        if (record instanceof MdnsServiceRecord && equals(record, registration.srvRecord)) {
+            return RecordConflictType.IDENTICAL;
+        }
+        if (record instanceof MdnsTextRecord && equals(record, registration.txtRecord)) {
+            return RecordConflictType.IDENTICAL;
+        }
+        if (record instanceof MdnsKeyRecord && equals(record, registration.serviceKeyRecord)) {
+            return RecordConflictType.IDENTICAL;
         }
 
-        if (record instanceof MdnsTextRecord) {
-            final MdnsTextRecord local = registration.txtRecord.record;
-            final MdnsTextRecord other = (MdnsTextRecord) record;
-            if (Objects.equals(local, other)) {
-                return false;
-            }
-        }
-        return true;
+        return RecordConflictType.CONFLICT;
     }
 
-    private boolean conflictForHost(
+    private RecordConflictType conflictForHost(
             @NonNull MdnsRecord record, @NonNull ServiceRegistration registration) {
         // Only custom hosts are checked. When using the default host, the hostname is derived from
         // a UUID and it's supposed to be unique.
         if (registration.serviceInfo.getHostname() == null) {
-            return false;
+            return RecordConflictType.NO_CONFLICT;
+        }
+
+        // It cannot be a hostname conflict because no record is registered with the hostname.
+        if (registration.addressRecords.isEmpty() && registration.hostKeyRecord == null) {
+            return RecordConflictType.NO_CONFLICT;
         }
 
         // The record's name cannot be registered by NsdManager so it's not a conflict.
         if (record.getName().length != 2 || !record.getName()[1].equals(LOCAL_TLD)) {
-            return false;
+            return RecordConflictType.NO_CONFLICT;
         }
 
         // Different names. There won't be a conflict.
         if (!MdnsUtils.equalsIgnoreDnsCase(
                 record.getName()[0], registration.serviceInfo.getHostname())) {
-            return false;
+            return RecordConflictType.NO_CONFLICT;
         }
 
-        // If this registration has any address record and there's no identical record in the
-        // repository, it's a conflict. There will be no conflict if no registration has addresses
-        // for that hostname.
-        if (record instanceof MdnsInetAddressRecord) {
-            if (!registration.addressRecords.isEmpty()) {
-                return !hasInetAddressRecord((MdnsInetAddressRecord) record);
-            }
+        // As per RFC6762 9., it's fine if the "conflict" is an identical record with same
+        // data.
+        if (record instanceof MdnsInetAddressRecord
+                && hasInetAddressRecord(registration, (MdnsInetAddressRecord) record)) {
+            return RecordConflictType.IDENTICAL;
+        }
+        if (record instanceof MdnsKeyRecord && equals(record, registration.hostKeyRecord)) {
+            return RecordConflictType.IDENTICAL;
         }
 
-        return false;
+        // Per RFC 6762 8.1, when a record is being probed, any answer containing a record with that
+        // name, of any type, MUST be considered a conflicting response.
+        if (registration.isProbing) {
+            return RecordConflictType.CONFLICT;
+        }
+        if (record instanceof MdnsInetAddressRecord && !registration.addressRecords.isEmpty()) {
+            return RecordConflictType.CONFLICT;
+        }
+        if (record instanceof MdnsKeyRecord && registration.hostKeyRecord != null) {
+            return RecordConflictType.CONFLICT;
+        }
+
+        return RecordConflictType.NO_CONFLICT;
     }
 
     private List<RecordInfo<MdnsInetAddressRecord>> getInetAddressRecordsForHostname(
@@ -1245,10 +1414,11 @@
         final ServiceRegistration registration = mServices.get(serviceId);
         if (registration == null) return;
 
-        final long now = SystemClock.elapsedRealtime();
+        final long now = mDeps.elapsedRealTime();
         for (RecordInfo<?> record : registration.allRecords) {
             record.lastSentTimeMs = now;
-            record.lastAdvertisedTimeMs = now;
+            record.lastAdvertisedOnIpv4TimeMs = now;
+            record.lastAdvertisedOnIpv6TimeMs = now;
         }
         registration.sentPacketCount += sentPacketCount;
     }
@@ -1313,4 +1483,21 @@
 
         return type;
     }
+
+    /** Returns whether there will be an SRV record when registering the {@code info}. */
+    private static boolean hasSrvRecord(@NonNull NsdServiceInfo info) {
+        return info.getPort() > 0;
+    }
+
+    /** Returns whether there will be KEY record(s) when registering the {@code info}. */
+    private static boolean hasKeyRecord(@NonNull NsdServiceInfo info) {
+        return info.getPublicKey() != null;
+    }
+
+    private static boolean equals(@NonNull MdnsRecord record, @Nullable RecordInfo<?> recordInfo) {
+        if (recordInfo == null) {
+            return false;
+        }
+        return Objects.equals(record, recordInfo.record);
+    }
 }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java b/service-t/src/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java
index 73a7e3a..f509da2 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java
@@ -37,4 +37,5 @@
     public static final int ERROR_END_OF_FILE = 12;
     public static final int ERROR_READING_NSEC_RDATA = 13;
     public static final int ERROR_READING_ANY_RDATA = 14;
+    public static final int ERROR_READING_KEY_RDATA = 15;
 }
\ No newline at end of file
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
index 086094b..73405ab 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
@@ -59,6 +59,7 @@
                             source.readInt(),
                             source.readInt() == 1,
                             source.readParcelable(null),
+                            source.readInt(),
                             source.readString(),
                             source.readInt() == 1,
                             source.readInt());
@@ -79,6 +80,8 @@
     private final boolean removeExpiredService;
     // The target network for searching. Null network means search on all possible interfaces.
     @Nullable private final Network mNetwork;
+    // If the target interface does not have a Network, set to the interface index, otherwise unset.
+    private final int mInterfaceIndex;
 
     /** Parcelable constructs for a {@link MdnsSearchOptions}. */
     MdnsSearchOptions(
@@ -86,6 +89,7 @@
             int queryMode,
             boolean removeExpiredService,
             @Nullable Network network,
+            int interfaceIndex,
             @Nullable String resolveInstanceName,
             boolean onlyUseIpv6OnIpv6OnlyNetworks,
             int numOfQueriesBeforeBackoff) {
@@ -98,6 +102,7 @@
         this.numOfQueriesBeforeBackoff = numOfQueriesBeforeBackoff;
         this.removeExpiredService = removeExpiredService;
         mNetwork = network;
+        mInterfaceIndex = interfaceIndex;
         this.resolveInstanceName = resolveInstanceName;
     }
 
@@ -148,15 +153,27 @@
     }
 
     /**
-     * Returns the network which the mdns query should target on.
+     * Returns the network which the mdns query should target.
      *
-     * @return the target network or null if search on all possible interfaces.
+     * @return the target network or null to search on all possible interfaces.
      */
     @Nullable
     public Network getNetwork() {
         return mNetwork;
     }
 
+
+    /**
+     * Returns the interface index which the mdns query should target.
+     *
+     * This is only set when the service is to be searched on an interface that does not have a
+     * Network, in which case {@link #getNetwork()} returns null.
+     * The interface index as per {@link java.net.NetworkInterface#getIndex}, or 0 if unset.
+     */
+    public int getInterfaceIndex() {
+        return mInterfaceIndex;
+    }
+
     /**
      * If non-null, queries should try to resolve all records of this specific service, rather than
      * discovering all services.
@@ -177,6 +194,7 @@
         out.writeInt(queryMode);
         out.writeInt(removeExpiredService ? 1 : 0);
         out.writeParcelable(mNetwork, 0);
+        out.writeInt(mInterfaceIndex);
         out.writeString(resolveInstanceName);
         out.writeInt(onlyUseIpv6OnIpv6OnlyNetworks ? 1 : 0);
         out.writeInt(numOfQueriesBeforeBackoff);
@@ -190,6 +208,7 @@
         private int numOfQueriesBeforeBackoff = 3;
         private boolean removeExpiredService;
         private Network mNetwork;
+        private int mInterfaceIndex;
         private String resolveInstanceName;
 
         private Builder() {
@@ -278,6 +297,16 @@
             return this;
         }
 
+        /**
+         * Set the interface index to use for the query, if not querying on a {@link Network}.
+         *
+         * @see MdnsSearchOptions#getInterfaceIndex()
+         */
+        public Builder setInterfaceIndex(int index) {
+            mInterfaceIndex = index;
+            return this;
+        }
+
         /** Builds a {@link MdnsSearchOptions} with the arguments supplied to this builder. */
         public MdnsSearchOptions build() {
             return new MdnsSearchOptions(
@@ -285,6 +314,7 @@
                     queryMode,
                     removeExpiredService,
                     mNetwork,
+                    mInterfaceIndex,
                     resolveInstanceName,
                     onlyUseIpv6OnIpv6OnlyNetworks,
                     numOfQueriesBeforeBackoff);
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceInfo.java b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceInfo.java
index f60a95e..1ec9e39 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceInfo.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceInfo.java
@@ -94,57 +94,6 @@
     @NonNull
     private final Instant expirationTime;
 
-    /** Constructs a {@link MdnsServiceInfo} object with default values. */
-    public MdnsServiceInfo(
-            String serviceInstanceName,
-            String[] serviceType,
-            @Nullable List<String> subtypes,
-            String[] hostName,
-            int port,
-            @Nullable String ipv4Address,
-            @Nullable String ipv6Address,
-            @Nullable List<String> textStrings) {
-        this(
-                serviceInstanceName,
-                serviceType,
-                subtypes,
-                hostName,
-                port,
-                List.of(ipv4Address),
-                List.of(ipv6Address),
-                textStrings,
-                /* textEntries= */ null,
-                /* interfaceIndex= */ INTERFACE_INDEX_UNSPECIFIED,
-                /* network= */ null,
-                /* expirationTime= */ Instant.MAX);
-    }
-
-    /** Constructs a {@link MdnsServiceInfo} object with default values. */
-    public MdnsServiceInfo(
-            String serviceInstanceName,
-            String[] serviceType,
-            List<String> subtypes,
-            String[] hostName,
-            int port,
-            @Nullable String ipv4Address,
-            @Nullable String ipv6Address,
-            @Nullable List<String> textStrings,
-            @Nullable List<TextEntry> textEntries) {
-        this(
-                serviceInstanceName,
-                serviceType,
-                subtypes,
-                hostName,
-                port,
-                List.of(ipv4Address),
-                List.of(ipv6Address),
-                textStrings,
-                textEntries,
-                /* interfaceIndex= */ INTERFACE_INDEX_UNSPECIFIED,
-                /* network= */ null,
-                /* expirationTime= */ Instant.MAX);
-    }
-
     /**
      * Constructs a {@link MdnsServiceInfo} object with default values.
      *
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
index 8f41b94..b3bdbe0 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
@@ -30,14 +30,18 @@
 import android.util.ArrayMap;
 import android.util.Pair;
 
-import com.android.internal.annotations.VisibleForTesting;
+import androidx.annotation.VisibleForTesting;
+
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.SharedLog;
 import com.android.server.connectivity.mdns.util.MdnsUtils;
 
+import java.io.IOException;
 import java.io.PrintWriter;
+import java.net.DatagramPacket;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
+import java.net.InetSocketAddress;
 import java.time.Instant;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -55,7 +59,6 @@
 public class MdnsServiceTypeClient {
 
     private static final String TAG = MdnsServiceTypeClient.class.getSimpleName();
-    private static final int DEFAULT_MTU = 1500;
     @VisibleForTesting
     static final int EVENT_START_QUERYTASK = 1;
     static final int EVENT_QUERY_RESULT = 2;
@@ -84,6 +87,7 @@
                     notifyRemovedServiceToListeners(previousResponse, "Service record expired");
                 }
             };
+    @NonNull private final MdnsFeatureFlags featureFlags;
     private final ArrayMap<MdnsServiceBrowserListener, ListenerInfo> listeners =
             new ArrayMap<>();
     private final boolean removeServiceAfterTtlExpires =
@@ -142,7 +146,8 @@
                     // before sending the query, it needs to be called just before sending it.
                     final List<MdnsResponse> servicesToResolve = makeResponsesForResolve(socketKey);
                     final QueryTask queryTask = new QueryTask(taskArgs, servicesToResolve,
-                            getAllDiscoverySubtypes(), needSendDiscoveryQueries(listeners));
+                            getAllDiscoverySubtypes(), needSendDiscoveryQueries(listeners),
+                            getExistingServices());
                     executor.submit(queryTask);
                     break;
                 }
@@ -191,7 +196,7 @@
     /**
      * Dependencies of MdnsServiceTypeClient, for injection in tests.
      */
-    @VisibleForTesting
+    @VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE)
     public static class Dependencies {
         /**
          * @see Handler#sendMessageDelayed(Message, long)
@@ -221,6 +226,25 @@
         public void sendMessage(@NonNull Handler handler, @NonNull Message message) {
             handler.sendMessage(message);
         }
+
+        /**
+         * Generate the DatagramPackets from given MdnsPacket and InetSocketAddress.
+         *
+         * <p> If the query with known answer feature is enabled and the MdnsPacket is too large for
+         *     a single DatagramPacket, it will be split into multiple DatagramPackets.
+         */
+        public List<DatagramPacket> getDatagramPacketsFromMdnsPacket(
+                @NonNull byte[] packetCreationBuffer, @NonNull MdnsPacket packet,
+                @NonNull InetSocketAddress address, boolean isQueryWithKnownAnswer)
+                throws IOException {
+            if (isQueryWithKnownAnswer) {
+                return MdnsUtils.createQueryDatagramPackets(packetCreationBuffer, packet, address);
+            } else {
+                final byte[] queryBuffer =
+                        MdnsUtils.createRawDnsPacket(packetCreationBuffer, packet);
+                return List.of(new DatagramPacket(queryBuffer, 0, queryBuffer.length, address));
+            }
+        }
     }
 
     /**
@@ -236,9 +260,10 @@
             @NonNull SocketKey socketKey,
             @NonNull SharedLog sharedLog,
             @NonNull Looper looper,
-            @NonNull MdnsServiceCache serviceCache) {
+            @NonNull MdnsServiceCache serviceCache,
+            @NonNull MdnsFeatureFlags featureFlags) {
         this(serviceType, socketClient, executor, new Clock(), socketKey, sharedLog, looper,
-                new Dependencies(), serviceCache);
+                new Dependencies(), serviceCache, featureFlags);
     }
 
     @VisibleForTesting
@@ -251,7 +276,8 @@
             @NonNull SharedLog sharedLog,
             @NonNull Looper looper,
             @NonNull Dependencies dependencies,
-            @NonNull MdnsServiceCache serviceCache) {
+            @NonNull MdnsServiceCache serviceCache,
+            @NonNull MdnsFeatureFlags featureFlags) {
         this.serviceType = serviceType;
         this.socketClient = socketClient;
         this.executor = executor;
@@ -265,6 +291,7 @@
         this.serviceCache = serviceCache;
         this.mdnsQueryScheduler = new MdnsQueryScheduler();
         this.cacheKey = new MdnsServiceCache.CacheKey(serviceType, socketKey);
+        this.featureFlags = featureFlags;
     }
 
     /**
@@ -327,6 +354,11 @@
                 now.plusMillis(response.getMinRemainingTtl(now.toEpochMilli())));
     }
 
+    private List<MdnsResponse> getExistingServices() {
+        return featureFlags.isQueryWithKnownAnswerEnabled()
+                ? serviceCache.getCachedServices(cacheKey) : Collections.emptyList();
+    }
+
     /**
      * Registers {@code listener} for receiving discovery event of mDNS service instances, and
      * starts
@@ -391,7 +423,8 @@
             final QueryTask queryTask = new QueryTask(
                     mdnsQueryScheduler.scheduleFirstRun(taskConfig, now,
                             minRemainingTtl, currentSessionId), servicesToResolve,
-                    getAllDiscoverySubtypes(), needSendDiscoveryQueries(listeners));
+                    getAllDiscoverySubtypes(), needSendDiscoveryQueries(listeners),
+                    getExistingServices());
             executor.submit(queryTask);
         }
 
@@ -617,11 +650,6 @@
         return searchOptions != null && searchOptions.removeExpiredService();
     }
 
-    @VisibleForTesting
-    MdnsPacketWriter createMdnsPacketWriter() {
-        return new MdnsPacketWriter(DEFAULT_MTU);
-    }
-
     private List<MdnsResponse> makeResponsesForResolve(@NonNull SocketKey socketKey) {
         final List<MdnsResponse> resolveResponses = new ArrayList<>();
         for (int i = 0; i < listeners.size(); i++) {
@@ -694,14 +722,16 @@
         private final List<MdnsResponse> servicesToResolve = new ArrayList<>();
         private final List<String> subtypes = new ArrayList<>();
         private final boolean sendDiscoveryQueries;
+        private final List<MdnsResponse> existingServices = new ArrayList<>();
         QueryTask(@NonNull MdnsQueryScheduler.ScheduledQueryTaskArgs taskArgs,
                 @NonNull Collection<MdnsResponse> servicesToResolve,
-                @NonNull Collection<String> subtypes,
-                boolean sendDiscoveryQueries) {
+                @NonNull Collection<String> subtypes, boolean sendDiscoveryQueries,
+                @NonNull Collection<MdnsResponse> existingServices) {
             this.taskArgs = taskArgs;
             this.servicesToResolve.addAll(servicesToResolve);
             this.subtypes.addAll(subtypes);
             this.sendDiscoveryQueries = sendDiscoveryQueries;
+            this.existingServices.addAll(existingServices);
         }
 
         @Override
@@ -711,7 +741,6 @@
                 result =
                         new EnqueueMdnsQueryCallable(
                                 socketClient,
-                                createMdnsPacketWriter(),
                                 serviceType,
                                 subtypes,
                                 taskArgs.config.expectUnicastResponse,
@@ -721,7 +750,10 @@
                                 sendDiscoveryQueries,
                                 servicesToResolve,
                                 clock,
-                                sharedLog)
+                                sharedLog,
+                                dependencies,
+                                existingServices,
+                                featureFlags.isQueryWithKnownAnswerEnabled())
                                 .call();
             } catch (RuntimeException e) {
                 sharedLog.e(String.format("Failed to run EnqueueMdnsQueryCallable for subtype: %s",
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
index c51811b..653ea6c 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
@@ -58,7 +58,6 @@
     MdnsSocket(@NonNull MulticastNetworkInterfaceProvider multicastNetworkInterfaceProvider,
             MulticastSocket multicastSocket, SharedLog sharedLog) throws IOException {
         this.multicastNetworkInterfaceProvider = multicastNetworkInterfaceProvider;
-        this.multicastNetworkInterfaceProvider.startWatchingConnectivityChanges();
         this.multicastSocket = multicastSocket;
         this.sharedLog = sharedLog;
         // RFC Spec: https://tools.ietf.org/html/rfc6762
@@ -120,7 +119,6 @@
     public void close() {
         // This is a race with the use of the file descriptor (b/27403984).
         multicastSocket.close();
-        multicastNetworkInterfaceProvider.stopWatchingConnectivityChanges();
     }
 
     /**
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
index 82c8c5b..9cfcba1 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
@@ -25,6 +25,7 @@
 import android.net.wifi.WifiManager.MulticastLock;
 import android.os.SystemClock;
 import android.text.format.DateUtils;
+import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.net.module.util.SharedLog;
@@ -106,6 +107,7 @@
     @Nullable private Timer checkMulticastResponseTimer;
     private final SharedLog sharedLog;
     @NonNull private final MdnsFeatureFlags mdnsFeatureFlags;
+    private final MulticastNetworkInterfaceProvider interfaceProvider;
 
     public MdnsSocketClient(@NonNull Context context, @NonNull MulticastLock multicastLock,
             SharedLog sharedLog, @NonNull MdnsFeatureFlags mdnsFeatureFlags) {
@@ -118,6 +120,7 @@
             unicastReceiverBuffer = null;
         }
         this.mdnsFeatureFlags = mdnsFeatureFlags;
+        this.interfaceProvider = new MulticastNetworkInterfaceProvider(context, sharedLog);
     }
 
     @Override
@@ -138,6 +141,7 @@
         cannotReceiveMulticastResponse.set(false);
 
         shouldStopSocketLoop = false;
+        interfaceProvider.startWatchingConnectivityChanges();
         try {
             // TODO (changed when importing code): consider setting thread stats tag
             multicastSocket = createMdnsSocket(MdnsConstants.MDNS_PORT, sharedLog);
@@ -183,6 +187,7 @@
         }
 
         multicastLock.release();
+        interfaceProvider.stopWatchingConnectivityChanges();
 
         shouldStopSocketLoop = true;
         waitForSendThreadToStop();
@@ -202,18 +207,18 @@
     }
 
     @Override
-    public void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+    public void sendPacketRequestingMulticastResponse(@NonNull List<DatagramPacket> packets,
             boolean onlyUseIpv6OnIpv6OnlyNetworks) {
-        sendMdnsPacket(packet, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
+        sendMdnsPackets(packets, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
     }
 
     @Override
-    public void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+    public void sendPacketRequestingUnicastResponse(@NonNull List<DatagramPacket> packets,
             boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         if (useSeparateSocketForUnicast) {
-            sendMdnsPacket(packet, unicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
+            sendMdnsPackets(packets, unicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
         } else {
-            sendMdnsPacket(packet, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
+            sendMdnsPackets(packets, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
         }
     }
 
@@ -234,17 +239,21 @@
         return false;
     }
 
-    private void sendMdnsPacket(DatagramPacket packet, Queue<DatagramPacket> packetQueueToUse,
-            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+    private void sendMdnsPackets(List<DatagramPacket> packets,
+            Queue<DatagramPacket> packetQueueToUse, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         if (shouldStopSocketLoop && !MdnsConfigs.allowAddMdnsPacketAfterDiscoveryStops()) {
             sharedLog.w("sendMdnsPacket() is called after discovery already stopped");
             return;
         }
+        if (packets.isEmpty()) {
+            Log.wtf(TAG, "No mDns packets to send");
+            return;
+        }
 
-        final boolean isIpv4 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
-                instanceof Inet4Address;
-        final boolean isIpv6 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
-                instanceof Inet6Address;
+        final boolean isIpv4 = ((InetSocketAddress) packets.get(0).getSocketAddress())
+                .getAddress() instanceof Inet4Address;
+        final boolean isIpv6 = ((InetSocketAddress) packets.get(0).getSocketAddress())
+                .getAddress() instanceof Inet6Address;
         final boolean ipv6Only = multicastSocket != null && multicastSocket.isOnIPv6OnlyNetwork();
         if (isIpv4 && ipv6Only) {
             return;
@@ -254,10 +263,11 @@
         }
 
         synchronized (packetQueueToUse) {
-            while (packetQueueToUse.size() >= MdnsConfigs.mdnsPacketQueueMaxSize()) {
+            while ((packetQueueToUse.size() + packets.size())
+                    > MdnsConfigs.mdnsPacketQueueMaxSize()) {
                 packetQueueToUse.remove();
             }
-            packetQueueToUse.add(packet);
+            packetQueueToUse.addAll(packets);
         }
         triggerSendThread();
     }
@@ -482,8 +492,7 @@
 
     @VisibleForTesting
     MdnsSocket createMdnsSocket(int port, SharedLog sharedLog) throws IOException {
-        return new MdnsSocket(new MulticastNetworkInterfaceProvider(context, sharedLog), port,
-                sharedLog);
+        return new MdnsSocket(interfaceProvider, port, sharedLog);
     }
 
     private void sendPackets(List<DatagramPacket> packets, MdnsSocket socket) {
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
index b6000f0..b1a543a 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
@@ -23,6 +23,7 @@
 
 import java.io.IOException;
 import java.net.DatagramPacket;
+import java.util.List;
 
 /**
  * Base class for multicast socket client.
@@ -40,15 +41,15 @@
     void setCallback(@Nullable Callback callback);
 
     /**
-     * Send a mDNS request packet via given network that asks for multicast response.
+     * Send mDNS request packets via given network that asks for multicast response.
      */
-    void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+    void sendPacketRequestingMulticastResponse(@NonNull List<DatagramPacket> packets,
             boolean onlyUseIpv6OnIpv6OnlyNetworks);
 
     /**
-     * Send a mDNS request packet via given network that asks for unicast response.
+     * Send mDNS request packets via given network that asks for unicast response.
      */
-    void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+    void sendPacketRequestingUnicastResponse(@NonNull List<DatagramPacket> packets,
             boolean onlyUseIpv6OnIpv6OnlyNetworks);
 
     /*** Notify that the given network is requested for mdns discovery / resolution */
diff --git a/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java b/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
index d553210..3c11a24 100644
--- a/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
+++ b/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
@@ -16,6 +16,8 @@
 
 package com.android.server.connectivity.mdns.util;
 
+import static com.android.server.connectivity.mdns.MdnsConstants.FLAG_TRUNCATED;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.net.Network;
@@ -23,6 +25,7 @@
 import android.os.Handler;
 import android.os.SystemClock;
 import android.util.ArraySet;
+import android.util.Pair;
 
 import com.android.server.connectivity.mdns.MdnsConstants;
 import com.android.server.connectivity.mdns.MdnsPacket;
@@ -30,13 +33,18 @@
 import com.android.server.connectivity.mdns.MdnsRecord;
 
 import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.InetSocketAddress;
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
 import java.nio.charset.Charset;
 import java.nio.charset.CharsetEncoder;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
 /**
@@ -226,6 +234,100 @@
     }
 
     /**
+     * Writes the possible query content of an MdnsPacket into the data buffer.
+     *
+     * <p>This method is specifically for query packets. It writes the question and answer sections
+     *    into the data buffer only.
+     *
+     * @param packetCreationBuffer The data buffer for the query content.
+     * @param packet The MdnsPacket to be written into the data buffer.
+     * @return A Pair containing:
+     *         1. The remaining MdnsPacket data that could not fit in the buffer.
+     *         2. The length of the data written to the buffer.
+     */
+    @Nullable
+    private static Pair<MdnsPacket, Integer> writePossibleMdnsPacket(
+            @NonNull byte[] packetCreationBuffer, @NonNull MdnsPacket packet) throws IOException {
+        MdnsPacket remainingPacket;
+        final MdnsPacketWriter writer = new MdnsPacketWriter(packetCreationBuffer);
+        writer.writeUInt16(packet.transactionId); // Transaction ID
+
+        final int flagsPos = writer.getWritePosition();
+        writer.writeUInt16(0); // Flags, written later
+        writer.writeUInt16(0); // questions count, written later
+        writer.writeUInt16(0); // answers count, written later
+        writer.writeUInt16(0); // authority entries count, empty session for query
+        writer.writeUInt16(0); // additional records count, empty session for query
+
+        int writtenQuestions = 0;
+        int writtenAnswers = 0;
+        int lastValidPos = writer.getWritePosition();
+        try {
+            for (MdnsRecord record : packet.questions) {
+                // Questions do not have TTL or data
+                record.writeHeaderFields(writer);
+                writtenQuestions++;
+                lastValidPos = writer.getWritePosition();
+            }
+            for (MdnsRecord record : packet.answers) {
+                record.write(writer, 0L);
+                writtenAnswers++;
+                lastValidPos = writer.getWritePosition();
+            }
+            remainingPacket = null;
+        } catch (IOException e) {
+            // Went over the packet limit; truncate
+            if (writtenQuestions == 0 && writtenAnswers == 0) {
+                // No space to write even one record: just throw (as subclass of IOException)
+                throw e;
+            }
+
+            // Set the last valid position as the final position (not as a rewind)
+            writer.rewind(lastValidPos);
+            writer.clearRewind();
+
+            remainingPacket = new MdnsPacket(packet.flags,
+                    packet.questions.subList(
+                            writtenQuestions, packet.questions.size()),
+                    packet.answers.subList(
+                            writtenAnswers, packet.answers.size()),
+                    Collections.emptyList(), /* authorityRecords */
+                    Collections.emptyList() /* additionalRecords */);
+        }
+
+        final int len = writer.getWritePosition();
+        writer.rewind(flagsPos);
+        writer.writeUInt16(packet.flags | (remainingPacket == null ? 0 : FLAG_TRUNCATED));
+        writer.writeUInt16(writtenQuestions);
+        writer.writeUInt16(writtenAnswers);
+        writer.unrewind();
+
+        return Pair.create(remainingPacket, len);
+    }
+
+    /**
+     * Create Datagram packets from given MdnsPacket and InetSocketAddress.
+     *
+     * <p> If the MdnsPacket is too large for a single DatagramPacket, it will be split into
+     *     multiple DatagramPackets.
+     */
+    public static List<DatagramPacket> createQueryDatagramPackets(
+            @NonNull byte[] packetCreationBuffer, @NonNull MdnsPacket packet,
+            @NonNull InetSocketAddress destination) throws IOException {
+        final List<DatagramPacket> datagramPackets = new ArrayList<>();
+        MdnsPacket remainingPacket = packet;
+        while (remainingPacket != null) {
+            final Pair<MdnsPacket, Integer> result =
+                    writePossibleMdnsPacket(packetCreationBuffer, remainingPacket);
+            remainingPacket = result.first;
+            final int len = result.second;
+            final byte[] outBuffer = Arrays.copyOfRange(packetCreationBuffer, 0, len);
+            datagramPackets.add(new DatagramPacket(outBuffer, 0, outBuffer.length, destination));
+        }
+        return datagramPackets;
+    }
+
+    /**
      * Checks if the MdnsRecord needs to be renewed or not.
      *
      * <p>As per RFC6762 7.1 no need to query if remaining TTL is more than half the original one,
diff --git a/service-t/src/com/android/server/ethernet/EthernetInterfaceStateMachine.java b/service-t/src/com/android/server/ethernet/EthernetInterfaceStateMachine.java
new file mode 100644
index 0000000..b8f6859
--- /dev/null
+++ b/service-t/src/com/android/server/ethernet/EthernetInterfaceStateMachine.java
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.ethernet;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.content.Context;
+import android.net.NetworkCapabilities;
+import android.net.NetworkProvider;
+import android.net.NetworkProvider.NetworkOfferCallback;
+import android.net.NetworkRequest;
+import android.net.NetworkScore;
+import android.net.ip.IIpClient;
+import android.net.ip.IpClientCallbacks;
+import android.net.ip.IpClientManager;
+import android.os.ConditionVariable;
+import android.os.Handler;
+import android.os.Message;
+import android.util.ArraySet;
+import android.util.Log;
+
+import com.android.internal.util.State;
+import com.android.net.module.util.SyncStateMachine;
+import com.android.net.module.util.SyncStateMachine.StateInfo;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * EthernetInterfaceStateMachine manages the lifecycle of an ethernet-like network interface which
+ * includes managing a NetworkOffer, IpClient, and NetworkAgent as well as making the interface
+ * available as a tethering downstream.
+ *
+ * All methods exposed by this class *must* be called on the Handler thread provided in the
+ * constructor.
+ */
+class EthernetInterfaceStateMachine extends SyncStateMachine {
+    private static final String TAG = EthernetInterfaceStateMachine.class.getSimpleName();
+
+    private static final int CMD_ON_LINK_UP          = 1;
+    private static final int CMD_ON_LINK_DOWN        = 2;
+    private static final int CMD_ON_NETWORK_NEEDED   = 3;
+    private static final int CMD_ON_NETWORK_UNNEEDED = 4;
+    private static final int CMD_ON_IPCLIENT_CREATED = 5;
+
+    private class EthernetNetworkOfferCallback implements NetworkOfferCallback {
+        private final Set<Integer> mRequestIds = new ArraySet<>();
+
+        @Override
+        public void onNetworkNeeded(@NonNull NetworkRequest request) {
+            if (this != mNetworkOfferCallback) {
+                return;
+            }
+
+            mRequestIds.add(request.requestId);
+            if (mRequestIds.size() == 1) {
+                processMessage(CMD_ON_NETWORK_NEEDED);
+            }
+        }
+
+        @Override
+        public void onNetworkUnneeded(@NonNull NetworkRequest request) {
+            if (this != mNetworkOfferCallback) {
+                return;
+            }
+
+            if (!mRequestIds.remove(request.requestId)) {
+                // This can only happen if onNetworkNeeded was not called for a request or if
+                // the requestId changed. Both should *never* happen.
+                Log.wtf(TAG, "onNetworkUnneeded called for unknown request");
+            }
+            if (mRequestIds.isEmpty()) {
+                processMessage(CMD_ON_NETWORK_UNNEEDED);
+            }
+        }
+    }
+
+    private class EthernetIpClientCallback extends IpClientCallbacks {
+        private final ConditionVariable mOnQuitCv = new ConditionVariable(false);
+
+        private void safelyPostOnHandler(Runnable r) {
+            mHandler.post(() -> {
+                if (this != mIpClientCallback) {
+                    return;
+                }
+                r.run();
+            });
+        }
+
+        @Override
+        public void onIpClientCreated(IIpClient ipClient) {
+            safelyPostOnHandler(() -> {
+                // TODO: add a SyncStateMachine#processMessage(cmd, obj) overload.
+                processMessage(CMD_ON_IPCLIENT_CREATED, 0, 0,
+                        mDependencies.makeIpClientManager(ipClient));
+            });
+        }
+
+        public void waitOnQuit() {
+            if (!mOnQuitCv.block(5_000 /* timeoutMs */)) {
+                Log.wtf(TAG, "Timed out waiting on IpClient to shutdown.");
+            }
+        }
+
+        @Override
+        public void onQuit() {
+            mOnQuitCv.open();
+        }
+    }
+
+    private @Nullable EthernetNetworkOfferCallback mNetworkOfferCallback;
+    private @Nullable EthernetIpClientCallback mIpClientCallback;
+    private @Nullable IpClientManager mIpClient;
+    private final String mIface;
+    private final Handler mHandler;
+    private final Context mContext;
+    private final NetworkCapabilities mCapabilities;
+    private final NetworkProvider mNetworkProvider;
+    private final EthernetNetworkFactory.Dependencies mDependencies;
+    private boolean mLinkUp = false;
+
+    /** Interface is in tethering mode. */
+    private class TetheringState extends State {
+        @Override
+        public boolean processMessage(Message msg) {
+            switch (msg.what) {
+                case CMD_ON_LINK_UP:
+                case CMD_ON_LINK_DOWN:
+                    // TODO: think about what to do here.
+                    return HANDLED;
+            }
+            return NOT_HANDLED;
+        }
+    }
+
+    /** Link is down */
+    private class LinkDownState extends State {
+        @Override
+        public boolean processMessage(Message msg) {
+            switch (msg.what) {
+                case CMD_ON_LINK_UP:
+                    transitionTo(mStoppedState);
+                    return HANDLED;
+                case CMD_ON_LINK_DOWN:
+                    // do nothing, already in the correct state.
+                    return HANDLED;
+            }
+            return NOT_HANDLED;
+        }
+    }
+
+    /** Parent states of all states that do not cause a NetworkOffer to be extended. */
+    private class NetworkOfferExtendedState extends State {
+        @Override
+        public void enter() {
+            if (mNetworkOfferCallback != null) {
+                // This should never happen. If it happens anyway, log and move on.
+                Log.wtf(TAG, "Previous NetworkOffer was never retracted");
+            }
+
+            mNetworkOfferCallback = new EthernetNetworkOfferCallback();
+            final NetworkScore defaultScore = new NetworkScore.Builder().build();
+            mNetworkProvider.registerNetworkOffer(defaultScore,
+                    new NetworkCapabilities(mCapabilities), cmd -> mHandler.post(cmd),
+                    mNetworkOfferCallback);
+        }
+
+        @Override
+        public boolean processMessage(Message msg) {
+            switch (msg.what) {
+                case CMD_ON_LINK_UP:
+                    // do nothing, already in the correct state.
+                    return HANDLED;
+                case CMD_ON_LINK_DOWN:
+                    transitionTo(mLinkDownState);
+                    return HANDLED;
+            }
+            return NOT_HANDLED;
+        }
+
+        @Override
+        public void exit() {
+            mNetworkProvider.unregisterNetworkOffer(mNetworkOfferCallback);
+            mNetworkOfferCallback = null;
+        }
+    }
+
+    /**
+     * Offer is extended but has not been requested.
+     *
+     * StoppedState's sole purpose is to react to a CMD_ON_NETWORK_NEEDED and transition to
+     * StartedState when that happens. Note that StoppedState could be rolled into
+     * NetworkOfferExtendedState. However, keeping the states separate provides some additional
+     * protection by logging a Log.wtf if a CMD_ON_NETWORK_NEEDED is received in an unexpected state
+     * (i.e. StartedState or RunningState). StoppedState is a child of NetworkOfferExtendedState.
+     */
+    private class StoppedState extends State {
+        @Override
+        public boolean processMessage(Message msg) {
+            switch (msg.what) {
+                case CMD_ON_NETWORK_NEEDED:
+                    transitionTo(mStartedState);
+                    return HANDLED;
+            }
+            return NOT_HANDLED;
+        }
+    }
+
+    /** Network is needed, starts IpClient and manages its lifecycle */
+    private class StartedState extends State {
+        @Override
+        public void enter() {
+            mIpClientCallback = new EthernetIpClientCallback();
+            mDependencies.makeIpClient(mContext, mIface, mIpClientCallback);
+        }
+
+        @Override
+        public boolean processMessage(Message msg) {
+            switch (msg.what) {
+                case CMD_ON_NETWORK_UNNEEDED:
+                    transitionTo(mStoppedState);
+                    return HANDLED;
+                case CMD_ON_IPCLIENT_CREATED:
+                    mIpClient = (IpClientManager) msg.obj;
+                    transitionTo(mRunningState);
+                    return HANDLED;
+            }
+            return NOT_HANDLED;
+        }
+
+        @Override
+        public void exit() {
+            if (mIpClient != null) {
+                mIpClient.shutdown();
+                // TODO: consider adding a StoppingState and making the shutdown operation
+                // asynchronous.
+                mIpClientCallback.waitOnQuit();
+            }
+            mIpClientCallback = null;
+        }
+    }
+
+    /** IpClient is running, starts provisioning and registers NetworkAgent */
+    private class RunningState extends State {
+
+    }
+
+    private final TetheringState mTetheringState = new TetheringState();
+    private final LinkDownState mLinkDownState = new LinkDownState();
+    private final NetworkOfferExtendedState mOfferExtendedState = new NetworkOfferExtendedState();
+    private final StoppedState mStoppedState = new StoppedState();
+    private final StartedState mStartedState = new StartedState();
+    private final RunningState mRunningState = new RunningState();
+
+    public EthernetInterfaceStateMachine(String iface, Handler handler, Context context,
+            NetworkCapabilities capabilities, NetworkProvider provider,
+            EthernetNetworkFactory.Dependencies deps) {
+        super(TAG + "." + iface, handler.getLooper().getThread());
+
+        mIface = iface;
+        mHandler = handler;
+        mContext = context;
+        mCapabilities = capabilities;
+        mNetworkProvider = provider;
+        mDependencies = deps;
+
+        // Interface lifecycle:
+        //           [ LinkDownState ]
+        //                   |
+        //                   v
+        //             *link comes up*
+        //                   |
+        //                   v
+        //            [ StoppedState ]
+        //                   |
+        //                   v
+        //           *network is needed*
+        //                   |
+        //                   v
+        //            [ StartedState ]
+        //                   |
+        //                   v
+        //           *IpClient is created*
+        //                   |
+        //                   v
+        //            [ RunningState ]
+        //                   |
+        //                   v
+        //  *interface is requested for tethering*
+        //                   |
+        //                   v
+        //            [TetheringState]
+        //
+        // Tethering mode is special as the interface is configured by Tethering, rather than the
+        // ethernet module.
+        final List<StateInfo> states = new ArrayList<>();
+        states.add(new StateInfo(mTetheringState, null));
+
+        // CHECKSTYLE:OFF IndentationCheck
+        // Initial state
+        states.add(new StateInfo(mLinkDownState, null));
+        states.add(new StateInfo(mOfferExtendedState, null));
+            states.add(new StateInfo(mStoppedState, mOfferExtendedState));
+            states.add(new StateInfo(mStartedState, mOfferExtendedState));
+                states.add(new StateInfo(mRunningState, mStartedState));
+        // CHECKSTYLE:ON IndentationCheck
+        addAllStates(states);
+
+        // TODO: set initial state to TetheringState if a tethering interface has been requested and
+        // this is the first interface to be added.
+        start(mLinkDownState);
+    }
+
+    public boolean updateLinkState(boolean up) {
+        if (mLinkUp == up) {
+            return false;
+        }
+
+        // TODO: consider setting mLinkUp as part of processMessage().
+        mLinkUp = up;
+        if (!up) { // was up, goes down
+            processMessage(CMD_ON_LINK_DOWN);
+        } else { // was down, comes up
+            processMessage(CMD_ON_LINK_UP);
+        }
+
+        return true;
+    }
+}
diff --git a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
index 0b54fdd..cadc04d 100644
--- a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
+++ b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
@@ -250,6 +250,17 @@
         return mTrackingInterfaces.containsKey(ifaceName);
     }
 
+    @VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE)
+    @Nullable
+    protected String getHwAddress(@NonNull final String ifaceName) {
+        if (!hasInterface(ifaceName)) {
+            return null;
+        }
+
+        NetworkInterfaceState iface = mTrackingInterfaces.get(ifaceName);
+        return iface.mHwAddress;
+    }
+
     @VisibleForTesting
     static class NetworkInterfaceState {
         final String name;
diff --git a/service-t/src/com/android/server/ethernet/EthernetTracker.java b/service-t/src/com/android/server/ethernet/EthernetTracker.java
index 458d64f..71f289e 100644
--- a/service-t/src/com/android/server/ethernet/EthernetTracker.java
+++ b/service-t/src/com/android/server/ethernet/EthernetTracker.java
@@ -131,6 +131,10 @@
     // returned when a tethered interface is requested; until then, it remains in client mode. Its
     // current mode is reflected in mTetheringInterfaceMode.
     private String mTetheringInterface;
+    // If the tethering interface is in server mode, it is not tracked by factory. The HW address
+    // must be maintained by the EthernetTracker. Its current mode is reflected in
+    // mTetheringInterfaceMode.
+    private String mTetheringInterfaceHwAddr;
     private int mTetheringInterfaceMode = INTERFACE_MODE_CLIENT;
     // Tracks whether clients were notified that the tethered interface is available
     private boolean mTetheredInterfaceWasAvailable = false;
@@ -382,10 +386,9 @@
         });
     }
 
-    @VisibleForTesting(visibility = PACKAGE)
-    protected void setInterfaceEnabled(@NonNull final String iface, boolean enabled,
-            @Nullable final EthernetCallback cb) {
-        mHandler.post(() -> updateInterfaceState(iface, enabled, cb));
+    /** Configure the administrative state of ethernet interface by toggling IFF_UP. */
+    public void setInterfaceEnabled(String iface, boolean enabled, EthernetCallback cb) {
+        mHandler.post(() -> setInterfaceAdministrativeState(iface, enabled, cb));
     }
 
     IpConfiguration getIpConfiguration(String iface) {
@@ -461,7 +464,7 @@
             if (!include) {
                 removeTestData();
             }
-            mHandler.post(() -> trackAvailableInterfaces());
+            trackAvailableInterfaces();
         });
     }
 
@@ -583,6 +586,7 @@
         removeInterface(iface);
         if (iface.equals(mTetheringInterface)) {
             mTetheringInterface = null;
+            mTetheringInterfaceHwAddr = null;
         }
         broadcastInterfaceStateChange(iface);
     }
@@ -611,13 +615,14 @@
             return;
         }
 
+        final String hwAddress = config.hwAddr;
+
         if (getInterfaceMode(iface) == INTERFACE_MODE_SERVER) {
             maybeUpdateServerModeInterfaceState(iface, true);
+            mTetheringInterfaceHwAddr = hwAddress;
             return;
         }
 
-        final String hwAddress = config.hwAddr;
-
         NetworkCapabilities nc = mNetworkCapabilities.get(iface);
         if (nc == null) {
             // Try to resolve using mac address
@@ -643,25 +648,40 @@
         }
     }
 
-    private void updateInterfaceState(String iface, boolean up) {
-        updateInterfaceState(iface, up, new EthernetCallback(null /* cb */));
-    }
-
-    // TODO(b/225315248): enable/disableInterface() should not affect link state.
-    private void updateInterfaceState(String iface, boolean up, EthernetCallback cb) {
-        final int mode = getInterfaceMode(iface);
-        if (mode == INTERFACE_MODE_SERVER || !mFactory.hasInterface(iface)) {
-            // The interface is in server mode or is not tracked.
-            cb.onError("Failed to set link state " + (up ? "up" : "down") + " for " + iface);
+    private void setInterfaceAdministrativeState(String iface, boolean up, EthernetCallback cb) {
+        if (getInterfaceState(iface) == EthernetManager.STATE_ABSENT) {
+            cb.onError("Failed to enable/disable absent interface: " + iface);
+            return;
+        }
+        if (getInterfaceRole(iface) == EthernetManager.ROLE_SERVER) {
+            // TODO: support setEthernetState for server mode interfaces.
+            cb.onError("Failed to enable/disable interface in server mode: " + iface);
             return;
         }
 
+        if (up) {
+            // WARNING! setInterfaceUp() clears the IPv4 address and readds it. Calling
+            // enableInterface() on an active interface can lead to a provisioning failure which
+            // will cause IpClient to be restarted.
+            // TODO: use netlink directly rather than calling into netd.
+            NetdUtils.setInterfaceUp(mNetd, iface);
+        } else {
+            NetdUtils.setInterfaceDown(mNetd, iface);
+        }
+        cb.onResult(iface);
+    }
+
+    private void updateInterfaceState(String iface, boolean up) {
+        final int mode = getInterfaceMode(iface);
+        if (mode == INTERFACE_MODE_SERVER) {
+            // TODO: support tracking link state for interfaces in server mode.
+            return;
+        }
+
+        // If updateInterfaceLinkState returns false, the interface is already in the correct state.
         if (mFactory.updateInterfaceLinkState(iface, up)) {
             broadcastInterfaceStateChange(iface);
         }
-        // If updateInterfaceLinkState returns false, the interface is already in the correct state.
-        // Always return success.
-        cb.onResult(iface);
     }
 
     private void maybeUpdateServerModeInterfaceState(String iface, boolean available) {
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index f7f133c..114cf2e 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -16,6 +16,7 @@
 
 package com.android.server.net;
 
+import static android.Manifest.permission.NETWORK_SETTINGS;
 import static android.Manifest.permission.NETWORK_STATS_PROVIDER;
 import static android.Manifest.permission.READ_NETWORK_USAGE_HISTORY;
 import static android.Manifest.permission.UPDATE_DEVICE_STATS;
@@ -50,12 +51,18 @@
 import static android.net.NetworkTemplate.MATCH_WIFI;
 import static android.net.TrafficStats.KB_IN_BYTES;
 import static android.net.TrafficStats.MB_IN_BYTES;
+import static android.net.TrafficStats.TYPE_RX_BYTES;
+import static android.net.TrafficStats.TYPE_RX_PACKETS;
+import static android.net.TrafficStats.TYPE_TX_BYTES;
+import static android.net.TrafficStats.TYPE_TX_PACKETS;
 import static android.net.TrafficStats.UID_TETHERING;
 import static android.net.TrafficStats.UNSUPPORTED;
+import static android.net.connectivity.ConnectivityCompatChanges.ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID_TAG;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_XT;
 import static android.os.Trace.TRACE_TAG_NETWORK;
+import static android.provider.DeviceConfig.NAMESPACE_TETHERING;
 import static android.system.OsConstants.ENOENT;
 import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
 import static android.text.format.DateUtils.DAY_IN_MILLIS;
@@ -64,6 +71,7 @@
 import static android.text.format.DateUtils.SECOND_IN_MILLIS;
 
 import static com.android.internal.annotations.VisibleForTesting.Visibility.PRIVATE;
+import static com.android.net.module.util.DeviceConfigUtils.getDeviceConfigPropertyInt;
 import static com.android.net.module.util.NetworkCapabilitiesUtils.getDisplayTransport;
 import static com.android.net.module.util.NetworkStatsUtils.LIMIT_GLOBAL_ALERT;
 import static com.android.server.net.NetworkStatsEventLogger.POLL_REASON_PERIODIC;
@@ -84,6 +92,7 @@
 import android.app.AlarmManager;
 import android.app.BroadcastOptions;
 import android.app.PendingIntent;
+import android.app.compat.CompatChanges;
 import android.app.usage.NetworkStatsManager;
 import android.content.ApexEnvironment;
 import android.content.BroadcastReceiver;
@@ -299,6 +308,12 @@
     static final String NETSTATS_FASTDATAINPUT_SUCCESSES_COUNTER_NAME = "fastdatainput.successes";
     static final String NETSTATS_FASTDATAINPUT_FALLBACKS_COUNTER_NAME = "fastdatainput.fallbacks";
 
+    static final String TRAFFIC_STATS_CACHE_EXPIRY_DURATION_NAME =
+            "trafficstats_cache_expiry_duration_ms";
+    static final String TRAFFIC_STATS_CACHE_MAX_ENTRIES_NAME = "trafficstats_cache_max_entries";
+    static final int DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS = 1000;
+    static final int DEFAULT_TRAFFIC_STATS_CACHE_MAX_ENTRIES = 400;
+
     private final Context mContext;
     private final NetworkStatsFactory mStatsFactory;
     private final AlarmManager mAlarmManager;
@@ -454,6 +469,15 @@
 
     private long mLastStatsSessionPoll;
 
+    private final TrafficStatsRateLimitCache mTrafficStatsTotalCache;
+    private final TrafficStatsRateLimitCache mTrafficStatsIfaceCache;
+    private final TrafficStatsRateLimitCache mTrafficStatsUidCache;
+    static final String TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG =
+            "trafficstats_rate_limit_cache_enabled_flag";
+    private final boolean mAlwaysUseTrafficStatsRateLimitCache;
+    private final int mTrafficStatsRateLimitCacheExpiryDuration;
+    private final int mTrafficStatsRateLimitCacheMaxEntries;
+
     private final Object mOpenSessionCallsLock = new Object();
 
     /**
@@ -643,6 +667,19 @@
             mEventLogger = null;
         }
 
+        mAlwaysUseTrafficStatsRateLimitCache =
+                mDeps.alwaysUseTrafficStatsRateLimitCache(mContext);
+        mTrafficStatsRateLimitCacheExpiryDuration =
+                mDeps.getTrafficStatsRateLimitCacheExpiryDuration();
+        mTrafficStatsRateLimitCacheMaxEntries =
+                mDeps.getTrafficStatsRateLimitCacheMaxEntries();
+        mTrafficStatsTotalCache = new TrafficStatsRateLimitCache(mClock,
+                mTrafficStatsRateLimitCacheExpiryDuration, mTrafficStatsRateLimitCacheMaxEntries);
+        mTrafficStatsIfaceCache = new TrafficStatsRateLimitCache(mClock,
+                mTrafficStatsRateLimitCacheExpiryDuration, mTrafficStatsRateLimitCacheMaxEntries);
+        mTrafficStatsUidCache = new TrafficStatsRateLimitCache(mClock,
+                mTrafficStatsRateLimitCacheExpiryDuration, mTrafficStatsRateLimitCacheMaxEntries);
+
         // TODO: Remove bpfNetMaps creation and always start SkDestroyListener
         // Following code is for the experiment to verify the SkDestroyListener refactoring. Based
         // on the experiment flag, BpfNetMaps starts C SkDestroyListener (existing code) or
@@ -696,7 +733,7 @@
          * Get the count of import legacy target attempts.
          */
         public int getImportLegacyTargetAttempts() {
-            return DeviceConfigUtils.getDeviceConfigPropertyInt(
+            return getDeviceConfigPropertyInt(
                     DeviceConfig.NAMESPACE_TETHERING,
                     NETSTATS_IMPORT_LEGACY_TARGET_ATTEMPTS,
                     DEFAULT_NETSTATS_IMPORT_LEGACY_TARGET_ATTEMPTS);
@@ -706,7 +743,7 @@
          * Get the count of using FastDataInput target attempts.
          */
         public int getUseFastDataInputTargetAttempts() {
-            return DeviceConfigUtils.getDeviceConfigPropertyInt(
+            return getDeviceConfigPropertyInt(
                     DeviceConfig.NAMESPACE_TETHERING,
                     NETSTATS_FASTDATAINPUT_TARGET_ATTEMPTS, 0);
         }
@@ -888,6 +925,83 @@
             return DeviceConfigUtils.isTetheringFeatureNotChickenedOut(
                     ctx, CONFIG_ENABLE_NETWORK_STATS_EVENT_LOGGER);
         }
+
+        /**
+         * Get whether TrafficStats rate-limit cache is always applied.
+         *
+         * This method should only be called once in the constructor,
+         * to ensure that the code does not need to deal with flag values changing at runtime.
+         */
+        public boolean alwaysUseTrafficStatsRateLimitCache(@NonNull Context ctx) {
+            return SdkLevel.isAtLeastV() && DeviceConfigUtils.isTetheringFeatureNotChickenedOut(
+                    ctx, TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG);
+        }
+
+        /**
+         * Get TrafficStats rate-limit cache expiry.
+         *
+         * This method should only be called once in the constructor,
+         * to ensure that the code does not need to deal with flag values changing at runtime.
+         */
+        public int getTrafficStatsRateLimitCacheExpiryDuration() {
+            return getDeviceConfigPropertyInt(
+                    NAMESPACE_TETHERING, TRAFFIC_STATS_CACHE_EXPIRY_DURATION_NAME,
+                    DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS);
+        }
+
+        /**
+         * Get TrafficStats rate-limit cache max entries.
+         *
+         * This method should only be called once in the constructor,
+         * to ensure that the code does not need to deal with flag values changing at runtime.
+         */
+        public int getTrafficStatsRateLimitCacheMaxEntries() {
+            return getDeviceConfigPropertyInt(
+                    NAMESPACE_TETHERING, TRAFFIC_STATS_CACHE_MAX_ENTRIES_NAME,
+                    DEFAULT_TRAFFIC_STATS_CACHE_MAX_ENTRIES);
+        }
+
+        /**
+         * Wrapper method for {@link CompatChanges#isChangeEnabled(long, int)}
+         */
+        public boolean isChangeEnabled(final long changeId, final int uid) {
+            return CompatChanges.isChangeEnabled(changeId, uid);
+        }
+
+        /**
+         * Retrieves native network total statistics.
+         *
+         * @return A NetworkStats.Entry containing the native statistics, or
+         *         null if an error occurs.
+         */
+        @Nullable
+        public NetworkStats.Entry nativeGetTotalStat() {
+            return NetworkStatsService.nativeGetTotalStat();
+        }
+
+        /**
+         * Retrieves native network interface statistics for the specified interface.
+         *
+         * @param iface The name of the network interface to query.
+         * @return A NetworkStats.Entry containing the native statistics for the interface, or
+         *         null if an error occurs.
+         */
+        @Nullable
+        public NetworkStats.Entry nativeGetIfaceStat(String iface) {
+            return NetworkStatsService.nativeGetIfaceStat(iface);
+        }
+
+        /**
+         * Retrieves native network uid statistics for the specified uid.
+         *
+         * @param uid The uid of the application to query.
+         * @return A NetworkStats.Entry containing the native statistics for the uid, or
+         *         null if an error occurs.
+         */
+        @Nullable
+        public NetworkStats.Entry nativeGetUidStat(int uid) {
+            return NetworkStatsService.nativeGetUidStat(uid);
+        }
     }
 
     /**
@@ -1783,6 +1897,8 @@
             if (transport == TRANSPORT_WIFI) {
                 ifaceSet = mAllWifiIfacesSinceBoot;
             } else if (transport == TRANSPORT_CELLULAR) {
+                // Since satellite networks appear under type mobile, this includes both cellular
+                // and satellite active interfaces
                 ifaceSet = mAllMobileIfacesSinceBoot;
             } else {
                 throw new IllegalArgumentException("Invalid transport " + transport);
@@ -1986,53 +2102,108 @@
         if (callingUid != android.os.Process.SYSTEM_UID && callingUid != uid) {
             return UNSUPPORTED;
         }
-        return getEntryValueForType(nativeGetUidStat(uid), type);
+        if (!isEntryValueTypeValid(type)) return UNSUPPORTED;
+
+        if (mAlwaysUseTrafficStatsRateLimitCache
+                || mDeps.isChangeEnabled(ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, callingUid)) {
+            final NetworkStats.Entry entry = mTrafficStatsUidCache.getOrCompute(IFACE_ALL, uid,
+                    () -> mDeps.nativeGetUidStat(uid));
+            return getEntryValueForType(entry, type);
+        }
+
+        return getEntryValueForType(mDeps.nativeGetUidStat(uid), type);
+    }
+
+    @Nullable
+    private NetworkStats.Entry getIfaceStatsInternal(@NonNull String iface) {
+        final NetworkStats.Entry entry = mDeps.nativeGetIfaceStat(iface);
+        if (entry == null) {
+            return null;
+        }
+        // When tethering offload is in use, nativeIfaceStats does not contain usage from
+        // offload, add it back here. Note that the included statistics might be stale
+        // since polling newest stats from hardware might impact system health and not
+        // suitable for TrafficStats API use cases.
+        entry.add(getProviderIfaceStats(iface));
+        return entry;
     }
 
     @Override
     public long getIfaceStats(@NonNull String iface, int type) {
         Objects.requireNonNull(iface);
-        final NetworkStats.Entry entry = nativeGetIfaceStat(iface);
-        final long value = getEntryValueForType(entry, type);
-        if (value == UNSUPPORTED) {
-            return UNSUPPORTED;
-        } else {
-            // When tethering offload is in use, nativeIfaceStats does not contain usage from
-            // offload, add it back here. Note that the included statistics might be stale
-            // since polling newest stats from hardware might impact system health and not
-            // suitable for TrafficStats API use cases.
-            entry.add(getProviderIfaceStats(iface));
+        if (!isEntryValueTypeValid(type)) return UNSUPPORTED;
+
+        if (mAlwaysUseTrafficStatsRateLimitCache
+                || mDeps.isChangeEnabled(
+                        ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, Binder.getCallingUid())) {
+            final NetworkStats.Entry entry = mTrafficStatsIfaceCache.getOrCompute(iface, UID_ALL,
+                    () -> getIfaceStatsInternal(iface));
             return getEntryValueForType(entry, type);
         }
+
+        return getEntryValueForType(getIfaceStatsInternal(iface), type);
     }
 
     private long getEntryValueForType(@Nullable NetworkStats.Entry entry, int type) {
         if (entry == null) return UNSUPPORTED;
+        if (!isEntryValueTypeValid(type)) return UNSUPPORTED;
         switch (type) {
-            case TrafficStats.TYPE_RX_BYTES:
+            case TYPE_RX_BYTES:
                 return entry.rxBytes;
-            case TrafficStats.TYPE_TX_BYTES:
-                return entry.txBytes;
-            case TrafficStats.TYPE_RX_PACKETS:
+            case TYPE_RX_PACKETS:
                 return entry.rxPackets;
-            case TrafficStats.TYPE_TX_PACKETS:
+            case TYPE_TX_BYTES:
+                return entry.txBytes;
+            case TYPE_TX_PACKETS:
                 return entry.txPackets;
             default:
-                return UNSUPPORTED;
+                throw new IllegalStateException("Bug: Invalid type: "
+                        + type + " should not reach here.");
         }
     }
 
+    private boolean isEntryValueTypeValid(int type) {
+        switch (type) {
+            case TYPE_RX_BYTES:
+            case TYPE_RX_PACKETS:
+            case TYPE_TX_BYTES:
+            case TYPE_TX_PACKETS:
+                return true;
+            default :
+                return false;
+        }
+    }
+
+    @Nullable
+    private NetworkStats.Entry getTotalStatsInternal() {
+        final NetworkStats.Entry entry = mDeps.nativeGetTotalStat();
+        if (entry == null) {
+            return null;
+        }
+        entry.add(getProviderIfaceStats(IFACE_ALL));
+        return entry;
+    }
+
     @Override
     public long getTotalStats(int type) {
-        final NetworkStats.Entry entry = nativeGetTotalStat();
-        final long value = getEntryValueForType(entry, type);
-        if (value == UNSUPPORTED) {
-            return UNSUPPORTED;
-        } else {
-            // Refer to comment in getIfaceStats
-            entry.add(getProviderIfaceStats(IFACE_ALL));
+        if (!isEntryValueTypeValid(type)) return UNSUPPORTED;
+        if (mAlwaysUseTrafficStatsRateLimitCache
+                || mDeps.isChangeEnabled(
+                        ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, Binder.getCallingUid())) {
+            final NetworkStats.Entry entry = mTrafficStatsTotalCache.getOrCompute(
+                    IFACE_ALL, UID_ALL, () -> getTotalStatsInternal());
             return getEntryValueForType(entry, type);
         }
+
+        return getEntryValueForType(getTotalStatsInternal(), type);
+    }
+
+    @Override
+    public void clearTrafficStatsRateLimitCaches() {
+        PermissionUtils.enforceNetworkStackPermissionOr(mContext, NETWORK_SETTINGS);
+        mTrafficStatsUidCache.clear();
+        mTrafficStatsIfaceCache.clear();
+        mTrafficStatsTotalCache.clear();
     }
 
     private NetworkStats.Entry getProviderIfaceStats(@Nullable String iface) {
@@ -2193,7 +2364,9 @@
         for (NetworkStateSnapshot snapshot : snapshots) {
             final int displayTransport =
                     getDisplayTransport(snapshot.getNetworkCapabilities().getTransportTypes());
-            final boolean isMobile = (NetworkCapabilities.TRANSPORT_CELLULAR == displayTransport);
+            // Consider satellite transport to support satellite stats appear as type_mobile
+            final boolean isMobile = NetworkCapabilities.TRANSPORT_CELLULAR == displayTransport
+                    || NetworkCapabilities.TRANSPORT_SATELLITE == displayTransport;
             final boolean isWifi = (NetworkCapabilities.TRANSPORT_WIFI == displayTransport);
             final boolean isDefault = CollectionUtils.contains(
                     mDefaultNetworks, snapshot.getNetwork());
@@ -2326,12 +2499,14 @@
     }
 
     /**
-     * For networks with {@code TRANSPORT_CELLULAR}, get ratType that was obtained through
-     * {@link PhoneStateListener}. Otherwise, return 0 given that other networks with different
-     * transport types do not actually fill this value.
+     * For networks with {@code TRANSPORT_CELLULAR} Or {@code TRANSPORT_SATELLITE}, get ratType
+     * that was obtained through {@link PhoneStateListener}. Otherwise, return 0 given that other
+     * networks with different transport types do not actually fill this value.
      */
     private int getRatTypeForStateSnapshot(@NonNull NetworkStateSnapshot state) {
-        if (!state.getNetworkCapabilities().hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
+        if (!state.getNetworkCapabilities().hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)
+                && !state.getNetworkCapabilities()
+                .hasTransport(NetworkCapabilities.TRANSPORT_SATELLITE)) {
             return 0;
         }
 
@@ -2784,6 +2959,13 @@
             } catch (IOException e) {
                 pw.println("(failed to dump FastDataInput counters)");
             }
+            pw.print("trafficstats.cache.alwaysuse", mAlwaysUseTrafficStatsRateLimitCache);
+            pw.println();
+            pw.print(TRAFFIC_STATS_CACHE_EXPIRY_DURATION_NAME,
+                    mTrafficStatsRateLimitCacheExpiryDuration);
+            pw.println();
+            pw.print(TRAFFIC_STATS_CACHE_MAX_ENTRIES_NAME, mTrafficStatsRateLimitCacheMaxEntries);
+            pw.println();
 
             pw.decreaseIndent();
 
diff --git a/service-t/src/com/android/server/net/TrafficStatsRateLimitCache.java b/service-t/src/com/android/server/net/TrafficStatsRateLimitCache.java
index 8598ac4..ca97d07 100644
--- a/service-t/src/com/android/server/net/TrafficStatsRateLimitCache.java
+++ b/service-t/src/com/android/server/net/TrafficStatsRateLimitCache.java
@@ -19,12 +19,13 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.net.NetworkStats;
+import android.util.LruCache;
 
 import com.android.internal.annotations.GuardedBy;
 
 import java.time.Clock;
-import java.util.HashMap;
 import java.util.Objects;
+import java.util.function.Supplier;
 
 /**
  * A thread-safe cache for storing and retrieving {@link NetworkStats.Entry} objects,
@@ -39,10 +40,12 @@
      *
      * @param clock The {@link Clock} to use for determining timestamps.
      * @param expiryDurationMs The expiry duration in milliseconds.
+     * @param maxSize Maximum number of entries.
      */
-    TrafficStatsRateLimitCache(@NonNull Clock clock, long expiryDurationMs) {
+    TrafficStatsRateLimitCache(@NonNull Clock clock, long expiryDurationMs, int maxSize) {
         mClock = clock;
         mExpiryDurationMs = expiryDurationMs;
+        mMap = new LruCache<>(maxSize);
     }
 
     private static class TrafficStatsCacheKey {
@@ -81,7 +84,7 @@
     }
 
     @GuardedBy("mMap")
-    private final HashMap<TrafficStatsCacheKey, TrafficStatsCacheValue> mMap = new HashMap<>();
+    private final LruCache<TrafficStatsCacheKey, TrafficStatsCacheValue> mMap;
 
     /**
      * Retrieves a {@link NetworkStats.Entry} from the cache, associated with the given key.
@@ -105,6 +108,36 @@
     }
 
     /**
+     * Retrieves a {@link NetworkStats.Entry} from the cache, associated with the given key.
+     * If the entry is not found in the cache or has expired, computes it using the provided
+     * {@code supplier} and stores the result in the cache.
+     *
+     * @param iface The interface name to include in the cache key. {@code IFACE_ALL}
+     *              if not applicable.
+     * @param uid The UID to include in the cache key. {@code UID_ALL} if not applicable.
+     * @param supplier The {@link Supplier} to compute the {@link NetworkStats.Entry} if not found.
+     * @return The cached or computed {@link NetworkStats.Entry}, or null if not found, expired,
+     *         or if the {@code supplier} returns null.
+     */
+    @Nullable
+    NetworkStats.Entry getOrCompute(String iface, int uid,
+            @NonNull Supplier<NetworkStats.Entry> supplier) {
+        synchronized (mMap) {
+            final NetworkStats.Entry cachedValue = get(iface, uid);
+            if (cachedValue != null) {
+                return cachedValue;
+            }
+
+            // Entry not found or expired, compute it
+            final NetworkStats.Entry computedEntry = supplier.get();
+            if (computedEntry != null && !computedEntry.isEmpty()) {
+                put(iface, uid, computedEntry);
+            }
+            return computedEntry;
+        }
+    }
+
+    /**
      * Stores a {@link NetworkStats.Entry} in the cache, associated with the given key.
      *
      * @param iface The interface name to include in the cache key. Null if not applicable.
@@ -124,7 +157,7 @@
      */
     void clear() {
         synchronized (mMap) {
-            mMap.clear();
+            mMap.evictAll();
         }
     }
 
diff --git a/service/Android.bp b/service/Android.bp
index c35c4f8..1dd09a9 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -188,7 +188,7 @@
         "androidx.annotation_annotation",
         "connectivity-net-module-utils-bpf",
         "connectivity_native_aidl_interface-lateststable-java",
-        "dnsresolver_aidl_interface-V14-java",
+        "dnsresolver_aidl_interface-V15-java",
         "modules-utils-shell-command-handler",
         "net-utils-device-common",
         "net-utils-device-common-ip",
@@ -199,7 +199,9 @@
         "PlatformProperties",
         "service-connectivity-protos",
         "service-connectivity-stats-protos",
-        "net-utils-multicast-forwarding-structs",
+        // The required dependency net-utils-device-common-struct-base is in the classpath via
+        // framework-connectivity
+        "net-utils-device-common-struct",
     ],
     apex_available: [
         "com.android.tethering",
diff --git a/service/ServiceConnectivityResources/res/values-fa/strings.xml b/service/ServiceConnectivityResources/res/values-fa/strings.xml
index 09f1255..02c60df 100644
--- a/service/ServiceConnectivityResources/res/values-fa/strings.xml
+++ b/service/ServiceConnectivityResources/res/values-fa/strings.xml
@@ -23,15 +23,15 @@
     <!-- no translation found for network_available_sign_in_detailed (8439369644697866359) -->
     <skip />
     <string name="mobile_network_available_no_internet" msgid="1000871587359324217">"اتصال اینترنت وجود ندارد"</string>
-    <string name="mobile_network_available_no_internet_detailed" msgid="5438738723127062816">"ممکن است داده <xliff:g id="NETWORK_CARRIER">%1$s</xliff:g> تمام شده باشد. برای گزینه‌ها تک‌ضرب بزنید."</string>
-    <string name="mobile_network_available_no_internet_detailed_unknown_carrier" msgid="5375681117265354337">"ممکن است داده شما تمام شده باشد. برای گزینه‌ها تک‌ضرب بزنید."</string>
+    <string name="mobile_network_available_no_internet_detailed" msgid="5438738723127062816">"ممکن است داده <xliff:g id="NETWORK_CARRIER">%1$s</xliff:g> تمام شده باشد. برای گزینه‌ها ضربه بزنید."</string>
+    <string name="mobile_network_available_no_internet_detailed_unknown_carrier" msgid="5375681117265354337">"ممکن است داده شما تمام شده باشد. برای گزینه‌ها ضربه بزنید."</string>
     <string name="wifi_no_internet" msgid="1326348603404555475">"<xliff:g id="NETWORK_SSID">%1$s</xliff:g> به اینترنت دسترسی ندارد"</string>
-    <string name="wifi_no_internet_detailed" msgid="1746921096565304090">"برای گزینه‌ها تک‌ضرب بزنید"</string>
+    <string name="wifi_no_internet_detailed" msgid="1746921096565304090">"برای گزینه‌ها ضربه بزنید"</string>
     <string name="mobile_no_internet" msgid="4087718456753201450">"شبکه تلفن همراه به اینترنت دسترسی ندارد"</string>
     <string name="other_networks_no_internet" msgid="5693932964749676542">"شبکه به اینترنت دسترسی ندارد"</string>
     <string name="private_dns_broken_detailed" msgid="2677123850463207823">"‏سرور DNS خصوصی قابل دسترسی نیست"</string>
     <string name="network_partial_connectivity" msgid="5549503845834993258">"<xliff:g id="NETWORK_SSID">%1$s</xliff:g> اتصال محدودی دارد"</string>
-    <string name="network_partial_connectivity_detailed" msgid="4732435946300249845">"به‌هرصورت، برای اتصال تک‌ضرب بزنید"</string>
+    <string name="network_partial_connectivity_detailed" msgid="4732435946300249845">"به‌هرصورت، برای اتصال ضربه بزنید"</string>
     <string name="network_switch_metered" msgid="5016937523571166319">"به <xliff:g id="NETWORK_TYPE">%1$s</xliff:g> تغییر کرد"</string>
     <string name="network_switch_metered_detail" msgid="1257300152739542096">"وقتی <xliff:g id="PREVIOUS_NETWORK">%2$s</xliff:g> به اینترنت دسترسی نداشته باشد، دستگاه از <xliff:g id="NEW_NETWORK">%1$s</xliff:g> استفاده می‌کند. ممکن است هزینه‌هایی اعمال شود."</string>
     <string name="network_switch_metered_toast" msgid="70691146054130335">"از <xliff:g id="PREVIOUS_NETWORK">%1$s</xliff:g> به <xliff:g id="NEW_NETWORK">%2$s</xliff:g> تغییر کرد"</string>
diff --git a/service/ServiceConnectivityResources/res/values/config_thread.xml b/service/ServiceConnectivityResources/res/values/config_thread.xml
index f7e47f5..02a9ce6 100644
--- a/service/ServiceConnectivityResources/res/values/config_thread.xml
+++ b/service/ServiceConnectivityResources/res/values/config_thread.xml
@@ -31,4 +31,32 @@
     Thread Network regulatory purposes.
     -->
     <bool name="config_thread_location_use_for_country_code_enabled">true</bool>
+
+    <!-- Specifies the UTF-8 vendor name of this device. If this value is not an empty string, it
+    will be included in TXT value (key is 'vn') of the "_meshcop._udp" mDNS service which is
+    published by the Thread service. A non-empty string value must not exceed length of 24 UTF-8
+    bytes.
+    -->
+    <string translatable="false" name="config_thread_vendor_name">Android</string>
+
+    <!-- Specifies the 24 bits vendor OUI of this device. If this value is not an empty string, it
+    will be included in TXT (key is 'vo') value of the "_meshcop._udp" mDNS service which is
+    published by the Thread service. The OUI can be represented as a base-16 number of six
+    hexadecimal digits, or octets separated by hyphens or dots. For example, "ACDE48", "AC-DE-48"
+    and "AC:DE:48" are all valid representations of the same OUI value.
+    -->
+    <string translatable="false" name="config_thread_vendor_oui"></string>
+
+    <!-- Specifies the UTF-8 product model name of this device. If this value is not an empty
+    string, it will be included in TXT (key is 'mn') value of the "_meshcop._udp" mDNS service
+    which is published by the Thread service. A non-empty string value must not exceed length of 24
+    UTF-8 bytes.
+    -->
+    <string translatable="false" name="config_thread_model_name">Thread Border Router</string>
+
+    <!-- Whether the Thread network will be managed by the Google Home ecosystem. When this value
+    is set, a TXT entry "vgh=0" or "vgh=1" will be added to the "_mehscop._udp" mDNS service
+    respectively (The TXT value is a string).
+    -->
+    <bool name="config_thread_managed_by_google_home">false</bool>
 </resources>
diff --git a/service/ServiceConnectivityResources/res/values/overlayable.xml b/service/ServiceConnectivityResources/res/values/overlayable.xml
index d9af5a3..158b0c8 100644
--- a/service/ServiceConnectivityResources/res/values/overlayable.xml
+++ b/service/ServiceConnectivityResources/res/values/overlayable.xml
@@ -48,6 +48,9 @@
             <!-- Configuration values for ThreadNetworkService -->
             <item type="bool" name="config_thread_default_enabled" />
             <item type="bool" name="config_thread_location_use_for_country_code_enabled" />
+            <item type="string" name="config_thread_vendor_name" />
+            <item type="string" name="config_thread_vendor_oui" />
+            <item type="string" name="config_thread_model_name" />
         </policy>
     </overlayable>
 </resources>
diff --git a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
index c125bd6..c0082bb 100644
--- a/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
+++ b/service/jni/com_android_server_connectivity_ClatCoordinator.cpp
@@ -80,7 +80,8 @@
       case VERIFY_BIN: return;
       case VERIFY_PROG:   fd = bpf::retrieveProgram(path); break;
       case VERIFY_MAP_RO: fd = bpf::mapRetrieveRO(path); break;
-      case VERIFY_MAP_RW: fd = bpf::mapRetrieveRW(path); break;
+      // lockless: we're just checking access rights and will immediately close the fd
+      case VERIFY_MAP_RW: fd = bpf::mapRetrieveLocklessRW(path); break;
     }
 
     if (fd < 0) ALOGF("bpf_obj_get '%s' failed, errno=%d", path, errno);
@@ -113,7 +114,8 @@
     if (!modules::sdklevel::IsAtLeastT()) return;
 
     V("/sys/fs/bpf", S_IFDIR|S_ISVTX|0777, ROOT, ROOT, "fs_bpf", DIR);
-    V("/sys/fs/bpf/net_shared", S_IFDIR|S_ISVTX|0777, ROOT, ROOT, "fs_bpf_net_shared", DIR);
+
+    V("/sys/fs/bpf/net_shared", S_IFDIR|01777, ROOT, ROOT, "fs_bpf_net_shared", DIR);
 
     // pre-U we do not have selinux privs to getattr on bpf maps/progs
     // so while the below *should* be as listed, we have no way to actually verify
diff --git a/service/lint-baseline.xml b/service/lint-baseline.xml
index 3e11d52..b09589c 100644
--- a/service/lint-baseline.xml
+++ b/service/lint-baseline.xml
@@ -3,17 +3,6 @@
 
     <issue
         id="NewApi"
-        message="Call requires API level 33 (current min is 30): `getUidRule`"
-        errorLine1="        return BpfNetMapsReader.getUidRule(sUidOwnerMap, childChain, uid);"
-        errorLine2="                                ~~~~~~~~~~">
-        <location
-            file="packages/modules/Connectivity/service/src/com/android/server/BpfNetMaps.java"
-            line="643"
-            column="33"/>
-    </issue>
-
-    <issue
-        id="NewApi"
         message="Call requires API level 31 (current min is 30): `BpfBitmap`"
         errorLine1="                return new BpfBitmap(BLOCKED_PORTS_MAP_PATH);"
         errorLine2="                       ~~~~~~~~~~~~~">
diff --git a/service/src/com/android/server/BpfLoaderRcUtils.java b/service/src/com/android/server/BpfLoaderRcUtils.java
deleted file mode 100644
index 293e757..0000000
--- a/service/src/com/android/server/BpfLoaderRcUtils.java
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server;
-
-import android.annotation.NonNull;
-import android.util.Log;
-
-import com.android.internal.annotations.VisibleForTesting;
-import com.android.modules.utils.build.SdkLevel;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * BpfRcUtils is responsible for comparing the bpf loader rc file.
- *
- * {@hide}
- */
-public class BpfLoaderRcUtils {
-    public static final String TAG = BpfLoaderRcUtils.class.getSimpleName();
-
-    private static final List<String> BPF_LOADER_RC_S_T = List.of(
-            "service bpfloader /system/bin/bpfloader",
-            "capabilities CHOWN SYS_ADMIN NET_ADMIN",
-            "rlimit memlock 1073741824 1073741824",
-            "oneshot",
-            "reboot_on_failure reboot,bpfloader-failed",
-            "updatable"
-    );
-
-    private static final List<String> BPF_LOADER_RC_U = List.of(
-            "service bpfloader /system/bin/bpfloader",
-            "capabilities CHOWN SYS_ADMIN NET_ADMIN",
-            "group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system",
-            "user root",
-            "rlimit memlock 1073741824 1073741824",
-            "oneshot",
-            "reboot_on_failure reboot,bpfloader-failed",
-            "updatable"
-    );
-
-    private static final List<String> BPF_LOADER_RC_UQPR2 = List.of(
-            "service bpfloader /system/bin/netbpfload",
-            "capabilities CHOWN SYS_ADMIN NET_ADMIN",
-            "group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system",
-            "user root",
-            "rlimit memlock 1073741824 1073741824",
-            "oneshot",
-            "reboot_on_failure reboot,bpfloader-failed",
-            "updatable"
-    );
-
-
-    private static final String BPF_LOADER_RC_FILE_PATH = "/etc/init/bpfloader.rc";
-    private static final String NET_BPF_LOAD_RC_FILE_PATH = "/etc/init/netbpfload.rc";
-
-    private BpfLoaderRcUtils() {
-    }
-
-    /**
-     * Load the bpf rc file content from the input stream.
-     */
-    @VisibleForTesting
-    public static List<String> loadExistingBpfRcFile(@NonNull InputStream inputStream) {
-        List<String> contents = new ArrayList<>();
-        boolean bpfSectionFound = false;
-        try (BufferedReader br = new BufferedReader(
-                new InputStreamReader(inputStream, StandardCharsets.ISO_8859_1))) {
-            String line;
-            while ((line = br.readLine()) != null) {
-                line = line.trim();
-                if (line.isEmpty()) {
-                    continue;
-                }
-                if (line.startsWith("#")) {
-                    continue;
-                }
-                // If bpf service section was found and new service or action section start. The
-                // read should stop.
-                if (bpfSectionFound && (line.startsWith("service ") || (line.startsWith("on ")))) {
-                    break;
-                }
-                if (line.startsWith("service bpfloader ")) {
-                    bpfSectionFound = true;
-                }
-                if (bpfSectionFound) {
-                    contents.add(line);
-                }
-            }
-        } catch (IOException e) {
-            Log.wtf("read input stream failed.", e);
-            contents.clear();
-            return contents;
-        }
-        return contents;
-    }
-
-    /**
-     * Check the bpfLoader rc file on the system image matches any of the template files.
-     */
-    public static boolean checkBpfLoaderRc() {
-        File bpfRcFile = new File(BPF_LOADER_RC_FILE_PATH);
-        if (!bpfRcFile.exists()) {
-            if (SdkLevel.isAtLeastU()) {
-                bpfRcFile = new File(NET_BPF_LOAD_RC_FILE_PATH);
-            }
-            if (!bpfRcFile.exists()) {
-                Log.wtf(TAG,
-                        "neither " + BPF_LOADER_RC_FILE_PATH + " nor " + NET_BPF_LOAD_RC_FILE_PATH
-                                + " exist.");
-                return false;
-            }
-            // Check bpf rc file in U QPR2
-            return compareBpfLoaderRc(bpfRcFile, BPF_LOADER_RC_UQPR2);
-        }
-
-        if (SdkLevel.isAtLeastU()) {
-            // Check bpf rc file in U
-            return compareBpfLoaderRc(bpfRcFile, BPF_LOADER_RC_U);
-        }
-        // Check bpf rc file in S/T
-        return compareBpfLoaderRc(bpfRcFile, BPF_LOADER_RC_S_T);
-    }
-
-    private static boolean compareBpfLoaderRc(@NonNull File bpfRcFile,
-            @NonNull List<String> template) {
-        try {
-            List<String> actualContent = loadExistingBpfRcFile(new FileInputStream(bpfRcFile));
-            if (!actualContent.equals(template)) {
-                Log.wtf(TAG, "BPF rc file is not same as the template files " + actualContent);
-                return false;
-            }
-        } catch (FileNotFoundException e) {
-            Log.wtf(bpfRcFile.getPath() + " doesn't exist.", e);
-            return false;
-        }
-        return true;
-    }
-}
diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index a7fddd0..44868b2d 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -23,17 +23,17 @@
 import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED;
 import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_KEY;
 import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_MAP_PATH;
-import static android.net.BpfNetMapsConstants.HAPPY_BOX_MATCH;
 import static android.net.BpfNetMapsConstants.IIF_MATCH;
 import static android.net.BpfNetMapsConstants.INGRESS_DISCARD_MAP_PATH;
 import static android.net.BpfNetMapsConstants.LOCKDOWN_VPN_MATCH;
-import static android.net.BpfNetMapsConstants.PENALTY_BOX_MATCH;
 import static android.net.BpfNetMapsConstants.UID_OWNER_MAP_PATH;
 import static android.net.BpfNetMapsConstants.UID_PERMISSION_MAP_PATH;
 import static android.net.BpfNetMapsConstants.UID_RULES_CONFIGURATION_KEY;
 import static android.net.BpfNetMapsUtils.getMatchByFirewallChain;
 import static android.net.BpfNetMapsUtils.isFirewallAllowList;
 import static android.net.BpfNetMapsUtils.matchToString;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_MASK;
+import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
 import static android.net.ConnectivityManager.FIREWALL_RULE_ALLOW;
 import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
 import static android.net.INetd.PERMISSION_INTERNET;
@@ -49,12 +49,13 @@
 
 import android.app.StatsManager;
 import android.content.Context;
-import android.net.BpfNetMapsReader;
+import android.net.BpfNetMapsUtils;
 import android.net.INetd;
 import android.net.UidOwnerValue;
 import android.os.Build;
 import android.os.RemoteException;
 import android.os.ServiceSpecificException;
+import android.os.UserHandle;
 import android.system.ErrnoException;
 import android.system.Os;
 import android.util.ArraySet;
@@ -71,6 +72,7 @@
 import com.android.net.module.util.BpfDump;
 import com.android.net.module.util.BpfMap;
 import com.android.net.module.util.IBpfMap;
+import com.android.net.module.util.SingleWriterBpfMap;
 import com.android.net.module.util.Struct;
 import com.android.net.module.util.Struct.S32;
 import com.android.net.module.util.Struct.U32;
@@ -187,7 +189,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<S32, U32> getConfigurationMap() {
         try {
-            return new BpfMap<>(
+            return SingleWriterBpfMap.getSingleton(
                     CONFIGURATION_MAP_PATH, S32.class, U32.class);
         } catch (ErrnoException e) {
             throw new IllegalStateException("Cannot open netd configuration map", e);
@@ -197,7 +199,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<S32, UidOwnerValue> getUidOwnerMap() {
         try {
-            return new BpfMap<>(
+            return SingleWriterBpfMap.getSingleton(
                     UID_OWNER_MAP_PATH, S32.class, UidOwnerValue.class);
         } catch (ErrnoException e) {
             throw new IllegalStateException("Cannot open uid owner map", e);
@@ -207,7 +209,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<S32, U8> getUidPermissionMap() {
         try {
-            return new BpfMap<>(
+            return SingleWriterBpfMap.getSingleton(
                     UID_PERMISSION_MAP_PATH, S32.class, U8.class);
         } catch (ErrnoException e) {
             throw new IllegalStateException("Cannot open uid permission map", e);
@@ -217,6 +219,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<CookieTagMapKey, CookieTagMapValue> getCookieTagMap() {
         try {
+            // Cannot use SingleWriterBpfMap because it's written by ClatCoordinator as well.
             return new BpfMap<>(COOKIE_TAG_MAP_PATH,
                     CookieTagMapKey.class, CookieTagMapValue.class);
         } catch (ErrnoException e) {
@@ -227,7 +230,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<S32, U8> getDataSaverEnabledMap() {
         try {
-            return new BpfMap<>(
+            return SingleWriterBpfMap.getSingleton(
                     DATA_SAVER_ENABLED_MAP_PATH, S32.class, U8.class);
         } catch (ErrnoException e) {
             throw new IllegalStateException("Cannot open data saver enabled map", e);
@@ -237,7 +240,7 @@
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private static IBpfMap<IngressDiscardKey, IngressDiscardValue> getIngressDiscardMap() {
         try {
-            return new BpfMap<>(INGRESS_DISCARD_MAP_PATH,
+            return SingleWriterBpfMap.getSingleton(INGRESS_DISCARD_MAP_PATH,
                     IngressDiscardKey.class, IngressDiscardValue.class);
         } catch (ErrnoException e) {
             throw new IllegalStateException("Cannot open ingress discard map", e);
@@ -446,62 +449,6 @@
     }
 
     /**
-     * Add naughty app bandwidth rule for specific app
-     *
-     * @param uid uid of target app
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
-    public void addNaughtyApp(final int uid) {
-        throwIfPreT("addNaughtyApp is not available on pre-T devices");
-
-        addRule(uid, PENALTY_BOX_MATCH, "addNaughtyApp");
-    }
-
-    /**
-     * Remove naughty app bandwidth rule for specific app
-     *
-     * @param uid uid of target app
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
-    public void removeNaughtyApp(final int uid) {
-        throwIfPreT("removeNaughtyApp is not available on pre-T devices");
-
-        removeRule(uid, PENALTY_BOX_MATCH, "removeNaughtyApp");
-    }
-
-    /**
-     * Add nice app bandwidth rule for specific app
-     *
-     * @param uid uid of target app
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
-    public void addNiceApp(final int uid) {
-        throwIfPreT("addNiceApp is not available on pre-T devices");
-
-        addRule(uid, HAPPY_BOX_MATCH, "addNiceApp");
-    }
-
-    /**
-     * Remove nice app bandwidth rule for specific app
-     *
-     * @param uid uid of target app
-     * @throws ServiceSpecificException in case of failure, with an error code indicating the
-     *                                  cause of the failure.
-     */
-    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
-    public void removeNiceApp(final int uid) {
-        throwIfPreT("removeNiceApp is not available on pre-T devices");
-
-        removeRule(uid, HAPPY_BOX_MATCH, "removeNiceApp");
-    }
-
-    /**
      * Set target firewall child chain
      *
      * @param childChain target chain to enable
@@ -535,14 +482,11 @@
      * @throws UnsupportedOperationException if called on pre-T devices.
      * @throws ServiceSpecificException in case of failure, with an error code indicating the
      *                                  cause of the failure.
-     *
-     * @deprecated Use {@link BpfNetMapsReader#isChainEnabled} instead.
      */
-    // TODO: Migrate the callers to use {@link BpfNetMapsReader#isChainEnabled} instead.
     @Deprecated
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     public boolean isChainEnabled(final int childChain) {
-        return BpfNetMapsReader.isChainEnabled(sConfigurationMap, childChain);
+        return BpfNetMapsUtils.isChainEnabled(sConfigurationMap, childChain);
     }
 
     private Set<Integer> asSet(final int[] uids) {
@@ -635,14 +579,13 @@
      * @throws UnsupportedOperationException if called on pre-T devices.
      * @throws ServiceSpecificException in case of failure, with an error code indicating the
      *                                  cause of the failure.
-     *
-     * @deprecated use {@link BpfNetMapsReader#getUidRule} instead.
      */
-    // TODO: Migrate the callers to use {@link BpfNetMapsReader#getUidRule} instead.
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     public int getUidRule(final int childChain, final int uid) {
-        return BpfNetMapsReader.getUidRule(sUidOwnerMap, childChain, uid);
+        return BpfNetMapsUtils.getUidRule(sUidOwnerMap, childChain, uid);
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private Set<Integer> getUidsMatchEnabled(final int childChain) throws ErrnoException {
         final long match = getMatchByFirewallChain(childChain);
         Set<Integer> uids = new ArraySet<>();
@@ -671,6 +614,7 @@
      * @param childChain target chain
      * @return Set of uids
      */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     public Set<Integer> getUidsWithAllowRuleOnAllowListChain(final int childChain)
             throws ErrnoException {
         if (!isFirewallAllowList(childChain)) {
@@ -692,6 +636,7 @@
      * @param childChain target chain
      * @return Set of uids
      */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     public Set<Integer> getUidsWithDenyRuleOnDenyListChain(final int childChain)
             throws ErrnoException {
         if (isFirewallAllowList(childChain)) {
@@ -865,6 +810,28 @@
     }
 
     /**
+     * Get granted permissions for specified uid. If uid is not in the map, this method returns
+     * {@link android.net.INetd.PERMISSION_INTERNET} since this is a default permission.
+     * See {@link #setNetPermForUids}
+     *
+     * @param uid target uid
+     * @return    granted permissions.
+     */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    public int getNetPermForUid(final int uid) {
+        final int appId = UserHandle.getAppId(uid);
+        try {
+            // Key of uid permission map is appId
+            // TODO: Rename map name
+            final U8 permissions = sUidPermissionMap.getValue(new S32(appId));
+            return permissions != null ? permissions.val : PERMISSION_INTERNET;
+        } catch (ErrnoException e) {
+            Log.wtf(TAG, "Failed to get permission for uid: " + uid);
+            return PERMISSION_INTERNET;
+        }
+    }
+
+    /**
      * Set Data Saver enabled or disabled
      *
      * @param enable     whether Data Saver is enabled or disabled.
@@ -924,6 +891,49 @@
         }
     }
 
+    /**
+     * Get blocked reasons for specified uid
+     *
+     * @param uid Target Uid
+     * @return Reasons of network access blocking for an UID
+     */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    public int getUidNetworkingBlockedReasons(final int uid) {
+        return BpfNetMapsUtils.getUidNetworkingBlockedReasons(uid,
+                sConfigurationMap, sUidOwnerMap, sDataSaverEnabledMap);
+    }
+
+    /**
+     * Return whether the network access of specified uid is blocked on metered networks
+     *
+     * @param uid The target uid.
+     * @return True if the network access is blocked on metered networks. Otherwise, false
+     */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    public boolean isUidRestrictedOnMeteredNetworks(final int uid) {
+        final int blockedReasons = getUidNetworkingBlockedReasons(uid);
+        return (blockedReasons & BLOCKED_METERED_REASON_MASK) != BLOCKED_REASON_NONE;
+    }
+
+    /*
+     * Return whether the network is blocked by firewall chains for the given uid.
+     *
+     * Note that {@link #getDataSaverEnabled()} has a latency before V.
+     *
+     * @param uid The target uid.
+     * @param isNetworkMetered Whether the target network is metered.
+     *
+     * @return True if the network is blocked. Otherwise, false.
+     * @throws ServiceSpecificException if the read fails.
+     *
+     * @hide
+     */
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    public boolean isUidNetworkingBlocked(final int uid, boolean isNetworkMetered) {
+        return BpfNetMapsUtils.isUidNetworkingBlocked(uid, isNetworkMetered,
+                sConfigurationMap, sUidOwnerMap, sDataSaverEnabledMap);
+    }
+
     /** Register callback for statsd to pull atom. */
     @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     public void setPullAtomCallback(final Context context) {
@@ -986,6 +996,7 @@
         return sj.toString();
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private void dumpOwnerMatchConfig(final IndentingPrintWriter pw) {
         try {
             final long match = sConfigurationMap.getValue(UID_RULES_CONFIGURATION_KEY).val;
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index 6839c22..2a3058c 100755
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -24,6 +24,8 @@
 import static android.content.pm.PackageManager.FEATURE_WIFI;
 import static android.content.pm.PackageManager.FEATURE_WIFI_DIRECT;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+import static android.net.BpfNetMapsConstants.METERED_ALLOW_CHAINS;
+import static android.net.BpfNetMapsConstants.METERED_DENY_CHAINS;
 import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_PROBES_ATTEMPTED_BITMASK;
 import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_PROBES_SUCCEEDED_BITMASK;
 import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_VALIDATION_RESULT;
@@ -34,14 +36,17 @@
 import static android.net.ConnectivityDiagnosticsManager.DataStallReport.KEY_TCP_PACKET_FAIL_RATE;
 import static android.net.ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED;
 import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_MASK;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_BACKGROUND;
 import static android.net.ConnectivityManager.BLOCKED_REASON_LOCKDOWN_VPN;
 import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_NETWORK_RESTRICTED;
 import static android.net.ConnectivityManager.CALLBACK_IP_CHANGED;
 import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.FIREWALL_RULE_ALLOW;
 import static android.net.ConnectivityManager.FIREWALL_RULE_DEFAULT;
 import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
+import static android.net.ConnectivityManager.NetworkCallback.DECLARED_METHODS_NONE;
 import static android.net.ConnectivityManager.TYPE_BLUETOOTH;
 import static android.net.ConnectivityManager.TYPE_ETHERNET;
 import static android.net.ConnectivityManager.TYPE_MOBILE;
@@ -61,7 +66,9 @@
 import static android.net.ConnectivityManager.TYPE_WIFI_P2P;
 import static android.net.ConnectivityManager.getNetworkTypeName;
 import static android.net.ConnectivityManager.isNetworkTypeValid;
+import static android.net.ConnectivityManager.NetworkCallback.DECLARED_METHODS_ALL;
 import static android.net.ConnectivitySettingsManager.PRIVATE_DNS_MODE_OPPORTUNISTIC;
+import static android.net.INetd.PERMISSION_INTERNET;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_PROBE_PRIVDNS;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_RESULT_PARTIAL;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_RESULT_SKIPPED;
@@ -72,6 +79,7 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_FOREGROUND;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
@@ -97,29 +105,44 @@
 import static android.net.NetworkScore.POLICY_TRANSPORT_PRIMARY;
 import static android.net.OemNetworkPreferences.OEM_NETWORK_PREFERENCE_TEST;
 import static android.net.OemNetworkPreferences.OEM_NETWORK_PREFERENCE_TEST_ONLY;
+import static android.net.connectivity.ConnectivityCompatChanges.ENABLE_MATCH_LOCAL_NETWORK;
+import static android.net.connectivity.ConnectivityCompatChanges.ENABLE_SELF_CERTIFIED_CAPABILITIES_DECLARATION;
+import static android.net.connectivity.ConnectivityCompatChanges.NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION;
 import static android.os.Process.INVALID_UID;
 import static android.os.Process.VPN_UID;
 import static android.system.OsConstants.ETH_P_ALL;
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
 
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_GETSOCKOPT;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET4_BIND;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET4_CONNECT;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET6_BIND;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET6_CONNECT;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_EGRESS;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_INGRESS;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_SOCK_CREATE;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_INET_SOCK_RELEASE;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_SETSOCKOPT;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP4_RECVMSG;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP4_SENDMSG;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP6_RECVMSG;
+import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP6_SENDMSG;
 import static com.android.net.module.util.NetworkMonitorUtils.isPrivateDnsValidationRequired;
 import static com.android.net.module.util.PermissionUtils.enforceAnyPermissionOf;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermission;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermissionOr;
 import static com.android.net.module.util.PermissionUtils.hasAnyPermissionOf;
 import static com.android.server.ConnectivityStatsLog.CONNECTIVITY_STATE_SAMPLE;
+import static com.android.server.connectivity.ConnectivityFlags.DELAY_DESTROY_SOCKETS;
 import static com.android.server.connectivity.ConnectivityFlags.REQUEST_RESTRICTED_WIFI;
+import static com.android.server.connectivity.ConnectivityFlags.INGRESS_TO_VPN_ADDRESS_FILTERING;
 
 import android.Manifest;
 import android.annotation.CheckResult;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.annotation.RequiresApi;
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.ActivityManager;
@@ -214,7 +237,6 @@
 import android.net.Uri;
 import android.net.VpnManager;
 import android.net.VpnTransportInfo;
-import android.net.connectivity.ConnectivityCompatChanges;
 import android.net.metrics.IpConnectivityLog;
 import android.net.metrics.NetworkEvent;
 import android.net.netd.aidl.NativeUidRangeConfig;
@@ -269,8 +291,6 @@
 import android.util.SparseIntArray;
 import android.util.StatsEvent;
 
-import androidx.annotation.RequiresApi;
-
 import com.android.connectivity.resources.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
@@ -392,6 +412,8 @@
     private static final String NETWORK_ARG = "networks";
     private static final String REQUEST_ARG = "requests";
     private static final String TRAFFICCONTROLLER_ARG = "trafficcontroller";
+    public static final String CLATEGRESS4RAWBPFMAP_ARG = "clatEgress4RawBpfMap";
+    public static final String CLATINGRESS6RAWBPFMAP_ARG = "clatIngress6RawBpfMap";
 
     private static final boolean DBG = true;
     private static final boolean DDBG = Log.isLoggable(TAG, Log.DEBUG);
@@ -474,10 +496,35 @@
     private volatile boolean mLockdownEnabled;
 
     private final boolean mRequestRestrictedWifiEnabled;
+    private final boolean mBackgroundFirewallChainEnabled;
+
+    private final boolean mUseDeclaredMethodsForCallbacksEnabled;
 
     /**
-     * Stale copy of uid blocked reasons provided by NPMS. As long as they are accessed only in
-     * internal handler thread, they don't need a lock.
+     * Uids ConnectivityService tracks blocked status of to send blocked status callbacks.
+     * Key is uid based on mAsUid of registered networkRequestInfo
+     * Value is count of registered networkRequestInfo
+     *
+     * This is necessary because when a firewall chain is enabled or disabled, that affects all UIDs
+     * on the system, not just UIDs on that firewall chain. For example, entering doze mode affects
+     * all UIDs that are not on the dozable chain. ConnectivityService doesn't know which UIDs are
+     * running. But it only needs to send onBlockedStatusChanged to UIDs that have at least one
+     * NetworkCallback registered.
+     *
+     * UIDs are added to this list on the binder thread when processing requestNetwork and similar
+     * IPCs. They are removed from this list on the handler thread, when the callback unregistration
+     * is fully processed. They cannot be unregistered when the unregister IPC is processed because
+     * sometimes requests are unregistered on the handler thread.
+     */
+    @GuardedBy("mBlockedStatusTrackingUids")
+    private final SparseIntArray mBlockedStatusTrackingUids = new SparseIntArray();
+
+    /**
+     * Stale copy of UID blocked reasons. This is used to send onBlockedStatusChanged
+     * callbacks. This is only used on the handler thread, so it does not require a lock.
+     * On U-, the blocked reasons come from NPMS.
+     * On V+, the blocked reasons come from the BPF map contents and only maintains blocked reasons
+     * of uids that register network callbacks.
      */
     private final SparseIntArray mUidBlockedReasons = new SparseIntArray();
 
@@ -545,6 +592,8 @@
      * default network for each app.
      * Order ints passed to netd must be in the 0~999 range. Larger values code for
      * a lower priority, see {@link NativeUidRangeConfig}.
+     * Note that only the highest priority preference is applied if the uid is the target of
+     * multiple preferences.
      *
      * Requests that don't code for a per-app preference use PREFERENCE_ORDER_INVALID.
      * The default request uses PREFERENCE_ORDER_DEFAULT.
@@ -779,11 +828,10 @@
     private static final int EVENT_SET_PROFILE_NETWORK_PREFERENCE = 50;
 
     /**
-     * Event to specify that reasons for why an uid is blocked changed.
-     * arg1 = uid
-     * arg2 = blockedReasons
+     * Event to update blocked reasons for uids.
+     * obj = List of Pair(uid, blockedReasons)
      */
-    private static final int EVENT_UID_BLOCKED_REASON_CHANGED = 51;
+    private static final int EVENT_BLOCKED_REASONS_CHANGED = 51;
 
     /**
      * Event to register a new network offer
@@ -844,9 +892,16 @@
     private static final int EVENT_UID_FROZEN_STATE_CHANGED = 61;
 
     /**
-     * Event to inform the ConnectivityService handler when a uid has lost carrier privileges.
+     * Event to update firewall socket destroy reasons for uids.
+     * obj = List of Pair(uid, socketDestroyReasons)
      */
-    private static final int EVENT_UID_CARRIER_PRIVILEGES_LOST = 62;
+    private static final int EVENT_UPDATE_FIREWALL_DESTROY_SOCKET_REASONS = 62;
+
+    /**
+     * Event to clear firewall socket destroy reasons for all uids.
+     * arg1 = socketDestroyReason
+     */
+    private static final int EVENT_CLEAR_FIREWALL_DESTROY_SOCKET_REASONS = 63;
 
     /**
      * Argument for {@link #EVENT_PROVISIONING_NOTIFICATION} to indicate that the notification
@@ -992,14 +1047,22 @@
     // Flag to enable the feature of closing frozen app sockets.
     private final boolean mDestroyFrozenSockets;
 
-    // Flag to optimize closing frozen app sockets by waiting for the cellular modem to wake up.
-    private final boolean mDelayDestroyFrozenSockets;
+    // Flag to optimize closing app sockets by waiting for the cellular modem to wake up.
+    private final boolean mDelayDestroySockets;
 
     // Flag to allow SysUI to receive connectivity reports for wifi picker UI.
     private final boolean mAllowSysUiConnectivityReports;
 
     // Uids that ConnectivityService is pending to close sockets of.
-    private final Set<Integer> mPendingFrozenUids = new ArraySet<>();
+    // Key is uid and value is reasons of socket destroy
+    private final SparseIntArray mDestroySocketPendingUids = new SparseIntArray();
+
+    private static final int DESTROY_SOCKET_REASON_NONE = 0;
+    private static final int DESTROY_SOCKET_REASON_FROZEN = 1 << 0;
+    private static final int DESTROY_SOCKET_REASON_FIREWALL_BACKGROUND = 1 << 1;
+
+    // Flag to drop packets to VPN addresses ingressing via non-VPN interfaces.
+    private final boolean mIngressToVpnAddressFiltering;
 
     /**
      * Implements support for the legacy "one network per network type" model.
@@ -1288,14 +1351,6 @@
     }
     private final LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(this);
 
-    @VisibleForTesting
-    void onCarrierPrivilegesLost(Integer uid, Integer subId) {
-        if (mRequestRestrictedWifiEnabled) {
-            mHandler.sendMessage(mHandler.obtainMessage(
-                    EVENT_UID_CARRIER_PRIVILEGES_LOST, uid, subId));
-        }
-    }
-
     final LocalPriorityDump mPriorityDumper = new LocalPriorityDump();
     /**
      * Helper class which parses out priority arguments and dumps sections according to their
@@ -1517,10 +1572,11 @@
                 @NonNull final Context context,
                 @NonNull final TelephonyManager tm,
                 boolean requestRestrictedWifiEnabled,
-                @NonNull BiConsumer<Integer, Integer> listener) {
+                @NonNull BiConsumer<Integer, Integer> listener,
+                @NonNull final Handler connectivityServiceHandler) {
             if (isAtLeastT()) {
-                return new CarrierPrivilegeAuthenticator(
-                        context, tm, requestRestrictedWifiEnabled, listener);
+                return new CarrierPrivilegeAuthenticator(context, tm, requestRestrictedWifiEnabled,
+                        listener, connectivityServiceHandler);
             } else {
                 return null;
             }
@@ -1732,7 +1788,7 @@
         mDefaultRequest = new NetworkRequestInfo(
                 Process.myUid(), defaultInternetRequest, null,
                 null /* binder */, NetworkCallback.FLAG_INCLUDE_LOCATION_INFO,
-                null /* attributionTags */);
+                null /* attributionTags */, DECLARED_METHODS_NONE);
         mNetworkRequests.put(defaultInternetRequest, mDefaultRequest);
         mDefaultNetworkRequests.add(mDefaultRequest);
         mNetworkRequestInfoLogs.log("REGISTER " + mDefaultRequest);
@@ -1803,9 +1859,13 @@
         mLocationPermissionChecker = mDeps.makeLocationPermissionChecker(mContext);
         mRequestRestrictedWifiEnabled = mDeps.isAtLeastU()
                 && mDeps.isFeatureEnabled(context, REQUEST_RESTRICTED_WIFI);
+        mBackgroundFirewallChainEnabled = mDeps.isAtLeastV() && mDeps.isFeatureNotChickenedOut(
+                context, ConnectivityFlags.BACKGROUND_FIREWALL_CHAIN);
+        mUseDeclaredMethodsForCallbacksEnabled = mDeps.isFeatureEnabled(context,
+                ConnectivityFlags.USE_DECLARED_METHODS_FOR_CALLBACKS);
         mCarrierPrivilegeAuthenticator = mDeps.makeCarrierPrivilegeAuthenticator(
                 mContext, mTelephonyManager, mRequestRestrictedWifiEnabled,
-                this::onCarrierPrivilegesLost);
+                this::handleUidCarrierPrivilegesLost, mHandler);
 
         if (mDeps.isAtLeastU()
                 && mDeps
@@ -1819,7 +1879,12 @@
         // To ensure uid state is synchronized with Network Policy, register for
         // NetworkPolicyManagerService events must happen prior to NetworkPolicyManagerService
         // reading existing policy from disk.
-        mPolicyManager.registerNetworkPolicyCallback(null, mPolicyCallback);
+        // If shouldTrackUidsForBlockedStatusCallbacks() is true (On V+), ConnectivityService
+        // updates blocked reasons when firewall chain and data saver status is updated based on
+        // bpf map contents instead of receiving callbacks from NPMS
+        if (!shouldTrackUidsForBlockedStatusCallbacks()) {
+            mPolicyManager.registerNetworkPolicyCallback(null, mPolicyCallback);
+        }
 
         final PowerManager powerManager = (PowerManager) context.getSystemService(
                 Context.POWER_SERVICE);
@@ -1950,8 +2015,7 @@
 
         mDestroyFrozenSockets = mDeps.isAtLeastV() || (mDeps.isAtLeastU()
                 && mDeps.isFeatureEnabled(context, KEY_DESTROY_FROZEN_SOCKETS_VERSION));
-        mDelayDestroyFrozenSockets = mDeps.isAtLeastU()
-                && mDeps.isFeatureEnabled(context, DELAY_DESTROY_FROZEN_SOCKETS_VERSION);
+        mDelayDestroySockets = mDeps.isFeatureNotChickenedOut(context, DELAY_DESTROY_SOCKETS);
         mAllowSysUiConnectivityReports = mDeps.isFeatureNotChickenedOut(
                 mContext, ALLOW_SYSUI_CONNECTIVITY_REPORTS);
         if (mDestroyFrozenSockets) {
@@ -1978,10 +2042,8 @@
             activityManager.registerUidFrozenStateChangedCallback(
                     (Runnable r) -> r.run(), frozenStateChangedCallback);
         }
-
-        if (mDeps.isFeatureNotChickenedOut(mContext, LOG_BPF_RC)) {
-            mHandler.post(BpfLoaderRcUtils::checkBpfLoaderRc);
-        }
+        mIngressToVpnAddressFiltering = mDeps.isAtLeastT()
+                && mDeps.isFeatureNotChickenedOut(mContext, INGRESS_TO_VPN_ADDRESS_FILTERING);
     }
 
     /**
@@ -2113,7 +2175,7 @@
             handleRegisterNetworkRequest(new NetworkRequestInfo(
                     Process.myUid(), networkRequest, null /* messenger */, null /* binder */,
                     NetworkCallback.FLAG_INCLUDE_LOCATION_INFO,
-                    null /* attributionTags */));
+                    null /* attributionTags */, DECLARED_METHODS_NONE));
         } else {
             handleReleaseNetworkRequest(networkRequest, Process.SYSTEM_UID,
                     /* callOnUnavailable */ false);
@@ -2229,6 +2291,11 @@
         return nai;
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    private boolean hasInternetPermission(final int uid) {
+        return (mBpfNetMaps.getNetPermForUid(uid) & PERMISSION_INTERNET) != 0;
+    }
+
     /**
      * Check if UID should be blocked from using the specified network.
      */
@@ -2242,7 +2309,17 @@
         final long ident = Binder.clearCallingIdentity();
         try {
             final boolean metered = nc == null ? true : nc.isMetered();
-            return mPolicyManager.isUidNetworkingBlocked(uid, metered);
+            if (mDeps.isAtLeastV()) {
+                final boolean hasInternetPermission = hasInternetPermission(uid);
+                final boolean blockedByUidRules = mBpfNetMaps.isUidNetworkingBlocked(uid, metered);
+                if (mDeps.isChangeEnabled(NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION, uid)) {
+                    return blockedByUidRules || !hasInternetPermission;
+                } else {
+                    return hasInternetPermission && blockedByUidRules;
+                }
+            } else {
+                return mPolicyManager.isUidNetworkingBlocked(uid, metered);
+            }
         } finally {
             Binder.restoreCallingIdentity(ident);
         }
@@ -2320,7 +2397,7 @@
         final int uid = mDeps.getCallingUid();
         final NetworkAgentInfo nai = getNetworkAgentInfoForUid(uid);
         if (nai == null) return null;
-        final NetworkInfo networkInfo = getFilteredNetworkInfo(nai, uid, false);
+        final NetworkInfo networkInfo = getFilteredNetworkInfo(nai, uid, false /* ignoreBlocked */);
         maybeLogBlockedNetworkInfo(networkInfo, uid);
         return networkInfo;
     }
@@ -2611,7 +2688,7 @@
                 // Not the system, so it's an app requesting on its own behalf.
                 type = RequestType.RT_APP.getNumber();
             }
-            countPerType.put(type, countPerType.get(type, 0));
+            countPerType.put(type, countPerType.get(type, 0) + 1);
         }
         for (int i = countPerType.size() - 1; i >= 0; --i) {
             final RequestCountForType.Builder r = RequestCountForType.newBuilder();
@@ -2769,6 +2846,7 @@
 
     private boolean canSeeAllowedUids(final int pid, final int uid, final int netOwnerUid) {
         return Process.SYSTEM_UID == uid
+                || netOwnerUid == uid
                 || hasAnyPermissionOf(mContext, pid, uid,
                         android.Manifest.permission.NETWORK_FACTORY);
     }
@@ -2796,7 +2874,6 @@
         }
         if (!canSeeAllowedUids(callerPid, callerUid, newNc.getOwnerUid())) {
             newNc.setAllowedUids(new ArraySet<>());
-            newNc.setSubscriptionIds(Collections.emptySet());
         }
         redactUnderlyingNetworksForCapabilities(newNc, callerPid, callerUid);
 
@@ -3024,6 +3101,23 @@
         }
     }
 
+    private void maybeDisableLocalNetworkMatching(NetworkCapabilities nc, int callingUid) {
+        if (mDeps.isChangeEnabled(ENABLE_MATCH_LOCAL_NETWORK, callingUid)) {
+            return;
+        }
+        // If NET_CAPABILITY_LOCAL_NETWORK is not added to capability, request should not be
+        // satisfied by local networks.
+        if (!nc.hasCapability(NET_CAPABILITY_LOCAL_NETWORK)) {
+            nc.addForbiddenCapability(NET_CAPABILITY_LOCAL_NETWORK);
+        }
+    }
+
+    private void restrictRequestNetworkCapabilitiesForCaller(NetworkCapabilities nc,
+            int callingUid, String callerPackageName) {
+        restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callerPackageName);
+        maybeDisableLocalNetworkMatching(nc, callingUid);
+    }
+
     @Override
     public @RestrictBackgroundStatus int getRestrictBackgroundStatusByCaller() {
         enforceAccessPermission();
@@ -3277,14 +3371,38 @@
     private final NetworkPolicyCallback mPolicyCallback = new NetworkPolicyCallback() {
         @Override
         public void onUidBlockedReasonChanged(int uid, @BlockedReason int blockedReasons) {
-            mHandler.sendMessage(mHandler.obtainMessage(EVENT_UID_BLOCKED_REASON_CHANGED,
-                    uid, blockedReasons));
+            if (shouldTrackUidsForBlockedStatusCallbacks()) {
+                Log.wtf(TAG, "Received unexpected NetworkPolicy callback");
+                return;
+            }
+            mHandler.sendMessage(mHandler.obtainMessage(
+                    EVENT_BLOCKED_REASONS_CHANGED,
+                    List.of(new Pair<>(uid, blockedReasons))));
         }
     };
 
-    private void handleUidBlockedReasonChanged(int uid, @BlockedReason int blockedReasons) {
-        maybeNotifyNetworkBlockedForNewState(uid, blockedReasons);
-        setUidBlockedReasons(uid, blockedReasons);
+    private boolean shouldTrackUidsForBlockedStatusCallbacks() {
+        return mDeps.isAtLeastV();
+    }
+
+    @VisibleForTesting
+    void handleBlockedReasonsChanged(List<Pair<Integer, Integer>> reasonsList) {
+        for (Pair<Integer, Integer> reasons: reasonsList) {
+            final int uid = reasons.first;
+            final int blockedReasons = reasons.second;
+            if (shouldTrackUidsForBlockedStatusCallbacks()) {
+                synchronized (mBlockedStatusTrackingUids) {
+                    if (mBlockedStatusTrackingUids.get(uid) == 0) {
+                        // This uid is not tracked anymore.
+                        // This can happen if the network request is unregistered while
+                        // EVENT_BLOCKED_REASONS_CHANGED is posted but not processed yet.
+                        continue;
+                    }
+                }
+            }
+            maybeNotifyNetworkBlockedForNewState(uid, blockedReasons);
+            setUidBlockedReasons(uid, blockedReasons);
+        }
     }
 
     static final class UidFrozenStateChangedArgs {
@@ -3315,44 +3433,92 @@
         return !mNetworkActivityTracker.isDefaultNetworkActive();
     }
 
-    private void handleFrozenUids(int[] uids, int[] frozenStates) {
-        final ArraySet<Integer> ownerUids = new ArraySet<>();
+    private boolean shouldTrackFirewallDestroySocketReasons() {
+        return mDeps.isAtLeastV();
+    }
 
-        for (int i = 0; i < uids.length; i++) {
-            if (frozenStates[i] == UID_FROZEN_STATE_FROZEN) {
-                ownerUids.add(uids[i]);
-            } else {
-                mPendingFrozenUids.remove(uids[i]);
-            }
-        }
-
-        if (ownerUids.isEmpty()) {
-            return;
-        }
-
-        if (mDelayDestroyFrozenSockets && isCellNetworkIdle()) {
-            // Delay closing sockets to avoid waking the cell modem up.
-            // Wi-Fi network state is not considered since waking Wi-Fi modem up is much cheaper
-            // than waking cell modem up.
-            mPendingFrozenUids.addAll(ownerUids);
+    private void updateDestroySocketReasons(final int uid, final int reason,
+            final boolean addReason) {
+        final int destroyReasons = mDestroySocketPendingUids.get(uid, DESTROY_SOCKET_REASON_NONE);
+        if (addReason) {
+            mDestroySocketPendingUids.put(uid, destroyReasons | reason);
         } else {
-            try {
-                mDeps.destroyLiveTcpSocketsByOwnerUids(ownerUids);
-            } catch (SocketException | InterruptedIOException | ErrnoException e) {
-                loge("Exception in socket destroy: " + e);
+            final int newDestroyReasons = destroyReasons & ~reason;
+            if (newDestroyReasons == DESTROY_SOCKET_REASON_NONE) {
+                mDestroySocketPendingUids.delete(uid);
+            } else {
+                mDestroySocketPendingUids.put(uid, newDestroyReasons);
             }
         }
     }
 
-    private void closePendingFrozenSockets() {
+    private void handleFrozenUids(int[] uids, int[] frozenStates) {
+        ensureRunningOnConnectivityServiceThread();
+        for (int i = 0; i < uids.length; i++) {
+            final int uid = uids[i];
+            final boolean addReason = frozenStates[i] == UID_FROZEN_STATE_FROZEN;
+            updateDestroySocketReasons(uid, DESTROY_SOCKET_REASON_FROZEN, addReason);
+        }
+
+        if (!mDelayDestroySockets || !isCellNetworkIdle()) {
+            destroyPendingSockets();
+        }
+    }
+
+    private void handleUpdateFirewallDestroySocketReasons(
+            List<Pair<Integer, Integer>> reasonsList) {
+        if (!shouldTrackFirewallDestroySocketReasons()) {
+            Log.wtf(TAG, "handleUpdateFirewallDestroySocketReasons is called unexpectedly");
+            return;
+        }
         ensureRunningOnConnectivityServiceThread();
 
-        try {
-            mDeps.destroyLiveTcpSocketsByOwnerUids(mPendingFrozenUids);
-        } catch (SocketException | InterruptedIOException | ErrnoException e) {
-            loge("Failed to close pending frozen app sockets: " + e);
+        for (Pair<Integer, Integer> uidSocketDestroyReasons: reasonsList) {
+            final int uid = uidSocketDestroyReasons.first;
+            final int reasons = uidSocketDestroyReasons.second;
+            final boolean destroyByFirewallBackground =
+                    (reasons & DESTROY_SOCKET_REASON_FIREWALL_BACKGROUND)
+                            != DESTROY_SOCKET_REASON_NONE;
+            updateDestroySocketReasons(uid, DESTROY_SOCKET_REASON_FIREWALL_BACKGROUND,
+                    destroyByFirewallBackground);
         }
-        mPendingFrozenUids.clear();
+
+        if (!mDelayDestroySockets || !isCellNetworkIdle()) {
+            destroyPendingSockets();
+        }
+    }
+
+    private void handleClearFirewallDestroySocketReasons(final int reason) {
+        if (!shouldTrackFirewallDestroySocketReasons()) {
+            Log.wtf(TAG, "handleClearFirewallDestroySocketReasons is called uexpectedly");
+            return;
+        }
+        ensureRunningOnConnectivityServiceThread();
+
+        // Unset reason from all pending uids
+        for (int i = mDestroySocketPendingUids.size() - 1; i >= 0; i--) {
+            final int uid = mDestroySocketPendingUids.keyAt(i);
+            updateDestroySocketReasons(uid, reason, false /* addReason */);
+        }
+    }
+
+    private void destroyPendingSockets() {
+        ensureRunningOnConnectivityServiceThread();
+        if (mDestroySocketPendingUids.size() == 0) {
+            return;
+        }
+
+        Set<Integer> uids = new ArraySet<>();
+        for (int i = 0; i < mDestroySocketPendingUids.size(); i++) {
+            uids.add(mDestroySocketPendingUids.keyAt(i));
+        }
+
+        try {
+            mDeps.destroyLiveTcpSocketsByOwnerUids(uids);
+        } catch (SocketException | InterruptedIOException | ErrnoException e) {
+            loge("Failed to destroy sockets: " + e);
+        }
+        mDestroySocketPendingUids.clear();
     }
 
     private void handleReportNetworkActivity(final NetworkActivityParams params) {
@@ -3369,43 +3535,46 @@
             isCellNetworkActivity = params.label == TRANSPORT_CELLULAR;
         }
 
-        if (mDelayDestroyFrozenSockets
-                && params.isActive
-                && isCellNetworkActivity
-                && !mPendingFrozenUids.isEmpty()) {
-            closePendingFrozenSockets();
+        if (mDelayDestroySockets && params.isActive && isCellNetworkActivity) {
+            destroyPendingSockets();
         }
     }
 
     /**
-     * If the cellular network is no longer the default network, close pending frozen sockets.
+     * If the cellular network is no longer the default network, destroy pending sockets.
      *
      * @param newNetwork new default network
      * @param oldNetwork old default network
      */
-    private void maybeClosePendingFrozenSockets(NetworkAgentInfo newNetwork,
+    private void maybeDestroyPendingSockets(NetworkAgentInfo newNetwork,
             NetworkAgentInfo oldNetwork) {
         final boolean isOldNetworkCellular = oldNetwork != null
                 && oldNetwork.networkCapabilities.hasTransport(TRANSPORT_CELLULAR);
         final boolean isNewNetworkCellular = newNetwork != null
                 && newNetwork.networkCapabilities.hasTransport(TRANSPORT_CELLULAR);
 
-        if (isOldNetworkCellular
-                && !isNewNetworkCellular
-                && !mPendingFrozenUids.isEmpty()) {
-            closePendingFrozenSockets();
+        if (isOldNetworkCellular && !isNewNetworkCellular) {
+            destroyPendingSockets();
         }
     }
 
-    private void dumpCloseFrozenAppSockets(IndentingPrintWriter pw) {
-        pw.println("CloseFrozenAppSockets:");
+    private void dumpDestroySockets(IndentingPrintWriter pw) {
+        pw.println("DestroySockets:");
         pw.increaseIndent();
         pw.print("mDestroyFrozenSockets="); pw.println(mDestroyFrozenSockets);
-        pw.print("mDelayDestroyFrozenSockets="); pw.println(mDelayDestroyFrozenSockets);
-        pw.print("mPendingFrozenUids="); pw.println(mPendingFrozenUids);
+        pw.print("mDelayDestroySockets="); pw.println(mDelayDestroySockets);
+        pw.print("mDestroySocketPendingUids:");
+        pw.increaseIndent();
+        for (int i = 0; i < mDestroySocketPendingUids.size(); i++) {
+            final int uid = mDestroySocketPendingUids.keyAt(i);
+            final int reasons = mDestroySocketPendingUids.valueAt(i);
+            pw.print(uid + ": reasons=" + reasons);
+        }
+        pw.decreaseIndent();
         pw.decreaseIndent();
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private void dumpBpfProgramStatus(IndentingPrintWriter pw) {
         pw.println("Bpf Program Status:");
         pw.increaseIndent();
@@ -3414,12 +3583,37 @@
             pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_INGRESS));
             pw.print("CGROUP_INET_EGRESS: ");
             pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_EGRESS));
+
             pw.print("CGROUP_INET_SOCK_CREATE: ");
             pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_SOCK_CREATE));
+
             pw.print("CGROUP_INET4_BIND: ");
             pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET4_BIND));
             pw.print("CGROUP_INET6_BIND: ");
             pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET6_BIND));
+
+            pw.print("CGROUP_INET4_CONNECT: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET4_CONNECT));
+            pw.print("CGROUP_INET6_CONNECT: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET6_CONNECT));
+
+            pw.print("CGROUP_UDP4_SENDMSG: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_UDP4_SENDMSG));
+            pw.print("CGROUP_UDP6_SENDMSG: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_UDP6_SENDMSG));
+
+            pw.print("CGROUP_UDP4_RECVMSG: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_UDP4_RECVMSG));
+            pw.print("CGROUP_UDP6_RECVMSG: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_UDP6_RECVMSG));
+
+            pw.print("CGROUP_GETSOCKOPT: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_GETSOCKOPT));
+            pw.print("CGROUP_SETSOCKOPT: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_SETSOCKOPT));
+
+            pw.print("CGROUP_INET_SOCK_RELEASE: ");
+            pw.println(mDeps.getBpfProgramId(BPF_CGROUP_INET_SOCK_RELEASE));
         } catch (IOException e) {
             pw.println("  IOException");
         }
@@ -3428,16 +3622,11 @@
 
     @VisibleForTesting
     static final String KEY_DESTROY_FROZEN_SOCKETS_VERSION = "destroy_frozen_sockets_version";
-    @VisibleForTesting
-    static final String DELAY_DESTROY_FROZEN_SOCKETS_VERSION =
-            "delay_destroy_frozen_sockets_version";
 
     @VisibleForTesting
     public static final String ALLOW_SYSUI_CONNECTIVITY_REPORTS =
             "allow_sysui_connectivity_reports";
 
-    public static final String LOG_BPF_RC = "log_bpf_rc_force_disable";
-
     public static final String ALLOW_SATALLITE_NETWORK_FALLBACK =
             "allow_satallite_network_fallback";
 
@@ -3811,6 +4000,10 @@
             mSatelliteAccessController.start();
         }
 
+        if (mCarrierPrivilegeAuthenticator != null) {
+            mCarrierPrivilegeAuthenticator.start();
+        }
+
         // On T+ devices, register callback for statsd to pull NETWORK_BPF_MAP_INFO atom
         if (mDeps.isAtLeastT()) {
             mBpfNetMaps.setPullAtomCallback(mContext);
@@ -3989,6 +4182,12 @@
             boolean verbose = !CollectionUtils.contains(args, SHORT_ARG);
             dumpTrafficController(pw, fd, verbose);
             return;
+        } else if (CollectionUtils.contains(args, CLATEGRESS4RAWBPFMAP_ARG)) {
+            dumpClatBpfRawMap(pw, true /* isEgress4Map */);
+            return;
+        } else if (CollectionUtils.contains(args, CLATINGRESS6RAWBPFMAP_ARG)) {
+            dumpClatBpfRawMap(pw, false /* isEgress4Map */);
+            return;
         }
 
         pw.println("NetworkProviders for:");
@@ -4062,10 +4261,21 @@
         dumpAvoidBadWifiSettings(pw);
 
         pw.println();
-        dumpCloseFrozenAppSockets(pw);
+        dumpDestroySockets(pw);
 
-        pw.println();
-        dumpBpfProgramStatus(pw);
+        if (mDeps.isAtLeastT()) {
+            // R: https://android.googlesource.com/platform/system/core/+/refs/heads/android11-release/rootdir/init.rc
+            //   shows /dev/cg2_bpf
+            // S: https://android.googlesource.com/platform/system/core/+/refs/heads/android12-release/rootdir/init.rc
+            //   does not
+            // Thus cgroups are mounted at /dev/cg2_bpf on R and not on /sys/fs/cgroup
+            // so the following won't work (on R) anyway.
+            // The /sys/fs/cgroup path is only actually enforced/required starting with U,
+            // but it is very likely to already be the case (though not guaranteed) on T.
+            // I'm not at all sure about S - let's just skip it to get rid of lint warnings.
+            pw.println();
+            dumpBpfProgramStatus(pw);
+        }
 
         if (null != mCarrierPrivilegeAuthenticator) {
             pw.println();
@@ -4136,6 +4346,9 @@
         pw.println();
         pw.println("Multicast routing supported: " +
                 (mMulticastRoutingCoordinatorService != null));
+
+        pw.println();
+        pw.println("Background firewall chain enabled: " + mBackgroundFirewallChainEnabled);
     }
 
     private void dumpNetworks(IndentingPrintWriter pw) {
@@ -4245,6 +4458,15 @@
         }
     }
 
+    private void dumpClatBpfRawMap(IndentingPrintWriter pw, boolean isEgress4Map) {
+        for (NetworkAgentInfo nai : networksSortedById()) {
+            if (nai.clatd != null) {
+                nai.clatd.dumpRawBpfMap(pw, isEgress4Map);
+                break;
+            }
+        }
+    }
+
     private void dumpAllRequestInfoLogsToLogcat() {
         try (PrintWriter logPw = new PrintWriter(new Writer() {
             @Override
@@ -4622,7 +4844,15 @@
                 final String logMsg = !TextUtils.isEmpty(redirectUrl)
                         ? " with redirect to " + redirectUrl
                         : "";
-                log(nai.toShortString() + " validation " + (valid ? "passed" : "failed") + logMsg);
+                final String statusMsg;
+                if (valid) {
+                    statusMsg = "passed";
+                } else if (!TextUtils.isEmpty(redirectUrl)) {
+                    statusMsg = "detected a portal";
+                } else {
+                    statusMsg = "failed";
+                }
+                log(nai.toShortString() + " validation " + statusMsg + logMsg);
             }
             if (valid != wasValidated) {
                 final FullScore oldScore = nai.getScore();
@@ -5172,7 +5402,7 @@
 
                 if (mDefaultRequest == nri) {
                     mNetworkActivityTracker.updateDefaultNetwork(null /* newNetwork */, nai);
-                    maybeClosePendingFrozenSockets(null /* newNetwork */, nai);
+                    maybeDestroyPendingSockets(null /* newNetwork */, nai);
                     ensureNetworkTransitionWakelock(nai.toShortString());
                 }
             }
@@ -5332,6 +5562,7 @@
         // was is being disconnected the callbacks have already been sent, and if it is being
         // destroyed pending replacement they will be sent when it is disconnected.
         maybeDisableForwardRulesForDisconnectingNai(nai, false /* sendCallbacks */);
+        updateIngressToVpnAddressFiltering(null, nai.linkProperties, nai);
         try {
             mNetd.networkDestroy(nai.network.getNetId());
         } catch (RemoteException | ServiceSpecificException e) {
@@ -5448,6 +5679,12 @@
                 // If there is an active request, then for sure there is a satisfier.
                 nri.getSatisfier().addRequest(activeRequest);
             }
+
+            if (shouldTrackUidsForBlockedStatusCallbacks()
+                    && isAppRequest(nri)
+                    && !nri.mUidTrackedForBlockedStatus) {
+                Log.wtf(TAG, "Registered nri is not tracked for sending blocked status: " + nri);
+            }
         }
 
         if (mFlags.noRematchAllRequestsOnRegister()) {
@@ -5647,6 +5884,11 @@
     }
 
     private void handleRemoveNetworkRequest(@NonNull final NetworkRequestInfo nri) {
+        handleRemoveNetworkRequest(nri, true /* untrackUids */);
+    }
+
+    private void handleRemoveNetworkRequest(@NonNull final NetworkRequestInfo nri,
+            final boolean untrackUids) {
         ensureRunningOnConnectivityServiceThread();
         for (final NetworkRequest req : nri.mRequests) {
             if (null == mNetworkRequests.remove(req)) {
@@ -5681,7 +5923,9 @@
             }
         }
 
-        nri.mPerUidCounter.decrementCount(nri.mUid);
+        if (untrackUids) {
+            maybeUntrackUidAndClearBlockedReasons(nri);
+        }
         mNetworkRequestInfoLogs.log("RELEASE " + nri);
         checkNrisConsistency(nri);
 
@@ -5703,12 +5947,17 @@
     }
 
     private void handleRemoveNetworkRequests(@NonNull final Set<NetworkRequestInfo> nris) {
+        handleRemoveNetworkRequests(nris, true /* untrackUids */);
+    }
+
+    private void handleRemoveNetworkRequests(@NonNull final Set<NetworkRequestInfo> nris,
+            final boolean untrackUids) {
         for (final NetworkRequestInfo nri : nris) {
             if (mDefaultRequest == nri) {
                 // Make sure we never remove the default request.
                 continue;
             }
-            handleRemoveNetworkRequest(nri);
+            handleRemoveNetworkRequest(nri, untrackUids);
         }
     }
 
@@ -6009,7 +6258,15 @@
             if (nm == null) return;
 
             if (request == CaptivePortal.APP_REQUEST_REEVALUATION_REQUIRED) {
-                enforceNetworkStackPermission(mContext);
+                // This enforceNetworkStackPermission() should be adopted to check
+                // the required permission but this may be break OEM captive portal
+                // apps. Simply ignore the request if the caller does not have
+                // permission.
+                if (!hasNetworkStackPermission()) {
+                    Log.e(TAG, "Calling appRequest() without proper permission. Skip");
+                    return;
+                }
+
                 nm.forceReevaluation(mDeps.getCallingUid());
             }
         }
@@ -6440,8 +6697,8 @@
                     handlePrivateDnsValidationUpdate(
                             (PrivateDnsValidationUpdate) msg.obj);
                     break;
-                case EVENT_UID_BLOCKED_REASON_CHANGED:
-                    handleUidBlockedReasonChanged(msg.arg1, msg.arg2);
+                case EVENT_BLOCKED_REASONS_CHANGED:
+                    handleBlockedReasonsChanged((List) msg.obj);
                     break;
                 case EVENT_SET_REQUIRE_VPN_FOR_UIDS:
                     handleSetRequireVpnForUids(toBool(msg.arg1), (UidRange[]) msg.obj);
@@ -6490,8 +6747,11 @@
                     UidFrozenStateChangedArgs args = (UidFrozenStateChangedArgs) msg.obj;
                     handleFrozenUids(args.mUids, args.mFrozenStates);
                     break;
-                case EVENT_UID_CARRIER_PRIVILEGES_LOST:
-                    handleUidCarrierPrivilegesLost(msg.arg1, msg.arg2);
+                case EVENT_UPDATE_FIREWALL_DESTROY_SOCKET_REASONS:
+                    handleUpdateFirewallDestroySocketReasons((List) msg.obj);
+                    break;
+                case EVENT_CLEAR_FIREWALL_DESTROY_SOCKET_REASONS:
+                    handleClearFirewallDestroySocketReasons(msg.arg1);
                     break;
             }
         }
@@ -7309,9 +7569,16 @@
         // maximum limit of registered callbacks per UID.
         final int mAsUid;
 
+        // Flag to indicate that uid of this nri is tracked for sending blocked status callbacks.
+        // It is always true on V+ if mMessenger != null. As such, it's not strictly necessary.
+        // it's used only as a safeguard to avoid double counting or leaking.
+        boolean mUidTrackedForBlockedStatus;
+
         // Preference order of this request.
         final int mPreferenceOrder;
 
+        final int mDeclaredMethodsFlags;
+
         // In order to preserve the mapping of NetworkRequest-to-callback when apps register
         // callbacks using a returned NetworkRequest, the original NetworkRequest needs to be
         // maintained for keying off of. This is only a concern when the original nri
@@ -7358,7 +7625,6 @@
             mUid = mDeps.getCallingUid();
             mAsUid = asUid;
             mPerUidCounter = getRequestCounter(this);
-            mPerUidCounter.incrementCountOrThrow(mUid);
             /**
              * Location sensitive data not included in pending intent. Only included in
              * {@link NetworkCallback}.
@@ -7366,21 +7632,22 @@
             mCallbackFlags = NetworkCallback.FLAG_NONE;
             mCallingAttributionTag = callingAttributionTag;
             mPreferenceOrder = preferenceOrder;
+            mDeclaredMethodsFlags = DECLARED_METHODS_NONE;
         }
 
         NetworkRequestInfo(int asUid, @NonNull final NetworkRequest r, @Nullable final Messenger m,
                 @Nullable final IBinder binder,
                 @NetworkCallback.Flag int callbackFlags,
-                @Nullable String callingAttributionTag) {
+                @Nullable String callingAttributionTag, int declaredMethodsFlags) {
             this(asUid, Collections.singletonList(r), r, m, binder, callbackFlags,
-                    callingAttributionTag);
+                    callingAttributionTag, declaredMethodsFlags);
         }
 
         NetworkRequestInfo(int asUid, @NonNull final List<NetworkRequest> r,
                 @NonNull final NetworkRequest requestForCallback, @Nullable final Messenger m,
                 @Nullable final IBinder binder,
                 @NetworkCallback.Flag int callbackFlags,
-                @Nullable String callingAttributionTag) {
+                @Nullable String callingAttributionTag, int declaredMethodsFlags) {
             super();
             ensureAllNetworkRequestsHaveType(r);
             mRequests = initializeRequests(r);
@@ -7392,10 +7659,10 @@
             mAsUid = asUid;
             mPendingIntent = null;
             mPerUidCounter = getRequestCounter(this);
-            mPerUidCounter.incrementCountOrThrow(mUid);
             mCallbackFlags = callbackFlags;
             mCallingAttributionTag = callingAttributionTag;
             mPreferenceOrder = PREFERENCE_ORDER_INVALID;
+            mDeclaredMethodsFlags = declaredMethodsFlags;
             linkDeathRecipient();
         }
 
@@ -7432,10 +7699,11 @@
             mAsUid = nri.mAsUid;
             mPendingIntent = nri.mPendingIntent;
             mPerUidCounter = nri.mPerUidCounter;
-            mPerUidCounter.incrementCountOrThrow(mUid);
             mCallbackFlags = nri.mCallbackFlags;
             mCallingAttributionTag = nri.mCallingAttributionTag;
+            mUidTrackedForBlockedStatus = nri.mUidTrackedForBlockedStatus;
             mPreferenceOrder = PREFERENCE_ORDER_INVALID;
+            mDeclaredMethodsFlags = nri.mDeclaredMethodsFlags;
             linkDeathRecipient();
         }
 
@@ -7522,7 +7790,9 @@
                     + " " + mRequests
                     + (mPendingIntent == null ? "" : " to trigger " + mPendingIntent)
                     + " callback flags: " + mCallbackFlags
-                    + " order: " + mPreferenceOrder;
+                    + " order: " + mPreferenceOrder
+                    + " isUidTracked: " + mUidTrackedForBlockedStatus
+                    + " declaredMethods: 0x" + Integer.toHexString(mDeclaredMethodsFlags);
         }
     }
 
@@ -7572,15 +7842,6 @@
                     "Insufficient permissions to request a specific signal strength");
         }
         mAppOpsManager.checkPackage(callerUid, callerPackageName);
-
-        if (nc.getSubscriptionIds().isEmpty()) {
-            return;
-        }
-        if (mRequestRestrictedWifiEnabled
-                && canRequestRestrictedNetworkDueToCarrierPrivileges(nc, callerUid)) {
-            return;
-        }
-        enforceNetworkFactoryPermission();
     }
 
     private int[] getSignalStrengthThresholds(@NonNull final NetworkAgentInfo nai) {
@@ -7669,7 +7930,21 @@
     public NetworkRequest requestNetwork(int asUid, NetworkCapabilities networkCapabilities,
             int reqTypeInt, Messenger messenger, int timeoutMs, final IBinder binder,
             int legacyType, int callbackFlags, @NonNull String callingPackageName,
-            @Nullable String callingAttributionTag) {
+            @Nullable String callingAttributionTag, int declaredMethodsFlag) {
+        if (declaredMethodsFlag == 0) {
+            // This could happen if raw binder calls are used to call the previous overload of
+            // requestNetwork, as missing int arguments in a binder call end up as 0
+            // (Parcel.readInt returns 0 at the end of a parcel). Such raw calls this would be
+            // really unexpected bad behavior from the caller though.
+            // TODO: remove after verifying this does not happen. This could allow enabling the
+            // optimization for callbacks that do not override any method (right now they use
+            // DECLARED_METHODS_ALL), if it is OK to break NetworkCallbacks created using
+            // dexmaker-mockito-inline and either spy() or MockSettings.useConstructor (see
+            // comment in ConnectivityManager which sets the flag to DECLARED_METHODS_ALL).
+            Log.wtf(TAG, "requestNetwork called without declaredMethodsFlag from "
+                    + callingPackageName);
+            declaredMethodsFlag = DECLARED_METHODS_ALL;
+        }
         if (legacyType != TYPE_NONE && !hasNetworkStackPermission()) {
             if (isTargetSdkAtleast(Build.VERSION_CODES.M, mDeps.getCallingUid(),
                     callingPackageName)) {
@@ -7714,10 +7989,12 @@
                 //  the state of the app when the request is filed, but we never change the
                 //  request if the app changes network state. http://b/29964605
                 enforceMeteredApnPolicy(networkCapabilities);
+                maybeDisableLocalNetworkMatching(networkCapabilities, callingUid);
                 break;
             case LISTEN_FOR_BEST:
                 enforceAccessPermission();
                 networkCapabilities = new NetworkCapabilities(networkCapabilities);
+                maybeDisableLocalNetworkMatching(networkCapabilities, callingUid);
                 break;
             default:
                 throw new IllegalArgumentException("Unsupported request type " + reqType);
@@ -7744,13 +8021,6 @@
             throw new IllegalArgumentException("Bad timeout specified");
         }
 
-        final NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType,
-                nextNetworkRequestId(), reqType);
-        final NetworkRequestInfo nri = getNriToRegister(
-                asUid, networkRequest, messenger, binder, callbackFlags,
-                callingAttributionTag);
-        if (DBG) log("requestNetwork for " + nri);
-
         // For TRACK_SYSTEM_DEFAULT callbacks, the capabilities have been modified since they were
         // copied from the default request above. (This is necessary to ensure, for example, that
         // the callback does not leak sensitive information to unprivileged apps.) Check that the
@@ -7762,7 +8032,13 @@
                     + networkCapabilities + " vs. " + defaultNc);
         }
 
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri));
+        final NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType,
+                nextNetworkRequestId(), reqType);
+        final NetworkRequestInfo nri = getNriToRegister(
+                asUid, networkRequest, messenger, binder, callbackFlags,
+                callingAttributionTag, declaredMethodsFlag);
+        if (DBG) log("requestNetwork for " + nri);
+        trackUidAndRegisterNetworkRequest(EVENT_REGISTER_NETWORK_REQUEST, nri);
         if (timeoutMs > 0) {
             mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST,
                     nri), timeoutMs);
@@ -7786,7 +8062,7 @@
     private NetworkRequestInfo getNriToRegister(final int asUid, @NonNull final NetworkRequest nr,
             @Nullable final Messenger msgr, @Nullable final IBinder binder,
             @NetworkCallback.Flag int callbackFlags,
-            @Nullable String callingAttributionTag) {
+            @Nullable String callingAttributionTag, int declaredMethodsFlags) {
         final List<NetworkRequest> requests;
         if (NetworkRequest.Type.TRACK_DEFAULT == nr.type) {
             requests = copyDefaultNetworkRequestsForUid(
@@ -7795,7 +8071,8 @@
             requests = Collections.singletonList(nr);
         }
         return new NetworkRequestInfo(
-                asUid, requests, nr, msgr, binder, callbackFlags, callingAttributionTag);
+                asUid, requests, nr, msgr, binder, callbackFlags, callingAttributionTag,
+                declaredMethodsFlags);
     }
 
     private boolean shouldCheckCapabilitiesDeclaration(
@@ -7804,7 +8081,7 @@
         final UserHandle user = UserHandle.getUserHandleForUid(callingUid);
         // Only run the check if the change is enabled.
         if (!mDeps.isChangeEnabled(
-                ConnectivityCompatChanges.ENABLE_SELF_CERTIFIED_CAPABILITIES_DECLARATION,
+                ENABLE_SELF_CERTIFIED_CAPABILITIES_DECLARATION,
                 callingPackageName, user)) {
             return false;
         }
@@ -7932,6 +8209,13 @@
             // Policy already enforced.
             return;
         }
+        if (mDeps.isAtLeastV()) {
+            if (mBpfNetMaps.isUidRestrictedOnMeteredNetworks(uid)) {
+                // If UID is restricted, don't allow them to bring up metered APNs.
+                networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED);
+            }
+            return;
+        }
         final long ident = Binder.clearCallingIdentity();
         try {
             if (mPolicyManager.isUidRestrictedOnMeteredNetworks(uid)) {
@@ -7956,16 +8240,15 @@
         ensureRequestableCapabilities(networkCapabilities);
         ensureSufficientPermissionsForRequest(networkCapabilities,
                 Binder.getCallingPid(), callingUid, callingPackageName);
-        restrictRequestUidsForCallerAndSetRequestorInfo(networkCapabilities,
-                callingUid, callingPackageName);
+        restrictRequestNetworkCapabilitiesForCaller(
+                networkCapabilities, callingUid, callingPackageName);
 
         NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE,
                 nextNetworkRequestId(), NetworkRequest.Type.REQUEST);
         NetworkRequestInfo nri = new NetworkRequestInfo(callingUid, networkRequest, operation,
                 callingAttributionTag);
         if (DBG) log("pendingRequest for " + nri);
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT,
-                nri));
+        trackUidAndRegisterNetworkRequest(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, nri);
         return networkRequest;
     }
 
@@ -8004,11 +8287,88 @@
         return true;
     }
 
+    private boolean isAppRequest(NetworkRequestInfo nri) {
+        return nri.mMessenger != null || nri.mPendingIntent != null;
+    }
+
+    private void trackUidAndMaybePostCurrentBlockedReason(final NetworkRequestInfo nri) {
+        if (!isAppRequest(nri)) {
+            Log.wtf(TAG, "trackUidAndMaybePostCurrentBlockedReason is called for non app"
+                    + "request: " + nri);
+            return;
+        }
+        nri.mPerUidCounter.incrementCountOrThrow(nri.mUid);
+
+        // If nri.mMessenger is null, this nri does not have NetworkCallback so ConnectivityService
+        // does not need to send onBlockedStatusChanged callback for this uid and does not need to
+        // track the uid in mBlockedStatusTrackingUids
+        if (!shouldTrackUidsForBlockedStatusCallbacks() || nri.mMessenger == null) {
+            return;
+        }
+        if (nri.mUidTrackedForBlockedStatus) {
+            Log.wtf(TAG, "Nri is already tracked for sending blocked status: " + nri);
+            return;
+        }
+        nri.mUidTrackedForBlockedStatus = true;
+        synchronized (mBlockedStatusTrackingUids) {
+            final int uid = nri.mAsUid;
+            final int count = mBlockedStatusTrackingUids.get(uid, 0);
+            if (count == 0) {
+                mHandler.sendMessage(mHandler.obtainMessage(EVENT_BLOCKED_REASONS_CHANGED,
+                        List.of(new Pair<>(uid, mBpfNetMaps.getUidNetworkingBlockedReasons(uid)))));
+            }
+            mBlockedStatusTrackingUids.put(uid, count + 1);
+        }
+    }
+
+    private void trackUidAndRegisterNetworkRequest(final int event, NetworkRequestInfo nri) {
+        // Post the update of the UID's blocked reasons before posting the message that registers
+        // the callback. This is necessary because if the callback immediately matches a request,
+        // the onBlockedStatusChanged must be called with the correct blocked reasons.
+        // Also, once trackUidAndMaybePostCurrentBlockedReason is called, the register network
+        // request event must be posted, because otherwise the counter for uid will never be
+        // decremented.
+        trackUidAndMaybePostCurrentBlockedReason(nri);
+        mHandler.sendMessage(mHandler.obtainMessage(event, nri));
+    }
+
+    private void maybeUntrackUidAndClearBlockedReasons(final NetworkRequestInfo nri) {
+        if (!isAppRequest(nri)) {
+            // Not an app request.
+            return;
+        }
+        nri.mPerUidCounter.decrementCount(nri.mUid);
+
+        if (!shouldTrackUidsForBlockedStatusCallbacks() || nri.mMessenger == null) {
+            return;
+        }
+        if (!nri.mUidTrackedForBlockedStatus) {
+            Log.wtf(TAG, "Nri is not tracked for sending blocked status: " + nri);
+            return;
+        }
+        nri.mUidTrackedForBlockedStatus = false;
+        synchronized (mBlockedStatusTrackingUids) {
+            final int count = mBlockedStatusTrackingUids.get(nri.mAsUid);
+            if (count > 1) {
+                mBlockedStatusTrackingUids.put(nri.mAsUid, count - 1);
+            } else {
+                mBlockedStatusTrackingUids.delete(nri.mAsUid);
+                mUidBlockedReasons.delete(nri.mAsUid);
+            }
+        }
+    }
+
     @Override
     public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities,
             Messenger messenger, IBinder binder,
             @NetworkCallback.Flag int callbackFlags,
-            @NonNull String callingPackageName, @NonNull String callingAttributionTag) {
+            @NonNull String callingPackageName, @NonNull String callingAttributionTag,
+            int declaredMethodsFlag) {
+        if (declaredMethodsFlag == 0) {
+            Log.wtf(TAG, "listenForNetwork called without declaredMethodsFlag from "
+                    + callingPackageName);
+            declaredMethodsFlag = DECLARED_METHODS_ALL;
+        }
         final int callingUid = mDeps.getCallingUid();
         if (!hasWifiNetworkListenPermission(networkCapabilities)) {
             enforceAccessPermission();
@@ -8017,7 +8377,7 @@
         NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities);
         ensureSufficientPermissionsForRequest(networkCapabilities,
                 Binder.getCallingPid(), callingUid, callingPackageName);
-        restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName);
+        restrictRequestNetworkCapabilitiesForCaller(nc, callingUid, callingPackageName);
         // Apps without the CHANGE_NETWORK_STATE permission can't use background networks, so
         // make all their listens include NET_CAPABILITY_FOREGROUND. That way, they will get
         // onLost and onAvailable callbacks when networks move in and out of the background.
@@ -8030,10 +8390,10 @@
                 NetworkRequest.Type.LISTEN);
         NetworkRequestInfo nri =
                 new NetworkRequestInfo(callingUid, networkRequest, messenger, binder, callbackFlags,
-                        callingAttributionTag);
+                        callingAttributionTag, declaredMethodsFlag);
         if (VDBG) log("listenForNetwork for " + nri);
 
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
+        trackUidAndRegisterNetworkRequest(EVENT_REGISTER_NETWORK_LISTENER, nri);
         return networkRequest;
     }
 
@@ -8050,7 +8410,7 @@
         ensureSufficientPermissionsForRequest(networkCapabilities,
                 Binder.getCallingPid(), callingUid, callingPackageName);
         final NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities);
-        restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName);
+        restrictRequestNetworkCapabilitiesForCaller(nc, callingUid, callingPackageName);
 
         NetworkRequest networkRequest = new NetworkRequest(nc, TYPE_NONE, nextNetworkRequestId(),
                 NetworkRequest.Type.LISTEN);
@@ -8058,8 +8418,7 @@
                 callingAttributionTag);
         if (VDBG) log("pendingListenForNetwork for " + nri);
 
-        mHandler.sendMessage(mHandler.obtainMessage(
-                    EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT, nri));
+        trackUidAndRegisterNetworkRequest(EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT, nri);
     }
 
     /** Returns the next Network provider ID. */
@@ -8681,6 +9040,8 @@
         // new interface (the interface name -> index map becomes initialized)
         updateVpnFiltering(newLp, oldLp, networkAgent);
 
+        updateIngressToVpnAddressFiltering(newLp, oldLp, networkAgent);
+
         updateMtu(newLp, oldLp);
         // TODO - figure out what to do for clat
 //        for (LinkProperties lp : newLp.getStackedLinks()) {
@@ -8972,6 +9333,87 @@
         }
     }
 
+    /**
+     * Returns ingress discard rules to drop packets to VPN addresses ingressing via non-VPN
+     * interfaces.
+     * Ingress discard rule is added to the address iff
+     *   1. The address is not a link local address
+     *   2. The address is used by a single VPN interface and not used by any other
+     *      interfaces even non-VPN ones
+     * This method can be called during network disconnects, when nai has already been removed from
+     * mNetworkAgentInfos.
+     *
+     * @param nai This method generates rules assuming lp of this nai is the lp at the second
+     *            argument.
+     * @param lp  This method generates rules assuming lp of nai at the first argument is this lp.
+     *            Caller passes old lp to generate old rules and new lp to generate new rules.
+     * @return    ingress discard rules. Set of pairs of addresses and interface names
+     */
+    private Set<Pair<InetAddress, String>> generateIngressDiscardRules(
+            @NonNull final NetworkAgentInfo nai, @Nullable final LinkProperties lp) {
+        Set<NetworkAgentInfo> nais = new ArraySet<>(mNetworkAgentInfos);
+        nais.add(nai);
+        // Determine how many networks each IP address is currently configured on.
+        // Ingress rules are added only for IP addresses that are configured on single interface.
+        final Map<InetAddress, Integer> addressOwnerCounts = new ArrayMap<>();
+        for (final NetworkAgentInfo agent : nais) {
+            if (agent.isDestroyed()) {
+                continue;
+            }
+            final LinkProperties agentLp = (nai == agent) ? lp : agent.linkProperties;
+            if (agentLp == null) {
+                continue;
+            }
+            for (final InetAddress addr: agentLp.getAllAddresses()) {
+                addressOwnerCounts.put(addr, addressOwnerCounts.getOrDefault(addr, 0) + 1);
+            }
+        }
+
+        // Iterates all networks instead of only generating rule for nai that was passed in since
+        // lp of the nai change could cause/resolve address collision and result in affecting rule
+        // for different network.
+        final Set<Pair<InetAddress, String>> ingressDiscardRules = new ArraySet<>();
+        for (final NetworkAgentInfo agent : nais) {
+            if (!agent.isVPN() || agent.isDestroyed()) {
+                continue;
+            }
+            final LinkProperties agentLp = (nai == agent) ? lp : agent.linkProperties;
+            if (agentLp == null || agentLp.getInterfaceName() == null) {
+                continue;
+            }
+
+            for (final InetAddress addr: agentLp.getAllAddresses()) {
+                if (addressOwnerCounts.get(addr) == 1 && !addr.isLinkLocalAddress()) {
+                    ingressDiscardRules.add(new Pair<>(addr, agentLp.getInterfaceName()));
+                }
+            }
+        }
+        return ingressDiscardRules;
+    }
+
+    private void updateIngressToVpnAddressFiltering(@Nullable LinkProperties newLp,
+            @Nullable LinkProperties oldLp, @NonNull NetworkAgentInfo nai) {
+        // Having isAtleastT to avoid NewApi linter error (b/303382209)
+        if (!mIngressToVpnAddressFiltering || !mDeps.isAtLeastT()) {
+            return;
+        }
+        final CompareOrUpdateResult<InetAddress, Pair<InetAddress, String>> ruleDiff =
+                new CompareOrUpdateResult<>(
+                        generateIngressDiscardRules(nai, oldLp),
+                        generateIngressDiscardRules(nai, newLp),
+                        (rule) -> rule.first);
+        for (Pair<InetAddress, String> rule: ruleDiff.removed) {
+            mBpfNetMaps.removeIngressDiscardRule(rule.first);
+        }
+        for (Pair<InetAddress, String> rule: ruleDiff.added) {
+            mBpfNetMaps.setIngressDiscardRule(rule.first, rule.second);
+        }
+        // setIngressDiscardRule overrides the existing rule
+        for (Pair<InetAddress, String> rule: ruleDiff.updated) {
+            mBpfNetMaps.setIngressDiscardRule(rule.first, rule.second);
+        }
+    }
+
     private void updateWakeOnLan(@NonNull LinkProperties lp) {
         if (mWolSupportedInterfaces == null) {
             mWolSupportedInterfaces = new ArraySet<>(mResources.get().getStringArray(
@@ -9155,6 +9597,9 @@
     }
 
     private void handleUidCarrierPrivilegesLost(int uid, int subId) {
+        if (!mRequestRestrictedWifiEnabled) {
+            return;
+        }
         ensureRunningOnConnectivityServiceThread();
         // A NetworkRequest needs to be revoked when all the conditions are met
         //   1. It requests restricted network
@@ -9162,7 +9607,7 @@
         //   3. The app doesn't have Carrier Privileges
         //   4. The app doesn't have permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS
         for (final NetworkRequest nr : mNetworkRequests.keySet()) {
-            if ((nr.isRequest() || nr.isListen())
+            if (nr.isRequest()
                     && !nr.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)
                     && nr.getRequestorUid() == uid
                     && getSubscriptionIdFromNetworkCaps(nr.networkCapabilities) == subId
@@ -9387,7 +9832,8 @@
             configBuilder.setUpstreamSelector(nr);
             final NetworkRequestInfo nri = new NetworkRequestInfo(
                     nai.creatorUid, nr, null /* messenger */, null /* binder */,
-                    0 /* callbackFlags */, null /* attributionTag */);
+                    0 /* callbackFlags */, null /* attributionTag */,
+                    DECLARED_METHODS_NONE);
             if (null != oldSatisfier) {
                 // Set the old satisfier in the new NRI so that the rematch will see any changes
                 nri.setSatisfier(oldSatisfier, nr);
@@ -9758,6 +10204,11 @@
             // are Type.LISTEN, but should not have NetworkCallbacks invoked.
             return;
         }
+        if (mUseDeclaredMethodsForCallbacksEnabled
+                && (nri.mDeclaredMethodsFlags & (1 << notificationType)) == 0) {
+            // No need to send the notification as the recipient method is not overridden
+            return;
+        }
         final Bundle bundle = new Bundle();
         // TODO b/177608132: make sure callbacks are indexed by NRIs and not NetworkRequest objects.
         // TODO: check if defensive copies of data is needed.
@@ -9956,7 +10407,7 @@
             mLingerMonitor.noteLingerDefaultNetwork(oldDefaultNetwork, newDefaultNetwork);
         }
         mNetworkActivityTracker.updateDefaultNetwork(newDefaultNetwork, oldDefaultNetwork);
-        maybeClosePendingFrozenSockets(newDefaultNetwork, oldDefaultNetwork);
+        maybeDestroyPendingSockets(newDefaultNetwork, oldDefaultNetwork);
         mProxyTracker.setDefaultProxy(null != newDefaultNetwork
                 ? newDefaultNetwork.linkProperties.getHttpProxy() : null);
         resetHttpProxyForNonDefaultNetwork(oldDefaultNetwork);
@@ -10928,7 +11379,7 @@
         final boolean metered = nai.networkCapabilities.isMetered();
         final boolean vpnBlocked = isUidBlockedByVpn(nri.mAsUid, mVpnBlockedUidRanges);
         callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_AVAILABLE,
-                getBlockedState(blockedReasons, metered, vpnBlocked));
+                getBlockedState(nri.mAsUid, blockedReasons, metered, vpnBlocked));
     }
 
     // Notify the requests on this NAI that the network is now lingered.
@@ -10937,7 +11388,21 @@
         notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING, lingerTime);
     }
 
-    private static int getBlockedState(int reasons, boolean metered, boolean vpnBlocked) {
+    private int getPermissionBlockedState(final int uid, final int reasons) {
+        // Before V, the blocked reasons come from NPMS, and that code already behaves as if the
+        // change was disabled: apps without the internet permission will never be told they are
+        // blocked.
+        if (!mDeps.isAtLeastV()) return reasons;
+
+        if (hasInternetPermission(uid)) return reasons;
+
+        return mDeps.isChangeEnabled(NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION, uid)
+                ? reasons | BLOCKED_REASON_NETWORK_RESTRICTED
+                : BLOCKED_REASON_NONE;
+    }
+
+    private int getBlockedState(int uid, int reasons, boolean metered, boolean vpnBlocked) {
+        reasons = getPermissionBlockedState(uid, reasons);
         if (!metered) reasons &= ~BLOCKED_METERED_REASON_MASK;
         return vpnBlocked
                 ? reasons | BLOCKED_REASON_LOCKDOWN_VPN
@@ -10978,8 +11443,10 @@
                     ? isUidBlockedByVpn(nri.mAsUid, newBlockedUidRanges)
                     : oldVpnBlocked;
 
-            final int oldBlockedState = getBlockedState(blockedReasons, oldMetered, oldVpnBlocked);
-            final int newBlockedState = getBlockedState(blockedReasons, newMetered, newVpnBlocked);
+            final int oldBlockedState = getBlockedState(
+                    nri.mAsUid, blockedReasons, oldMetered, oldVpnBlocked);
+            final int newBlockedState = getBlockedState(
+                    nri.mAsUid, blockedReasons, newMetered, newVpnBlocked);
             if (oldBlockedState != newBlockedState) {
                 callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_BLK_CHANGED,
                         newBlockedState);
@@ -10998,8 +11465,9 @@
             final boolean vpnBlocked = isUidBlockedByVpn(uid, mVpnBlockedUidRanges);
 
             final int oldBlockedState = getBlockedState(
-                    mUidBlockedReasons.get(uid, BLOCKED_REASON_NONE), metered, vpnBlocked);
-            final int newBlockedState = getBlockedState(blockedReasons, metered, vpnBlocked);
+                    uid, mUidBlockedReasons.get(uid, BLOCKED_REASON_NONE), metered, vpnBlocked);
+            final int newBlockedState =
+                    getBlockedState(uid, blockedReasons, metered, vpnBlocked);
             if (oldBlockedState == newBlockedState) {
                 continue;
             }
@@ -11365,6 +11833,10 @@
                         return 0;
                     }
                     case "get-package-networking-enabled": {
+                        if (!mDeps.isAtLeastT()) {
+                            throw new UnsupportedOperationException(
+                                    "This command is not supported on T-");
+                        }
                         final String packageName = getNextArg();
                         final int rule = getPackageFirewallRule(
                                 ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3, packageName);
@@ -11394,6 +11866,10 @@
                         return 0;
                     }
                     case "get-background-networking-enabled-for-uid": {
+                        if (!mDeps.isAtLeastT()) {
+                            throw new UnsupportedOperationException(
+                                    "This command is not supported on T-");
+                        }
                         final Integer uid = parseIntegerArgument(getNextArg());
                         if (null == uid) {
                             onHelp();
@@ -12023,7 +12499,7 @@
         // This NetworkCapabilities is only used for matching to Networks. Clear out its owner uid
         // and administrator uids to be safe.
         final NetworkCapabilities nc = new NetworkCapabilities(request.networkCapabilities);
-        restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName);
+        restrictRequestNetworkCapabilitiesForCaller(nc, callingUid, callingPackageName);
 
         final NetworkRequest requestWithId =
                 new NetworkRequest(
@@ -12035,6 +12511,7 @@
         // handleRegisterConnectivityDiagnosticsCallback(). nri will be cleaned up as part of the
         // callback's binder death.
         final NetworkRequestInfo nri = new NetworkRequestInfo(callingUid, requestWithId);
+        nri.mPerUidCounter.incrementCountOrThrow(nri.mUid);
         final ConnectivityDiagnosticsCallbackInfo cbInfo =
                 new ConnectivityDiagnosticsCallbackInfo(callback, nri, callingPackageName);
 
@@ -12630,8 +13107,8 @@
         if (um.isManagedProfile(profile.getIdentifier())) {
             return true;
         }
-        if (mDeps.isAtLeastT() && dpm.getDeviceOwner() != null) return true;
-        return false;
+
+        return mDeps.isAtLeastT() && dpm.getDeviceOwnerComponentOnAnyUser() != null;
     }
 
     /**
@@ -12896,11 +13373,12 @@
         requests.add(createDefaultInternetRequestForTransport(
                 TYPE_NONE, NetworkRequest.Type.TRACK_DEFAULT));
 
-        // request: restricted Satellite internet
+        // request: Satellite internet, satellite network could be restricted or constrained
         final NetworkCapabilities cap = new NetworkCapabilities.Builder()
                 .addCapability(NET_CAPABILITY_INTERNET)
                 .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                .removeCapability(NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED)
                 .addTransportType(NetworkCapabilities.TRANSPORT_SATELLITE)
                 .build();
         requests.add(createNetworkRequest(NetworkRequest.Type.REQUEST, cap));
@@ -13129,7 +13607,20 @@
         final ArraySet<NetworkRequestInfo> perAppCallbackRequestsToUpdate =
                 getPerAppCallbackRequestsToUpdate();
         final ArraySet<NetworkRequestInfo> nrisToRegister = new ArraySet<>(nris);
-        handleRemoveNetworkRequests(perAppCallbackRequestsToUpdate);
+        // This method does not need to modify perUidCounter and mBlockedStatusTrackingUids because:
+        // - |nris| only contains per-app network requests created by ConnectivityService which
+        //    are internal requests and have no messenger and are not associated with any callbacks,
+        //    and so do not need to be tracked in perUidCounter and mBlockedStatusTrackingUids.
+        // - The requests in perAppCallbackRequestsToUpdate are removed, modified, and re-added,
+        //   but the same number of requests is removed and re-added, and none of the requests
+        //   changes mUid and mAsUid, so the perUidCounter and mBlockedStatusTrackingUids before
+        //   and after this method remains the same. Re-adding the requests does not modify
+        //   perUidCounter and mBlockedStatusTrackingUids (that is done when the app registers the
+        //   request), so removing them must not modify perUidCounter and mBlockedStatusTrackingUids
+        //   either.
+        // TODO(b/341228979): Modify nris in place instead of removing them and re-adding them
+        handleRemoveNetworkRequests(perAppCallbackRequestsToUpdate,
+                false /* untrackUids */);
         nrisToRegister.addAll(
                 createPerAppCallbackRequestsToRegister(perAppCallbackRequestsToUpdate));
         handleRegisterNetworkRequests(nrisToRegister);
@@ -13364,40 +13855,17 @@
             throw new IllegalStateException(e);
         }
 
-        try {
-            mBpfNetMaps.setDataSaverEnabled(enable);
-        } catch (ServiceSpecificException | UnsupportedOperationException e) {
-            Log.e(TAG, "Failed to set data saver " + enable + " : " + e);
-        }
-    }
-
-    @Override
-    public void updateMeteredNetworkAllowList(final int uid, final boolean add) {
-        enforceNetworkStackOrSettingsPermission();
-
-        try {
-            if (add) {
-                mBpfNetMaps.addNiceApp(uid);
-            } else {
-                mBpfNetMaps.removeNiceApp(uid);
+        synchronized (mBlockedStatusTrackingUids) {
+            try {
+                mBpfNetMaps.setDataSaverEnabled(enable);
+            } catch (ServiceSpecificException | UnsupportedOperationException e) {
+                Log.e(TAG, "Failed to set data saver " + enable + " : " + e);
+                return;
             }
-        } catch (ServiceSpecificException e) {
-            throw new IllegalStateException(e);
-        }
-    }
 
-    @Override
-    public void updateMeteredNetworkDenyList(final int uid, final boolean add) {
-        enforceNetworkStackOrSettingsPermission();
-
-        try {
-            if (add) {
-                mBpfNetMaps.addNaughtyApp(uid);
-            } else {
-                mBpfNetMaps.removeNaughtyApp(uid);
+            if (shouldTrackUidsForBlockedStatusCallbacks()) {
+                updateTrackingUidsBlockedReasons();
             }
-        } catch (ServiceSpecificException e) {
-            throw new IllegalStateException(e);
         }
     }
 
@@ -13420,6 +13888,12 @@
     public void setUidFirewallRule(final int chain, final int uid, final int rule) {
         enforceNetworkStackOrSettingsPermission();
 
+        if (chain == FIREWALL_CHAIN_BACKGROUND && !mBackgroundFirewallChainEnabled) {
+            Log.i(TAG, "Ignoring operation setUidFirewallRule on the background chain because the"
+                    + " feature is disabled.");
+            return;
+        }
+
         // There are only two type of firewall rule: FIREWALL_RULE_ALLOW or FIREWALL_RULE_DENY
         int firewallRule = getFirewallRuleType(chain, rule);
 
@@ -13427,13 +13901,24 @@
             throw new IllegalArgumentException("setUidFirewallRule with invalid rule: " + rule);
         }
 
-        try {
-            mBpfNetMaps.setUidRule(chain, uid, firewallRule);
-        } catch (ServiceSpecificException e) {
-            throw new IllegalStateException(e);
+        synchronized (mBlockedStatusTrackingUids) {
+            try {
+                mBpfNetMaps.setUidRule(chain, uid, firewallRule);
+            } catch (ServiceSpecificException e) {
+                throw new IllegalStateException(e);
+            }
+            if (shouldTrackUidsForBlockedStatusCallbacks()
+                    && mBlockedStatusTrackingUids.get(uid, 0) != 0) {
+                mHandler.sendMessage(mHandler.obtainMessage(EVENT_BLOCKED_REASONS_CHANGED,
+                        List.of(new Pair<>(uid, mBpfNetMaps.getUidNetworkingBlockedReasons(uid)))));
+            }
+            if (shouldTrackFirewallDestroySocketReasons()) {
+                maybePostFirewallDestroySocketReasons(chain, Set.of(uid));
+            }
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private int getPackageFirewallRule(final int chain, final String packageName)
             throws PackageManager.NameNotFoundException {
         final PackageManager pm = mContext.getPackageManager();
@@ -13441,6 +13926,7 @@
         return getUidFirewallRule(chain, appId);
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     @Override
     public int getUidFirewallRule(final int chain, final int uid) {
         enforceNetworkStackOrSettingsPermission();
@@ -13454,6 +13940,8 @@
             case ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1:
             case ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2:
             case ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3:
+            case ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER:
+            case ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN:
                 defaultRule = FIREWALL_RULE_ALLOW;
                 break;
             case ConnectivityManager.FIREWALL_CHAIN_DOZABLE:
@@ -13461,6 +13949,7 @@
             case ConnectivityManager.FIREWALL_CHAIN_RESTRICTED:
             case ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY:
             case ConnectivityManager.FIREWALL_CHAIN_BACKGROUND:
+            case ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW:
                 defaultRule = FIREWALL_RULE_DENY;
                 break;
             default:
@@ -13471,31 +13960,71 @@
         return rule;
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    private Set<Integer> getUidsOnFirewallChain(final int chain) throws ErrnoException {
+        if (BpfNetMapsUtils.isFirewallAllowList(chain)) {
+            return mBpfNetMaps.getUidsWithAllowRuleOnAllowListChain(chain);
+        } else {
+            return mBpfNetMaps.getUidsWithDenyRuleOnDenyListChain(chain);
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
     private void closeSocketsForFirewallChainLocked(final int chain)
             throws ErrnoException, SocketException, InterruptedIOException {
+        final Set<Integer> uidsOnChain = getUidsOnFirewallChain(chain);
         if (BpfNetMapsUtils.isFirewallAllowList(chain)) {
             // Allowlist means the firewall denies all by default, uids must be explicitly allowed
             // So, close all non-system socket owned by uids that are not explicitly allowed
             Set<Range<Integer>> ranges = new ArraySet<>();
             ranges.add(new Range<>(Process.FIRST_APPLICATION_UID, Integer.MAX_VALUE));
-            final Set<Integer> exemptUids = mBpfNetMaps.getUidsWithAllowRuleOnAllowListChain(chain);
-            mDeps.destroyLiveTcpSockets(ranges, exemptUids);
+            mDeps.destroyLiveTcpSockets(ranges, uidsOnChain /* exemptUids */);
         } else {
             // Denylist means the firewall allows all by default, uids must be explicitly denied
             // So, close socket owned by uids that are explicitly denied
-            final Set<Integer> ownerUids = mBpfNetMaps.getUidsWithDenyRuleOnDenyListChain(chain);
-            mDeps.destroyLiveTcpSocketsByOwnerUids(ownerUids);
+            mDeps.destroyLiveTcpSocketsByOwnerUids(uidsOnChain /* ownerUids */);
         }
     }
 
+    private void maybePostClearFirewallDestroySocketReasons(int chain) {
+        if (chain != FIREWALL_CHAIN_BACKGROUND) {
+            // TODO (b/300681644): Support other firewall chains
+            return;
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_CLEAR_FIREWALL_DESTROY_SOCKET_REASONS,
+                DESTROY_SOCKET_REASON_FIREWALL_BACKGROUND, 0 /* arg2 */));
+    }
+
     @Override
     public void setFirewallChainEnabled(final int chain, final boolean enable) {
         enforceNetworkStackOrSettingsPermission();
 
-        try {
-            mBpfNetMaps.setChildChain(chain, enable);
-        } catch (ServiceSpecificException e) {
-            throw new IllegalStateException(e);
+        if (chain == FIREWALL_CHAIN_BACKGROUND && !mBackgroundFirewallChainEnabled) {
+            Log.i(TAG, "Ignoring operation setFirewallChainEnabled on the background chain because"
+                    + " the feature is disabled.");
+            return;
+        }
+        if (METERED_ALLOW_CHAINS.contains(chain) || METERED_DENY_CHAINS.contains(chain)) {
+            // Metered chains are used from a separate bpf program that is triggered by iptables
+            // and can not be controlled by setFirewallChainEnabled.
+            throw new UnsupportedOperationException(
+                    "Chain (" + chain + ") can not be controlled by setFirewallChainEnabled");
+        }
+
+        synchronized (mBlockedStatusTrackingUids) {
+            try {
+                mBpfNetMaps.setChildChain(chain, enable);
+            } catch (ServiceSpecificException e) {
+                throw new IllegalStateException(e);
+            }
+            if (shouldTrackUidsForBlockedStatusCallbacks()) {
+                updateTrackingUidsBlockedReasons();
+            }
+            if (shouldTrackFirewallDestroySocketReasons() && !enable) {
+                // Clear destroy socket reasons so that CS does not destroy sockets of apps that
+                // have network access.
+                maybePostClearFirewallDestroySocketReasons(chain);
+            }
         }
 
         if (mDeps.isAtLeastU() && enable) {
@@ -13507,10 +14036,58 @@
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    @GuardedBy("mBlockedStatusTrackingUids")
+    private void updateTrackingUidsBlockedReasons() {
+        if (mBlockedStatusTrackingUids.size() == 0) {
+            return;
+        }
+        final ArrayList<Pair<Integer, Integer>> uidBlockedReasonsList = new ArrayList<>();
+        for (int i = 0; i < mBlockedStatusTrackingUids.size(); i++) {
+            final int uid = mBlockedStatusTrackingUids.keyAt(i);
+            uidBlockedReasonsList.add(
+                    new Pair<>(uid, mBpfNetMaps.getUidNetworkingBlockedReasons(uid)));
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_BLOCKED_REASONS_CHANGED,
+                uidBlockedReasonsList));
+    }
+
+    private int getFirewallDestroySocketReasons(final int blockedReasons) {
+        int destroySocketReasons = DESTROY_SOCKET_REASON_NONE;
+        if ((blockedReasons & BLOCKED_REASON_APP_BACKGROUND) != BLOCKED_REASON_NONE) {
+            destroySocketReasons |= DESTROY_SOCKET_REASON_FIREWALL_BACKGROUND;
+        }
+        return destroySocketReasons;
+    }
+
+    @RequiresApi(Build.VERSION_CODES.TIRAMISU)
+    @GuardedBy("mBlockedStatusTrackingUids")
+    private void maybePostFirewallDestroySocketReasons(int chain, Set<Integer> uids) {
+        if (chain != FIREWALL_CHAIN_BACKGROUND) {
+            // TODO (b/300681644): Support other firewall chains
+            return;
+        }
+        final ArrayList<Pair<Integer, Integer>> reasonsList = new ArrayList<>();
+        for (int uid: uids) {
+            final int blockedReasons = mBpfNetMaps.getUidNetworkingBlockedReasons(uid);
+            final int destroySocketReaons = getFirewallDestroySocketReasons(blockedReasons);
+            reasonsList.add(new Pair<>(uid, destroySocketReaons));
+        }
+        mHandler.sendMessage(mHandler.obtainMessage(EVENT_UPDATE_FIREWALL_DESTROY_SOCKET_REASONS,
+                reasonsList));
+    }
+
     @Override
     public boolean getFirewallChainEnabled(final int chain) {
         enforceNetworkStackOrSettingsPermission();
 
+        if (METERED_ALLOW_CHAINS.contains(chain) || METERED_DENY_CHAINS.contains(chain)) {
+            // Metered chains are used from a separate bpf program that is triggered by iptables
+            // and can not be controlled by setFirewallChainEnabled.
+            throw new UnsupportedOperationException(
+                    "getFirewallChainEnabled can not return status of chain (" + chain + ")");
+        }
+
         return mBpfNetMaps.isChainEnabled(chain);
     }
 
@@ -13518,7 +14095,37 @@
     public void replaceFirewallChain(final int chain, final int[] uids) {
         enforceNetworkStackOrSettingsPermission();
 
-        mBpfNetMaps.replaceUidChain(chain, uids);
+        if (chain == FIREWALL_CHAIN_BACKGROUND && !mBackgroundFirewallChainEnabled) {
+            Log.i(TAG, "Ignoring operation replaceFirewallChain on the background chain because"
+                    + " the feature is disabled.");
+            return;
+        }
+
+        synchronized (mBlockedStatusTrackingUids) {
+            // replaceFirewallChain removes uids that are currently on the chain and put |uids| on
+            // the chain.
+            // So this method could change blocked reasons of uids that are currently on chain +
+            // |uids|.
+            final Set<Integer> affectedUids = new ArraySet<>();
+            if (shouldTrackFirewallDestroySocketReasons()) {
+                try {
+                    affectedUids.addAll(getUidsOnFirewallChain(chain));
+                } catch (ErrnoException e) {
+                    Log.e(TAG, "Failed to get uids on chain(" + chain + "): " + e);
+                }
+                for (final int uid: uids) {
+                    affectedUids.add(uid);
+                }
+            }
+
+            mBpfNetMaps.replaceUidChain(chain, uids);
+            if (shouldTrackUidsForBlockedStatusCallbacks()) {
+                updateTrackingUidsBlockedReasons();
+            }
+            if (shouldTrackFirewallDestroySocketReasons()) {
+                maybePostFirewallDestroySocketReasons(chain, affectedUids);
+            }
+        }
     }
 
     @Override
@@ -13532,4 +14139,16 @@
         enforceNetworkStackPermission(mContext);
         return mRoutingCoordinatorService;
     }
+
+    @Override
+    public long getEnabledConnectivityManagerFeatures() {
+        long features = 0;
+        // The bitmask must be built based on final properties initialized in the constructor, to
+        // ensure that it does not change over time and is always consistent between
+        // ConnectivityManager and ConnectivityService.
+        if (mUseDeclaredMethodsForCallbacksEnabled) {
+            features |= ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS;
+        }
+        return features;
+    }
 }
diff --git a/service/src/com/android/server/TestNetworkService.java b/service/src/com/android/server/TestNetworkService.java
index 843b7b3..4d39d7d 100644
--- a/service/src/com/android/server/TestNetworkService.java
+++ b/service/src/com/android/server/TestNetworkService.java
@@ -267,6 +267,7 @@
         nc.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
         nc.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED);
         nc.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN);
+        nc.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED);
         nc.setNetworkSpecifier(new TestNetworkSpecifier(iface));
         nc.setAdministratorUids(administratorUids);
         if (!isMetered) {
diff --git a/service/src/com/android/server/connectivity/CarrierPrivilegeAuthenticator.java b/service/src/com/android/server/connectivity/CarrierPrivilegeAuthenticator.java
index 04d0fc1..f5fa4fb 100644
--- a/service/src/com/android/server/connectivity/CarrierPrivilegeAuthenticator.java
+++ b/service/src/com/android/server/connectivity/CarrierPrivilegeAuthenticator.java
@@ -91,42 +91,62 @@
             @NonNull final TelephonyManager t,
             @NonNull final TelephonyManagerShim telephonyManagerShim,
             final boolean requestRestrictedWifiEnabled,
-            @NonNull BiConsumer<Integer, Integer> listener) {
+            @NonNull BiConsumer<Integer, Integer> listener,
+            @NonNull final Handler connectivityServiceHandler) {
         mContext = c;
         mTelephonyManager = t;
         mTelephonyManagerShim = telephonyManagerShim;
-        final HandlerThread thread = deps.makeHandlerThread();
-        thread.start();
-        mHandler = new Handler(thread.getLooper());
         mUseCallbacksForServiceChanged = deps.isFeatureEnabled(
                 c, CARRIER_SERVICE_CHANGED_USE_CALLBACK);
         mRequestRestrictedWifiEnabled = requestRestrictedWifiEnabled;
         mListener = listener;
+        if (mRequestRestrictedWifiEnabled) {
+            mHandler = connectivityServiceHandler;
+        } else {
+            final HandlerThread thread = deps.makeHandlerThread();
+            thread.start();
+            mHandler = new Handler(thread.getLooper());
+            synchronized (mLock) {
+                registerSimConfigChangedReceiver();
+                simConfigChanged();
+            }
+        }
+    }
+
+    private void registerSimConfigChangedReceiver() {
         final IntentFilter filter = new IntentFilter();
         filter.addAction(TelephonyManager.ACTION_MULTI_SIM_CONFIG_CHANGED);
-        synchronized (mLock) {
-            // Never unregistered because the system server never stops
-            c.registerReceiver(new BroadcastReceiver() {
-                @Override
-                public void onReceive(final Context context, final Intent intent) {
-                    switch (intent.getAction()) {
-                        case TelephonyManager.ACTION_MULTI_SIM_CONFIG_CHANGED:
-                            simConfigChanged();
-                            break;
-                        default:
-                            Log.d(TAG, "Unknown intent received, action: " + intent.getAction());
-                    }
+        // Never unregistered because the system server never stops
+        mContext.registerReceiver(new BroadcastReceiver() {
+            @Override
+            public void onReceive(final Context context, final Intent intent) {
+                switch (intent.getAction()) {
+                    case TelephonyManager.ACTION_MULTI_SIM_CONFIG_CHANGED:
+                        simConfigChanged();
+                        break;
+                    default:
+                        Log.d(TAG, "Unknown intent received, action: " + intent.getAction());
                 }
-            }, filter, null, mHandler);
-            simConfigChanged();
+            }
+        }, filter, null, mHandler);
+    }
+
+    /**
+     * Start CarrierPrivilegeAuthenticator
+     */
+    public void start() {
+        if (mRequestRestrictedWifiEnabled) {
+            registerSimConfigChangedReceiver();
+            mHandler.post(this::simConfigChanged);
         }
     }
 
     public CarrierPrivilegeAuthenticator(@NonNull final Context c,
             @NonNull final TelephonyManager t, final boolean requestRestrictedWifiEnabled,
-            @NonNull BiConsumer<Integer, Integer> listener) {
+            @NonNull BiConsumer<Integer, Integer> listener,
+            @NonNull final Handler connectivityServiceHandler) {
         this(c, new Dependencies(), t, TelephonyManagerShimImpl.newInstance(t),
-                requestRestrictedWifiEnabled, listener);
+                requestRestrictedWifiEnabled, listener, connectivityServiceHandler);
     }
 
     public static class Dependencies {
@@ -146,6 +166,10 @@
     }
 
     private void simConfigChanged() {
+        //  If mRequestRestrictedWifiEnabled is false, constructor calls simConfigChanged
+        if (mRequestRestrictedWifiEnabled) {
+            ensureRunningOnHandlerThread();
+        }
         synchronized (mLock) {
             unregisterCarrierPrivilegesListeners();
             mModemCount = mTelephonyManager.getActiveModemCount();
@@ -188,6 +212,7 @@
         public void onCarrierPrivilegesChanged(
                 @NonNull List<String> privilegedPackageNames,
                 @NonNull int[] privilegedUids) {
+            ensureRunningOnHandlerThread();
             if (mUseCallbacksForServiceChanged) return;
             // Re-trigger the synchronous check (which is also very cheap due
             // to caching in CarrierPrivilegesTracker). This allows consistency
@@ -198,6 +223,7 @@
         @Override
         public void onCarrierServiceChanged(@Nullable final String carrierServicePackageName,
                 final int carrierServiceUid) {
+            ensureRunningOnHandlerThread();
             if (!mUseCallbacksForServiceChanged) {
                 // Re-trigger the synchronous check (which is also very cheap due
                 // to caching in CarrierPrivilegesTracker). This allows consistency
@@ -439,6 +465,13 @@
         }
     }
 
+    private void ensureRunningOnHandlerThread() {
+        if (mHandler.getLooper().getThread() != Thread.currentThread()) {
+            throw new IllegalStateException(
+                    "Not running on handler thread: " + Thread.currentThread().getName());
+        }
+    }
+
     public void dump(IndentingPrintWriter pw) {
         pw.println("CarrierPrivilegeAuthenticator:");
         pw.println("mRequestRestrictedWifiEnabled = " + mRequestRestrictedWifiEnabled);
diff --git a/service/src/com/android/server/connectivity/ClatCoordinator.java b/service/src/com/android/server/connectivity/ClatCoordinator.java
index daaf91d..b1c770b 100644
--- a/service/src/com/android/server/connectivity/ClatCoordinator.java
+++ b/service/src/com/android/server/connectivity/ClatCoordinator.java
@@ -41,9 +41,11 @@
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.IndentingPrintWriter;
+import com.android.net.module.util.BpfDump;
 import com.android.net.module.util.BpfMap;
 import com.android.net.module.util.IBpfMap;
 import com.android.net.module.util.InterfaceParams;
+import com.android.net.module.util.SingleWriterBpfMap;
 import com.android.net.module.util.TcUtils;
 import com.android.net.module.util.bpf.ClatEgress4Key;
 import com.android.net.module.util.bpf.ClatEgress4Value;
@@ -255,7 +257,7 @@
         @Nullable
         public IBpfMap<ClatIngress6Key, ClatIngress6Value> getBpfIngress6Map() {
             try {
-                return new BpfMap<>(CLAT_INGRESS6_MAP_PATH,
+                return SingleWriterBpfMap.getSingleton(CLAT_INGRESS6_MAP_PATH,
                        ClatIngress6Key.class, ClatIngress6Value.class);
             } catch (ErrnoException e) {
                 Log.e(TAG, "Cannot create ingress6 map: " + e);
@@ -267,7 +269,7 @@
         @Nullable
         public IBpfMap<ClatEgress4Key, ClatEgress4Value> getBpfEgress4Map() {
             try {
-                return new BpfMap<>(CLAT_EGRESS4_MAP_PATH,
+                return SingleWriterBpfMap.getSingleton(CLAT_EGRESS4_MAP_PATH,
                        ClatEgress4Key.class, ClatEgress4Value.class);
             } catch (ErrnoException e) {
                 Log.e(TAG, "Cannot create egress4 map: " + e);
@@ -279,6 +281,7 @@
         @Nullable
         public IBpfMap<CookieTagMapKey, CookieTagMapValue> getBpfCookieTagMap() {
             try {
+                // also read and written from other locations
                 return new BpfMap<>(COOKIE_TAG_MAP_PATH,
                        CookieTagMapKey.class, CookieTagMapValue.class);
             } catch (ErrnoException e) {
@@ -399,6 +402,10 @@
         mCookieTagMap = mDeps.getBpfCookieTagMap();
     }
 
+    // Note that this may only be called on a brand new v4-* interface,
+    // because it uses bpfmap.insertEntry() which fails if entry exists,
+    // and because the value includes (initialized to 0) byte/packet
+    // counters, so a replace (instead of insert) would wipe those stats.
     private void maybeStartBpf(final ClatdTracker tracker) {
         if (mIngressMap == null || mEgressMap == null) return;
 
@@ -520,31 +527,6 @@
         }
     }
 
-    private void maybeCleanUp(ParcelFileDescriptor tunFd, ParcelFileDescriptor readSock6,
-            ParcelFileDescriptor writeSock6) {
-        if (tunFd != null) {
-            try {
-                tunFd.close();
-            } catch (IOException e) {
-                Log.e(TAG, "Fail to close tun file descriptor " + e);
-            }
-        }
-        if (readSock6 != null) {
-            try {
-                readSock6.close();
-            } catch (IOException e) {
-                Log.e(TAG, "Fail to close read socket " + e);
-            }
-        }
-        if (writeSock6 != null) {
-            try {
-                writeSock6.close();
-            } catch (IOException e) {
-                Log.e(TAG, "Fail to close write socket " + e);
-            }
-        }
-    }
-
     private void tagSocketAsClat(long cookie) throws IOException {
         if (mCookieTagMap == null) {
             throw new IOException("Cookie tag map is not initialized");
@@ -600,42 +582,6 @@
             throw new IOException("Prefix must be 96 bits long: " + nat64Prefix);
         }
 
-        // [1] Pick an IPv4 address from 192.0.0.4, 192.0.0.5, 192.0.0.6 ..
-        final String v4Str;
-        try {
-            v4Str = mDeps.selectIpv4Address(INIT_V4ADDR_STRING, INIT_V4ADDR_PREFIX_LEN);
-        } catch (IOException e) {
-            throw new IOException("no IPv4 addresses were available for clat: " + e);
-        }
-
-        final Inet4Address v4;
-        try {
-            v4 = (Inet4Address) InetAddresses.parseNumericAddress(v4Str);
-        } catch (ClassCastException | IllegalArgumentException | NullPointerException e) {
-            throw new IOException("Invalid IPv4 address " + v4Str);
-        }
-
-        // [2] Generate a checksum-neutral IID.
-        final Integer fwmark = getFwmark(netId);
-        final String pfx96Str = nat64Prefix.getAddress().getHostAddress();
-        final String v6Str;
-        try {
-            v6Str = mDeps.generateIpv6Address(iface, v4Str, pfx96Str, fwmark);
-        } catch (IOException e) {
-            throw new IOException("no IPv6 addresses were available for clat: " + e);
-        }
-
-        final Inet6Address pfx96 = (Inet6Address) nat64Prefix.getAddress();
-        final Inet6Address v6;
-        try {
-            v6 = (Inet6Address) InetAddresses.parseNumericAddress(v6Str);
-        } catch (ClassCastException | IllegalArgumentException | NullPointerException e) {
-            throw new IOException("Invalid IPv6 address " + v6Str);
-        }
-
-        // [3] Open, configure and bring up the tun interface.
-        // Create the v4-... tun interface.
-
         // Initialize all required file descriptors with null pointer. This makes the following
         // error handling easier. Simply always call #maybeCleanUp for closing file descriptors,
         // if any valid ones, in error handling.
@@ -643,145 +589,123 @@
         ParcelFileDescriptor readSock6 = null;
         ParcelFileDescriptor writeSock6 = null;
 
-        final String tunIface = CLAT_PREFIX + iface;
-        try {
-            tunFd = mDeps.adoptFd(mDeps.createTunInterface(tunIface));
-        } catch (IOException e) {
-            throw new IOException("Create tun interface " + tunIface + " failed: " + e);
-        }
+        long cookie = 0;
+        boolean isSocketTagged = false;
 
-        final int tunIfIndex = mDeps.getInterfaceIndex(tunIface);
-        if (tunIfIndex == INVALID_IFINDEX) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Fail to get interface index for interface " + tunIface);
-        }
+        try {
+            // [1] Pick an IPv4 address from 192.0.0.4, 192.0.0.5, 192.0.0.6 ..
+            final String v4Str = mDeps.selectIpv4Address(INIT_V4ADDR_STRING,
+                    INIT_V4ADDR_PREFIX_LEN);
+            final Inet4Address v4 = (Inet4Address) InetAddresses.parseNumericAddress(v4Str);
 
-        // disable IPv6 on it - failing to do so is not a critical error
-        try {
-            mNetd.interfaceSetEnableIPv6(tunIface, false /* enabled */);
-        } catch (RemoteException | ServiceSpecificException e) {
-            Log.e(TAG, "Disable IPv6 on " + tunIface + " failed: " + e);
-        }
+            // [2] Generate a checksum-neutral IID.
+            final Integer fwmark = getFwmark(netId);
+            final String pfx96Str = nat64Prefix.getAddress().getHostAddress();
+            final String v6Str = mDeps.generateIpv6Address(iface, v4Str, pfx96Str, fwmark);
+            final Inet6Address pfx96 = (Inet6Address) nat64Prefix.getAddress();
+            final Inet6Address v6 = (Inet6Address) InetAddresses.parseNumericAddress(v6Str);
 
-        // Detect ipv4 mtu.
-        final int detectedMtu;
-        try {
-            detectedMtu = mDeps.detectMtu(pfx96Str,
-                ByteBuffer.wrap(GOOGLE_DNS_4.getAddress()).getInt(), fwmark);
-        } catch (IOException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Detect MTU on " + tunIface + " failed: " + e);
-        }
-        final int mtu = adjustMtu(detectedMtu);
-        Log.i(TAG, "detected ipv4 mtu of " + detectedMtu + " adjusted to " + mtu);
+            // [3] Open and configure local 464xlat read/write sockets.
+            // Opens a packet socket to receive IPv6 packets in clatd.
 
-        // Config tun interface mtu, address and bring up.
-        try {
-            mNetd.interfaceSetMtu(tunIface, mtu);
-        } catch (RemoteException | ServiceSpecificException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Set MTU " + mtu + " on " + tunIface + " failed: " + e);
-        }
-        final InterfaceConfigurationParcel ifConfig = new InterfaceConfigurationParcel();
-        ifConfig.ifName = tunIface;
-        ifConfig.ipv4Addr = v4Str;
-        ifConfig.prefixLength = 32;
-        ifConfig.hwAddr = "";
-        ifConfig.flags = new String[] {IF_STATE_UP};
-        try {
-            mNetd.interfaceSetCfg(ifConfig);
-        } catch (RemoteException | ServiceSpecificException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Setting IPv4 address to " + ifConfig.ipv4Addr + "/"
-                    + ifConfig.prefixLength + " failed on " + ifConfig.ifName + ": " + e);
-        }
-
-        // [4] Open and configure local 464xlat read/write sockets.
-        // Opens a packet socket to receive IPv6 packets in clatd.
-        try {
             // Use a JNI call to get native file descriptor instead of Os.socket() because we would
             // like to use ParcelFileDescriptor to manage file descriptor. But ctor
             // ParcelFileDescriptor(FileDescriptor fd) is a @hide function. Need to use native file
             // descriptor to initialize ParcelFileDescriptor object instead.
             readSock6 = mDeps.adoptFd(mDeps.openPacketSocket());
-        } catch (IOException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Open packet socket failed: " + e);
-        }
 
-        // Opens a raw socket with a given fwmark to send IPv6 packets in clatd.
-        try {
+            // Opens a raw socket with a given fwmark to send IPv6 packets in clatd.
             // Use a JNI call to get native file descriptor instead of Os.socket(). See above
             // reason why we use jniOpenPacketSocket6().
             writeSock6 = mDeps.adoptFd(mDeps.openRawSocket6(fwmark));
-        } catch (IOException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Open raw socket failed: " + e);
-        }
 
-        final int ifIndex = mDeps.getInterfaceIndex(iface);
-        if (ifIndex == INVALID_IFINDEX) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("Fail to get interface index for interface " + iface);
-        }
+            final int ifIndex = mDeps.getInterfaceIndex(iface);
+            if (ifIndex == INVALID_IFINDEX) {
+                throw new IOException("Fail to get interface index for interface " + iface);
+            }
 
-        // Start translating packets to the new prefix.
-        try {
+            // Start translating packets to the new prefix.
             mDeps.addAnycastSetsockopt(writeSock6.getFileDescriptor(), v6Str, ifIndex);
-        } catch (IOException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("add anycast sockopt failed: " + e);
-        }
-
-        // Tag socket as AID_CLAT to avoid duplicated CLAT data usage accounting.
-        final long cookie;
-        try {
+            // Tag socket as AID_CLAT to avoid duplicated CLAT data usage accounting.
             cookie = mDeps.getSocketCookie(writeSock6.getFileDescriptor());
             tagSocketAsClat(cookie);
-        } catch (IOException e) {
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("tag raw socket failed: " + e);
-        }
-
-        // Update our packet socket filter to reflect the new 464xlat IP address.
-        try {
+            isSocketTagged = true;
+            // Update our packet socket filter to reflect the new 464xlat IP address.
             mDeps.configurePacketSocket(readSock6.getFileDescriptor(), v6Str, ifIndex);
-        } catch (IOException e) {
-            try {
-                untagSocket(cookie);
-            } catch (IOException e2) {
-                Log.e(TAG, "untagSocket cookie " + cookie + " failed: " + e2);
-            }
-            maybeCleanUp(tunFd, readSock6, writeSock6);
-            throw new IOException("configure packet socket failed: " + e);
-        }
 
-        // [5] Start clatd.
-        final int pid;
-        try {
-            pid = mDeps.startClatd(tunFd.getFileDescriptor(), readSock6.getFileDescriptor(),
-                    writeSock6.getFileDescriptor(), iface, pfx96Str, v4Str, v6Str);
-        } catch (IOException e) {
-            try {
-                untagSocket(cookie);
-            } catch (IOException e2) {
-                Log.e(TAG, "untagSocket cookie " + cookie + " failed: " + e2);
+            // [4] Open, configure and bring up the tun interface.
+            // Create the v4-... tun interface.
+            final String tunIface = CLAT_PREFIX + iface;
+            tunFd = mDeps.adoptFd(mDeps.createTunInterface(tunIface));
+            final int tunIfIndex = mDeps.getInterfaceIndex(tunIface);
+            if (tunIfIndex == INVALID_IFINDEX) {
+                throw new IOException("Fail to get interface index for interface " + tunIface);
             }
-            throw new IOException("Error start clatd on " + iface + ": " + e);
-        } finally {
+            // disable IPv6 on it - failing to do so is not a critical error
+            mNetd.interfaceSetEnableIPv6(tunIface, false /* enabled */);
+            // Detect ipv4 mtu.
+            final int detectedMtu = mDeps.detectMtu(pfx96Str,
+                    ByteBuffer.wrap(GOOGLE_DNS_4.getAddress()).getInt(), fwmark);
+            final int mtu = adjustMtu(detectedMtu);
+            Log.i(TAG, "detected ipv4 mtu of " + detectedMtu + " adjusted to " + mtu);
+            // Config tun interface mtu, address and bring up.
+            mNetd.interfaceSetMtu(tunIface, mtu);
+            final InterfaceConfigurationParcel ifConfig = new InterfaceConfigurationParcel();
+            ifConfig.ifName = tunIface;
+            ifConfig.ipv4Addr = v4Str;
+            ifConfig.prefixLength = 32;
+            ifConfig.hwAddr = "";
+            ifConfig.flags = new String[] {IF_STATE_UP};
+            mNetd.interfaceSetCfg(ifConfig);
+
+            // [5] Start clatd.
+            final int pid = mDeps.startClatd(tunFd.getFileDescriptor(),
+                    readSock6.getFileDescriptor(), writeSock6.getFileDescriptor(), iface, pfx96Str,
+                    v4Str, v6Str);
             // The file descriptors have been duplicated (dup2) to clatd in native_startClatd().
-            // Close these file descriptor stubs which are unused anymore.
-            maybeCleanUp(tunFd, readSock6, writeSock6);
+            // Close these file descriptor stubs in finally block.
+
+            // [6] Initialize and store clatd tracker object.
+            mClatdTracker = new ClatdTracker(iface, ifIndex, tunIface, tunIfIndex, v4, v6, pfx96,
+                    pid, cookie);
+
+            // [7] Start BPF
+            maybeStartBpf(mClatdTracker);
+
+            return v6Str;
+        } catch (IOException | RemoteException | ServiceSpecificException | ClassCastException
+                 | IllegalArgumentException | NullPointerException e) {
+            if (isSocketTagged) {
+                try {
+                    untagSocket(cookie);
+                } catch (IOException e2) {
+                    Log.e(TAG, "untagSocket cookie " + cookie + " failed: " + e2);
+                }
+            }
+            throw new IOException("Failed to start clat ", e);
+        } finally {
+            if (tunFd != null) {
+                try {
+                    tunFd.close();
+                } catch (IOException e) {
+                    Log.e(TAG, "Fail to close tun file descriptor " + e);
+                }
+            }
+            if (readSock6 != null) {
+                try {
+                    readSock6.close();
+                } catch (IOException e) {
+                    Log.e(TAG, "Fail to close read socket " + e);
+                }
+            }
+            if (writeSock6 != null) {
+                try {
+                    writeSock6.close();
+                } catch (IOException e) {
+                    Log.e(TAG, "Fail to close write socket " + e);
+                }
+            }
         }
-
-        // [6] Initialize and store clatd tracker object.
-        mClatdTracker = new ClatdTracker(iface, ifIndex, tunIface, tunIfIndex, v4, v6, pfx96,
-                pid, cookie);
-
-        // [7] Start BPF
-        maybeStartBpf(mClatdTracker);
-
-        return v6Str;
     }
 
     private void maybeStopBpf(final ClatdTracker tracker) {
@@ -847,12 +771,12 @@
             if (mIngressMap.isEmpty()) {
                 pw.println("<empty>");
             }
-            pw.println("BPF ingress map: iif nat64Prefix v6Addr -> v4Addr oif");
+            pw.println("BPF ingress map: iif nat64Prefix v6Addr -> v4Addr oif (packets bytes)");
             pw.increaseIndent();
             mIngressMap.forEach((k, v) -> {
                 // TODO: print interface name
-                pw.println(String.format("%d %s/96 %s -> %s %d", k.iif, k.pfx96, k.local6,
-                        v.local4, v.oif));
+                pw.println(String.format("%d %s/96 %s -> %s %d (%d %d)", k.iif, k.pfx96, k.local6,
+                        v.local4, v.oif, v.packets, v.bytes));
             });
             pw.decreaseIndent();
         } catch (ErrnoException e) {
@@ -870,12 +794,13 @@
             if (mEgressMap.isEmpty()) {
                 pw.println("<empty>");
             }
-            pw.println("BPF egress map: iif v4Addr -> v6Addr nat64Prefix oif");
+            pw.println("BPF egress map: iif v4Addr -> v6Addr nat64Prefix oif (packets bytes)");
             pw.increaseIndent();
             mEgressMap.forEach((k, v) -> {
                 // TODO: print interface name
-                pw.println(String.format("%d %s -> %s %s/96 %d %s", k.iif, k.local4, v.local6,
-                        v.pfx96, v.oif, v.oifIsEthernet != 0 ? "ether" : "rawip"));
+                pw.println(String.format("%d %s -> %s %s/96 %d %s (%d %d)", k.iif, k.local4,
+                        v.local6, v.pfx96, v.oif, v.oifIsEthernet != 0 ? "ether" : "rawip",
+                        v.packets, v.bytes));
             });
             pw.decreaseIndent();
         } catch (ErrnoException e) {
@@ -884,6 +809,29 @@
     }
 
     /**
+     * Dump raw BPF map into base64 encoded strings {@literal "<base64 key>,<base64 value>"}.
+     * Allow to dump only one map in each call. For test only.
+     *
+     * @param pw print writer.
+     * @param isEgress4Map whether to dump the egress4 map (true) or the ingress6 map (false).
+     *
+     * Usage:
+     * $ dumpsys connectivity {clatEgress4RawBpfMap|clatIngress6RawBpfMap}
+     *
+     * Output:
+     * {@literal <base64 encoded key #1>,<base64 encoded value #1>}
+     * {@literal <base64 encoded key #2>,<base64 encoded value #2>}
+     * ..
+     */
+    public void dumpRawMap(@NonNull IndentingPrintWriter pw, boolean isEgress4Map) {
+        if (isEgress4Map) {
+            BpfDump.dumpRawMap(mEgressMap, pw);
+        } else {
+            BpfDump.dumpRawMap(mIngressMap, pw);
+        }
+    }
+
+    /**
      * Dump the coordinator information.
      *
      * @param pw print writer.
diff --git a/service/src/com/android/server/connectivity/ConnectivityFlags.java b/service/src/com/android/server/connectivity/ConnectivityFlags.java
index bf09160..1ee1ed7 100644
--- a/service/src/com/android/server/connectivity/ConnectivityFlags.java
+++ b/service/src/com/android/server/connectivity/ConnectivityFlags.java
@@ -38,6 +38,17 @@
 
     public static final String REQUEST_RESTRICTED_WIFI =
             "request_restricted_wifi";
+
+    public static final String INGRESS_TO_VPN_ADDRESS_FILTERING =
+            "ingress_to_vpn_address_filtering";
+
+    public static final String BACKGROUND_FIREWALL_CHAIN = "background_firewall_chain";
+
+    public static final String DELAY_DESTROY_SOCKETS = "delay_destroy_sockets";
+
+    public static final String USE_DECLARED_METHODS_FOR_CALLBACKS =
+            "use_declared_methods_for_callbacks";
+
     private boolean mNoRematchAllRequestsOnRegister;
 
     /**
diff --git a/service/src/com/android/server/connectivity/DnsManager.java b/service/src/com/android/server/connectivity/DnsManager.java
index 8e6854a..ac02229 100644
--- a/service/src/com/android/server/connectivity/DnsManager.java
+++ b/service/src/com/android/server/connectivity/DnsManager.java
@@ -390,6 +390,7 @@
                 : new String[0];            // Off
         paramsParcel.transportTypes = nc.getTransportTypes();
         paramsParcel.meteredNetwork = nc.isMetered();
+        paramsParcel.interfaceNames = lp.getAllInterfaceNames().toArray(new String[0]);
         // Prepare to track the validation status of the DNS servers in the
         // resolver config when private DNS is in opportunistic or strict mode.
         if (useTls) {
@@ -403,13 +404,14 @@
         }
 
         Log.d(TAG, String.format("sendDnsConfigurationForNetwork(%d, %s, %s, %d, %d, %d, %d, "
-                + "%d, %d, %s, %s, %s, %b)", paramsParcel.netId,
+                + "%d, %d, %s, %s, %s, %b, %s)", paramsParcel.netId,
                 Arrays.toString(paramsParcel.servers), Arrays.toString(paramsParcel.domains),
                 paramsParcel.sampleValiditySeconds, paramsParcel.successThreshold,
                 paramsParcel.minSamples, paramsParcel.maxSamples, paramsParcel.baseTimeoutMsec,
                 paramsParcel.retryCount, paramsParcel.tlsName,
                 Arrays.toString(paramsParcel.tlsServers),
-                Arrays.toString(paramsParcel.transportTypes), paramsParcel.meteredNetwork));
+                Arrays.toString(paramsParcel.transportTypes), paramsParcel.meteredNetwork,
+                Arrays.toString(paramsParcel.interfaceNames)));
 
         try {
             mDnsResolver.setResolverConfiguration(paramsParcel);
diff --git a/service/src/com/android/server/connectivity/DscpPolicyTracker.java b/service/src/com/android/server/connectivity/DscpPolicyTracker.java
index 15d6adb..9c2b9e8 100644
--- a/service/src/com/android/server/connectivity/DscpPolicyTracker.java
+++ b/service/src/com/android/server/connectivity/DscpPolicyTracker.java
@@ -64,6 +64,8 @@
         return "/sys/fs/bpf/net_shared/map_" + which + "_map";
     }
 
+    private final boolean mHaveProgram = TcUtils.isBpfProgramUsable(PROG_PATH);
+
     private Set<String> mAttachedIfaces;
 
     private final BpfMap<Struct.S32, DscpPolicyValue> mBpfDscpIpv4Policies;
@@ -325,6 +327,7 @@
      * Attach BPF program
      */
     private boolean attachProgram(@NonNull String iface) {
+        if (!mHaveProgram) return false;
         try {
             NetworkInterface netIface = NetworkInterface.getByName(iface);
             TcUtils.tcFilterAddDevBpf(netIface.getIndex(), false, PRIO_DSCP, (short) ETH_P_ALL,
diff --git a/service/src/com/android/server/connectivity/KeepaliveStatsTracker.java b/service/src/com/android/server/connectivity/KeepaliveStatsTracker.java
index 48af9fa..21dbb45 100644
--- a/service/src/com/android/server/connectivity/KeepaliveStatsTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveStatsTracker.java
@@ -29,6 +29,7 @@
 import android.net.TelephonyNetworkSpecifier;
 import android.net.TransportInfo;
 import android.net.wifi.WifiInfo;
+import android.os.Build;
 import android.os.Handler;
 import android.os.SystemClock;
 import android.telephony.SubscriptionInfo;
@@ -39,6 +40,8 @@
 import android.util.SparseArray;
 import android.util.SparseIntArray;
 
+import androidx.annotation.RequiresApi;
+
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.metrics.DailykeepaliveInfoReported;
 import com.android.metrics.DurationForNumOfKeepalive;
@@ -279,6 +282,7 @@
          *
          * @param dailyKeepaliveInfoReported the proto to write to statsD.
          */
+        @RequiresApi(Build.VERSION_CODES.TIRAMISU)
         public void writeStats(DailykeepaliveInfoReported dailyKeepaliveInfoReported) {
             ConnectivityStatsLog.write(
                     ConnectivityStatsLog.DAILY_KEEPALIVE_INFO_REPORTED,
diff --git a/service/src/com/android/server/connectivity/MulticastRoutingCoordinatorService.java b/service/src/com/android/server/connectivity/MulticastRoutingCoordinatorService.java
index 4d5001b..af4aee5 100644
--- a/service/src/com/android/server/connectivity/MulticastRoutingCoordinatorService.java
+++ b/service/src/com/android/server/connectivity/MulticastRoutingCoordinatorService.java
@@ -27,6 +27,8 @@
 import static android.system.OsConstants.SOCK_NONBLOCK;
 import static android.system.OsConstants.SOCK_RAW;
 
+import static com.android.net.module.util.CollectionUtils.getIndexForValue;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.net.MulticastRoutingConfig;
@@ -150,7 +152,7 @@
     }
 
     private Integer getInterfaceIndex(String ifName) {
-        int mapIndex = mInterfaces.indexOfValue(ifName);
+        int mapIndex = getIndexForValue(mInterfaces, ifName);
         if (mapIndex < 0) return null;
         return mInterfaces.keyAt(mapIndex);
     }
@@ -166,14 +168,18 @@
     public void applyMulticastRoutingConfig(
             final String iifName, final String oifName, final MulticastRoutingConfig newConfig) {
         checkOnHandlerThread();
+        Objects.requireNonNull(iifName, "IifName can't be null");
+        Objects.requireNonNull(oifName, "OifName can't be null");
 
         if (newConfig.getForwardingMode() != FORWARD_NONE) {
             // Make sure iif and oif are added as multicast forwarding interfaces
-            try {
-                maybeAddAndTrackInterface(iifName);
-                maybeAddAndTrackInterface(oifName);
-            } catch (IllegalStateException e) {
-                Log.e(TAG, "Failed to apply multicast routing config, ", e);
+            if (!maybeAddAndTrackInterface(iifName) || !maybeAddAndTrackInterface(oifName)) {
+                Log.e(
+                        TAG,
+                        "Failed to apply multicast routing config from "
+                                + iifName
+                                + " to "
+                                + oifName);
                 return;
             }
         }
@@ -246,7 +252,7 @@
         if (virtualIndex == null) return;
 
         updateMfcs();
-        mInterfaces.removeAt(mInterfaces.indexOfValue(ifName));
+        mInterfaces.removeAt(getIndexForValue(mInterfaces, ifName));
         mVirtualInterfaces.remove(virtualIndex);
         try {
             mDependencies.setsockoptMrt6DelMif(mMulticastRoutingFd, virtualIndex);
@@ -256,9 +262,14 @@
         }
     }
 
+    /**
+     * Returns the next available virtual index for multicast routing, or -1 if the number of
+     * virtual interfaces has reached max value.
+     */
     private int getNextAvailableVirtualIndex() {
         if (mVirtualInterfaces.size() >= MAX_NUM_OF_MULTICAST_VIRTUAL_INTERFACES) {
-            throw new IllegalStateException("Can't allocate new multicast virtual interface");
+            Log.e(TAG, "Can't allocate new multicast virtual interface");
+            return -1;
         }
         for (int i = 0; i < mVirtualInterfaces.size(); i++) {
             if (!mVirtualInterfaces.contains(i)) {
@@ -270,7 +281,7 @@
 
     @VisibleForTesting
     public Integer getVirtualInterfaceIndex(String ifName) {
-        int mapIndex = mVirtualInterfaces.indexOfValue(ifName);
+        int mapIndex = getIndexForValue(mVirtualInterfaces, ifName);
         if (mapIndex < 0) return null;
         return mVirtualInterfaces.keyAt(mapIndex);
     }
@@ -289,12 +300,23 @@
         return mVirtualInterfaces.get(virtualIndex);
     }
 
-    private void maybeAddAndTrackInterface(String ifName) {
+    /**
+     * Returns {@code true} if the interfaces is added and tracked, or {@code false} when failed
+     * to add the interface.
+     */
+    private boolean maybeAddAndTrackInterface(String ifName) {
         checkOnHandlerThread();
-        if (mVirtualInterfaces.indexOfValue(ifName) >= 0) return;
+        if (getIndexForValue(mVirtualInterfaces, ifName) >= 0) return true;
 
         int nextVirtualIndex = getNextAvailableVirtualIndex();
+        if (nextVirtualIndex < 0) {
+            return false;
+        }
         int ifIndex = mDependencies.getInterfaceIndex(ifName);
+        if (ifIndex == 0) {
+            Log.e(TAG, "Can't get interface index for " + ifName);
+            return false;
+        }
         final StructMif6ctl mif6ctl =
                     new StructMif6ctl(
                             nextVirtualIndex,
@@ -307,10 +329,11 @@
             Log.d(TAG, "Added mifi " + nextVirtualIndex + " to MIF");
         } catch (ErrnoException e) {
             Log.e(TAG, "failed to add multicast virtual interface", e);
-            return;
+            return false;
         }
         mVirtualInterfaces.put(nextVirtualIndex, ifName);
         mInterfaces.put(ifIndex, ifName);
+        return true;
     }
 
     @VisibleForTesting
@@ -796,13 +819,12 @@
             NetworkUtils.setsockoptBytes(fd, IPPROTO_IPV6, MRT6_DEL_MFC, bytes);
         }
 
-        public Integer getInterfaceIndex(String ifName) {
-            try {
-                NetworkInterface ni = NetworkInterface.getByName(ifName);
-                return ni.getIndex();
-            } catch (NullPointerException | SocketException e) {
-                return null;
-            }
+        /**
+         * Returns the interface index for an interface name, or 0 if the interface index could
+         * not be found.
+         */
+        public int getInterfaceIndex(String ifName) {
+            return Os.if_nametoindex(ifName);
         }
 
         public NetworkInterface getNetworkInterface(int physicalIndex) {
diff --git a/service/src/com/android/server/connectivity/Nat464Xlat.java b/service/src/com/android/server/connectivity/Nat464Xlat.java
index 065922d..a979681 100644
--- a/service/src/com/android/server/connectivity/Nat464Xlat.java
+++ b/service/src/com/android/server/connectivity/Nat464Xlat.java
@@ -202,13 +202,13 @@
             try {
                 addrStr = mClatCoordinator.clatStart(baseIface, getNetId(), mNat64PrefixInUse);
             } catch (IOException e) {
-                Log.e(TAG, "Error starting clatd on " + baseIface + ": " + e);
+                Log.e(TAG, "Error starting clatd on " + baseIface, e);
             }
         } else {
             try {
                 addrStr = mNetd.clatdStart(baseIface, mNat64PrefixInUse.toString());
             } catch (RemoteException | ServiceSpecificException e) {
-                Log.e(TAG, "Error starting clatd on " + baseIface + ": " + e);
+                Log.e(TAG, "Error starting clatd on " + baseIface, e);
             }
         }
         mIface = CLAT_PREFIX + baseIface;
@@ -217,7 +217,7 @@
         try {
             mIPv6Address = (Inet6Address) InetAddresses.parseNumericAddress(addrStr);
         } catch (ClassCastException | IllegalArgumentException | NullPointerException e) {
-            Log.e(TAG, "Invalid IPv6 address " + addrStr);
+            Log.e(TAG, "Invalid IPv6 address " + addrStr , e);
         }
         if (mPrefixDiscoveryRunning && !isPrefixDiscoveryNeeded()) {
             stopPrefixDiscovery();
@@ -622,6 +622,18 @@
         }
     }
 
+    /**
+     * Dump the raw BPF maps in 464XLAT
+     *
+     * @param pw print writer.
+     * @param isEgress4Map whether to dump the egress4 map (true) or the ingress6 map (false).
+     */
+    public void dumpRawBpfMap(IndentingPrintWriter pw, boolean isEgress4Map) {
+        if (SdkLevel.isAtLeastT()) {
+            mClatCoordinator.dumpRawMap(pw, isEgress4Map);
+        }
+    }
+
     @Override
     public String toString() {
         return "mBaseIface: " + mBaseIface + ", mIface: " + mIface + ", mState: " + mState;
diff --git a/service/src/com/android/server/connectivity/NetworkNotificationManager.java b/service/src/com/android/server/connectivity/NetworkNotificationManager.java
index 7707122..fd41ee6 100644
--- a/service/src/com/android/server/connectivity/NetworkNotificationManager.java
+++ b/service/src/com/android/server/connectivity/NetworkNotificationManager.java
@@ -170,9 +170,11 @@
                     && !TextUtils.isEmpty(nai.linkProperties.getCaptivePortalData()
                     .getVenueFriendlyName())) {
                 name = nai.linkProperties.getCaptivePortalData().getVenueFriendlyName();
+            } else if (!TextUtils.isEmpty(extraInfo)) {
+                name = extraInfo;
             } else {
-                name = TextUtils.isEmpty(extraInfo)
-                        ? WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid()) : extraInfo;
+                final String ssid = WifiInfo.sanitizeSsid(nai.networkCapabilities.getSsid());
+                name = ssid == null ? "" : ssid;
             }
             // Only notify for Internet-capable networks.
             if (!nai.networkCapabilities.hasCapability(NET_CAPABILITY_INTERNET)) return;
diff --git a/service/src/com/android/server/connectivity/SatelliteAccessController.java b/service/src/com/android/server/connectivity/SatelliteAccessController.java
index b53abce..2cdc932 100644
--- a/service/src/com/android/server/connectivity/SatelliteAccessController.java
+++ b/service/src/com/android/server/connectivity/SatelliteAccessController.java
@@ -20,7 +20,10 @@
 import android.annotation.NonNull;
 import android.app.role.OnRoleHoldersChangedListener;
 import android.app.role.RoleManager;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.os.Handler;
@@ -49,7 +52,6 @@
     private final Context mContext;
     private final Dependencies mDeps;
     private final DefaultMessageRoleListener mDefaultMessageRoleListener;
-    private final UserManager mUserManager;
     private final Consumer<Set<Integer>> mCallback;
     private final Handler mConnectivityServiceHandler;
 
@@ -114,7 +116,6 @@
             @NonNull final Handler connectivityServiceInternalHandler) {
         mContext = c;
         mDeps = deps;
-        mUserManager = mContext.getSystemService(UserManager.class);
         mDefaultMessageRoleListener = new DefaultMessageRoleListener();
         mCallback = callback;
         mConnectivityServiceHandler = connectivityServiceInternalHandler;
@@ -165,9 +166,6 @@
     }
 
     // on Role sms change triggered by OnRoleHoldersChangedListener()
-    // TODO(b/326373613): using UserLifecycleListener, callback to be received when user removed for
-    // user delete scenario. This to be used to update uid list and ML Layer request can also be
-    // updated.
     private void onRoleSmsChanged(@NonNull UserHandle userHandle) {
         int userId = userHandle.getIdentifier();
         if (userId == Process.INVALID_UID) {
@@ -184,9 +182,8 @@
                 mAllUsersSatelliteNetworkFallbackUidCache.get(userId, new ArraySet<>());
 
         Log.i(TAG, "currentUser : role_sms_packages: " + userId + " : " + packageNames);
-        final Set<Integer> newUidsForUser = !packageNames.isEmpty()
-                ? updateSatelliteNetworkFallbackUidListCache(packageNames, userHandle)
-                : new ArraySet<>();
+        final Set<Integer> newUidsForUser =
+                updateSatelliteNetworkFallbackUidListCache(packageNames, userHandle);
         Log.i(TAG, "satellite_fallback_uid: " + newUidsForUser);
 
         // on Role change, update the multilayer request at ConnectivityService with updated
@@ -197,6 +194,11 @@
 
         mAllUsersSatelliteNetworkFallbackUidCache.put(userId, newUidsForUser);
 
+        // Update all users fallback cache for user, send cs fallback to update ML request
+        reportSatelliteNetworkFallbackUids();
+    }
+
+    private void reportSatelliteNetworkFallbackUids() {
         // Merge all uids of multiple users available
         Set<Integer> mergedSatelliteNetworkFallbackUidCache = new ArraySet<>();
         for (int i = 0; i < mAllUsersSatelliteNetworkFallbackUidCache.size(); i++) {
@@ -210,27 +212,48 @@
         mCallback.accept(mergedSatelliteNetworkFallbackUidCache);
     }
 
-    private List<String> getRoleSmsChangedPackageName(UserHandle userHandle) {
-        try {
-            return mDeps.getRoleHoldersAsUser(RoleManager.ROLE_SMS, userHandle);
-        } catch (RuntimeException e) {
-            Log.wtf(TAG, "Could not get package name at role sms change update due to: " + e);
-            return null;
-        }
-    }
-
-    /** Register OnRoleHoldersChangedListener */
     public void start() {
         mConnectivityServiceHandler.post(this::updateAllUserRoleSmsUids);
+
+        // register sms OnRoleHoldersChangedListener
         mDefaultMessageRoleListener.register();
+
+        // Monitor for User removal intent, to update satellite fallback uids.
+        IntentFilter userRemovedFilter = new IntentFilter(Intent.ACTION_USER_REMOVED);
+        mContext.registerReceiver(new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                final String action = intent.getAction();
+                if (Intent.ACTION_USER_REMOVED.equals(action)) {
+                    final UserHandle userHandle = intent.getParcelableExtra(Intent.EXTRA_USER);
+                    if (userHandle == null) return;
+                    updateSatelliteFallbackUidListOnUserRemoval(userHandle.getIdentifier());
+                } else {
+                    Log.wtf(TAG, "received unexpected intent: " + action);
+                }
+            }
+        }, userRemovedFilter, null, mConnectivityServiceHandler);
+
     }
 
     private void updateAllUserRoleSmsUids() {
-        List<UserHandle> existingUsers = mUserManager.getUserHandles(true /* excludeDying */);
+        UserManager userManager = mContext.getSystemService(UserManager.class);
+        // get existing user handles of available users
+        List<UserHandle> existingUsers = userManager.getUserHandles(true /*excludeDying*/);
+
         // Iterate through the user handles and obtain their uids with role sms and satellite
         // communication permission
+        Log.i(TAG, "existing users: " + existingUsers);
         for (UserHandle userHandle : existingUsers) {
             onRoleSmsChanged(userHandle);
         }
     }
+
+    private void updateSatelliteFallbackUidListOnUserRemoval(int userIdRemoved) {
+        Log.i(TAG, "user id removed:" + userIdRemoved);
+        if (mAllUsersSatelliteNetworkFallbackUidCache.contains(userIdRemoved)) {
+            mAllUsersSatelliteNetworkFallbackUidCache.remove(userIdRemoved);
+            reportSatelliteNetworkFallbackUids();
+        }
+    }
 }
diff --git a/staticlibs/Android.bp b/staticlibs/Android.bp
index f7b42a6..34ea9ab 100644
--- a/staticlibs/Android.bp
+++ b/staticlibs/Android.bp
@@ -39,12 +39,13 @@
         "device/com/android/net/module/util/DeviceConfigUtils.java",
         "device/com/android/net/module/util/DomainUtils.java",
         "device/com/android/net/module/util/FdEventsReader.java",
+        "device/com/android/net/module/util/FeatureVersions.java",
+        "device/com/android/net/module/util/HandlerUtils.java",
         "device/com/android/net/module/util/NetworkMonitorUtils.java",
         "device/com/android/net/module/util/PacketReader.java",
         "device/com/android/net/module/util/SharedLog.java",
         "device/com/android/net/module/util/SocketUtils.java",
-        "device/com/android/net/module/util/FeatureVersions.java",
-        "device/com/android/net/module/util/HandlerUtils.java",
+        "device/com/android/net/module/util/SyncStateMachine.java",
         // This library is used by system modules, for which the system health impact of Kotlin
         // has not yet been evaluated. Annotations may need jarjar'ing.
         // "src_devicecommon/**/*.kt",
@@ -68,6 +69,7 @@
         "//packages/modules/CaptivePortalLogin",
     ],
     static_libs: [
+        "modules-utils-statemachine",
         "net-utils-framework-common",
     ],
     libs: [
@@ -124,6 +126,8 @@
     ],
 }
 
+// The net-utils-device-common-bpf library requires the callers to contain
+// net-utils-device-common-struct-base.
 java_library {
     name: "net-utils-device-common-bpf",
     srcs: [
@@ -133,9 +137,8 @@
         "device/com/android/net/module/util/BpfUtils.java",
         "device/com/android/net/module/util/IBpfMap.java",
         "device/com/android/net/module/util/JniUtil.java",
-        "device/com/android/net/module/util/Struct.java",
+        "device/com/android/net/module/util/SingleWriterBpfMap.java",
         "device/com/android/net/module/util/TcUtils.java",
-        "framework/com/android/net/module/util/HexDump.java",
     ],
     sdk_version: "module_current",
     min_sdk_version: "30",
@@ -146,6 +149,7 @@
     libs: [
         "androidx.annotation_annotation",
         "framework-connectivity.stubs.module_lib",
+        "net-utils-device-common-struct-base",
     ],
     apex_available: [
         "com.android.tethering",
@@ -158,12 +162,9 @@
 }
 
 java_library {
-    name: "net-utils-device-common-struct",
+    name: "net-utils-device-common-struct-base",
     srcs: [
-        "device/com/android/net/module/util/Ipv6Utils.java",
-        "device/com/android/net/module/util/PacketBuilder.java",
         "device/com/android/net/module/util/Struct.java",
-        "device/com/android/net/module/util/structs/*.java",
     ],
     sdk_version: "module_current",
     min_sdk_version: "30",
@@ -176,6 +177,7 @@
     ],
     libs: [
         "androidx.annotation_annotation",
+        "framework-annotations-lib", // Required by InetAddressUtils.java
         "framework-connectivity.stubs.module_lib",
     ],
     apex_available: [
@@ -188,26 +190,30 @@
     },
 }
 
-// The net-utils-multicast-forwarding-structs library requires the callers to
-// contain net-utils-device-common-bpf.
+// The net-utils-device-common-struct library requires the callers to contain
+// net-utils-device-common-struct-base.
 java_library {
-    name: "net-utils-multicast-forwarding-structs",
+    name: "net-utils-device-common-struct",
     srcs: [
-        "device/com/android/net/module/util/structs/StructMf6cctl.java",
-        "device/com/android/net/module/util/structs/StructMif6ctl.java",
-        "device/com/android/net/module/util/structs/StructMrt6Msg.java",
+        "device/com/android/net/module/util/Ipv6Utils.java",
+        "device/com/android/net/module/util/PacketBuilder.java",
+        "device/com/android/net/module/util/structs/*.java",
     ],
     sdk_version: "module_current",
     min_sdk_version: "30",
     visibility: [
         "//packages/modules/Connectivity:__subpackages__",
+        "//packages/modules/NetworkStack:__subpackages__",
     ],
     libs: [
-        // Only Struct.java is needed from "net-utils-device-common-bpf"
-        "net-utils-device-common-bpf",
+        "androidx.annotation_annotation",
+        "framework-annotations-lib", // Required by IpUtils.java
+        "framework-connectivity.stubs.module_lib",
+        "net-utils-device-common-struct-base",
     ],
     apex_available: [
         "com.android.tethering",
+        "//apex_available:platform",
     ],
     lint: {
         strict_updatability_linting: true,
@@ -216,7 +222,7 @@
 }
 
 // The net-utils-device-common-netlink library requires the callers to contain
-// net-utils-device-common-struct.
+// net-utils-device-common-struct and net-utils-device-common-struct-base.
 java_library {
     name: "net-utils-device-common-netlink",
     srcs: [
@@ -235,6 +241,7 @@
         // statically link here because callers of this library might already have a static
         // version linked.
         "net-utils-device-common-struct",
+        "net-utils-device-common-struct-base",
     ],
     apex_available: [
         "com.android.tethering",
@@ -247,7 +254,7 @@
 }
 
 // The net-utils-device-common-ip library requires the callers to contain
-// net-utils-device-common-struct.
+// net-utils-device-common-struct and net-utils-device-common-struct-base.
 java_library {
     // TODO : this target should probably be folded into net-utils-device-common
     name: "net-utils-device-common-ip",
@@ -275,7 +282,7 @@
         "//apex_available:platform",
     ],
     lint: {
-        baseline_filename: "lint-baseline.xml",
+        strict_updatability_linting: true,
         error_checks: ["NewApi"],
     },
 }
diff --git a/staticlibs/device/com/android/net/module/util/BpfDump.java b/staticlibs/device/com/android/net/module/util/BpfDump.java
index 7549e71..4227194 100644
--- a/staticlibs/device/com/android/net/module/util/BpfDump.java
+++ b/staticlibs/device/com/android/net/module/util/BpfDump.java
@@ -81,6 +81,26 @@
     }
 
     /**
+     * Dump the BpfMap entries with base64 format encoding.
+     */
+    public static <K extends Struct, V extends Struct> void dumpRawMap(IBpfMap<K, V> map,
+            PrintWriter pw) {
+        try {
+            if (map == null) {
+                pw.println("BPF map is null");
+                return;
+            }
+            if (map.isEmpty()) {
+                pw.println("No entries");
+                return;
+            }
+            map.forEach((k, v) -> pw.println(toBase64EncodedString(k, v)));
+        } catch (ErrnoException e) {
+            pw.println("Map dump end with error: " + Os.strerror(e.errno));
+        }
+    }
+
+    /**
      * Dump the BpfMap name and entries
      */
     public static <K extends Struct, V extends Struct> void dumpMap(IBpfMap<K, V> map,
diff --git a/staticlibs/device/com/android/net/module/util/BpfMap.java b/staticlibs/device/com/android/net/module/util/BpfMap.java
index da77ae8..0fbc25d 100644
--- a/staticlibs/device/com/android/net/module/util/BpfMap.java
+++ b/staticlibs/device/com/android/net/module/util/BpfMap.java
@@ -15,6 +15,7 @@
  */
 package com.android.net.module.util;
 
+import static android.system.OsConstants.EBUSY;
 import static android.system.OsConstants.EEXIST;
 import static android.system.OsConstants.ENOENT;
 
@@ -52,6 +53,9 @@
     public static final int BPF_F_RDONLY = 1 << 3;
     public static final int BPF_F_WRONLY = 1 << 4;
 
+    // magic value for jni consumption, invalid from kernel point of view
+    public static final int BPF_F_RDWR_EXCLUSIVE = BPF_F_RDONLY | BPF_F_WRONLY;
+
     public static final int BPF_MAP_TYPE_HASH = 1;
 
     private static final int BPF_F_NO_PREALLOC = 1;
@@ -69,6 +73,12 @@
     private static ConcurrentHashMap<Pair<String, Integer>, ParcelFileDescriptor> sFdCache =
             new ConcurrentHashMap<>();
 
+    private static ParcelFileDescriptor checkModeExclusivity(ParcelFileDescriptor fd, int mode)
+            throws ErrnoException {
+        if (mode == BPF_F_RDWR_EXCLUSIVE) throw new ErrnoException("cachedBpfFdGet", EBUSY);
+        return fd;
+    }
+
     private static ParcelFileDescriptor cachedBpfFdGet(String path, int mode,
                                                        int keySize, int valueSize)
             throws ErrnoException, NullPointerException {
@@ -79,12 +89,12 @@
         var key = Pair.create(path, (mode << 26) ^ (keySize << 16) ^ valueSize);
         // unlocked fetch is safe: map is concurrent read capable, and only inserted into
         ParcelFileDescriptor fd = sFdCache.get(key);
-        if (fd != null) return fd;
+        if (fd != null) return checkModeExclusivity(fd, mode);
         // ok, no cached fd present, need to grab a lock
         synchronized (BpfMap.class) {
             // need to redo the check
             fd = sFdCache.get(key);
-            if (fd != null) return fd;
+            if (fd != null) return checkModeExclusivity(fd, mode);
             // okay, we really haven't opened this before...
             fd = ParcelFileDescriptor.adoptFd(nativeBpfFdGet(path, mode, keySize, valueSize));
             sFdCache.put(key, fd);
diff --git a/staticlibs/device/com/android/net/module/util/BpfUtils.java b/staticlibs/device/com/android/net/module/util/BpfUtils.java
index cdd6fd7..a41eeba 100644
--- a/staticlibs/device/com/android/net/module/util/BpfUtils.java
+++ b/staticlibs/device/com/android/net/module/util/BpfUtils.java
@@ -39,6 +39,15 @@
     public static final int BPF_CGROUP_INET_SOCK_CREATE = 2;
     public static final int BPF_CGROUP_INET4_BIND = 8;
     public static final int BPF_CGROUP_INET6_BIND = 9;
+    public static final int BPF_CGROUP_INET4_CONNECT = 10;
+    public static final int BPF_CGROUP_INET6_CONNECT = 11;
+    public static final int BPF_CGROUP_UDP4_SENDMSG = 14;
+    public static final int BPF_CGROUP_UDP6_SENDMSG = 15;
+    public static final int BPF_CGROUP_UDP4_RECVMSG = 19;
+    public static final int BPF_CGROUP_UDP6_RECVMSG = 20;
+    public static final int BPF_CGROUP_GETSOCKOPT = 21;
+    public static final int BPF_CGROUP_SETSOCKOPT = 22;
+    public static final int BPF_CGROUP_INET_SOCK_RELEASE = 34;
 
     // Note: This is only guaranteed to be accurate on U+ devices. It is likely to be accurate
     // on T+ devices as well, but this is not guaranteed.
diff --git a/staticlibs/device/com/android/net/module/util/DeviceConfigUtils.java b/staticlibs/device/com/android/net/module/util/DeviceConfigUtils.java
index 5b7cbb8..0426ace 100644
--- a/staticlibs/device/com/android/net/module/util/DeviceConfigUtils.java
+++ b/staticlibs/device/com/android/net/module/util/DeviceConfigUtils.java
@@ -17,6 +17,7 @@
 package com.android.net.module.util;
 
 import static android.content.pm.PackageManager.MATCH_SYSTEM_ONLY;
+import static android.provider.DeviceConfig.NAMESPACE_CAPTIVEPORTALLOGIN;
 import static android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY;
 import static android.provider.DeviceConfig.NAMESPACE_TETHERING;
 
@@ -203,6 +204,29 @@
                 () -> getTetheringModuleVersion(context));
     }
 
+    /**
+     * Check whether or not one specific experimental feature for a particular namespace from
+     * {@link DeviceConfig} is enabled by comparing module package version
+     * with current version of property. If this property version is valid, the corresponding
+     * experimental feature would be enabled, otherwise disabled.
+     *
+     * This is useful to ensure that if a module install is rolled back, flags are not left fully
+     * rolled out on a version where they have not been well tested.
+     *
+     * If the feature is disabled by default and enabled by flag push, this method should be used.
+     * If the feature is enabled by default and disabled by flag push (kill switch),
+     * {@link #isCaptivePortalLoginFeatureNotChickenedOut(Context, String)} should be used.
+     *
+     * @param context The global context information about an app environment.
+     * @param name The name of the property to look up.
+     * @return true if this feature is enabled, or false if disabled.
+     */
+    public static boolean isCaptivePortalLoginFeatureEnabled(@NonNull Context context,
+            @NonNull String name) {
+        return isFeatureEnabled(NAMESPACE_CAPTIVEPORTALLOGIN, name, false /* defaultEnabled */,
+                () -> getPackageVersion(context));
+    }
+
     private static boolean isFeatureEnabled(@NonNull String namespace,
             String name, boolean defaultEnabled, Supplier<Long> packageVersionSupplier) {
         final int flagValue = getDeviceConfigPropertyInt(namespace, name, 0 /* default value */);
diff --git a/staticlibs/device/com/android/net/module/util/PacketBuilder.java b/staticlibs/device/com/android/net/module/util/PacketBuilder.java
index 33e5bfa..a2dbd81 100644
--- a/staticlibs/device/com/android/net/module/util/PacketBuilder.java
+++ b/staticlibs/device/com/android/net/module/util/PacketBuilder.java
@@ -24,10 +24,13 @@
 import static com.android.net.module.util.IpUtils.ipChecksum;
 import static com.android.net.module.util.IpUtils.tcpChecksum;
 import static com.android.net.module.util.IpUtils.udpChecksum;
+import static com.android.net.module.util.NetworkStackConstants.IPPROTO_FRAGMENT;
 import static com.android.net.module.util.NetworkStackConstants.IPV4_CHECKSUM_OFFSET;
 import static com.android.net.module.util.NetworkStackConstants.IPV4_LENGTH_OFFSET;
+import static com.android.net.module.util.NetworkStackConstants.IPV6_FRAGMENT_HEADER_LEN;
 import static com.android.net.module.util.NetworkStackConstants.IPV6_HEADER_LEN;
 import static com.android.net.module.util.NetworkStackConstants.IPV6_LEN_OFFSET;
+import static com.android.net.module.util.NetworkStackConstants.IPV6_PROTOCOL_OFFSET;
 import static com.android.net.module.util.NetworkStackConstants.TCP_CHECKSUM_OFFSET;
 import static com.android.net.module.util.NetworkStackConstants.UDP_CHECKSUM_OFFSET;
 import static com.android.net.module.util.NetworkStackConstants.UDP_LENGTH_OFFSET;
@@ -37,6 +40,7 @@
 import androidx.annotation.NonNull;
 
 import com.android.net.module.util.structs.EthernetHeader;
+import com.android.net.module.util.structs.FragmentHeader;
 import com.android.net.module.util.structs.Ipv4Header;
 import com.android.net.module.util.structs.Ipv6Header;
 import com.android.net.module.util.structs.TcpHeader;
@@ -47,6 +51,10 @@
 import java.net.Inet6Address;
 import java.nio.BufferOverflowException;
 import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Random;
 
 /**
  * The class is used to build a packet.
@@ -210,6 +218,20 @@
         }
     }
 
+    private void writeFragmentHeader(ByteBuffer buffer, short nextHeader, int offset,
+            boolean mFlag, int id) throws IOException {
+        if ((offset & 7) != 0) {
+            throw new IOException("Invalid offset value, must be multiple of 8");
+        }
+        final FragmentHeader fragmentHeader = new FragmentHeader(nextHeader,
+                offset | (mFlag ? 1 : 0), id);
+        try {
+            fragmentHeader.writeToByteBuffer(buffer);
+        } catch (IllegalArgumentException | BufferOverflowException e) {
+            throw new IOException("Error writing to buffer: ", e);
+        }
+    }
+
     /**
      * Finalize the packet.
      *
@@ -219,9 +241,31 @@
      */
     @NonNull
     public ByteBuffer finalizePacket() throws IOException {
+        // If the packet is finalized with L2 mtu greater than or equal to its current size, it will
+        // either return a List of size 1 or throw an IOException if something goes wrong.
+        return finalizePacket(mBuffer.position()).get(0);
+    }
+
+    /**
+     * Finalizes the packet with specified link MTU.
+     *
+     * Call after writing L4 header (no payload) or L4 payload to the buffer used by the builder.
+     * L3 header length, L3 header checksum and L4 header checksum are calculated and written back
+     * after finalization.
+     *
+     * @param l2mtu the maximum size, in bytes, of each individual packet. If the packet size
+     *              exceeds the l2mtu, it will be fragmented into smaller packets.
+     * @return a list of packet(s), each containing a portion of the original L3 payload.
+     */
+    @NonNull
+    public List<ByteBuffer> finalizePacket(int l2mtu) throws IOException {
         // [1] Finalize IPv4 or IPv6 header.
         int ipHeaderOffset = INVALID_OFFSET;
         if (mIpv4HeaderOffset != INVALID_OFFSET) {
+            if (mBuffer.position() > l2mtu) {
+                throw new IOException("IPv4 fragmentation is not supported");
+            }
+
             ipHeaderOffset = mIpv4HeaderOffset;
 
             // Populate the IPv4 totalLength field.
@@ -243,12 +287,15 @@
         }
 
         // [2] Finalize TCP or UDP header.
+        final int ipPayloadOffset;
         if (mTcpHeaderOffset != INVALID_OFFSET) {
+            ipPayloadOffset = mTcpHeaderOffset;
             // Populate the TCP header checksum field.
             mBuffer.putShort(mTcpHeaderOffset + TCP_CHECKSUM_OFFSET, tcpChecksum(mBuffer,
                     ipHeaderOffset /* ipOffset */, mTcpHeaderOffset /* transportOffset */,
                     mBuffer.position() - mTcpHeaderOffset /* transportLen */));
         } else if (mUdpHeaderOffset != INVALID_OFFSET) {
+            ipPayloadOffset = mUdpHeaderOffset;
             // Populate the UDP header length field.
             mBuffer.putShort(mUdpHeaderOffset + UDP_LENGTH_OFFSET,
                     (short) (mBuffer.position() - mUdpHeaderOffset));
@@ -257,11 +304,81 @@
             mBuffer.putShort(mUdpHeaderOffset + UDP_CHECKSUM_OFFSET, udpChecksum(mBuffer,
                     ipHeaderOffset /* ipOffset */, mUdpHeaderOffset /* transportOffset */));
         } else {
-            throw new IOException("Packet is missing neither TCP nor UDP header");
+            throw new IOException("Packet has neither TCP nor UDP header");
         }
 
-        mBuffer.flip();
-        return mBuffer;
+        if (mBuffer.position() <= l2mtu) {
+            mBuffer.flip();
+            return Arrays.asList(mBuffer);
+        }
+
+        // IPv6 Packet is fragmented into multiple smaller packets that would fit within the link
+        // MTU.
+        // Refer to https://tools.ietf.org/html/rfc2460
+        //
+        // original packet:
+        // +------------------+--------------+--------------+--//--+----------+
+        // |  Unfragmentable  |    first     |    second    |      |   last   |
+        // |       Part       |   fragment   |   fragment   | .... | fragment |
+        // +------------------+--------------+--------------+--//--+----------+
+        //
+        // fragment packets:
+        // +------------------+--------+--------------+
+        // |  Unfragmentable  |Fragment|    first     |
+        // |       Part       | Header |   fragment   |
+        // +------------------+--------+--------------+
+        //
+        // +------------------+--------+--------------+
+        // |  Unfragmentable  |Fragment|    second    |
+        // |       Part       | Header |   fragment   |
+        // +------------------+--------+--------------+
+        //                       o
+        //                       o
+        //                       o
+        // +------------------+--------+----------+
+        // |  Unfragmentable  |Fragment|   last   |
+        // |       Part       | Header | fragment |
+        // +------------------+--------+----------+
+        final List<ByteBuffer> fragments = new ArrayList<>();
+        final int totalPayloadLen = mBuffer.position() - ipPayloadOffset;
+        final int perPacketPayloadLen = l2mtu - ipPayloadOffset - IPV6_FRAGMENT_HEADER_LEN;
+        final short protocol = (short) Byte.toUnsignedInt(
+                mBuffer.get(mIpv6HeaderOffset + IPV6_PROTOCOL_OFFSET));
+        Random random = new Random();
+        final int id = random.nextInt(Integer.MAX_VALUE);
+        int startOffset = 0;
+        // Copy the packet content to a byte array.
+        byte[] packet = new byte[mBuffer.position()];
+        // The ByteBuffer#get(int index, byte[] dst) method is only available in API level 35 and
+        // above. Here, we use a more primitive approach: reposition the ByteBuffer to the beginning
+        // before copying, then return its position to the end afterward.
+        mBuffer.position(0);
+        mBuffer.get(packet);
+        mBuffer.position(packet.length);
+        while (startOffset < totalPayloadLen) {
+            int copyPayloadLen = Math.min(perPacketPayloadLen, totalPayloadLen - startOffset);
+            // The data portion must be broken into segments aligned with 8-octet boundaries.
+            // Therefore, the payload length should be a multiple of 8 bytes for all fragments
+            // except the last one.
+            // See https://datatracker.ietf.org/doc/html/rfc791 section 3.2
+            if (copyPayloadLen != totalPayloadLen - startOffset) {
+                copyPayloadLen &= ~7;
+            }
+            ByteBuffer fragment = ByteBuffer.allocate(ipPayloadOffset + IPV6_FRAGMENT_HEADER_LEN
+                    + copyPayloadLen);
+            fragment.put(packet, 0, ipPayloadOffset);
+            writeFragmentHeader(fragment, protocol, startOffset,
+                    startOffset + copyPayloadLen < totalPayloadLen, id);
+            fragment.put(packet, ipPayloadOffset + startOffset, copyPayloadLen);
+            fragment.putShort(mIpv6HeaderOffset + IPV6_LEN_OFFSET,
+                    (short) (IPV6_FRAGMENT_HEADER_LEN + copyPayloadLen));
+            fragment.put(mIpv6HeaderOffset + IPV6_PROTOCOL_OFFSET, (byte) IPPROTO_FRAGMENT);
+            fragment.flip();
+            fragments.add(fragment);
+            startOffset += copyPayloadLen;
+        }
+
+        return fragments;
     }
 
     /**
diff --git a/staticlibs/device/com/android/net/module/util/SingleWriterBpfMap.java b/staticlibs/device/com/android/net/module/util/SingleWriterBpfMap.java
new file mode 100644
index 0000000..cd6bfec
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/SingleWriterBpfMap.java
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.net.module.util;
+
+import android.os.Build;
+import android.system.ErrnoException;
+import android.util.Pair;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.RequiresApi;
+
+import java.util.HashMap;
+import java.util.NoSuchElementException;
+
+/**
+ * Subclass of BpfMap for maps that are only ever written by one userspace writer.
+ *
+ * This class stores all map data in a userspace HashMap in addition to in the BPF map. This makes
+ * reads (but not iterations) much faster because they do not require a system call or converting
+ * the raw map read to the Value struct. See, e.g., b/343166906 .
+ *
+ * Users of this class must ensure that no BPF program ever writes to the map, and that all
+ * userspace writes to the map occur through this object. Other userspace code may still read from
+ * the map; only writes are required to go through this object.
+ *
+ * Reads and writes to this object are thread-safe and internally synchronized. The read and write
+ * methods are synchronized to ensure that current writers always result in a consistent internal
+ * state (without synchronization, two concurrent writes might update the underlying map and the
+ * cache in the opposite order, resulting in the cache being out of sync with the map).
+ *
+ * getNextKey and iteration over the map are not synchronized or cached and always access the
+ * isunderlying map. The values returned by these calls may be temporarily out of sync with the
+ * values read and written through this object.
+ *
+ * TODO: consider caching reads on iterations as well. This is not trivial because the semantics for
+ * iterating BPF maps require passing in the previously-returned key, and Java iterators only
+ * support iterating from the beginning. It could be done by implementing forEach and possibly by
+ * making getFirstKey and getNextKey private (if no callers are using them). Because HashMap is not
+ * thread-safe, implementing forEach would require either making that method synchronized (and
+ * block reads and updates from other threads until iteration is complete) or switching the
+ * internal HashMap to ConcurrentHashMap.
+ *
+ * @param <K> the key of the map.
+ * @param <V> the value of the map.
+ */
+@RequiresApi(Build.VERSION_CODES.S)
+public class SingleWriterBpfMap<K extends Struct, V extends Struct> extends BpfMap<K, V> {
+    // HashMap instead of ArrayMap because it performs better on larger maps, and many maps used in
+    // our code can contain hundreds of items.
+    private final HashMap<K, V> mCache = new HashMap<>();
+
+    // This should only ever be called (hence private) once for a given 'path'.
+    // Java-wise what matters is the entire {path, key, value} triplet,
+    // but of course the kernel exclusive lock is just on the path (fd),
+    // and any BpfMap has (or should have...) well defined key/value types
+    // (or at least their sizes) so in practice it doesn't really matter.
+    private SingleWriterBpfMap(@NonNull final String path, final Class<K> key,
+            final Class<V> value) throws ErrnoException, NullPointerException {
+        super(path, BPF_F_RDWR_EXCLUSIVE, key, value);
+
+        // Populate cache with the current map contents.
+        K currentKey = super.getFirstKey();
+        while (currentKey != null) {
+            mCache.put(currentKey, super.getValue(currentKey));
+            currentKey = super.getNextKey(currentKey);
+        }
+    }
+
+    // This allows reuse of SingleWriterBpfMap objects for the same {path, keyClass, valueClass}.
+    // These are never destroyed, so once created the lock is (effectively) held till process death
+    // (even if fixed, there would still be a write-only fd cache in underlying BpfMap base class).
+    private static final HashMap<Pair<String, Pair<Class, Class>>, SingleWriterBpfMap>
+            singletonCache = new HashMap<>();
+
+    // This is the public 'factory method' that (creates if needed and) returns a singleton instance
+    // for a given map.  This holds an exclusive lock and has a permanent write-through cache.
+    // It will not be released until process death (or at least unload of the relevant class loader)
+    public synchronized static <KK extends Struct, VV extends Struct> SingleWriterBpfMap<KK,VV>
+            getSingleton(@NonNull final String path, final Class<KK> key, final Class<VV> value)
+            throws ErrnoException, NullPointerException {
+        var cacheKey = new Pair<>(path, new Pair<Class,Class>(key, value));
+        if (!singletonCache.containsKey(cacheKey))
+            singletonCache.put(cacheKey, new SingleWriterBpfMap(path, key, value));
+        return singletonCache.get(cacheKey);
+    }
+
+    @Override
+    public synchronized void updateEntry(K key, V value) throws ErrnoException {
+        super.updateEntry(key, value);
+        mCache.put(key, value);
+    }
+
+    @Override
+    public synchronized void insertEntry(K key, V value)
+            throws ErrnoException, IllegalStateException {
+        super.insertEntry(key, value);
+        mCache.put(key, value);
+    }
+
+    @Override
+    public synchronized void replaceEntry(K key, V value)
+            throws ErrnoException, NoSuchElementException {
+        super.replaceEntry(key, value);
+        mCache.put(key, value);
+    }
+
+    @Override
+    public synchronized boolean insertOrReplaceEntry(K key, V value) throws ErrnoException {
+        final boolean ret = super.insertOrReplaceEntry(key, value);
+        mCache.put(key, value);
+        return ret;
+    }
+
+    @Override
+    public synchronized boolean deleteEntry(K key) throws ErrnoException {
+        final boolean ret = super.deleteEntry(key);
+        mCache.remove(key);
+        return ret;
+    }
+
+    @Override
+    public synchronized boolean containsKey(@NonNull K key) throws ErrnoException {
+        return mCache.containsKey(key);
+    }
+
+    @Override
+    public synchronized V getValue(@NonNull K key) throws ErrnoException {
+        return mCache.get(key);
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/SocketUtils.java b/staticlibs/device/com/android/net/module/util/SocketUtils.java
index 5e6a6c6..51671a6 100644
--- a/staticlibs/device/com/android/net/module/util/SocketUtils.java
+++ b/staticlibs/device/com/android/net/module/util/SocketUtils.java
@@ -19,8 +19,7 @@
 import static android.net.util.SocketUtils.closeSocket;
 
 import android.annotation.NonNull;
-import android.annotation.RequiresApi;
-import android.os.Build;
+import android.annotation.SuppressLint;
 import android.system.NetlinkSocketAddress;
 
 import java.io.FileDescriptor;
@@ -41,7 +40,11 @@
     /**
      * Make a socket address to communicate with netlink.
      */
-    @NonNull @RequiresApi(Build.VERSION_CODES.S)
+    // NetlinkSocketAddress was CorePlatformApi on R and linter warns this is available on S+.
+    // android.net.util.SocketUtils.makeNetlinkSocketAddress can be used instead, but this method
+    // has been used on R, so suppress the linter and keep as it is.
+    @SuppressLint("NewApi")
+    @NonNull
     public static SocketAddress makeNetlinkSocketAddress(int portId, int groupsMask) {
         return new NetlinkSocketAddress(portId, groupsMask);
     }
diff --git a/Tethering/src/com/android/networkstack/tethering/util/SyncStateMachine.java b/staticlibs/device/com/android/net/module/util/SyncStateMachine.java
similarity index 96%
rename from Tethering/src/com/android/networkstack/tethering/util/SyncStateMachine.java
rename to staticlibs/device/com/android/net/module/util/SyncStateMachine.java
index a17eb26..da184d3 100644
--- a/Tethering/src/com/android/networkstack/tethering/util/SyncStateMachine.java
+++ b/staticlibs/device/com/android/net/module/util/SyncStateMachine.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.networkstack.tethering.util;
+package com.android.net.module.util;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -165,6 +165,11 @@
      * The message is processed sequentially, so calling this method recursively is not permitted.
      * In other words, using this method inside State#enter, State#exit, or State#processMessage
      * is incorrect and will result in an IllegalStateException.
+     *
+     * @param what is assigned to Message.what
+     * @param arg1 is assigned to Message.arg1
+     * @param arg2 is assigned to Message.arg2
+     * @param obj  is assigned to Message.obj
      */
     public final void processMessage(int what, int arg1, int arg2, @Nullable Object obj) {
         ensureCorrectThread();
@@ -189,6 +194,15 @@
         mCurrentlyProcessing = Integer.MIN_VALUE;
     }
 
+    /**
+     * Synchronously process a message and perform state transition.
+     *
+     * @param what is assigned to Message.what.
+     */
+    public final void processMessage(int what) {
+        processMessage(what, 0, 0, null);
+    }
+
     private void maybeProcessSelfMessageQueue() {
         while (!mSelfMsgQueue.isEmpty()) {
             currentStateProcessMessageThenPerformTransitions(mSelfMsgQueue.poll());
diff --git a/staticlibs/device/com/android/net/module/util/TcUtils.java b/staticlibs/device/com/android/net/module/util/TcUtils.java
index 9d2fb7f..a6b222f 100644
--- a/staticlibs/device/com/android/net/module/util/TcUtils.java
+++ b/staticlibs/device/com/android/net/module/util/TcUtils.java
@@ -101,4 +101,12 @@
      * @throws IOException
      */
     public static native void tcQdiscAddDevClsact(int ifIndex) throws IOException;
+
+    /**
+     * Attempt to fetch a bpf program from a path.
+     * Return true on success, false on non-existence or any other failure.
+     *
+     * @param bpfProgPath
+     */
+    public static native boolean isBpfProgramUsable(String bpfProgPath);
 }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/NdOption.java b/staticlibs/device/com/android/net/module/util/netlink/NdOption.java
index defc88a..4f58380 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/NdOption.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/NdOption.java
@@ -67,6 +67,9 @@
             case StructNdOptRdnss.TYPE:
                 return StructNdOptRdnss.parse(buf);
 
+            case StructNdOptPio.TYPE:
+                return StructNdOptPio.parse(buf);
+
             default:
                 int newPosition = Math.min(buf.limit(), buf.position() + length * 8);
                 buf.position(newPosition);
diff --git a/staticlibs/device/com/android/net/module/util/netlink/NduseroptMessage.java b/staticlibs/device/com/android/net/module/util/netlink/NduseroptMessage.java
index 2e9a99b..586f19d 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/NduseroptMessage.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/NduseroptMessage.java
@@ -156,8 +156,9 @@
 
     @Override
     public String toString() {
-        return String.format("Nduseroptmsg(%d, %d, %d, %d, %d, %s)",
+        return String.format("Nduseroptmsg(family:%d, opts_len:%d, ifindex:%d, icmp_type:%d, "
+                + "icmp_code:%d, srcaddr: %s, %s)",
                 family, opts_len, ifindex, Byte.toUnsignedInt(icmp_type),
-                Byte.toUnsignedInt(icmp_code), srcaddr.getHostAddress());
+                Byte.toUnsignedInt(icmp_code), srcaddr.getHostAddress(), option);
     }
 }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/NetlinkConstants.java b/staticlibs/device/com/android/net/module/util/netlink/NetlinkConstants.java
index ad7a4d7..1896de6 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/NetlinkConstants.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/NetlinkConstants.java
@@ -123,6 +123,7 @@
     public static final short RTM_NEWRULE                   = 32;
     public static final short RTM_DELRULE                   = 33;
     public static final short RTM_GETRULE                   = 34;
+    public static final short RTM_NEWPREFIX                 = 52;
     public static final short RTM_NEWNDUSEROPT              = 68;
 
     // Netfilter netlink message types are presented by two bytes: high byte subsystem and
@@ -148,6 +149,8 @@
     public static final int RTMGRP_IPV4_IFADDR = 0x10;
     public static final int RTMGRP_IPV6_IFADDR = 0x100;
     public static final int RTMGRP_IPV6_ROUTE  = 0x400;
+    public static final int RTNLGRP_IPV6_PREFIX = 18;
+    public static final int RTMGRP_IPV6_PREFIX = 1 << (RTNLGRP_IPV6_PREFIX - 1);
     public static final int RTNLGRP_ND_USEROPT = 20;
     public static final int RTMGRP_ND_USEROPT = 1 << (RTNLGRP_ND_USEROPT - 1);
 
@@ -207,6 +210,7 @@
             case RTM_NEWRULE: return "RTM_NEWRULE";
             case RTM_DELRULE: return "RTM_DELRULE";
             case RTM_GETRULE: return "RTM_GETRULE";
+            case RTM_NEWPREFIX: return "RTM_NEWPREFIX";
             case RTM_NEWNDUSEROPT: return "RTM_NEWNDUSEROPT";
             default: return "unknown RTM type: " + String.valueOf(nlmType);
         }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
index 92ec0c4..df7010e 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
@@ -41,6 +41,10 @@
     public static final short IFLA_ADDRESS   = 1;
     public static final short IFLA_IFNAME    = 3;
     public static final short IFLA_MTU       = 4;
+    public static final short IFLA_INET6_ADDR_GEN_MODE = 8;
+    public static final short IFLA_AF_SPEC = 26;
+
+    public static final short IN6_ADDR_GEN_MODE_NONE = 1;
 
     private int mMtu;
     @NonNull
diff --git a/staticlibs/device/com/android/net/module/util/netlink/StructIfinfoMsg.java b/staticlibs/device/com/android/net/module/util/netlink/StructIfinfoMsg.java
index 02d1574..28eeaea 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/StructIfinfoMsg.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/StructIfinfoMsg.java
@@ -49,7 +49,7 @@
     @Field(order = 4, type = Type.U32)
     public final long change;
 
-    StructIfinfoMsg(short family, int type, int index, long flags, long change) {
+    public StructIfinfoMsg(short family, int type, int index, long flags, long change) {
         this.family = family;
         this.type = type;
         this.index = index;
diff --git a/staticlibs/device/com/android/net/module/util/netlink/StructNdOptPio.java b/staticlibs/device/com/android/net/module/util/netlink/StructNdOptPio.java
new file mode 100644
index 0000000..65541eb
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/netlink/StructNdOptPio.java
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.netlink;
+
+import android.net.IpPrefix;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
+import com.android.net.module.util.HexDump;
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.structs.PrefixInformationOption;
+
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+import java.util.Objects;
+
+/**
+ * The Prefix Information Option. RFC 4861.
+ *
+ * 0                   1                   2                   3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |     Type      |    Length     | Prefix Length |L|A|R|P| Rsvd1 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                         Valid Lifetime                        |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                       Preferred Lifetime                      |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                           Reserved2                           |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                                                               |
+ * +                                                               +
+ * |                                                               |
+ * +                            Prefix                             +
+ * |                                                               |
+ * +                                                               +
+ * |                                                               |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+public class StructNdOptPio extends NdOption {
+    private static final String TAG = StructNdOptPio.class.getSimpleName();
+    public static final int TYPE = 3;
+    public static final byte LENGTH = 4; // Length in 8-byte units
+
+    public final byte flags;
+    public final long preferred;
+    public final long valid;
+    @NonNull
+    public final IpPrefix prefix;
+
+    public StructNdOptPio(byte flags, long preferred, long valid, @NonNull final IpPrefix prefix) {
+        super((byte) TYPE, LENGTH);
+        this.prefix = Objects.requireNonNull(prefix, "prefix must not be null");
+        this.flags = flags;
+        this.preferred = preferred;
+        this.valid = valid;
+    }
+
+    /**
+     * Parses a PrefixInformation option from a {@link ByteBuffer}.
+     *
+     * @param buf The buffer from which to parse the option. The buffer's byte order must be
+     *            {@link java.nio.ByteOrder#BIG_ENDIAN}.
+     * @return the parsed option, or {@code null} if the option could not be parsed successfully.
+     */
+    public static StructNdOptPio parse(@NonNull ByteBuffer buf) {
+        if (buf == null || buf.remaining() < LENGTH * 8) return null;
+        try {
+            final PrefixInformationOption pio = Struct.parse(PrefixInformationOption.class, buf);
+            if (pio.type != TYPE) {
+                throw new IllegalArgumentException("Invalid type " + pio.type);
+            }
+            if (pio.length != LENGTH) {
+                throw new IllegalArgumentException("Invalid length " + pio.length);
+            }
+            return new StructNdOptPio(pio.flags, pio.preferredLifetime, pio.validLifetime,
+                    pio.getIpPrefix());
+        } catch (IllegalArgumentException | BufferUnderflowException e) {
+            // Not great, but better than throwing an exception that might crash the caller.
+            // Convention in this package is that null indicates that the option was truncated
+            // or malformed, so callers must already handle it.
+            Log.d(TAG, "Invalid PIO option: " + e);
+            return null;
+        }
+    }
+
+    protected void writeToByteBuffer(ByteBuffer buf) {
+        buf.put(PrefixInformationOption.build(prefix, flags, valid, preferred));
+    }
+
+    /** Outputs the wire format of the option to a new big-endian ByteBuffer. */
+    public ByteBuffer toByteBuffer() {
+        final ByteBuffer buf = ByteBuffer.allocate(Struct.getSize(PrefixInformationOption.class));
+        writeToByteBuffer(buf);
+        buf.flip();
+        return buf;
+    }
+
+    @Override
+    @NonNull
+    public String toString() {
+        return String.format("NdOptPio(flags:%s, preferred lft:%s, valid lft:%s, prefix:%s)",
+                HexDump.toHexString(flags), preferred, valid, prefix);
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/netlink/StructPrefixCacheInfo.java b/staticlibs/device/com/android/net/module/util/netlink/StructPrefixCacheInfo.java
new file mode 100644
index 0000000..cfaa6e1
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/netlink/StructPrefixCacheInfo.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.netlink;
+
+import androidx.annotation.NonNull;
+
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Field;
+import com.android.net.module.util.Struct.Type;
+
+import java.nio.ByteBuffer;
+
+/**
+ * struct prefix_cacheinfo {
+ *     __u32 preferred_time;
+ *     __u32 valid_time;
+ * }
+ *
+ * see also:
+ *
+ *     include/uapi/linux/if_addr.h
+ *
+ * @hide
+ */
+public class StructPrefixCacheInfo extends Struct {
+    public static final int STRUCT_SIZE = 8;
+
+    @Field(order = 0, type = Type.U32)
+    public final long preferred_time;
+    @Field(order = 1, type = Type.U32)
+    public final long valid_time;
+
+    StructPrefixCacheInfo(long preferred, long valid) {
+        this.preferred_time = preferred;
+        this.valid_time = valid;
+    }
+
+    /**
+     * Parse a prefix_cacheinfo struct from a {@link ByteBuffer}.
+     *
+     * @param byteBuffer The buffer from which to parse the prefix_cacheinfo.
+     * @return the parsed prefix_cacheinfo struct, or throw IllegalArgumentException if the
+     *         prefix_cacheinfo struct could not be parsed successfully(for example, if it was
+     *         truncated).
+     */
+    public static StructPrefixCacheInfo parse(@NonNull final ByteBuffer byteBuffer) {
+        if (byteBuffer.remaining() < STRUCT_SIZE) {
+            throw new IllegalArgumentException("Invalid bytebuffer remaining size "
+                    + byteBuffer.remaining() + " for prefix_cacheinfo attribute");
+        }
+
+        // The ByteOrder must already have been set to native order.
+        return Struct.parse(StructPrefixCacheInfo.class, byteBuffer);
+    }
+
+    /**
+     * Write a prefix_cacheinfo struct to {@link ByteBuffer}.
+     */
+    public void pack(@NonNull final ByteBuffer byteBuffer) {
+        // The ByteOrder must already have been set to native order.
+        writeToByteBuffer(byteBuffer);
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/netlink/StructPrefixMsg.java b/staticlibs/device/com/android/net/module/util/netlink/StructPrefixMsg.java
new file mode 100644
index 0000000..504d6c7
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/netlink/StructPrefixMsg.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.netlink;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Field;
+import com.android.net.module.util.Struct.Type;
+
+import java.nio.ByteBuffer;
+
+/**
+ * struct prefixmsg {
+ *     unsigned char  prefix_family;
+ *     unsigned char  prefix_pad1;
+ *     unsigned short prefix_pad2;
+ *     int            prefix_ifindex;
+ *     unsigned char  prefix_type;
+ *     unsigned char  prefix_len;
+ *     unsigned char  prefix_flags;
+ *     unsigned char  prefix_pad3;
+ * }
+ *
+ * see also:
+ *
+ *     include/uapi/linux/rtnetlink.h
+ *
+ * @hide
+ */
+public class StructPrefixMsg extends Struct {
+    // Already aligned.
+    public static final int STRUCT_SIZE = 12;
+
+    @Field(order = 0, type = Type.U8, padding = 3)
+    public final short prefix_family;
+    @Field(order = 1, type = Type.S32)
+    public final int prefix_ifindex;
+    @Field(order = 2, type = Type.U8)
+    public final short prefix_type;
+    @Field(order = 3, type = Type.U8)
+    public final short prefix_len;
+    @Field(order = 4, type = Type.U8, padding = 1)
+    public final short prefix_flags;
+
+    @VisibleForTesting
+    public StructPrefixMsg(short family, int ifindex, short type, short len, short flags) {
+        this.prefix_family = family;
+        this.prefix_ifindex = ifindex;
+        this.prefix_type = type;
+        this.prefix_len = len;
+        this.prefix_flags = flags;
+    }
+
+    /**
+     * Parse a prefixmsg struct from a {@link ByteBuffer}.
+     *
+     * @param byteBuffer The buffer from which to parse the prefixmsg.
+     * @return the parsed prefixmsg struct, or throw IllegalArgumentException if the prefixmsg
+     *         struct could not be parsed successfully (for example, if it was truncated).
+     */
+    public static StructPrefixMsg parse(@NonNull final ByteBuffer byteBuffer) {
+        if (byteBuffer.remaining() < STRUCT_SIZE) {
+            throw new IllegalArgumentException("Invalid bytebuffer remaining size "
+                    + byteBuffer.remaining() + "for prefix_msg struct.");
+        }
+
+        // The ByteOrder must already have been set to native order.
+        return Struct.parse(StructPrefixMsg.class, byteBuffer);
+    }
+
+    /**
+     * Write a prefixmsg struct to {@link ByteBuffer}.
+     */
+    public void pack(@NonNull final ByteBuffer byteBuffer) {
+        // The ByteOrder must already have been set to native order.
+        writeToByteBuffer(byteBuffer);
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/structs/FragmentHeader.java b/staticlibs/device/com/android/net/module/util/structs/FragmentHeader.java
new file mode 100644
index 0000000..3da6a38
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/structs/FragmentHeader.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.structs;
+
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Field;
+import com.android.net.module.util.Struct.Type;
+
+/**
+ * IPv6 Fragment Extension header, as per https://tools.ietf.org/html/rfc2460.
+ *
+ * 0                   1                   2                   3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |  Next Header  |   Reserved    |      Fragment Offset    |Res|M|
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                         Identification                        |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+public class FragmentHeader extends Struct {
+    @Field(order = 0, type = Type.U8)
+    public final short nextHeader;
+    @Field(order = 1, type = Type.S8)
+    public final byte reserved;
+    @Field(order = 2, type = Type.U16)
+    public final int fragmentOffset;
+    @Field(order = 3, type = Type.S32)
+    public final int identification;
+
+    public FragmentHeader(final short nextHeader, final byte reserved, final int fragmentOffset,
+            final int identification) {
+        this.nextHeader = nextHeader;
+        this.reserved = reserved;
+        this.fragmentOffset = fragmentOffset;
+        this.identification = identification;
+    }
+
+    public FragmentHeader(final short nextHeader, final int fragmentOffset,
+            final int identification) {
+        this(nextHeader, (byte) 0, fragmentOffset, identification);
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/structs/PrefixInformationOption.java b/staticlibs/device/com/android/net/module/util/structs/PrefixInformationOption.java
index 49d7654..bbbe571 100644
--- a/staticlibs/device/com/android/net/module/util/structs/PrefixInformationOption.java
+++ b/staticlibs/device/com/android/net/module/util/structs/PrefixInformationOption.java
@@ -21,11 +21,16 @@
 import android.net.IpPrefix;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
 
 import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Computed;
 import com.android.net.module.util.Struct.Field;
 import com.android.net.module.util.Struct.Type;
 
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 
@@ -71,7 +76,11 @@
     @Field(order = 7, type = Type.ByteArray, arraysize = 16)
     public final byte[] prefix;
 
-    PrefixInformationOption(final byte type, final byte length, final byte prefixLen,
+    @Computed
+    private final IpPrefix mIpPrefix;
+
+    @VisibleForTesting
+    public PrefixInformationOption(final byte type, final byte length, final byte prefixLen,
             final byte flags, final long validLifetime, final long preferredLifetime,
             final int reserved, @NonNull final byte[] prefix) {
         this.type = type;
@@ -82,6 +91,23 @@
         this.preferredLifetime = preferredLifetime;
         this.reserved = reserved;
         this.prefix = prefix;
+
+        try {
+            final Inet6Address addr = (Inet6Address) InetAddress.getByAddress(prefix);
+            mIpPrefix = new IpPrefix(addr, prefixLen);
+        } catch (UnknownHostException | ClassCastException e) {
+            // UnknownHostException should never happen unless prefix is null.
+            // ClassCastException can occur when prefix is an IPv6 mapped IPv4 address.
+            // Both scenarios should throw an exception in the context of Struct#parse().
+            throw new IllegalArgumentException(e);
+        }
+    }
+
+    /**
+     * Return the prefix {@link IpPrefix} included in the PIO.
+     */
+    public IpPrefix getIpPrefix() {
+        return mIpPrefix;
     }
 
     /**
diff --git a/staticlibs/framework/com/android/net/module/util/CollectionUtils.java b/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
index 39e7ce9..f3d8c4a 100644
--- a/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/CollectionUtils.java
@@ -389,4 +389,28 @@
         }
         return dest;
     }
+
+    /**
+     * Returns an index of the given SparseArray that contains the given value, or -1
+     * number if no keys map to the given value.
+     *
+     * <p>Note this is a linear search, and if multiple keys can map to the same value
+     * then the smallest index is returned.
+     *
+     * <p>This function compares values with {@code equals} while the
+     * {@link SparseArray#indexOfValue} compares values using {@code ==}.
+     */
+    public static <T> int getIndexForValue(SparseArray<T> sparseArray, T value) {
+        for(int i = 0, nsize = sparseArray.size(); i < nsize; i++) {
+            T valueAt = sparseArray.valueAt(i);
+            if (valueAt == null) {
+                if (value == null) {
+                    return i;
+                };
+            } else if (valueAt.equals(value)) {
+                return i;
+            }
+        }
+        return -1;
+    }
 }
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java b/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
index 54ce01e..7066131 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkCapabilitiesUtils.java
@@ -39,12 +39,13 @@
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_ETHERNET;
+import static android.net.NetworkCapabilities.TRANSPORT_SATELLITE;
 import static android.net.NetworkCapabilities.TRANSPORT_USB;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI_AWARE;
 
-import static com.android.net.module.util.BitUtils.packBitList;
+import static com.android.net.module.util.BitUtils.packBits;
 import static com.android.net.module.util.BitUtils.unpackBits;
 
 import android.annotation.NonNull;
@@ -75,8 +76,8 @@
         TRANSPORT_BLUETOOTH,
         TRANSPORT_WIFI,
         TRANSPORT_ETHERNET,
-        TRANSPORT_USB
-
+        TRANSPORT_USB,
+        TRANSPORT_SATELLITE
         // Notably, TRANSPORT_TEST is not in this list as any network that has TRANSPORT_TEST and
         // one of the above transports should be counted as that transport, to keep tests as
         // realistic as possible.
@@ -88,41 +89,41 @@
       * and {@code FORCE_RESTRICTED_CAPABILITIES}.
      */
     @VisibleForTesting
-    public static final long RESTRICTED_CAPABILITIES = packBitList(
-            NET_CAPABILITY_BIP,
-            NET_CAPABILITY_CBS,
-            NET_CAPABILITY_DUN,
-            NET_CAPABILITY_EIMS,
-            NET_CAPABILITY_ENTERPRISE,
-            NET_CAPABILITY_FOTA,
-            NET_CAPABILITY_IA,
-            NET_CAPABILITY_IMS,
-            NET_CAPABILITY_MCX,
-            NET_CAPABILITY_RCS,
-            NET_CAPABILITY_VEHICLE_INTERNAL,
-            NET_CAPABILITY_VSIM,
-            NET_CAPABILITY_XCAP,
-            NET_CAPABILITY_MMTEL);
+    public static final long RESTRICTED_CAPABILITIES =
+            (1L << NET_CAPABILITY_BIP) |
+            (1L << NET_CAPABILITY_CBS) |
+            (1L << NET_CAPABILITY_DUN) |
+            (1L << NET_CAPABILITY_EIMS) |
+            (1L << NET_CAPABILITY_ENTERPRISE) |
+            (1L << NET_CAPABILITY_FOTA) |
+            (1L << NET_CAPABILITY_IA) |
+            (1L << NET_CAPABILITY_IMS) |
+            (1L << NET_CAPABILITY_MCX) |
+            (1L << NET_CAPABILITY_RCS) |
+            (1L << NET_CAPABILITY_VEHICLE_INTERNAL) |
+            (1L << NET_CAPABILITY_VSIM) |
+            (1L << NET_CAPABILITY_XCAP) |
+            (1L << NET_CAPABILITY_MMTEL);
 
     /**
      * Capabilities that force network to be restricted.
      * See {@code NetworkCapabilities#maybeMarkCapabilitiesRestricted}.
      */
-    private static final long FORCE_RESTRICTED_CAPABILITIES = packBitList(
-            NET_CAPABILITY_ENTERPRISE,
-            NET_CAPABILITY_OEM_PAID,
-            NET_CAPABILITY_OEM_PRIVATE);
+    private static final long FORCE_RESTRICTED_CAPABILITIES =
+            (1L << NET_CAPABILITY_ENTERPRISE) |
+            (1L << NET_CAPABILITY_OEM_PAID) |
+            (1L << NET_CAPABILITY_OEM_PRIVATE);
 
     /**
      * Capabilities that suggest that a network is unrestricted.
      * See {@code NetworkCapabilities#maybeMarkCapabilitiesRestricted}.
      */
     @VisibleForTesting
-    public static final long UNRESTRICTED_CAPABILITIES = packBitList(
-            NET_CAPABILITY_INTERNET,
-            NET_CAPABILITY_MMS,
-            NET_CAPABILITY_SUPL,
-            NET_CAPABILITY_WIFI_P2P);
+    public static final long UNRESTRICTED_CAPABILITIES =
+            (1L << NET_CAPABILITY_INTERNET) |
+            (1L << NET_CAPABILITY_MMS) |
+            (1L << NET_CAPABILITY_SUPL) |
+            (1L << NET_CAPABILITY_WIFI_P2P);
 
     /**
      * Get a transport that can be used to classify a network when displaying its info to users.
@@ -158,28 +159,33 @@
      *
      * @return {@code true} if the network should be restricted.
      */
-    // TODO: Use packBits(nc.getCapabilities()) to check more easily using bit masks.
     public static boolean inferRestrictedCapability(NetworkCapabilities nc) {
+        return inferRestrictedCapability(packBits(nc.getCapabilities()));
+    }
+
+    /**
+     * Infers that all the capabilities it provides are typically provided by restricted networks
+     * or not.
+     *
+     * @param capabilities see {@link NetworkCapabilities#getCapabilities()}
+     *
+     * @return {@code true} if the network should be restricted.
+     */
+    public static boolean inferRestrictedCapability(long capabilities) {
         // Check if we have any capability that forces the network to be restricted.
-        for (int capability : unpackBits(FORCE_RESTRICTED_CAPABILITIES)) {
-            if (nc.hasCapability(capability)) {
-                return true;
-            }
+        if ((capabilities & FORCE_RESTRICTED_CAPABILITIES) != 0) {
+            return true;
         }
 
         // Verify there aren't any unrestricted capabilities.  If there are we say
         // the whole thing is unrestricted unless it is forced to be restricted.
-        for (int capability : unpackBits(UNRESTRICTED_CAPABILITIES)) {
-            if (nc.hasCapability(capability)) {
-                return false;
-            }
+        if ((capabilities & UNRESTRICTED_CAPABILITIES) != 0) {
+            return false;
         }
 
         // Must have at least some restricted capabilities.
-        for (int capability : unpackBits(RESTRICTED_CAPABILITIES)) {
-            if (nc.hasCapability(capability)) {
-                return true;
-            }
+        if ((capabilities & RESTRICTED_CAPABILITIES) != 0) {
+            return true;
         }
         return false;
     }
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 7c4abe0..a8c50d8 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -129,7 +129,9 @@
     public static final int IPV6_PROTOCOL_OFFSET = 6;
     public static final int IPV6_SRC_ADDR_OFFSET = 8;
     public static final int IPV6_DST_ADDR_OFFSET = 24;
+    public static final int IPV6_FRAGMENT_ID_OFFSET = 4;
     public static final int IPV6_MIN_MTU = 1280;
+    public static final int IPV6_FRAGMENT_ID_LEN = 4;
     public static final int IPV6_FRAGMENT_HEADER_LEN = 8;
     public static final int RFC7421_PREFIX_LENGTH = 64;
     // getSockOpt() for v6 MTU
@@ -141,6 +143,8 @@
     public static final Inet6Address IPV6_ADDR_ALL_HOSTS_MULTICAST =
             (Inet6Address) InetAddresses.parseNumericAddress("ff02::3");
 
+    public static final int IPPROTO_FRAGMENT = 44;
+
     /**
      * ICMP constants.
      *
@@ -179,6 +183,8 @@
     public static final int ICMPV6_RA_HEADER_LEN = 16;
     public static final int ICMPV6_NS_HEADER_LEN = 24;
     public static final int ICMPV6_NA_HEADER_LEN = 24;
+    public static final int ICMPV6_ND_OPTION_TLLA_LEN = 8;
+    public static final int ICMPV6_ND_OPTION_SLLA_LEN = 8;
 
     public static final int NEIGHBOR_ADVERTISEMENT_FLAG_ROUTER    = 1 << 31;
     public static final int NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED = 1 << 30;
diff --git a/staticlibs/lint-baseline.xml b/staticlibs/lint-baseline.xml
deleted file mode 100644
index 2ee3a43..0000000
--- a/staticlibs/lint-baseline.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<issues format="6" by="lint 8.4.0-alpha04" type="baseline" client="" dependencies="true" name="" variant="all" version="8.4.0-alpha04">
-
-    <issue
-        id="NewApi"
-        message="Call requires API level 31 (current min is 30): `makeNetlinkSocketAddress`"
-        errorLine1="            Os.bind(fd, makeNetlinkSocketAddress(0, mBindGroups));"
-        errorLine2="                        ~~~~~~~~~~~~~~~~~~~~~~~~">
-        <location
-            file="packages/modules/Connectivity/staticlibs/device/com/android/net/module/util/ip/NetlinkMonitor.java"
-            line="111"
-            column="25"/>
-    </issue>
-
-</issues>
diff --git a/staticlibs/native/bpf_headers/include/bpf/BpfRingbuf.h b/staticlibs/native/bpf_headers/include/bpf/BpfRingbuf.h
index d716358..cd51004 100644
--- a/staticlibs/native/bpf_headers/include/bpf/BpfRingbuf.h
+++ b/staticlibs/native/bpf_headers/include/bpf/BpfRingbuf.h
@@ -151,7 +151,7 @@
 
 
 inline base::Result<void> BpfRingbufBase::Init(const char* path) {
-  mRingFd.reset(mapRetrieveRW(path));
+  mRingFd.reset(mapRetrieveExclusiveRW(path));
   if (!mRingFd.ok()) {
     return android::base::ErrnoError()
            << "failed to retrieve ringbuffer at " << path;
diff --git a/staticlibs/native/bpf_headers/include/bpf/KernelUtils.h b/staticlibs/native/bpf_headers/include/bpf/KernelUtils.h
index 59257b8..417a5c4 100644
--- a/staticlibs/native/bpf_headers/include/bpf/KernelUtils.h
+++ b/staticlibs/native/bpf_headers/include/bpf/KernelUtils.h
@@ -42,10 +42,26 @@
     return kver;
 }
 
-static inline __unused bool isAtLeastKernelVersion(unsigned major, unsigned minor, unsigned sub) {
+static inline bool isAtLeastKernelVersion(unsigned major, unsigned minor, unsigned sub) {
     return kernelVersion() >= KVER(major, minor, sub);
 }
 
+static inline bool isKernelVersion(unsigned major, unsigned minor) {
+    return isAtLeastKernelVersion(major, minor, 0) && !isAtLeastKernelVersion(major, minor + 1, 0);
+}
+
+static inline bool __unused isLtsKernel() {
+    return isKernelVersion(4,  4) ||  // minimum for Android R
+           isKernelVersion(4,  9) ||  // minimum for Android S & T
+           isKernelVersion(4, 14) ||  // minimum for Android U
+           isKernelVersion(4, 19) ||  // minimum for Android V
+           isKernelVersion(5,  4) ||  // first supported in Android R
+           isKernelVersion(5, 10) ||  // first supported in Android S
+           isKernelVersion(5, 15) ||  // first supported in Android T
+           isKernelVersion(6,  1) ||  // first supported in Android U
+           isKernelVersion(6,  6);    // first supported in Android V
+}
+
 // Figure out the bitness of userspace.
 // Trivial and known at compile time.
 static constexpr bool isUserspace32bit() {
diff --git a/staticlibs/native/bpf_headers/include/bpf/bpf_helpers.h b/staticlibs/native/bpf_headers/include/bpf/bpf_helpers.h
index baff09b..4ddec8b 100644
--- a/staticlibs/native/bpf_headers/include/bpf/bpf_helpers.h
+++ b/staticlibs/native/bpf_headers/include/bpf/bpf_helpers.h
@@ -37,7 +37,30 @@
 #define BPFLOADER_IGNORED_ON_VERSION 33u
 
 // Android U / 14 (api level 34) - various new program types added
-#define BPFLOADER_U_VERSION 37u
+#define BPFLOADER_U_VERSION 38u
+
+// Android U QPR2 / 14 (api level 34) - platform only
+// (note: the platform bpfloader in V isn't really versioned at all,
+//  as there is no need as it can only load objects compiled at the
+//  same time as itself and the rest of the platform)
+#define BPFLOADER_U_QPR2_VERSION 41u
+#define BPFLOADER_PLATFORM_VERSION BPFLOADER_U_QPR2_VERSION
+
+// Android Mainline - this bpfloader should eventually go back to T (or even S)
+// Note: this value (and the following +1u's) are hardcoded in NetBpfLoad.cpp
+#define BPFLOADER_MAINLINE_VERSION 42u
+
+// Android Mainline BpfLoader when running on Android T
+#define BPFLOADER_MAINLINE_T_VERSION (BPFLOADER_MAINLINE_VERSION + 1u)
+
+// Android Mainline BpfLoader when running on Android U
+#define BPFLOADER_MAINLINE_U_VERSION (BPFLOADER_MAINLINE_T_VERSION + 1u)
+
+// Android Mainline BpfLoader when running on Android U QPR3
+#define BPFLOADER_MAINLINE_U_QPR3_VERSION (BPFLOADER_MAINLINE_U_VERSION + 1u)
+
+// Android Mainline BpfLoader when running on Android V
+#define BPFLOADER_MAINLINE_V_VERSION (BPFLOADER_MAINLINE_U_QPR3_VERSION + 1u)
 
 /* For mainline module use, you can #define BPFLOADER_{MIN/MAX}_VER
  * before #include "bpf_helpers.h" to change which bpfloaders will
@@ -48,7 +71,7 @@
  * In which case it's just best to use the default.
  */
 #ifndef BPFLOADER_MIN_VER
-#define BPFLOADER_MIN_VER COMPILE_FOR_BPFLOADER_VERSION
+#define BPFLOADER_MIN_VER BPFLOADER_PLATFORM_VERSION
 #endif
 
 #ifndef BPFLOADER_MAX_VER
@@ -111,10 +134,13 @@
 #define KVER_NONE KVER_(0)
 #define KVER_4_14 KVER(4, 14, 0)
 #define KVER_4_19 KVER(4, 19, 0)
-#define KVER_5_4 KVER(5, 4, 0)
-#define KVER_5_8 KVER(5, 8, 0)
-#define KVER_5_9 KVER(5, 9, 0)
+#define KVER_5_4  KVER(5, 4, 0)
+#define KVER_5_8  KVER(5, 8, 0)
+#define KVER_5_9  KVER(5, 9, 0)
+#define KVER_5_10 KVER(5, 10, 0)
 #define KVER_5_15 KVER(5, 15, 0)
+#define KVER_6_1  KVER(6, 1, 0)
+#define KVER_6_6  KVER(6, 6, 0)
 #define KVER_INF KVER_(0xFFFFFFFFu)
 
 #define KVER_IS_AT_LEAST(kver, a, b, c) ((kver).kver >= KVER(a, b, c).kver)
diff --git a/staticlibs/native/bpf_headers/include/bpf/bpf_map_def.h b/staticlibs/native/bpf_headers/include/bpf/bpf_map_def.h
index ef03c4d..00ef91a 100644
--- a/staticlibs/native/bpf_headers/include/bpf/bpf_map_def.h
+++ b/staticlibs/native/bpf_headers/include/bpf/bpf_map_def.h
@@ -48,9 +48,6 @@
 #define DEFAULT_SIZEOF_BPF_MAP_DEF 32       // v0.0 struct: enum (uint sized) + 7 uint
 #define DEFAULT_SIZEOF_BPF_PROG_DEF 20      // v0.0 struct: 4 uint + bool + 3 byte alignment pad
 
-// By default, unless otherwise specified, allow the use of features only supported by v0.37.
-#define COMPILE_FOR_BPFLOADER_VERSION 37u
-
 /*
  * The bpf_{map,prog}_def structures are compiled for different architectures.
  * Once by the BPF compiler for the BPF architecture, and once by a C++
diff --git a/staticlibs/native/bpf_syscall_wrappers/include/BpfSyscallWrappers.h b/staticlibs/native/bpf_syscall_wrappers/include/BpfSyscallWrappers.h
index 9995cb9..73cef89 100644
--- a/staticlibs/native/bpf_syscall_wrappers/include/BpfSyscallWrappers.h
+++ b/staticlibs/native/bpf_syscall_wrappers/include/BpfSyscallWrappers.h
@@ -16,8 +16,11 @@
 
 #pragma once
 
+#include <stdlib.h>
+#include <unistd.h>
 #include <linux/bpf.h>
 #include <linux/unistd.h>
+#include <sys/file.h>
 
 #ifdef BPF_FD_JUST_USE_INT
   #define BPF_FD_TYPE int
@@ -128,26 +131,74 @@
                             });
 }
 
-inline int mapRetrieve(const char* pathname, uint32_t flag) {
-    return bpfFdGet(pathname, flag);
+int bpfGetFdMapId(const BPF_FD_TYPE map_fd);
+
+inline int bpfLock(int fd, short type) {
+    if (fd < 0) return fd;  // pass any errors straight through
+#ifdef BPF_MAP_LOCKLESS_FOR_TEST
+    return fd;
+#endif
+#ifdef BPF_FD_JUST_USE_INT
+    int mapId = bpfGetFdMapId(fd);
+    int saved_errno = errno;
+#else
+    base::unique_fd ufd(fd);
+    int mapId = bpfGetFdMapId(ufd);
+    int saved_errno = errno;
+    (void)ufd.release();
+#endif
+    // 4.14+ required to fetch map id, but we don't want to call isAtLeastKernelVersion
+    if (mapId == -1 && saved_errno == EINVAL) return fd;
+    if (mapId <= 0) abort();  // should not be possible
+
+    // on __LP64__ (aka. 64-bit userspace) 'struct flock64' is the same as 'struct flock'
+    struct flock64 fl = {
+        .l_type = type,        // short: F_{RD,WR,UN}LCK
+        .l_whence = SEEK_SET,  // short: SEEK_{SET,CUR,END}
+        .l_start = mapId,      // off_t: start offset
+        .l_len = 1,            // off_t: number of bytes
+    };
+
+    // see: bionic/libc/bionic/fcntl.cpp: iff !__LP64__ this uses fcntl64
+    int ret = fcntl(fd, F_OFD_SETLK, &fl);
+    if (!ret) return fd;  // success
+    close(fd);
+    return ret;  // most likely -1 with errno == EAGAIN, due to already held lock
+}
+
+inline int mapRetrieveLocklessRW(const char* pathname) {
+    return bpfFdGet(pathname, 0);
+}
+
+inline int mapRetrieveExclusiveRW(const char* pathname) {
+    return bpfLock(mapRetrieveLocklessRW(pathname), F_WRLCK);
 }
 
 inline int mapRetrieveRW(const char* pathname) {
-    return mapRetrieve(pathname, 0);
+    return bpfLock(mapRetrieveLocklessRW(pathname), F_RDLCK);
 }
 
 inline int mapRetrieveRO(const char* pathname) {
-    return mapRetrieve(pathname, BPF_F_RDONLY);
+    return bpfFdGet(pathname, BPF_F_RDONLY);
 }
 
+// WARNING: it's impossible to grab a shared (ie. read) lock on a write-only fd,
+// so we instead choose to grab an exclusive (ie. write) lock.
 inline int mapRetrieveWO(const char* pathname) {
-    return mapRetrieve(pathname, BPF_F_WRONLY);
+    return bpfLock(bpfFdGet(pathname, BPF_F_WRONLY), F_WRLCK);
 }
 
 inline int retrieveProgram(const char* pathname) {
     return bpfFdGet(pathname, BPF_F_RDONLY);
 }
 
+inline bool usableProgram(const char* pathname) {
+    int fd = retrieveProgram(pathname);
+    bool ok = (fd >= 0);
+    if (ok) close(fd);
+    return ok;
+}
+
 inline int attachProgram(bpf_attach_type type, const BPF_FD_TYPE prog_fd,
                          const BPF_FD_TYPE cg_fd, uint32_t flags = 0) {
     return bpf(BPF_PROG_ATTACH, {
diff --git a/staticlibs/native/bpfmapjni/Android.bp b/staticlibs/native/bpfmapjni/Android.bp
index 7e6b4ec..969ebd4 100644
--- a/staticlibs/native/bpfmapjni/Android.bp
+++ b/staticlibs/native/bpfmapjni/Android.bp
@@ -39,7 +39,7 @@
         "-Werror",
         "-Wno-unused-parameter",
     ],
-    sdk_version: "30",
+    sdk_version: "current",
     min_sdk_version: "30",
     apex_available: [
         "com.android.tethering",
diff --git a/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp b/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
index b92f107..1923ceb 100644
--- a/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
+++ b/staticlibs/native/bpfmapjni/com_android_net_module_util_BpfMap.cpp
@@ -35,7 +35,24 @@
         jstring path, jint mode, jint keySize, jint valueSize) {
     ScopedUtfChars pathname(env, path);
 
-    jint fd = bpf::bpfFdGet(pathname.c_str(), static_cast<unsigned>(mode));
+    jint fd = -1;
+    switch (mode) {
+      case 0:
+        fd = bpf::mapRetrieveRW(pathname.c_str());
+        break;
+      case BPF_F_RDONLY:
+        fd = bpf::mapRetrieveRO(pathname.c_str());
+        break;
+      case BPF_F_WRONLY:
+        fd = bpf::mapRetrieveWO(pathname.c_str());
+        break;
+      case BPF_F_RDONLY|BPF_F_WRONLY:
+        fd = bpf::mapRetrieveExclusiveRW(pathname.c_str());
+        break;
+      default:
+        errno = EINVAL;
+        break;
+    }
 
     if (fd < 0) {
         jniThrowErrnoException(env, "nativeBpfFdGet", errno);
diff --git a/staticlibs/native/bpfmapjni/com_android_net_module_util_TcUtils.cpp b/staticlibs/native/bpfmapjni/com_android_net_module_util_TcUtils.cpp
index ab83da6..2a587b6 100644
--- a/staticlibs/native/bpfmapjni/com_android_net_module_util_TcUtils.cpp
+++ b/staticlibs/native/bpfmapjni/com_android_net_module_util_TcUtils.cpp
@@ -19,6 +19,9 @@
 #include <nativehelper/scoped_utf_chars.h>
 #include <tcutils/tcutils.h>
 
+#define BPF_FD_JUST_USE_INT
+#include "BpfSyscallWrappers.h"
+
 namespace android {
 
 static void throwIOException(JNIEnv *env, const char *msg, int error) {
@@ -96,6 +99,14 @@
   }
 }
 
+static jboolean com_android_net_module_util_TcUtils_isBpfProgramUsable(JNIEnv *env,
+                                                                       jclass clazz,
+                                                                       jstring bpfProgPath) {
+    ScopedUtfChars pathname(env, bpfProgPath);
+    return bpf::usableProgram(pathname.c_str());
+}
+
+
 /*
  * JNI registration.
  */
@@ -111,6 +122,8 @@
      (void *)com_android_net_module_util_TcUtils_tcFilterDelDev},
     {"tcQdiscAddDevClsact", "(I)V",
      (void *)com_android_net_module_util_TcUtils_tcQdiscAddDevClsact},
+    {"isBpfProgramUsable", "(Ljava/lang/String;)Z",
+     (void *)com_android_net_module_util_TcUtils_isBpfProgramUsable},
 };
 
 int register_com_android_net_module_util_TcUtils(JNIEnv *env,
diff --git a/staticlibs/native/tcutils/Android.bp b/staticlibs/native/tcutils/Android.bp
index 926590d..e4742ce 100644
--- a/staticlibs/native/tcutils/Android.bp
+++ b/staticlibs/native/tcutils/Android.bp
@@ -21,7 +21,10 @@
     name: "libtcutils",
     srcs: ["tcutils.cpp"],
     export_include_dirs: ["include"],
-    header_libs: ["bpf_headers"],
+    header_libs: [
+        "bpf_headers",
+        "libbase_headers",
+    ],
     shared_libs: [
         "liblog",
     ],
@@ -31,7 +34,7 @@
         "-Werror",
         "-Wno-unused-parameter",
     ],
-    sdk_version: "30",
+    sdk_version: "current",
     min_sdk_version: "30",
     apex_available: [
         "com.android.tethering",
diff --git a/staticlibs/native/tcutils/scopeguard.h b/staticlibs/native/tcutils/scopeguard.h
deleted file mode 100644
index 76bbb93..0000000
--- a/staticlibs/native/tcutils/scopeguard.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2022 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-// -----------------------------------------------------------------------------
-// TODO: figure out a way to use libbase_ndk. This is currently not working
-// because of missing apex availability. For now, we can use a copy of
-// ScopeGuard which is very lean compared to unique_fd. This code has been
-// copied verbatim from:
-// https://cs.android.com/android/platform/superproject/+/master:system/libbase/include/android-base/scopeguard.h
-
-#pragma once
-
-#include <utility> // for std::move, std::forward
-
-namespace android {
-namespace base {
-
-// ScopeGuard ensures that the specified functor is executed no matter how the
-// current scope exits.
-template <typename F> class ScopeGuard {
-public:
-  ScopeGuard(F &&f) : f_(std::forward<F>(f)), active_(true) {}
-
-  ScopeGuard(ScopeGuard &&that) noexcept
-      : f_(std::move(that.f_)), active_(that.active_) {
-    that.active_ = false;
-  }
-
-  template <typename Functor>
-  ScopeGuard(ScopeGuard<Functor> &&that)
-      : f_(std::move(that.f_)), active_(that.active_) {
-    that.active_ = false;
-  }
-
-  ~ScopeGuard() {
-    if (active_)
-      f_();
-  }
-
-  ScopeGuard() = delete;
-  ScopeGuard(const ScopeGuard &) = delete;
-  void operator=(const ScopeGuard &) = delete;
-  void operator=(ScopeGuard &&that) = delete;
-
-  void Disable() { active_ = false; }
-
-  bool active() const { return active_; }
-
-private:
-  template <typename Functor> friend class ScopeGuard;
-
-  F f_;
-  bool active_;
-};
-
-template <typename F> ScopeGuard<F> make_scope_guard(F &&f) {
-  return ScopeGuard<F>(std::forward<F>(f));
-}
-
-} // namespace base
-} // namespace android
diff --git a/staticlibs/native/tcutils/tcutils.cpp b/staticlibs/native/tcutils/tcutils.cpp
index c82390f..21e781c 100644
--- a/staticlibs/native/tcutils/tcutils.cpp
+++ b/staticlibs/native/tcutils/tcutils.cpp
@@ -20,8 +20,10 @@
 
 #include "logging.h"
 #include "bpf/KernelUtils.h"
-#include "scopeguard.h"
 
+#include <BpfSyscallWrappers.h>
+#include <android-base/scopeguard.h>
+#include <android-base/unique_fd.h>
 #include <arpa/inet.h>
 #include <cerrno>
 #include <cstring>
@@ -39,10 +41,6 @@
 #include <unistd.h>
 #include <utility>
 
-#define BPF_FD_JUST_USE_INT
-#include <BpfSyscallWrappers.h>
-#undef BPF_FD_JUST_USE_INT
-
 // The maximum length of TCA_BPF_NAME. Sync from net/sched/cls_bpf.c.
 #define CLS_BPF_NAME_LEN 256
 
@@ -52,6 +50,9 @@
 namespace android {
 namespace {
 
+using base::make_scope_guard;
+using base::unique_fd;
+
 /**
  * IngressPoliceFilterBuilder builds a nlmsg request equivalent to the following
  * tc command:
@@ -130,7 +131,7 @@
   // class members
   const unsigned mBurstInBytes;
   const char *mBpfProgPath;
-  int mBpfFd;
+  unique_fd mBpfFd;
   Request mRequest;
 
   static double getTickInUsec() {
@@ -139,7 +140,7 @@
       ALOGE("fopen(\"/proc/net/psched\"): %s", strerror(errno));
       return 0.0;
     }
-    auto scopeGuard = base::make_scope_guard([fp] { fclose(fp); });
+    auto scopeGuard = make_scope_guard([fp] { fclose(fp); });
 
     uint32_t t2us;
     uint32_t us2t;
@@ -166,7 +167,6 @@
                       unsigned burstInBytes, const char* bpfProgPath)
       : mBurstInBytes(burstInBytes),
         mBpfProgPath(bpfProgPath),
-        mBpfFd(-1),
         mRequest{
             .n = {
                 .nlmsg_len = sizeof(mRequest),
@@ -298,13 +298,6 @@
   }
   // clang-format on
 
-  ~IngressPoliceFilterBuilder() {
-    // TODO: use unique_fd
-    if (mBpfFd != -1) {
-      close(mBpfFd);
-    }
-  }
-
   constexpr unsigned getRequestSize() const { return sizeof(Request); }
 
 private:
@@ -332,14 +325,14 @@
   }
 
   int initBpfFd() {
-    mBpfFd = bpf::retrieveProgram(mBpfProgPath);
-    if (mBpfFd == -1) {
+    mBpfFd.reset(bpf::retrieveProgram(mBpfProgPath));
+    if (!mBpfFd.ok()) {
       int error = errno;
       ALOGE("retrieveProgram failed: %d", error);
       return -error;
     }
 
-    mRequest.opt.acts.act2.opt.fd.u32 = static_cast<uint32_t>(mBpfFd);
+    mRequest.opt.acts.act2.opt.fd.u32 = static_cast<uint32_t>(mBpfFd.get());
     snprintf(mRequest.opt.acts.act2.opt.name.str,
              sizeof(mRequest.opt.acts.act2.opt.name.str), "%s:[*fsobj]",
              basename(mBpfProgPath));
@@ -370,14 +363,13 @@
 
 int sendAndProcessNetlinkResponse(const void *req, int len) {
   // TODO: use unique_fd instead of ScopeGuard
-  int fd = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
-  if (fd == -1) {
+  unique_fd fd(socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE));
+  if (!fd.ok()) {
     int error = errno;
     ALOGE("socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE): %d",
              error);
     return -error;
   }
-  auto scopeGuard = base::make_scope_guard([fd] { close(fd); });
 
   static constexpr int on = 1;
   if (setsockopt(fd, SOL_NETLINK, NETLINK_CAP_ACK, &on, sizeof(on))) {
@@ -460,10 +452,9 @@
 }
 
 int hardwareAddressType(const char *interface) {
-  int fd = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
-  if (fd < 0)
+  unique_fd fd(socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0));
+  if (!fd.ok())
     return -errno;
-  auto scopeGuard = base::make_scope_guard([fd] { close(fd); });
 
   struct ifreq ifr = {};
   // We use strncpy() instead of strlcpy() since kernel has to be able
@@ -576,12 +567,11 @@
 // /sys/fs/bpf/... direct-action
 int tcAddBpfFilter(int ifIndex, bool ingress, uint16_t prio, uint16_t proto,
                    const char *bpfProgPath) {
-  const int bpfFd = bpf::retrieveProgram(bpfProgPath);
-  if (bpfFd == -1) {
+  unique_fd bpfFd(bpf::retrieveProgram(bpfProgPath));
+  if (!bpfFd.ok()) {
     ALOGE("retrieveProgram failed: %d", errno);
     return -errno;
   }
-  auto scopeGuard = base::make_scope_guard([bpfFd] { close(bpfFd); });
 
   struct {
     nlmsghdr n;
diff --git a/staticlibs/netd/Android.bp b/staticlibs/netd/Android.bp
index 59ef20d..44abba2 100644
--- a/staticlibs/netd/Android.bp
+++ b/staticlibs/netd/Android.bp
@@ -22,7 +22,7 @@
     sdk_version: "system_current",
     min_sdk_version: "30",
     static_libs: [
-        "netd_aidl_interface-V14-java",
+        "netd_aidl_interface-V15-java",
     ],
     apex_available: [
         "//apex_available:platform", // used from services.net
@@ -45,7 +45,7 @@
 cc_library_static {
     name: "netd_aidl_interface-lateststable-ndk",
     whole_static_libs: [
-        "netd_aidl_interface-V14-ndk",
+        "netd_aidl_interface-V15-ndk",
     ],
     apex_available: [
         "com.android.resolv",
@@ -56,12 +56,12 @@
 
 cc_defaults {
     name: "netd_aidl_interface_lateststable_cpp_static",
-    static_libs: ["netd_aidl_interface-V14-cpp"],
+    static_libs: ["netd_aidl_interface-V15-cpp"],
 }
 
 cc_defaults {
     name: "netd_aidl_interface_lateststable_cpp_shared",
-    shared_libs: ["netd_aidl_interface-V14-cpp"],
+    shared_libs: ["netd_aidl_interface-V15-cpp"],
 }
 
 aidl_interface {
@@ -167,6 +167,10 @@
             version: "14",
             imports: [],
         },
+        {
+            version: "15",
+            imports: [],
+        },
 
     ],
     frozen: true,
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/.hash b/staticlibs/netd/aidl_api/netd_aidl_interface/15/.hash
new file mode 100644
index 0000000..afdadcc
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/.hash
@@ -0,0 +1 @@
+2be6ff6fb01645cdddb3bb60f6de5727e5733267
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetd.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetd.aidl
new file mode 100644
index 0000000..80b3b62
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetd.aidl
@@ -0,0 +1,260 @@
+/**
+ * Copyright (c) 2016, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+interface INetd {
+  boolean isAlive();
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  boolean firewallReplaceUidChain(in @utf8InCpp String chainName, boolean isAllowlist, in int[] uids);
+  boolean bandwidthEnableDataSaver(boolean enable);
+  /**
+   * @deprecated use networkCreate() instead.
+   */
+  void networkCreatePhysical(int netId, int permission);
+  /**
+   * @deprecated use networkCreate() instead.
+   */
+  void networkCreateVpn(int netId, boolean secure);
+  void networkDestroy(int netId);
+  void networkAddInterface(int netId, in @utf8InCpp String iface);
+  void networkRemoveInterface(int netId, in @utf8InCpp String iface);
+  void networkAddUidRanges(int netId, in android.net.UidRangeParcel[] uidRanges);
+  void networkRemoveUidRanges(int netId, in android.net.UidRangeParcel[] uidRanges);
+  void networkRejectNonSecureVpn(boolean add, in android.net.UidRangeParcel[] uidRanges);
+  void socketDestroy(in android.net.UidRangeParcel[] uidRanges, in int[] exemptUids);
+  boolean tetherApplyDnsInterfaces();
+  android.net.TetherStatsParcel[] tetherGetStats();
+  void interfaceAddAddress(in @utf8InCpp String ifName, in @utf8InCpp String addrString, int prefixLength);
+  void interfaceDelAddress(in @utf8InCpp String ifName, in @utf8InCpp String addrString, int prefixLength);
+  @utf8InCpp String getProcSysNet(int ipversion, int which, in @utf8InCpp String ifname, in @utf8InCpp String parameter);
+  void setProcSysNet(int ipversion, int which, in @utf8InCpp String ifname, in @utf8InCpp String parameter, in @utf8InCpp String value);
+  void ipSecSetEncapSocketOwner(in ParcelFileDescriptor socket, int newUid);
+  int ipSecAllocateSpi(int transformId, in @utf8InCpp String sourceAddress, in @utf8InCpp String destinationAddress, int spi);
+  void ipSecAddSecurityAssociation(int transformId, int mode, in @utf8InCpp String sourceAddress, in @utf8InCpp String destinationAddress, int underlyingNetId, int spi, int markValue, int markMask, in @utf8InCpp String authAlgo, in byte[] authKey, in int authTruncBits, in @utf8InCpp String cryptAlgo, in byte[] cryptKey, in int cryptTruncBits, in @utf8InCpp String aeadAlgo, in byte[] aeadKey, in int aeadIcvBits, int encapType, int encapLocalPort, int encapRemotePort, int interfaceId);
+  void ipSecDeleteSecurityAssociation(int transformId, in @utf8InCpp String sourceAddress, in @utf8InCpp String destinationAddress, int spi, int markValue, int markMask, int interfaceId);
+  void ipSecApplyTransportModeTransform(in ParcelFileDescriptor socket, int transformId, int direction, in @utf8InCpp String sourceAddress, in @utf8InCpp String destinationAddress, int spi);
+  void ipSecRemoveTransportModeTransform(in ParcelFileDescriptor socket);
+  void ipSecAddSecurityPolicy(int transformId, int selAddrFamily, int direction, in @utf8InCpp String tmplSrcAddress, in @utf8InCpp String tmplDstAddress, int spi, int markValue, int markMask, int interfaceId);
+  void ipSecUpdateSecurityPolicy(int transformId, int selAddrFamily, int direction, in @utf8InCpp String tmplSrcAddress, in @utf8InCpp String tmplDstAddress, int spi, int markValue, int markMask, int interfaceId);
+  void ipSecDeleteSecurityPolicy(int transformId, int selAddrFamily, int direction, int markValue, int markMask, int interfaceId);
+  void ipSecAddTunnelInterface(in @utf8InCpp String deviceName, in @utf8InCpp String localAddress, in @utf8InCpp String remoteAddress, int iKey, int oKey, int interfaceId);
+  void ipSecUpdateTunnelInterface(in @utf8InCpp String deviceName, in @utf8InCpp String localAddress, in @utf8InCpp String remoteAddress, int iKey, int oKey, int interfaceId);
+  void ipSecRemoveTunnelInterface(in @utf8InCpp String deviceName);
+  void wakeupAddInterface(in @utf8InCpp String ifName, in @utf8InCpp String prefix, int mark, int mask);
+  void wakeupDelInterface(in @utf8InCpp String ifName, in @utf8InCpp String prefix, int mark, int mask);
+  void setIPv6AddrGenMode(in @utf8InCpp String ifName, int mode);
+  void idletimerAddInterface(in @utf8InCpp String ifName, int timeout, in @utf8InCpp String classLabel);
+  void idletimerRemoveInterface(in @utf8InCpp String ifName, int timeout, in @utf8InCpp String classLabel);
+  void strictUidCleartextPenalty(int uid, int policyPenalty);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The clatd control plane moved to the mainline module starting in T. See ClatCoordinator.
+   */
+  @utf8InCpp String clatdStart(in @utf8InCpp String ifName, in @utf8InCpp String nat64Prefix);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The clatd control plane moved to the mainline module starting in T. See ClatCoordinator.
+   */
+  void clatdStop(in @utf8InCpp String ifName);
+  boolean ipfwdEnabled();
+  @utf8InCpp String[] ipfwdGetRequesterList();
+  void ipfwdEnableForwarding(in @utf8InCpp String requester);
+  void ipfwdDisableForwarding(in @utf8InCpp String requester);
+  void ipfwdAddInterfaceForward(in @utf8InCpp String fromIface, in @utf8InCpp String toIface);
+  void ipfwdRemoveInterfaceForward(in @utf8InCpp String fromIface, in @utf8InCpp String toIface);
+  void bandwidthSetInterfaceQuota(in @utf8InCpp String ifName, long bytes);
+  void bandwidthRemoveInterfaceQuota(in @utf8InCpp String ifName);
+  void bandwidthSetInterfaceAlert(in @utf8InCpp String ifName, long bytes);
+  void bandwidthRemoveInterfaceAlert(in @utf8InCpp String ifName);
+  void bandwidthSetGlobalAlert(long bytes);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void bandwidthAddNaughtyApp(int uid);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void bandwidthRemoveNaughtyApp(int uid);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void bandwidthAddNiceApp(int uid);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void bandwidthRemoveNiceApp(int uid);
+  void tetherStart(in @utf8InCpp String[] dhcpRanges);
+  void tetherStop();
+  boolean tetherIsEnabled();
+  void tetherInterfaceAdd(in @utf8InCpp String ifName);
+  void tetherInterfaceRemove(in @utf8InCpp String ifName);
+  @utf8InCpp String[] tetherInterfaceList();
+  void tetherDnsSet(int netId, in @utf8InCpp String[] dnsAddrs);
+  @utf8InCpp String[] tetherDnsList();
+  void networkAddRoute(int netId, in @utf8InCpp String ifName, in @utf8InCpp String destination, in @utf8InCpp String nextHop);
+  void networkRemoveRoute(int netId, in @utf8InCpp String ifName, in @utf8InCpp String destination, in @utf8InCpp String nextHop);
+  void networkAddLegacyRoute(int netId, in @utf8InCpp String ifName, in @utf8InCpp String destination, in @utf8InCpp String nextHop, int uid);
+  void networkRemoveLegacyRoute(int netId, in @utf8InCpp String ifName, in @utf8InCpp String destination, in @utf8InCpp String nextHop, int uid);
+  int networkGetDefault();
+  void networkSetDefault(int netId);
+  void networkClearDefault();
+  void networkSetPermissionForNetwork(int netId, int permission);
+  void networkSetPermissionForUser(int permission, in int[] uids);
+  void networkClearPermissionForUser(in int[] uids);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void trafficSetNetPermForUids(int permission, in int[] uids);
+  void networkSetProtectAllow(int uid);
+  void networkSetProtectDeny(int uid);
+  boolean networkCanProtect(int uid);
+  void firewallSetFirewallType(int firewalltype);
+  void firewallSetInterfaceRule(in @utf8InCpp String ifName, int firewallRule);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void firewallSetUidRule(int childChain, int uid, int firewallRule);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void firewallEnableChildChain(int childChain, boolean enable);
+  @utf8InCpp String[] interfaceGetList();
+  android.net.InterfaceConfigurationParcel interfaceGetCfg(in @utf8InCpp String ifName);
+  void interfaceSetCfg(in android.net.InterfaceConfigurationParcel cfg);
+  void interfaceSetIPv6PrivacyExtensions(in @utf8InCpp String ifName, boolean enable);
+  void interfaceClearAddrs(in @utf8InCpp String ifName);
+  void interfaceSetEnableIPv6(in @utf8InCpp String ifName, boolean enable);
+  void interfaceSetMtu(in @utf8InCpp String ifName, int mtu);
+  void tetherAddForward(in @utf8InCpp String intIface, in @utf8InCpp String extIface);
+  void tetherRemoveForward(in @utf8InCpp String intIface, in @utf8InCpp String extIface);
+  void setTcpRWmemorySize(in @utf8InCpp String rmemValues, in @utf8InCpp String wmemValues);
+  void registerUnsolicitedEventListener(android.net.INetdUnsolicitedEventListener listener);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void firewallAddUidInterfaceRules(in @utf8InCpp String ifName, in int[] uids);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void firewallRemoveUidInterfaceRules(in int[] uids);
+  /**
+   * @deprecated unimplemented on T+.
+   */
+  void trafficSwapActiveStatsMap();
+  IBinder getOemNetd();
+  void tetherStartWithConfiguration(in android.net.TetherConfigParcel config);
+  android.net.MarkMaskParcel getFwmarkForNetwork(int netId);
+  void networkAddRouteParcel(int netId, in android.net.RouteInfoParcel routeInfo);
+  void networkUpdateRouteParcel(int netId, in android.net.RouteInfoParcel routeInfo);
+  void networkRemoveRouteParcel(int netId, in android.net.RouteInfoParcel routeInfo);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The mainline module accesses the BPF map directly starting in S. See BpfCoordinator.
+   */
+  void tetherOffloadRuleAdd(in android.net.TetherOffloadRuleParcel rule);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The mainline module accesses the BPF map directly starting in S. See BpfCoordinator.
+   */
+  void tetherOffloadRuleRemove(in android.net.TetherOffloadRuleParcel rule);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The mainline module accesses the BPF map directly starting in S. See BpfCoordinator.
+   */
+  android.net.TetherStatsParcel[] tetherOffloadGetStats();
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The mainline module accesses the BPF map directly starting in S. See BpfCoordinator.
+   */
+  void tetherOffloadSetInterfaceQuota(int ifIndex, long quotaBytes);
+  /**
+   * @deprecated This method has no effect and throws UnsupportedOperationException. The mainline module accesses the BPF map directly starting in S. See BpfCoordinator.
+   */
+  android.net.TetherStatsParcel tetherOffloadGetAndClearStats(int ifIndex);
+  void networkCreate(in android.net.NativeNetworkConfig config);
+  void networkAddUidRangesParcel(in android.net.netd.aidl.NativeUidRangeConfig uidRangesConfig);
+  void networkRemoveUidRangesParcel(in android.net.netd.aidl.NativeUidRangeConfig uidRangesConfig);
+  void ipSecMigrate(in android.net.IpSecMigrateInfoParcel migrateInfo);
+  void setNetworkAllowlist(in android.net.netd.aidl.NativeUidRangeConfig[] allowedNetworks);
+  void networkAllowBypassVpnOnNetwork(boolean allow, int uid, int netId);
+  const int IPV4 = 4;
+  const int IPV6 = 6;
+  const int CONF = 1;
+  const int NEIGH = 2;
+  const String IPSEC_INTERFACE_PREFIX = "ipsec";
+  const int IPV6_ADDR_GEN_MODE_EUI64 = 0;
+  const int IPV6_ADDR_GEN_MODE_NONE = 1;
+  const int IPV6_ADDR_GEN_MODE_STABLE_PRIVACY = 2;
+  const int IPV6_ADDR_GEN_MODE_RANDOM = 3;
+  const int IPV6_ADDR_GEN_MODE_DEFAULT = 0;
+  const int PENALTY_POLICY_ACCEPT = 1;
+  const int PENALTY_POLICY_LOG = 2;
+  const int PENALTY_POLICY_REJECT = 3;
+  const int CLAT_MARK = 0xdeadc1a7;
+  const int LOCAL_NET_ID = 99;
+  const int DUMMY_NET_ID = 51;
+  const int UNREACHABLE_NET_ID = 52;
+  const String NEXTHOP_NONE = "";
+  const String NEXTHOP_UNREACHABLE = "unreachable";
+  const String NEXTHOP_THROW = "throw";
+  const int PERMISSION_NONE = 0;
+  const int PERMISSION_NETWORK = 1;
+  const int PERMISSION_SYSTEM = 2;
+  const int NO_PERMISSIONS = 0;
+  const int PERMISSION_INTERNET = 4;
+  const int PERMISSION_UPDATE_DEVICE_STATS = 8;
+  const int PERMISSION_UNINSTALLED = (-1) /* -1 */;
+  /**
+   * @deprecated use FIREWALL_ALLOWLIST.
+   */
+  const int FIREWALL_WHITELIST = 0;
+  const int FIREWALL_ALLOWLIST = 0;
+  /**
+   * @deprecated use FIREWALL_DENYLIST.
+   */
+  const int FIREWALL_BLACKLIST = 1;
+  const int FIREWALL_DENYLIST = 1;
+  const int FIREWALL_RULE_ALLOW = 1;
+  const int FIREWALL_RULE_DENY = 2;
+  const int FIREWALL_CHAIN_NONE = 0;
+  const int FIREWALL_CHAIN_DOZABLE = 1;
+  const int FIREWALL_CHAIN_STANDBY = 2;
+  const int FIREWALL_CHAIN_POWERSAVE = 3;
+  const int FIREWALL_CHAIN_RESTRICTED = 4;
+  const String IF_STATE_UP = "up";
+  const String IF_STATE_DOWN = "down";
+  const String IF_FLAG_BROADCAST = "broadcast";
+  const String IF_FLAG_LOOPBACK = "loopback";
+  const String IF_FLAG_POINTOPOINT = "point-to-point";
+  const String IF_FLAG_RUNNING = "running";
+  const String IF_FLAG_MULTICAST = "multicast";
+  const int IPSEC_DIRECTION_IN = 0;
+  const int IPSEC_DIRECTION_OUT = 1;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetdUnsolicitedEventListener.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetdUnsolicitedEventListener.aidl
new file mode 100644
index 0000000..31775df
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/INetdUnsolicitedEventListener.aidl
@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+interface INetdUnsolicitedEventListener {
+  oneway void onInterfaceClassActivityChanged(boolean isActive, int timerLabel, long timestampNs, int uid);
+  oneway void onQuotaLimitReached(@utf8InCpp String alertName, @utf8InCpp String ifName);
+  oneway void onInterfaceDnsServerInfo(@utf8InCpp String ifName, long lifetimeS, in @utf8InCpp String[] servers);
+  oneway void onInterfaceAddressUpdated(@utf8InCpp String addr, @utf8InCpp String ifName, int flags, int scope);
+  oneway void onInterfaceAddressRemoved(@utf8InCpp String addr, @utf8InCpp String ifName, int flags, int scope);
+  oneway void onInterfaceAdded(@utf8InCpp String ifName);
+  oneway void onInterfaceRemoved(@utf8InCpp String ifName);
+  oneway void onInterfaceChanged(@utf8InCpp String ifName, boolean up);
+  oneway void onInterfaceLinkStateChanged(@utf8InCpp String ifName, boolean up);
+  oneway void onRouteChanged(boolean updated, @utf8InCpp String route, @utf8InCpp String gateway, @utf8InCpp String ifName);
+  oneway void onStrictCleartextDetected(int uid, @utf8InCpp String hex);
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/InterfaceConfigurationParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/InterfaceConfigurationParcel.aidl
new file mode 100644
index 0000000..1869d8d
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/InterfaceConfigurationParcel.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+parcelable InterfaceConfigurationParcel {
+  @utf8InCpp String ifName;
+  @utf8InCpp String hwAddr;
+  @utf8InCpp String ipv4Addr;
+  int prefixLength;
+  @utf8InCpp String[] flags;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/IpSecMigrateInfoParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/IpSecMigrateInfoParcel.aidl
new file mode 100644
index 0000000..975a261
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/IpSecMigrateInfoParcel.aidl
@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2022, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+@JavaOnlyImmutable
+parcelable IpSecMigrateInfoParcel {
+  int requestId;
+  int selAddrFamily;
+  int direction;
+  @utf8InCpp String oldSourceAddress;
+  @utf8InCpp String oldDestinationAddress;
+  @utf8InCpp String newSourceAddress;
+  @utf8InCpp String newDestinationAddress;
+  int interfaceId;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/MarkMaskParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/MarkMaskParcel.aidl
new file mode 100644
index 0000000..8ea20d1
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/MarkMaskParcel.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+parcelable MarkMaskParcel {
+  int mark;
+  int mask;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkConfig.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkConfig.aidl
new file mode 100644
index 0000000..77d814b
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkConfig.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+@JavaDerive(equals=true, toString=true) @JavaOnlyImmutable
+parcelable NativeNetworkConfig {
+  int netId;
+  android.net.NativeNetworkType networkType = android.net.NativeNetworkType.PHYSICAL;
+  int permission;
+  boolean secure;
+  android.net.NativeVpnType vpnType = android.net.NativeVpnType.PLATFORM;
+  boolean excludeLocalRoutes = false;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkType.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkType.aidl
new file mode 100644
index 0000000..e77a143
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeNetworkType.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+@Backing(type="int")
+enum NativeNetworkType {
+  PHYSICAL = 0,
+  VIRTUAL = 1,
+  PHYSICAL_LOCAL = 2,
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeVpnType.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeVpnType.aidl
new file mode 100644
index 0000000..8a8be83
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/NativeVpnType.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+@Backing(type="int")
+enum NativeVpnType {
+  SERVICE = 1,
+  PLATFORM = 2,
+  LEGACY = 3,
+  OEM = 4,
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/RouteInfoParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/RouteInfoParcel.aidl
new file mode 100644
index 0000000..5ef95e6
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/RouteInfoParcel.aidl
@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+parcelable RouteInfoParcel {
+  @utf8InCpp String destination;
+  @utf8InCpp String ifName;
+  @utf8InCpp String nextHop;
+  int mtu;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherConfigParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherConfigParcel.aidl
new file mode 100644
index 0000000..7b39c22
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherConfigParcel.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+parcelable TetherConfigParcel {
+  boolean usingLegacyDnsProxy;
+  @utf8InCpp String[] dhcpRanges;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherOffloadRuleParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherOffloadRuleParcel.aidl
new file mode 100644
index 0000000..983e986
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherOffloadRuleParcel.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+parcelable TetherOffloadRuleParcel {
+  int inputInterfaceIndex;
+  int outputInterfaceIndex;
+  byte[] destination;
+  int prefixLength;
+  byte[] srcL2Address;
+  byte[] dstL2Address;
+  int pmtu = 1500;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherStatsParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherStatsParcel.aidl
new file mode 100644
index 0000000..5f1b722
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/TetherStatsParcel.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+parcelable TetherStatsParcel {
+  @utf8InCpp String iface;
+  long rxBytes;
+  long rxPackets;
+  long txBytes;
+  long txPackets;
+  int ifIndex = 0;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/UidRangeParcel.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/UidRangeParcel.aidl
new file mode 100644
index 0000000..72e987a
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/UidRangeParcel.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net;
+/* @hide */
+@JavaDerive(equals=true, toString=true) @JavaOnlyImmutable
+parcelable UidRangeParcel {
+  int start;
+  int stop;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/netd/aidl/NativeUidRangeConfig.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/netd/aidl/NativeUidRangeConfig.aidl
new file mode 100644
index 0000000..9bb679f
--- /dev/null
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/15/android/net/netd/aidl/NativeUidRangeConfig.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.net.netd.aidl;
+/* @hide */
+@JavaDerive(equals=true, toString=true) @JavaOnlyImmutable
+parcelable NativeUidRangeConfig {
+  int netId;
+  android.net.UidRangeParcel[] uidRanges;
+  int subPriority;
+}
diff --git a/staticlibs/netd/aidl_api/netd_aidl_interface/current/android/net/INetd.aidl b/staticlibs/netd/aidl_api/netd_aidl_interface/current/android/net/INetd.aidl
index 8ccefb2..80b3b62 100644
--- a/staticlibs/netd/aidl_api/netd_aidl_interface/current/android/net/INetd.aidl
+++ b/staticlibs/netd/aidl_api/netd_aidl_interface/current/android/net/INetd.aidl
@@ -203,6 +203,7 @@
   void networkRemoveUidRangesParcel(in android.net.netd.aidl.NativeUidRangeConfig uidRangesConfig);
   void ipSecMigrate(in android.net.IpSecMigrateInfoParcel migrateInfo);
   void setNetworkAllowlist(in android.net.netd.aidl.NativeUidRangeConfig[] allowedNetworks);
+  void networkAllowBypassVpnOnNetwork(boolean allow, int uid, int netId);
   const int IPV4 = 4;
   const int IPV6 = 6;
   const int CONF = 1;
diff --git a/staticlibs/netd/binder/android/net/INetd.aidl b/staticlibs/netd/binder/android/net/INetd.aidl
index ee27e84..e4c63b9 100644
--- a/staticlibs/netd/binder/android/net/INetd.aidl
+++ b/staticlibs/netd/binder/android/net/INetd.aidl
@@ -1446,4 +1446,27 @@
     *                               - subPriority: unused
     */
     void setNetworkAllowlist(in NativeUidRangeConfig[] allowedNetworks);
+
+    /**
+     * Allow the UID to explicitly select the given network even if it is subject to a VPN.
+     *
+     * Throws ServiceSpecificException with error code EEXISTS when trying to add a bypass rule that
+     * already exists, and ENOENT when trying to remove a bypass rule that does not exist.
+     *
+     * netId specific bypass rules can be combined and are allowed to overlap with global VPN
+     * exclusions (by calling networkSetProtectAllow / networkSetProtectDeny, or by setting netId to
+     * 0). Adding or removing global VPN bypass rules does not affect the netId specific rules and
+     * vice versa.
+     *
+     * Note that if netId is set to 0 (NETID_UNSET) this API is equivalent to
+     * networkSetProtectAllow} / #networkSetProtectDeny.
+     *
+     * @param allow whether to allow or disallow the operation.
+     * @param uid the UID
+     * @param netId the netId that the UID is allowed to select.
+     *
+     * @throws ServiceSpecificException in case of failure, with an error code indicating the
+     *         cause of the failure.
+     */
+    void networkAllowBypassVpnOnNetwork(boolean allow, int uid, int netId);
 }
diff --git a/staticlibs/netd/libnetdutils/InternetAddresses.cpp b/staticlibs/netd/libnetdutils/InternetAddresses.cpp
index 322f1b1..6d98608 100644
--- a/staticlibs/netd/libnetdutils/InternetAddresses.cpp
+++ b/staticlibs/netd/libnetdutils/InternetAddresses.cpp
@@ -16,6 +16,7 @@
 
 #include "netdutils/InternetAddresses.h"
 
+#include <stdlib.h>
 #include <string>
 
 #include <android-base/stringprintf.h>
diff --git a/staticlibs/tests/unit/Android.bp b/staticlibs/tests/unit/Android.bp
index 4c226cc..cf67a82 100644
--- a/staticlibs/tests/unit/Android.bp
+++ b/staticlibs/tests/unit/Android.bp
@@ -25,6 +25,7 @@
         "net-utils-device-common-async",
         "net-utils-device-common-bpf",
         "net-utils-device-common-ip",
+        "net-utils-device-common-struct-base",
         "net-utils-device-common-wear",
     ],
     libs: [
@@ -38,6 +39,7 @@
         "//packages/modules/NetworkStack/tests/integration",
     ],
     lint: {
+        strict_updatability_linting: true,
         test: true,
     },
 }
@@ -55,4 +57,7 @@
     ],
     jarjar_rules: "jarjar-rules.txt",
     test_suites: ["device-tests"],
+    lint: {
+        strict_updatability_linting: true,
+    },
 }
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt b/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
index e23f999..4ed3afd 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/CollectionUtilsTest.kt
@@ -16,6 +16,7 @@
 
 package com.android.net.module.util
 
+import android.util.SparseArray
 import androidx.test.filters.SmallTest
 import androidx.test.runner.AndroidJUnit4
 import com.android.testutils.assertThrows
@@ -179,4 +180,20 @@
             CollectionUtils.assoc(listOf(1, 2), list15)
         }
     }
+
+    @Test
+    fun testGetIndexForValue() {
+        val sparseArray = SparseArray<String>();
+        sparseArray.put(5, "hello");
+        sparseArray.put(10, "abcd");
+        sparseArray.put(20, null);
+
+        val value1 = "abcd";
+        val value1Copy = String(value1.toCharArray())
+        val value2 = null;
+
+        assertEquals(1, CollectionUtils.getIndexForValue(sparseArray, value1));
+        assertEquals(1, CollectionUtils.getIndexForValue(sparseArray, value1Copy));
+        assertEquals(2, CollectionUtils.getIndexForValue(sparseArray, value2));
+    }
 }
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/DeviceConfigUtilsTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/DeviceConfigUtilsTest.java
index f32337d..9fb61d9 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/DeviceConfigUtilsTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/DeviceConfigUtilsTest.java
@@ -17,6 +17,7 @@
 package com.android.net.module.util;
 
 import static android.content.pm.PackageManager.MATCH_SYSTEM_ONLY;
+import static android.provider.DeviceConfig.NAMESPACE_CAPTIVEPORTALLOGIN;
 import static android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY;
 import static android.provider.DeviceConfig.NAMESPACE_TETHERING;
 
@@ -233,8 +234,12 @@
                 TEST_EXPERIMENT_FLAG));
         doReturn(TEST_FLAG_VALUE_STRING).when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn(TEST_FLAG_VALUE_STRING).when(() -> DeviceConfig.getProperty(
+                NAMESPACE_CAPTIVEPORTALLOGIN, TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertTrue(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
     }
     @Test
     public void testIsFeatureEnabledFeatureDefaultDisabled() throws Exception {
@@ -242,8 +247,12 @@
                 TEST_EXPERIMENT_FLAG));
         doReturn(null).when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn(null).when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertFalse(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         // If the flag is unset, package info is not queried
         verify(mContext, never()).getPackageManager();
@@ -257,8 +266,12 @@
                 TEST_EXPERIMENT_FLAG));
         doReturn("1").when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn("1").when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertTrue(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         // If the feature is force enabled, package info is not queried
         verify(mContext, never()).getPackageManager();
@@ -272,8 +285,12 @@
                 TEST_EXPERIMENT_FLAG));
         doReturn("-1").when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn("-1").when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertFalse(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         // If the feature is force disabled, package info is not queried
         verify(mContext, never()).getPackageManager();
@@ -290,24 +307,36 @@
                 TEST_EXPERIMENT_FLAG));
         doReturn("1").when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn("1").when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertTrue(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertTrue(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         // Feature should be disabled by flag value "999999999".
         doReturn("999999999").when(() -> DeviceConfig.getProperty(NAMESPACE_CONNECTIVITY,
                 TEST_EXPERIMENT_FLAG));
         doReturn("999999999").when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn("999999999").when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertFalse(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         // If the flag is not set feature is disabled
         doReturn(null).when(() -> DeviceConfig.getProperty(NAMESPACE_CONNECTIVITY,
                 TEST_EXPERIMENT_FLAG));
         doReturn(null).when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
+        doReturn(null).when(() -> DeviceConfig.getProperty(NAMESPACE_CAPTIVEPORTALLOGIN,
+                TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertFalse(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
     }
 
     @Test
@@ -320,9 +349,13 @@
                 NAMESPACE_CONNECTIVITY, TEST_EXPERIMENT_FLAG));
         doReturn("0").when(() -> DeviceConfig.getProperty(
                 NAMESPACE_TETHERING, TEST_EXPERIMENT_FLAG));
+        doReturn("0").when(() -> DeviceConfig.getProperty(
+                NAMESPACE_CAPTIVEPORTALLOGIN, TEST_EXPERIMENT_FLAG));
 
         assertFalse(DeviceConfigUtils.isNetworkStackFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
         assertFalse(DeviceConfigUtils.isTetheringFeatureEnabled(mContext, TEST_EXPERIMENT_FLAG));
+        assertFalse(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
 
         doReturn(TEST_FLAG_VALUE_STRING).when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
@@ -343,6 +376,21 @@
     }
 
     @Test
+    public void testIsCaptivePortalLoginFeatureEnabledCaching() throws Exception {
+        doReturn(TEST_FLAG_VALUE_STRING).when(() -> DeviceConfig.getProperty(
+                NAMESPACE_CAPTIVEPORTALLOGIN, TEST_EXPERIMENT_FLAG));
+        assertTrue(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
+        assertTrue(DeviceConfigUtils.isCaptivePortalLoginFeatureEnabled(mContext,
+                TEST_EXPERIMENT_FLAG));
+
+        // Package info is only queried once
+        verify(mContext, times(1)).getPackageManager();
+        verify(mContext, times(1)).getPackageName();
+        verify(mPm, times(1)).getPackageInfo(anyString(), anyInt());
+    }
+
+    @Test
     public void testIsTetheringFeatureEnabledCaching() throws Exception {
         doReturn(TEST_FLAG_VALUE_STRING).when(() -> DeviceConfig.getProperty(NAMESPACE_TETHERING,
                 TEST_EXPERIMENT_FLAG));
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/PacketBuilderTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/PacketBuilderTest.java
index e40cd6b..886336c 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/PacketBuilderTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/PacketBuilderTest.java
@@ -21,9 +21,13 @@
 import static android.system.OsConstants.IPPROTO_TCP;
 import static android.system.OsConstants.IPPROTO_UDP;
 
+import static com.android.net.module.util.NetworkStackConstants.ETHER_HEADER_LEN;
 import static com.android.net.module.util.NetworkStackConstants.ETHER_TYPE_IPV4;
 import static com.android.net.module.util.NetworkStackConstants.ETHER_TYPE_IPV6;
 import static com.android.net.module.util.NetworkStackConstants.IPV4_HEADER_MIN_LEN;
+import static com.android.net.module.util.NetworkStackConstants.IPV6_FRAGMENT_ID_LEN;
+import static com.android.net.module.util.NetworkStackConstants.IPV6_FRAGMENT_ID_OFFSET;
+import static com.android.net.module.util.NetworkStackConstants.IPV6_HEADER_LEN;
 import static com.android.net.module.util.NetworkStackConstants.TCPHDR_ACK;
 import static com.android.net.module.util.NetworkStackConstants.TCP_HEADER_MIN_LEN;
 import static com.android.net.module.util.NetworkStackConstants.UDP_HEADER_LEN;
@@ -54,6 +58,8 @@
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.List;
 
 @RunWith(AndroidJUnit4.class)
 @SmallTest
@@ -489,10 +495,103 @@
                 (byte) 0xde, (byte) 0xad, (byte) 0xbe, (byte) 0xef
             };
 
+    private static final byte[] TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_NO_FRAG =
+            new byte[] {
+                // packet = Ether(src="11:22:33:44:55:66", dst="aa:bb:cc:dd:ee:ff", type='IPv6')/
+                //          IPv6(src="2001:db8::1", dst="2001:db8::2", tc=0x80, fl=0x515ca,
+                //          hlim=0x40)/UDP(sport=9876, dport=433)/
+                //          Raw([i%256 for i in range(0, 500)]);
+                // Ether header
+                (byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd,
+                (byte) 0xee, (byte) 0xff, (byte) 0x11, (byte) 0x22,
+                (byte) 0x33, (byte) 0x44, (byte) 0x55, (byte) 0x66,
+                (byte) 0x86, (byte) 0xdd,
+                // IPv6 header
+                (byte) 0x68, (byte) 0x05, (byte) 0x15, (byte) 0xca,
+                (byte) 0x01, (byte) 0xfc, (byte) 0x11, (byte) 0x40,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02,
+                // UDP header
+                (byte) 0x26, (byte) 0x94, (byte) 0x01, (byte) 0xb1,
+                (byte) 0x01, (byte) 0xfc, (byte) 0xd3, (byte) 0x9e,
+                // Data
+                // 500 bytes of repeated 0x00~0xff
+            };
+
+    private static final byte[] TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG1 =
+            new byte[] {
+                // packet = Ether(src="11:22:33:44:55:66", dst="aa:bb:cc:dd:ee:ff", type='IPv6')/
+                //          IPv6(src="2001:db8::1", dst="2001:db8::2", tc=0x80, fl=0x515ca,
+                //          hlim=0x40)/UDP(sport=9876, dport=433)/
+                //          Raw([i%256 for i in range(0, 500)]);
+                // packets=fragment6(packet, 400);
+                // Ether header
+                (byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd,
+                (byte) 0xee, (byte) 0xff, (byte) 0x11, (byte) 0x22,
+                (byte) 0x33, (byte) 0x44, (byte) 0x55, (byte) 0x66,
+                (byte) 0x86, (byte) 0xdd,
+                // IPv6 header
+                (byte) 0x68, (byte) 0x05, (byte) 0x15, (byte) 0xca,
+                (byte) 0x01, (byte) 0x58, (byte) 0x2c, (byte) 0x40,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02,
+                // Fragement Header
+                (byte) 0x11, (byte) 0x00, (byte) 0x00, (byte) 0x01,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                // UDP header
+                (byte) 0x26, (byte) 0x94, (byte) 0x01, (byte) 0xb1,
+                (byte) 0x01, (byte) 0xfc, (byte) 0xd3, (byte) 0x9e,
+                // Data
+                // 328 bytes of repeated 0x00~0xff, start:0x00 end:0x47
+            };
+
+    private static final byte[] TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG2 =
+            new byte[] {
+                // packet = Ether(src="11:22:33:44:55:66", dst="aa:bb:cc:dd:ee:ff", type='IPv6')/
+                //          IPv6(src="2001:db8::1", dst="2001:db8::2", tc=0x80, fl=0x515ca,
+                //          hlim=0x40)/UDP(sport=9876, dport=433)/
+                //          Raw([i%256 for i in range(0, 500)]);
+                // packets=fragment6(packet, 400);
+                // Ether header
+                (byte) 0xaa, (byte) 0xbb, (byte) 0xcc, (byte) 0xdd,
+                (byte) 0xee, (byte) 0xff, (byte) 0x11, (byte) 0x22,
+                (byte) 0x33, (byte) 0x44, (byte) 0x55, (byte) 0x66,
+                (byte) 0x86, (byte) 0xdd,
+                // IPv6 header
+                (byte) 0x68, (byte) 0x05, (byte) 0x15, (byte) 0xca,
+                (byte) 0x00, (byte) 0xb4, (byte) 0x2c, (byte) 0x40,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
+                (byte) 0x20, (byte) 0x01, (byte) 0x0d, (byte) 0xb8,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x02,
+                // Fragement Header
+                (byte) 0x11, (byte) 0x00, (byte) 0x01, (byte) 0x50,
+                (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
+                // Data
+                // 172 bytes of repeated 0x00~0xff, start:0x48 end:0xf3
+            };
+
     /**
      * Build a packet which has ether header, IP header, TCP/UDP header and data.
      * The ethernet header and data are optional. Note that both source mac address and
-     * destination mac address are required for ethernet header.
+     * destination mac address are required for ethernet header. The packet will be fragmented into
+     * multiple smaller packets if the packet size exceeds L2 mtu.
      *
      * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      * |                Layer 2 header (EthernetHeader)                | (optional)
@@ -511,11 +610,12 @@
      * @param l4proto the layer 4 protocol. Only {@code IPPROTO_TCP} and {@code IPPROTO_UDP}
      *        currently supported.
      * @param payload the payload.
+     * @param l2mtu the Link MTU. It's the upper bound of each packet size. Zero means no limit.
      */
     @NonNull
-    private ByteBuffer buildPacket(@Nullable final MacAddress srcMac,
+    private List<ByteBuffer> buildPackets(@Nullable final MacAddress srcMac,
             @Nullable final MacAddress dstMac, final int l3proto, final int l4proto,
-            @Nullable final ByteBuffer payload)
+            @Nullable final ByteBuffer payload, int l2mtu)
             throws Exception {
         if (l3proto != IPPROTO_IP && l3proto != IPPROTO_IPV6) {
             fail("Unsupported layer 3 protocol " + l3proto);
@@ -562,7 +662,15 @@
             payload.clear();
         }
 
-        return packetBuilder.finalizePacket();
+        return packetBuilder.finalizePacket(l2mtu > 0 ? l2mtu : Integer.MAX_VALUE);
+    }
+
+    @NonNull
+    private ByteBuffer buildPacket(@Nullable final MacAddress srcMac,
+            @Nullable final MacAddress dstMac, final int l3proto, final int l4proto,
+            @Nullable final ByteBuffer payload)
+            throws Exception {
+        return buildPackets(srcMac, dstMac, l3proto, l4proto, payload, 0).get(0);
     }
 
     /**
@@ -874,6 +982,66 @@
         assertArrayEquals(TEST_PACKET_IPV6HDR_UDPHDR_DATA, packet.array());
     }
 
+    private void checkIpv6PacketIgnoreFragmentId(byte[] expected, byte[] actual) {
+        final int offset = ETHER_HEADER_LEN + IPV6_HEADER_LEN + IPV6_FRAGMENT_ID_OFFSET;
+        assertArrayEquals(Arrays.copyOf(expected, offset), Arrays.copyOf(actual, offset));
+        assertArrayEquals(
+                Arrays.copyOfRange(expected, offset + IPV6_FRAGMENT_ID_LEN, expected.length),
+                Arrays.copyOfRange(actual, offset + IPV6_FRAGMENT_ID_LEN, actual.length));
+    }
+
+    @Test
+    public void testBuildPacketIPv6FragmentUdpData() throws Exception {
+        // A UDP packet with 500 bytes payload will be fragmented into two UDP packets each carrying
+        // 328 and 172 bytes of payload if the Link MTU is 400. Note that only the first packet
+        // contains the original UDP header.
+        final int payloadLen = 500;
+        final int payloadLen1 = 328;
+        final int payloadLen2 = 172;
+        final int l2mtu = 400;
+        final byte[] payload = new byte[payloadLen];
+        // Initialize the payload with repeated values from 0x00 to 0xff.
+        for (int i = 0; i < payload.length; i++) {
+            payload[i] = (byte) (i & 0xff);
+        }
+
+        // Verify original UDP packet.
+        final ByteBuffer packet = buildPacket(SRC_MAC, DST_MAC, IPPROTO_IPV6, IPPROTO_UDP,
+                ByteBuffer.wrap(payload));
+        final int headerLen = TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_NO_FRAG.length;
+        assertArrayEquals(TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_NO_FRAG,
+                Arrays.copyOf(packet.array(), headerLen));
+        assertArrayEquals(payload,
+                Arrays.copyOfRange(packet.array(), headerLen, headerLen + payloadLen));
+
+        // Verify fragments of UDP packet.
+        final List<ByteBuffer> packets = buildPackets(SRC_MAC, DST_MAC, IPPROTO_IPV6, IPPROTO_UDP,
+                ByteBuffer.wrap(payload), l2mtu);
+        assertEquals(2, packets.size());
+
+        // Verify first fragment.
+        int headerLen1 = TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG1.length;
+        // (1) Compare packet content up to the UDP header, excluding the fragment ID as it's a
+        // random value.
+        checkIpv6PacketIgnoreFragmentId(TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG1,
+                Arrays.copyOf(packets.get(0).array(), headerLen1));
+        // (2) Compare UDP payload.
+        assertArrayEquals(Arrays.copyOf(payload, payloadLen1),
+                Arrays.copyOfRange(packets.get(0).array(), headerLen1, headerLen1 + payloadLen1));
+
+        // Verify second fragment (similar to the first one).
+        int headerLen2 = TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG2.length;
+        checkIpv6PacketIgnoreFragmentId(TEST_PACKET_ETHERHDR_IPV6HDR_UDPHDR_DATA_FRAG2,
+                Arrays.copyOf(packets.get(1).array(), headerLen2));
+        assertArrayEquals(Arrays.copyOfRange(payload, payloadLen1, payloadLen1 + payloadLen2),
+                Arrays.copyOfRange(packets.get(1).array(), headerLen2, headerLen2 + payloadLen2));
+        // Verify that the fragment IDs in the first and second fragments are the same.
+        final int offset = ETHER_HEADER_LEN + IPV6_HEADER_LEN + IPV6_FRAGMENT_ID_OFFSET;
+        assertArrayEquals(
+                Arrays.copyOfRange(packets.get(0).array(), offset, offset + IPV6_FRAGMENT_ID_LEN),
+                Arrays.copyOfRange(packets.get(1).array(), offset, offset + IPV6_FRAGMENT_ID_LEN));
+    }
+
     @Test
     public void testFinalizePacketWithoutIpv4Header() throws Exception {
         final ByteBuffer buffer = PacketBuilder.allocate(false /* hasEther */, IPPROTO_IP,
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/util/SyncStateMachineTest.kt b/staticlibs/tests/unit/src/com/android/net/module/util/SyncStateMachineTest.kt
similarity index 98%
rename from Tethering/tests/unit/src/com/android/networkstack/tethering/util/SyncStateMachineTest.kt
rename to staticlibs/tests/unit/src/com/android/net/module/util/SyncStateMachineTest.kt
index 3a57fdd..d534054 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/util/SyncStateMachineTest.kt
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/SyncStateMachineTest.kt
@@ -13,13 +13,13 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.networkstack.tethering.util
+package com.android.net.module.util
 
 import android.os.Message
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SmallTest
 import com.android.internal.util.State
-import com.android.networkstack.tethering.util.SyncStateMachine.StateInfo
+import com.android.net.module.util.SyncStateMachine.StateInfo
 import java.util.ArrayDeque
 import java.util.ArrayList
 import kotlin.test.assertFailsWith
@@ -45,7 +45,7 @@
 
 @RunWith(AndroidJUnit4::class)
 @SmallTest
-class SynStateMachineTest {
+class SyncStateMachineTest {
     private val mState1 = spy(object : TestState(MSG_1) {})
     private val mState2 = spy(object : TestState(MSG_2) {})
     private val mState3 = spy(object : TestState(MSG_3) {})
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NduseroptMessageTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NduseroptMessageTest.java
index 4fc5ec2..d1df3a6 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NduseroptMessageTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NduseroptMessageTest.java
@@ -252,8 +252,10 @@
     public void testToString() {
         NduseroptMessage msg = parseNduseroptMessage(toBuffer(MSG_PREF64));
         assertNotNull(msg);
-        assertEquals("Nduseroptmsg(10, 16, 1431655765, 134, 0, fe80:2:3:4:5:6:7:8%1431655765)",
-                msg.toString());
+        final String expected = "Nduseroptmsg(family:10, opts_len:16, ifindex:1431655765, "
+                + "icmp_type:134, icmp_code:0, srcaddr: fe80:2:3:4:5:6:7:8%1431655765, "
+                + "NdOptPref64(2001:db8:3:4:5:6::/96, 10064))";
+        assertEquals(expected, msg.toString());
     }
 
     // Convenience method to parse a NduseroptMessage that's not part of a netlink message.
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NetlinkConstantsTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NetlinkConstantsTest.java
index 143e4d4..e42c552 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NetlinkConstantsTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/NetlinkConstantsTest.java
@@ -46,6 +46,7 @@
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWADDR;
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWLINK;
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWNDUSEROPT;
+import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWPREFIX;
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWNEIGH;
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWROUTE;
 import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWRULE;
@@ -89,6 +90,7 @@
         assertEquals("RTM_NEWRULE", stringForNlMsgType(RTM_NEWRULE, NETLINK_ROUTE));
         assertEquals("RTM_DELRULE", stringForNlMsgType(RTM_DELRULE, NETLINK_ROUTE));
         assertEquals("RTM_GETRULE", stringForNlMsgType(RTM_GETRULE, NETLINK_ROUTE));
+        assertEquals("RTM_NEWPREFIX", stringForNlMsgType(RTM_NEWPREFIX, NETLINK_ROUTE));
         assertEquals("RTM_NEWNDUSEROPT", stringForNlMsgType(RTM_NEWNDUSEROPT, NETLINK_ROUTE));
 
         assertEquals("SOCK_DIAG_BY_FAMILY",
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNdOptPioTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNdOptPioTest.java
new file mode 100644
index 0000000..0d88829
--- /dev/null
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNdOptPioTest.java
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.netlink;
+
+import static com.android.net.module.util.NetworkStackConstants.INFINITE_LEASE;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import android.net.IpPrefix;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.net.module.util.structs.PrefixInformationOption;
+
+import libcore.util.HexEncoding;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class StructNdOptPioTest {
+    private static final IpPrefix TEST_PREFIX = new IpPrefix("2a00:79e1:abc:f605::/64");
+    private static final byte TEST_PIO_FLAGS_P_UNSET = (byte) 0xC0; // L=1,A=1
+    private static final byte TEST_PIO_FLAGS_P_SET   = (byte) 0xD0; // L=1,A=1,P=1
+    private static final String PIO_BYTES =
+            "0304"                                // type=3, length=4
+            + "40"                                // prefix length=64
+            + "C0"                                // L=1,A=1
+            + "00278D00"                          // valid=259200
+            + "00093A80"                          // preferred=604800
+            + "00000000"                          // Reserved2
+            + "2A0079E10ABCF6050000000000000000"; // prefix=2a00:79e1:abc:f605::
+
+    private static final String PIO_WITH_P_FLAG_BYTES =
+            "0304"                                // type=3, length=4
+            + "40"                                // prefix length=64
+            + "D0"                                // L=1,A=1,P=1
+            + "00278D00"                          // valid=2592000
+            + "00093A80"                          // preferred=604800
+            + "00000000"                          // Reserved2
+            + "2A0079E10ABCF6050000000000000000"; // prefix=2a00:79e1:abc:f605::
+
+    private static final String PIO_WITH_P_FLAG_INFINITY_LIFETIME_BYTES =
+            "0304"                                // type=3, length=4
+            + "40"                                // prefix length=64
+            + "D0"                                // L=1,A=1,P=1
+            + "FFFFFFFF"                          // valid=infinity
+            + "FFFFFFFF"                          // preferred=infintiy
+            + "00000000"                          // Reserved2
+            + "2A0079E10ABCF6050000000000000000"; // prefix=2a00:79e1:abc:f605::
+
+    private static void assertPioOptMatches(final StructNdOptPio opt, int length, byte flags,
+            long preferred, long valid, final IpPrefix prefix) {
+        assertEquals(StructNdOptPio.TYPE, opt.type);
+        assertEquals(length, opt.length);
+        assertEquals(flags, opt.flags);
+        assertEquals(preferred, opt.preferred);
+        assertEquals(valid, opt.valid);
+        assertEquals(prefix, opt.prefix);
+    }
+
+    private static void assertToByteBufferMatches(final StructNdOptPio opt, final String expected) {
+        String actual = HexEncoding.encodeToString(opt.toByteBuffer().array());
+        assertEquals(expected, actual);
+    }
+
+    private static void doPioParsingTest(final String optionHexString, int length, byte flags,
+            long preferred, long valid, final IpPrefix prefix) {
+        final byte[] rawBytes = HexEncoding.decode(optionHexString);
+        final StructNdOptPio opt = StructNdOptPio.parse(ByteBuffer.wrap(rawBytes));
+        assertPioOptMatches(opt, length, flags, preferred, valid, prefix);
+        assertToByteBufferMatches(opt, optionHexString);
+    }
+
+    @Test
+    public void testParsingPioWithoutPFlag() {
+        doPioParsingTest(PIO_BYTES, 4 /* length */, TEST_PIO_FLAGS_P_UNSET,
+                604800 /* preferred */, 2592000 /* valid */, TEST_PREFIX);
+    }
+
+    @Test
+    public void testParsingPioWithPFlag() {
+        doPioParsingTest(PIO_WITH_P_FLAG_BYTES, 4 /* length */, TEST_PIO_FLAGS_P_SET,
+                604800 /* preferred */, 2592000 /* valid */, TEST_PREFIX);
+    }
+
+    @Test
+    public void testParsingPioWithPFlag_infinityLifetime() {
+        doPioParsingTest(PIO_WITH_P_FLAG_INFINITY_LIFETIME_BYTES, 4 /* length */,
+                TEST_PIO_FLAGS_P_SET,
+                Integer.toUnsignedLong(INFINITE_LEASE) /* preferred */,
+                Integer.toUnsignedLong(INFINITE_LEASE) /* valid */,
+                TEST_PREFIX);
+    }
+
+    @Test
+    public void testToByteBuffer() {
+        final StructNdOptPio pio =
+                new StructNdOptPio(TEST_PIO_FLAGS_P_UNSET, 604800 /* preferred */,
+                        2592000 /* valid */, TEST_PREFIX);
+        assertToByteBufferMatches(pio, PIO_BYTES);
+    }
+
+    @Test
+    public void testToByteBuffer_withPFlag() {
+        final StructNdOptPio pio =
+                new StructNdOptPio(TEST_PIO_FLAGS_P_SET, 604800 /* preferred */,
+                        2592000 /* valid */, TEST_PREFIX);
+        assertToByteBufferMatches(pio, PIO_WITH_P_FLAG_BYTES);
+    }
+
+    @Test
+    public void testToByteBuffer_infinityLifetime() {
+        final StructNdOptPio pio =
+                new StructNdOptPio(TEST_PIO_FLAGS_P_SET,
+                        Integer.toUnsignedLong(INFINITE_LEASE) /* preferred */,
+                        Integer.toUnsignedLong(INFINITE_LEASE) /* valid */, TEST_PREFIX);
+        assertToByteBufferMatches(pio, PIO_WITH_P_FLAG_INFINITY_LIFETIME_BYTES);
+    }
+
+    private static ByteBuffer makePioOption(byte type, byte length, byte prefixLen, byte flags,
+            long valid, long preferred, final byte[] prefix) {
+        final PrefixInformationOption pio = new PrefixInformationOption(type, length, prefixLen,
+                flags, valid, preferred, 0 /* reserved */, prefix);
+        return ByteBuffer.wrap(pio.writeToBytes(ByteOrder.BIG_ENDIAN));
+    }
+
+    @Test
+    public void testParsing_invalidOptionType() {
+        final ByteBuffer buf = makePioOption((byte) 24 /* wrong type:RIO */,
+                (byte) 4 /* length */, (byte) 64 /* prefixLen */, TEST_PIO_FLAGS_P_SET,
+                2592000 /* valid */, 604800 /* preferred */, TEST_PREFIX.getRawAddress());
+        assertNull(StructNdOptPio.parse(buf));
+    }
+
+    @Test
+    public void testParsing_invalidOptionLength() {
+        final ByteBuffer buf = makePioOption((byte) 24 /* wrong type:RIO */,
+                (byte) 3 /* wrong length */, (byte) 64 /* prefixLen */,
+                TEST_PIO_FLAGS_P_SET, 2592000 /* valid */, 604800 /* preferred */,
+                TEST_PREFIX.getRawAddress());
+        assertNull(StructNdOptPio.parse(buf));
+    }
+
+    @Test
+    public void testParsing_truncatedByteBuffer() {
+        final ByteBuffer buf = makePioOption((byte) 3 /* type */, (byte) 4 /* length */,
+                (byte) 64 /* prefixLen */, TEST_PIO_FLAGS_P_SET,
+                2592000 /* valid */, 604800 /* preferred */, TEST_PREFIX.getRawAddress());
+        final int len = buf.limit();
+        for (int i = 0; i < buf.limit() - 1; i++) {
+            buf.flip();
+            buf.limit(i);
+            assertNull("Option truncated to " + i + " bytes, should have returned null",
+                    StructNdOptPio.parse(buf));
+        }
+        buf.flip();
+        buf.limit(len);
+
+        final StructNdOptPio opt = StructNdOptPio.parse(buf);
+        assertPioOptMatches(opt, (byte) 4 /* length */, TEST_PIO_FLAGS_P_SET,
+                604800 /* preferred */, 2592000 /* valid */, TEST_PREFIX);
+    }
+
+    @Test
+    public void testParsing_invalidByteBufferLength() {
+        final ByteBuffer buf = makePioOption((byte) 3 /* type */, (byte) 4 /* length */,
+                (byte) 64 /* prefixLen */, TEST_PIO_FLAGS_P_SET,
+                2592000 /* valid */, 604800 /* preferred */, TEST_PREFIX.getRawAddress());
+        buf.limit(31); // less than 4 * 8
+        assertNull(StructNdOptPio.parse(buf));
+    }
+
+    @Test
+    public void testToString() {
+        final ByteBuffer buf = makePioOption((byte) 3 /* type */, (byte) 4 /* length */,
+                (byte) 64 /* prefixLen */, TEST_PIO_FLAGS_P_SET,
+                2592000 /* valid */, 604800 /* preferred */, TEST_PREFIX.getRawAddress());
+        final StructNdOptPio opt = StructNdOptPio.parse(buf);
+        final String expected = "NdOptPio"
+                + "(flags:D0, preferred lft:604800, valid lft:2592000,"
+                + " prefix:2a00:79e1:abc:f605::/64)";
+        assertEquals(expected, opt.toString());
+    }
+}
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNlAttrTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNlAttrTest.java
index 4c3fde6..b5e3dff 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNlAttrTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/StructNlAttrTest.java
@@ -69,11 +69,11 @@
     }
 
     @Test
-    public void testGetValueAsIntger() {
+    public void testGetValueAsInteger() {
         final StructNlAttr attr1 = new StructNlAttr(IFA_FLAGS, TEST_ADDR_FLAGS);
         final Integer integer1 = attr1.getValueAsInteger();
         final int int1 = attr1.getValueAsInt(0x08 /* default value */);
-        assertEquals(integer1, new Integer(TEST_ADDR_FLAGS));
+        assertEquals(integer1, Integer.valueOf(TEST_ADDR_FLAGS));
         assertEquals(int1, TEST_ADDR_FLAGS);
 
         // Malformed attribute.
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/structs/FragmentHeaderTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/structs/FragmentHeaderTest.java
new file mode 100644
index 0000000..1a78ca5
--- /dev/null
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/structs/FragmentHeaderTest.java
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.structs;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+
+@RunWith(AndroidJUnit4.class)
+public class FragmentHeaderTest {
+    private static final byte[] HEADER_BYTES = new byte[] {
+        17, /* nextHeader  */
+        0, /* reserved */
+        15, 1, /* fragmentOffset */
+        1, 2, 3, 4 /* identification */
+    };
+
+    @Test
+    public void testConstructor() {
+        FragmentHeader fragHdr = new FragmentHeader((short) 10 /* nextHeader */,
+                (byte) 11 /* reserved */,
+                12 /* fragmentOffset */,
+                13 /* identification */);
+
+        assertEquals(10, fragHdr.nextHeader);
+        assertEquals(11, fragHdr.reserved);
+        assertEquals(12, fragHdr.fragmentOffset);
+        assertEquals(13, fragHdr.identification);
+    }
+
+    @Test
+    public void testParseFragmentHeader() {
+        final ByteBuffer buf = ByteBuffer.wrap(HEADER_BYTES);
+        buf.order(ByteOrder.BIG_ENDIAN);
+        FragmentHeader fragHdr = FragmentHeader.parse(FragmentHeader.class, buf);
+
+        assertEquals(17, fragHdr.nextHeader);
+        assertEquals(0, fragHdr.reserved);
+        assertEquals(0xF01, fragHdr.fragmentOffset);
+        assertEquals(0x1020304, fragHdr.identification);
+    }
+
+    @Test
+    public void testWriteToBytes() {
+        FragmentHeader fragHdr = new FragmentHeader((short) 17 /* nextHeader */,
+                (byte) 0 /* reserved */,
+                0xF01 /* fragmentOffset */,
+                0x1020304 /* identification */);
+
+        byte[] bytes = fragHdr.writeToBytes(ByteOrder.BIG_ENDIAN);
+
+        assertArrayEquals("bytes = " + Arrays.toString(bytes), HEADER_BYTES, bytes);
+    }
+}
diff --git a/staticlibs/testutils/Android.bp b/staticlibs/testutils/Android.bp
index a8e5a69..3843b90 100644
--- a/staticlibs/testutils/Android.bp
+++ b/staticlibs/testutils/Android.bp
@@ -40,6 +40,7 @@
         "net-utils-device-common-async",
         "net-utils-device-common-netlink",
         "net-utils-device-common-struct",
+        "net-utils-device-common-struct-base",
         "net-utils-device-common-wear",
         "modules-utils-build_system",
     ],
@@ -98,6 +99,8 @@
         "mcts-networking",
         "mts-tethering",
         "mcts-tethering",
+        "mcts-wifi",
+        "mcts-dnsresolver",
     ],
     data: [":ConnectivityTestPreparer"],
 }
diff --git a/staticlibs/testutils/app/connectivitychecker/Android.bp b/staticlibs/testutils/app/connectivitychecker/Android.bp
index 5af8c14..394c6be 100644
--- a/staticlibs/testutils/app/connectivitychecker/Android.bp
+++ b/staticlibs/testutils/app/connectivitychecker/Android.bp
@@ -30,7 +30,6 @@
         "modules-utils-build_system",
         "net-tests-utils",
     ],
-    host_required: ["net-tests-utils-host-common"],
     lint: {
         strict_updatability_linting: true,
     },
diff --git a/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/ConnectivityCheckTest.kt b/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/ConnectivityCheckTest.kt
index df6067d..e634f0e 100644
--- a/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/ConnectivityCheckTest.kt
+++ b/staticlibs/testutils/app/connectivitychecker/src/com/android/testutils/connectivitypreparer/ConnectivityCheckTest.kt
@@ -34,17 +34,13 @@
     private val connectUtil by lazy { ConnectUtil(context) }
 
     @Test
-    fun testCheckConnectivity() {
-        checkWifiSetup()
-        checkTelephonySetup()
-    }
-
-    private fun checkWifiSetup() {
+    fun testCheckWifiSetup() {
         if (!pm.hasSystemFeature(FEATURE_WIFI)) return
         connectUtil.ensureWifiValidated()
     }
 
-    private fun checkTelephonySetup() {
+    @Test
+    fun testCheckTelephonySetup() {
         if (!pm.hasSystemFeature(FEATURE_TELEPHONY)) return
         val tm = context.getSystemService(TelephonyManager::class.java)
                 ?: fail("Could not get telephony service")
@@ -52,7 +48,7 @@
         val commonError = "Check the test bench. To run the tests anyway for quick & dirty local " +
                 "testing, you can use atest X -- " +
                 "--test-arg com.android.testutils.ConnectivityTestTargetPreparer" +
-                ":ignore-connectivity-check:true"
+                ":ignore-mobile-data-check:true"
         // Do not use assertEquals: it outputs "expected X, was Y", which looks like a test failure
         if (tm.simState == TelephonyManager.SIM_STATE_ABSENT) {
             fail("The device has no SIM card inserted. $commonError")
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/AutoReleaseNetworkCallbackRule.kt b/staticlibs/testutils/devicetests/com/android/testutils/AutoReleaseNetworkCallbackRule.kt
new file mode 100644
index 0000000..93422ad
--- /dev/null
+++ b/staticlibs/testutils/devicetests/com/android/testutils/AutoReleaseNetworkCallbackRule.kt
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.testutils
+
+import android.net.ConnectivityManager
+import android.net.ConnectivityManager.NetworkCallback
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import android.os.Handler
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.testutils.RecorderCallback.CallbackEntry
+import java.util.Collections
+import kotlin.test.fail
+import org.junit.rules.TestRule
+import org.junit.runner.Description
+import org.junit.runners.model.Statement
+
+/**
+ * A rule to file [NetworkCallback]s to request or watch networks.
+ *
+ * The callbacks filed in test methods are automatically unregistered when the method completes.
+ */
+class AutoReleaseNetworkCallbackRule : NetworkCallbackHelper(), TestRule {
+    override fun apply(base: Statement, description: Description): Statement {
+        return RequestCellNetworkStatement(base, description)
+    }
+
+    private inner class RequestCellNetworkStatement(
+        private val base: Statement,
+        private val description: Description
+    ) : Statement() {
+        override fun evaluate() {
+            tryTest {
+                base.evaluate()
+            } cleanup {
+                unregisterAll()
+            }
+        }
+    }
+}
+
+/**
+ * Helps file [NetworkCallback]s to request or watch networks, keeping track of them for cleanup.
+ */
+open class NetworkCallbackHelper {
+    private val cm by lazy {
+        InstrumentationRegistry.getInstrumentation().context
+            .getSystemService(ConnectivityManager::class.java)
+            ?: fail("ConnectivityManager not found")
+    }
+    private val cbToCleanup = Collections.synchronizedSet(mutableSetOf<NetworkCallback>())
+    private var cellRequestCb: TestableNetworkCallback? = null
+
+    /**
+     * Convenience method to request a cell network, similarly to [requestNetwork].
+     *
+     * The rule will keep tract of a single cell network request, which can be unrequested manually
+     * using [unrequestCell].
+     */
+    fun requestCell(): Network {
+        if (cellRequestCb != null) {
+            fail("Cell network was already requested")
+        }
+        val cb = requestNetwork(
+            NetworkRequest.Builder()
+                .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR)
+                .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+                .build()
+        )
+        cellRequestCb = cb
+        return cb.expect<CallbackEntry.Available>(
+            errorMsg = "Cell network not available. " +
+                    "Please ensure the device has working mobile data."
+        ).network
+    }
+
+    /**
+     * Unrequest a cell network requested through [requestCell].
+     */
+    fun unrequestCell() {
+        val cb = cellRequestCb ?: fail("Cell network was not requested")
+        unregisterNetworkCallback(cb)
+        cellRequestCb = null
+    }
+
+    private fun addCallback(
+        cb: TestableNetworkCallback,
+        registrar: (TestableNetworkCallback) -> Unit
+    ): TestableNetworkCallback {
+        registrar(cb)
+        cbToCleanup.add(cb)
+        return cb
+    }
+
+    /**
+     * File a request for a Network.
+     *
+     * This will fail tests (throw) if the cell network cannot be obtained, or if it was already
+     * requested.
+     *
+     * Tests may call [unregisterNetworkCallback] once they are done using the returned [Network],
+     * otherwise it will be automatically unrequested after the test.
+     */
+    @JvmOverloads
+    fun requestNetwork(
+        request: NetworkRequest,
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler? = null
+    ) = addCallback(cb) {
+        if (handler == null) {
+            cm.requestNetwork(request, it)
+        } else {
+            cm.requestNetwork(request, it, handler)
+        }
+    }
+
+    /**
+     * Overload of [requestNetwork] that allows specifying a timeout.
+     */
+    @JvmOverloads
+    fun requestNetwork(
+        request: NetworkRequest,
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        timeoutMs: Int,
+    ) = addCallback(cb) { cm.requestNetwork(request, it, timeoutMs) }
+
+    /**
+     * File a callback for a NetworkRequest.
+     *
+     * This will fail tests (throw) if the cell network cannot be obtained, or if it was already
+     * requested.
+     *
+     * Tests may call [unregisterNetworkCallback] once they are done using the returned [Network],
+     * otherwise it will be automatically unrequested after the test.
+     */
+    @JvmOverloads
+    fun registerNetworkCallback(
+        request: NetworkRequest,
+        cb: TestableNetworkCallback = TestableNetworkCallback()
+    ) = addCallback(cb) { cm.registerNetworkCallback(request, it) }
+
+    /**
+     * @see ConnectivityManager.registerDefaultNetworkCallback
+     */
+    @JvmOverloads
+    fun registerDefaultNetworkCallback(
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler? = null
+    ) = addCallback(cb) {
+        if (handler == null) {
+            cm.registerDefaultNetworkCallback(it)
+        } else {
+            cm.registerDefaultNetworkCallback(it, handler)
+        }
+    }
+
+    /**
+     * @see ConnectivityManager.registerSystemDefaultNetworkCallback
+     */
+    @JvmOverloads
+    fun registerSystemDefaultNetworkCallback(
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler
+    ) = addCallback(cb) { cm.registerSystemDefaultNetworkCallback(it, handler) }
+
+    /**
+     * @see ConnectivityManager.registerDefaultNetworkCallbackForUid
+     */
+    @JvmOverloads
+    fun registerDefaultNetworkCallbackForUid(
+        uid: Int,
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler
+    ) = addCallback(cb) { cm.registerDefaultNetworkCallbackForUid(uid, it, handler) }
+
+    /**
+     * @see ConnectivityManager.registerBestMatchingNetworkCallback
+     */
+    @JvmOverloads
+    fun registerBestMatchingNetworkCallback(
+        request: NetworkRequest,
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler
+    ) = addCallback(cb) { cm.registerBestMatchingNetworkCallback(request, it, handler) }
+
+    /**
+     * @see ConnectivityManager.requestBackgroundNetwork
+     */
+    @JvmOverloads
+    fun requestBackgroundNetwork(
+        request: NetworkRequest,
+        cb: TestableNetworkCallback = TestableNetworkCallback(),
+        handler: Handler
+    ) = addCallback(cb) { cm.requestBackgroundNetwork(request, it, handler) }
+
+    /**
+     * Unregister a callback filed using registration methods in this class.
+     */
+    fun unregisterNetworkCallback(cb: NetworkCallback) {
+        cm.unregisterNetworkCallback(cb)
+        cbToCleanup.remove(cb)
+    }
+
+    /**
+     * Unregister all callbacks that were filed using registration methods in this class.
+     */
+    fun unregisterAll() {
+        cbToCleanup.forEach { cm.unregisterNetworkCallback(it) }
+        cbToCleanup.clear()
+        cellRequestCb = null
+    }
+}
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/ConnectUtil.kt b/staticlibs/testutils/devicetests/com/android/testutils/ConnectUtil.kt
index 8090d5b..3857810 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/ConnectUtil.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/ConnectUtil.kt
@@ -86,6 +86,7 @@
         val callback = TestableNetworkCallback(timeoutMs = WIFI_CONNECT_TIMEOUT_MS)
         cm.registerNetworkCallback(NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_WIFI)
+                .addCapability(NET_CAPABILITY_INTERNET)
                 .build(), callback)
 
         return tryTest {
diff --git a/tests/cts/net/src/android/net/cts/MdnsTestUtils.kt b/staticlibs/testutils/devicetests/com/android/testutils/MdnsTestUtils.kt
similarity index 97%
rename from tests/cts/net/src/android/net/cts/MdnsTestUtils.kt
rename to staticlibs/testutils/devicetests/com/android/testutils/MdnsTestUtils.kt
index 5ba6c4c..8b88224 100644
--- a/tests/cts/net/src/android/net/cts/MdnsTestUtils.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/MdnsTestUtils.kt
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.net.cts
+package com.android.testutils
 
 import android.net.DnsResolver
 import android.net.Network
@@ -287,6 +287,12 @@
 ): TestDnsPacket? = pollForMdnsPacket(timeoutMs) { it.isQueryFor(recordName, *requiredTypes) }
 
 fun TapPacketReader.pollForReply(
+    recordName: String,
+    type: Int,
+    timeoutMs: Long = MDNS_REGISTRATION_TIMEOUT_MS
+): TestDnsPacket? = pollForMdnsPacket(timeoutMs) { it.isReplyFor(recordName, type) }
+
+fun TapPacketReader.pollForReply(
     serviceName: String,
     serviceType: String,
     timeoutMs: Long = MDNS_REGISTRATION_TIMEOUT_MS
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/SetFeatureFlagsRule.kt b/staticlibs/testutils/devicetests/com/android/testutils/SetFeatureFlagsRule.kt
new file mode 100644
index 0000000..d5e91c2
--- /dev/null
+++ b/staticlibs/testutils/devicetests/com/android/testutils/SetFeatureFlagsRule.kt
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.testutils.com.android.testutils
+
+import org.junit.rules.TestRule
+import org.junit.runner.Description
+import org.junit.runners.model.Statement
+
+/**
+ * A JUnit Rule that sets feature flags based on `@FeatureFlag` annotations.
+ *
+ * This rule enables dynamic control of feature flag states during testing.
+ * And restores the original values after performing tests.
+ *
+ * **Usage:**
+ * ```kotlin
+ * class MyTestClass {
+ *   @get:Rule
+ *   val setFeatureFlagsRule = SetFeatureFlagsRule(setFlagsMethod = (name, enabled) -> {
+ *     // Custom handling code.
+ *   }, (name) -> {
+ *     // Custom getter code to retrieve the original values.
+ *   })
+ *
+ *   // ... test methods with @FeatureFlag annotations
+ *   @FeatureFlag("FooBar1", true)
+ *   @FeatureFlag("FooBar2", false)
+ *   @Test
+ *   fun testFooBar() {}
+ * }
+ * ```
+ */
+class SetFeatureFlagsRule(
+    val setFlagsMethod: (name: String, enabled: Boolean?) -> Unit,
+                          val getFlagsMethod: (name: String) -> Boolean?
+) : TestRule {
+    /**
+     * This annotation marks a test method as requiring a specific feature flag to be configured.
+     *
+     * Use this on test methods to dynamically control feature flag states during testing.
+     *
+     * @param name The name of the feature flag.
+     * @param enabled The desired state (true for enabled, false for disabled) of the feature flag.
+     */
+    @Target(AnnotationTarget.FUNCTION)
+    @Retention(AnnotationRetention.RUNTIME)
+    annotation class FeatureFlag(val name: String, val enabled: Boolean = true)
+
+    /**
+     * This method is the core of the rule, executed by the JUnit framework before each test method.
+     *
+     * It retrieves the test method's metadata.
+     * If any `@FeatureFlag` annotation is found, it passes every feature flag's name
+     * and enabled state into the user-specified lambda to apply custom actions.
+     */
+    override fun apply(base: Statement, description: Description): Statement {
+        return object : Statement() {
+            override fun evaluate() {
+                val testMethod = description.testClass.getMethod(description.methodName)
+                val featureFlagAnnotations = testMethod.getAnnotationsByType(
+                    FeatureFlag::class.java
+                )
+
+                val valuesToBeRestored = mutableMapOf<String, Boolean?>()
+                for (featureFlagAnnotation in featureFlagAnnotations) {
+                    valuesToBeRestored[featureFlagAnnotation.name] =
+                            getFlagsMethod(featureFlagAnnotation.name)
+                    setFlagsMethod(featureFlagAnnotation.name, featureFlagAnnotation.enabled)
+                }
+
+                // Execute the test method, which includes methods annotated with
+                // @Before, @Test and @After.
+                base.evaluate()
+
+                valuesToBeRestored.forEach {
+                    setFlagsMethod(it.key, it.value)
+                }
+            }
+        }
+    }
+}
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkCallback.kt b/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkCallback.kt
index 05c0444..66362d4 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkCallback.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/TestableNetworkCallback.kt
@@ -91,6 +91,7 @@
             override val network: Network,
             val reason: Int
         ) : CallbackEntry()
+
         // Convenience constants for expecting a type
         companion object {
             @JvmField
@@ -216,7 +217,11 @@
     ) : this(null, timeoutMs, noCallbackTimeoutMs, waiterFunc)
 
     fun createLinkedCopy() = TestableNetworkCallback(
-            this, defaultTimeoutMs, defaultNoCallbackTimeoutMs, waiterFunc)
+        this,
+        defaultTimeoutMs,
+        defaultNoCallbackTimeoutMs,
+        waiterFunc
+    )
 
     // The last available network, or null if any network was lost since the last call to
     // onAvailable. TODO : fix this by fixing the tests that rely on this behavior
@@ -355,17 +360,29 @@
         timeoutMs: Long = defaultTimeoutMs,
         errorMsg: String? = null,
         test: (T) -> Boolean = { true }
-    ) = (poll(timeoutMs) ?: fail("Did not receive ${T::class.simpleName} after ${timeoutMs}ms"))
+    ) = (poll(timeoutMs) ?: failWithErrorReason(errorMsg,
+        "Did not receive ${T::class.simpleName} after ${timeoutMs}ms"))
             .also {
-                if (it !is T) fail("Expected callback ${T::class.simpleName}, got $it")
+                if (it !is T) {
+                    failWithErrorReason(
+                        errorMsg,
+                        "Expected callback ${T::class.simpleName}, got $it"
+                    )
+                }
                 if (ANY_NETWORK !== network && it.network != network) {
-                    fail("Expected network $network for callback : $it")
+                    failWithErrorReason(errorMsg, "Expected network $network for callback : $it")
                 }
                 if (!test(it)) {
-                    fail("${errorMsg ?: "Callback doesn't match predicate"} : $it")
+                    failWithErrorReason(errorMsg, "Callback doesn't match predicate : $it")
                 }
             } as T
 
+    // "Nothing" is the return type to declare a function never returns a value.
+    fun failWithErrorReason(errorMsg: String?, errorReason: String): Nothing {
+        val message = if (errorMsg != null) "$errorMsg : $errorReason" else errorReason
+        fail(message)
+    }
+
     inline fun <reified T : CallbackEntry> expect(
         network: HasNetwork,
         timeoutMs: Long = defaultTimeoutMs,
@@ -402,8 +419,11 @@
         from: Int = mark,
         crossinline predicate: (T) -> Boolean = { true }
     ): T = history.poll(timeoutMs, from) { it is T && predicate(it) }.also {
-        assertNotNull(it, "Callback ${T::class} not received within ${timeoutMs}ms. " +
-                "Got ${history.backtrace()}")
+        assertNotNull(
+            it,
+            "Callback ${T::class} not received within ${timeoutMs}ms. " +
+                "Got ${history.backtrace()}"
+        )
     } as T
 
     @JvmOverloads
@@ -412,8 +432,11 @@
         timeoutMs: Long = defaultTimeoutMs,
         predicate: (cb: T) -> Boolean = { true }
     ) = history.poll(timeoutMs) { type.java.isInstance(it) && predicate(it as T) }.also {
-        assertNotNull(it, "Callback ${type.java} not received within ${timeoutMs}ms. " +
-                "Got ${history.backtrace()}")
+        assertNotNull(
+            it,
+            "Callback ${type.java} not received within ${timeoutMs}ms. " +
+                "Got ${history.backtrace()}"
+        )
     } as T
 
     fun <T : CallbackEntry> eventuallyExpect(
@@ -422,8 +445,11 @@
         from: Int = mark,
         predicate: (cb: T) -> Boolean = { true }
     ) = history.poll(timeoutMs, from) { type.java.isInstance(it) && predicate(it as T) }.also {
-        assertNotNull(it, "Callback ${type.java} not received within ${timeoutMs}ms. " +
-                "Got ${history.backtrace()}")
+        assertNotNull(
+            it,
+            "Callback ${type.java} not received within ${timeoutMs}ms. " +
+                "Got ${history.backtrace()}"
+        )
     } as T
 
     // Expects onAvailable and the callbacks that follow it. These are:
@@ -534,8 +560,13 @@
         blockedReason: Int,
         tmt: Long = defaultTimeoutMs
     ) {
-        expectAvailableCallbacks(net, validated = false, suspended = false,
-                blockedReason = blockedReason, tmt = tmt)
+        expectAvailableCallbacks(
+            net,
+            validated = false,
+            suspended = false,
+            blockedReason = blockedReason,
+            tmt = tmt
+        )
         expectCaps(net, tmt) { it.hasCapability(NET_CAPABILITY_VALIDATED) }
     }
 
diff --git a/staticlibs/testutils/host/com/android/testutils/ConnectivityTestTargetPreparer.kt b/staticlibs/testutils/host/com/android/testutils/ConnectivityTestTargetPreparer.kt
index 600a623..435fdd8 100644
--- a/staticlibs/testutils/host/com/android/testutils/ConnectivityTestTargetPreparer.kt
+++ b/staticlibs/testutils/host/com/android/testutils/ConnectivityTestTargetPreparer.kt
@@ -28,9 +28,11 @@
 private const val CONNECTIVITY_CHECKER_APK = "ConnectivityTestPreparer.apk"
 private const val CONNECTIVITY_PKG_NAME = "com.android.testutils.connectivitypreparer"
 private const val CONNECTIVITY_CHECK_CLASS = "$CONNECTIVITY_PKG_NAME.ConnectivityCheckTest"
+
 // As per the <instrumentation> defined in the checker manifest
 private const val CONNECTIVITY_CHECK_RUNNER_NAME = "androidx.test.runner.AndroidJUnitRunner"
-private const val IGNORE_CONN_CHECK_OPTION = "ignore-connectivity-check"
+private const val IGNORE_WIFI_CHECK = "ignore-wifi-check"
+private const val IGNORE_MOBILE_DATA_CHECK = "ignore-mobile-data-check"
 
 // The default updater package names, which might be updating packages while the CTS
 // are running
@@ -41,14 +43,23 @@
  *
  * For quick and dirty local testing, the connectivity check can be disabled by running tests with
  * "atest -- \
- * --test-arg com.android.testutils.ConnectivityTestTargetPreparer:ignore-connectivity-check:true".
+ * --test-arg com.android.testutils.ConnectivityTestTargetPreparer:ignore-mobile-data-check:true". \
+ * --test-arg com.android.testutils.ConnectivityTestTargetPreparer:ignore-wifi-check:true".
  */
 open class ConnectivityTestTargetPreparer : BaseTargetPreparer() {
     private val installer = SuiteApkInstaller()
 
-    @Option(name = IGNORE_CONN_CHECK_OPTION,
-            description = "Disables the check for mobile data and wifi")
-    private var ignoreConnectivityCheck = false
+    @Option(
+        name = IGNORE_WIFI_CHECK,
+            description = "Disables the check for wifi"
+    )
+    private var ignoreWifiCheck = false
+    @Option(
+        name = IGNORE_MOBILE_DATA_CHECK,
+            description = "Disables the check for mobile data"
+    )
+    private var ignoreMobileDataCheck = false
+
     // The default value is never used, but false is a reasonable default
     private var originalTestChainEnabled = false
     private val originalUpdaterPkgsStatus = HashMap<String, Boolean>()
@@ -58,43 +69,62 @@
         disableGmsUpdate(testInfo)
         originalTestChainEnabled = getTestChainEnabled(testInfo)
         originalUpdaterPkgsStatus.putAll(getUpdaterPkgsStatus(testInfo))
-        setUpdaterNetworkingEnabled(testInfo, enableChain = true,
-                enablePkgs = UPDATER_PKGS.associateWith { false })
-        runPreparerApk(testInfo)
+        setUpdaterNetworkingEnabled(
+            testInfo,
+            enableChain = true,
+            enablePkgs = UPDATER_PKGS.associateWith { false }
+        )
+        runConnectivityCheckApk(testInfo)
+        refreshTime(testInfo)
     }
 
-    private fun runPreparerApk(testInfo: TestInformation) {
+    private fun runConnectivityCheckApk(testInfo: TestInformation) {
         installer.setCleanApk(true)
         installer.addTestFileName(CONNECTIVITY_CHECKER_APK)
         installer.setShouldGrantPermission(true)
         installer.setUp(testInfo)
 
+        val testMethods = mutableListOf<String>()
+        if (!ignoreWifiCheck) {
+            testMethods.add("testCheckWifiSetup")
+        }
+        if (!ignoreMobileDataCheck) {
+            testMethods.add("testCheckTelephonySetup")
+        }
+
+        testMethods.forEach {
+            runTestMethod(testInfo, it)
+        }
+    }
+
+    private fun runTestMethod(testInfo: TestInformation, method: String) {
         val runner = DefaultRemoteAndroidTestRunner(
-                CONNECTIVITY_PKG_NAME,
-                CONNECTIVITY_CHECK_RUNNER_NAME,
-                testInfo.device.iDevice)
+            CONNECTIVITY_PKG_NAME,
+            CONNECTIVITY_CHECK_RUNNER_NAME,
+            testInfo.device.iDevice
+        )
         runner.runOptions = "--no-hidden-api-checks"
+        runner.setMethodName(CONNECTIVITY_CHECK_CLASS, method)
 
         val receiver = CollectingTestListener()
         if (!testInfo.device.runInstrumentationTests(runner, receiver)) {
-            throw TargetSetupError("Device state check failed to complete",
-                    testInfo.device.deviceDescriptor)
+            throw TargetSetupError(
+                "Device state check failed to complete",
+                testInfo.device.deviceDescriptor
+            )
         }
 
         val runResult = receiver.currentRunResults
         if (runResult.isRunFailure) {
-            throw TargetSetupError("Failed to check device state before the test: " +
-                    runResult.runFailureMessage, testInfo.device.deviceDescriptor)
-        }
-
-        val ignoredTestClasses = mutableSetOf<String>()
-        if (ignoreConnectivityCheck) {
-            ignoredTestClasses.add(CONNECTIVITY_CHECK_CLASS)
+            throw TargetSetupError(
+                "Failed to check device state before the test: " +
+                    runResult.runFailureMessage,
+                testInfo.device.deviceDescriptor
+            )
         }
 
         val errorMsg = runResult.testResults.mapNotNull { (testDescription, testResult) ->
-            if (TestResult.TestStatus.FAILURE != testResult.status ||
-                    ignoredTestClasses.contains(testDescription.className)) {
+            if (TestResult.TestStatus.FAILURE != testResult.status) {
                 null
             } else {
                 "$testDescription: ${testResult.stackTrace}"
@@ -102,21 +132,27 @@
         }.joinToString("\n")
         if (errorMsg.isBlank()) return
 
-        throw TargetSetupError("Device setup checks failed. Check the test bench: \n$errorMsg",
-                testInfo.device.deviceDescriptor)
+        throw TargetSetupError(
+            "Device setup checks failed. Check the test bench: \n$errorMsg",
+            testInfo.device.deviceDescriptor
+        )
     }
 
     private fun disableGmsUpdate(testInfo: TestInformation) {
         // This will be a no-op on devices without root (su) or not using gservices, but that's OK.
-        testInfo.exec("su 0 am broadcast " +
+        testInfo.exec(
+            "su 0 am broadcast " +
                 "-a com.google.gservices.intent.action.GSERVICES_OVERRIDE " +
-                "-e finsky.play_services_auto_update_enabled false")
+                "-e finsky.play_services_auto_update_enabled false"
+        )
     }
 
     private fun clearGmsUpdateOverride(testInfo: TestInformation) {
-        testInfo.exec("su 0 am broadcast " +
+        testInfo.exec(
+            "su 0 am broadcast " +
                 "-a com.google.gservices.intent.action.GSERVICES_OVERRIDE " +
-                "--esn finsky.play_services_auto_update_enabled")
+                "--esn finsky.play_services_auto_update_enabled"
+        )
     }
 
     private fun setUpdaterNetworkingEnabled(
@@ -136,17 +172,27 @@
             testInfo.exec("cmd connectivity get-chain3-enabled").contains("chain:enabled")
 
     private fun getUpdaterPkgsStatus(testInfo: TestInformation) =
-            UPDATER_PKGS.associateWith { pkg ->
-                !testInfo.exec("cmd connectivity get-package-networking-enabled $pkg")
-                        .contains(":deny")
-            }
+        UPDATER_PKGS.associateWith { pkg ->
+            !testInfo.exec("cmd connectivity get-package-networking-enabled $pkg")
+                .contains(":deny")
+        }
+
+    private fun refreshTime(testInfo: TestInformation,) {
+        // Forces a synchronous time refresh using the network. Time is fetched synchronously but
+        // this does not guarantee that system time is updated when it returns.
+        // This avoids flakes where the system clock rolls back, for example when using test
+        // settings like test_url_expiration_time in NetworkMonitor.
+        testInfo.exec("cmd network_time_update_service force_refresh")
+    }
 
     override fun tearDown(testInfo: TestInformation, e: Throwable?) {
         if (isTearDownDisabled) return
         installer.tearDown(testInfo, e)
-        setUpdaterNetworkingEnabled(testInfo,
-                enableChain = originalTestChainEnabled,
-                enablePkgs = originalUpdaterPkgsStatus)
+        setUpdaterNetworkingEnabled(
+            testInfo,
+            enableChain = originalTestChainEnabled,
+            enablePkgs = originalUpdaterPkgsStatus
+        )
         clearGmsUpdateOverride(testInfo)
     }
 }
diff --git a/staticlibs/testutils/hostdevice/com/android/testutils/ConcurrentUtils.kt b/staticlibs/testutils/hostdevice/com/android/testutils/ConcurrentUtils.kt
index af4f96d..c6e5f25 100644
--- a/staticlibs/testutils/hostdevice/com/android/testutils/ConcurrentUtils.kt
+++ b/staticlibs/testutils/hostdevice/com/android/testutils/ConcurrentUtils.kt
@@ -19,10 +19,77 @@
 package com.android.testutils
 
 import java.util.concurrent.CountDownLatch
+import java.util.concurrent.ExecutorService
 import java.util.concurrent.TimeUnit
+import java.util.function.Consumer
 import kotlin.system.measureTimeMillis
+import kotlin.test.assertFalse
+import kotlin.test.assertTrue
 
 // For Java usage
 fun durationOf(fn: Runnable) = measureTimeMillis { fn.run() }
 
 fun CountDownLatch.await(timeoutMs: Long): Boolean = await(timeoutMs, TimeUnit.MILLISECONDS)
+
+/**
+ * Quit resources provided as a list by a supplier.
+ *
+ * The supplier may return more resources as the process progresses, for example while interrupting
+ * threads and waiting for them to finish they may spawn more threads, so this implements a
+ * [maxRetryCount] which, in this case, would be the maximum length of the thread chain that can be
+ * terminated.
+ */
+fun <T> quitResources(
+    maxRetryCount: Int,
+    supplier: () -> List<T>,
+    terminator: Consumer<T>
+) {
+    // Run it multiple times since new threads might be generated in a thread
+    // that is about to be terminated
+    for (retryCount in 0 until maxRetryCount) {
+        val resourcesToBeCleared = supplier()
+        if (resourcesToBeCleared.isEmpty()) return
+        for (resource in resourcesToBeCleared) {
+            terminator.accept(resource)
+        }
+    }
+    assertEmpty(supplier())
+}
+
+/**
+ * Implementation of [quitResources] to interrupt and wait for [ExecutorService]s to finish.
+ */
+@JvmOverloads
+fun quitExecutorServices(
+    maxRetryCount: Int,
+    interrupt: Boolean = true,
+    timeoutMs: Long = 10_000L,
+    supplier: () -> List<ExecutorService>
+) {
+    quitResources(maxRetryCount, supplier) { ecs ->
+        if (interrupt) {
+            ecs.shutdownNow()
+        }
+        assertTrue(ecs.awaitTermination(timeoutMs, TimeUnit.MILLISECONDS),
+            "ExecutorServices did not terminate within timeout")
+    }
+}
+
+/**
+ * Implementation of [quitResources] to interrupt and wait for [Thread]s to finish.
+ */
+@JvmOverloads
+fun quitThreads(
+    maxRetryCount: Int,
+    interrupt: Boolean = true,
+    timeoutMs: Long = 10_000L,
+    supplier: () -> List<Thread>
+) {
+    quitResources(maxRetryCount, supplier) { th ->
+        if (interrupt) {
+            th.interrupt()
+        }
+        th.join(timeoutMs)
+        assertFalse(th.isAlive, "Threads did not terminate within timeout.")
+    }
+}
diff --git a/tests/common/Android.bp b/tests/common/Android.bp
index 6e9d614..e95a81a 100644
--- a/tests/common/Android.bp
+++ b/tests/common/Android.bp
@@ -201,3 +201,8 @@
     name: "connectivity-mainline-presubmit-java-defaults",
     test_mainline_modules: mainline_presubmit_modules,
 }
+
+filegroup {
+    name: "connectivity_mainline_test_map",
+    srcs: ["connectivity_mainline_test.map"],
+}
diff --git a/tests/common/connectivity_mainline_test.map b/tests/common/connectivity_mainline_test.map
new file mode 100644
index 0000000..043312e
--- /dev/null
+++ b/tests/common/connectivity_mainline_test.map
@@ -0,0 +1,27 @@
+#
+# Copyright (C) 2024 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Some connectivity tests run on older OS versions, and for those tests, many
+# library dependencies (such as libbase and libc++) need to be linked
+# statically. The tests also need to be linked with a version script to ensure
+# that the statically-linked library isn't exported from the executable, where
+# it would override the shared libraries that the OS itself uses. See
+# b/333438055 for an example of what goes wrong when libc++ is partially
+# exported from an executable.
+{
+  local:
+    *;
+};
diff --git a/tests/common/java/android/net/NetworkCapabilitiesTest.java b/tests/common/java/android/net/NetworkCapabilitiesTest.java
index 6eb56c7b..0f0e2f1 100644
--- a/tests/common/java/android/net/NetworkCapabilitiesTest.java
+++ b/tests/common/java/android/net/NetworkCapabilitiesTest.java
@@ -61,6 +61,7 @@
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI_AWARE;
 import static android.os.Process.INVALID_UID;
+
 import static com.android.modules.utils.build.SdkLevel.isAtLeastS;
 import static com.android.modules.utils.build.SdkLevel.isAtLeastT;
 import static com.android.modules.utils.build.SdkLevel.isAtLeastV;
@@ -68,6 +69,7 @@
 import static com.android.testutils.MiscAsserts.assertEmpty;
 import static com.android.testutils.MiscAsserts.assertThrows;
 import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -83,21 +85,25 @@
 import android.os.Build;
 import android.util.ArraySet;
 import android.util.Range;
+
 import androidx.test.filters.SmallTest;
+
 import com.android.testutils.CompatUtil;
 import com.android.testutils.ConnectivityModuleTest;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.DevSdkIgnoreRunner;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Set;
+
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mockito;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+
 @SmallTest
 @RunWith(DevSdkIgnoreRunner.class)
 // NetworkCapabilities is only updatable on S+, and this test covers behavior which implementation
@@ -1465,4 +1471,26 @@
         assertEquals("-SUPL-VALIDATED-CAPTIVE_PORTAL+MMS+OEM_PAID",
                 nc1.describeCapsDifferencesFrom(nc2));
     }
+
+    @Test
+    public void testInvalidCapability() {
+        final int invalidCapability = Integer.MAX_VALUE;
+        // Passing invalid capability does not throw
+        final NetworkCapabilities nc1 = new NetworkCapabilities.Builder()
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .addForbiddenCapability(NET_CAPABILITY_NOT_ROAMING)
+                .removeCapability(invalidCapability)
+                .removeForbiddenCapability(invalidCapability)
+                .addCapability(invalidCapability)
+                .addForbiddenCapability(invalidCapability)
+                .build();
+
+        final NetworkCapabilities nc2 = new NetworkCapabilities.Builder()
+                .addCapability(NET_CAPABILITY_INTERNET)
+                .addForbiddenCapability(NET_CAPABILITY_NOT_ROAMING)
+                .build();
+
+        // nc1 and nc2 are the same since invalid capability is ignored
+        assertEquals(nc1, nc2);
+    }
 }
diff --git a/tests/common/java/android/net/nsd/NsdServiceInfoTest.java b/tests/common/java/android/net/nsd/NsdServiceInfoTest.java
index 8e89037..21e34ab 100644
--- a/tests/common/java/android/net/nsd/NsdServiceInfoTest.java
+++ b/tests/common/java/android/net/nsd/NsdServiceInfoTest.java
@@ -16,6 +16,7 @@
 
 package android.net.nsd;
 
+import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertThrows;
@@ -51,6 +52,23 @@
 
     private static final InetAddress IPV4_ADDRESS = InetAddresses.parseNumericAddress("192.0.2.1");
     private static final InetAddress IPV6_ADDRESS = InetAddresses.parseNumericAddress("2001:db8::");
+    private static final byte[] PUBLIC_KEY_RDATA = new byte[] {
+            (byte) 0x02, (byte)0x01,  // flag
+            (byte) 0x03, // protocol
+            (byte) 0x0d, // algorithm
+            // 64-byte public key below
+            (byte) 0xC1, (byte) 0x41, (byte) 0xD0, (byte) 0x63, (byte) 0x79, (byte) 0x60,
+            (byte) 0xB9, (byte) 0x8C, (byte) 0xBC, (byte) 0x12, (byte) 0xCF, (byte) 0xCA,
+            (byte) 0x22, (byte) 0x1D, (byte) 0x28, (byte) 0x79, (byte) 0xDA, (byte) 0xC2,
+            (byte) 0x6E, (byte) 0xE5, (byte) 0xB4, (byte) 0x60, (byte) 0xE9, (byte) 0x00,
+            (byte) 0x7C, (byte) 0x99, (byte) 0x2E, (byte) 0x19, (byte) 0x02, (byte) 0xD8,
+            (byte) 0x97, (byte) 0xC3, (byte) 0x91, (byte) 0xB0, (byte) 0x37, (byte) 0x64,
+            (byte) 0xD4, (byte) 0x48, (byte) 0xF7, (byte) 0xD0, (byte) 0xC7, (byte) 0x72,
+            (byte) 0xFD, (byte) 0xB0, (byte) 0x3B, (byte) 0x1D, (byte) 0x9D, (byte) 0x6D,
+            (byte) 0x52, (byte) 0xFF, (byte) 0x88, (byte) 0x86, (byte) 0x76, (byte) 0x9E,
+            (byte) 0x8E, (byte) 0x23, (byte) 0x62, (byte) 0x51, (byte) 0x35, (byte) 0x65,
+            (byte) 0x27, (byte) 0x09, (byte) 0x62, (byte) 0xD3
+    };
 
     @Test
     public void testLimits() throws Exception {
@@ -120,6 +138,7 @@
         fullInfo.setPort(4242);
         fullInfo.setHostAddresses(List.of(IPV4_ADDRESS));
         fullInfo.setHostname("home");
+        fullInfo.setPublicKey(PUBLIC_KEY_RDATA);
         fullInfo.setNetwork(new Network(123));
         fullInfo.setInterfaceIndex(456);
         checkParcelable(fullInfo);
@@ -136,6 +155,7 @@
         attributedInfo.setPort(4242);
         attributedInfo.setHostAddresses(List.of(IPV6_ADDRESS, IPV4_ADDRESS));
         attributedInfo.setHostname("home");
+        attributedInfo.setPublicKey(PUBLIC_KEY_RDATA);
         attributedInfo.setAttribute("color", "pink");
         attributedInfo.setAttribute("sound", (new String("にゃあ")).getBytes("UTF-8"));
         attributedInfo.setAttribute("adorable", (String) null);
@@ -172,6 +192,7 @@
         assertEquals(original.getServiceType(), result.getServiceType());
         assertEquals(original.getHost(), result.getHost());
         assertEquals(original.getHostname(), result.getHostname());
+        assertArrayEquals(original.getPublicKey(), result.getPublicKey());
         assertTrue(original.getPort() == result.getPort());
         assertEquals(original.getNetwork(), result.getNetwork());
         assertEquals(original.getInterfaceIndex(), result.getInterfaceIndex());
diff --git a/tests/cts/OWNERS b/tests/cts/OWNERS
index cb4ca59..acf506d 100644
--- a/tests/cts/OWNERS
+++ b/tests/cts/OWNERS
@@ -9,4 +9,6 @@
 # For incremental changes on EthernetManagerTest to increase coverage for existing behavior and for
 # testing bug fixes.
 per-file net/src/android/net/cts/EthernetManagerTest.kt = prohr@google.com #{LAST_RESORT_SUGGESTION}
+# Temporary ownership to develop APF CTS tests.
+per-file net/src/android/net/cts/ApfIntegrationTest.kt = prohr@google.com #{LAST_RESORT_SUGGESTION}
 
diff --git a/tests/cts/hostside-network-policy/Android.bp b/tests/cts/hostside-network-policy/Android.bp
new file mode 100644
index 0000000..c3ce0b9
--- /dev/null
+++ b/tests/cts/hostside-network-policy/Android.bp
@@ -0,0 +1,46 @@
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_team: "trendy_team_framework_backstage_power",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+java_test_host {
+    name: "CtsHostsideNetworkPolicyTests",
+    defaults: ["cts_defaults"],
+    // Only compile source java files in this apk.
+    srcs: [
+        "src/**/*.java",
+        ":ArgumentConstants",
+    ],
+    libs: [
+        "cts-tradefed",
+        "tradefed",
+    ],
+    static_libs: [
+        "modules-utils-build-testing",
+    ],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "general-tests",
+        "sts",
+    ],
+    data: [
+        ":CtsHostsideNetworkPolicyTestsApp",
+        ":CtsHostsideNetworkPolicyTestsApp2",
+    ],
+    per_testcase_directory: true,
+}
diff --git a/tests/cts/hostside-network-policy/AndroidTest.xml b/tests/cts/hostside-network-policy/AndroidTest.xml
new file mode 100644
index 0000000..44f77f8
--- /dev/null
+++ b/tests/cts/hostside-network-policy/AndroidTest.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<configuration description="Config for CTS network policy host test cases">
+    <option name="test-suite-tag" value="cts" />
+    <option name="config-descriptor:metadata" key="component" value="networking" />
+    <option name="config-descriptor:metadata" key="token" value="SIM_CARD" />
+    <option name="config-descriptor:metadata" key="parameter" value="instant_app" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.LocationCheck" />
+    <target_preparer class="com.android.cts.netpolicy.NetworkPolicyTestsPreparer" />
+
+    <!-- Enabling change id ALLOW_TEST_API_ACCESS allows that package to access @TestApi methods -->
+    <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
+        <option name="run-command" value="am compat enable ALLOW_TEST_API_ACCESS com.android.cts.netpolicy.hostside.app2" />
+        <option name="teardown-command" value="am compat reset ALLOW_TEST_API_ACCESS com.android.cts.netpolicy.hostside.app2" />
+        <option name="teardown-command" value="cmd power set-mode 0" />
+        <option name="teardown-command" value="cmd battery reset" />
+        <option name="teardown-command" value="cmd netpolicy stop-watching" />
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.DeviceSetup">
+        <option name="force-skip-system-props" value="true" />
+        <option name="set-global-setting" key="verifier_verify_adb_installs" value="0" />
+        <option name="set-global-setting" key="low_power_standby_enabled" value="0" />
+    </target_preparer>
+
+    <test class="com.android.compatibility.common.tradefed.testtype.JarHostTest" >
+        <option name="jar" value="CtsHostsideNetworkPolicyTests.jar" />
+        <option name="runtime-hint" value="3m56s" />
+    </test>
+
+    <metrics_collector class="com.android.tradefed.device.metric.FilePullerLogCollector">
+        <option name="directory-keys" value="/sdcard/CtsHostsideNetworkPolicyTests" />
+        <option name="collect-on-run-ended-only" value="true" />
+    </metrics_collector>
+</configuration>
diff --git a/tests/cts/hostside-network-policy/OWNERS b/tests/cts/hostside-network-policy/OWNERS
new file mode 100644
index 0000000..ea83e61
--- /dev/null
+++ b/tests/cts/hostside-network-policy/OWNERS
@@ -0,0 +1,3 @@
+# Bug component: 61373
+# Inherits parent owners
+include platform/frameworks/base:/services/core/java/com/android/server/net/OWNERS
diff --git a/tests/cts/hostside-network-policy/TEST_MAPPING b/tests/cts/hostside-network-policy/TEST_MAPPING
new file mode 100644
index 0000000..57ac4f7
--- /dev/null
+++ b/tests/cts/hostside-network-policy/TEST_MAPPING
@@ -0,0 +1,27 @@
+{
+  "presubmit-large": [
+    {
+      "name": "CtsHostsideNetworkPolicyTests",
+      "options": [
+        {
+          "exclude-annotation": "android.platform.test.annotations.FlakyTest"
+        },
+        {
+          "exclude-annotation": "android.platform.test.annotations.RequiresDevice"
+        }
+      ]
+    }
+  ],
+  "postsubmit": [
+    {
+      // Postsubmit on virtual devices to monitor flakiness of all tests that don't require a
+      // physical device
+      "name": "CtsHostsideNetworkPolicyTests",
+      "options": [
+        {
+          "exclude-annotation": "androidx.test.filters.RequiresDevice"
+        }
+      ]
+    }
+  ]
+}
diff --git a/tests/cts/hostside-network-policy/aidl/Android.bp b/tests/cts/hostside-network-policy/aidl/Android.bp
new file mode 100644
index 0000000..b182090
--- /dev/null
+++ b/tests/cts/hostside-network-policy/aidl/Android.bp
@@ -0,0 +1,26 @@
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_team: "trendy_team_framework_backstage_power",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+java_test_helper_library {
+    name: "CtsHostsideNetworkPolicyTestsAidl",
+    sdk_version: "current",
+    srcs: [
+        "com/android/cts/netpolicy/hostside/*.aidl",
+    ],
+}
diff --git a/tests/cts/hostside/aidl/com/android/cts/net/hostside/IMyService.aidl b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/IMyService.aidl
similarity index 82%
rename from tests/cts/hostside/aidl/com/android/cts/net/hostside/IMyService.aidl
rename to tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/IMyService.aidl
index e7b2815..068d9d8 100644
--- a/tests/cts/hostside/aidl/com/android/cts/net/hostside/IMyService.aidl
+++ b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/IMyService.aidl
@@ -14,16 +14,17 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import android.app.job.JobInfo;
 
-import com.android.cts.net.hostside.INetworkCallback;
+import com.android.cts.netpolicy.hostside.INetworkCallback;
+import com.android.cts.netpolicy.hostside.NetworkCheckResult;
 
 interface IMyService {
     void registerBroadcastReceiver();
     int getCounters(String receiverName, String action);
-    String checkNetworkStatus();
+    NetworkCheckResult checkNetworkStatus(String customUrl);
     String getRestrictBackgroundStatus();
     void sendNotification(int notificationId, String notificationType);
     void registerNetworkCallback(in NetworkRequest request, in INetworkCallback cb);
diff --git a/tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkCallback.aidl b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkCallback.aidl
similarity index 95%
rename from tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkCallback.aidl
rename to tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkCallback.aidl
index 2048bab..38efc7b 100644
--- a/tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkCallback.aidl
+++ b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkCallback.aidl
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import android.net.Network;
 import android.net.NetworkCapabilities;
diff --git a/tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkStateObserver.aidl b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkStateObserver.aidl
similarity index 78%
rename from tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkStateObserver.aidl
rename to tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkStateObserver.aidl
index 19198c5..c6b7a1c 100644
--- a/tests/cts/hostside/aidl/com/android/cts/net/hostside/INetworkStateObserver.aidl
+++ b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/INetworkStateObserver.aidl
@@ -14,10 +14,14 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
+
+import android.net.NetworkInfo;
+
+import com.android.cts.netpolicy.hostside.NetworkCheckResult;
 
 interface INetworkStateObserver {
-    void onNetworkStateChecked(int resultCode, String resultData);
+    void onNetworkStateChecked(int resultCode, in NetworkCheckResult networkCheckResult);
 
     const int RESULT_SUCCESS_NETWORK_STATE_CHECKED = 0;
     const int RESULT_ERROR_UNEXPECTED_PROC_STATE = 1;
diff --git a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/NetworkCheckResult.aidl
similarity index 74%
copy from tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
copy to tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/NetworkCheckResult.aidl
index 472e347..7aac2ab 100644
--- a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
+++ b/tests/cts/hostside-network-policy/aidl/com/android/cts/netpolicy/hostside/NetworkCheckResult.aidl
@@ -14,8 +14,13 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.arguments;
+package com.android.cts.netpolicy.hostside;
 
-public interface InstrumentationArguments {
-    String ARG_WAIVE_BIND_PRIORITY = "waive_bind_priority";
-}
+import android.net.NetworkInfo;
+
+@JavaDerive(toString=true)
+parcelable NetworkCheckResult {
+   boolean connected;
+   String details;
+   NetworkInfo networkInfo;
+}
\ No newline at end of file
diff --git a/tests/cts/hostside-network-policy/app/Android.bp b/tests/cts/hostside-network-policy/app/Android.bp
new file mode 100644
index 0000000..a31c843
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app/Android.bp
@@ -0,0 +1,57 @@
+//
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    default_team: "trendy_team_framework_backstage_power",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+java_defaults {
+    name: "CtsHostsideNetworkPolicyTestsAppDefaults",
+    platform_apis: true,
+    static_libs: [
+        "CtsHostsideNetworkPolicyTestsAidl",
+        "androidx.test.ext.junit",
+        "androidx.test.rules",
+        "androidx.test.uiautomator_uiautomator",
+        "compatibility-device-util-axt",
+        "cts-net-utils",
+        "ctstestrunner-axt",
+        "modules-utils-build",
+    ],
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+    ],
+    srcs: [
+        "src/**/*.java",
+        ":ArgumentConstants",
+    ],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "general-tests",
+        "sts",
+    ],
+}
+
+android_test_helper_app {
+    name: "CtsHostsideNetworkPolicyTestsApp",
+    defaults: [
+        "cts_support_defaults",
+        "framework-connectivity-test-defaults",
+        "CtsHostsideNetworkPolicyTestsAppDefaults",
+    ],
+}
diff --git a/tests/cts/hostside-network-policy/app/AndroidManifest.xml b/tests/cts/hostside-network-policy/app/AndroidManifest.xml
new file mode 100644
index 0000000..f19e35f
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app/AndroidManifest.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+     package="com.android.cts.netpolicy.hostside">
+
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
+    <uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"/>
+    <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+
+    <application android:requestLegacyExternalStorage="true">
+        <uses-library android:name="android.test.runner"/>
+        <service android:name=".MyNotificationListenerService"
+             android:label="MyNotificationListenerService"
+             android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE"
+             android:exported="true">
+            <intent-filter>
+                <action android:name="android.service.notification.NotificationListenerService"/>
+            </intent-filter>
+        </service>
+    </application>
+
+    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
+         android:targetPackage="com.android.cts.netpolicy.hostside"/>
+
+</manifest>
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractAppIdleTestCase.java
similarity index 96%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractAppIdleTestCase.java
index d9ff539..19e4364 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractAppIdleTestCase.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractAppIdleTestCase.java
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.APP_STANDBY_MODE;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.APP_STANDBY_MODE;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
 
 import static org.junit.Assert.assertEquals;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractBatterySaverModeTestCase.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractBatterySaverModeTestCase.java
similarity index 96%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractBatterySaverModeTestCase.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractBatterySaverModeTestCase.java
index 0d7365f..ae226e2 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractBatterySaverModeTestCase.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractBatterySaverModeTestCase.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDefaultRestrictionsTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDefaultRestrictionsTest.java
similarity index 75%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDefaultRestrictionsTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDefaultRestrictionsTest.java
index 8a3e790..00f67f4 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDefaultRestrictionsTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDefaultRestrictionsTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static android.app.ActivityManager.PROCESS_STATE_TOP_SLEEPING;
+import static android.app.ActivityManager.PROCESS_STATE_LAST_ACTIVITY;
 
 import static org.junit.Assume.assumeTrue;
 
@@ -46,14 +46,15 @@
     public final void tearDown() throws Exception {
         super.tearDown();
 
+        stopApp();
         removePowerSaveModeWhitelist(TEST_APP2_PKG);
         removePowerSaveModeExceptIdleWhitelist(TEST_APP2_PKG);
     }
 
     @Test
     public void testFgsNetworkAccess() throws Exception {
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-        SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
+        SystemClock.sleep(mProcessStateTransitionShortDelayMs);
         assertNetworkAccess(false, null);
 
         launchComponentAndAssertNetworkAccess(TYPE_COMPONENT_FOREGROUND_SERVICE);
@@ -61,8 +62,8 @@
 
     @Test
     public void testActivityNetworkAccess() throws Exception {
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-        SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
+        SystemClock.sleep(mProcessStateTransitionShortDelayMs);
         assertNetworkAccess(false, null);
 
         launchComponentAndAssertNetworkAccess(TYPE_COMPONENT_ACTIVTIY);
@@ -70,23 +71,23 @@
 
     @Test
     public void testBackgroundNetworkAccess_inFullAllowlist() throws Exception {
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-        SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
+        SystemClock.sleep(mProcessStateTransitionShortDelayMs);
         assertNetworkAccess(false, null);
 
         addPowerSaveModeWhitelist(TEST_APP2_PKG);
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
         assertNetworkAccess(true, null);
     }
 
     @Test
     public void testBackgroundNetworkAccess_inExceptIdleAllowlist() throws Exception {
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-        SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
+        SystemClock.sleep(mProcessStateTransitionShortDelayMs);
         assertNetworkAccess(false, null);
 
         addPowerSaveModeExceptIdleWhitelist(TEST_APP2_PKG);
-        assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
+        assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
         assertNetworkAccess(true, null);
     }
 }
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDozeModeTestCase.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDozeModeTestCase.java
similarity index 95%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDozeModeTestCase.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDozeModeTestCase.java
index b037953..0c8cb70 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractDozeModeTestCase.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractDozeModeTestCase.java
@@ -14,12 +14,12 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE;
 
-import static com.android.cts.net.hostside.Property.DOZE_MODE;
-import static com.android.cts.net.hostside.Property.NOT_LOW_RAM_DEVICE;
+import static com.android.cts.netpolicy.hostside.Property.DOZE_MODE;
+import static com.android.cts.netpolicy.hostside.Property.NOT_LOW_RAM_DEVICE;
 
 import android.os.SystemClock;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractExpeditedJobTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractExpeditedJobTest.java
similarity index 88%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractExpeditedJobTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractExpeditedJobTest.java
index 7cac2af..5435920 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractExpeditedJobTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractExpeditedJobTest.java
@@ -14,14 +14,14 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.APP_STANDBY_MODE;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DOZE_MODE;
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.APP_STANDBY_MODE;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DOZE_MODE;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractRestrictBackgroundNetworkTestCase.java
similarity index 88%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractRestrictBackgroundNetworkTestCase.java
index 2ca8832..0f5f58c 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AbstractRestrictBackgroundNetworkTestCase.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AbstractRestrictBackgroundNetworkTestCase.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE;
 import static android.app.ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE;
@@ -23,17 +23,18 @@
 import static android.net.ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED;
 import static android.os.BatteryManager.BATTERY_PLUGGED_ANY;
 
-import static com.android.cts.net.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.executeShellCommand;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.forceRunJob;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getConnectivityManager;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getContext;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getInstrumentation;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isAppStandbySupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isBatterySaverSupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isDozeModeSupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.restrictBackgroundValueToString;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackgroundInternal;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_CONNECTION_CHECK_CUSTOM_URL;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.executeShellCommand;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.forceRunJob;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.getConnectivityManager;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.getContext;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.getInstrumentation;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isAppStandbySupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isBatterySaverSupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isDozeModeSupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.restrictBackgroundValueToString;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackgroundInternal;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -51,6 +52,7 @@
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
 import android.net.NetworkInfo.DetailedState;
 import android.net.NetworkInfo.State;
 import android.net.NetworkRequest;
@@ -78,10 +80,10 @@
 import org.junit.rules.RuleChain;
 import org.junit.runner.RunWith;
 
-import java.util.ArrayList;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Predicate;
 
 /**
@@ -91,10 +93,15 @@
 public abstract class AbstractRestrictBackgroundNetworkTestCase {
     public static final String TAG = "RestrictBackgroundNetworkTests";
 
-    protected static final String TEST_PKG = "com.android.cts.net.hostside";
-    protected static final String TEST_APP2_PKG = "com.android.cts.net.hostside.app2";
+    protected static final String TEST_PKG = "com.android.cts.netpolicy.hostside";
+    protected static final String TEST_APP2_PKG = "com.android.cts.netpolicy.hostside.app2";
     // TODO(b/321797685): Configure it via device-config once it is available.
-    protected static final long PROCESS_STATE_TRANSITION_DELAY_MS = TimeUnit.SECONDS.toMillis(5);
+    protected final long mProcessStateTransitionLongDelayMs =
+            useDifferentDelaysForBackgroundChain() ? TimeUnit.SECONDS.toMillis(20)
+                    : TimeUnit.SECONDS.toMillis(5);
+    protected final long mProcessStateTransitionShortDelayMs =
+            useDifferentDelaysForBackgroundChain() ? TimeUnit.SECONDS.toMillis(2)
+                    : TimeUnit.SECONDS.toMillis(5);
 
     private static final String TEST_APP2_ACTIVITY_CLASS = TEST_APP2_PKG + ".MyActivity";
     private static final String TEST_APP2_SERVICE_CLASS = TEST_APP2_PKG + ".MyForegroundService";
@@ -110,17 +117,17 @@
     private static final String MANIFEST_RECEIVER = "ManifestReceiver";
     private static final String DYNAMIC_RECEIVER = "DynamicReceiver";
     private static final String ACTION_FINISH_ACTIVITY =
-            "com.android.cts.net.hostside.app2.action.FINISH_ACTIVITY";
+            "com.android.cts.netpolicy.hostside.app2.action.FINISH_ACTIVITY";
     private static final String ACTION_FINISH_JOB =
-            "com.android.cts.net.hostside.app2.action.FINISH_JOB";
+            "com.android.cts.netpolicy.hostside.app2.action.FINISH_JOB";
     // Copied from com.android.server.net.NetworkPolicyManagerService class
     private static final String ACTION_SNOOZE_WARNING =
             "com.android.server.net.action.SNOOZE_WARNING";
 
     private static final String ACTION_RECEIVER_READY =
-            "com.android.cts.net.hostside.app2.action.RECEIVER_READY";
+            "com.android.cts.netpolicy.hostside.app2.action.RECEIVER_READY";
     static final String ACTION_SHOW_TOAST =
-            "com.android.cts.net.hostside.app2.action.SHOW_TOAST";
+            "com.android.cts.netpolicy.hostside.app2.action.SHOW_TOAST";
 
     protected static final String NOTIFICATION_TYPE_CONTENT = "CONTENT";
     protected static final String NOTIFICATION_TYPE_DELETE = "DELETE";
@@ -136,6 +143,7 @@
 
     private static final String KEY_NETWORK_STATE_OBSERVER = TEST_PKG + ".observer";
     private static final String KEY_SKIP_VALIDATION_CHECKS = TEST_PKG + ".skip_validation_checks";
+    private static final String KEY_CUSTOM_URL = TEST_PKG + ".custom_url";
 
     private static final String EMPTY_STRING = "";
 
@@ -165,6 +173,7 @@
     protected ConnectivityManager mCm;
     protected int mUid;
     private int mMyUid;
+    private @Nullable String mCustomUrl;
     private MyServiceClient mServiceClient;
     private DeviceConfigStateHelper mDeviceIdleDeviceConfigStateHelper;
     private PowerManager mPowerManager;
@@ -185,6 +194,11 @@
         mServiceClient = new MyServiceClient(mContext);
 
         final Bundle args = InstrumentationRegistry.getArguments();
+        mCustomUrl = args.getString(ARG_CONNECTION_CHECK_CUSTOM_URL);
+        if (mCustomUrl != null) {
+            Log.d(TAG, "Using custom URL " + mCustomUrl + " for network checks");
+        }
+
         final int bindPriorityFlags;
         if (Boolean.valueOf(args.getString(ARG_WAIVE_BIND_PRIORITY, "false"))) {
             bindPriorityFlags = Context.BIND_WAIVE_PRIORITY;
@@ -232,6 +246,22 @@
         return Boolean.parseBoolean(output);
     }
 
+    /**
+     * Check if the flag to use different delays for sensitive proc-states is enabled.
+     * This is a manual check because the feature flag infrastructure may not be available
+     * in all the branches that will get this code.
+     * TODO: b/322115994 - Use @RequiresFlagsEnabled with
+     * Flags.FLAG_USE_DIFFERENT_DELAYS_FOR_BACKGROUND_CHAIN once the tests are moved to cts.
+     */
+    private boolean useDifferentDelaysForBackgroundChain() {
+        if (!SdkLevel.isAtLeastV()) {
+            return false;
+        }
+        final String output = executeShellCommand("device_config get backstage_power"
+                + " com.android.server.net.use_different_delays_for_background_chain");
+        return Boolean.parseBoolean(output);
+    }
+
     protected int getUid(String packageName) throws Exception {
         return mContext.getPackageManager().getPackageUid(packageName, 0);
     }
@@ -502,25 +532,23 @@
      */
     private String checkNetworkAccess(boolean expectAvailable,
             @Nullable final String expectedUnavailableError) throws Exception {
-        final String resultData = mServiceClient.checkNetworkStatus();
-        return checkForAvailabilityInResultData(resultData, expectAvailable,
+        final NetworkCheckResult checkResult = mServiceClient.checkNetworkStatus(mCustomUrl);
+        return checkForAvailabilityInNetworkCheckResult(checkResult, expectAvailable,
                 expectedUnavailableError);
     }
 
-    private String checkForAvailabilityInResultData(String resultData, boolean expectAvailable,
-            @Nullable final String expectedUnavailableError) {
-        if (resultData == null) {
-            assertNotNull("Network status from app2 is null", resultData);
-        }
-        // Network status format is described on MyBroadcastReceiver.checkNetworkStatus()
-        final String[] parts = resultData.split(NETWORK_STATUS_SEPARATOR);
-        assertEquals("Wrong network status: " + resultData, 5, parts.length);
-        final State state = parts[0].equals("null") ? null : State.valueOf(parts[0]);
-        final DetailedState detailedState = parts[1].equals("null")
-                ? null : DetailedState.valueOf(parts[1]);
-        final boolean connected = Boolean.valueOf(parts[2]);
-        final String connectionCheckDetails = parts[3];
-        final String networkInfo = parts[4];
+    private String checkForAvailabilityInNetworkCheckResult(NetworkCheckResult networkCheckResult,
+            boolean expectAvailable, @Nullable final String expectedUnavailableError) {
+        assertNotNull("NetworkCheckResult from app2 is null", networkCheckResult);
+
+        final NetworkInfo networkInfo = networkCheckResult.networkInfo;
+        assertNotNull("NetworkInfo from app2 is null", networkInfo);
+
+        final State state = networkInfo.getState();
+        final DetailedState detailedState = networkInfo.getDetailedState();
+
+        final boolean connected = networkCheckResult.connected;
+        final String connectionCheckDetails = networkCheckResult.details;
 
         final StringBuilder errors = new StringBuilder();
         final State expectedState;
@@ -817,6 +845,10 @@
         assertDelayedShellCommand("dumpsys deviceidle get deep", enabled ? "IDLE" : "ACTIVE");
     }
 
+    protected void stopApp() {
+        executeSilentShellCommand("am stop-app " + TEST_APP2_PKG);
+    }
+
     protected void setAppIdle(boolean isIdle) throws Exception {
         setAppIdleNoAssert(isIdle);
         assertAppIdle(isIdle);
@@ -926,33 +958,36 @@
         if (type == TYPE_COMPONENT_FOREGROUND_SERVICE) {
             startForegroundService();
             assertForegroundServiceNetworkAccess();
-            return;
         } else if (type == TYPE_COMPONENT_ACTIVTIY) {
             turnScreenOn();
             final CountDownLatch latch = new CountDownLatch(1);
             final Intent launchIntent = getIntentForComponent(type);
             final Bundle extras = new Bundle();
-            final ArrayList<Pair<Integer, String>> result = new ArrayList<>(1);
+            final AtomicReference<Pair<Integer, NetworkCheckResult>> result =
+                    new AtomicReference<>();
             extras.putBinder(KEY_NETWORK_STATE_OBSERVER, getNewNetworkStateObserver(latch, result));
             extras.putBoolean(KEY_SKIP_VALIDATION_CHECKS, !expectAvailable);
+            extras.putString(KEY_CUSTOM_URL, mCustomUrl);
             launchIntent.putExtras(extras);
             mContext.startActivity(launchIntent);
             if (latch.await(ACTIVITY_NETWORK_STATE_TIMEOUT_MS, TimeUnit.MILLISECONDS)) {
-                final int resultCode = result.get(0).first;
-                final String resultData = result.get(0).second;
+                final int resultCode = result.get().first;
+                final NetworkCheckResult networkCheckResult = result.get().second;
                 if (resultCode == INetworkStateObserver.RESULT_SUCCESS_NETWORK_STATE_CHECKED) {
-                    final String error = checkForAvailabilityInResultData(
-                            resultData, expectAvailable, null /* expectedUnavailableError */);
+                    final String error = checkForAvailabilityInNetworkCheckResult(
+                            networkCheckResult, expectAvailable,
+                            null /* expectedUnavailableError */);
                     if (error != null) {
                         fail("Network is not available for activity in app2 (" + mUid + "): "
                                 + error);
                     }
                 } else if (resultCode == INetworkStateObserver.RESULT_ERROR_UNEXPECTED_PROC_STATE) {
-                    Log.d(TAG, resultData);
+                    Log.d(TAG, networkCheckResult.details);
                     // App didn't come to foreground when the activity is started, so try again.
                     assertTopNetworkAccess(true);
                 } else {
-                    fail("Unexpected resultCode=" + resultCode + "; received=[" + resultData + "]");
+                    fail("Unexpected resultCode=" + resultCode
+                            + "; networkCheckResult=[" + networkCheckResult + "]");
                 }
             } else {
                 fail("Timed out waiting for network availability status from app2's activity ("
@@ -960,10 +995,12 @@
             }
         } else if (type == TYPE_EXPEDITED_JOB) {
             final Bundle extras = new Bundle();
-            final ArrayList<Pair<Integer, String>> result = new ArrayList<>(1);
+            final AtomicReference<Pair<Integer, NetworkCheckResult>> result =
+                    new AtomicReference<>();
             final CountDownLatch latch = new CountDownLatch(1);
             extras.putBinder(KEY_NETWORK_STATE_OBSERVER, getNewNetworkStateObserver(latch, result));
             extras.putBoolean(KEY_SKIP_VALIDATION_CHECKS, !expectAvailable);
+            extras.putString(KEY_CUSTOM_URL, mCustomUrl);
             final JobInfo jobInfo = new JobInfo.Builder(TEST_JOB_ID, TEST_JOB_COMPONENT)
                     .setExpedited(true)
                     .setRequiredNetworkType(JobInfo.NETWORK_TYPE_ANY)
@@ -973,11 +1010,12 @@
                     RESULT_SUCCESS, mServiceClient.scheduleJob(jobInfo));
             forceRunJob(TEST_APP2_PKG, TEST_JOB_ID);
             if (latch.await(JOB_NETWORK_STATE_TIMEOUT_MS, TimeUnit.MILLISECONDS)) {
-                final int resultCode = result.get(0).first;
-                final String resultData = result.get(0).second;
+                final int resultCode = result.get().first;
+                final NetworkCheckResult networkCheckResult = result.get().second;
                 if (resultCode == INetworkStateObserver.RESULT_SUCCESS_NETWORK_STATE_CHECKED) {
-                    final String error = checkForAvailabilityInResultData(
-                            resultData, expectAvailable, null /* expectedUnavailableError */);
+                    final String error = checkForAvailabilityInNetworkCheckResult(
+                            networkCheckResult, expectAvailable,
+                            null /* expectedUnavailableError */);
                     if (error != null) {
                         Log.d(TAG, "Network state is unexpected, checking again. " + error);
                         // Right now we could end up in an unexpected state if expedited job
@@ -985,7 +1023,8 @@
                         assertNetworkAccess(expectAvailable, false /* needScreenOn */);
                     }
                 } else {
-                    fail("Unexpected resultCode=" + resultCode + "; received=[" + resultData + "]");
+                    fail("Unexpected resultCode=" + resultCode
+                            + "; networkCheckResult=[" + networkCheckResult + "]");
                 }
             } else {
                 fail("Timed out waiting for network availability status from app2's expedited job ("
@@ -1028,11 +1067,12 @@
     }
 
     private Binder getNewNetworkStateObserver(final CountDownLatch latch,
-            final ArrayList<Pair<Integer, String>> result) {
+            final AtomicReference<Pair<Integer, NetworkCheckResult>> result) {
         return new INetworkStateObserver.Stub() {
             @Override
-            public void onNetworkStateChecked(int resultCode, String resultData) {
-                result.add(Pair.create(resultCode, resultData));
+            public void onNetworkStateChecked(int resultCode,
+                    NetworkCheckResult networkCheckResult) {
+                result.set(Pair.create(resultCode, networkCheckResult));
                 latch.countDown();
             }
         };
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleMeteredTest.java
index f1858d6..6b802f6 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 @RequiredProperties({METERED_NETWORK})
 public class AppIdleMeteredTest extends AbstractAppIdleTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleNonMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleNonMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleNonMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleNonMeteredTest.java
index e737a6d..2e725ae 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/AppIdleNonMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/AppIdleNonMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 @RequiredProperties({NON_METERED_NETWORK})
 public class AppIdleNonMeteredTest extends AbstractAppIdleTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeMeteredTest.java
index c78ca2e..2e421f6 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 @RequiredProperties({METERED_NETWORK})
 public class BatterySaverModeMeteredTest extends AbstractBatterySaverModeTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeNonMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeNonMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeNonMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeNonMeteredTest.java
index fb52a54..0be5644 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/BatterySaverModeNonMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/BatterySaverModeNonMeteredTest.java
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 @RequiredProperties({NON_METERED_NETWORK})
 public class BatterySaverModeNonMeteredTest extends AbstractBatterySaverModeTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ConnOnActivityStartTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ConnOnActivityStartTest.java
similarity index 79%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/ConnOnActivityStartTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ConnOnActivityStartTest.java
index c1d576d..bfccce9 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ConnOnActivityStartTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ConnOnActivityStartTest.java
@@ -14,20 +14,20 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE;
 import static android.app.ActivityManager.PROCESS_STATE_TOP_SLEEPING;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getUiDevice;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.APP_STANDBY_MODE;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DOZE_MODE;
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.getUiDevice;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.APP_STANDBY_MODE;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DOZE_MODE;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 import static org.junit.Assume.assumeTrue;
 
@@ -53,6 +53,7 @@
     @After
     public final void tearDown() throws Exception {
         super.tearDown();
+        stopApp();
         resetDeviceState();
     }
 
@@ -69,6 +70,7 @@
     @RequiredProperties({BATTERY_SAVER_MODE})
     public void testStartActivity_batterySaver() throws Exception {
         setBatterySaverMode(true);
+        assertNetworkAccess(false, null);
         assertLaunchedActivityHasNetworkAccess("testStartActivity_batterySaver", null);
     }
 
@@ -76,6 +78,7 @@
     @RequiredProperties({DATA_SAVER_MODE, METERED_NETWORK})
     public void testStartActivity_dataSaver() throws Exception {
         setRestrictBackground(true);
+        assertNetworkAccess(false, null);
         assertLaunchedActivityHasNetworkAccess("testStartActivity_dataSaver", null);
     }
 
@@ -83,6 +86,7 @@
     @RequiredProperties({DOZE_MODE})
     public void testStartActivity_doze() throws Exception {
         setDozeMode(true);
+        assertNetworkAccess(false, null);
         // TODO (235284115): We need to turn on Doze every time before starting
         // the activity.
         assertLaunchedActivityHasNetworkAccess("testStartActivity_doze", null);
@@ -93,6 +97,7 @@
     public void testStartActivity_appStandby() throws Exception {
         turnBatteryOn();
         setAppIdle(true);
+        assertNetworkAccess(false, null);
         // TODO (235284115): We need to put the app into app standby mode every
         // time before starting the activity.
         assertLaunchedActivityHasNetworkAccess("testStartActivity_appStandby", null);
@@ -103,7 +108,8 @@
         assumeTrue("Feature not enabled", isNetworkBlockedForTopSleepingAndAbove());
         assertLaunchedActivityHasNetworkAccess("testStartActivity_default", () -> {
             assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-            SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+            SystemClock.sleep(mProcessStateTransitionLongDelayMs);
+            assertNetworkAccess(false, null);
         });
     }
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DataSaverModeTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataSaverModeTest.java
similarity index 95%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DataSaverModeTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataSaverModeTest.java
index 790e031..66e0d00 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DataSaverModeTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataSaverModeTest.java
@@ -14,17 +14,17 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED;
 import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_WHITELISTED;
 
 import static com.android.compatibility.common.util.FeatureUtil.isTV;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
-import static com.android.cts.net.hostside.Property.NO_DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NO_DATA_SAVER_MODE;
 
 import static org.junit.Assert.fail;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DataWarningReceiverTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataWarningReceiverTest.java
similarity index 96%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DataWarningReceiverTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataWarningReceiverTest.java
index 13bbab6..69ca206 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DataWarningReceiverTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DataWarningReceiverTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.clearSnoozeTimestamps;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.clearSnoozeTimestamps;
 
 import android.content.pm.PackageManager;
 import android.telephony.SubscriptionManager;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsMeteredTest.java
similarity index 86%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsMeteredTest.java
index f3a1026..810fd19 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 @RequiredProperties({METERED_NETWORK})
 public class DefaultRestrictionsMeteredTest extends AbstractDefaultRestrictionsTest {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsNonMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsNonMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsNonMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsNonMeteredTest.java
index 5651dd0..fef546c 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DefaultRestrictionsNonMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DefaultRestrictionsNonMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 @RequiredProperties({NON_METERED_NETWORK})
 public class DefaultRestrictionsNonMeteredTest extends AbstractDefaultRestrictionsTest {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeMeteredTest.java
index 4306c99..741dd7e 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 @RequiredProperties({METERED_NETWORK})
 public class DozeModeMeteredTest extends AbstractDozeModeTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeNonMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeNonMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeNonMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeNonMeteredTest.java
index 1e89f15..f343df5 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DozeModeNonMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DozeModeNonMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 @RequiredProperties({NON_METERED_NETWORK})
 public class DozeModeNonMeteredTest extends AbstractDozeModeTestCase {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DumpOnFailureRule.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DumpOnFailureRule.java
similarity index 92%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/DumpOnFailureRule.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DumpOnFailureRule.java
index 07434b1..2dc6cc4 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/DumpOnFailureRule.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/DumpOnFailureRule.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
-import static com.android.cts.net.hostside.AbstractRestrictBackgroundNetworkTestCase.TEST_APP2_PKG;
-import static com.android.cts.net.hostside.AbstractRestrictBackgroundNetworkTestCase.TEST_PKG;
+import static com.android.cts.netpolicy.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
+import static com.android.cts.netpolicy.hostside.AbstractRestrictBackgroundNetworkTestCase.TEST_APP2_PKG;
+import static com.android.cts.netpolicy.hostside.AbstractRestrictBackgroundNetworkTestCase.TEST_PKG;
 
 import android.os.Environment;
 import android.os.FileUtils;
@@ -42,7 +42,7 @@
 
 public class DumpOnFailureRule extends OnFailureRule {
     private File mDumpDir = new File(Environment.getExternalStorageDirectory(),
-            "CtsHostsideNetworkTests");
+            "CtsHostsideNetworkPolicyTests");
 
     @Override
     public void onTestFailure(Statement base, Description description, Throwable throwable) {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobMeteredTest.java
index 3809534..d56a50b 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
 
 @RequiredProperties({METERED_NETWORK})
 public class ExpeditedJobMeteredTest extends AbstractExpeditedJobTest {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobNonMeteredTest.java
similarity index 85%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobNonMeteredTest.java
index 6596269..0a776ee 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/ExpeditedJobNonMeteredTest.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 @RequiredProperties({NON_METERED_NETWORK})
 public class ExpeditedJobNonMeteredTest extends AbstractExpeditedJobTest {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MeterednessConfigurationRule.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MeterednessConfigurationRule.java
similarity index 86%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/MeterednessConfigurationRule.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MeterednessConfigurationRule.java
index 5c99c67..4f4e68e 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MeterednessConfigurationRule.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MeterednessConfigurationRule.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setupActiveNetworkMeteredness;
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setupActiveNetworkMeteredness;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 import android.util.ArraySet;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MixedModesTest.java
similarity index 95%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MixedModesTest.java
index c9edda6..b0fa106 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MixedModesTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MixedModesTest.java
@@ -13,15 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.APP_STANDBY_MODE;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DOZE_MODE;
-import static com.android.cts.net.hostside.Property.METERED_NETWORK;
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.APP_STANDBY_MODE;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DOZE_MODE;
+import static com.android.cts.netpolicy.hostside.Property.METERED_NETWORK;
+import static com.android.cts.netpolicy.hostside.Property.NON_METERED_NETWORK;
 
 import android.os.SystemClock;
 import android.util.Log;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MyNotificationListenerService.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyNotificationListenerService.java
similarity index 98%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/MyNotificationListenerService.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyNotificationListenerService.java
index 0132536..6dc9921 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MyNotificationListenerService.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyNotificationListenerService.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import android.app.Notification;
 import android.app.PendingIntent;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MyServiceClient.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyServiceClient.java
similarity index 94%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/MyServiceClient.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyServiceClient.java
index 980ecd5..71b28f6 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/MyServiceClient.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/MyServiceClient.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import android.app.job.JobInfo;
 import android.content.ComponentName;
@@ -98,9 +98,10 @@
         return mService.getCounters(receiverName, action);
     }
 
-    public String checkNetworkStatus() throws RemoteException {
+    /** Retrieves the network state as observed from the bound test app */
+    public NetworkCheckResult checkNetworkStatus(String address) throws RemoteException {
         ensureServiceConnection();
-        return mService.checkNetworkStatus();
+        return mService.checkNetworkStatus(address);
     }
 
     public String getRestrictBackgroundStatus() throws RemoteException {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkCallbackTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkCallbackTest.java
similarity index 96%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkCallbackTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkCallbackTest.java
index 5552b8f..3934cfa 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkCallbackTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkCallbackTest.java
@@ -14,18 +14,18 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE;
 import static android.app.ActivityManager.PROCESS_STATE_TOP_SLEEPING;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
 import static android.net.NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.canChangeActiveNetworkMeteredness;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.getActiveNetworkCapabilities;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.canChangeActiveNetworkMeteredness;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.getActiveNetworkCapabilities;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
@@ -268,6 +268,7 @@
         setRestrictBackground(false);
         setBatterySaverMode(false);
         unregisterNetworkCallback();
+        stopApp();
 
         if (SdkLevel.isAtLeastT() && (mCtsNetUtils != null)) {
             mCtsNetUtils.restorePrivateDnsSetting();
@@ -387,7 +388,7 @@
 
             finishActivity();
             assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-            SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+            SystemClock.sleep(mProcessStateTransitionLongDelayMs);
             assertNetworkAccess(false, null);
             mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
             assertNetworkAccessBlockedByBpf(true, mUid, true /* metered */);
@@ -413,7 +414,7 @@
 
             finishActivity();
             assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-            SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+            SystemClock.sleep(mProcessStateTransitionLongDelayMs);
             assertNetworkAccess(false, null);
             mTestNetworkCallback.expectBlockedStatusCallbackEventually(mNetwork, true);
             assertNetworkAccessBlockedByBpf(true, mUid, false /* metered */);
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyManagerTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyManagerTest.java
similarity index 92%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyManagerTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyManagerTest.java
index 968e270..6c5f2ff 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyManagerTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyManagerTest.java
@@ -14,18 +14,19 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.app.ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE;
+import static android.app.ActivityManager.PROCESS_STATE_LAST_ACTIVITY;
 import static android.app.ActivityManager.PROCESS_STATE_TOP_SLEEPING;
 import static android.os.Process.SYSTEM_UID;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.assertIsUidRestrictedOnMeteredNetworks;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.assertNetworkingBlockedStatusForUid;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isUidNetworkingBlocked;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.setRestrictBackground;
-import static com.android.cts.net.hostside.Property.BATTERY_SAVER_MODE;
-import static com.android.cts.net.hostside.Property.DATA_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.assertIsUidRestrictedOnMeteredNetworks;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.assertNetworkingBlockedStatusForUid;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isUidNetworkingBlocked;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.setRestrictBackground;
+import static com.android.cts.netpolicy.hostside.Property.BATTERY_SAVER_MODE;
+import static com.android.cts.netpolicy.hostside.Property.DATA_SAVER_MODE;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
@@ -65,6 +66,7 @@
         setRestrictBackground(false);
         setRestrictedNetworkingMode(false);
         unregisterNetworkCallback();
+        stopApp();
     }
 
     @Test
@@ -248,8 +250,8 @@
         assumeTrue("Feature not enabled", isNetworkBlockedForTopSleepingAndAbove());
 
         try {
-            assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-            SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+            assertProcessStateBelow(PROCESS_STATE_LAST_ACTIVITY);
+            SystemClock.sleep(mProcessStateTransitionShortDelayMs);
             assertNetworkingBlockedStatusForUid(mUid, METERED, true /* expectedResult */);
             assertTrue(isUidNetworkingBlocked(mUid, NON_METERED));
 
@@ -260,7 +262,7 @@
 
             finishActivity();
             assertProcessStateBelow(PROCESS_STATE_TOP_SLEEPING);
-            SystemClock.sleep(PROCESS_STATE_TRANSITION_DELAY_MS);
+            SystemClock.sleep(mProcessStateTransitionLongDelayMs);
             assertNetworkingBlockedStatusForUid(mUid, METERED, true /* expectedResult */);
             assertTrue(isUidNetworkingBlocked(mUid, NON_METERED));
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestRunner.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestRunner.java
similarity index 96%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestRunner.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestRunner.java
index f340907..0207b00 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestRunner.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestRunner.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import androidx.test.internal.runner.junit4.AndroidJUnit4ClassRunner;
 
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestUtils.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestUtils.java
similarity index 98%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestUtils.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestUtils.java
index 5331601..26a88f2 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/NetworkPolicyTestUtils.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/NetworkPolicyTestUtils.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED;
 import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
@@ -26,7 +26,7 @@
 import static android.net.wifi.WifiConfiguration.METERED_OVERRIDE_NONE;
 
 import static com.android.compatibility.common.util.SystemUtil.runShellCommandOrThrow;
-import static com.android.cts.net.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
+import static com.android.cts.netpolicy.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotEquals;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/Property.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/Property.java
similarity index 72%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/Property.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/Property.java
index 18805f9..a03833f 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/Property.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/Property.java
@@ -13,15 +13,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.canChangeActiveNetworkMeteredness;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isActiveNetworkMetered;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isAppStandbySupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isBatterySaverSupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isDataSaverSupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isDozeModeSupported;
-import static com.android.cts.net.hostside.NetworkPolicyTestUtils.isLowRamDevice;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.canChangeActiveNetworkMeteredness;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isActiveNetworkMetered;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isAppStandbySupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isBatterySaverSupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isDataSaverSupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isDozeModeSupported;
+import static com.android.cts.netpolicy.hostside.NetworkPolicyTestUtils.isLowRamDevice;
 
 public enum Property {
     BATTERY_SAVER_MODE(1 << 0) {
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredProperties.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredProperties.java
similarity index 95%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredProperties.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredProperties.java
index 96838bb..799a513 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredProperties.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredProperties.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import static java.lang.annotation.ElementType.METHOD;
 import static java.lang.annotation.ElementType.TYPE;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredPropertiesRule.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredPropertiesRule.java
similarity index 95%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredPropertiesRule.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredPropertiesRule.java
index 01f9f3e..5dea67c 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RequiredPropertiesRule.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RequiredPropertiesRule.java
@@ -13,9 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
-import static com.android.cts.net.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
+import static com.android.cts.netpolicy.hostside.AbstractRestrictBackgroundNetworkTestCase.TAG;
 
 import android.text.TextUtils;
 import android.util.ArraySet;
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RestrictedModeTest.java b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RestrictedModeTest.java
similarity index 97%
rename from tests/cts/hostside/app/src/com/android/cts/net/hostside/RestrictedModeTest.java
rename to tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RestrictedModeTest.java
index 4777bf4..f183f4e 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/RestrictedModeTest.java
+++ b/tests/cts/hostside-network-policy/app/src/com/android/cts/netpolicy/hostside/RestrictedModeTest.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package com.android.cts.netpolicy.hostside;
 
 import org.junit.After;
 import org.junit.Before;
diff --git a/tests/cts/hostside-network-policy/app2/Android.bp b/tests/cts/hostside-network-policy/app2/Android.bp
new file mode 100644
index 0000000..6ef0b06
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app2/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    default_team: "trendy_team_framework_backstage_power",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_test_helper_app {
+    name: "CtsHostsideNetworkPolicyTestsApp2",
+    defaults: ["cts_support_defaults"],
+    platform_apis: true,
+    static_libs: [
+        "androidx.annotation_annotation",
+        "CtsHostsideNetworkPolicyTestsAidl",
+        "modules-utils-build",
+    ],
+    srcs: ["src/**/*.java"],
+    // Tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "general-tests",
+        "sts",
+    ],
+    certificate: ":cts-netpolicy-app",
+}
diff --git a/tests/cts/hostside-network-policy/app2/AndroidManifest.xml b/tests/cts/hostside-network-policy/app2/AndroidManifest.xml
new file mode 100644
index 0000000..668f2da
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app2/AndroidManifest.xml
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2024 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+     package="com.android.cts.netpolicy.hostside.app2">
+
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE"/>
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.PACKAGE_USAGE_STATS" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
+    <!--
+     This application is used to listen to RESTRICT_BACKGROUND_CHANGED intents and store
+     them in a shared preferences which is then read by the test app. These broadcasts are
+     handled by 2 listeners, one defined the manifest and another dynamically registered by
+     a service.
+
+     The manifest-defined listener also handles ordered broadcasts used to share data with the
+     test app.
+
+     This application also provides a service, RemoteSocketFactoryService, that the test app can
+     use to open sockets to remote hosts as a different user ID.
+    -->
+    <application android:usesCleartextTraffic="true"
+            android:testOnly="true"
+            android:debuggable="true">
+
+        <activity android:name=".MyActivity"
+             android:exported="true"/>
+        <service android:name=".MyService"
+             android:exported="true"/>
+        <service android:name=".MyForegroundService"
+             android:foregroundServiceType="specialUse"
+             android:exported="true">
+            <property android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
+                      android:value="Connectivity" />
+        </service>
+        <receiver android:name=".MyBroadcastReceiver"
+             android:exported="true">
+            <intent-filter>
+                <action android:name="android.net.conn.RESTRICT_BACKGROUND_CHANGED"/>
+                <action android:name="com.android.cts.netpolicy.hostside.app2.action.GET_COUNTERS"/>
+                <action android:name="com.android.cts.netpolicy.hostside.app2.action.GET_RESTRICT_BACKGROUND_STATUS"/>
+                <action android:name="com.android.cts.netpolicy.hostside.app2.action.CHECK_NETWORK"/>
+                <action android:name="com.android.cts.netpolicy.hostside.app2.action.SEND_NOTIFICATION"/>
+                <action android:name="com.android.cts.netpolicy.hostside.app2.action.SHOW_TOAST"/>
+                </intent-filter>
+        </receiver>
+        <service android:name=".MyJobService"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+    </application>
+
+    <!--
+      Adding this to make sure that receiving the broadcast is not restricted by
+      package visibility restrictions.
+    -->
+    <queries>
+        <package android:name="android" />
+    </queries>
+
+</manifest>
diff --git a/tests/cts/hostside/app2/res/drawable/ic_notification.png b/tests/cts/hostside-network-policy/app2/res/drawable/ic_notification.png
similarity index 100%
rename from tests/cts/hostside/app2/res/drawable/ic_notification.png
rename to tests/cts/hostside-network-policy/app2/res/drawable/ic_notification.png
Binary files differ
diff --git a/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/Common.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/Common.java
new file mode 100644
index 0000000..1719f9b
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/Common.java
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.cts.netpolicy.hostside.app2;
+
+import static com.android.cts.netpolicy.hostside.INetworkStateObserver.RESULT_ERROR_OTHER;
+import static com.android.cts.netpolicy.hostside.INetworkStateObserver.RESULT_ERROR_UNEXPECTED_CAPABILITIES;
+import static com.android.cts.netpolicy.hostside.INetworkStateObserver.RESULT_ERROR_UNEXPECTED_PROC_STATE;
+
+import android.app.ActivityManager;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.Process;
+import android.os.RemoteException;
+import android.util.Log;
+
+import com.android.cts.netpolicy.hostside.INetworkStateObserver;
+import com.android.cts.netpolicy.hostside.NetworkCheckResult;
+
+import java.net.HttpURLConnection;
+import java.net.InetAddress;
+import java.net.URL;
+import java.util.concurrent.TimeUnit;
+
+public final class Common {
+
+    static final String TAG = "CtsNetApp2";
+
+    // Constants below must match values defined on app's
+    // AbstractRestrictBackgroundNetworkTestCase.java
+    static final String MANIFEST_RECEIVER = "ManifestReceiver";
+    static final String DYNAMIC_RECEIVER = "DynamicReceiver";
+
+    static final String ACTION_RECEIVER_READY =
+            "com.android.cts.netpolicy.hostside.app2.action.RECEIVER_READY";
+    static final String ACTION_FINISH_ACTIVITY =
+            "com.android.cts.netpolicy.hostside.app2.action.FINISH_ACTIVITY";
+    static final String ACTION_FINISH_JOB =
+            "com.android.cts.netpolicy.hostside.app2.action.FINISH_JOB";
+    static final String ACTION_SHOW_TOAST =
+            "com.android.cts.netpolicy.hostside.app2.action.SHOW_TOAST";
+    // Copied from com.android.server.net.NetworkPolicyManagerService class
+    static final String ACTION_SNOOZE_WARNING =
+            "com.android.server.net.action.SNOOZE_WARNING";
+
+    private static final String DEFAULT_TEST_URL =
+            "https://connectivitycheck.android.com/generate_204";
+
+    static final String NOTIFICATION_TYPE_CONTENT = "CONTENT";
+    static final String NOTIFICATION_TYPE_DELETE = "DELETE";
+    static final String NOTIFICATION_TYPE_FULL_SCREEN = "FULL_SCREEN";
+    static final String NOTIFICATION_TYPE_BUNDLE = "BUNDLE";
+    static final String NOTIFICATION_TYPE_ACTION = "ACTION";
+    static final String NOTIFICATION_TYPE_ACTION_BUNDLE = "ACTION_BUNDLE";
+    static final String NOTIFICATION_TYPE_ACTION_REMOTE_INPUT = "ACTION_REMOTE_INPUT";
+
+    static final String TEST_PKG = "com.android.cts.netpolicy.hostside";
+    static final String KEY_NETWORK_STATE_OBSERVER = TEST_PKG + ".observer";
+    static final String KEY_SKIP_VALIDATION_CHECKS = TEST_PKG + ".skip_validation_checks";
+    static final String KEY_CUSTOM_URL =  TEST_PKG + ".custom_url";
+
+    static final int TYPE_COMPONENT_ACTIVTY = 0;
+    static final int TYPE_COMPONENT_FOREGROUND_SERVICE = 1;
+    static final int TYPE_COMPONENT_EXPEDITED_JOB = 2;
+    private static final int NETWORK_TIMEOUT_MS = (int) TimeUnit.SECONDS.toMillis(10);
+
+    static int getUid(Context context) {
+        final String packageName = context.getPackageName();
+        try {
+            return context.getPackageManager().getPackageUid(packageName, 0);
+        } catch (NameNotFoundException e) {
+            throw new IllegalStateException("Could not get UID for " + packageName, e);
+        }
+    }
+
+    private static NetworkCheckResult createNetworkCheckResult(boolean connected, String details,
+            NetworkInfo networkInfo) {
+        final NetworkCheckResult checkResult = new NetworkCheckResult();
+        checkResult.connected = connected;
+        checkResult.details = details;
+        checkResult.networkInfo = networkInfo;
+        return checkResult;
+    }
+
+    private static boolean validateComponentState(Context context, int componentType,
+            INetworkStateObserver observer) throws RemoteException {
+        final ActivityManager activityManager = context.getSystemService(ActivityManager.class);
+        switch (componentType) {
+            case TYPE_COMPONENT_ACTIVTY: {
+                final int procState = activityManager.getUidProcessState(Process.myUid());
+                if (procState != ActivityManager.PROCESS_STATE_TOP) {
+                    observer.onNetworkStateChecked(RESULT_ERROR_UNEXPECTED_PROC_STATE,
+                            createNetworkCheckResult(false, "Unexpected procstate: " + procState,
+                                    null));
+                    return false;
+                }
+                return true;
+            }
+            case TYPE_COMPONENT_FOREGROUND_SERVICE: {
+                final int procState = activityManager.getUidProcessState(Process.myUid());
+                if (procState != ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE) {
+                    observer.onNetworkStateChecked(RESULT_ERROR_UNEXPECTED_PROC_STATE,
+                            createNetworkCheckResult(false, "Unexpected procstate: " + procState,
+                                    null));
+                    return false;
+                }
+                return true;
+            }
+            case TYPE_COMPONENT_EXPEDITED_JOB: {
+                final int capabilities = activityManager.getUidProcessCapabilities(Process.myUid());
+                if ((capabilities
+                        & ActivityManager.PROCESS_CAPABILITY_POWER_RESTRICTED_NETWORK) == 0) {
+                    observer.onNetworkStateChecked(RESULT_ERROR_UNEXPECTED_CAPABILITIES,
+                            createNetworkCheckResult(false,
+                                    "Unexpected capabilities: " + capabilities, null));
+                    return false;
+                }
+                return true;
+            }
+            default: {
+                observer.onNetworkStateChecked(RESULT_ERROR_OTHER,
+                        createNetworkCheckResult(false, "Unknown component type: " + componentType,
+                                null));
+                return false;
+            }
+        }
+    }
+
+    static void notifyNetworkStateObserver(Context context, Intent intent, int componentType) {
+        if (intent == null) {
+            return;
+        }
+        final Bundle extras = intent.getExtras();
+        notifyNetworkStateObserver(context, extras, componentType);
+    }
+
+    static void notifyNetworkStateObserver(Context context, Bundle extras, int componentType) {
+        if (extras == null) {
+            return;
+        }
+        final INetworkStateObserver observer = INetworkStateObserver.Stub.asInterface(
+                extras.getBinder(KEY_NETWORK_STATE_OBSERVER));
+        if (observer != null) {
+            final String customUrl = extras.getString(KEY_CUSTOM_URL);
+            try {
+                final boolean skipValidation = extras.getBoolean(KEY_SKIP_VALIDATION_CHECKS);
+                if (!skipValidation && !validateComponentState(context, componentType, observer)) {
+                    return;
+                }
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error occurred while informing the validation result: " + e);
+            }
+            AsyncTask.execute(() -> {
+                try {
+                    observer.onNetworkStateChecked(
+                            INetworkStateObserver.RESULT_SUCCESS_NETWORK_STATE_CHECKED,
+                            checkNetworkStatus(context, customUrl));
+                } catch (RemoteException e) {
+                    Log.e(TAG, "Error occurred while notifying the observer: " + e);
+                }
+            });
+        }
+    }
+
+    /**
+     * Checks whether the network is available by attempting a connection to the given address
+     * and returns a {@link NetworkCheckResult} object containing all the relevant details for
+     * debugging. Uses a default address if the given address is {@code null}.
+     *
+     * <p>
+     * The returned object has the following fields:
+     *
+     * <ul>
+     * <li>{@code connected}: whether or not the connection was successful.
+     * <li>{@code networkInfo}: the {@link NetworkInfo} describing the current active network as
+     * visible to this app.
+     * <li>{@code details}: A human readable string giving useful information about the success or
+     * failure.
+     * </ul>
+     */
+    static NetworkCheckResult checkNetworkStatus(Context context, String customUrl) {
+        final String address = (customUrl == null) ? DEFAULT_TEST_URL : customUrl;
+
+        // The current Android DNS resolver returns an UnknownHostException whenever network access
+        // is blocked. This can get cached in the current process-local InetAddress cache. Clearing
+        // the cache before attempting a connection ensures we never report a failure due to a
+        // negative cache entry.
+        InetAddress.clearDnsCache();
+
+        final ConnectivityManager cm = context.getSystemService(ConnectivityManager.class);
+
+        final NetworkInfo networkInfo = cm.getActiveNetworkInfo();
+        Log.d(TAG, "Running checkNetworkStatus() on thread "
+                + Thread.currentThread().getName() + " for UID " + getUid(context)
+                + "\n\tactiveNetworkInfo: " + networkInfo + "\n\tURL: " + address);
+        boolean checkStatus = false;
+        String checkDetails = "N/A";
+        try {
+            final URL url = new URL(address);
+            final HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setReadTimeout(NETWORK_TIMEOUT_MS);
+            conn.setConnectTimeout(NETWORK_TIMEOUT_MS / 2);
+            conn.setRequestMethod("GET");
+            conn.connect();
+            final int response = conn.getResponseCode();
+            checkStatus = true;
+            checkDetails = "HTTP response for " + address + ": " + response;
+        } catch (Exception e) {
+            checkStatus = false;
+            checkDetails = "Exception getting " + address + ": " + e;
+        }
+        final NetworkCheckResult result = createNetworkCheckResult(checkStatus, checkDetails,
+                networkInfo);
+        Log.d(TAG, "Offering: " + result);
+        return result;
+    }
+}
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyActivity.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyActivity.java
similarity index 90%
rename from tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyActivity.java
rename to tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyActivity.java
index aa58ff9..d274c50 100644
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyActivity.java
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyActivity.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside.app2;
+package com.android.cts.netpolicy.hostside.app2;
 
-import static com.android.cts.net.hostside.app2.Common.ACTION_FINISH_ACTIVITY;
-import static com.android.cts.net.hostside.app2.Common.TAG;
-import static com.android.cts.net.hostside.app2.Common.TYPE_COMPONENT_ACTIVTY;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_FINISH_ACTIVITY;
+import static com.android.cts.netpolicy.hostside.app2.Common.TAG;
+import static com.android.cts.netpolicy.hostside.app2.Common.TYPE_COMPONENT_ACTIVTY;
 
 import android.app.Activity;
 import android.content.BroadcastReceiver;
diff --git a/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyBroadcastReceiver.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyBroadcastReceiver.java
new file mode 100644
index 0000000..27aec8c
--- /dev/null
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyBroadcastReceiver.java
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.netpolicy.hostside.app2;
+
+import static android.net.ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED;
+
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_RECEIVER_READY;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_SHOW_TOAST;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_SNOOZE_WARNING;
+import static com.android.cts.netpolicy.hostside.app2.Common.MANIFEST_RECEIVER;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_ACTION;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_ACTION_BUNDLE;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_ACTION_REMOTE_INPUT;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_BUNDLE;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_CONTENT;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_DELETE;
+import static com.android.cts.netpolicy.hostside.app2.Common.NOTIFICATION_TYPE_FULL_SCREEN;
+import static com.android.cts.netpolicy.hostside.app2.Common.TAG;
+
+import android.app.Notification;
+import android.app.Notification.Action;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.RemoteInput;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.net.ConnectivityManager;
+import android.os.Bundle;
+import android.util.Log;
+import android.widget.Toast;
+
+/**
+ * Receiver used to:
+ * <ol>
+ *   <li>Count number of {@code RESTRICT_BACKGROUND_CHANGED} broadcasts received.
+ *   <li>Show a toast.
+ * </ol>
+ */
+public class MyBroadcastReceiver extends BroadcastReceiver {
+
+    private final String mName;
+
+    public MyBroadcastReceiver() {
+        this(MANIFEST_RECEIVER);
+    }
+
+    MyBroadcastReceiver(String name) {
+        Log.d(TAG, "Constructing MyBroadcastReceiver named " + name);
+        mName = name;
+    }
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        Log.d(TAG, "onReceive() for " + mName + ": " + intent);
+        final String action = intent.getAction();
+        switch (action) {
+            case ACTION_SNOOZE_WARNING:
+                increaseCounter(context, action);
+                break;
+            case ACTION_RESTRICT_BACKGROUND_CHANGED:
+                increaseCounter(context, action);
+                break;
+            case ACTION_RECEIVER_READY:
+                final String message = mName + " is ready to rumble";
+                Log.d(TAG, message);
+                setResultData(message);
+                break;
+            case ACTION_SHOW_TOAST:
+                showToast(context);
+                break;
+            default:
+                Log.e(TAG, "received unexpected action: " + action);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "[MyBroadcastReceiver: mName=" + mName + "]";
+    }
+
+    private void increaseCounter(Context context, String action) {
+        final SharedPreferences prefs = context.getApplicationContext()
+                .getSharedPreferences(mName, Context.MODE_PRIVATE);
+        final int value = prefs.getInt(action, 0) + 1;
+        Log.d(TAG, "increaseCounter('" + action + "'): setting '" + mName + "' to " + value);
+        prefs.edit().putInt(action, value).apply();
+    }
+
+    static int getCounter(Context context, String action, String receiverName) {
+        final SharedPreferences prefs = context.getSharedPreferences(receiverName,
+                Context.MODE_PRIVATE);
+        final int value = prefs.getInt(action, 0);
+        Log.d(TAG, "getCounter('" + action + "', '" + receiverName + "'): " + value);
+        return value;
+    }
+
+    static String getRestrictBackgroundStatus(Context context) {
+        final ConnectivityManager cm = (ConnectivityManager) context
+                .getSystemService(Context.CONNECTIVITY_SERVICE);
+        final int apiStatus = cm.getRestrictBackgroundStatus();
+        Log.d(TAG, "getRestrictBackgroundStatus: returning " + apiStatus);
+        return String.valueOf(apiStatus);
+    }
+
+    /**
+     * Sends a system notification containing actions with pending intents to launch the app's
+     * main activitiy or service.
+     */
+    static void sendNotification(Context context, String channelId, int notificationId,
+            String notificationType ) {
+        Log.d(TAG, "sendNotification: id=" + notificationId + ", type=" + notificationType);
+        final Intent serviceIntent = new Intent(context, MyService.class);
+        final PendingIntent pendingIntent = PendingIntent.getService(context, 0, serviceIntent,
+                PendingIntent.FLAG_MUTABLE);
+        final Bundle bundle = new Bundle();
+        bundle.putCharSequence("parcelable", "I am not");
+
+        final Notification.Builder builder = new Notification.Builder(context, channelId)
+                .setSmallIcon(R.drawable.ic_notification);
+
+        Action action = null;
+        switch (notificationType) {
+            case NOTIFICATION_TYPE_CONTENT:
+                builder
+                    .setContentTitle("Light, Cameras...")
+                    .setContentIntent(pendingIntent);
+                break;
+            case NOTIFICATION_TYPE_DELETE:
+                builder.setDeleteIntent(pendingIntent);
+                break;
+            case NOTIFICATION_TYPE_FULL_SCREEN:
+                builder.setFullScreenIntent(pendingIntent, true);
+                break;
+            case NOTIFICATION_TYPE_BUNDLE:
+                bundle.putParcelable("Magnum P.I. (Pending Intent)", pendingIntent);
+                builder.setExtras(bundle);
+                break;
+            case NOTIFICATION_TYPE_ACTION:
+                action = new Action.Builder(
+                        R.drawable.ic_notification, "ACTION", pendingIntent)
+                        .build();
+                builder.addAction(action);
+                break;
+            case NOTIFICATION_TYPE_ACTION_BUNDLE:
+                bundle.putParcelable("Magnum A.P.I. (Action Pending Intent)", pendingIntent);
+                action = new Action.Builder(
+                        R.drawable.ic_notification, "ACTION WITH BUNDLE", null)
+                        .addExtras(bundle)
+                        .build();
+                builder.addAction(action);
+                break;
+            case NOTIFICATION_TYPE_ACTION_REMOTE_INPUT:
+                bundle.putParcelable("Magnum R.I. (Remote Input)", null);
+                final RemoteInput remoteInput = new RemoteInput.Builder("RI")
+                    .addExtras(bundle)
+                    .build();
+                action = new Action.Builder(
+                        R.drawable.ic_notification, "ACTION WITH REMOTE INPUT", pendingIntent)
+                        .addRemoteInput(remoteInput)
+                        .build();
+                builder.addAction(action);
+                break;
+            default:
+                Log.e(TAG, "Unknown notification type: " + notificationType);
+                return;
+        }
+
+        final Notification notification = builder.build();
+        ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE))
+            .notify(notificationId, notification);
+    }
+
+    private void showToast(Context context) {
+        Toast.makeText(context, "Toast from CTS test", Toast.LENGTH_SHORT).show();
+        setResultData("Shown");
+    }
+}
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyForegroundService.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyForegroundService.java
similarity index 87%
rename from tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyForegroundService.java
rename to tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyForegroundService.java
index b55761c..54cee3c 100644
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyForegroundService.java
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyForegroundService.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside.app2;
+package com.android.cts.netpolicy.hostside.app2;
 
-import static com.android.cts.net.hostside.app2.Common.TAG;
-import static com.android.cts.net.hostside.app2.Common.TEST_PKG;
-import static com.android.cts.net.hostside.app2.Common.TYPE_COMPONENT_FOREGROUND_SERVICE;
+import static com.android.cts.netpolicy.hostside.app2.Common.TAG;
+import static com.android.cts.netpolicy.hostside.app2.Common.TEST_PKG;
+import static com.android.cts.netpolicy.hostside.app2.Common.TYPE_COMPONENT_FOREGROUND_SERVICE;
 
 import android.R;
 import android.app.Notification;
@@ -31,7 +31,7 @@
 import android.os.RemoteException;
 import android.util.Log;
 
-import com.android.cts.net.hostside.INetworkStateObserver;
+import com.android.cts.netpolicy.hostside.INetworkStateObserver;
 
 /**
  * Service used to change app state to FOREGROUND_SERVICE.
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyJobService.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyJobService.java
similarity index 90%
rename from tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyJobService.java
rename to tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyJobService.java
index 8c112b6..eba55ed 100644
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyJobService.java
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyJobService.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside.app2;
+package com.android.cts.netpolicy.hostside.app2;
 
-import static com.android.cts.net.hostside.app2.Common.ACTION_FINISH_JOB;
-import static com.android.cts.net.hostside.app2.Common.TAG;
-import static com.android.cts.net.hostside.app2.Common.TYPE_COMPONENT_EXPEDITED_JOB;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_FINISH_JOB;
+import static com.android.cts.netpolicy.hostside.app2.Common.TAG;
+import static com.android.cts.netpolicy.hostside.app2.Common.TYPE_COMPONENT_EXPEDITED_JOB;
 
 import android.app.job.JobParameters;
 import android.app.job.JobService;
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyService.java b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyService.java
similarity index 88%
rename from tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyService.java
rename to tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyService.java
index 3ed5391..71bcead 100644
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyService.java
+++ b/tests/cts/hostside-network-policy/app2/src/com/android/cts/netpolicy/hostside/app2/MyService.java
@@ -13,15 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net.hostside.app2;
+package com.android.cts.netpolicy.hostside.app2;
 
 import static android.net.ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED;
 
-import static com.android.cts.net.hostside.app2.Common.ACTION_RECEIVER_READY;
-import static com.android.cts.net.hostside.app2.Common.ACTION_SNOOZE_WARNING;
-import static com.android.cts.net.hostside.app2.Common.DYNAMIC_RECEIVER;
-import static com.android.cts.net.hostside.app2.Common.TAG;
-import static com.android.networkstack.apishim.ConstantsShim.RECEIVER_EXPORTED;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_RECEIVER_READY;
+import static com.android.cts.netpolicy.hostside.app2.Common.ACTION_SNOOZE_WARNING;
+import static com.android.cts.netpolicy.hostside.app2.Common.DYNAMIC_RECEIVER;
+import static com.android.cts.netpolicy.hostside.app2.Common.TAG;
 
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
@@ -39,8 +38,9 @@
 import android.os.RemoteException;
 import android.util.Log;
 
-import com.android.cts.net.hostside.IMyService;
-import com.android.cts.net.hostside.INetworkCallback;
+import com.android.cts.netpolicy.hostside.IMyService;
+import com.android.cts.netpolicy.hostside.INetworkCallback;
+import com.android.cts.netpolicy.hostside.NetworkCheckResult;
 import com.android.modules.utils.build.SdkLevel;
 
 /**
@@ -56,9 +56,7 @@
 
     // TODO: move MyBroadcast static functions here - they were kept there to make git diff easier.
 
-    private IMyService.Stub mBinder =
-        new IMyService.Stub() {
-
+    private IMyService.Stub mBinder = new IMyService.Stub() {
         @Override
         public void registerBroadcastReceiver() {
             if (mReceiver != null) {
@@ -83,8 +81,8 @@
         }
 
         @Override
-        public String checkNetworkStatus() {
-            return MyBroadcastReceiver.checkNetworkStatus(getApplicationContext());
+        public NetworkCheckResult checkNetworkStatus(String customUrl) {
+            return Common.checkNetworkStatus(getApplicationContext(), customUrl);
         }
 
         @Override
@@ -94,7 +92,7 @@
 
         @Override
         public void sendNotification(int notificationId, String notificationType) {
-            MyBroadcastReceiver .sendNotification(getApplicationContext(), NOTIFICATION_CHANNEL_ID,
+            MyBroadcastReceiver.sendNotification(getApplicationContext(), NOTIFICATION_CHANNEL_ID,
                     notificationId, notificationType);
         }
 
@@ -170,7 +168,7 @@
                     .getSystemService(JobScheduler.class);
             return jobScheduler.schedule(jobInfo);
         }
-      };
+    };
 
     @Override
     public IBinder onBind(Intent intent) {
diff --git a/tests/cts/hostside-network-policy/certs/Android.bp b/tests/cts/hostside-network-policy/certs/Android.bp
new file mode 100644
index 0000000..bfbc341
--- /dev/null
+++ b/tests/cts/hostside-network-policy/certs/Android.bp
@@ -0,0 +1,9 @@
+package {
+    default_team: "trendy_team_framework_backstage_power",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_app_certificate {
+    name: "cts-netpolicy-app",
+    certificate: "cts-net-app",
+}
diff --git a/tests/cts/hostside/certs/README b/tests/cts/hostside-network-policy/certs/README
similarity index 100%
rename from tests/cts/hostside/certs/README
rename to tests/cts/hostside-network-policy/certs/README
diff --git a/tests/cts/hostside/certs/cts-net-app.pk8 b/tests/cts/hostside-network-policy/certs/cts-net-app.pk8
similarity index 100%
rename from tests/cts/hostside/certs/cts-net-app.pk8
rename to tests/cts/hostside-network-policy/certs/cts-net-app.pk8
Binary files differ
diff --git a/tests/cts/hostside/certs/cts-net-app.x509.pem b/tests/cts/hostside-network-policy/certs/cts-net-app.x509.pem
similarity index 100%
rename from tests/cts/hostside/certs/cts-net-app.x509.pem
rename to tests/cts/hostside-network-policy/certs/cts-net-app.x509.pem
diff --git a/tests/cts/hostside/instrumentation_arguments/Android.bp b/tests/cts/hostside-network-policy/instrumentation_arguments/Android.bp
similarity index 100%
rename from tests/cts/hostside/instrumentation_arguments/Android.bp
rename to tests/cts/hostside-network-policy/instrumentation_arguments/Android.bp
diff --git a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java b/tests/cts/hostside-network-policy/instrumentation_arguments/src/com/android/cts/netpolicy/arguments/InstrumentationArguments.java
similarity index 85%
rename from tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
rename to tests/cts/hostside-network-policy/instrumentation_arguments/src/com/android/cts/netpolicy/arguments/InstrumentationArguments.java
index 472e347..0fe98e9 100644
--- a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
+++ b/tests/cts/hostside-network-policy/instrumentation_arguments/src/com/android/cts/netpolicy/arguments/InstrumentationArguments.java
@@ -14,8 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.arguments;
+package com.android.cts.netpolicy.arguments;
 
 public interface InstrumentationArguments {
     String ARG_WAIVE_BIND_PRIORITY = "waive_bind_priority";
+    String ARG_CONNECTION_CHECK_CUSTOM_URL = "connection_check_custom_url";
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideConnOnActivityStartTest.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideConnOnActivityStartTest.java
similarity index 76%
rename from tests/cts/hostside/src/com/android/cts/net/HostsideConnOnActivityStartTest.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideConnOnActivityStartTest.java
index 880e826..422231d 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideConnOnActivityStartTest.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideConnOnActivityStartTest.java
@@ -14,13 +14,12 @@
  * limitations under the License.
  */
 
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
-import static com.android.cts.net.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
 
 import android.platform.test.annotations.FlakyTest;
 
-import com.android.testutils.SkipPresubmit;
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.invoker.TestInformation;
 import com.android.tradefed.testtype.junit4.AfterClassWithInfo;
@@ -30,8 +29,8 @@
 
 import java.util.Map;
 
-@SkipPresubmit(reason = "Out of SLO flakiness")
-public class HostsideConnOnActivityStartTest extends HostsideNetworkTestCase {
+@FlakyTest(bugId = 288324467)
+public class HostsideConnOnActivityStartTest extends HostsideNetworkPolicyTestCase {
     private static final String TEST_CLASS = TEST_PKG + ".ConnOnActivityStartTest";
 
     @BeforeClassWithInfo
@@ -47,29 +46,29 @@
 
     @Test
     public void testStartActivity_batterySaver() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_CLASS, "testStartActivity_batterySaver");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_CLASS, "testStartActivity_batterySaver");
     }
 
     @Test
     public void testStartActivity_dataSaver() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_CLASS, "testStartActivity_dataSaver");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_CLASS, "testStartActivity_dataSaver");
     }
 
     @FlakyTest(bugId = 231440256)
     @Test
     public void testStartActivity_doze() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_CLASS, "testStartActivity_doze");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_CLASS, "testStartActivity_doze");
     }
 
     @Test
     public void testStartActivity_appStandby() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_CLASS, "testStartActivity_appStandby");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_CLASS, "testStartActivity_appStandby");
     }
 
     // TODO(b/321848487): Annotate with @RequiresFlagsEnabled to mirror the device-side test.
     @Test
     public void testStartActivity_default() throws Exception {
-        runDeviceTestsWithArgs(TEST_PKG, TEST_CLASS, "testStartActivity_default",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_CLASS, "testStartActivity_default",
                 Map.of(ARG_WAIVE_BIND_PRIORITY, "true"));
     }
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideDefaultNetworkRestrictionsTests.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideDefaultNetworkRestrictionsTests.java
similarity index 88%
rename from tests/cts/hostside/src/com/android/cts/net/HostsideDefaultNetworkRestrictionsTests.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideDefaultNetworkRestrictionsTests.java
index 0d01fc1..62952bb 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideDefaultNetworkRestrictionsTests.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideDefaultNetworkRestrictionsTests.java
@@ -14,11 +14,12 @@
  * limitations under the License.
  */
 
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
-import static com.android.cts.net.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
 
-import com.android.testutils.SkipPresubmit;
+import android.platform.test.annotations.FlakyTest;
+
 import com.android.tradefed.device.DeviceNotAvailableException;
 
 import org.junit.After;
@@ -28,8 +29,8 @@
 import java.util.Map;
 
 // TODO(b/321848487): Annotate with @RequiresFlagsEnabled to mirror the device-side tests.
-@SkipPresubmit(reason = "Monitoring for flakiness")
-public class HostsideDefaultNetworkRestrictionsTests extends HostsideNetworkTestCase {
+@FlakyTest(bugId = 288324467)
+public class HostsideDefaultNetworkRestrictionsTests extends HostsideNetworkPolicyTestCase {
     private static final String METERED_TEST_CLASS = TEST_PKG + ".DefaultRestrictionsMeteredTest";
     private static final String NON_METERED_TEST_CLASS =
             TEST_PKG + ".DefaultRestrictionsNonMeteredTest";
@@ -46,12 +47,12 @@
     }
 
     private void runMeteredTest(String methodName) throws DeviceNotAvailableException {
-        runDeviceTestsWithArgs(TEST_PKG, METERED_TEST_CLASS, methodName,
+        runDeviceTestsWithCustomOptions(TEST_PKG, METERED_TEST_CLASS, methodName,
                 Map.of(ARG_WAIVE_BIND_PRIORITY, "true"));
     }
 
     private void runNonMeteredTest(String methodName) throws DeviceNotAvailableException {
-        runDeviceTestsWithArgs(TEST_PKG, NON_METERED_TEST_CLASS, methodName,
+        runDeviceTestsWithCustomOptions(TEST_PKG, NON_METERED_TEST_CLASS, methodName,
                 Map.of(ARG_WAIVE_BIND_PRIORITY, "true"));
     }
 
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkCallbackTests.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkCallbackTests.java
similarity index 79%
rename from tests/cts/hostside/src/com/android/cts/net/HostsideNetworkCallbackTests.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkCallbackTests.java
index 361f7c7..2c2b118 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkCallbackTests.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkCallbackTests.java
@@ -13,11 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
-import static com.android.cts.net.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
 
-import com.android.testutils.SkipPresubmit;
+import android.platform.test.annotations.FlakyTest;
 
 import org.junit.After;
 import org.junit.Before;
@@ -25,8 +25,8 @@
 
 import java.util.Map;
 
-@SkipPresubmit(reason = "Out of SLO flakiness")
-public class HostsideNetworkCallbackTests extends HostsideNetworkTestCase {
+@FlakyTest(bugId = 288324467)
+public class HostsideNetworkCallbackTests extends HostsideNetworkPolicyTestCase {
 
     @Before
     public void setUp() throws Exception {
@@ -41,20 +41,20 @@
 
     @Test
     public void testOnBlockedStatusChanged_dataSaver() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkCallbackTest", "testOnBlockedStatusChanged_dataSaver");
     }
 
     @Test
     public void testOnBlockedStatusChanged_powerSaver() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkCallbackTest", "testOnBlockedStatusChanged_powerSaver");
     }
 
     // TODO(b/321848487): Annotate with @RequiresFlagsEnabled to mirror the device-side test.
     @Test
     public void testOnBlockedStatusChanged_default() throws Exception {
-        runDeviceTestsWithArgs(TEST_PKG, TEST_PKG + ".NetworkCallbackTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".NetworkCallbackTest",
                 "testOnBlockedStatusChanged_default", Map.of(ARG_WAIVE_BIND_PRIORITY, "true"));
     }
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkPolicyManagerTests.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyManagerTests.java
similarity index 82%
rename from tests/cts/hostside/src/com/android/cts/net/HostsideNetworkPolicyManagerTests.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyManagerTests.java
index e97db58..8ffe360 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkPolicyManagerTests.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyManagerTests.java
@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
-import static com.android.cts.net.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_WAIVE_BIND_PRIORITY;
 
 import org.junit.After;
 import org.junit.Before;
@@ -24,7 +24,7 @@
 
 import java.util.Map;
 
-public class HostsideNetworkPolicyManagerTests extends HostsideNetworkTestCase {
+public class HostsideNetworkPolicyManagerTests extends HostsideNetworkPolicyTestCase {
     @Before
     public void setUp() throws Exception {
         uninstallPackage(TEST_APP2_PKG, false);
@@ -38,48 +38,48 @@
 
     @Test
     public void testIsUidNetworkingBlocked_withUidNotBlocked() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest",
                 "testIsUidNetworkingBlocked_withUidNotBlocked");
     }
 
     @Test
     public void testIsUidNetworkingBlocked_withSystemUid() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest", "testIsUidNetworkingBlocked_withSystemUid");
     }
 
     @Test
     public void testIsUidNetworkingBlocked_withDataSaverMode() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest",
                 "testIsUidNetworkingBlocked_withDataSaverMode");
     }
 
     @Test
     public void testIsUidNetworkingBlocked_withRestrictedNetworkingMode() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest",
                 "testIsUidNetworkingBlocked_withRestrictedNetworkingMode");
     }
 
     @Test
     public void testIsUidNetworkingBlocked_withPowerSaverMode() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest",
                 "testIsUidNetworkingBlocked_withPowerSaverMode");
     }
 
     @Test
     public void testIsUidRestrictedOnMeteredNetworks() throws Exception {
-        runDeviceTests(TEST_PKG,
+        runDeviceTestsWithCustomOptions(TEST_PKG,
                 TEST_PKG + ".NetworkPolicyManagerTest", "testIsUidRestrictedOnMeteredNetworks");
     }
 
     // TODO(b/321848487): Annotate with @RequiresFlagsEnabled to mirror the device-side test.
     @Test
     public void testIsUidNetworkingBlocked_whenInBackground() throws Exception {
-        runDeviceTestsWithArgs(TEST_PKG, TEST_PKG + ".NetworkPolicyManagerTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".NetworkPolicyManagerTest",
                 "testIsUidNetworkingBlocked_whenInBackground",
                 Map.of(ARG_WAIVE_BIND_PRIORITY, "true"));
     }
diff --git a/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyTestCase.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyTestCase.java
new file mode 100644
index 0000000..6de6b17
--- /dev/null
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideNetworkPolicyTestCase.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.netpolicy;
+
+import static com.android.cts.netpolicy.arguments.InstrumentationArguments.ARG_CONNECTION_CHECK_CUSTOM_URL;
+
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.fail;
+
+import com.android.ddmlib.Log;
+import com.android.tradefed.config.Option;
+import com.android.tradefed.device.DeviceNotAvailableException;
+import com.android.tradefed.invoker.TestInformation;
+import com.android.tradefed.targetprep.BuildError;
+import com.android.tradefed.targetprep.TargetSetupError;
+import com.android.tradefed.targetprep.suite.SuiteApkInstaller;
+import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
+import com.android.tradefed.testtype.junit4.AfterClassWithInfo;
+import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
+import com.android.tradefed.testtype.junit4.BeforeClassWithInfo;
+import com.android.tradefed.testtype.junit4.DeviceTestRunOptions;
+import com.android.tradefed.util.RunUtil;
+
+import org.junit.runner.RunWith;
+
+import java.util.Map;
+
+@RunWith(DeviceJUnit4ClassRunner.class)
+abstract class HostsideNetworkPolicyTestCase extends BaseHostJUnit4Test {
+    protected static final boolean DEBUG = false;
+    protected static final String TAG = "HostsideNetworkPolicyTests";
+    protected static final String TEST_PKG = "com.android.cts.netpolicy.hostside";
+    protected static final String TEST_APK = "CtsHostsideNetworkPolicyTestsApp.apk";
+    protected static final String TEST_APP2_PKG = "com.android.cts.netpolicy.hostside.app2";
+    protected static final String TEST_APP2_APK = "CtsHostsideNetworkPolicyTestsApp2.apk";
+
+    @Option(name = "custom-url", importance = Option.Importance.IF_UNSET,
+            description = "A custom url to use for testing network connections")
+    protected String mCustomUrl;
+
+    @BeforeClassWithInfo
+    public static void setUpOnceBase(TestInformation testInfo) throws Exception {
+        uninstallPackage(testInfo, TEST_PKG, false);
+        installPackage(testInfo, TEST_APK);
+    }
+
+    @AfterClassWithInfo
+    public static void tearDownOnceBase(TestInformation testInfo)
+            throws DeviceNotAvailableException {
+        uninstallPackage(testInfo, TEST_PKG, true);
+    }
+
+    // Custom static method to install the specified package, this is used to bypass auto-cleanup
+    // per test in BaseHostJUnit4.
+    protected static void installPackage(TestInformation testInfo, String apk)
+            throws DeviceNotAvailableException, TargetSetupError {
+        assertNotNull(testInfo);
+        final int userId = testInfo.getDevice().getCurrentUser();
+        final SuiteApkInstaller installer = new SuiteApkInstaller();
+        // Force the apk clean up
+        installer.setCleanApk(true);
+        installer.addTestFileName(apk);
+        installer.setUserId(userId);
+        installer.setShouldGrantPermission(true);
+        installer.addInstallArg("-t");
+        try {
+            installer.setUp(testInfo);
+        } catch (BuildError e) {
+            throw new TargetSetupError(
+                    e.getMessage(), e, testInfo.getDevice().getDeviceDescriptor(), e.getErrorId());
+        }
+    }
+
+    protected void installPackage(String apk) throws DeviceNotAvailableException, TargetSetupError {
+        installPackage(getTestInformation(), apk);
+    }
+
+    protected static void uninstallPackage(TestInformation testInfo, String packageName,
+            boolean shouldSucceed)
+            throws DeviceNotAvailableException {
+        assertNotNull(testInfo);
+        final String result = testInfo.getDevice().uninstallPackage(packageName);
+        if (shouldSucceed) {
+            assertNull("uninstallPackage(" + packageName + ") failed: " + result, result);
+        }
+    }
+
+    protected void uninstallPackage(String packageName,
+            boolean shouldSucceed)
+            throws DeviceNotAvailableException {
+        uninstallPackage(getTestInformation(), packageName, shouldSucceed);
+    }
+
+    protected void assertPackageUninstalled(String packageName) throws DeviceNotAvailableException {
+        final String command = "cmd package list packages " + packageName;
+        final int max_tries = 5;
+        for (int i = 1; i <= max_tries; i++) {
+            final String result = runCommand(command);
+            if (result.trim().isEmpty()) {
+                return;
+            }
+            // 'list packages' filters by substring, so we need to iterate with the results
+            // and check one by one, otherwise 'com.android.cts.netpolicy.hostside' could return
+            // 'com.android.cts.netpolicy.hostside.app2'
+            boolean found = false;
+            for (String line : result.split("[\\r\\n]+")) {
+                if (line.endsWith(packageName)) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                return;
+            }
+            Log.v(TAG, "Package " + packageName + " not uninstalled yet (" + result
+                    + "); sleeping 1s before polling again");
+            RunUtil.getDefault().sleep(1000);
+        }
+        fail("Package '" + packageName + "' not uinstalled after " + max_tries + " seconds");
+    }
+
+    protected int getUid(String packageName) throws DeviceNotAvailableException {
+        final int currentUser = getDevice().getCurrentUser();
+        final String uidLines = runCommand(
+                "cmd package list packages -U --user " + currentUser + " " + packageName);
+        for (String uidLine : uidLines.split("\n")) {
+            if (uidLine.startsWith("package:" + packageName + " uid:")) {
+                final String[] uidLineParts = uidLine.split(":");
+                // 3rd entry is package uid
+                return Integer.parseInt(uidLineParts[2].trim());
+            }
+        }
+        throw new IllegalStateException("Failed to find the test app on the device; pkg="
+                + packageName + ", u=" + currentUser);
+    }
+
+    protected boolean runDeviceTestsWithCustomOptions(String packageName, String className)
+            throws DeviceNotAvailableException {
+        return runDeviceTestsWithCustomOptions(packageName, className, null);
+    }
+
+    protected boolean runDeviceTestsWithCustomOptions(String packageName, String className,
+            String methodName) throws DeviceNotAvailableException {
+        return runDeviceTestsWithCustomOptions(packageName, className, methodName, null);
+    }
+
+    protected boolean runDeviceTestsWithCustomOptions(String packageName, String className,
+            String methodName, Map<String, String> testArgs) throws DeviceNotAvailableException {
+        final DeviceTestRunOptions deviceTestRunOptions = new DeviceTestRunOptions(packageName)
+                .setTestClassName(className)
+                .setTestMethodName(methodName);
+
+        // Currently there is only one custom option that the test exposes.
+        if (mCustomUrl != null) {
+            deviceTestRunOptions.addInstrumentationArg(ARG_CONNECTION_CHECK_CUSTOM_URL, mCustomUrl);
+        }
+        // Pass over any test specific arguments.
+        if (testArgs != null) {
+            for (Map.Entry<String, String> arg : testArgs.entrySet()) {
+                deviceTestRunOptions.addInstrumentationArg(arg.getKey(), arg.getValue());
+            }
+        }
+        return runDeviceTests(deviceTestRunOptions);
+    }
+
+    protected String runCommand(String command) throws DeviceNotAvailableException {
+        Log.d(TAG, "Command: '" + command + "'");
+        final String output = getDevice().executeShellCommand(command);
+        if (DEBUG) Log.v(TAG, "Output: " + output.trim());
+        return output;
+    }
+}
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideRestrictBackgroundNetworkTests.java
similarity index 76%
rename from tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideRestrictBackgroundNetworkTests.java
index 9c3751d..0261c7d 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/HostsideRestrictBackgroundNetworkTests.java
@@ -14,14 +14,14 @@
  * limitations under the License.
  */
 
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
 import static org.junit.Assert.fail;
 
+import android.platform.test.annotations.FlakyTest;
 import android.platform.test.annotations.SecurityTest;
 
 import com.android.ddmlib.Log;
-import com.android.testutils.SkipPresubmit;
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.util.RunUtil;
 
@@ -29,8 +29,8 @@
 import org.junit.Before;
 import org.junit.Test;
 
-@SkipPresubmit(reason = "Out of SLO flakiness")
-public class HostsideRestrictBackgroundNetworkTests extends HostsideNetworkTestCase {
+@FlakyTest(bugId = 288324467)
+public class HostsideRestrictBackgroundNetworkTests extends HostsideNetworkPolicyTestCase {
 
     @Before
     public void setUp() throws Exception {
@@ -46,7 +46,7 @@
     @SecurityTest
     @Test
     public void testDataWarningReceiver() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataWarningReceiverTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataWarningReceiverTest",
                 "testSnoozeWarningNotReceived");
     }
 
@@ -56,25 +56,25 @@
 
     @Test
     public void testDataSaverMode_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testGetRestrictBackgroundStatus_disabled");
     }
 
     @Test
     public void testDataSaverMode_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testGetRestrictBackgroundStatus_whitelisted");
     }
 
     @Test
     public void testDataSaverMode_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testGetRestrictBackgroundStatus_enabled");
     }
 
     @Test
     public void testDataSaverMode_blacklisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testGetRestrictBackgroundStatus_blacklisted");
     }
 
@@ -97,13 +97,13 @@
 
     @Test
     public void testDataSaverMode_requiredWhitelistedPackages() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testGetRestrictBackgroundStatus_requiredWhitelistedPackages");
     }
 
     @Test
     public void testDataSaverMode_broadcastNotSentOnUnsupportedDevices() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DataSaverModeTest",
                 "testBroadcastNotSentOnUnsupportedDevices");
     }
 
@@ -113,19 +113,19 @@
 
     @Test
     public void testBatterySaverModeMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
     @Test
     public void testBatterySaverModeMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testBatterySaverModeMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
@@ -149,19 +149,19 @@
 
     @Test
     public void testBatterySaverModeNonMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
     @Test
     public void testBatterySaverModeNonMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testBatterySaverModeNonMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".BatterySaverModeNonMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
@@ -171,31 +171,31 @@
 
     @Test
     public void testAppIdleMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
     @Test
     public void testAppIdleMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testAppIdleMetered_tempWhitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testBackgroundNetworkAccess_tempWhitelisted");
     }
 
     @Test
     public void testAppIdleMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
     @Test
     public void testAppIdleMetered_idleWhitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testAppIdleNetworkAccess_idleWhitelisted");
     }
 
@@ -206,51 +206,51 @@
 
     @Test
     public void testAppIdleNonMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
 
     @Test
     public void testAppIdleNonMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testAppIdleNonMetered_tempWhitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testBackgroundNetworkAccess_tempWhitelisted");
     }
 
     @Test
     public void testAppIdleNonMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
     @Test
     public void testAppIdleNonMetered_idleWhitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testAppIdleNetworkAccess_idleWhitelisted");
     }
 
     @Test
     public void testAppIdleNonMetered_whenCharging() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testAppIdleNetworkAccess_whenCharging");
     }
 
     @Test
     public void testAppIdleMetered_whenCharging() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleMeteredTest",
                 "testAppIdleNetworkAccess_whenCharging");
     }
 
     @Test
     public void testAppIdle_toast() throws Exception {
         // Check that showing a toast doesn't bring an app out of standby
-        runDeviceTests(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".AppIdleNonMeteredTest",
                 "testAppIdle_toast");
     }
 
@@ -260,25 +260,25 @@
 
     @Test
     public void testDozeModeMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
     @Test
     public void testDozeModeMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testDozeModeMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
     @Test
     public void testDozeModeMetered_enabledButWhitelistedOnNotificationAction() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeMeteredTest",
                 "testBackgroundNetworkAccess_enabledButWhitelistedOnNotificationAction");
     }
 
@@ -289,26 +289,26 @@
 
     @Test
     public void testDozeModeNonMetered_disabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
                 "testBackgroundNetworkAccess_disabled");
     }
 
     @Test
     public void testDozeModeNonMetered_whitelisted() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
                 "testBackgroundNetworkAccess_whitelisted");
     }
 
     @Test
     public void testDozeModeNonMetered_enabled() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
                 "testBackgroundNetworkAccess_enabled");
     }
 
     @Test
     public void testDozeModeNonMetered_enabledButWhitelistedOnNotificationAction()
             throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".DozeModeNonMeteredTest",
                 "testBackgroundNetworkAccess_enabledButWhitelistedOnNotificationAction");
     }
 
@@ -318,55 +318,55 @@
 
     @Test
     public void testDataAndBatterySaverModes_meteredNetwork() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testDataAndBatterySaverModes_meteredNetwork");
     }
 
     @Test
     public void testDataAndBatterySaverModes_nonMeteredNetwork() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testDataAndBatterySaverModes_nonMeteredNetwork");
     }
 
     @Test
     public void testDozeAndBatterySaverMode_powerSaveWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testDozeAndBatterySaverMode_powerSaveWhitelists");
     }
 
     @Test
     public void testDozeAndAppIdle_powerSaveWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testDozeAndAppIdle_powerSaveWhitelists");
     }
 
     @Test
     public void testAppIdleAndDoze_tempPowerSaveWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testAppIdleAndDoze_tempPowerSaveWhitelists");
     }
 
     @Test
     public void testAppIdleAndBatterySaver_tempPowerSaveWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testAppIdleAndBatterySaver_tempPowerSaveWhitelists");
     }
 
     @Test
     public void testDozeAndAppIdle_appIdleWhitelist() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testDozeAndAppIdle_appIdleWhitelist");
     }
 
     @Test
     public void testAppIdleAndDoze_tempPowerSaveAndAppIdleWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testAppIdleAndDoze_tempPowerSaveAndAppIdleWhitelists");
     }
 
     @Test
     public void testAppIdleAndBatterySaver_tempPowerSaveAndAppIdleWhitelists() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".MixedModesTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".MixedModesTest",
                 "testAppIdleAndBatterySaver_tempPowerSaveAndAppIdleWhitelists");
     }
 
@@ -376,13 +376,13 @@
 
     @Test
     public void testNetworkAccess_restrictedMode() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".RestrictedModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".RestrictedModeTest",
                 "testNetworkAccess");
     }
 
     @Test
     public void testNetworkAccess_restrictedMode_withBatterySaver() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".RestrictedModeTest",
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".RestrictedModeTest",
                 "testNetworkAccess_withBatterySaver");
     }
 
@@ -392,12 +392,12 @@
 
     @Test
     public void testMeteredNetworkAccess_expeditedJob() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".ExpeditedJobMeteredTest");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".ExpeditedJobMeteredTest");
     }
 
     @Test
     public void testNonMeteredNetworkAccess_expeditedJob() throws Exception {
-        runDeviceTests(TEST_PKG, TEST_PKG + ".ExpeditedJobNonMeteredTest");
+        runDeviceTestsWithCustomOptions(TEST_PKG, TEST_PKG + ".ExpeditedJobNonMeteredTest");
     }
 
     /*******************
diff --git a/tests/cts/hostside/src/com/android/cts/net/NetworkPolicyTestsPreparer.java b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/NetworkPolicyTestsPreparer.java
similarity index 98%
rename from tests/cts/hostside/src/com/android/cts/net/NetworkPolicyTestsPreparer.java
rename to tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/NetworkPolicyTestsPreparer.java
index 23aca24..cbf2f4d 100644
--- a/tests/cts/hostside/src/com/android/cts/net/NetworkPolicyTestsPreparer.java
+++ b/tests/cts/hostside-network-policy/src/com/android/cts/netpolicy/NetworkPolicyTestsPreparer.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.android.cts.net;
+package com.android.cts.netpolicy;
 
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.device.ITestDevice;
diff --git a/tests/cts/hostside/Android.bp b/tests/cts/hostside/Android.bp
index f6c0430..14d5d54 100644
--- a/tests/cts/hostside/Android.bp
+++ b/tests/cts/hostside/Android.bp
@@ -29,7 +29,6 @@
     // Only compile source java files in this apk.
     srcs: [
         "src/**/*.java",
-        ":ArgumentConstants",
     ],
     libs: [
         "net-tests-utils-host-device-common",
diff --git a/tests/cts/hostside/AndroidTest.xml b/tests/cts/hostside/AndroidTest.xml
index 0ffe81e..ea6b078 100644
--- a/tests/cts/hostside/AndroidTest.xml
+++ b/tests/cts/hostside/AndroidTest.xml
@@ -22,7 +22,6 @@
     <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
 
     <target_preparer class="com.android.compatibility.common.tradefed.targetprep.LocationCheck" />
-    <target_preparer class="com.android.cts.net.NetworkPolicyTestsPreparer" />
 
     <!-- Enabling change id ALLOW_TEST_API_ACCESS allows that package to access @TestApi methods -->
     <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
@@ -30,7 +29,6 @@
         <option name="teardown-command" value="am compat reset ALLOW_TEST_API_ACCESS com.android.cts.net.hostside.app2" />
         <option name="teardown-command" value="cmd power set-mode 0" />
         <option name="teardown-command" value="cmd battery reset" />
-        <option name="teardown-command" value="cmd netpolicy stop-watching" />
     </target_preparer>
 
     <target_preparer class="com.android.tradefed.targetprep.DeviceSetup">
diff --git a/tests/cts/hostside/OWNERS b/tests/cts/hostside/OWNERS
deleted file mode 100644
index 20bc55e..0000000
--- a/tests/cts/hostside/OWNERS
+++ /dev/null
@@ -1,4 +0,0 @@
-# Bug component: 61373
-# Inherits parent owners
-sudheersai@google.com
-jchalard@google.com
diff --git a/tests/cts/hostside/aidl/Android.bp b/tests/cts/hostside/aidl/Android.bp
index 18a5897..33761dc 100644
--- a/tests/cts/hostside/aidl/Android.bp
+++ b/tests/cts/hostside/aidl/Android.bp
@@ -21,9 +21,7 @@
     name: "CtsHostsideNetworkTestsAidl",
     sdk_version: "current",
     srcs: [
-        "com/android/cts/net/hostside/IMyService.aidl",
-        "com/android/cts/net/hostside/INetworkCallback.aidl",
-        "com/android/cts/net/hostside/INetworkStateObserver.aidl",
-        "com/android/cts/net/hostside/IRemoteSocketFactory.aidl",
+        "com/android/cts/net/hostside/*.aidl",
+        "com/android/cts/net/hostside/*.java",
     ],
 }
diff --git a/tests/cts/hostside/app/Android.bp b/tests/cts/hostside/app/Android.bp
index cf4afa9..919e025 100644
--- a/tests/cts/hostside/app/Android.bp
+++ b/tests/cts/hostside/app/Android.bp
@@ -38,7 +38,6 @@
     ],
     srcs: [
         "src/**/*.java",
-         ":ArgumentConstants",
     ],
     // Tag this module as a cts test artifact
     test_suites: [
diff --git a/tests/cts/hostside/app/AndroidManifest.xml b/tests/cts/hostside/app/AndroidManifest.xml
index ca3397b..e0f4cdc 100644
--- a/tests/cts/hostside/app/AndroidManifest.xml
+++ b/tests/cts/hostside/app/AndroidManifest.xml
@@ -43,14 +43,6 @@
                 <action android:name="android.net.VpnService"/>
             </intent-filter>
         </service>
-        <service android:name=".MyNotificationListenerService"
-             android:label="MyNotificationListenerService"
-             android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE"
-             android:exported="true">
-            <intent-filter>
-                <action android:name="android.service.notification.NotificationListenerService"/>
-            </intent-filter>
-        </service>
     </application>
 
     <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
index 454940f..e186c6b 100755
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
@@ -22,7 +22,9 @@
 import static android.Manifest.permission.WRITE_DEVICE_CONFIG;
 import static android.content.pm.PackageManager.FEATURE_TELEPHONY;
 import static android.content.pm.PackageManager.FEATURE_WIFI;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.TYPE_VPN;
+import static android.net.NetworkCapabilities.TRANSPORT_TEST;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
 import static android.os.Process.INVALID_UID;
 import static android.system.OsConstants.AF_INET;
@@ -50,6 +52,7 @@
 import static com.android.testutils.Cleanup.testAndCleanup;
 import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 import static com.android.testutils.RecorderCallback.CallbackEntry.BLOCKED_STATUS_INT;
+import static com.android.testutils.TestPermissionUtil.runAsShell;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -72,6 +75,7 @@
 import android.database.Cursor;
 import android.net.ConnectivityManager;
 import android.net.ConnectivityManager.NetworkCallback;
+import android.net.InetAddresses;
 import android.net.IpSecManager;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
@@ -91,6 +95,7 @@
 import android.net.cts.util.CtsNetUtils;
 import android.net.util.KeepaliveUtils;
 import android.net.wifi.WifiManager;
+import android.os.Binder;
 import android.os.Build;
 import android.os.Handler;
 import android.os.Looper;
@@ -120,6 +125,8 @@
 import com.android.net.module.util.ArrayTrackRecord;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.PacketBuilder;
+import com.android.testutils.AutoReleaseNetworkCallbackRule;
+import com.android.testutils.ConnectUtil;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.RecorderCallback;
@@ -217,6 +224,7 @@
     private WifiManager mWifiManager;
     private RemoteSocketFactoryClient mRemoteSocketFactoryClient;
     private CtsNetUtils mCtsNetUtils;
+    private ConnectUtil mConnectUtil;
     private PackageManager mPackageManager;
     private Context mTestContext;
     private Context mTargetContext;
@@ -230,9 +238,13 @@
     // The registered callbacks.
     private List<NetworkCallback> mRegisteredCallbacks = new ArrayList<>();
 
-    @Rule
+    @Rule(order = 1)
     public final DevSdkIgnoreRule mDevSdkIgnoreRule = new DevSdkIgnoreRule();
 
+    @Rule(order = 2)
+    public final AutoReleaseNetworkCallbackRule
+            mNetworkCallbackRule = new AutoReleaseNetworkCallbackRule();
+
     private boolean supportedHardware() {
         final PackageManager pm = getInstrumentation().getContext().getPackageManager();
         return !pm.hasSystemFeature("android.hardware.type.watch");
@@ -262,14 +274,15 @@
         mRemoteSocketFactoryClient.bind();
         mDevice.waitForIdle();
         mCtsNetUtils = new CtsNetUtils(mTestContext);
+        mConnectUtil = new ConnectUtil(mTestContext);
         mPackageManager = mTestContext.getPackageManager();
+        assumeTrue(supportedHardware());
     }
 
     @After
     public void tearDown() throws Exception {
         restorePrivateDnsSetting();
         mRemoteSocketFactoryClient.unbind();
-        mCtsNetUtils.tearDown();
         Log.i(TAG, "Stopping VPN");
         stopVpn();
         unregisterRegisteredCallbacks();
@@ -879,17 +892,14 @@
 
     @Test @IgnoreUpTo(SC_V2) // TODO: Use to Build.VERSION_CODES.SC_V2 when available
     public void testChangeUnderlyingNetworks() throws Exception {
-        assumeTrue(supportedHardware());
         assumeTrue(mPackageManager.hasSystemFeature(FEATURE_WIFI));
         assumeTrue(mPackageManager.hasSystemFeature(FEATURE_TELEPHONY));
         final TestableNetworkCallback callback = new TestableNetworkCallback();
         final boolean isWifiEnabled = mWifiManager.isWifiEnabled();
         testAndCleanup(() -> {
             // Ensure both of wifi and mobile data are connected.
-            final Network wifiNetwork = mCtsNetUtils.ensureWifiConnected();
-            assertTrue("Wifi is not connected", (wifiNetwork != null));
-            final Network cellNetwork = mCtsNetUtils.connectToCell();
-            assertTrue("Mobile data is not connected", (cellNetwork != null));
+            final Network wifiNetwork = mConnectUtil.ensureWifiValidated();
+            final Network cellNetwork = mNetworkCallbackRule.requestCell();
             // Store current default network.
             final Network defaultNetwork = mCM.getActiveNetwork();
             // Start VPN and set empty array as its underlying networks.
@@ -938,7 +948,6 @@
 
     @Test
     public void testDefault() throws Exception {
-        assumeTrue(supportedHardware());
         if (!SdkLevel.isAtLeastS() && (
                 SystemProperties.getInt("persist.adb.tcp.port", -1) > -1
                         || SystemProperties.getInt("service.adb.tcp.port", -1) > -1)) {
@@ -962,19 +971,30 @@
         final TestableNetworkCallback otherUidCallback = new TestableNetworkCallback();
         final TestableNetworkCallback myUidCallback = new TestableNetworkCallback();
         if (SdkLevel.isAtLeastS()) {
-            final int otherUid =
-                    UserHandle.of(5 /* userId */).getUid(Process.FIRST_APPLICATION_UID);
+            // Using the same appId with the test to make sure otherUid has the internet permission.
+            // This works because the UID permission map only stores the app ID and not the whole
+            // UID. If the otherUid does not have the internet permission, network access from
+            // otherUid could be considered blocked on V+.
+            final int appId = UserHandle.getAppId(Process.myUid());
+            final int otherUid = UserHandle.of(5 /* userId */).getUid(appId);
             final Handler h = new Handler(Looper.getMainLooper());
             runWithShellPermissionIdentity(() -> {
                 registerSystemDefaultNetworkCallback(systemDefaultCallback, h);
                 registerDefaultNetworkCallbackForUid(otherUid, otherUidCallback, h);
                 registerDefaultNetworkCallbackForUid(Process.myUid(), myUidCallback, h);
             }, NETWORK_SETTINGS);
-            for (TestableNetworkCallback callback :
-                    List.of(systemDefaultCallback, otherUidCallback, myUidCallback)) {
+            for (TestableNetworkCallback callback : List.of(systemDefaultCallback, myUidCallback)) {
                 callback.expectAvailableCallbacks(defaultNetwork, false /* suspended */,
                         true /* validated */, false /* blocked */, TIMEOUT_MS);
             }
+            // On V+, ConnectivityService generates blockedReasons based on bpf map contents even if
+            // the otherUid does not exist on device. So if the background chain is enabled,
+            // otherUid is blocked.
+            final boolean isOtherUidBlocked = SdkLevel.isAtLeastV()
+                    && runAsShell(NETWORK_SETTINGS, () -> mCM.getFirewallChainEnabled(
+                            FIREWALL_CHAIN_BACKGROUND));
+            otherUidCallback.expectAvailableCallbacks(defaultNetwork, false /* suspended */,
+                    true /* validated */, isOtherUidBlocked, TIMEOUT_MS);
         }
 
         FileDescriptor fd = openSocketFdInOtherApp(TEST_HOST, 80, TIMEOUT_MS);
@@ -1017,8 +1037,8 @@
             // This needs to be done before testing  private DNS because checkStrictModePrivateDns
             // will set the private DNS server to a nonexistent name, which will cause validation to
             // fail and could cause the default network to switch (e.g., from wifi to cellular).
-            systemDefaultCallback.assertNoCallback();
-            otherUidCallback.assertNoCallback();
+            assertNoCallbackExceptCapOrLpChange(systemDefaultCallback);
+            assertNoCallbackExceptCapOrLpChange(otherUidCallback);
         }
 
         checkStrictModePrivateDns();
@@ -1026,10 +1046,13 @@
         receiver.unregisterQuietly();
     }
 
+    private void assertNoCallbackExceptCapOrLpChange(TestableNetworkCallback callback) {
+        callback.assertNoCallback(c -> !(c instanceof CallbackEntry.CapabilitiesChanged
+                || c instanceof CallbackEntry.LinkPropertiesChanged));
+    }
+
     @Test
     public void testAppAllowed() throws Exception {
-        assumeTrue(supportedHardware());
-
         FileDescriptor fd = openSocketFdInOtherApp(TEST_HOST, 80, TIMEOUT_MS);
 
         // Shell app must not be put in here or it would kill the ADB-over-network use case
@@ -1137,8 +1160,6 @@
     }
 
     private void doTestAutomaticOnOffKeepaliveMode(final boolean closeSocket) throws Exception {
-        assumeTrue(supportedHardware());
-
         // Get default network first before starting VPN
         final Network defaultNetwork = mCM.getActiveNetwork();
         final TestableNetworkCallback cb = new TestableNetworkCallback();
@@ -1226,8 +1247,6 @@
 
     @Test
     public void testAppDisallowed() throws Exception {
-        assumeTrue(supportedHardware());
-
         FileDescriptor localFd = openSocketFd(TEST_HOST, 80, TIMEOUT_MS);
         FileDescriptor remoteFd = openSocketFdInOtherApp(TEST_HOST, 80, TIMEOUT_MS);
 
@@ -1260,8 +1279,6 @@
 
     @Test
     public void testSocketClosed() throws Exception {
-        assumeTrue(supportedHardware());
-
         final FileDescriptor localFd = openSocketFd(TEST_HOST, 80, TIMEOUT_MS);
         final List<FileDescriptor> remoteFds = new ArrayList<>();
 
@@ -1285,7 +1302,6 @@
 
     @Test
     public void testExcludedRoutes() throws Exception {
-        assumeTrue(supportedHardware());
         assumeTrue(SdkLevel.isAtLeastT());
 
         // Shell app must not be put in here or it would kill the ADB-over-network use case
@@ -1306,8 +1322,6 @@
 
     @Test
     public void testIncludedRoutes() throws Exception {
-        assumeTrue(supportedHardware());
-
         // Shell app must not be put in here or it would kill the ADB-over-network use case
         String allowedApps = mRemoteSocketFactoryClient.getPackageName() + "," + mPackageName;
         startVpn(new String[]{"192.0.2.2/32", "2001:db8:1:2::ffe/128"} /* addresses */,
@@ -1325,7 +1339,6 @@
 
     @Test
     public void testInterleavedRoutes() throws Exception {
-        assumeTrue(supportedHardware());
         assumeTrue(SdkLevel.isAtLeastT());
 
         // Shell app must not be put in here or it would kill the ADB-over-network use case
@@ -1353,8 +1366,6 @@
 
     @Test
     public void testGetConnectionOwnerUidSecurity() throws Exception {
-        assumeTrue(supportedHardware());
-
         DatagramSocket s;
         InetAddress address = InetAddress.getByName("localhost");
         s = new DatagramSocket();
@@ -1375,7 +1386,6 @@
 
     @Test
     public void testSetProxy() throws  Exception {
-        assumeTrue(supportedHardware());
         ProxyInfo initialProxy = mCM.getDefaultProxy();
         // Receiver for the proxy change broadcast.
         BlockingBroadcastReceiver proxyBroadcastReceiver = new ProxyChangeBroadcastReceiver();
@@ -1415,7 +1425,6 @@
 
     @Test
     public void testSetProxyDisallowedApps() throws Exception {
-        assumeTrue(supportedHardware());
         ProxyInfo initialProxy = mCM.getDefaultProxy();
 
         String disallowedApps = mPackageName;
@@ -1441,7 +1450,6 @@
 
     @Test
     public void testNoProxy() throws Exception {
-        assumeTrue(supportedHardware());
         ProxyInfo initialProxy = mCM.getDefaultProxy();
         BlockingBroadcastReceiver proxyBroadcastReceiver = new ProxyChangeBroadcastReceiver();
         proxyBroadcastReceiver.register();
@@ -1476,7 +1484,6 @@
 
     @Test
     public void testBindToNetworkWithProxy() throws Exception {
-        assumeTrue(supportedHardware());
         String allowedApps = mPackageName;
         Network initialNetwork = mCM.getActiveNetwork();
         ProxyInfo initialProxy = mCM.getDefaultProxy();
@@ -1501,9 +1508,6 @@
 
     @Test
     public void testVpnMeterednessWithNoUnderlyingNetwork() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         // VPN is not routing any traffic i.e. its underlying networks is an empty array.
         ArrayList<Network> underlyingNetworks = new ArrayList<>();
         String allowedApps = mPackageName;
@@ -1533,9 +1537,6 @@
 
     @Test
     public void testVpnMeterednessWithNullUnderlyingNetwork() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         Network underlyingNetwork = mCM.getActiveNetwork();
         if (underlyingNetwork == null) {
             Log.i(TAG, "testVpnMeterednessWithNullUnderlyingNetwork cannot execute"
@@ -1562,9 +1563,6 @@
 
     @Test
     public void testVpnMeterednessWithNonNullUnderlyingNetwork() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         Network underlyingNetwork = mCM.getActiveNetwork();
         if (underlyingNetwork == null) {
             Log.i(TAG, "testVpnMeterednessWithNonNullUnderlyingNetwork cannot execute"
@@ -1604,9 +1602,6 @@
 
     @Test
     public void testAlwaysMeteredVpnWithNullUnderlyingNetwork() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         Network underlyingNetwork = mCM.getActiveNetwork();
         if (underlyingNetwork == null) {
             Log.i(TAG, "testAlwaysMeteredVpnWithNullUnderlyingNetwork cannot execute"
@@ -1631,9 +1626,6 @@
 
     @Test
     public void testAlwaysMeteredVpnWithNonNullUnderlyingNetwork() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         Network underlyingNetwork = mCM.getActiveNetwork();
         if (underlyingNetwork == null) {
             Log.i(TAG, "testAlwaysMeteredVpnWithNonNullUnderlyingNetwork cannot execute"
@@ -1671,9 +1663,6 @@
 
     @Test
     public void testB141603906() throws Exception {
-        if (!supportedHardware()) {
-            return;
-        }
         final InetSocketAddress src = new InetSocketAddress(0);
         final InetSocketAddress dst = new InetSocketAddress(0);
         final int NUM_THREADS = 8;
@@ -1781,8 +1770,6 @@
      */
     @Test
     public void testDownloadWithDownloadManagerDisallowed() throws Exception {
-        assumeTrue(supportedHardware());
-
         // Start a VPN with DownloadManager package in disallowed list.
         startVpn(new String[] {"192.0.2.2/32", "2001:db8:1:2::ffe/128"},
                 new String[] {"192.0.2.0/24", "2001:db8::/32"},
@@ -1838,7 +1825,6 @@
 
     @Test @IgnoreUpTo(Build.VERSION_CODES.R)
     public void testBlockIncomingPackets() throws Exception {
-        assumeTrue(supportedHardware());
         final Network network = mCM.getActiveNetwork();
         assertNotNull("Requires a working Internet connection", network);
 
@@ -1907,7 +1893,6 @@
 
     @Test
     public void testSetVpnDefaultForUids() throws Exception {
-        assumeTrue(supportedHardware());
         assumeTrue(SdkLevel.isAtLeastU());
 
         final Network defaultNetwork = mCM.getActiveNetwork();
@@ -1953,6 +1938,81 @@
             });
     }
 
+    /**
+     * Check if packets to a VPN interface's IP arriving on a non-VPN interface are dropped or not.
+     * If the test interface has a different address from the VPN interface, packets must be dropped
+     * If the test interface has the same address as the VPN interface, packets must not be
+     * dropped
+     *
+     * @param duplicatedAddress true to bring up the test interface with the same address as the VPN
+     *                          interface
+     */
+    private void doTestDropPacketToVpnAddress(final boolean duplicatedAddress)
+            throws Exception {
+        final NetworkRequest request = new NetworkRequest.Builder()
+                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)
+                .removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
+                .addTransportType(TRANSPORT_TEST)
+                .build();
+        final CtsNetUtils.TestNetworkCallback callback = new CtsNetUtils.TestNetworkCallback();
+        mCM.requestNetwork(request, callback);
+        final ParcelFileDescriptor srcTunFd = runWithShellPermissionIdentity(() -> {
+            final TestNetworkManager tnm = mTestContext.getSystemService(TestNetworkManager.class);
+            List<LinkAddress> linkAddresses = duplicatedAddress
+                    ? List.of(new LinkAddress("192.0.2.2/24"),
+                            new LinkAddress("2001:db8:1:2::ffe/64")) :
+                    List.of(new LinkAddress("198.51.100.2/24"),
+                            new LinkAddress("2001:db8:3:4::ffe/64"));
+            final TestNetworkInterface iface = tnm.createTunInterface(linkAddresses);
+            tnm.setupTestNetwork(iface.getInterfaceName(), new Binder());
+            return iface.getFileDescriptor();
+        }, MANAGE_TEST_NETWORKS);
+        final Network testNetwork = callback.waitForAvailable();
+        assertNotNull(testNetwork);
+        final DatagramSocket dstSock = new DatagramSocket();
+
+        testAndCleanup(() -> {
+            startVpn(new String[] {"192.0.2.2/32", "2001:db8:1:2::ffe/128"} /* addresses */,
+                    new String[]{"0.0.0.0/0", "::/0"} /* routes */,
+                    "" /* allowedApplications */, "" /* disallowedApplications */,
+                    null /* proxyInfo */, null /* underlyingNetworks */,
+                    false /* isAlwaysMetered */);
+
+            final FileDescriptor dstUdpFd = dstSock.getFileDescriptor$();
+            checkBlockUdp(srcTunFd.getFileDescriptor(), dstUdpFd,
+                    InetAddresses.parseNumericAddress("192.0.2.2") /* dstAddress */,
+                    InetAddresses.parseNumericAddress("192.0.2.1") /* srcAddress */,
+                    duplicatedAddress ? EXPECT_PASS : EXPECT_BLOCK);
+            checkBlockUdp(srcTunFd.getFileDescriptor(), dstUdpFd,
+                    InetAddresses.parseNumericAddress("2001:db8:1:2::ffe") /* dstAddress */,
+                    InetAddresses.parseNumericAddress("2001:db8:1:2::ffa") /* srcAddress */,
+                    duplicatedAddress ? EXPECT_PASS : EXPECT_BLOCK);
+
+            // Traffic on VPN should not be affected
+            checkTrafficOnVpn();
+        }, /* cleanup */ () -> {
+                srcTunFd.close();
+                dstSock.close();
+            }, /* cleanup */ () -> {
+                runWithShellPermissionIdentity(() -> {
+                    mTestContext.getSystemService(TestNetworkManager.class)
+                            .teardownTestNetwork(testNetwork);
+                }, MANAGE_TEST_NETWORKS);
+            }, /* cleanup */ () -> {
+                mCM.unregisterNetworkCallback(callback);
+            });
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.S_V2)
+    public void testDropPacketToVpnAddress_WithoutDuplicatedAddress() throws Exception {
+        doTestDropPacketToVpnAddress(false /* duplicatedAddress */);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.S_V2)
+    public void testDropPacketToVpnAddress_WithDuplicatedAddress() throws Exception {
+        doTestDropPacketToVpnAddress(true /* duplicatedAddress */);
+    }
+
     private ByteBuffer buildIpv4UdpPacket(final Inet4Address dstAddr, final Inet4Address srcAddr,
             final short dstPort, final short srcPort, final byte[] payload) throws IOException {
 
@@ -1996,7 +2056,8 @@
     private void checkBlockUdp(
             final FileDescriptor srcTunFd,
             final FileDescriptor dstUdpFd,
-            final boolean ipv6,
+            final InetAddress dstAddress,
+            final InetAddress srcAddress,
             final boolean expectBlock) throws Exception {
         final Random random = new Random();
         final byte[] sendData = new byte[100];
@@ -2004,15 +2065,15 @@
         final short dstPort = (short) ((InetSocketAddress) Os.getsockname(dstUdpFd)).getPort();
 
         ByteBuffer buf;
-        if (ipv6) {
+        if (dstAddress instanceof Inet6Address) {
             buf = buildIpv6UdpPacket(
-                    (Inet6Address) TEST_IP6_DST_ADDR.getAddress(),
-                    (Inet6Address) TEST_IP6_SRC_ADDR.getAddress(),
+                    (Inet6Address) dstAddress,
+                    (Inet6Address) srcAddress,
                     dstPort, TEST_SRC_PORT, sendData);
         } else {
             buf = buildIpv4UdpPacket(
-                    (Inet4Address) TEST_IP4_DST_ADDR.getAddress(),
-                    (Inet4Address) TEST_IP4_SRC_ADDR.getAddress(),
+                    (Inet4Address) dstAddress,
+                    (Inet4Address) srcAddress,
                     dstPort, TEST_SRC_PORT, sendData);
         }
 
@@ -2038,8 +2099,10 @@
             final FileDescriptor srcTunFd,
             final FileDescriptor dstUdpFd,
             final boolean expectBlock) throws Exception {
-        checkBlockUdp(srcTunFd, dstUdpFd, false /* ipv6 */, expectBlock);
-        checkBlockUdp(srcTunFd, dstUdpFd, true /* ipv6 */, expectBlock);
+        checkBlockUdp(srcTunFd, dstUdpFd, TEST_IP4_DST_ADDR.getAddress(),
+                TEST_IP4_SRC_ADDR.getAddress(), expectBlock);
+        checkBlockUdp(srcTunFd, dstUdpFd, TEST_IP6_DST_ADDR.getAddress(),
+                TEST_IP6_SRC_ADDR.getAddress(), expectBlock);
     }
 
     private class DetailedBlockedStatusCallback extends TestableNetworkCallback {
diff --git a/tests/cts/hostside/app2/Android.bp b/tests/cts/hostside/app2/Android.bp
index c526172..12ea23b 100644
--- a/tests/cts/hostside/app2/Android.bp
+++ b/tests/cts/hostside/app2/Android.bp
@@ -35,5 +35,5 @@
         "general-tests",
         "sts",
     ],
-    certificate: ":cts-net-app",
+    sdk_version: "test_current",
 }
diff --git a/tests/cts/hostside/app2/AndroidManifest.xml b/tests/cts/hostside/app2/AndroidManifest.xml
index 2c2d957..412b307 100644
--- a/tests/cts/hostside/app2/AndroidManifest.xml
+++ b/tests/cts/hostside/app2/AndroidManifest.xml
@@ -40,33 +40,8 @@
     <application android:usesCleartextTraffic="true"
             android:testOnly="true"
             android:debuggable="true">
-
-        <activity android:name=".MyActivity"
-             android:exported="true"/>
-        <service android:name=".MyService"
-             android:exported="true"/>
-        <service android:name=".MyForegroundService"
-             android:foregroundServiceType="specialUse"
-             android:exported="true">
-            <property android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE" 
-                      android:value="Connectivity" />
-        </service>
         <service android:name=".RemoteSocketFactoryService"
              android:exported="true"/>
-
-        <receiver android:name=".MyBroadcastReceiver"
-             android:exported="true">
-            <intent-filter>
-                <action android:name="android.net.conn.RESTRICT_BACKGROUND_CHANGED"/>
-                <action android:name="com.android.cts.net.hostside.app2.action.GET_COUNTERS"/>
-                <action android:name="com.android.cts.net.hostside.app2.action.GET_RESTRICT_BACKGROUND_STATUS"/>
-                <action android:name="com.android.cts.net.hostside.app2.action.CHECK_NETWORK"/>
-                <action android:name="com.android.cts.net.hostside.app2.action.SEND_NOTIFICATION"/>
-                <action android:name="com.android.cts.net.hostside.app2.action.SHOW_TOAST"/>
-                </intent-filter>
-        </receiver>
-        <service android:name=".MyJobService"
-            android:permission="android.permission.BIND_JOB_SERVICE" />
     </application>
 
     <!--
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/Common.java b/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/Common.java
deleted file mode 100644
index 37dc7a0..0000000
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/Common.java
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.cts.net.hostside.app2;
-
-import android.app.ActivityManager;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageManager.NameNotFoundException;
-import android.os.AsyncTask;
-import android.os.Bundle;
-import android.os.Process;
-import android.os.RemoteException;
-import android.util.Log;
-
-import com.android.cts.net.hostside.INetworkStateObserver;
-
-public final class Common {
-
-    static final String TAG = "CtsNetApp2";
-
-    // Constants below must match values defined on app's
-    // AbstractRestrictBackgroundNetworkTestCase.java
-    static final String MANIFEST_RECEIVER = "ManifestReceiver";
-    static final String DYNAMIC_RECEIVER = "DynamicReceiver";
-
-    static final String ACTION_RECEIVER_READY =
-            "com.android.cts.net.hostside.app2.action.RECEIVER_READY";
-    static final String ACTION_FINISH_ACTIVITY =
-            "com.android.cts.net.hostside.app2.action.FINISH_ACTIVITY";
-    static final String ACTION_FINISH_JOB =
-            "com.android.cts.net.hostside.app2.action.FINISH_JOB";
-    static final String ACTION_SHOW_TOAST =
-            "com.android.cts.net.hostside.app2.action.SHOW_TOAST";
-    // Copied from com.android.server.net.NetworkPolicyManagerService class
-    static final String ACTION_SNOOZE_WARNING =
-            "com.android.server.net.action.SNOOZE_WARNING";
-
-    static final String NOTIFICATION_TYPE_CONTENT = "CONTENT";
-    static final String NOTIFICATION_TYPE_DELETE = "DELETE";
-    static final String NOTIFICATION_TYPE_FULL_SCREEN = "FULL_SCREEN";
-    static final String NOTIFICATION_TYPE_BUNDLE = "BUNDLE";
-    static final String NOTIFICATION_TYPE_ACTION = "ACTION";
-    static final String NOTIFICATION_TYPE_ACTION_BUNDLE = "ACTION_BUNDLE";
-    static final String NOTIFICATION_TYPE_ACTION_REMOTE_INPUT = "ACTION_REMOTE_INPUT";
-
-    static final String TEST_PKG = "com.android.cts.net.hostside";
-    static final String KEY_NETWORK_STATE_OBSERVER = TEST_PKG + ".observer";
-    static final String KEY_SKIP_VALIDATION_CHECKS = TEST_PKG + ".skip_validation_checks";
-
-    static final int TYPE_COMPONENT_ACTIVTY = 0;
-    static final int TYPE_COMPONENT_FOREGROUND_SERVICE = 1;
-    static final int TYPE_COMPONENT_EXPEDITED_JOB = 2;
-
-    static int getUid(Context context) {
-        final String packageName = context.getPackageName();
-        try {
-            return context.getPackageManager().getPackageUid(packageName, 0);
-        } catch (NameNotFoundException e) {
-            throw new IllegalStateException("Could not get UID for " + packageName, e);
-        }
-    }
-
-    private static boolean validateComponentState(Context context, int componentType,
-            INetworkStateObserver observer) throws RemoteException {
-        final ActivityManager activityManager = context.getSystemService(ActivityManager.class);
-        switch (componentType) {
-            case TYPE_COMPONENT_ACTIVTY: {
-                final int procState = activityManager.getUidProcessState(Process.myUid());
-                if (procState != ActivityManager.PROCESS_STATE_TOP) {
-                    observer.onNetworkStateChecked(
-                            INetworkStateObserver.RESULT_ERROR_UNEXPECTED_PROC_STATE,
-                            "Unexpected procstate: " + procState);
-                    return false;
-                }
-                return true;
-            }
-            case TYPE_COMPONENT_FOREGROUND_SERVICE: {
-                final int procState = activityManager.getUidProcessState(Process.myUid());
-                if (procState != ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE) {
-                    observer.onNetworkStateChecked(
-                            INetworkStateObserver.RESULT_ERROR_UNEXPECTED_PROC_STATE,
-                            "Unexpected procstate: " + procState);
-                    return false;
-                }
-                return true;
-            }
-            case TYPE_COMPONENT_EXPEDITED_JOB: {
-                final int capabilities = activityManager.getUidProcessCapabilities(Process.myUid());
-                if ((capabilities
-                        & ActivityManager.PROCESS_CAPABILITY_POWER_RESTRICTED_NETWORK) == 0) {
-                    observer.onNetworkStateChecked(
-                            INetworkStateObserver.RESULT_ERROR_UNEXPECTED_CAPABILITIES,
-                            "Unexpected capabilities: " + capabilities);
-                    return false;
-                }
-                return true;
-            }
-            default: {
-                observer.onNetworkStateChecked(INetworkStateObserver.RESULT_ERROR_OTHER,
-                        "Unknown component type: " + componentType);
-                return false;
-            }
-        }
-    }
-
-    static void notifyNetworkStateObserver(Context context, Intent intent, int componentType) {
-        if (intent == null) {
-            return;
-        }
-        final Bundle extras = intent.getExtras();
-        notifyNetworkStateObserver(context, extras, componentType);
-    }
-
-    static void notifyNetworkStateObserver(Context context, Bundle extras, int componentType) {
-        if (extras == null) {
-            return;
-        }
-        final INetworkStateObserver observer = INetworkStateObserver.Stub.asInterface(
-                extras.getBinder(KEY_NETWORK_STATE_OBSERVER));
-        if (observer != null) {
-            try {
-                final boolean skipValidation = extras.getBoolean(KEY_SKIP_VALIDATION_CHECKS);
-                if (!skipValidation && !validateComponentState(context, componentType, observer)) {
-                    return;
-                }
-            } catch (RemoteException e) {
-                Log.e(TAG, "Error occurred while informing the validation result: " + e);
-            }
-            AsyncTask.execute(() -> {
-                try {
-                    observer.onNetworkStateChecked(
-                            INetworkStateObserver.RESULT_SUCCESS_NETWORK_STATE_CHECKED,
-                            MyBroadcastReceiver.checkNetworkStatus(context));
-                } catch (RemoteException e) {
-                    Log.e(TAG, "Error occurred while notifying the observer: " + e);
-                }
-            });
-        }
-    }
-}
diff --git a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyBroadcastReceiver.java b/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyBroadcastReceiver.java
deleted file mode 100644
index 825f2c9..0000000
--- a/tests/cts/hostside/app2/src/com/android/cts/net/hostside/app2/MyBroadcastReceiver.java
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.cts.net.hostside.app2;
-
-import static android.net.ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED;
-
-import static com.android.cts.net.hostside.app2.Common.ACTION_RECEIVER_READY;
-import static com.android.cts.net.hostside.app2.Common.ACTION_SHOW_TOAST;
-import static com.android.cts.net.hostside.app2.Common.ACTION_SNOOZE_WARNING;
-import static com.android.cts.net.hostside.app2.Common.MANIFEST_RECEIVER;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_ACTION;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_ACTION_BUNDLE;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_ACTION_REMOTE_INPUT;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_BUNDLE;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_CONTENT;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_DELETE;
-import static com.android.cts.net.hostside.app2.Common.NOTIFICATION_TYPE_FULL_SCREEN;
-import static com.android.cts.net.hostside.app2.Common.TAG;
-import static com.android.cts.net.hostside.app2.Common.getUid;
-
-import android.app.Notification;
-import android.app.Notification.Action;
-import android.app.NotificationManager;
-import android.app.PendingIntent;
-import android.app.RemoteInput;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.net.ConnectivityManager;
-import android.net.NetworkInfo;
-import android.os.Bundle;
-import android.util.Log;
-import android.widget.Toast;
-
-import java.net.HttpURLConnection;
-import java.net.InetAddress;
-import java.net.URL;
-
-/**
- * Receiver used to:
- * <ol>
- *   <li>Count number of {@code RESTRICT_BACKGROUND_CHANGED} broadcasts received.
- *   <li>Show a toast.
- * </ol>
- */
-public class MyBroadcastReceiver extends BroadcastReceiver {
-
-    private static final int NETWORK_TIMEOUT_MS = 5 * 1000;
-
-    private final String mName;
-
-    public MyBroadcastReceiver() {
-        this(MANIFEST_RECEIVER);
-    }
-
-    MyBroadcastReceiver(String name) {
-        Log.d(TAG, "Constructing MyBroadcastReceiver named " + name);
-        mName = name;
-    }
-
-    @Override
-    public void onReceive(Context context, Intent intent) {
-        Log.d(TAG, "onReceive() for " + mName + ": " + intent);
-        final String action = intent.getAction();
-        switch (action) {
-            case ACTION_SNOOZE_WARNING:
-                increaseCounter(context, action);
-                break;
-            case ACTION_RESTRICT_BACKGROUND_CHANGED:
-                increaseCounter(context, action);
-                break;
-            case ACTION_RECEIVER_READY:
-                final String message = mName + " is ready to rumble";
-                Log.d(TAG, message);
-                setResultData(message);
-                break;
-            case ACTION_SHOW_TOAST:
-                showToast(context);
-                break;
-            default:
-                Log.e(TAG, "received unexpected action: " + action);
-        }
-    }
-
-    @Override
-    public String toString() {
-        return "[MyBroadcastReceiver: mName=" + mName + "]";
-    }
-
-    private void increaseCounter(Context context, String action) {
-        final SharedPreferences prefs = context.getApplicationContext()
-                .getSharedPreferences(mName, Context.MODE_PRIVATE);
-        final int value = prefs.getInt(action, 0) + 1;
-        Log.d(TAG, "increaseCounter('" + action + "'): setting '" + mName + "' to " + value);
-        prefs.edit().putInt(action, value).apply();
-    }
-
-    static int getCounter(Context context, String action, String receiverName) {
-        final SharedPreferences prefs = context.getSharedPreferences(receiverName,
-                Context.MODE_PRIVATE);
-        final int value = prefs.getInt(action, 0);
-        Log.d(TAG, "getCounter('" + action + "', '" + receiverName + "'): " + value);
-        return value;
-    }
-
-    static String getRestrictBackgroundStatus(Context context) {
-        final ConnectivityManager cm = (ConnectivityManager) context
-                .getSystemService(Context.CONNECTIVITY_SERVICE);
-        final int apiStatus = cm.getRestrictBackgroundStatus();
-        Log.d(TAG, "getRestrictBackgroundStatus: returning " + apiStatus);
-        return String.valueOf(apiStatus);
-    }
-
-    private static final String NETWORK_STATUS_TEMPLATE = "%s|%s|%s|%s|%s";
-    /**
-     * Checks whether the network is available and return a string which can then be send as a
-     * result data for the ordered broadcast.
-     *
-     * <p>
-     * The string has the following format:
-     *
-     * <p><pre><code>
-     * NetinfoState|NetinfoDetailedState|RealConnectionCheck|RealConnectionCheckDetails|Netinfo
-     * </code></pre>
-     *
-     * <p>Where:
-     *
-     * <ul>
-     * <li>{@code NetinfoState}: enum value of {@link NetworkInfo.State}.
-     * <li>{@code NetinfoDetailedState}: enum value of {@link NetworkInfo.DetailedState}.
-     * <li>{@code RealConnectionCheck}: boolean value of a real connection check (i.e., an attempt
-     *     to access an external website.
-     * <li>{@code RealConnectionCheckDetails}: if HTTP output core or exception string of the real
-     *     connection attempt
-     * <li>{@code Netinfo}: string representation of the {@link NetworkInfo}.
-     * </ul>
-     *
-     * For example, if the connection was established fine, the result would be something like:
-     * <p><pre><code>
-     * CONNECTED|CONNECTED|true|200|[type: WIFI[], state: CONNECTED/CONNECTED, reason: ...]
-     * </code></pre>
-     *
-     */
-    // TODO: now that it uses Binder, it counl return a Bundle with the data parts instead...
-    static String checkNetworkStatus(Context context) {
-        final ConnectivityManager cm =
-                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
-        // TODO: connect to a hostside server instead
-        final String address = "http://example.com";
-        final NetworkInfo networkInfo = cm.getActiveNetworkInfo();
-        Log.d(TAG, "Running checkNetworkStatus() on thread "
-                + Thread.currentThread().getName() + " for UID " + getUid(context)
-                + "\n\tactiveNetworkInfo: " + networkInfo + "\n\tURL: " + address);
-        boolean checkStatus = false;
-        String checkDetails = "N/A";
-        try {
-            final URL url = new URL(address);
-            final HttpURLConnection conn = (HttpURLConnection) url.openConnection();
-            conn.setReadTimeout(NETWORK_TIMEOUT_MS);
-            conn.setConnectTimeout(NETWORK_TIMEOUT_MS / 2);
-            conn.setRequestMethod("GET");
-            conn.setDoInput(true);
-            conn.connect();
-            final int response = conn.getResponseCode();
-            checkStatus = true;
-            checkDetails = "HTTP response for " + address + ": " + response;
-        } catch (Exception e) {
-            checkStatus = false;
-            checkDetails = "Exception getting " + address + ": " + e;
-        }
-        // If the app tries to make a network connection in the foreground immediately after
-        // trying to do the same when it's network access was blocked, it could receive a
-        // UnknownHostException due to the cached DNS entry. So, clear the dns cache after
-        // every network access for now until we have a fix on the platform side.
-        InetAddress.clearDnsCache();
-        Log.d(TAG, checkDetails);
-        final String state, detailedState;
-        if (networkInfo != null) {
-            state = networkInfo.getState().name();
-            detailedState = networkInfo.getDetailedState().name();
-        } else {
-            state = detailedState = "null";
-        }
-        final String status = String.format(NETWORK_STATUS_TEMPLATE, state, detailedState,
-                Boolean.valueOf(checkStatus), checkDetails, networkInfo);
-        Log.d(TAG, "Offering " + status);
-        return status;
-    }
-
-    /**
-     * Sends a system notification containing actions with pending intents to launch the app's
-     * main activitiy or service.
-     */
-    static void sendNotification(Context context, String channelId, int notificationId,
-            String notificationType ) {
-        Log.d(TAG, "sendNotification: id=" + notificationId + ", type=" + notificationType);
-        final Intent serviceIntent = new Intent(context, MyService.class);
-        final PendingIntent pendingIntent = PendingIntent.getService(context, 0, serviceIntent,
-                PendingIntent.FLAG_MUTABLE);
-        final Bundle bundle = new Bundle();
-        bundle.putCharSequence("parcelable", "I am not");
-
-        final Notification.Builder builder = new Notification.Builder(context, channelId)
-                .setSmallIcon(R.drawable.ic_notification);
-
-        Action action = null;
-        switch (notificationType) {
-            case NOTIFICATION_TYPE_CONTENT:
-                builder
-                    .setContentTitle("Light, Cameras...")
-                    .setContentIntent(pendingIntent);
-                break;
-            case NOTIFICATION_TYPE_DELETE:
-                builder.setDeleteIntent(pendingIntent);
-                break;
-            case NOTIFICATION_TYPE_FULL_SCREEN:
-                builder.setFullScreenIntent(pendingIntent, true);
-                break;
-            case NOTIFICATION_TYPE_BUNDLE:
-                bundle.putParcelable("Magnum P.I. (Pending Intent)", pendingIntent);
-                builder.setExtras(bundle);
-                break;
-            case NOTIFICATION_TYPE_ACTION:
-                action = new Action.Builder(
-                        R.drawable.ic_notification, "ACTION", pendingIntent)
-                        .build();
-                builder.addAction(action);
-                break;
-            case NOTIFICATION_TYPE_ACTION_BUNDLE:
-                bundle.putParcelable("Magnum A.P.I. (Action Pending Intent)", pendingIntent);
-                action = new Action.Builder(
-                        R.drawable.ic_notification, "ACTION WITH BUNDLE", null)
-                        .addExtras(bundle)
-                        .build();
-                builder.addAction(action);
-                break;
-            case NOTIFICATION_TYPE_ACTION_REMOTE_INPUT:
-                bundle.putParcelable("Magnum R.I. (Remote Input)", null);
-                final RemoteInput remoteInput = new RemoteInput.Builder("RI")
-                    .addExtras(bundle)
-                    .build();
-                action = new Action.Builder(
-                        R.drawable.ic_notification, "ACTION WITH REMOTE INPUT", pendingIntent)
-                        .addRemoteInput(remoteInput)
-                        .build();
-                builder.addAction(action);
-                break;
-            default:
-                Log.e(TAG, "Unknown notification type: " + notificationType);
-                return;
-        }
-
-        final Notification notification = builder.build();
-        ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE))
-            .notify(notificationId, notification);
-    }
-
-    private void showToast(Context context) {
-        Toast.makeText(context, "Toast from CTS test", Toast.LENGTH_SHORT).show();
-        setResultData("Shown");
-    }
-}
diff --git a/tests/cts/hostside/certs/Android.bp b/tests/cts/hostside/certs/Android.bp
deleted file mode 100644
index 301973e..0000000
--- a/tests/cts/hostside/certs/Android.bp
+++ /dev/null
@@ -1,9 +0,0 @@
-package {
-    default_team: "trendy_team_fwk_core_networking",
-    default_applicable_licenses: ["Android-Apache-2.0"],
-}
-
-android_app_certificate {
-    name: "cts-net-app",
-    certificate: "cts-net-app",
-}
diff --git a/tests/cts/hostside/networkslicingtestapp/Android.bp b/tests/cts/hostside/networkslicingtestapp/Android.bp
index 100b6e4..c220000 100644
--- a/tests/cts/hostside/networkslicingtestapp/Android.bp
+++ b/tests/cts/hostside/networkslicingtestapp/Android.bp
@@ -44,6 +44,7 @@
         "CtsHostsideNetworkCapTestsAppDefaults",
     ],
     manifest: "AndroidManifestWithoutProperty.xml",
+    sdk_version: "test_current",
 }
 
 android_test_helper_app {
@@ -53,6 +54,7 @@
         "CtsHostsideNetworkCapTestsAppDefaults",
     ],
     manifest: "AndroidManifestWithProperty.xml",
+    sdk_version: "test_current",
 }
 
 android_test_helper_app {
@@ -63,4 +65,5 @@
     ],
     target_sdk_version: "33",
     manifest: "AndroidManifestWithoutProperty.xml",
+    sdk_version: "test_current",
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java b/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
index ca95ed6..69d61b3 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideNetworkTestCase.java
@@ -18,9 +18,7 @@
 
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assert.fail;
 
-import com.android.ddmlib.Log;
 import com.android.modules.utils.build.testing.DeviceSdkLevel;
 import com.android.tradefed.device.DeviceNotAvailableException;
 import com.android.tradefed.invoker.TestInformation;
@@ -31,17 +29,11 @@
 import com.android.tradefed.testtype.junit4.AfterClassWithInfo;
 import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
 import com.android.tradefed.testtype.junit4.BeforeClassWithInfo;
-import com.android.tradefed.testtype.junit4.DeviceTestRunOptions;
-import com.android.tradefed.util.RunUtil;
 
 import org.junit.runner.RunWith;
 
-import java.util.Map;
-
 @RunWith(DeviceJUnit4ClassRunner.class)
 abstract class HostsideNetworkTestCase extends BaseHostJUnit4Test {
-    protected static final boolean DEBUG = false;
-    protected static final String TAG = "HostsideNetworkTests";
     protected static final String TEST_PKG = "com.android.cts.net.hostside";
     protected static final String TEST_APK = "CtsHostsideNetworkTestsApp.apk";
     protected static final String TEST_APK_NEXT = "CtsHostsideNetworkTestsAppNext.apk";
@@ -103,67 +95,4 @@
             throws DeviceNotAvailableException {
         uninstallPackage(getTestInformation(), packageName, shouldSucceed);
     }
-
-    protected void assertPackageUninstalled(String packageName) throws DeviceNotAvailableException,
-            InterruptedException {
-        final String command = "cmd package list packages " + packageName;
-        final int max_tries = 5;
-        for (int i = 1; i <= max_tries; i++) {
-            final String result = runCommand(command);
-            if (result.trim().isEmpty()) {
-                return;
-            }
-            // 'list packages' filters by substring, so we need to iterate with the results
-            // and check one by one, otherwise 'com.android.cts.net.hostside' could return
-            // 'com.android.cts.net.hostside.app2'
-            boolean found = false;
-            for (String line : result.split("[\\r\\n]+")) {
-                if (line.endsWith(packageName)) {
-                    found = true;
-                    break;
-                }
-            }
-            if (!found) {
-                return;
-            }
-            i++;
-            Log.v(TAG, "Package " + packageName + " not uninstalled yet (" + result
-                    + "); sleeping 1s before polling again");
-            RunUtil.getDefault().sleep(1000);
-        }
-        fail("Package '" + packageName + "' not uinstalled after " + max_tries + " seconds");
-    }
-
-    protected int getUid(String packageName) throws DeviceNotAvailableException {
-        final int currentUser = getDevice().getCurrentUser();
-        final String uidLines = runCommand(
-                "cmd package list packages -U --user " + currentUser + " " + packageName);
-        for (String uidLine : uidLines.split("\n")) {
-            if (uidLine.startsWith("package:" + packageName + " uid:")) {
-                final String[] uidLineParts = uidLine.split(":");
-                // 3rd entry is package uid
-                return Integer.parseInt(uidLineParts[2].trim());
-            }
-        }
-        throw new IllegalStateException("Failed to find the test app on the device; pkg="
-                + packageName + ", u=" + currentUser);
-    }
-
-    protected boolean runDeviceTestsWithArgs(String packageName, String className,
-            String methodName, Map<String, String> args) throws DeviceNotAvailableException {
-        final DeviceTestRunOptions deviceTestRunOptions = new DeviceTestRunOptions(packageName)
-                .setTestClassName(className)
-                .setTestMethodName(methodName);
-        for (Map.Entry<String, String> arg : args.entrySet()) {
-            deviceTestRunOptions.addInstrumentationArg(arg.getKey(), arg.getValue());
-        }
-        return runDeviceTests(deviceTestRunOptions);
-    }
-
-    protected String runCommand(String command) throws DeviceNotAvailableException {
-        Log.d(TAG, "Command: '" + command + "'");
-        final String output = getDevice().executeShellCommand(command);
-        if (DEBUG) Log.v(TAG, "Output: " + output.trim());
-        return output;
-    }
 }
diff --git a/tests/cts/hostside/src/com/android/cts/net/HostsideVpnTests.java b/tests/cts/hostside/src/com/android/cts/net/HostsideVpnTests.java
index 4f21af7..cea60f9 100644
--- a/tests/cts/hostside/src/com/android/cts/net/HostsideVpnTests.java
+++ b/tests/cts/hostside/src/com/android/cts/net/HostsideVpnTests.java
@@ -18,8 +18,6 @@
 
 import android.platform.test.annotations.RequiresDevice;
 
-import com.android.testutils.SkipPresubmit;
-
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -37,13 +35,11 @@
         uninstallPackage(TEST_APP2_PKG, true);
     }
 
-    @SkipPresubmit(reason = "Out of SLO flakiness")
     @Test
     public void testChangeUnderlyingNetworks() throws Exception {
         runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest", "testChangeUnderlyingNetworks");
     }
 
-    @SkipPresubmit(reason = "Out of SLO flakiness")
     @Test
     public void testDefault() throws Exception {
         runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest", "testDefault");
@@ -166,9 +162,20 @@
         runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest", "testBlockIncomingPackets");
     }
 
-    @SkipPresubmit(reason = "Out of SLO flakiness")
     @Test
     public void testSetVpnDefaultForUids() throws Exception {
         runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest", "testSetVpnDefaultForUids");
     }
+
+    @Test
+    public void testDropPacketToVpnAddress_WithoutDuplicatedAddress() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest",
+                "testDropPacketToVpnAddress_WithoutDuplicatedAddress");
+    }
+
+    @Test
+    public void testDropPacketToVpnAddress_WithDuplicatedAddress() throws Exception {
+        runDeviceTests(TEST_PKG, TEST_PKG + ".VpnTest",
+                "testDropPacketToVpnAddress_WithDuplicatedAddress");
+    }
 }
diff --git a/tests/cts/multidevices/Android.bp b/tests/cts/multidevices/Android.bp
index 5ac4229..1d30d68 100644
--- a/tests/cts/multidevices/Android.bp
+++ b/tests/cts/multidevices/Android.bp
@@ -14,12 +14,16 @@
 
 package {
     default_applicable_licenses: ["Android-Apache-2.0"],
+    default_team: "trendy_team_fwk_core_networking",
 }
 
 python_test_host {
     name: "CtsConnectivityMultiDevicesTestCases",
     main: "connectivity_multi_devices_test.py",
-    srcs: ["connectivity_multi_devices_test.py"],
+    srcs: [
+        "connectivity_multi_devices_test.py",
+        "utils/*.py",
+    ],
     libs: [
         "mobly",
     ],
diff --git a/tests/cts/multidevices/connectivity_multi_devices_test.py b/tests/cts/multidevices/connectivity_multi_devices_test.py
index ab88504..abd6fe2 100644
--- a/tests/cts/multidevices/connectivity_multi_devices_test.py
+++ b/tests/cts/multidevices/connectivity_multi_devices_test.py
@@ -1,23 +1,17 @@
 # Lint as: python3
 """Connectivity multi devices tests."""
-import base64
 import sys
-import uuid
-
-from mobly import asserts
 from mobly import base_test
 from mobly import test_runner
 from mobly import utils
 from mobly.controllers import android_device
+from utils import mdns_utils
+from utils import tether_utils
+from utils.tether_utils import UpstreamType
 
 CONNECTIVITY_MULTI_DEVICES_SNIPPET_PACKAGE = "com.google.snippet.connectivity"
 
 
-class UpstreamType:
-  CELLULAR = 1
-  WIFI = 2
-
-
 class ConnectivityMultiDevicesTest(base_test.BaseTestClass):
 
   def setup_class(self):
@@ -40,67 +34,53 @@
         raise_on_exception=True,
     )
 
-  @staticmethod
-  def generate_uuid32_base64():
-    """Generates a UUID32 and encodes it in Base64.
-
-    Returns:
-        str: The Base64-encoded UUID32 string. Which is 22 characters.
-    """
-    return base64.b64encode(uuid.uuid1().bytes).decode("utf-8").strip("=")
-
-  def _do_test_hotspot_for_upstream_type(self, upstream_type):
-    """Test hotspot with the specified upstream type.
-
-    This test create a hotspot, make the client connect
-    to it, and verify the packet is forwarded by the hotspot.
-    """
-    server = self.serverDevice.connectivity_multi_devices_snippet
-    client = self.clientDevice.connectivity_multi_devices_snippet
-
-    # Assert pre-conditions specific to each upstream type.
-    asserts.skip_if(not client.hasWifiFeature(), "Client requires Wifi feature")
-    asserts.skip_if(
-      not server.hasHotspotFeature(), "Server requires hotspot feature"
-    )
-    if upstream_type == UpstreamType.CELLULAR:
-      asserts.skip_if(
-          not server.hasTelephonyFeature(), "Server requires Telephony feature"
-      )
-      server.requestCellularAndEnsureDefault()
-    elif upstream_type == UpstreamType.WIFI:
-      asserts.skip_if(
-          not server.isStaApConcurrencySupported(),
-          "Server requires Wifi AP + STA concurrency",
-      )
-      server.ensureWifiIsDefault()
-    else:
-      raise ValueError(f"Invalid upstream type: {upstream_type}")
-
-    # Generate ssid/passphrase with random characters to make sure nearby devices won't
-    # connect unexpectedly. Note that total length of ssid cannot go over 32.
-    testSsid = "HOTSPOT-" + self.generate_uuid32_base64()
-    testPassphrase = self.generate_uuid32_base64()
-
-    try:
-      # Create a hotspot with fixed SSID and password.
-      server.startHotspot(testSsid, testPassphrase)
-
-      # Make the client connects to the hotspot.
-      client.connectToWifi(testSsid, testPassphrase, True)
-
-    finally:
-      if upstream_type == UpstreamType.CELLULAR:
-        server.unrequestCellular()
-      # Teardown the hotspot.
-      server.stopAllTethering()
-
   def test_hotspot_upstream_wifi(self):
-    self._do_test_hotspot_for_upstream_type(UpstreamType.WIFI)
+    tether_utils.assume_hotspot_test_preconditions(
+        self.serverDevice, self.clientDevice, UpstreamType.WIFI
+    )
+    try:
+      # Connectivity of the client verified by asserting the validated capability.
+      tether_utils.setup_hotspot_and_client_for_upstream_type(
+          self.serverDevice, self.clientDevice, UpstreamType.WIFI
+      )
+    finally:
+      tether_utils.cleanup_tethering_for_upstream_type(
+          self.serverDevice, UpstreamType.WIFI
+      )
 
   def test_hotspot_upstream_cellular(self):
-    self._do_test_hotspot_for_upstream_type(UpstreamType.CELLULAR)
+    tether_utils.assume_hotspot_test_preconditions(
+        self.serverDevice, self.clientDevice, UpstreamType.CELLULAR
+    )
+    try:
+      # Connectivity of the client verified by asserting the validated capability.
+      tether_utils.setup_hotspot_and_client_for_upstream_type(
+          self.serverDevice, self.clientDevice, UpstreamType.CELLULAR
+      )
+    finally:
+      tether_utils.cleanup_tethering_for_upstream_type(
+          self.serverDevice, UpstreamType.CELLULAR
+      )
 
+  def test_mdns_via_hotspot(self):
+    tether_utils.assume_hotspot_test_preconditions(
+        self.serverDevice, self.clientDevice, UpstreamType.NONE
+    )
+    try:
+      # Connectivity of the client verified by asserting the validated capability.
+      tether_utils.setup_hotspot_and_client_for_upstream_type(
+        self.serverDevice, self.clientDevice, UpstreamType.NONE
+      )
+      mdns_utils.register_mdns_service_and_discover_resolve(
+        self.clientDevice, self.serverDevice
+      )
+    finally:
+      mdns_utils.cleanup_mdns_service(
+        self.clientDevice, self.serverDevice
+      )
+      tether_utils.cleanup_tethering_for_upstream_type(
+        self.serverDevice, UpstreamType.NONE
+      )
 
 if __name__ == "__main__":
   # Take test args
diff --git a/tests/cts/multidevices/snippet/Android.bp b/tests/cts/multidevices/snippet/Android.bp
index 5940cbb..b0b32c2 100644
--- a/tests/cts/multidevices/snippet/Android.bp
+++ b/tests/cts/multidevices/snippet/Android.bp
@@ -25,6 +25,7 @@
     ],
     srcs: [
         "ConnectivityMultiDevicesSnippet.kt",
+        "MdnsMultiDevicesSnippet.kt",
     ],
     manifest: "AndroidManifest.xml",
     static_libs: [
diff --git a/tests/cts/multidevices/snippet/AndroidManifest.xml b/tests/cts/multidevices/snippet/AndroidManifest.xml
index 9ed8146..967e581 100644
--- a/tests/cts/multidevices/snippet/AndroidManifest.xml
+++ b/tests/cts/multidevices/snippet/AndroidManifest.xml
@@ -27,7 +27,8 @@
          of a snippet class -->
     <meta-data
         android:name="mobly-snippets"
-        android:value="com.google.snippet.connectivity.ConnectivityMultiDevicesSnippet" />
+        android:value="com.google.snippet.connectivity.ConnectivityMultiDevicesSnippet,
+                       com.google.snippet.connectivity.MdnsMultiDevicesSnippet" />
   </application>
   <!-- Add an instrumentation tag so that the app can be launched through an
        instrument command. The runner `com.google.android.mobly.snippet.SnippetRunner`
diff --git a/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
index 115210b..f4ad2c4 100644
--- a/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
+++ b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
@@ -16,11 +16,11 @@
 
 package com.google.snippet.connectivity
 
+import android.Manifest.permission.NETWORK_SETTINGS
 import android.Manifest.permission.OVERRIDE_WIFI_CONFIG
 import android.content.pm.PackageManager.FEATURE_TELEPHONY
 import android.content.pm.PackageManager.FEATURE_WIFI
 import android.net.ConnectivityManager
-import android.net.Network
 import android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED
 import android.net.NetworkCapabilities.TRANSPORT_WIFI
 import android.net.NetworkRequest
@@ -30,27 +30,37 @@
 import android.net.wifi.SoftApConfiguration
 import android.net.wifi.SoftApConfiguration.SECURITY_TYPE_WPA2_PSK
 import android.net.wifi.WifiConfiguration
+import android.net.wifi.WifiInfo
 import android.net.wifi.WifiManager
 import android.net.wifi.WifiNetworkSpecifier
 import android.net.wifi.WifiSsid
 import androidx.test.platform.app.InstrumentationRegistry
+import com.android.testutils.AutoReleaseNetworkCallbackRule
 import com.android.testutils.ConnectUtil
-import com.android.testutils.RecorderCallback.CallbackEntry.Available
+import com.android.testutils.NetworkCallbackHelper
 import com.android.testutils.RecorderCallback.CallbackEntry.CapabilitiesChanged
 import com.android.testutils.TestableNetworkCallback
 import com.android.testutils.runAsShell
 import com.google.android.mobly.snippet.Snippet
 import com.google.android.mobly.snippet.rpc.Rpc
+import org.junit.Rule
 
 class ConnectivityMultiDevicesSnippet : Snippet {
+    @get:Rule
+    val networkCallbackRule = AutoReleaseNetworkCallbackRule()
     private val context = InstrumentationRegistry.getInstrumentation().getTargetContext()
     private val wifiManager = context.getSystemService(WifiManager::class.java)!!
     private val cm = context.getSystemService(ConnectivityManager::class.java)!!
     private val pm = context.packageManager
     private val ctsNetUtils = CtsNetUtils(context)
+    private val cbHelper = NetworkCallbackHelper()
     private val ctsTetheringUtils = CtsTetheringUtils(context)
     private var oldSoftApConfig: SoftApConfiguration? = null
 
+    override fun shutdown() {
+        cbHelper.unregisterAll()
+    }
+
     @Rpc(description = "Check whether the device has wifi feature.")
     fun hasWifiFeature() = pm.hasSystemFeature(FEATURE_WIFI)
 
@@ -58,20 +68,18 @@
     fun hasTelephonyFeature() = pm.hasSystemFeature(FEATURE_TELEPHONY)
 
     @Rpc(description = "Check whether the device supporters AP + STA concurrency.")
-    fun isStaApConcurrencySupported() {
-        wifiManager.isStaApConcurrencySupported()
-    }
+    fun isStaApConcurrencySupported() = wifiManager.isStaApConcurrencySupported()
 
     @Rpc(description = "Request cellular connection and ensure it is the default network.")
     fun requestCellularAndEnsureDefault() {
         ctsNetUtils.disableWifi()
-        val network = ctsNetUtils.connectToCell()
+        val network = cbHelper.requestCell()
         ctsNetUtils.expectNetworkIsSystemDefault(network)
     }
 
-    @Rpc(description = "Unrequest cellular connection.")
-    fun unrequestCellular() {
-        ctsNetUtils.disconnectFromCell()
+    @Rpc(description = "Unregister all connections.")
+    fun unregisterAll() {
+        cbHelper.unregisterAll()
     }
 
     @Rpc(description = "Ensure any wifi is connected and is the default network.")
@@ -84,10 +92,8 @@
     // Suppress warning because WifiManager methods to connect to a config are
     // documented not to be deprecated for privileged users.
     @Suppress("DEPRECATION")
-    fun connectToWifi(ssid: String, passphrase: String, requireValidation: Boolean): Network {
+    fun connectToWifi(ssid: String, passphrase: String): Long {
         val specifier = WifiNetworkSpecifier.Builder()
-            .setSsid(ssid)
-            .setWpa2Passphrase(passphrase)
             .setBand(ScanResult.WIFI_BAND_24_GHZ)
             .build()
         val wifiConfig = WifiConfiguration()
@@ -98,27 +104,28 @@
         wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP)
         wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP)
 
-        // Register network callback for the specific wifi.
+        // Add the test configuration and connect to it.
+        val connectUtil = ConnectUtil(context)
+        connectUtil.connectToWifiConfig(wifiConfig)
+
+        // Implement manual SSID matching. Specifying the SSID in
+        // NetworkSpecifier is ineffective
+        // (see WifiNetworkAgentSpecifier#canBeSatisfiedBy for details).
+        // Note that holding permission is necessary when waiting for
+        // the callbacks. The handler thread checks permission; if
+        // it's not present, the SSID will be redacted.
         val networkCallback = TestableNetworkCallback()
-        val wifiRequest = NetworkRequest.Builder().addTransportType(TRANSPORT_WIFI)
-            .setNetworkSpecifier(specifier)
-            .build()
-        cm.registerNetworkCallback(wifiRequest, networkCallback)
-
-        try {
-            // Add the test configuration and connect to it.
-            val connectUtil = ConnectUtil(context)
-            connectUtil.connectToWifiConfig(wifiConfig)
-
-            val event = networkCallback.expect<Available>()
-            if (requireValidation) {
-                networkCallback.eventuallyExpect<CapabilitiesChanged> {
-                    it.caps.hasCapability(NET_CAPABILITY_VALIDATED)
-                }
-            }
-            return event.network
-        } finally {
-            cm.unregisterNetworkCallback(networkCallback)
+        val wifiRequest = NetworkRequest.Builder().addTransportType(TRANSPORT_WIFI).build()
+        return runAsShell(NETWORK_SETTINGS) {
+            // Register the network callback is needed here.
+            // This is to avoid the race condition where callback is fired before
+            // acquiring permission.
+            networkCallbackRule.registerNetworkCallback(wifiRequest, networkCallback)
+            return@runAsShell networkCallback.eventuallyExpect<CapabilitiesChanged> {
+                // Remove double quotes.
+                val ssidFromCaps = (WifiInfo::sanitizeSsid)(it.caps.ssid)
+                ssidFromCaps == ssid && it.caps.hasCapability(NET_CAPABILITY_VALIDATED)
+            }.network.networkHandle
         }
     }
 
diff --git a/tests/cts/multidevices/snippet/MdnsMultiDevicesSnippet.kt b/tests/cts/multidevices/snippet/MdnsMultiDevicesSnippet.kt
new file mode 100644
index 0000000..1b288df
--- /dev/null
+++ b/tests/cts/multidevices/snippet/MdnsMultiDevicesSnippet.kt
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.snippet.connectivity
+
+import android.net.nsd.NsdManager
+import android.net.nsd.NsdServiceInfo
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.testutils.NsdDiscoveryRecord
+import com.android.testutils.NsdDiscoveryRecord.DiscoveryEvent.DiscoveryStopped
+import com.android.testutils.NsdRegistrationRecord
+import com.android.testutils.NsdRegistrationRecord.RegistrationEvent.ServiceRegistered
+import com.android.testutils.NsdRegistrationRecord.RegistrationEvent.ServiceUnregistered
+import com.android.testutils.NsdResolveRecord
+import com.android.testutils.NsdResolveRecord.ResolveEvent.ServiceResolved
+import com.google.android.mobly.snippet.Snippet
+import com.google.android.mobly.snippet.rpc.Rpc
+import kotlin.test.assertEquals
+import org.junit.Assert.assertArrayEquals
+
+private const val SERVICE_NAME = "MultiDevicesTest"
+private const val SERVICE_TYPE = "_multi_devices._tcp"
+private const val SERVICE_ATTRIBUTES_KEY = "key"
+private const val SERVICE_ATTRIBUTES_VALUE = "value"
+private const val SERVICE_PORT = 12345
+private const val REGISTRATION_TIMEOUT_MS = 10_000L
+
+class MdnsMultiDevicesSnippet : Snippet {
+    private val context = InstrumentationRegistry.getInstrumentation().getTargetContext()
+    private val nsdManager = context.getSystemService(NsdManager::class.java)!!
+    private val registrationRecord = NsdRegistrationRecord()
+    private val discoveryRecord = NsdDiscoveryRecord()
+    private val resolveRecord = NsdResolveRecord()
+
+    @Rpc(description = "Register a mDns service")
+    fun registerMDnsService() {
+        val info = NsdServiceInfo()
+        info.setServiceName(SERVICE_NAME)
+        info.setServiceType(SERVICE_TYPE)
+        info.setPort(SERVICE_PORT)
+        info.setAttribute(SERVICE_ATTRIBUTES_KEY, SERVICE_ATTRIBUTES_VALUE)
+        nsdManager.registerService(info, NsdManager.PROTOCOL_DNS_SD, registrationRecord)
+        registrationRecord.expectCallback<ServiceRegistered>(REGISTRATION_TIMEOUT_MS)
+    }
+
+    @Rpc(description = "Unregister a mDns service")
+    fun unregisterMDnsService() {
+        nsdManager.unregisterService(registrationRecord)
+        registrationRecord.expectCallback<ServiceUnregistered>()
+    }
+
+    @Rpc(description = "Ensure the discovery and resolution of the mDNS service")
+    // Suppress the warning, as the NsdManager#resolveService() method is deprecated.
+    @Suppress("DEPRECATION")
+    fun ensureMDnsServiceDiscoveryAndResolution() {
+        // Discover a mDns service that matches the test service
+        nsdManager.discoverServices(SERVICE_TYPE, NsdManager.PROTOCOL_DNS_SD, discoveryRecord)
+        val info = discoveryRecord.waitForServiceDiscovered(SERVICE_NAME, SERVICE_TYPE)
+        // Resolve the retrieved mDns service.
+        nsdManager.resolveService(info, resolveRecord)
+        val serviceResolved = resolveRecord.expectCallbackEventually<ServiceResolved>()
+        serviceResolved.serviceInfo.let {
+            assertEquals(SERVICE_NAME, it.serviceName)
+            assertEquals(".$SERVICE_TYPE", it.serviceType)
+            assertEquals(SERVICE_PORT, it.port)
+            assertEquals(1, it.attributes.size)
+            assertArrayEquals(
+                    SERVICE_ATTRIBUTES_VALUE.encodeToByteArray(),
+                    it.attributes[SERVICE_ATTRIBUTES_KEY]
+            )
+        }
+    }
+
+    @Rpc(description = "Stop discovery")
+    fun stopMDnsServiceDiscovery() {
+        nsdManager.stopServiceDiscovery(discoveryRecord)
+        discoveryRecord.expectCallbackEventually<DiscoveryStopped>()
+    }
+}
diff --git a/tests/cts/multidevices/utils/mdns_utils.py b/tests/cts/multidevices/utils/mdns_utils.py
new file mode 100644
index 0000000..ec1fea0
--- /dev/null
+++ b/tests/cts/multidevices/utils/mdns_utils.py
@@ -0,0 +1,42 @@
+#  Copyright (C) 2024 The Android Open Source Project
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+from mobly.controllers import android_device
+
+
+def register_mdns_service_and_discover_resolve(
+    advertising_device: android_device, discovery_device: android_device
+) -> None:
+  """Test mdns advertising, discovery and resolution
+
+  One device registers an mDNS service, and another device discovers and
+  resolves that service.
+  """
+  advertising = advertising_device.connectivity_multi_devices_snippet
+  discovery = discovery_device.connectivity_multi_devices_snippet
+
+  # Register a mDns service
+  advertising.registerMDnsService()
+
+  # Ensure the discovery and resolution of the mDNS service
+  discovery.ensureMDnsServiceDiscoveryAndResolution()
+
+
+def cleanup_mdns_service(
+    advertising_device: android_device, discovery_device: android_device
+) -> None:
+  # Unregister the mDns service
+  advertising_device.connectivity_multi_devices_snippet.unregisterMDnsService()
+  # Stop discovery
+  discovery_device.connectivity_multi_devices_snippet.stopMDnsServiceDiscovery()
diff --git a/tests/cts/multidevices/utils/tether_utils.py b/tests/cts/multidevices/utils/tether_utils.py
new file mode 100644
index 0000000..702b596
--- /dev/null
+++ b/tests/cts/multidevices/utils/tether_utils.py
@@ -0,0 +1,110 @@
+#  Copyright (C) 2024 The Android Open Source Project
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import base64
+import uuid
+
+from mobly import asserts
+from mobly.controllers import android_device
+
+
+class UpstreamType:
+  NONE = 0
+  CELLULAR = 1
+  WIFI = 2
+
+
+def generate_uuid32_base64() -> str:
+  """Generates a UUID32 and encodes it in Base64.
+
+  Returns:
+      str: The Base64-encoded UUID32 string. Which is 22 characters.
+  """
+  # Strip padding characters to make it safer for hotspot name length limit.
+  return base64.b64encode(uuid.uuid1().bytes).decode("utf-8").strip("=")
+
+
+def assume_hotspot_test_preconditions(
+    server_device: android_device,
+    client_device: android_device,
+    upstream_type: UpstreamType,
+) -> None:
+  server = server_device.connectivity_multi_devices_snippet
+  client = client_device.connectivity_multi_devices_snippet
+
+  # Assert pre-conditions specific to each upstream type.
+  asserts.skip_if(not client.hasWifiFeature(), "Client requires Wifi feature")
+  asserts.skip_if(
+      not server.hasHotspotFeature(), "Server requires hotspot feature"
+  )
+  if upstream_type == UpstreamType.CELLULAR:
+    asserts.skip_if(
+        not server.hasTelephonyFeature(), "Server requires Telephony feature"
+    )
+  elif upstream_type == UpstreamType.WIFI:
+    asserts.skip_if(
+        not server.isStaApConcurrencySupported(),
+        "Server requires Wifi AP + STA concurrency",
+    )
+  elif upstream_type == UpstreamType.NONE:
+    pass
+  else:
+    raise ValueError(f"Invalid upstream type: {upstream_type}")
+
+
+def setup_hotspot_and_client_for_upstream_type(
+    server_device: android_device,
+    client_device: android_device,
+    upstream_type: UpstreamType,
+) -> (str, int):
+  """Setup the hotspot with a connected client with the specified upstream type.
+
+  This creates a hotspot, make the client connect
+  to it, and verify the packet is forwarded by the hotspot.
+  And returns interface name of both if successful.
+  """
+  server = server_device.connectivity_multi_devices_snippet
+  client = client_device.connectivity_multi_devices_snippet
+
+  if upstream_type == UpstreamType.CELLULAR:
+    server.requestCellularAndEnsureDefault()
+  elif upstream_type == UpstreamType.WIFI:
+    server.ensureWifiIsDefault()
+  elif upstream_type == UpstreamType.NONE:
+    pass
+  else:
+    raise ValueError(f"Invalid upstream type: {upstream_type}")
+
+  # Generate ssid/passphrase with random characters to make sure nearby devices won't
+  # connect unexpectedly. Note that total length of ssid cannot go over 32.
+  test_ssid = "HOTSPOT-" + generate_uuid32_base64()
+  test_passphrase = generate_uuid32_base64()
+
+  # Create a hotspot with fixed SSID and password.
+  hotspot_interface = server.startHotspot(test_ssid, test_passphrase)
+
+  # Make the client connects to the hotspot.
+  client_network = client.connectToWifi(test_ssid, test_passphrase)
+
+  return hotspot_interface, client_network
+
+
+def cleanup_tethering_for_upstream_type(
+    server_device: android_device, upstream_type: UpstreamType
+) -> None:
+  server = server_device.connectivity_multi_devices_snippet
+  if upstream_type == UpstreamType.CELLULAR:
+    server.unregisterAll()
+  # Teardown the hotspot.
+  server.stopAllTethering()
diff --git a/tests/cts/net/Android.bp b/tests/cts/net/Android.bp
index 074c587..ae85701 100644
--- a/tests/cts/net/Android.bp
+++ b/tests/cts/net/Android.bp
@@ -46,6 +46,7 @@
     ],
     jarjar_rules: "jarjar-rules-shared.txt",
     static_libs: [
+        "ApfGeneratorLib",
         "bouncycastle-unbundled",
         "FrameworksNetCommonTests",
         "core-tests-support",
@@ -179,4 +180,5 @@
         "cts",
         "general-tests",
     ],
+    sdk_version: "test_current",
 }
diff --git a/tests/cts/net/AndroidTestTemplate.xml b/tests/cts/net/AndroidTestTemplate.xml
index 38f26d8..077c3ef 100644
--- a/tests/cts/net/AndroidTestTemplate.xml
+++ b/tests/cts/net/AndroidTestTemplate.xml
@@ -24,6 +24,11 @@
     <option name="config-descriptor:metadata" key="mainline-param" value="CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk" />
     <option name="config-descriptor:metadata" key="mainline-param" value="com.google.android.tethering.apex" />
     <option name="not-shardable" value="true" />
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.DynamicConfigPusher">
+        <option name="target" value="device" />
+        <option name="config-filename" value="{MODULE}" />
+        <option name="version" value="1.0" />
+    </target_preparer>
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true" />
         <option name="test-file-name" value="{MODULE}.apk" />
@@ -38,6 +43,7 @@
         <option name="runtime-hint" value="9m4s" />
         <option name="hidden-api-checks" value="false" />
         <option name="isolated-storage" value="false" />
+        <option name="instrumentation-arg" key="test-module-name" value="{MODULE}" />
         <!-- Test filter that allows test APKs to select which tests they want to run by annotating
              those tests with an annotation matching the name of the APK.
 
diff --git a/Cronet/tests/cts/assets/html/hello_world.html b/tests/cts/net/DynamicConfig.xml
similarity index 65%
rename from Cronet/tests/cts/assets/html/hello_world.html
rename to tests/cts/net/DynamicConfig.xml
index ea62ce2..af019c2 100644
--- a/Cronet/tests/cts/assets/html/hello_world.html
+++ b/tests/cts/net/DynamicConfig.xml
@@ -1,5 +1,5 @@
 <!--
-  ~ Copyright (C) 2022 The Android Open Source Project
+  ~ Copyright (C) 2024 The Android Open Source Project
   ~
   ~ Licensed under the Apache License, Version 2.0 (the "License");
   ~ you may not use this file except in compliance with the License.
@@ -14,11 +14,11 @@
   ~ limitations under the License.
   -->
 
-<html>
-<head>
-    <title>hello world</title>
-</head>
-<body>
-<h3>hello world</h3><br>
-</body>
-</html>
\ No newline at end of file
+<dynamicConfig>
+    <entry key="remote_config_required">
+        <value>false</value>
+    </entry>
+    <entry key="IP_ADDRESS_ECHO_URL">
+        <value>https://google-ipv6test.appspot.com/ip.js?fmt=text</value>
+    </entry>
+</dynamicConfig>
diff --git a/tests/cts/net/api23Test/Android.bp b/tests/cts/net/api23Test/Android.bp
index 2ec3a70..587d5a5 100644
--- a/tests/cts/net/api23Test/Android.bp
+++ b/tests/cts/net/api23Test/Android.bp
@@ -56,4 +56,5 @@
         ":CtsNetTestAppForApi23",
     ],
     per_testcase_directory: true,
+    sdk_version: "test_current",
 }
diff --git a/tests/cts/net/native/dns/Android.bp b/tests/cts/net/native/dns/Android.bp
index 8e24fba..de4a3bf 100644
--- a/tests/cts/net/native/dns/Android.bp
+++ b/tests/cts/net/native/dns/Android.bp
@@ -3,6 +3,11 @@
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
+filegroup {
+    name: "dns_async_test_default_map",
+    srcs: ["dns_async_test_default.map"],
+}
+
 cc_defaults {
     name: "dns_async_defaults",
 
@@ -20,6 +25,14 @@
     srcs: [
         "NativeDnsAsyncTest.cpp",
     ],
+    // This test runs on older platform versions, so many libraries (such as libbase and libc++)
+    // need to be linked statically. The test also needs to be linked with a version script to
+    // ensure that the statically-linked library isn't exported from the executable, where it
+    // would override the shared libraries that the platform itself uses.
+    // See http://b/333438055 for an example of what goes wrong when libc++ is partially exported
+    // from an executable.
+    version_script: ":dns_async_test_default_map",
+    stl: "libc++_static",
     shared_libs: [
         "libandroid",
         "liblog",
diff --git a/tests/cts/net/native/dns/dns_async_test_default.map b/tests/cts/net/native/dns/dns_async_test_default.map
new file mode 100644
index 0000000..e342e43
--- /dev/null
+++ b/tests/cts/net/native/dns/dns_async_test_default.map
@@ -0,0 +1,20 @@
+#
+# Copyright (C) 2024 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{
+  local:
+    *;
+};
diff --git a/tests/cts/net/native/src/BpfCompatTest.cpp b/tests/cts/net/native/src/BpfCompatTest.cpp
index 5c02b0d..e2fdd3d 100644
--- a/tests/cts/net/native/src/BpfCompatTest.cpp
+++ b/tests/cts/net/native/src/BpfCompatTest.cpp
@@ -27,35 +27,32 @@
 
 using namespace android::bpf;
 
-void doBpfStructSizeTest(const char *elfPath) {
+void doBpfStructSizeTest(const char *elfPath, unsigned mapSz, unsigned progSz) {
   std::ifstream elfFile(elfPath, std::ios::in | std::ios::binary);
   ASSERT_TRUE(elfFile.is_open());
 
-  if (android::modules::sdklevel::IsAtLeastU()) {
-    EXPECT_EQ(120, readSectionUint("size_of_bpf_map_def", elfFile, 0));
-    EXPECT_EQ(92, readSectionUint("size_of_bpf_prog_def", elfFile, 0));
-  } else if (android::modules::sdklevel::IsAtLeastT()) {
-    EXPECT_EQ(116, readSectionUint("size_of_bpf_map_def", elfFile, 0));
-    EXPECT_EQ(92, readSectionUint("size_of_bpf_prog_def", elfFile, 0));
-  } else {
-    EXPECT_EQ(48, readSectionUint("size_of_bpf_map_def", elfFile, 0));
-    EXPECT_EQ(28, readSectionUint("size_of_bpf_prog_def", elfFile, 0));
-  }
-}
-
-TEST(BpfTest, bpfStructSizeTestPreT) {
-  if (android::modules::sdklevel::IsAtLeastT()) GTEST_SKIP() << "T+ device.";
-  doBpfStructSizeTest("/system/etc/bpf/netd.o");
-  doBpfStructSizeTest("/system/etc/bpf/clatd.o");
+  EXPECT_EQ(mapSz, readSectionUint("size_of_bpf_map_def", elfFile, 0));
+  EXPECT_EQ(progSz, readSectionUint("size_of_bpf_prog_def", elfFile, 0));
 }
 
 TEST(BpfTest, bpfStructSizeTest) {
-  if (android::modules::sdklevel::IsAtLeastU()) {
-      doBpfStructSizeTest("/system/etc/bpf/gpuMem.o");
-      doBpfStructSizeTest("/system/etc/bpf/timeInState.o");
+  if (android::modules::sdklevel::IsAtLeastV()) {
+    // Due to V+ using mainline netbpfload, there is no longer a need to
+    // enforce consistency between platform and mainline bpf .o files.
+    GTEST_SKIP() << "V+ device.";
+  } else if (android::modules::sdklevel::IsAtLeastU()) {
+    doBpfStructSizeTest("/system/etc/bpf/gpuMem.o", 120, 92);
+    doBpfStructSizeTest("/system/etc/bpf/timeInState.o", 120, 92);
+  } else if (android::modules::sdklevel::IsAtLeastT()) {
+    doBpfStructSizeTest("/system/etc/bpf/gpu_mem.o", 116, 92);
+    doBpfStructSizeTest("/system/etc/bpf/time_in_state.o", 116, 92);
+  } else if (android::modules::sdklevel::IsAtLeastS()) {
+    // These files were moved to mainline in Android T
+    doBpfStructSizeTest("/system/etc/bpf/netd.o", 48, 28);
+    doBpfStructSizeTest("/system/etc/bpf/clatd.o", 48, 28);
   } else {
-      doBpfStructSizeTest("/system/etc/bpf/gpu_mem.o");
-      doBpfStructSizeTest("/system/etc/bpf/time_in_state.o");
+    // There is no mainline bpf code before S.
+    GTEST_SKIP() << "R- device.";
   }
 }
 
diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
new file mode 100644
index 0000000..f6cbeeb
--- /dev/null
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -0,0 +1,625 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// ktlint does not allow annotating function argument literals inline. Disable the specific rule
+// since this negatively affects readability.
+@file:Suppress("ktlint:standard:comment-wrapping")
+
+package android.net.cts
+
+import android.Manifest.permission.WRITE_DEVICE_CONFIG
+import android.content.pm.PackageManager.FEATURE_WIFI
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import android.net.apf.ApfCapabilities
+import android.net.apf.ApfConstants.ETH_ETHERTYPE_OFFSET
+import android.net.apf.ApfConstants.ICMP6_TYPE_OFFSET
+import android.net.apf.ApfConstants.IPV6_NEXT_HEADER_OFFSET
+import android.net.apf.ApfCounterTracker
+import android.net.apf.ApfCounterTracker.Counter.FILTER_AGE_16384THS
+import android.net.apf.ApfV4Generator
+import android.net.apf.ApfV4GeneratorBase
+import android.net.apf.ApfV6Generator
+import android.net.apf.BaseApfGenerator
+import android.net.apf.BaseApfGenerator.MemorySlot
+import android.net.apf.BaseApfGenerator.Register.R0
+import android.net.apf.BaseApfGenerator.Register.R1
+import android.os.Build
+import android.os.Handler
+import android.os.HandlerThread
+import android.os.PowerManager
+import android.platform.test.annotations.AppModeFull
+import android.provider.DeviceConfig
+import android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY
+import android.system.Os
+import android.system.OsConstants
+import android.system.OsConstants.AF_INET6
+import android.system.OsConstants.ETH_P_IPV6
+import android.system.OsConstants.IPPROTO_ICMPV6
+import android.system.OsConstants.SOCK_DGRAM
+import android.system.OsConstants.SOCK_NONBLOCK
+import android.util.Log
+import androidx.test.filters.RequiresDevice
+import androidx.test.platform.app.InstrumentationRegistry
+import com.android.compatibility.common.util.PropertyUtil.getFirstApiLevel
+import com.android.compatibility.common.util.PropertyUtil.getVsrApiLevel
+import com.android.compatibility.common.util.SystemUtil.runShellCommand
+import com.android.compatibility.common.util.SystemUtil.runShellCommandOrThrow
+import com.android.compatibility.common.util.VsrTest
+import com.android.internal.util.HexDump
+import com.android.net.module.util.PacketReader
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.NetworkStackModuleTest
+import com.android.testutils.RecorderCallback.CallbackEntry.Available
+import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
+import com.android.testutils.SkipPresubmit
+import com.android.testutils.TestableNetworkCallback
+import com.android.testutils.runAsShell
+import com.android.testutils.waitForIdle
+import com.google.common.truth.Expect
+import com.google.common.truth.Truth.assertThat
+import com.google.common.truth.Truth.assertWithMessage
+import com.google.common.truth.TruthJUnit.assume
+import java.io.FileDescriptor
+import java.net.InetSocketAddress
+import java.nio.ByteBuffer
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.TimeUnit
+import java.util.concurrent.TimeoutException
+import kotlin.random.Random
+import kotlin.test.assertFailsWith
+import kotlin.test.assertNotNull
+import org.junit.After
+import org.junit.AfterClass
+import org.junit.Before
+import org.junit.BeforeClass
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TAG = "ApfIntegrationTest"
+private const val TIMEOUT_MS = 2000L
+private const val APF_NEW_RA_FILTER_VERSION = "apf_new_ra_filter_version"
+private const val POLLING_INTERVAL_MS: Int = 100
+private const val RCV_BUFFER_SIZE = 1480
+private const val PING_HEADER_LENGTH = 8
+
+@AppModeFull(reason = "CHANGE_NETWORK_STATE permission can't be granted to instant apps")
+@RunWith(DevSdkIgnoreRunner::class)
+@RequiresDevice
+@NetworkStackModuleTest
+// ByteArray.toHexString is experimental API
+@kotlin.ExperimentalStdlibApi
+class ApfIntegrationTest {
+    companion object {
+        private val PING_DESTINATION = InetSocketAddress("2001:4860:4860::8888", 0)
+
+        private val context = InstrumentationRegistry.getInstrumentation().context
+        private val powerManager = context.getSystemService(PowerManager::class.java)!!
+        private val wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG)
+
+        fun pollingCheck(condition: () -> Boolean, timeout_ms: Int): Boolean {
+            var polling_time = 0
+            do {
+                Thread.sleep(POLLING_INTERVAL_MS.toLong())
+                polling_time += POLLING_INTERVAL_MS
+                if (condition()) return true
+            } while (polling_time < timeout_ms)
+            return false
+        }
+
+        fun turnScreenOff() {
+            if (!wakeLock.isHeld()) wakeLock.acquire()
+            runShellCommandOrThrow("input keyevent KEYCODE_SLEEP")
+            val result = pollingCheck({ !powerManager.isInteractive() }, timeout_ms = 2000)
+            assertThat(result).isTrue()
+        }
+
+        fun turnScreenOn() {
+            if (wakeLock.isHeld()) wakeLock.release()
+            runShellCommandOrThrow("input keyevent KEYCODE_WAKEUP")
+            val result = pollingCheck({ powerManager.isInteractive() }, timeout_ms = 2000)
+            assertThat(result).isTrue()
+        }
+
+        @BeforeClass
+        @JvmStatic
+        @Suppress("ktlint:standard:no-multi-spaces")
+        fun setupOnce() {
+            // TODO: assertions thrown in @BeforeClass / @AfterClass are not well supported in the
+            // test infrastructure. Consider saving excepion and throwing it in setUp().
+            // APF must run when the screen is off and the device is not interactive.
+            turnScreenOff()
+            // Wait for APF to become active.
+            Thread.sleep(1000)
+            // TODO: check that there is no active wifi network. Otherwise, ApfFilter has already been
+            // created.
+            // APF adb cmds are only implemented in ApfFilter.java. Enable experiment to prevent
+            // LegacyApfFilter.java from being used.
+            runAsShell(WRITE_DEVICE_CONFIG) {
+                DeviceConfig.setProperty(
+                        NAMESPACE_CONNECTIVITY,
+                        APF_NEW_RA_FILTER_VERSION,
+                        "1",  // value => force enabled
+                        false // makeDefault
+                )
+            }
+        }
+
+        @AfterClass
+        @JvmStatic
+        fun tearDownOnce() {
+            turnScreenOn()
+        }
+    }
+
+    class Icmp6PacketReader(
+            handler: Handler,
+            private val network: Network
+    ) : PacketReader(handler, RCV_BUFFER_SIZE) {
+        private var sockFd: FileDescriptor? = null
+        private var futureReply: CompletableFuture<ByteArray>? = null
+
+        override fun createFd(): FileDescriptor {
+            // sockFd is closed by calling super.stop()
+            val sock = Os.socket(AF_INET6, SOCK_DGRAM or SOCK_NONBLOCK, IPPROTO_ICMPV6)
+            // APF runs only on WiFi, so make sure the socket is bound to the right network.
+            network.bindSocket(sock)
+            sockFd = sock
+            return sock
+        }
+
+        override fun handlePacket(recvbuf: ByteArray, length: Int) {
+            // If zero-length or Type is not echo reply: ignore.
+            if (length == 0 || recvbuf[0] != 0x81.toByte()) {
+                return
+            }
+            // Only copy the ping data and complete the future.
+            val result = recvbuf.sliceArray(8..<length)
+            Log.i(TAG, "Received ping reply: ${result.toHexString()}")
+            futureReply!!.complete(recvbuf.sliceArray(8..<length))
+        }
+
+        fun sendPing(data: ByteArray, payloadSize: Int) {
+            require(data.size == payloadSize)
+
+            // rfc4443#section-4.1: Echo Request Message
+            //   0                   1                   2                   3
+            //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+            //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+            //  |     Type      |     Code      |          Checksum             |
+            //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+            //  |           Identifier          |        Sequence Number        |
+            //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+            //  |     Data ...
+            //  +-+-+-+-+-
+            val icmp6Header = byteArrayOf(0x80.toByte(), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
+            val packet = icmp6Header + data
+            Log.i(TAG, "Sent ping: ${packet.toHexString()}")
+            futureReply = CompletableFuture<ByteArray>()
+            Os.sendto(sockFd!!, packet, 0, packet.size, 0, PING_DESTINATION)
+        }
+
+        fun expectPingReply(): ByteArray {
+            return futureReply!!.get(TIMEOUT_MS, TimeUnit.MILLISECONDS)
+        }
+
+        fun expectPingDropped() {
+            assertFailsWith(TimeoutException::class) {
+                futureReply!!.get(TIMEOUT_MS, TimeUnit.MILLISECONDS)
+            }
+        }
+
+        override fun start(): Boolean {
+            // Ignore the fact start() could return false or throw an exception.
+            handler.post({ super.start() })
+            handler.waitForIdle(TIMEOUT_MS)
+            return true
+        }
+
+        override fun stop() {
+            handler.post({ super.stop() })
+            handler.waitForIdle(TIMEOUT_MS)
+        }
+    }
+
+    @get:Rule val ignoreRule = DevSdkIgnoreRule()
+    @get:Rule val expect = Expect.create()
+
+    private val cm by lazy { context.getSystemService(ConnectivityManager::class.java)!! }
+    private val pm by lazy { context.packageManager }
+    private lateinit var network: Network
+    private lateinit var ifname: String
+    private lateinit var networkCallback: TestableNetworkCallback
+    private lateinit var caps: ApfCapabilities
+    private val handlerThread = HandlerThread("$TAG handler thread").apply { start() }
+    private val handler = Handler(handlerThread.looper)
+    private lateinit var packetReader: Icmp6PacketReader
+
+    fun getApfCapabilities(): ApfCapabilities {
+        val caps = runShellCommand("cmd network_stack apf $ifname capabilities").trim()
+        if (caps.isEmpty()) {
+            return ApfCapabilities(0, 0, 0)
+        }
+        val (version, maxLen, packetFormat) = caps.split(",").map { it.toInt() }
+        return ApfCapabilities(version, maxLen, packetFormat)
+    }
+
+    @Before
+    fun setUp() {
+        assume().that(pm.hasSystemFeature(FEATURE_WIFI)).isTrue()
+
+        networkCallback = TestableNetworkCallback()
+        cm.requestNetwork(
+                NetworkRequest.Builder()
+                        .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
+                        .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+                        .build(),
+                networkCallback
+        )
+        network = networkCallback.expect<Available>().network
+        networkCallback.eventuallyExpect<LinkPropertiesChanged>(TIMEOUT_MS) {
+            ifname = assertNotNull(it.lp.interfaceName)
+            true
+        }
+        // It's possible the device does not support APF, in which case this command will not be
+        // successful. Ignore the error as testApfCapabilities() already asserts APF support on the
+        // respective VSR releases and all other tests are based on the capabilities indicated.
+        runShellCommand("cmd network_stack apf $ifname pause")
+        caps = getApfCapabilities()
+
+        packetReader = Icmp6PacketReader(handler, network)
+        packetReader.start()
+    }
+
+    @After
+    fun tearDown() {
+        if (::packetReader.isInitialized) {
+            packetReader.stop()
+        }
+        handlerThread.quitSafely()
+        handlerThread.join()
+
+        if (::ifname.isInitialized) {
+            runShellCommand("cmd network_stack apf $ifname resume")
+        }
+        if (::networkCallback.isInitialized) {
+            cm.unregisterNetworkCallback(networkCallback)
+        }
+    }
+
+    @VsrTest(
+        requirements = ["VSR-5.3.12-001", "VSR-5.3.12-003", "VSR-5.3.12-004", "VSR-5.3.12-009",
+            "VSR-5.3.12-012"]
+    )
+    @Test
+    fun testApfCapabilities() {
+        // APF became mandatory in Android 14 VSR.
+        assume().that(getVsrApiLevel()).isAtLeast(34)
+
+        // ApfFilter does not support anything but ARPHRD_ETHER.
+        assertThat(caps.apfPacketFormat).isEqualTo(OsConstants.ARPHRD_ETHER)
+
+        // DEVICEs launching with Android 14 with CHIPSETs that set ro.board.first_api_level to 34:
+        // - [GMS-VSR-5.3.12-003] MUST return 4 or higher as the APF version number from calls to
+        //   the getApfPacketFilterCapabilities HAL method.
+        // - [GMS-VSR-5.3.12-004] MUST indicate at least 1024 bytes of usable memory from calls to
+        //   the getApfPacketFilterCapabilities HAL method.
+        // TODO: check whether above text should be changed "34 or higher"
+        assertThat(caps.apfVersionSupported).isAtLeast(4)
+        assertThat(caps.maximumApfProgramSize).isAtLeast(1024)
+
+        if (caps.apfVersionSupported > 4) {
+            assertThat(caps.maximumApfProgramSize).isAtLeast(2048)
+            assertThat(caps.apfVersionSupported).isEqualTo(6000) // v6.0000
+        }
+
+        // DEVICEs launching with Android 15 (AOSP experimental) or higher with CHIPSETs that set
+        // ro.board.first_api_level or ro.board.api_level to 202404 or higher:
+        // - [GMS-VSR-5.3.12-009] MUST indicate at least 2048 bytes of usable memory from calls to
+        //   the getApfPacketFilterCapabilities HAL method.
+        if (getVsrApiLevel() >= 202404) {
+            assertThat(caps.maximumApfProgramSize).isAtLeast(2048)
+        }
+    }
+
+    // APF is backwards compatible, i.e. a v6 interpreter supports both v2 and v4 functionality.
+    fun assumeApfVersionSupportAtLeast(version: Int) {
+        assume().that(caps.apfVersionSupported).isAtLeast(version)
+    }
+
+    fun installProgram(bytes: ByteArray) {
+        val prog = bytes.toHexString()
+        val result = runShellCommandOrThrow("cmd network_stack apf $ifname install $prog").trim()
+        // runShellCommandOrThrow only throws on S+.
+        assertThat(result).isEqualTo("success")
+    }
+
+    fun readProgram(): ByteArray {
+        val progHexString = runShellCommandOrThrow("cmd network_stack apf $ifname read").trim()
+        // runShellCommandOrThrow only throws on S+.
+        assertThat(progHexString).isNotEmpty()
+        return HexDump.hexStringToByteArray(progHexString)
+    }
+
+    @VsrTest(
+            requirements = ["VSR-5.3.12-007", "VSR-5.3.12-008", "VSR-5.3.12-010", "VSR-5.3.12-011"]
+    )
+    @SkipPresubmit(reason = "This test takes longer than 1 minute, do not run it on presubmit.")
+    // APF integration is mostly broken before V, only run the full read / write test on V+.
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    // Increase timeout for test to 15 minutes to accommodate device with large APF RAM.
+    @Test(timeout = 15 * 60 * 1000)
+    fun testReadWriteProgram() {
+        assumeApfVersionSupportAtLeast(4)
+
+        val minReadWriteSize = if (getFirstApiLevel() >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            2
+        } else {
+            8
+        }
+
+        // The minReadWriteSize is 2 bytes. The first byte always stays PASS.
+        val program = ByteArray(caps.maximumApfProgramSize)
+        for (i in caps.maximumApfProgramSize downTo minReadWriteSize) {
+            // Randomize bytes in range [1, i). And install first [0, i) bytes of program.
+            // Note that only the very first instruction (PASS) is valid APF bytecode.
+            Random.nextBytes(program, 1 /* fromIndex */, i /* toIndex */)
+            installProgram(program.sliceArray(0..<i))
+
+            // Compare entire memory region.
+            val readResult = readProgram()
+            val errMsg = """
+                read/write $i byte prog failed.
+                In APFv4, the APF memory region MUST NOT be modified or cleared except by APF
+                instructions executed by the interpreter or by Android OS calls to the HAL. If this
+                requirement cannot be met, the firmware cannot declare that it supports APFv4 and
+                it should declare that it only supports APFv3(if counter is partially supported) or
+                APFv2.
+            """.trimIndent()
+            assertWithMessage(errMsg).that(readResult).isEqualTo(program)
+        }
+    }
+
+    fun ApfV4GeneratorBase<*>.addPassIfNotIcmpv6EchoReply() {
+        // If not IPv6 -> PASS
+        addLoad16(R0, ETH_ETHERTYPE_OFFSET)
+        addJumpIfR0NotEquals(ETH_P_IPV6.toLong(), BaseApfGenerator.PASS_LABEL)
+
+        // If not ICMPv6 -> PASS
+        addLoad8(R0, IPV6_NEXT_HEADER_OFFSET)
+        addJumpIfR0NotEquals(IPPROTO_ICMPV6.toLong(), BaseApfGenerator.PASS_LABEL)
+
+        // If not echo reply -> PASS
+        addLoad8(R0, ICMP6_TYPE_OFFSET)
+        addJumpIfR0NotEquals(0x81, BaseApfGenerator.PASS_LABEL)
+    }
+
+    // APF integration is mostly broken before V
+    @VsrTest(requirements = ["VSR-5.3.12-002", "VSR-5.3.12-005"])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    fun testDropPingReply() {
+        // VSR-14 mandates APF to be turned on when the screen is off and the Wi-Fi link
+        // is idle or traffic is less than 10 Mbps. Before that, we don't mandate when the APF
+        // should be turned on.
+        assume().that(getVsrApiLevel()).isAtLeast(34)
+        assumeApfVersionSupportAtLeast(4)
+
+        // clear any active APF filter
+        var gen = ApfV4Generator(
+                caps.apfVersionSupported,
+                caps.maximumApfProgramSize,
+                caps.maximumApfProgramSize
+        ).addPass()
+        installProgram(gen.generate())
+        readProgram() // wait for install completion
+
+        // Assert that initial ping does not get filtered.
+        val payloadSize = if (getFirstApiLevel() >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            68
+        } else {
+            4
+        }
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
+        assertThat(packetReader.expectPingReply()).isEqualTo(data)
+
+        // Generate an APF program that drops the next ping
+        gen = ApfV4Generator(
+                caps.apfVersionSupported,
+                caps.maximumApfProgramSize,
+                caps.maximumApfProgramSize
+        )
+
+        // If not ICMPv6 Echo Reply -> PASS
+        gen.addPassIfNotIcmpv6EchoReply()
+
+        // if not data matches -> PASS
+        gen.addLoadImmediate(R0, ICMP6_TYPE_OFFSET + PING_HEADER_LENGTH)
+        gen.addJumpIfBytesAtR0NotEqual(data, BaseApfGenerator.PASS_LABEL)
+
+        // else DROP
+        gen.addJump(BaseApfGenerator.DROP_LABEL)
+
+        val program = gen.generate()
+        installProgram(program)
+        readProgram() // wait for install completion
+
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingDropped()
+    }
+
+    fun clearApfMemory() = installProgram(ByteArray(caps.maximumApfProgramSize))
+
+    // APF integration is mostly broken before V
+    @VsrTest(requirements = ["VSR-5.3.12-002", "VSR-5.3.12-005"])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    fun testPrefilledMemorySlotsV4() {
+        // VSR-14 mandates APF to be turned on when the screen is off and the Wi-Fi link
+        // is idle or traffic is less than 10 Mbps. Before that, we don't mandate when the APF
+        // should be turned on.
+        assume().that(getVsrApiLevel()).isAtLeast(34)
+        // Test v4 memory slots on both v4 and v6 interpreters.
+        assumeApfVersionSupportAtLeast(4)
+        clearApfMemory()
+        val gen = ApfV4Generator(
+                caps.apfVersionSupported,
+                caps.maximumApfProgramSize,
+                caps.maximumApfProgramSize
+        )
+
+        // If not ICMPv6 Echo Reply -> PASS
+        gen.addPassIfNotIcmpv6EchoReply()
+
+        // Store all prefilled memory slots in counter region [500, 520)
+        val counterRegion = 500
+        gen.addLoadImmediate(R1, counterRegion)
+        gen.addLoadFromMemory(R0, MemorySlot.PROGRAM_SIZE)
+        gen.addStoreData(R0, 0)
+        gen.addLoadFromMemory(R0, MemorySlot.RAM_LEN)
+        gen.addStoreData(R0, 4)
+        gen.addLoadFromMemory(R0, MemorySlot.IPV4_HEADER_SIZE)
+        gen.addStoreData(R0, 8)
+        gen.addLoadFromMemory(R0, MemorySlot.PACKET_SIZE)
+        gen.addStoreData(R0, 12)
+        gen.addLoadFromMemory(R0, MemorySlot.FILTER_AGE_SECONDS)
+        gen.addStoreData(R0, 16)
+
+        val program = gen.generate()
+        assertThat(program.size).isLessThan(counterRegion)
+        installProgram(program)
+        readProgram() // wait for install completion
+
+        // Trigger the program by sending a ping and waiting on the reply.
+        val payloadSize = if (getFirstApiLevel() >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            68
+        } else {
+            4
+        }
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingReply()
+
+        val readResult = readProgram()
+        val buffer = ByteBuffer.wrap(readResult, counterRegion, 20 /* length */)
+        expect.withMessage("PROGRAM_SIZE").that(buffer.getInt()).isEqualTo(program.size)
+        expect.withMessage("RAM_LEN").that(buffer.getInt()).isEqualTo(caps.maximumApfProgramSize)
+        expect.withMessage("IPV4_HEADER_SIZE").that(buffer.getInt()).isEqualTo(0)
+        // Ping packet payload + ICMPv6 header (8)  + IPv6 header (40) + ethernet header (14)
+        expect.withMessage("PACKET_SIZE").that(buffer.getInt()).isEqualTo(payloadSize + 8 + 40 + 14)
+        expect.withMessage("FILTER_AGE_SECONDS").that(buffer.getInt()).isLessThan(5)
+    }
+
+    // APF integration is mostly broken before V
+    @VsrTest(requirements = ["VSR-5.3.12-002", "VSR-5.3.12-005"])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    fun testFilterAgeIncreasesBetweenPackets() {
+        // VSR-14 mandates APF to be turned on when the screen is off and the Wi-Fi link
+        // is idle or traffic is less than 10 Mbps. Before that, we don't mandate when the APF
+        // should be turned on.
+        assume().that(getVsrApiLevel()).isAtLeast(34)
+        assumeApfVersionSupportAtLeast(4)
+        clearApfMemory()
+        val gen = ApfV4Generator(
+                caps.apfVersionSupported,
+                caps.maximumApfProgramSize,
+                caps.maximumApfProgramSize
+        )
+
+        // If not ICMPv6 Echo Reply -> PASS
+        gen.addPassIfNotIcmpv6EchoReply()
+
+        // Store all prefilled memory slots in counter region [500, 520)
+        val counterRegion = 500
+        gen.addLoadImmediate(R1, counterRegion)
+        gen.addLoadFromMemory(R0, MemorySlot.FILTER_AGE_SECONDS)
+        gen.addStoreData(R0, 0)
+
+        installProgram(gen.generate())
+        readProgram() // wait for install completion
+
+        val payloadSize = 56
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingReply()
+
+        var buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)
+        val filterAgeSecondsOrig = buffer.getInt()
+
+        Thread.sleep(5100)
+
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingReply()
+
+        buffer = ByteBuffer.wrap(readProgram(), counterRegion, 4 /* length */)
+        val filterAgeSeconds = buffer.getInt()
+        // Assert that filter age has increased, but not too much.
+        val timeDiff = filterAgeSeconds - filterAgeSecondsOrig
+        assertThat(timeDiff).isAnyOf(5, 6)
+    }
+
+    @VsrTest(requirements = ["VSR-5.3.12-002", "VSR-5.3.12-005"])
+    @Test
+    fun testFilterAge16384thsIncreasesBetweenPackets() {
+        assumeApfVersionSupportAtLeast(6000)
+        clearApfMemory()
+        val gen = ApfV6Generator(
+                caps.apfVersionSupported,
+                caps.maximumApfProgramSize,
+                caps.maximumApfProgramSize
+        )
+
+        // If not ICMPv6 Echo Reply -> PASS
+        gen.addPassIfNotIcmpv6EchoReply()
+
+        // Store all prefilled memory slots in counter region [500, 520)
+        gen.addLoadFromMemory(R0, MemorySlot.FILTER_AGE_16384THS)
+        gen.addStoreCounter(FILTER_AGE_16384THS, R0)
+
+        installProgram(gen.generate())
+        readProgram() // wait for install completion
+
+        val payloadSize = 56
+        val data = ByteArray(payloadSize).also { Random.nextBytes(it) }
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingReply()
+
+        var apfRam = readProgram()
+        val filterAge16384thSecondsOrig =
+                ApfCounterTracker.getCounterValue(apfRam, FILTER_AGE_16384THS)
+
+        Thread.sleep(5000)
+
+        packetReader.sendPing(data, payloadSize)
+        packetReader.expectPingReply()
+
+        apfRam = readProgram()
+        val filterAge16384thSeconds = ApfCounterTracker.getCounterValue(apfRam, FILTER_AGE_16384THS)
+        val timeDiff = (filterAge16384thSeconds - filterAge16384thSecondsOrig)
+        // Expect the HAL plus ping latency to be less than 800ms.
+        val timeDiffLowerBound = (4.99 * 16384).toInt()
+        val timeDiffUpperBound = (5.81 * 16384).toInt()
+        // Assert that filter age has increased, but not too much.
+        assertThat(timeDiff).isGreaterThan(timeDiffLowerBound)
+        assertThat(timeDiff).isLessThan(timeDiffUpperBound)
+    }
+}
diff --git a/tests/cts/net/src/android/net/cts/BatteryStatsManagerTest.java b/tests/cts/net/src/android/net/cts/BatteryStatsManagerTest.java
index 3e5d0ba..16a7b73 100644
--- a/tests/cts/net/src/android/net/cts/BatteryStatsManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/BatteryStatsManagerTest.java
@@ -48,6 +48,7 @@
 import androidx.test.filters.SdkSuppress;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.testutils.AutoReleaseNetworkCallbackRule;
 import com.android.testutils.DevSdkIgnoreRule;
 
 import org.junit.Before;
@@ -67,7 +68,10 @@
 @RunWith(AndroidJUnit4.class)
 @SdkSuppress(minSdkVersion = Build.VERSION_CODES.R) // BatteryStatsManager did not exist on Q
 public class BatteryStatsManagerTest{
-    @Rule
+    @Rule(order = 1)
+    public final AutoReleaseNetworkCallbackRule
+            networkCallbackRule = new AutoReleaseNetworkCallbackRule();
+    @Rule(order = 2)
     public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
     private static final String TAG = BatteryStatsManagerTest.class.getSimpleName();
     private static final String TEST_URL = "https://connectivitycheck.gstatic.com/generate_204";
@@ -145,7 +149,7 @@
             return;
         }
 
-        final Network cellNetwork = mCtsNetUtils.connectToCell();
+        final Network cellNetwork = networkCallbackRule.requestCell();
         final URL url = new URL(TEST_URL);
 
         // Get cellular battery stats
diff --git a/tests/cts/net/src/android/net/cts/CaptivePortalTest.kt b/tests/cts/net/src/android/net/cts/CaptivePortalTest.kt
index 99222dd..07e2024 100644
--- a/tests/cts/net/src/android/net/cts/CaptivePortalTest.kt
+++ b/tests/cts/net/src/android/net/cts/CaptivePortalTest.kt
@@ -47,6 +47,7 @@
 import com.android.modules.utils.build.SdkLevel.isAtLeastR
 import com.android.net.module.util.NetworkStackConstants.TEST_CAPTIVE_PORTAL_HTTPS_URL
 import com.android.net.module.util.NetworkStackConstants.TEST_CAPTIVE_PORTAL_HTTP_URL
+import com.android.testutils.AutoReleaseNetworkCallbackRule
 import com.android.testutils.DeviceConfigRule
 import com.android.testutils.RecorderCallback.CallbackEntry.CapabilitiesChanged
 import com.android.testutils.SkipMainlinePresubmit
@@ -101,9 +102,12 @@
 
     private val server = TestHttpServer("localhost")
 
-    @get:Rule
+    @get:Rule(order = 1)
     val deviceConfigRule = DeviceConfigRule(retryCountBeforeSIfConfigChanged = 5)
 
+    @get:Rule(order = 2)
+    val networkCallbackRule = AutoReleaseNetworkCallbackRule()
+
     companion object {
         @JvmStatic @BeforeClass
         fun setUpClass() {
@@ -144,15 +148,15 @@
         assumeTrue(pm.hasSystemFeature(FEATURE_WIFI))
         assumeFalse(pm.hasSystemFeature(FEATURE_WATCH))
         utils.ensureWifiConnected()
-        val cellNetwork = utils.connectToCell()
+        val cellNetwork = networkCallbackRule.requestCell()
 
         // Verify cell network is validated
         val cellReq = NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_CELLULAR)
                 .addCapability(NET_CAPABILITY_INTERNET)
                 .build()
-        val cellCb = TestableNetworkCallback(timeoutMs = TEST_TIMEOUT_MS)
-        cm.registerNetworkCallback(cellReq, cellCb)
+        val cellCb = networkCallbackRule.registerNetworkCallback(cellReq,
+            TestableNetworkCallback(timeoutMs = TEST_TIMEOUT_MS))
         val cb = cellCb.poll { it.network == cellNetwork &&
                 it is CapabilitiesChanged && it.caps.hasCapability(NET_CAPABILITY_VALIDATED)
         }
@@ -213,8 +217,6 @@
         } finally {
             cm.unregisterNetworkCallback(wifiCb)
             server.stop()
-            // disconnectFromCell should be called after connectToCell
-            utils.disconnectFromCell()
         }
     }
 
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index cdf8340..21eb90f 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -36,11 +36,22 @@
 import static android.content.pm.PackageManager.FEATURE_WIFI_DIRECT;
 import static android.content.pm.PackageManager.GET_PERMISSIONS;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_ADMIN_DISABLED;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_USER_RESTRICTED;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_BACKGROUND;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_STANDBY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_BATTERY_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_REASON_DOZE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_OEM_DENY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_RESTRICTED_MODE;
 import static android.net.ConnectivityManager.EXTRA_NETWORK;
 import static android.net.ConnectivityManager.EXTRA_NETWORK_REQUEST;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3;
@@ -71,7 +82,9 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_PARTIAL_CONNECTIVITY;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
 import static android.net.NetworkCapabilities.TRANSPORT_TEST;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
@@ -81,7 +94,6 @@
 import static android.net.cts.util.CtsNetUtils.HTTP_PORT;
 import static android.net.cts.util.CtsNetUtils.NETWORK_CALLBACK_ACTION;
 import static android.net.cts.util.CtsNetUtils.TEST_HOST;
-import static android.net.cts.util.CtsNetUtils.TestNetworkCallback;
 import static android.net.cts.util.CtsTetheringUtils.TestTetheringEventCallback;
 import static android.os.MessageQueue.OnFileDescriptorEventListener.EVENT_INPUT;
 import static android.os.Process.INVALID_UID;
@@ -162,6 +174,7 @@
 import android.net.wifi.WifiManager;
 import android.os.Binder;
 import android.os.Build;
+import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.MessageQueue;
@@ -180,10 +193,11 @@
 import android.util.Log;
 import android.util.Range;
 
-import androidx.test.InstrumentationRegistry;
 import androidx.test.filters.RequiresDevice;
+import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.compatibility.common.util.DynamicConfigDeviceSide;
 import com.android.internal.util.ArrayUtils;
 import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.CollectionUtils;
@@ -191,15 +205,16 @@
 import com.android.networkstack.apishim.ConstantsShim;
 import com.android.networkstack.apishim.NetworkInformationShimImpl;
 import com.android.networkstack.apishim.common.ConnectivityManagerShim;
+import com.android.testutils.AutoReleaseNetworkCallbackRule;
 import com.android.testutils.CompatUtil;
 import com.android.testutils.ConnectivityModuleTest;
 import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.DeviceConfigRule;
 import com.android.testutils.DeviceInfoUtils;
 import com.android.testutils.DumpTestUtils;
 import com.android.testutils.RecorderCallback.CallbackEntry;
-import com.android.testutils.SkipMainlinePresubmit;
 import com.android.testutils.SkipPresubmit;
 import com.android.testutils.TestHttpServer;
 import com.android.testutils.TestNetworkTracker;
@@ -211,6 +226,7 @@
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -234,6 +250,7 @@
 import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
 import java.util.Objects;
@@ -259,10 +276,14 @@
 
 @RunWith(AndroidJUnit4.class)
 public class ConnectivityManagerTest {
-    @Rule
+    @Rule(order = 1)
     public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
 
-    @Rule
+    @Rule(order = 2)
+    public final AutoReleaseNetworkCallbackRule
+            networkCallbackRule = new AutoReleaseNetworkCallbackRule();
+
+    @Rule(order = 3)
     public final DeviceConfigRule mTestValidationConfigRule = new DeviceConfigRule(
             5 /* retryCountBeforeSIfConfigChanged */);
 
@@ -290,6 +311,7 @@
 
     // Airplane Mode BroadcastReceiver Timeout
     private static final long AIRPLANE_MODE_CHANGE_TIMEOUT_MS = 10_000L;
+    private static final long CELL_DATA_AVAILABLE_TIMEOUT_MS = 120_000L;
 
     // Timeout for applying uids allowed on restricted networks
     private static final long APPLYING_UIDS_ALLOWED_ON_RESTRICTED_NETWORKS_TIMEOUT_MS = 3_000L;
@@ -315,6 +337,11 @@
     private static final String TEST_HTTPS_URL_PATH = "/https_path";
     private static final String TEST_HTTP_URL_PATH = "/http_path";
     private static final String LOCALHOST_HOSTNAME = "localhost";
+    private static final String TEST_MODULE_NAME_OPTION = "test-module-name";
+    private static final String IP_ADDRESS_ECHO_URL_KEY = "IP_ADDRESS_ECHO_URL";
+    private static final List<String> ALLOWED_IP_ADDRESS_ECHO_URLS = Arrays.asList(
+            "https://google-ipv6test.appspot.com/ip.js?fmt=text",
+            "https://ipv6test.googleapis-cn.com/ip.js?fmt=text");
     // Re-connecting to the AP, obtaining an IP address, revalidating can take a long time
     private static final long WIFI_CONNECT_TIMEOUT_MS = 60_000L;
 
@@ -328,8 +355,6 @@
     private final ArraySet<Integer> mNetworkTypes = new ArraySet<>();
     private UiAutomation mUiAutomation;
     private CtsNetUtils mCtsNetUtils;
-    // The registered callbacks.
-    private List<NetworkCallback> mRegisteredCallbacks = new ArrayList<>();
     // Used for cleanup purposes.
     private final List<Range<Integer>> mVpnRequiredUidRanges = new ArrayList<>();
 
@@ -411,11 +436,6 @@
 
     @After
     public void tearDown() throws Exception {
-        // Release any NetworkRequests filed to connect mobile data.
-        if (mCtsNetUtils.cellConnectAttempted()) {
-            mCtsNetUtils.disconnectFromCell();
-        }
-
         if (TestUtils.shouldTestSApis()) {
             runWithShellPermissionIdentity(
                     () -> mCmShim.setRequireVpnForUids(false, mVpnRequiredUidRanges),
@@ -425,15 +445,12 @@
         // All tests in this class require a working Internet connection as they start. Make
         // sure there is still one as they end that's ready to use for the next test to use.
         mTestValidationConfigRule.runAfterNextCleanup(() -> {
-            final TestNetworkCallback callback = new TestNetworkCallback();
-            registerDefaultNetworkCallback(callback);
-            try {
-                assertNotNull("Couldn't restore Internet connectivity",
-                        callback.waitForAvailable());
-            } finally {
-                // Unregister all registered callbacks.
-                unregisterRegisteredCallbacks();
-            }
+            // mTestValidationConfigRule has higher order than networkCallbackRule, so
+            // networkCallbackRule is the outer rule and will be cleaned up after this method.
+            final TestableNetworkCallback callback =
+                    networkCallbackRule.registerDefaultNetworkCallback();
+            assertNotNull("Couldn't restore Internet connectivity",
+                    callback.eventuallyExpect(CallbackEntry.AVAILABLE));
         });
     }
 
@@ -555,7 +572,7 @@
             throws InterruptedException {
         assumeTrue(mPackageManager.hasSystemFeature(FEATURE_TELEPHONY));
         // Make sure cell is active to retrieve IMSI for verification in later step.
-        final Network cellNetwork = mCtsNetUtils.connectToCell();
+        final Network cellNetwork = networkCallbackRule.requestCell();
         final String subscriberId = getSubscriberIdForCellNetwork(cellNetwork);
         assertFalse(TextUtils.isEmpty(subscriberId));
 
@@ -845,7 +862,7 @@
      * Tests that connections can be opened on WiFi and cellphone networks,
      * and that they are made from different IP addresses.
      */
-    @AppModeFull(reason = "Cannot get WifiManager in instant app mode")
+    @AppModeFull(reason = "Cannot get WifiManager or access the SD card in instant app mode")
     @Test
     @RequiresDevice // Virtual devices use a single internet connection for all networks
     public void testOpenConnection() throws Exception {
@@ -853,9 +870,10 @@
         assumeTrue(mPackageManager.hasSystemFeature(FEATURE_TELEPHONY));
 
         Network wifiNetwork = mCtsNetUtils.ensureWifiConnected();
-        Network cellNetwork = mCtsNetUtils.connectToCell();
+        Network cellNetwork = networkCallbackRule.requestCell();
         // This server returns the requestor's IP address as the response body.
-        URL url = new URL("http://google-ipv6test.appspot.com/ip.js?fmt=text");
+        String ipAddressEchoUrl = getIpAddressEchoUrlFromConfig();
+        URL url = new URL(ipAddressEchoUrl);
         String wifiAddressString = httpGet(wifiNetwork, url);
         String cellAddressString = httpGet(cellNetwork, url);
 
@@ -872,6 +890,19 @@
     }
 
     /**
+     * Gets IP address echo url from dynamic config.
+     */
+    private static String getIpAddressEchoUrlFromConfig() throws Exception {
+        Bundle instrumentationArgs = InstrumentationRegistry.getArguments();
+        String testModuleName = instrumentationArgs.getString(TEST_MODULE_NAME_OPTION);
+        // Get the DynamicConfig.xml contents and extract the ipv6 test URL.
+        DynamicConfigDeviceSide dynamicConfig = new DynamicConfigDeviceSide(testModuleName);
+        String ipAddressEchoUrl = dynamicConfig.getValue(IP_ADDRESS_ECHO_URL_KEY);
+        assertContains(ALLOWED_IP_ADDRESS_ECHO_URLS, ipAddressEchoUrl);
+        return ipAddressEchoUrl;
+    }
+
+    /**
      * Performs a HTTP GET to the specified URL on the specified Network, and returns
      * the response body decoded as UTF-8.
      */
@@ -993,10 +1024,10 @@
         // default network.
         return new NetworkRequest.Builder()
                 .clearCapabilities()
-                .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
-                .addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
-                .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)
-                .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+                .addCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                .addCapability(NET_CAPABILITY_TRUSTED)
+                .addCapability(NET_CAPABILITY_NOT_VPN)
+                .addCapability(NET_CAPABILITY_INTERNET)
                 .build();
     }
 
@@ -1022,15 +1053,14 @@
 
     @AppModeFull(reason = "WRITE_SECURE_SETTINGS permission can't be granted to instant apps")
     @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
-    @SkipMainlinePresubmit(reason = "Out of SLO flakiness")
     public void testIsPrivateDnsBroken() throws InterruptedException {
         final String invalidPrivateDnsServer = "invalidhostname.example.com";
         final String goodPrivateDnsServer = "dns.google";
         mCtsNetUtils.storePrivateDnsSetting();
-        final TestableNetworkCallback cb = new TestableNetworkCallback();
         final NetworkRequest networkRequest = new NetworkRequest.Builder()
                 .addCapability(NET_CAPABILITY_INTERNET).build();
-        registerNetworkCallback(networkRequest, cb);
+        final TestableNetworkCallback cb =
+                networkCallbackRule.registerNetworkCallback(networkRequest);
         final Network networkForPrivateDns = mCm.getActiveNetwork();
         try {
             // Verifying the good private DNS sever
@@ -1068,24 +1098,27 @@
         assumeTrue(mPackageManager.hasSystemFeature(FEATURE_WIFI));
 
         // We will register for a WIFI network being available or lost.
-        final TestNetworkCallback callback = new TestNetworkCallback();
-        registerNetworkCallback(makeWifiNetworkRequest(), callback);
+        final TestableNetworkCallback callback = networkCallbackRule.registerNetworkCallback(
+                makeWifiNetworkRequest());
 
-        final TestNetworkCallback defaultTrackingCallback = new TestNetworkCallback();
-        registerDefaultNetworkCallback(defaultTrackingCallback);
+        final TestableNetworkCallback defaultTrackingCallback =
+                networkCallbackRule.registerDefaultNetworkCallback();
 
-        final TestNetworkCallback systemDefaultCallback = new TestNetworkCallback();
-        final TestNetworkCallback perUidCallback = new TestNetworkCallback();
-        final TestNetworkCallback bestMatchingCallback = new TestNetworkCallback();
+        final TestableNetworkCallback systemDefaultCallback = new TestableNetworkCallback();
+        final TestableNetworkCallback perUidCallback = new TestableNetworkCallback();
+        final TestableNetworkCallback bestMatchingCallback = new TestableNetworkCallback();
         final Handler h = new Handler(Looper.getMainLooper());
         if (TestUtils.shouldTestSApis()) {
             assertThrows(SecurityException.class, () ->
-                    registerSystemDefaultNetworkCallback(systemDefaultCallback, h));
+                    networkCallbackRule.registerSystemDefaultNetworkCallback(
+                            systemDefaultCallback, h));
             runWithShellPermissionIdentity(() -> {
-                registerSystemDefaultNetworkCallback(systemDefaultCallback, h);
-                registerDefaultNetworkCallbackForUid(Process.myUid(), perUidCallback, h);
+                networkCallbackRule.registerSystemDefaultNetworkCallback(systemDefaultCallback, h);
+                networkCallbackRule.registerDefaultNetworkCallbackForUid(Process.myUid(),
+                        perUidCallback, h);
             }, NETWORK_SETTINGS);
-            registerBestMatchingNetworkCallback(makeDefaultRequest(), bestMatchingCallback, h);
+            networkCallbackRule.registerBestMatchingNetworkCallback(
+                    makeDefaultRequest(), bestMatchingCallback, h);
         }
 
         Network wifiNetwork = null;
@@ -1094,24 +1127,22 @@
         // Now we should expect to get a network callback about availability of the wifi
         // network even if it was already connected as a state-based action when the callback
         // is registered.
-        wifiNetwork = callback.waitForAvailable();
+        wifiNetwork = callback.eventuallyExpect(CallbackEntry.AVAILABLE).getNetwork();
         assertNotNull("Did not receive onAvailable for TRANSPORT_WIFI request",
                 wifiNetwork);
 
-        final Network defaultNetwork = defaultTrackingCallback.waitForAvailable();
+        final Network defaultNetwork = defaultTrackingCallback.eventuallyExpect(
+                CallbackEntry.AVAILABLE).getNetwork();
         assertNotNull("Did not receive onAvailable on default network callback",
                 defaultNetwork);
 
         if (TestUtils.shouldTestSApis()) {
-            assertNotNull("Did not receive onAvailable on system default network callback",
-                    systemDefaultCallback.waitForAvailable());
-            final Network perUidNetwork = perUidCallback.waitForAvailable();
-            assertNotNull("Did not receive onAvailable on per-UID default network callback",
-                    perUidNetwork);
+            systemDefaultCallback.eventuallyExpect(CallbackEntry.AVAILABLE);
+            final Network perUidNetwork = perUidCallback.eventuallyExpect(CallbackEntry.AVAILABLE)
+                    .getNetwork();
             assertEquals(defaultNetwork, perUidNetwork);
-            final Network bestMatchingNetwork = bestMatchingCallback.waitForAvailable();
-            assertNotNull("Did not receive onAvailable on best matching network callback",
-                    bestMatchingNetwork);
+            final Network bestMatchingNetwork = bestMatchingCallback.eventuallyExpect(
+                    CallbackEntry.AVAILABLE).getNetwork();
             assertEquals(defaultNetwork, bestMatchingNetwork);
         }
     }
@@ -1123,8 +1154,8 @@
         final Handler h = new Handler(Looper.getMainLooper());
         // Verify registerSystemDefaultNetworkCallback can be accessed via
         // CONNECTIVITY_USE_RESTRICTED_NETWORKS permission.
-        runWithShellPermissionIdentity(() ->
-                        registerSystemDefaultNetworkCallback(new TestNetworkCallback(), h),
+        runWithShellPermissionIdentity(
+                () -> networkCallbackRule.registerSystemDefaultNetworkCallback(h),
                 CONNECTIVITY_USE_RESTRICTED_NETWORKS);
     }
 
@@ -1226,13 +1257,14 @@
             final IntentFilter filter = new IntentFilter();
             filter.addAction(broadcastAction);
 
+            final CompletableFuture<NetworkRequest> requestFuture = new CompletableFuture<>();
             final CompletableFuture<Network> networkFuture = new CompletableFuture<>();
             final AtomicInteger receivedCount = new AtomicInteger(0);
             receiver = new BroadcastReceiver() {
                 @Override
                 public void onReceive(Context context, Intent intent) {
                     final NetworkRequest request = intent.getParcelableExtra(EXTRA_NETWORK_REQUEST);
-                    assertPendingIntentRequestMatches(request, secondRequest, useListen);
+                    requestFuture.complete(request);
                     receivedCount.incrementAndGet();
                     networkFuture.complete(intent.getParcelableExtra(EXTRA_NETWORK));
                 }
@@ -1247,6 +1279,9 @@
             } catch (TimeoutException e) {
                 throw new AssertionError("PendingIntent not received for " + secondRequest, e);
             }
+            assertPendingIntentRequestMatches(
+                    requestFuture.get(NETWORK_CALLBACK_TIMEOUT_MS, TimeUnit.MILLISECONDS),
+                    secondRequest, useListen);
 
             // Sleep for a small amount of time to try to check that only one callback is ever
             // received (so the first callback was really unregistered). This does not guarantee
@@ -1294,15 +1329,14 @@
      */
     @AppModeFull(reason = "CHANGE_NETWORK_STATE permission can't be granted to instant apps")
     @Test
-    public void testRequestNetworkCallback() throws Exception {
-        final TestNetworkCallback callback = new TestNetworkCallback();
-        requestNetwork(new NetworkRequest.Builder()
-                .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
-                .build(), callback);
+    public void testRequestNetworkCallback() {
+        final TestableNetworkCallback callback = networkCallbackRule.requestNetwork(
+                new NetworkRequest.Builder().addCapability(
+                                NET_CAPABILITY_INTERNET)
+                        .build());
 
         // Wait to get callback for availability of internet
-        Network internetNetwork = callback.waitForAvailable();
-        assertNotNull("Did not receive NetworkCallback#onAvailable for INTERNET", internetNetwork);
+        callback.eventuallyExpect(CallbackEntry.AVAILABLE).getNetwork();
     }
 
     /**
@@ -1320,16 +1354,13 @@
             }
         }
 
-        final TestNetworkCallback callback = new TestNetworkCallback();
-        requestNetwork(new NetworkRequest.Builder().addTransportType(TRANSPORT_WIFI).build(),
-                callback, 100);
 
+        final TestableNetworkCallback callback = networkCallbackRule.requestNetwork(
+                new NetworkRequest.Builder().addTransportType(TRANSPORT_WIFI).build(),
+                100 /* timeoutMs */);
         try {
             // Wait to get callback for unavailability of requested network
-            assertTrue("Did not receive NetworkCallback#onUnavailable",
-                    callback.waitForUnavailable());
-        } catch (InterruptedException e) {
-            fail("NetworkCallback wait was interrupted.");
+            callback.eventuallyExpect(CallbackEntry.UNAVAILABLE, 2_000 /* timeoutMs */);
         } finally {
             if (previousWifiEnabledState) {
                 mCtsNetUtils.connectToWifi();
@@ -1416,40 +1447,48 @@
             final boolean useSystemDefault)
             throws Exception {
         final CompletableFuture<Network> networkFuture = new CompletableFuture<>();
-        final NetworkCallback networkCallback = new NetworkCallback() {
-            @Override
-            public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) {
-                if (!nc.hasTransport(targetTransportType)) return;
 
-                final boolean metered = !nc.hasCapability(NET_CAPABILITY_NOT_METERED);
-                final boolean validated = nc.hasCapability(NET_CAPABILITY_VALIDATED);
-                if (metered == requestedMeteredness && (!waitForValidation || validated)) {
-                    networkFuture.complete(network);
+        // Registering a callback here guarantees onCapabilitiesChanged is called immediately
+        // with the current setting. Therefore, if the setting has already been changed,
+        // this method will return right away, and if not, it'll wait for the setting to change.
+        final TestableNetworkCallback networkCallback;
+        if (useSystemDefault) {
+            networkCallback = runWithShellPermissionIdentity(() -> {
+                if (isAtLeastS()) {
+                    return networkCallbackRule.registerSystemDefaultNetworkCallback(
+                            new Handler(Looper.getMainLooper()));
+                } else {
+                    // registerSystemDefaultNetworkCallback is only supported on S+.
+                    return networkCallbackRule.requestNetwork(
+                            new NetworkRequest.Builder()
+                                    .clearCapabilities()
+                                    .addCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                                    .addCapability(NET_CAPABILITY_TRUSTED)
+                                    .addCapability(NET_CAPABILITY_NOT_VPN)
+                                    .addCapability(NET_CAPABILITY_INTERNET)
+                                    .build(),
+                            new TestableNetworkCallback(),
+                            new Handler(Looper.getMainLooper()));
                 }
-            }
-        };
-
-        try {
-            // Registering a callback here guarantees onCapabilitiesChanged is called immediately
-            // with the current setting. Therefore, if the setting has already been changed,
-            // this method will return right away, and if not, it'll wait for the setting to change.
-            if (useSystemDefault) {
-                runWithShellPermissionIdentity(() ->
-                                registerSystemDefaultNetworkCallback(networkCallback,
-                                        new Handler(Looper.getMainLooper())),
-                        NETWORK_SETTINGS);
-            } else {
-                registerDefaultNetworkCallback(networkCallback);
-            }
-
-            // Changing meteredness on wifi involves reconnecting, which can take several seconds
-            // (involves re-associating, DHCP...).
-            return networkFuture.get(NETWORK_CALLBACK_TIMEOUT_MS, TimeUnit.MILLISECONDS);
-        } catch (TimeoutException e) {
-            throw new AssertionError("Timed out waiting for active network metered status to "
-                    + "change to " + requestedMeteredness + " ; network = "
-                    + mCm.getActiveNetwork(), e);
+            },
+            NETWORK_SETTINGS);
+        } else {
+            networkCallback = networkCallbackRule.registerDefaultNetworkCallback();
         }
+
+        return networkCallback.eventuallyExpect(
+                CallbackEntry.NETWORK_CAPS_UPDATED,
+                // Changing meteredness on wifi involves reconnecting, which can take several
+                // seconds (involves re-associating, DHCP...).
+                NETWORK_CALLBACK_TIMEOUT_MS,
+                cb -> {
+                    final NetworkCapabilities nc = cb.getCaps();
+                    if (!nc.hasTransport(targetTransportType)) return false;
+
+                    final boolean metered = !nc.hasCapability(NET_CAPABILITY_NOT_METERED);
+                    final boolean validated = nc.hasCapability(NET_CAPABILITY_VALIDATED);
+                    return metered == requestedMeteredness && (!waitForValidation || validated);
+                }).getNetwork();
     }
 
     private Network setWifiMeteredStatusAndWait(String ssid, boolean isMetered,
@@ -2025,7 +2064,7 @@
             return;
         }
 
-        final Network network = mCtsNetUtils.connectToCell();
+        final Network network = networkCallbackRule.requestCell();
         final int supported = getSupportedKeepalivesForNet(network);
         final InetAddress srcAddr = getFirstV4Address(network);
         assumeTrue("This test requires native IPv4", srcAddr != null);
@@ -2091,15 +2130,15 @@
     }
 
     private void verifyBindSocketToRestrictedNetworkDisallowed() throws Exception {
-        final TestableNetworkCallback testNetworkCb = new TestableNetworkCallback();
         final NetworkRequest testRequest = new NetworkRequest.Builder()
                 .addTransportType(NetworkCapabilities.TRANSPORT_TEST)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+                .removeCapability(NET_CAPABILITY_TRUSTED)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .setNetworkSpecifier(CompatUtil.makeTestNetworkSpecifier(
                         TEST_RESTRICTED_NW_IFACE_NAME))
                 .build();
-        runWithShellPermissionIdentity(() -> requestNetwork(testRequest, testNetworkCb),
+        final TestableNetworkCallback testNetworkCb = runWithShellPermissionIdentity(
+                () -> networkCallbackRule.requestNetwork(testRequest),
                 CONNECTIVITY_USE_RESTRICTED_NETWORKS,
                 // CONNECTIVITY_INTERNAL is for requesting restricted network because shell does not
                 // have CONNECTIVITY_USE_RESTRICTED_NETWORKS on R.
@@ -2115,7 +2154,7 @@
                     NETWORK_CALLBACK_TIMEOUT_MS,
                     entry -> network.equals(entry.getNetwork())
                             && (!((CallbackEntry.CapabilitiesChanged) entry).getCaps()
-                            .hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)));
+                            .hasCapability(NET_CAPABILITY_NOT_RESTRICTED)));
             // CtsNetTestCases package doesn't hold CONNECTIVITY_USE_RESTRICTED_NETWORKS, so it
             // does not allow to bind socket to restricted network.
             assertThrows(IOException.class, () -> network.bindSocket(socket));
@@ -2200,8 +2239,7 @@
             registerCallbackAndWaitForAvailable(makeWifiNetworkRequest(), wifiCb);
         }
         if (supportTelephony) {
-            // connectToCell needs to be followed by disconnectFromCell, which is called in tearDown
-            mCtsNetUtils.connectToCell();
+            networkCallbackRule.requestCell();
             registerCallbackAndWaitForAvailable(makeCellNetworkRequest(), telephonyCb);
         }
 
@@ -2229,7 +2267,10 @@
             // connectToCell only registers a request, it cannot / does not need to be called twice
             mCtsNetUtils.ensureWifiConnected();
             if (verifyWifi) waitForAvailable(wifiCb);
-            if (supportTelephony) waitForAvailable(telephonyCb);
+            if (supportTelephony) {
+                telephonyCb.eventuallyExpect(
+                        CallbackEntry.AVAILABLE, CELL_DATA_AVAILABLE_TIMEOUT_MS);
+            }
         } finally {
             // Restore the previous state of airplane mode and permissions:
             runShellCommand("cmd connectivity airplane-mode "
@@ -2239,7 +2280,7 @@
 
     private void registerCallbackAndWaitForAvailable(@NonNull final NetworkRequest request,
             @NonNull final TestableNetworkCallback cb) {
-        registerNetworkCallback(request, cb);
+        networkCallbackRule.registerNetworkCallback(request, cb);
         waitForAvailable(cb);
     }
 
@@ -2347,21 +2388,13 @@
 
     private void verifySsidFromCallbackNetworkCapabilities(@NonNull String ssid, boolean hasSsid)
             throws Exception {
-        final CompletableFuture<NetworkCapabilities> foundNc = new CompletableFuture();
-        final NetworkCallback callback = new NetworkCallback() {
-            @Override
-            public void onCapabilitiesChanged(Network network, NetworkCapabilities nc) {
-                foundNc.complete(nc);
-            }
-        };
-
-        registerNetworkCallback(makeWifiNetworkRequest(), callback);
+        final TestableNetworkCallback callback =
+                networkCallbackRule.registerNetworkCallback(makeWifiNetworkRequest());
         // Registering a callback here guarantees onCapabilitiesChanged is called immediately
         // because WiFi network should be connected.
-        final NetworkCapabilities nc =
-                foundNc.get(NETWORK_CALLBACK_TIMEOUT_MS, TimeUnit.MILLISECONDS);
+        final NetworkCapabilities nc = callback.eventuallyExpect(
+                CallbackEntry.NETWORK_CAPS_UPDATED, NETWORK_CALLBACK_TIMEOUT_MS).getCaps();
         // Verify if ssid is contained in the NetworkCapabilities received from callback.
-        assertNotNull("NetworkCapabilities of the network is null", nc);
         assertEquals(hasSsid, Pattern.compile(ssid).matcher(nc.toString()).find());
     }
 
@@ -2390,8 +2423,8 @@
         final NetworkRequest testRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_TEST)
                 // Test networks do not have NOT_VPN or TRUSTED capabilities by default
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
+                .removeCapability(NET_CAPABILITY_NOT_VPN)
+                .removeCapability(NET_CAPABILITY_TRUSTED)
                 .setNetworkSpecifier(CompatUtil.makeTestNetworkSpecifier(
                         testNetworkInterface.getInterfaceName()))
                 .build();
@@ -2400,14 +2433,15 @@
         final TestableNetworkCallback callback = new TestableNetworkCallback();
         final Handler handler = new Handler(Looper.getMainLooper());
         assertThrows(SecurityException.class,
-                () -> requestBackgroundNetwork(testRequest, callback, handler));
+                () -> networkCallbackRule.requestBackgroundNetwork(testRequest, callback, handler));
 
         Network testNetwork = null;
         try {
             // Request background test network via Shell identity which has NETWORK_SETTINGS
             // permission granted.
             runWithShellPermissionIdentity(
-                    () -> requestBackgroundNetwork(testRequest, callback, handler),
+                    () -> networkCallbackRule.requestBackgroundNetwork(
+                            testRequest, callback, handler),
                     new String[] { android.Manifest.permission.NETWORK_SETTINGS });
 
             // Register the test network agent which has no foreground request associated to it.
@@ -2478,8 +2512,11 @@
         }
     }
 
+    // On V+, ConnectivityService generates blockedReasons based on bpf map contents even if the
+    // otherUid does not exist on device. So if allowlist chain (e.g. background chain) is enabled,
+    // blockedReasons for otherUid will not be BLOCKED_REASON_NONE.
     @AppModeFull(reason = "Cannot get WifiManager in instant app mode")
-    @Test
+    @Test @IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     public void testBlockedStatusCallback() throws Exception {
         // Cannot use @IgnoreUpTo(Build.VERSION_CODES.R) because this test also requires API 31
         // shims, and @IgnoreUpTo does not check that.
@@ -2500,9 +2537,10 @@
         final int otherUid = UserHandle.getUid(5, Process.FIRST_APPLICATION_UID);
         final Handler handler = new Handler(Looper.getMainLooper());
 
-        registerDefaultNetworkCallback(myUidCallback, handler);
-        runWithShellPermissionIdentity(() -> registerDefaultNetworkCallbackForUid(
-                otherUid, otherUidCallback, handler), NETWORK_SETTINGS);
+        networkCallbackRule.registerDefaultNetworkCallback(myUidCallback, handler);
+        runWithShellPermissionIdentity(
+                () -> networkCallbackRule.registerDefaultNetworkCallbackForUid(
+                        otherUid, otherUidCallback, handler), NETWORK_SETTINGS);
 
         final Network defaultNetwork = myUidCallback.expect(CallbackEntry.AVAILABLE).getNetwork();
         final List<DetailedBlockedStatusCallback> allCallbacks =
@@ -2558,14 +2596,14 @@
         assertNotNull(info);
         assertEquals(DetailedState.CONNECTED, info.getDetailedState());
 
-        final TestableNetworkCallback callback = new TestableNetworkCallback();
+        final TestableNetworkCallback callback;
         try {
             mCmShim.setLegacyLockdownVpnEnabled(true);
 
             // setLegacyLockdownVpnEnabled is asynchronous and only takes effect when the
             // ConnectivityService handler thread processes it. Ensure it has taken effect by doing
             // something that blocks until the handler thread is idle.
-            registerDefaultNetworkCallback(callback);
+            callback = networkCallbackRule.registerDefaultNetworkCallback();
             waitForAvailable(callback);
 
             // Test one of the effects of setLegacyLockdownVpnEnabled: the fact that any NetworkInfo
@@ -2832,9 +2870,9 @@
     private void registerTestOemNetworkPreferenceCallbacks(
             @NonNull final TestableNetworkCallback defaultCallback,
             @NonNull final TestableNetworkCallback systemDefaultCallback) {
-        registerDefaultNetworkCallback(defaultCallback);
+        networkCallbackRule.registerDefaultNetworkCallback(defaultCallback);
         runWithShellPermissionIdentity(() ->
-                registerSystemDefaultNetworkCallback(systemDefaultCallback,
+                networkCallbackRule.registerSystemDefaultNetworkCallback(systemDefaultCallback,
                         new Handler(Looper.getMainLooper())), NETWORK_SETTINGS);
     }
 
@@ -2950,18 +2988,18 @@
                         + " unless device supports WiFi",
                 mPackageManager.hasSystemFeature(FEATURE_WIFI));
 
-        final TestNetworkCallback cb = new TestNetworkCallback();
         try {
             // Wait for partial connectivity to be detected on the network
             final Network network = preparePartialConnectivity();
 
-            requestNetwork(makeWifiNetworkRequest(), cb);
+            final TestableNetworkCallback cb = networkCallbackRule.requestNetwork(
+                    makeWifiNetworkRequest());
             runAsShell(NETWORK_SETTINGS, () -> {
                 // The always bit is verified in NetworkAgentTest
                 mCm.setAcceptPartialConnectivity(network, false /* accept */, false /* always */);
             });
             // Reject partial connectivity network should cause the network being torn down
-            assertEquals(network, cb.waitForLost());
+            assertEquals(network, cb.eventuallyExpect(CallbackEntry.LOST).getNetwork());
         } finally {
             mHttpServer.stop();
             // Wifi will not automatically reconnect to the network. ensureWifiDisconnected cannot
@@ -2989,17 +3027,17 @@
         assumeTrue("testAcceptPartialConnectivity_validatedNetwork cannot execute"
                         + " unless device supports WiFi and telephony", canRunTest);
 
-        final TestableNetworkCallback wifiCb = new TestableNetworkCallback();
         try {
             // Ensure at least one default network candidate connected.
-            mCtsNetUtils.connectToCell();
+            networkCallbackRule.requestCell();
 
             final Network wifiNetwork = prepareUnvalidatedNetwork();
             // Default network should not be wifi ,but checking that wifi is not the default doesn't
             // guarantee that it won't become the default in the future.
             assertNotEquals(wifiNetwork, mCm.getActiveNetwork());
 
-            registerNetworkCallback(makeWifiNetworkRequest(), wifiCb);
+            final TestableNetworkCallback wifiCb = networkCallbackRule.registerNetworkCallback(
+                    makeWifiNetworkRequest());
             runAsShell(NETWORK_SETTINGS, () -> {
                 mCm.setAcceptUnvalidated(wifiNetwork, false /* accept */, false /* always */);
             });
@@ -3026,19 +3064,19 @@
         assumeTrue("testSetAvoidUnvalidated cannot execute"
                 + " unless device supports WiFi and telephony", canRunTest);
 
-        final TestableNetworkCallback wifiCb = new TestableNetworkCallback();
-        final TestableNetworkCallback defaultCb = new TestableNetworkCallback();
         final int previousAvoidBadWifi =
                 ConnectivitySettingsManager.getNetworkAvoidBadWifi(mContext);
 
         allowBadWifi();
 
         try {
-            final Network cellNetwork = mCtsNetUtils.connectToCell();
+            final Network cellNetwork = networkCallbackRule.requestCell();
             final Network wifiNetwork = prepareValidatedNetwork();
 
-            registerDefaultNetworkCallback(defaultCb);
-            registerNetworkCallback(makeWifiNetworkRequest(), wifiCb);
+            final TestableNetworkCallback defaultCb =
+                    networkCallbackRule.registerDefaultNetworkCallback();
+            final TestableNetworkCallback wifiCb = networkCallbackRule.registerNetworkCallback(
+                    makeWifiNetworkRequest());
 
             // Verify wifi is the default network.
             defaultCb.eventuallyExpect(CallbackEntry.AVAILABLE, NETWORK_CALLBACK_TIMEOUT_MS,
@@ -3101,20 +3139,11 @@
         });
     }
 
-    private Network expectNetworkHasCapability(Network network, int expectedNetCap, long timeout)
-            throws Exception {
-        final CompletableFuture<Network> future = new CompletableFuture();
-        final NetworkCallback cb = new NetworkCallback() {
-            @Override
-            public void onCapabilitiesChanged(Network n, NetworkCapabilities nc) {
-                if (n.equals(network) && nc.hasCapability(expectedNetCap)) {
-                    future.complete(network);
-                }
-            }
-        };
-
-        registerNetworkCallback(new NetworkRequest.Builder().build(), cb);
-        return future.get(timeout, TimeUnit.MILLISECONDS);
+    private Network expectNetworkHasCapability(Network network, int expectedNetCap, long timeout) {
+        return networkCallbackRule.registerNetworkCallback(new NetworkRequest.Builder().build())
+                .eventuallyExpect(CallbackEntry.NETWORK_CAPS_UPDATED, timeout,
+                        cb -> cb.getNetwork().equals(network)
+                                && cb.getCaps().hasCapability(expectedNetCap)).getNetwork();
     }
 
     private void prepareHttpServer() throws Exception {
@@ -3214,8 +3243,6 @@
 
         if (supportWifi) {
             mCtsNetUtils.ensureWifiDisconnected(null /* wifiNetworkToCheck */);
-        } else {
-            mCtsNetUtils.disconnectFromCell();
         }
 
         final CompletableFuture<Boolean> future = new CompletableFuture<>();
@@ -3226,7 +3253,7 @@
             if (supportWifi) {
                 mCtsNetUtils.ensureWifiConnected();
             } else {
-                mCtsNetUtils.connectToCell();
+                networkCallbackRule.requestCell();
             }
             assertTrue(future.get(LISTEN_ACTIVITY_TIMEOUT_MS, TimeUnit.MILLISECONDS));
         }, () -> {
@@ -3267,13 +3294,14 @@
 
         // For testing mobile data preferred uids feature, it needs both wifi and cell network.
         final Network wifiNetwork = mCtsNetUtils.ensureWifiConnected();
-        final Network cellNetwork = mCtsNetUtils.connectToCell();
-        final TestableNetworkCallback defaultTrackingCb = new TestableNetworkCallback();
-        final TestableNetworkCallback systemDefaultCb = new TestableNetworkCallback();
+        final Network cellNetwork = networkCallbackRule.requestCell();
         final Handler h = new Handler(Looper.getMainLooper());
-        runWithShellPermissionIdentity(() -> registerSystemDefaultNetworkCallback(
-                systemDefaultCb, h), NETWORK_SETTINGS);
-        registerDefaultNetworkCallback(defaultTrackingCb);
+        final TestableNetworkCallback systemDefaultCb = runWithShellPermissionIdentity(
+                () -> networkCallbackRule.registerSystemDefaultNetworkCallback(h),
+                NETWORK_SETTINGS);
+
+        final TestableNetworkCallback defaultTrackingCb =
+                networkCallbackRule.registerDefaultNetworkCallback();
 
         try {
             // CtsNetTestCases uid is not listed in MOBILE_DATA_PREFERRED_UIDS setting, so the
@@ -3342,7 +3370,7 @@
         // Create test network agent with restricted network.
         final NetworkCapabilities nc = new NetworkCapabilities.Builder()
                 .addTransportType(NetworkCapabilities.TRANSPORT_TEST)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .setNetworkSpecifier(CompatUtil.makeTestNetworkSpecifier(
                         TEST_RESTRICTED_NW_IFACE_NAME))
                 .build();
@@ -3376,23 +3404,23 @@
                 mContext, originalUidsAllowedOnRestrictedNetworks), NETWORK_SETTINGS);
 
         // File a restricted network request with permission first to hold the connection.
-        final TestableNetworkCallback testNetworkCb = new TestableNetworkCallback();
         final NetworkRequest testRequest = new NetworkRequest.Builder()
                 .addTransportType(NetworkCapabilities.TRANSPORT_TEST)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+                .removeCapability(NET_CAPABILITY_TRUSTED)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .setNetworkSpecifier(CompatUtil.makeTestNetworkSpecifier(
                         TEST_RESTRICTED_NW_IFACE_NAME))
                 .build();
-        runWithShellPermissionIdentity(() -> requestNetwork(testRequest, testNetworkCb),
+        final TestableNetworkCallback testNetworkCb = runWithShellPermissionIdentity(
+                () -> networkCallbackRule.requestNetwork(testRequest),
                 CONNECTIVITY_USE_RESTRICTED_NETWORKS);
 
         // File another restricted network request without permission.
         final TestableNetworkCallback restrictedNetworkCb = new TestableNetworkCallback();
         final NetworkRequest restrictedRequest = new NetworkRequest.Builder()
                 .addTransportType(NetworkCapabilities.TRANSPORT_TEST)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
-                .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
+                .removeCapability(NET_CAPABILITY_TRUSTED)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .setNetworkSpecifier(CompatUtil.makeTestNetworkSpecifier(
                         TEST_RESTRICTED_NW_IFACE_NAME))
                 .build();
@@ -3409,7 +3437,7 @@
                     NETWORK_CALLBACK_TIMEOUT_MS,
                     entry -> network.equals(entry.getNetwork())
                             && (!((CallbackEntry.CapabilitiesChanged) entry).getCaps()
-                            .hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)));
+                            .hasCapability(NET_CAPABILITY_NOT_RESTRICTED)));
             // CtsNetTestCases package doesn't hold CONNECTIVITY_USE_RESTRICTED_NETWORKS, so it
             // does not allow to bind socket to restricted network.
             assertThrows(IOException.class, () -> network.bindSocket(socket));
@@ -3427,13 +3455,13 @@
 
             if (TestUtils.shouldTestTApis()) {
                 // Uid is in allowed list. Try file network request again.
-                requestNetwork(restrictedRequest, restrictedNetworkCb);
+                networkCallbackRule.requestNetwork(restrictedRequest, restrictedNetworkCb);
                 // Verify that the network is restricted.
                 restrictedNetworkCb.eventuallyExpect(CallbackEntry.NETWORK_CAPS_UPDATED,
                         NETWORK_CALLBACK_TIMEOUT_MS,
                         entry -> network.equals(entry.getNetwork())
                                 && (!((CallbackEntry.CapabilitiesChanged) entry).getCaps()
-                                .hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)));
+                                .hasCapability(NET_CAPABILITY_NOT_RESTRICTED)));
             }
         } finally {
             agent.unregister();
@@ -3572,6 +3600,8 @@
         doTestFirewallBlocking(FIREWALL_CHAIN_DOZABLE, ALLOWLIST);
     }
 
+    // Disable test - needs to be fixed
+    @Ignore
     @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE) @ConnectivityModuleTest
     @AppModeFull(reason = "Socket cannot bind in instant app mode")
     public void testFirewallBlockingBackground() {
@@ -3726,63 +3756,263 @@
                 Process.myUid() + 1, EXPECT_OPEN);
     }
 
+    private int getBlockedReason(final int chain) {
+        switch(chain) {
+            case FIREWALL_CHAIN_DOZABLE:
+                return BLOCKED_REASON_DOZE;
+            case  FIREWALL_CHAIN_POWERSAVE:
+                return BLOCKED_REASON_BATTERY_SAVER;
+            case  FIREWALL_CHAIN_RESTRICTED:
+                return BLOCKED_REASON_RESTRICTED_MODE;
+            case  FIREWALL_CHAIN_LOW_POWER_STANDBY:
+                return BLOCKED_REASON_LOW_POWER_STANDBY;
+            case  FIREWALL_CHAIN_BACKGROUND:
+                return BLOCKED_REASON_APP_BACKGROUND;
+            case  FIREWALL_CHAIN_STANDBY:
+                return BLOCKED_REASON_APP_STANDBY;
+            case FIREWALL_CHAIN_METERED_DENY_USER:
+                return BLOCKED_METERED_REASON_USER_RESTRICTED;
+            case FIREWALL_CHAIN_METERED_DENY_ADMIN:
+                return BLOCKED_METERED_REASON_ADMIN_DISABLED;
+            case FIREWALL_CHAIN_OEM_DENY_1:
+            case FIREWALL_CHAIN_OEM_DENY_2:
+            case FIREWALL_CHAIN_OEM_DENY_3:
+                return BLOCKED_REASON_OEM_DENY;
+            default:
+                throw new IllegalArgumentException(
+                        "Failed to find blockedReasons for chain: " + chain);
+        }
+    }
+
+    private void doTestBlockedReasons_setUidFirewallRule(final int chain, final boolean metered)
+            throws Exception {
+        assumeTrue(mPackageManager.hasSystemFeature(FEATURE_WIFI));
+
+        // Store current Wi-Fi metered value and update metered value
+        final Network currentWifiNetwork = mCtsNetUtils.ensureWifiConnected();
+        final NetworkCapabilities wifiNetworkCapabilities = callWithShellPermissionIdentity(
+                () -> mCm.getNetworkCapabilities(currentWifiNetwork));
+        final String ssid = unquoteSSID(wifiNetworkCapabilities.getSsid());
+        final boolean oldMeteredValue = wifiNetworkCapabilities.isMetered();
+        final Network wifiNetwork =
+                setWifiMeteredStatusAndWait(ssid, metered, true /* waitForValidation */);
+
+        // Store current firewall chains status. This test operates on the chain that is passed in,
+        // but also always operates on FIREWALL_CHAIN_METERED_DENY_USER to ensure that metered
+        // chains are tested as well.
+        final int myUid = Process.myUid();
+        final boolean wasChainEnabled = runWithShellPermissionIdentity(
+                () -> mCm.getFirewallChainEnabled(chain), NETWORK_SETTINGS);
+        final int previousFirewallRule = runWithShellPermissionIdentity(
+                () -> mCm.getUidFirewallRule(chain, myUid));
+        final int previousMeteredDenyFirewallRule = runWithShellPermissionIdentity(
+                () -> mCm.getUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, myUid));
+
+        final DetailedBlockedStatusCallback cb = new DetailedBlockedStatusCallback();
+        networkCallbackRule.requestNetwork(makeWifiNetworkRequest(), cb);
+        testAndCleanup(() -> {
+            int blockedReasonsWithoutChain = BLOCKED_REASON_NONE;
+            int blockedReasonsWithChain = getBlockedReason(chain);
+            int blockedReasonsWithChainAndLockDown =
+                    getBlockedReason(chain) | BLOCKED_REASON_LOCKDOWN_VPN;
+            if (metered) {
+                blockedReasonsWithoutChain |= BLOCKED_METERED_REASON_USER_RESTRICTED;
+                blockedReasonsWithChain |= BLOCKED_METERED_REASON_USER_RESTRICTED;
+                blockedReasonsWithChainAndLockDown |= BLOCKED_METERED_REASON_USER_RESTRICTED;
+            }
+
+            // Set RULE_DENY on target chain and metered deny chain
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, true /* enable */);
+                mCm.setUidFirewallRule(chain, myUid, FIREWALL_RULE_DENY);
+                mCm.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, myUid,
+                        FIREWALL_RULE_DENY);
+            }, NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(wifiNetwork, blockedReasonsWithChain);
+
+            // Set VPN lockdown
+            final Range<Integer> myUidRange = new Range<>(myUid, myUid);
+            runWithShellPermissionIdentity(() -> setRequireVpnForUids(
+                    true /* requireVpn */, List.of(myUidRange)), NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(wifiNetwork,
+                    blockedReasonsWithChainAndLockDown);
+
+            // Unset VPN lockdown
+            runWithShellPermissionIdentity(() -> setRequireVpnForUids(
+                    false /* requireVpn */, List.of(myUidRange)), NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(wifiNetwork, blockedReasonsWithChain);
+
+            // Set RULE_ALLOW on target chain
+            runWithShellPermissionIdentity(
+                    () -> mCm.setUidFirewallRule(chain, myUid, FIREWALL_RULE_ALLOW),
+                    NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(wifiNetwork, blockedReasonsWithoutChain);
+
+            // Set RULE_ALLOW on metered deny chain
+            runWithShellPermissionIdentity(() -> mCm.setUidFirewallRule(
+                            FIREWALL_CHAIN_METERED_DENY_USER, myUid, FIREWALL_RULE_ALLOW),
+                    NETWORK_SETTINGS);
+            if (metered) {
+                cb.eventuallyExpectBlockedStatusCallback(wifiNetwork, BLOCKED_REASON_NONE);
+            }
+        }, /* cleanup */ () -> {
+            setWifiMeteredStatusAndWait(ssid, oldMeteredValue, false /* waitForValidation */);
+        }, /* cleanup */ () -> {
+            mCm.unregisterNetworkCallback(cb);
+        }, /* cleanup */ () -> {
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, wasChainEnabled);
+                try {
+                    mCm.setUidFirewallRule(chain, myUid, previousFirewallRule);
+                } catch (IllegalStateException ignored) {
+                    // Removing match causes an exception when the rule entry for the uid does
+                    // not exist. But this is fine and can be ignored.
+                }
+                try {
+                    mCm.setUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, myUid,
+                            previousMeteredDenyFirewallRule);
+                } catch (IllegalStateException ignored) {
+                    // Removing match causes an exception when the rule entry for the uid does
+                    // not exist. But this is fine and can be ignored.
+                }
+            }, NETWORK_SETTINGS);
+        });
+    }
+
+    @AppModeFull(reason = "Cannot get WifiManager in instant app mode")
+    @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE) @ConnectivityModuleTest
+    public void testBlockedReasons_setUidFirewallRule() throws Exception {
+        doTestBlockedReasons_setUidFirewallRule(FIREWALL_CHAIN_DOZABLE, true /* metered */);
+        doTestBlockedReasons_setUidFirewallRule(FIREWALL_CHAIN_STANDBY, false /* metered */);
+    }
+
+    private void doTestBlockedReasons_setFirewallChainEnabled(final int chain) {
+        // Store current firewall chains status.
+        final int myUid = Process.myUid();
+        // TODO(b/342508466): Use runAsShell
+        final boolean wasChainEnabled = runWithShellPermissionIdentity(
+                () -> mCm.getFirewallChainEnabled(chain), NETWORK_SETTINGS);
+        final int previousFirewallRule = runWithShellPermissionIdentity(
+                () -> mCm.getUidFirewallRule(chain, myUid), NETWORK_SETTINGS);
+
+        final DetailedBlockedStatusCallback cb = new DetailedBlockedStatusCallback();
+        networkCallbackRule.registerDefaultNetworkCallback(cb);
+        final Network network = cb.expect(CallbackEntry.AVAILABLE).getNetwork();
+        testAndCleanup(() -> {
+            // Disable chain and set RULE_DENY on target chain
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, false /* enable */);
+                mCm.setUidFirewallRule(chain, myUid, FIREWALL_RULE_DENY);
+            }, NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(network, BLOCKED_REASON_NONE);
+
+            // Enable chain
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, true /* enable */);
+            }, NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(network, getBlockedReason(chain));
+
+            // Disable chain
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, false /* enable */);
+            }, NETWORK_SETTINGS);
+            cb.eventuallyExpectBlockedStatusCallback(network, BLOCKED_REASON_NONE);
+        }, /* cleanup */ () -> {
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, wasChainEnabled);
+                try {
+                    mCm.setUidFirewallRule(chain, myUid, previousFirewallRule);
+                } catch (IllegalStateException ignored) {
+                    // Removing match causes an exception when the rule entry for the uid does
+                    // not exist. But this is fine and can be ignored.
+                }
+            }, NETWORK_SETTINGS);
+        });
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE) @ConnectivityModuleTest
+    public void testBlockedReasons_setFirewallChainEnabled() {
+        doTestBlockedReasons_setFirewallChainEnabled(FIREWALL_CHAIN_POWERSAVE);
+        doTestBlockedReasons_setFirewallChainEnabled(FIREWALL_CHAIN_OEM_DENY_1);
+    }
+
+    private void doTestBlockedReasons_replaceFirewallChain(
+            final int chain, final boolean isAllowList) {
+        // Store current firewall chains status.
+        final int myUid = Process.myUid();
+        final boolean wasChainEnabled = runWithShellPermissionIdentity(
+                () -> mCm.getFirewallChainEnabled(chain), NETWORK_SETTINGS);
+        final int previousFirewallRule = runWithShellPermissionIdentity(
+                () -> mCm.getUidFirewallRule(chain, myUid), NETWORK_SETTINGS);
+
+        final DetailedBlockedStatusCallback cb = new DetailedBlockedStatusCallback();
+        networkCallbackRule.registerDefaultNetworkCallback(cb);
+        final Network network = cb.expect(CallbackEntry.AVAILABLE).getNetwork();
+        testAndCleanup(() -> {
+            cb.eventuallyExpectBlockedStatusCallback(network, BLOCKED_REASON_NONE);
+
+            // Remove uid from the target chain and enable chain
+            runWithShellPermissionIdentity(() -> {
+                // Note that this removes *all* UIDs from the chain, not just the UID that is
+                // being tested. This is probably OK since FIREWALL_CHAIN_OEM_DENY_2 is unused
+                // in AOSP and FIREWALL_CHAIN_BACKGROUND is probably empty when running this
+                // test (since nothing is in the foreground).
+                //
+                // TODO(b/342508466): add a getFirewallUidChainContents or similar method to fetch
+                // chain contents, and update this test to use it.
+                mCm.replaceFirewallChain(chain, new int[0]);
+                mCm.setFirewallChainEnabled(chain, true /* enable */);
+            }, NETWORK_SETTINGS);
+
+            if (isAllowList) {
+                cb.eventuallyExpectBlockedStatusCallback(network, getBlockedReason(chain));
+            } else {
+                cb.assertNoBlockedStatusCallback();
+            }
+
+            // Put uid on the target chain
+            runWithShellPermissionIdentity(
+                    () -> mCm.replaceFirewallChain(chain, new int[]{myUid}), NETWORK_SETTINGS);
+
+            if (isAllowList) {
+                cb.eventuallyExpectBlockedStatusCallback(network, BLOCKED_REASON_NONE);
+            } else {
+                cb.eventuallyExpectBlockedStatusCallback(network, getBlockedReason(chain));
+            }
+
+            // Remove uid from the target chain
+            runWithShellPermissionIdentity(
+                    () -> mCm.replaceFirewallChain(chain, new int[0]), NETWORK_SETTINGS);
+
+            if (isAllowList) {
+                cb.eventuallyExpectBlockedStatusCallback(network, getBlockedReason(chain));
+            } else {
+                cb.eventuallyExpectBlockedStatusCallback(network, BLOCKED_REASON_NONE);
+            }
+        }, /* cleanup */ () -> {
+            runWithShellPermissionIdentity(() -> {
+                mCm.setFirewallChainEnabled(chain, wasChainEnabled);
+                try {
+                    mCm.setUidFirewallRule(chain, myUid, previousFirewallRule);
+                } catch (IllegalStateException ignored) {
+                    // Removing match causes an exception when the rule entry for the uid does
+                    // not exist. But this is fine and can be ignored.
+                }
+            }, NETWORK_SETTINGS);
+        });
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE) @ConnectivityModuleTest
+    public void testBlockedReasons_replaceFirewallChain() {
+        doTestBlockedReasons_replaceFirewallChain(
+                FIREWALL_CHAIN_BACKGROUND, true /* isAllowChain */);
+        doTestBlockedReasons_replaceFirewallChain(
+                FIREWALL_CHAIN_OEM_DENY_2, false /* isAllowChain */);
+    }
+
     private void assumeTestSApis() {
         // Cannot use @IgnoreUpTo(Build.VERSION_CODES.R) because this test also requires API 31
         // shims, and @IgnoreUpTo does not check that.
         assumeTrue(TestUtils.shouldTestSApis());
     }
-
-    private void unregisterRegisteredCallbacks() {
-        for (NetworkCallback callback: mRegisteredCallbacks) {
-            mCm.unregisterNetworkCallback(callback);
-        }
-    }
-
-    private void registerDefaultNetworkCallback(NetworkCallback callback) {
-        mCm.registerDefaultNetworkCallback(callback);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void registerDefaultNetworkCallback(NetworkCallback callback, Handler handler) {
-        mCm.registerDefaultNetworkCallback(callback, handler);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void registerNetworkCallback(NetworkRequest request, NetworkCallback callback) {
-        mCm.registerNetworkCallback(request, callback);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void registerSystemDefaultNetworkCallback(NetworkCallback callback, Handler handler) {
-        mCmShim.registerSystemDefaultNetworkCallback(callback, handler);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void registerDefaultNetworkCallbackForUid(int uid, NetworkCallback callback,
-            Handler handler) throws Exception {
-        mCmShim.registerDefaultNetworkCallbackForUid(uid, callback, handler);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void requestNetwork(NetworkRequest request, NetworkCallback callback) {
-        mCm.requestNetwork(request, callback);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void requestNetwork(NetworkRequest request, NetworkCallback callback, int timeoutSec) {
-        mCm.requestNetwork(request, callback, timeoutSec);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void registerBestMatchingNetworkCallback(NetworkRequest request,
-            NetworkCallback callback, Handler handler) {
-        mCm.registerBestMatchingNetworkCallback(request, callback, handler);
-        mRegisteredCallbacks.add(callback);
-    }
-
-    private void requestBackgroundNetwork(NetworkRequest request, NetworkCallback callback,
-            Handler handler) throws Exception {
-        mCmShim.requestBackgroundNetwork(request, callback, handler);
-        mRegisteredCallbacks.add(callback);
-    }
 }
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index b7e5205..61ebd8f 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -303,18 +303,6 @@
         fun expectOnAvailable(timeout: Long = TIMEOUT_MS): String {
             return available.get(timeout, TimeUnit.MILLISECONDS)
         }
-
-        fun expectOnUnavailable() {
-            // Assert that the future fails with the IllegalStateException from the
-            // completeExceptionally() call inside onUnavailable.
-            assertFailsWith(IllegalStateException::class) {
-                try {
-                    available.get(TIMEOUT_MS, TimeUnit.MILLISECONDS)
-                } catch (e: ExecutionException) {
-                    throw e.cause!!
-                }
-            }
-        }
     }
 
     private class EthernetOutcomeReceiver :
@@ -348,7 +336,9 @@
         }
     }
 
-    private fun isEthernetSupported() = em != null
+    private fun isEthernetSupported() : Boolean {
+        return context.getSystemService(EthernetManager::class.java) != null
+    }
 
     @Before
     fun setUp() {
@@ -899,6 +889,24 @@
     }
 
     @Test
+    fun testEnableDisableInterface_callbacks() {
+        val iface = createInterface()
+        val listener = EthernetStateListener()
+        addInterfaceStateListener(listener)
+        // Uses eventuallyExpect to account for interfaces that could already exist on device
+        listener.eventuallyExpect(iface, STATE_LINK_UP, ROLE_CLIENT)
+
+        disableInterface(iface).expectResult(iface.name)
+        listener.eventuallyExpect(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+
+        enableInterface(iface).expectResult(iface.name)
+        listener.expectCallback(iface, STATE_LINK_UP, ROLE_CLIENT)
+
+        disableInterface(iface).expectResult(iface.name)
+        listener.expectCallback(iface, STATE_LINK_DOWN, ROLE_CLIENT)
+    }
+
+    @Test
     fun testUpdateConfiguration_forBothIpConfigAndCapabilities() {
         val iface = createInterface()
         val cb = requestNetwork(ETH_REQUEST.copyWithEthernetSpecifier(iface.name))
diff --git a/tests/cts/net/src/android/net/cts/IpSecBaseTest.java b/tests/cts/net/src/android/net/cts/IpSecBaseTest.java
index 7f710d7..2a6c638 100644
--- a/tests/cts/net/src/android/net/cts/IpSecBaseTest.java
+++ b/tests/cts/net/src/android/net/cts/IpSecBaseTest.java
@@ -26,12 +26,15 @@
 import static android.system.OsConstants.FIONREAD;
 
 import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
 
 import android.content.Context;
 import android.net.ConnectivityManager;
 import android.net.IpSecAlgorithm;
 import android.net.IpSecManager;
 import android.net.IpSecTransform;
+import android.net.IpSecTransformState;
+import android.os.OutcomeReceiver;
 import android.platform.test.annotations.AppModeFull;
 import android.system.ErrnoException;
 import android.system.Os;
@@ -65,8 +68,12 @@
 import java.net.SocketImpl;
 import java.net.SocketOptions;
 import java.util.Arrays;
+import java.util.BitSet;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
 @RunWith(AndroidJUnit4.class)
@@ -83,6 +90,7 @@
     protected static final byte[] TEST_DATA = "Best test data ever!".getBytes();
     protected static final int DATA_BUFFER_LEN = 4096;
     protected static final int SOCK_TIMEOUT = 500;
+    protected static final int REPLAY_BITMAP_LEN_BYTE = 512;
 
     private static final byte[] KEY_DATA = {
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
@@ -122,6 +130,47 @@
                                 .getSystemService(Context.CONNECTIVITY_SERVICE);
     }
 
+    protected static void checkTransformState(
+            IpSecTransform transform,
+            long txHighestSeqNum,
+            long rxHighestSeqNum,
+            long packetCnt,
+            long byteCnt,
+            byte[] replayBitmap)
+            throws Exception {
+        final CompletableFuture<IpSecTransformState> futureIpSecTransform =
+                new CompletableFuture<>();
+        transform.requestIpSecTransformState(
+                Executors.newSingleThreadExecutor(),
+                new OutcomeReceiver<IpSecTransformState, RuntimeException>() {
+                    @Override
+                    public void onResult(IpSecTransformState state) {
+                        futureIpSecTransform.complete(state);
+                    }
+                });
+
+        final IpSecTransformState transformState =
+                futureIpSecTransform.get(SOCK_TIMEOUT, TimeUnit.MILLISECONDS);
+
+        assertEquals(txHighestSeqNum, transformState.getTxHighestSequenceNumber());
+        assertEquals(rxHighestSeqNum, transformState.getRxHighestSequenceNumber());
+        assertEquals(packetCnt, transformState.getPacketCount());
+        assertEquals(byteCnt, transformState.getByteCount());
+        assertArrayEquals(replayBitmap, transformState.getReplayBitmap());
+    }
+
+    protected static void checkTransformStateNoTraffic(IpSecTransform transform) throws Exception {
+        checkTransformState(transform, 0L, 0L, 0L, 0L, newReplayBitmap(0));
+    }
+
+    protected static byte[] newReplayBitmap(int receivedPktCnt) {
+        final BitSet bitSet = new BitSet(REPLAY_BITMAP_LEN_BYTE * 8);
+        for (int i = 0; i < receivedPktCnt; i++) {
+            bitSet.set(i);
+        }
+        return Arrays.copyOf(bitSet.toByteArray(), REPLAY_BITMAP_LEN_BYTE);
+    }
+
     /** Checks if an IPsec algorithm is enabled on the device */
     protected static boolean hasIpSecAlgorithm(String algorithm) {
         if (SdkLevel.isAtLeastS()) {
diff --git a/tests/cts/net/src/android/net/cts/IpSecManagerTest.java b/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
index fe86a90..b5f43d3 100644
--- a/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
@@ -63,13 +63,17 @@
 import static org.junit.Assert.fail;
 import static org.junit.Assume.assumeTrue;
 
+import android.net.InetAddresses;
 import android.net.IpSecAlgorithm;
 import android.net.IpSecManager;
 import android.net.IpSecManager.SecurityParameterIndex;
 import android.net.IpSecManager.UdpEncapsulationSocket;
 import android.net.IpSecTransform;
+import android.net.IpSecTransformState;
+import android.net.NetworkUtils;
 import android.net.TrafficStats;
 import android.os.Build;
+import android.os.OutcomeReceiver;
 import android.platform.test.annotations.AppModeFull;
 import android.system.ErrnoException;
 import android.system.Os;
@@ -79,6 +83,7 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.modules.utils.build.SdkLevel;
+import com.android.testutils.ConnectivityModuleTest;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.SkipMainlinePresubmit;
@@ -98,7 +103,11 @@
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
+@ConnectivityModuleTest
 @RunWith(AndroidJUnit4.class)
 @AppModeFull(reason = "Socket cannot bind in instant app mode")
 public class IpSecManagerTest extends IpSecBaseTest {
@@ -381,6 +390,22 @@
         assumeTrue("Not supported by kernel", isIpv6UdpEncapSupportedByKernel());
     }
 
+    // TODO: b/319532485 Figure out whether to support x86_32
+    private static boolean isRequestTransformStateSupportedByKernel() {
+        return NetworkUtils.isKernel64Bit() || !NetworkUtils.isKernelX86();
+    }
+
+    // Package private for use in IpSecManagerTunnelTest
+    static boolean isRequestTransformStateSupported() {
+        return SdkLevel.isAtLeastV() && isRequestTransformStateSupportedByKernel();
+    }
+
+    // Package private for use in IpSecManagerTunnelTest
+    static void assumeRequestIpSecTransformStateSupported() {
+        assumeTrue("Not supported before V", SdkLevel.isAtLeastV());
+        assumeTrue("Not supported by kernel", isRequestTransformStateSupportedByKernel());
+    }
+
     @Test
     public void testCreateTransformIpv4() throws Exception {
         doTestCreateTransform(IPV4_LOOPBACK, false);
@@ -426,6 +451,11 @@
             long uidTxDelta = 0;
             long uidRxDelta = 0;
             for (int i = 0; i < 100; i++) {
+                // Clear TrafficStats cache is needed to avoid rate-limit caching for
+                // TrafficStats API results on V+ devices.
+                if (SdkLevel.isAtLeastV()) {
+                    runAsShell(NETWORK_SETTINGS, () -> TrafficStats.clearRateLimitCaches());
+                }
                 uidTxDelta = TrafficStats.getUidTxPackets(Os.getuid()) - uidTxPackets;
                 uidRxDelta = TrafficStats.getUidRxPackets(Os.getuid()) - uidRxPackets;
 
@@ -500,6 +530,11 @@
         }
 
         private static void initStatsChecker() throws Exception {
+            // Clear TrafficStats cache is needed to avoid rate-limit caching for
+            // TrafficStats API results on V+ devices.
+            if (SdkLevel.isAtLeastV()) {
+                runAsShell(NETWORK_SETTINGS, () -> TrafficStats.clearRateLimitCaches());
+            }
             uidTxBytes = TrafficStats.getUidTxBytes(Os.getuid());
             uidRxBytes = TrafficStats.getUidRxBytes(Os.getuid());
             uidTxPackets = TrafficStats.getUidTxPackets(Os.getuid());
@@ -1596,4 +1631,65 @@
             assertTrue("Returned invalid port", encapSocket.getPort() != 0);
         }
     }
+
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    public void testRequestIpSecTransformState() throws Exception {
+        assumeRequestIpSecTransformStateSupported();
+
+        final InetAddress localAddr = InetAddresses.parseNumericAddress(IPV6_LOOPBACK);
+        try (SecurityParameterIndex spi = mISM.allocateSecurityParameterIndex(localAddr);
+                IpSecTransform transform =
+                        buildTransportModeTransform(spi, localAddr, null /* encapSocket*/)) {
+            final SocketPair<JavaUdpSocket> sockets =
+                    getJavaUdpSocketPair(localAddr, mISM, transform, false);
+
+            sockets.mLeftSock.sendTo(TEST_DATA, localAddr, sockets.mRightSock.getPort());
+            sockets.mRightSock.receive();
+
+            final int expectedPacketCount = 1;
+            final int expectedInnerPacketSize = TEST_DATA.length + UDP_HDRLEN;
+
+            checkTransformState(
+                    transform,
+                    expectedPacketCount,
+                    expectedPacketCount,
+                    2 * (long) expectedPacketCount,
+                    2 * (long) expectedInnerPacketSize,
+                    newReplayBitmap(expectedPacketCount));
+        }
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    public void testRequestIpSecTransformStateOnClosedTransform() throws Exception {
+        assumeRequestIpSecTransformStateSupported();
+
+        final InetAddress localAddr = InetAddresses.parseNumericAddress(IPV6_LOOPBACK);
+        final CompletableFuture<RuntimeException> futureError = new CompletableFuture<>();
+
+        try (SecurityParameterIndex spi = mISM.allocateSecurityParameterIndex(localAddr);
+                IpSecTransform transform =
+                        buildTransportModeTransform(spi, localAddr, null /* encapSocket*/)) {
+            transform.close();
+
+            transform.requestIpSecTransformState(
+                    Executors.newSingleThreadExecutor(),
+                    new OutcomeReceiver<IpSecTransformState, RuntimeException>() {
+                        @Override
+                        public void onResult(IpSecTransformState state) {
+                            fail("Expect to fail but received a state");
+                        }
+
+                        @Override
+                        public void onError(RuntimeException error) {
+                            futureError.complete(error);
+                        }
+                    });
+
+            assertTrue(
+                    futureError.get(SOCK_TIMEOUT, TimeUnit.MILLISECONDS)
+                            instanceof IllegalStateException);
+        }
+    }
 }
diff --git a/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java b/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
index 1ede5c1..22a51d6 100644
--- a/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
+++ b/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
@@ -19,7 +19,9 @@
 import static android.app.AppOpsManager.OP_MANAGE_IPSEC_TUNNELS;
 import static android.net.IpSecManager.UdpEncapsulationSocket;
 import static android.net.cts.IpSecManagerTest.assumeExperimentalIpv6UdpEncapSupported;
+import static android.net.cts.IpSecManagerTest.assumeRequestIpSecTransformStateSupported;
 import static android.net.cts.IpSecManagerTest.isIpv6UdpEncapSupported;
+import static android.net.cts.IpSecManagerTest.isRequestTransformStateSupported;
 import static android.net.cts.PacketUtils.AES_CBC_BLK_SIZE;
 import static android.net.cts.PacketUtils.AES_CBC_IV_LEN;
 import static android.net.cts.PacketUtils.BytePayload;
@@ -117,6 +119,8 @@
 
     private static final int TIMEOUT_MS = 500;
 
+    private static final int PACKET_COUNT = 5000;
+
     // Static state to reduce setup/teardown
     private static ConnectivityManager sCM;
     private static TestNetworkManager sTNM;
@@ -256,7 +260,7 @@
     }
 
     /* Test runnables for callbacks after IPsec tunnels are set up. */
-    private abstract class IpSecTunnelTestRunnable {
+    private interface IpSecTunnelTestRunnable {
         /**
          * Runs the test code, and returns the inner socket port, if any.
          *
@@ -282,8 +286,7 @@
                 throws Exception;
     }
 
-    private int getPacketSize(
-            int innerFamily, int outerFamily, boolean useEncap, boolean transportInTunnelMode) {
+    private static int getInnerPacketSize(int innerFamily, boolean transportInTunnelMode) {
         int expectedPacketSize = TEST_DATA.length + UDP_HDRLEN;
 
         // Inner Transport mode packet size
@@ -299,6 +302,13 @@
         // Inner IP Header
         expectedPacketSize += innerFamily == AF_INET ? IP4_HDRLEN : IP6_HDRLEN;
 
+        return expectedPacketSize;
+    }
+
+    private static int getPacketSize(
+            int innerFamily, int outerFamily, boolean useEncap, boolean transportInTunnelMode) {
+        int expectedPacketSize = getInnerPacketSize(innerFamily, transportInTunnelMode);
+
         // Tunnel mode transform size
         expectedPacketSize =
                 PacketUtils.calculateEspPacketSize(
@@ -401,6 +411,20 @@
                             spi, TEST_DATA, useEncap, expectedPacketSize);
                     socket.close();
 
+                    if (isRequestTransformStateSupported()) {
+                        final int innerPacketSize =
+                                getInnerPacketSize(innerFamily, transportInTunnelMode);
+
+                        checkTransformState(
+                                outTunnelTransform,
+                                seqNum,
+                                0L,
+                                seqNum,
+                                seqNum * (long) innerPacketSize,
+                                newReplayBitmap(0));
+                        checkTransformStateNoTraffic(inTunnelTransform);
+                    }
+
                     return innerSocketPort;
                 }
             };
@@ -524,6 +548,22 @@
 
                     socket.close();
 
+                    if (isRequestTransformStateSupported()) {
+                        final int innerFamily =
+                                localInner instanceof Inet4Address ? AF_INET : AF_INET6;
+                        final int innerPacketSize =
+                                getInnerPacketSize(innerFamily, transportInTunnelMode);
+
+                        checkTransformStateNoTraffic(outTunnelTransform);
+                        checkTransformState(
+                                inTunnelTransform,
+                                0L,
+                                seqNum,
+                                seqNum,
+                                seqNum * (long) innerPacketSize,
+                                newReplayBitmap(seqNum));
+                    }
+
                     return 0;
                 }
             };
@@ -1127,6 +1167,18 @@
         return innerSocketPort;
     }
 
+    private int buildTunnelNetworkAndRunTestsSimple(int spi, IpSecTunnelTestRunnable test)
+            throws Exception {
+        return buildTunnelNetworkAndRunTests(
+                LOCAL_INNER_6,
+                REMOTE_INNER_6,
+                LOCAL_OUTER_6,
+                REMOTE_OUTER_6,
+                spi,
+                null /* encapSocket */,
+                test);
+    }
+
     private static void receiveAndValidatePacket(JavaUdpSocket socket) throws Exception {
         byte[] socketResponseBytes = socket.receive();
         assertArrayEquals(TEST_DATA, socketResponseBytes);
@@ -1691,4 +1743,101 @@
         assumeExperimentalIpv6UdpEncapSupported();
         doTestMigrateTunnelModeTransform(AF_INET6, AF_INET6, true, false);
     }
+
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    public void testRequestIpSecTransformStateForRx() throws Exception {
+        assumeRequestIpSecTransformStateSupported();
+
+        final int spi = getRandomSpi(LOCAL_OUTER_6, REMOTE_OUTER_6);
+        buildTunnelNetworkAndRunTestsSimple(
+                spi,
+                (ipsecNetwork,
+                        tunnelIface,
+                        tunUtils,
+                        inTunnelTransform,
+                        outTunnelTransform,
+                        localOuter,
+                        remoteOuter,
+                        seqNum) -> {
+                    // Build a socket and send traffic
+                    final JavaUdpSocket socket = new JavaUdpSocket(LOCAL_INNER_6);
+                    ipsecNetwork.bindSocket(socket.mSocket);
+                    int innerSocketPort = socket.getPort();
+
+                    for (int i = 1; i < PACKET_COUNT + 1; i++) {
+                        byte[] pkt =
+                                getTunnelModePacket(
+                                        spi,
+                                        REMOTE_INNER_6,
+                                        LOCAL_INNER_6,
+                                        remoteOuter,
+                                        localOuter,
+                                        innerSocketPort,
+                                        0,
+                                        i);
+                        tunUtils.injectPacket(pkt);
+                        receiveAndValidatePacket(socket);
+                    }
+
+                    final int innerPacketSize = getInnerPacketSize(AF_INET6, false);
+                    checkTransformState(
+                            inTunnelTransform,
+                            0L,
+                            PACKET_COUNT,
+                            PACKET_COUNT,
+                            PACKET_COUNT * (long) innerPacketSize,
+                            newReplayBitmap(REPLAY_BITMAP_LEN_BYTE * 8));
+
+                    return innerSocketPort;
+                });
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    @Test
+    public void testRequestIpSecTransformStateForTx() throws Exception {
+        assumeRequestIpSecTransformStateSupported();
+
+        final int spi = getRandomSpi(LOCAL_OUTER_6, REMOTE_OUTER_6);
+        buildTunnelNetworkAndRunTestsSimple(
+                spi,
+                (ipsecNetwork,
+                        tunnelIface,
+                        tunUtils,
+                        inTunnelTransform,
+                        outTunnelTransform,
+                        localOuter,
+                        remoteOuter,
+                        seqNum) -> {
+                    // Build a socket and send traffic
+                    final JavaUdpSocket outSocket = new JavaUdpSocket(LOCAL_INNER_6);
+                    ipsecNetwork.bindSocket(outSocket.mSocket);
+                    int innerSocketPort = outSocket.getPort();
+
+                    int expectedPacketSize =
+                            getPacketSize(
+                                    AF_INET6,
+                                    AF_INET6,
+                                    false /* useEncap */,
+                                    false /* transportInTunnelMode */);
+
+                    for (int i = 0; i < PACKET_COUNT; i++) {
+                        outSocket.sendTo(TEST_DATA, REMOTE_INNER_6, innerSocketPort);
+                        tunUtils.awaitEspPacketNoPlaintext(
+                                spi, TEST_DATA, false /* useEncap */, expectedPacketSize);
+                    }
+
+                    final int innerPacketSize =
+                            getInnerPacketSize(AF_INET6, false /* transportInTunnelMode */);
+                    checkTransformState(
+                            outTunnelTransform,
+                            PACKET_COUNT,
+                            0L,
+                            PACKET_COUNT,
+                            PACKET_COUNT * (long) innerPacketSize,
+                            newReplayBitmap(0));
+
+                    return innerSocketPort;
+                });
+    }
 }
diff --git a/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java b/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
index 7ab73c2..06a827b 100644
--- a/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
+++ b/tests/cts/net/src/android/net/cts/MultinetworkApiTest.java
@@ -43,9 +43,9 @@
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.platform.app.InstrumentationRegistry;
 
+import com.android.testutils.AutoReleaseNetworkCallbackRule;
 import com.android.testutils.DeviceConfigRule;
 
-import org.junit.After;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -55,9 +55,13 @@
 
 @RunWith(AndroidJUnit4.class)
 public class MultinetworkApiTest {
-    @Rule
+    @Rule(order = 1)
     public final DeviceConfigRule mDeviceConfigRule = new DeviceConfigRule();
 
+    @Rule(order = 2)
+    public final AutoReleaseNetworkCallbackRule
+            mNetworkCallbackRule = new AutoReleaseNetworkCallbackRule();
+
     static {
         System.loadLibrary("nativemultinetwork_jni");
     }
@@ -93,13 +97,6 @@
         mCtsNetUtils = new CtsNetUtils(mContext);
     }
 
-    @After
-    public void tearDown() {
-        if (mCtsNetUtils.cellConnectAttempted()) {
-            mCtsNetUtils.disconnectFromCell();
-        }
-    }
-
     @Test
     public void testGetaddrinfo() throws Exception {
         for (Network network : getTestableNetworks()) {
@@ -268,14 +265,22 @@
      * Get all testable Networks with internet capability.
      */
     private Set<Network> getTestableNetworks() throws InterruptedException {
+        // Calling requestNetwork() to request a cell or Wi-Fi network via CtsNetUtils or
+        // NetworkCallbackRule requires the CHANGE_NETWORK_STATE permission. This permission cannot
+        // be granted to instant apps. Therefore, return currently available testable networks
+        // directly in instant mode.
+        if (mContext.getApplicationInfo().isInstantApp()) {
+            return new ArraySet<>(mCtsNetUtils.getTestableNetworks());
+        }
+
         // Obtain cell and Wi-Fi through CtsNetUtils (which uses NetworkCallbacks), as they may have
         // just been reconnected by the test using NetworkCallbacks, so synchronous calls may not
         // yet return them (synchronous calls and callbacks should not be mixed for a given
         // Network).
         final Set<Network> testableNetworks = new ArraySet<>();
         if (mContext.getPackageManager().hasSystemFeature(FEATURE_TELEPHONY)) {
-            if (!mCtsNetUtils.cellConnectAttempted()) {
-                mRequestedCellNetwork = mCtsNetUtils.connectToCell();
+            if (mRequestedCellNetwork == null) {
+                mRequestedCellNetwork = mNetworkCallbackRule.requestCell();
             }
             assertNotNull("Cell network requested but not obtained", mRequestedCellNetwork);
             testableNetworks.add(mRequestedCellNetwork);
diff --git a/tests/cts/net/src/android/net/cts/NetworkRequestTest.java b/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
index 6ec4e62..ff10e1a 100644
--- a/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
+++ b/tests/cts/net/src/android/net/cts/NetworkRequestTest.java
@@ -19,19 +19,19 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_DUN;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_FOTA;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
-import static android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_MMS;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_SUPL;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_TEMPORARILY_NOT_METERED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
 import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
 
-import static com.android.testutils.DevSdkIgnoreRuleKt.VANILLA_ICE_CREAM;
-
 import static com.google.common.truth.Truth.assertThat;
 
 import static junit.framework.Assert.fail;
@@ -66,6 +66,7 @@
 import com.android.networkstack.apishim.common.UnsupportedApiLevelException;
 import com.android.testutils.ConnectivityModuleTest;
 import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 
 import org.junit.Rule;
@@ -511,30 +512,20 @@
         assertArrayEquals(netCapabilities, nr.getCapabilities());
     }
 
-    @Test @IgnoreUpTo(VANILLA_ICE_CREAM)
+    // Default capabilities and default forbidden capabilities must not be changed on U- because
+    // this could cause the system server crash when there is a module rollback (b/313030307)
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.R) @IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     public void testDefaultCapabilities() {
         final NetworkRequest defaultNR = new NetworkRequest.Builder().build();
-        assertTrue(defaultNR.hasForbiddenCapability(NET_CAPABILITY_LOCAL_NETWORK));
-        assertFalse(defaultNR.hasCapability(NET_CAPABILITY_LOCAL_NETWORK));
+
+        assertEquals(4, defaultNR.getCapabilities().length);
+        assertTrue(defaultNR.hasCapability(NET_CAPABILITY_NOT_RESTRICTED));
+        assertTrue(defaultNR.hasCapability(NET_CAPABILITY_TRUSTED));
         assertTrue(defaultNR.hasCapability(NET_CAPABILITY_NOT_VPN));
+        assertTrue(defaultNR.hasCapability(NET_CAPABILITY_NOT_VCN_MANAGED));
 
-        final NetworkCapabilities emptyNC =
-                NetworkCapabilities.Builder.withoutDefaultCapabilities().build();
-        assertFalse(defaultNR.canBeSatisfiedBy(emptyNC));
-
-        // defaultNC represent the capabilities of a network agent, so they must not contain
-        // forbidden capabilities by default.
-        final NetworkCapabilities defaultNC = new NetworkCapabilities.Builder().build();
-        assertArrayEquals(new int[0], defaultNC.getForbiddenCapabilities());
-        // A default NR can be satisfied by default NC.
-        assertTrue(defaultNR.canBeSatisfiedBy(defaultNC));
-
-        // Conversely, network requests have forbidden capabilities by default to manage
-        // backward compatibility, so test that these forbidden capabilities are in place.
-        // Starting in V, NET_CAPABILITY_LOCAL_NETWORK is introduced but is not seen by
-        // default, thanks to a default forbidden capability in NetworkRequest.
-        defaultNC.addCapability(NET_CAPABILITY_LOCAL_NETWORK);
-        assertFalse(defaultNR.canBeSatisfiedBy(defaultNC));
+        assertEquals(0, defaultNR.getForbiddenCapabilities().length);
     }
 
     @Test
diff --git a/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java b/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
index 6a019b7..2315940 100644
--- a/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/NetworkStatsManagerTest.java
@@ -805,7 +805,7 @@
                 // harness, which is untagged, won't cause a failure.
                 long firstTotal = resultsWithTraffic.get(0).total;
                 for (QueryResult queryResult : resultsWithTraffic) {
-                    assertWithinPercentage(queryResult + "", firstTotal, queryResult.total, 12);
+                    assertWithinPercentage(queryResult + "", firstTotal, queryResult.total, 16);
                 }
 
                 // Expect to see no traffic when querying for any tag in tagsWithNoTraffic or any
diff --git a/tests/cts/net/src/android/net/cts/NsdManagerDownstreamTetheringTest.kt b/tests/cts/net/src/android/net/cts/NsdManagerDownstreamTetheringTest.kt
index 1b1f367..284fcae 100644
--- a/tests/cts/net/src/android/net/cts/NsdManagerDownstreamTetheringTest.kt
+++ b/tests/cts/net/src/android/net/cts/NsdManagerDownstreamTetheringTest.kt
@@ -28,7 +28,9 @@
 import com.android.testutils.ConnectivityModuleTest
 import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.NsdDiscoveryRecord
 import com.android.testutils.TapPacketReader
+import com.android.testutils.pollForQuery
 import com.android.testutils.tryTest
 import java.util.Random
 import kotlin.test.assertEquals
@@ -72,7 +74,7 @@
 
         tryTest {
             downstreamIface = createTestInterface()
-            val iface = tetheredInterface
+            val iface = mTetheredInterfaceRequester.getInterface()
             assertEquals(iface, downstreamIface?.interfaceName)
             val request = TetheringRequest.Builder(TETHERING_ETHERNET)
                 .setConnectivityScope(CONNECTIVITY_SCOPE_LOCAL).build()
@@ -115,7 +117,7 @@
 
         tryTest {
             downstreamIface = createTestInterface()
-            val iface = tetheredInterface
+            val iface = mTetheredInterfaceRequester.getInterface()
             assertEquals(iface, downstreamIface?.interfaceName)
 
             val localAddr = LinkAddress("192.0.2.3/28")
diff --git a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
index ce2c2c1..be80787 100644
--- a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
@@ -39,19 +39,6 @@
 import android.net.TestNetworkManager
 import android.net.TestNetworkSpecifier
 import android.net.connectivity.ConnectivityCompatChanges
-import android.net.cts.NsdDiscoveryRecord.DiscoveryEvent.DiscoveryStarted
-import android.net.cts.NsdDiscoveryRecord.DiscoveryEvent.DiscoveryStopped
-import android.net.cts.NsdDiscoveryRecord.DiscoveryEvent.ServiceFound
-import android.net.cts.NsdDiscoveryRecord.DiscoveryEvent.ServiceLost
-import android.net.cts.NsdRegistrationRecord.RegistrationEvent.RegistrationFailed
-import android.net.cts.NsdRegistrationRecord.RegistrationEvent.ServiceRegistered
-import android.net.cts.NsdRegistrationRecord.RegistrationEvent.ServiceUnregistered
-import android.net.cts.NsdResolveRecord.ResolveEvent.ResolutionStopped
-import android.net.cts.NsdResolveRecord.ResolveEvent.ServiceResolved
-import android.net.cts.NsdResolveRecord.ResolveEvent.StopResolutionFailed
-import android.net.cts.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.ServiceUpdated
-import android.net.cts.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.ServiceUpdatedLost
-import android.net.cts.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.UnregisterCallbackSucceeded
 import android.net.cts.util.CtsNetUtils
 import android.net.nsd.DiscoveryRequest
 import android.net.nsd.NsdManager
@@ -78,9 +65,12 @@
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.compatibility.common.util.PollingCheck
 import com.android.compatibility.common.util.PropertyUtil
+import com.android.compatibility.common.util.SystemUtil
 import com.android.modules.utils.build.SdkLevel.isAtLeastU
 import com.android.net.module.util.DnsPacket
+import com.android.net.module.util.DnsPacket.ANSECTION
 import com.android.net.module.util.HexDump
+import com.android.net.module.util.HexDump.hexStringToByteArray
 import com.android.net.module.util.NetworkStackConstants.IPV6_ADDR_LEN
 import com.android.net.module.util.PacketBuilder
 import com.android.testutils.ConnectivityModuleTest
@@ -89,15 +79,41 @@
 import com.android.testutils.DevSdkIgnoreRunner
 import com.android.testutils.DeviceConfigRule
 import com.android.testutils.NSResponder
+import com.android.testutils.NsdDiscoveryRecord
+import com.android.testutils.NsdDiscoveryRecord.DiscoveryEvent.DiscoveryStarted
+import com.android.testutils.NsdDiscoveryRecord.DiscoveryEvent.DiscoveryStopped
+import com.android.testutils.NsdDiscoveryRecord.DiscoveryEvent.ServiceFound
+import com.android.testutils.NsdDiscoveryRecord.DiscoveryEvent.ServiceLost
+import com.android.testutils.NsdEvent
+import com.android.testutils.NsdRecord
+import com.android.testutils.NsdRegistrationRecord
+import com.android.testutils.NsdRegistrationRecord.RegistrationEvent.RegistrationFailed
+import com.android.testutils.NsdRegistrationRecord.RegistrationEvent.ServiceRegistered
+import com.android.testutils.NsdRegistrationRecord.RegistrationEvent.ServiceUnregistered
+import com.android.testutils.NsdResolveRecord
+import com.android.testutils.NsdResolveRecord.ResolveEvent.ResolutionStopped
+import com.android.testutils.NsdResolveRecord.ResolveEvent.ServiceResolved
+import com.android.testutils.NsdResolveRecord.ResolveEvent.StopResolutionFailed
+import com.android.testutils.NsdServiceInfoCallbackRecord
+import com.android.testutils.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.ServiceUpdated
+import com.android.testutils.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.ServiceUpdatedLost
+import com.android.testutils.NsdServiceInfoCallbackRecord.ServiceInfoCallbackEvent.UnregisterCallbackSucceeded
 import com.android.testutils.RecorderCallback.CallbackEntry.CapabilitiesChanged
 import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
 import com.android.testutils.TapPacketReader
+import com.android.testutils.TestDnsPacket
 import com.android.testutils.TestableNetworkAgent
 import com.android.testutils.TestableNetworkAgent.CallbackEntry.OnNetworkCreated
 import com.android.testutils.TestableNetworkCallback
+import com.android.testutils.assertContainsExactly
 import com.android.testutils.assertEmpty
 import com.android.testutils.filters.CtsNetTestCasesMaxTargetSdk30
 import com.android.testutils.filters.CtsNetTestCasesMaxTargetSdk33
+import com.android.testutils.pollForAdvertisement
+import com.android.testutils.pollForMdnsPacket
+import com.android.testutils.pollForProbe
+import com.android.testutils.pollForQuery
+import com.android.testutils.pollForReply
 import com.android.testutils.runAsShell
 import com.android.testutils.tryTest
 import com.android.testutils.waitForIdle
@@ -126,6 +142,7 @@
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
+import kotlin.test.assertNotEquals
 
 private const val TAG = "NsdManagerTest"
 private const val TIMEOUT_MS = 2000L
@@ -137,6 +154,9 @@
 private const val DBG = false
 private const val TEST_PORT = 12345
 private const val MDNS_PORT = 5353.toShort()
+private const val TYPE_KEY = 25
+private const val QCLASS_INTERNET = 0x0001
+private const val NAME_RECORDS_TTL_MILLIS: Long = 120
 private val multicastIpv6Addr = parseNumericAddress("ff02::fb") as Inet6Address
 private val testSrcAddr = parseNumericAddress("2001:db8::123") as Inet6Address
 
@@ -166,6 +186,12 @@
     private val serviceType2 = "_nmt%09d._tcp".format(Random().nextInt(1_000_000_000))
     private val customHostname = "NsdTestHost%09d".format(Random().nextInt(1_000_000_000))
     private val customHostname2 = "NsdTestHost%09d".format(Random().nextInt(1_000_000_000))
+    private val publicKey = hexStringToByteArray(
+            "0201030dc141d0637960b98cbc12cfca"
+                    + "221d2879dac26ee5b460e9007c992e19"
+                    + "02d897c391b03764d448f7d0c772fdb0"
+                    + "3b1d9d6d52ff8886769e8e2362513565"
+                    + "270962d3")
     private val handlerThread = HandlerThread(NsdManagerTest::class.java.simpleName)
     private val ctsNetUtils by lazy{ CtsNetUtils(context) }
 
@@ -1450,10 +1476,8 @@
         handlerThread.waitForIdle(TIMEOUT_MS)
 
         tryTest {
-            repeat(3) {
-                assertNotNull(packetReader.pollForAdvertisement(serviceName, serviceType),
-                        "Expect 3 announcements sent after initial probing")
-            }
+            assertNotNull(packetReader.pollForAdvertisement(serviceName, serviceType),
+                "No announcements sent after initial probing")
 
             assertEquals(si.serviceName, registeredService.serviceName)
             assertEquals(si.hostname, registeredService.hostname)
@@ -1887,6 +1911,64 @@
         }
     }
 
+    @Test
+    fun testQueryWhenKnownAnswerSuppressionFlagSet() {
+        // The flag may be removed in the future but known-answer suppression should be enabled by
+        // default in that case. The rule will reset flags automatically on teardown.
+        deviceConfigRule.setConfig(NAMESPACE_TETHERING, "test_nsd_query_with_known_answer", "1")
+
+        // Register service on testNetwork1
+        val discoveryRecord = NsdDiscoveryRecord()
+        val packetReader = TapPacketReader(Handler(handlerThread.looper),
+                testNetwork1.iface.fileDescriptor.fileDescriptor, 1500 /* maxPacketSize */)
+        packetReader.startAsyncForTest()
+        handlerThread.waitForIdle(TIMEOUT_MS)
+
+        nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD,
+                testNetwork1.network, { it.run() }, discoveryRecord)
+
+        tryTest {
+            discoveryRecord.expectCallback<DiscoveryStarted>()
+            assertNotNull(packetReader.pollForQuery("$serviceType.local", DnsResolver.TYPE_PTR))
+            /*
+            Generated with:
+            scapy.raw(scapy.DNS(rd=0, qr=1, aa=1, qd = None, an =
+                scapy.DNSRR(rrname='_nmt123456789._tcp.local', type='PTR', ttl=120,
+                rdata='NsdTest123456789._nmt123456789._tcp.local'))).hex()
+             */
+            val ptrResponsePayload = HexDump.hexStringToByteArray("0000840000000001000000000d5f6e" +
+                    "6d74313233343536373839045f746370056c6f63616c00000c000100000078002b104e736454" +
+                    "6573743132333435363738390d5f6e6d74313233343536373839045f746370056c6f63616c00")
+
+            replaceServiceNameAndTypeWithTestSuffix(ptrResponsePayload)
+            packetReader.sendResponse(buildMdnsPacket(ptrResponsePayload))
+
+            val serviceFound = discoveryRecord.expectCallback<ServiceFound>()
+            serviceFound.serviceInfo.let {
+                assertEquals(serviceName, it.serviceName)
+                // Discovered service types have a dot at the end
+                assertEquals("$serviceType.", it.serviceType)
+                assertEquals(testNetwork1.network, it.network)
+                // ServiceFound does not provide port, address or attributes (only information
+                // available in the PTR record is included in that callback, regardless of whether
+                // other records exist).
+                assertEquals(0, it.port)
+                assertEmpty(it.hostAddresses)
+                assertEquals(0, it.attributes.size)
+            }
+
+            // Expect the second query with a known answer
+            val query = packetReader.pollForMdnsPacket { pkt ->
+                pkt.isQueryFor("$serviceType.local", DnsResolver.TYPE_PTR) &&
+                        pkt.isReplyFor("$serviceType.local", DnsResolver.TYPE_PTR)
+            }
+            assertNotNull(query)
+        } cleanup {
+            nsdManager.stopServiceDiscovery(discoveryRecord)
+            discoveryRecord.expectCallback<DiscoveryStopped>()
+        }
+    }
+
     private fun makeLinkLocalAddressOfOtherDeviceOnPrefix(network: Network): Inet6Address {
         val lp = cm.getLinkProperties(network) ?: fail("No LinkProperties for net $network")
         // Expect to have a /64 link-local address
@@ -1968,7 +2050,7 @@
     }
 
     @Test
-    fun testAdvertisingAndDiscovery_multipleRegistrationsForSameCustomHost_unionOfAddressesFound() {
+    fun testAdvertisingAndDiscovery_multipleRegistrationsForSameCustomHost_hostRenamed() {
         val hostAddresses1 = listOf(
                 parseNumericAddress("192.0.2.23"),
                 parseNumericAddress("2001:db8::1"),
@@ -1976,9 +2058,6 @@
         val hostAddresses2 = listOf(
                 parseNumericAddress("192.0.2.24"),
                 parseNumericAddress("2001:db8::3"))
-        val hostAddresses3 = listOf(
-                parseNumericAddress("2001:db8::3"),
-                parseNumericAddress("2001:db8::5"))
         val si1 = NsdServiceInfo().also {
             it.network = testNetwork1.network
             it.hostname = customHostname
@@ -1992,18 +2071,9 @@
             it.hostname = customHostname
             it.hostAddresses = hostAddresses2
         }
-        val si3 = NsdServiceInfo().also {
-            it.network = testNetwork1.network
-            it.serviceName = serviceName3
-            it.serviceType = serviceType
-            it.port = TEST_PORT + 1
-            it.hostname = customHostname
-            it.hostAddresses = hostAddresses3
-        }
 
         val registrationRecord1 = NsdRegistrationRecord()
         val registrationRecord2 = NsdRegistrationRecord()
-        val registrationRecord3 = NsdRegistrationRecord()
 
         val discoveryRecord = NsdDiscoveryRecord()
         tryTest {
@@ -2013,27 +2083,13 @@
             nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD,
                     testNetwork1.network, Executor { it.run() }, discoveryRecord)
 
-            val discoveredInfo1 = discoveryRecord.waitForServiceDiscovered(
+            val discoveredInfo = discoveryRecord.waitForServiceDiscovered(
                     serviceName, serviceType, testNetwork1.network)
-            val resolvedInfo1 = resolveService(discoveredInfo1)
+            val resolvedInfo = resolveService(discoveredInfo)
 
-            assertEquals(TEST_PORT, resolvedInfo1.port)
-            assertEquals(si1.hostname, resolvedInfo1.hostname)
-            assertAddressEquals(
-                    hostAddresses1 + hostAddresses2,
-                    resolvedInfo1.hostAddresses)
-
-            registerService(registrationRecord3, si3)
-
-            val discoveredInfo2 = discoveryRecord.waitForServiceDiscovered(
-                    serviceName3, serviceType, testNetwork1.network)
-            val resolvedInfo2 = resolveService(discoveredInfo2)
-
-            assertEquals(TEST_PORT + 1, resolvedInfo2.port)
-            assertEquals(si2.hostname, resolvedInfo2.hostname)
-            assertAddressEquals(
-                    hostAddresses1 + hostAddresses2 + hostAddresses3,
-                    resolvedInfo2.hostAddresses)
+            assertEquals(TEST_PORT, resolvedInfo.port)
+            assertNotEquals(si1.hostname, resolvedInfo.hostname)
+            assertAddressEquals(hostAddresses2, resolvedInfo.hostAddresses)
         } cleanupStep {
             nsdManager.stopServiceDiscovery(discoveryRecord)
 
@@ -2041,7 +2097,6 @@
         } cleanup {
             nsdManager.unregisterService(registrationRecord1)
             nsdManager.unregisterService(registrationRecord2)
-            nsdManager.unregisterService(registrationRecord3)
         }
     }
 
@@ -2106,6 +2161,343 @@
         }
     }
 
+    @Test
+    fun testRegisterService_registerImmediatelyAfterUnregister_serviceFound() {
+        val info1 = makeTestServiceInfo(network = testNetwork1.network).apply {
+            serviceName = "service11111"
+            port = 11111
+        }
+        val info2 = makeTestServiceInfo(network = testNetwork1.network).apply {
+            serviceName = "service22222"
+            port = 22222
+        }
+        val registrationRecord1 = NsdRegistrationRecord()
+        val discoveryRecord1 = NsdDiscoveryRecord()
+        val registrationRecord2 = NsdRegistrationRecord()
+        val discoveryRecord2 = NsdDiscoveryRecord()
+        tryTest {
+            registerService(registrationRecord1, info1)
+            nsdManager.discoverServices(serviceType,
+                    NsdManager.PROTOCOL_DNS_SD, testNetwork1.network, { it.run() },
+                    discoveryRecord1)
+            discoveryRecord1.waitForServiceDiscovered(info1.serviceName,
+                    serviceType, testNetwork1.network)
+            nsdManager.stopServiceDiscovery(discoveryRecord1)
+
+            nsdManager.unregisterService(registrationRecord1)
+            registerService(registrationRecord2, info2)
+            nsdManager.discoverServices(serviceType,
+                    NsdManager.PROTOCOL_DNS_SD, testNetwork1.network, { it.run() },
+                    discoveryRecord2)
+            val infoDiscovered = discoveryRecord2.waitForServiceDiscovered(info2.serviceName,
+                    serviceType, testNetwork1.network)
+            val infoResolved = resolveService(infoDiscovered)
+            assertEquals(22222, infoResolved.port)
+        } cleanupStep {
+            nsdManager.stopServiceDiscovery(discoveryRecord2)
+            discoveryRecord2.expectCallback<DiscoveryStopped>()
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord2)
+        }
+    }
+
+    @Test
+    fun testAdvertisingAndDiscovery_reregisterCustomHostWithDifferentAddresses_newAddressesFound() {
+        val si1 = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.hostname = customHostname
+            it.hostAddresses = listOf(
+                    parseNumericAddress("192.0.2.23"),
+                    parseNumericAddress("2001:db8::1"))
+        }
+        val si2 = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.serviceName = serviceName
+            it.serviceType = serviceType
+            it.hostname = customHostname
+            it.port = TEST_PORT
+        }
+        val si3 = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.hostname = customHostname
+            it.hostAddresses = listOf(
+                    parseNumericAddress("192.0.2.24"),
+                    parseNumericAddress("2001:db8::2"))
+        }
+
+        val registrationRecord1 = NsdRegistrationRecord()
+        val registrationRecord2 = NsdRegistrationRecord()
+        val registrationRecord3 = NsdRegistrationRecord()
+
+        val discoveryRecord = NsdDiscoveryRecord()
+
+        tryTest {
+            registerService(registrationRecord1, si1)
+            registerService(registrationRecord2, si2)
+
+            nsdManager.unregisterService(registrationRecord1)
+            registrationRecord1.expectCallback<ServiceUnregistered>()
+
+            registerService(registrationRecord3, si3)
+
+            nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD,
+                    testNetwork1.network, Executor { it.run() }, discoveryRecord)
+            val discoveredInfo = discoveryRecord.waitForServiceDiscovered(
+                    serviceName, serviceType, testNetwork1.network)
+            val resolvedInfo = resolveService(discoveredInfo)
+
+            assertEquals(serviceName, discoveredInfo.serviceName)
+            assertEquals(TEST_PORT, resolvedInfo.port)
+            assertEquals(customHostname, resolvedInfo.hostname)
+            assertAddressEquals(
+                    listOf(parseNumericAddress("192.0.2.24"), parseNumericAddress("2001:db8::2")),
+                    resolvedInfo.hostAddresses)
+        } cleanupStep {
+            nsdManager.stopServiceDiscovery(discoveryRecord)
+            discoveryRecord.expectCallbackEventually<DiscoveryStopped>()
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord2)
+            nsdManager.unregisterService(registrationRecord3)
+        }
+    }
+
+    @Test
+    fun testAdvertising_registerServiceAndPublicKey_keyAnnounced() {
+        val si = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.serviceType = serviceType
+            it.serviceName = serviceName
+            it.port = TEST_PORT
+            it.publicKey = publicKey
+        }
+        val packetReader = TapPacketReader(Handler(handlerThread.looper),
+                testNetwork1.iface.fileDescriptor.fileDescriptor, 1500 /* maxPacketSize */)
+        packetReader.startAsyncForTest()
+        handlerThread.waitForIdle(TIMEOUT_MS)
+
+        val registrationRecord = NsdRegistrationRecord()
+        val discoveryRecord = NsdDiscoveryRecord()
+        tryTest {
+            registerService(registrationRecord, si)
+
+            val announcement = packetReader.pollForReply(
+                "$serviceName.$serviceType.local",
+                TYPE_KEY
+            )
+            assertNotNull(announcement)
+            val keyRecords = announcement.records[ANSECTION].filter { it.nsType == TYPE_KEY }
+            assertEquals(1, keyRecords.size)
+            val actualRecord = keyRecords.get(0)
+            assertEquals(TYPE_KEY, actualRecord.nsType)
+            assertEquals("$serviceName.$serviceType.local", actualRecord.dName)
+            assertEquals(NAME_RECORDS_TTL_MILLIS, actualRecord.ttl)
+            assertArrayEquals(publicKey, actualRecord.rr)
+
+            nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD,
+                    testNetwork1.network, Executor { it.run() }, discoveryRecord)
+
+            val discoveredInfo1 = discoveryRecord.waitForServiceDiscovered(
+                    serviceName, serviceType, testNetwork1.network)
+            val resolvedInfo1 = resolveService(discoveredInfo1)
+
+            assertEquals(serviceName, discoveredInfo1.serviceName)
+            assertEquals(TEST_PORT, resolvedInfo1.port)
+        } cleanupStep {
+            nsdManager.stopServiceDiscovery(discoveryRecord)
+
+            discoveryRecord.expectCallback<DiscoveryStopped>()
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord)
+        }
+    }
+
+    @Test
+    fun testAdvertising_registerCustomHostAndPublicKey_keyAnnounced() {
+        val si = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.hostname = customHostname
+            it.hostAddresses = listOf(
+                    parseNumericAddress("192.0.2.23"),
+                    parseNumericAddress("2001:db8::1"),
+                    parseNumericAddress("2001:db8::2"))
+            it.publicKey = publicKey
+        }
+        val packetReader = TapPacketReader(Handler(handlerThread.looper),
+                testNetwork1.iface.fileDescriptor.fileDescriptor, 1500 /* maxPacketSize */)
+        packetReader.startAsyncForTest()
+        handlerThread.waitForIdle(TIMEOUT_MS)
+
+        val registrationRecord = NsdRegistrationRecord()
+        tryTest {
+            registerService(registrationRecord, si)
+
+            val announcement = packetReader.pollForReply("$customHostname.local", TYPE_KEY)
+            assertNotNull(announcement)
+            val keyRecords = announcement.records[ANSECTION].filter { it.nsType == TYPE_KEY }
+            assertEquals(1, keyRecords.size)
+            val actualRecord = keyRecords.get(0)
+            assertEquals(TYPE_KEY, actualRecord.nsType)
+            assertEquals("$customHostname.local", actualRecord.dName)
+            assertEquals(NAME_RECORDS_TTL_MILLIS, actualRecord.ttl)
+            assertArrayEquals(publicKey, actualRecord.rr)
+
+            // This test case focuses on key announcement so we don't check the details of the
+            // announcement of the custom host addresses.
+            val addressRecords = announcement.records[ANSECTION].filter {
+                it.nsType == DnsResolver.TYPE_AAAA ||
+                        it.nsType == DnsResolver.TYPE_A
+            }
+            assertEquals(3, addressRecords.size)
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord)
+        }
+    }
+
+    @Test
+    fun testAdvertising_registerTwoServicesWithSameCustomHostAndPublicKey_keyAnnounced() {
+        val si1 = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.serviceType = serviceType
+            it.serviceName = serviceName
+            it.port = TEST_PORT
+            it.hostname = customHostname
+            it.hostAddresses = listOf(
+                parseNumericAddress("192.0.2.23"),
+                parseNumericAddress("2001:db8::1"),
+                parseNumericAddress("2001:db8::2"))
+            it.publicKey = publicKey
+        }
+        val si2 = NsdServiceInfo().also {
+            it.network = testNetwork1.network
+            it.serviceType = serviceType2
+            it.serviceName = serviceName2
+            it.port = TEST_PORT + 1
+            it.hostname = customHostname
+            it.hostAddresses = listOf()
+            it.publicKey = publicKey
+        }
+        val packetReader = TapPacketReader(Handler(handlerThread.looper),
+            testNetwork1.iface.fileDescriptor.fileDescriptor, 1500 /* maxPacketSize */)
+        packetReader.startAsyncForTest()
+        handlerThread.waitForIdle(TIMEOUT_MS)
+
+        val registrationRecord1 = NsdRegistrationRecord()
+        val registrationRecord2 = NsdRegistrationRecord()
+        tryTest {
+            registerService(registrationRecord1, si1)
+
+            var announcement =
+                packetReader.pollForReply("$serviceName.$serviceType.local", TYPE_KEY)
+            assertNotNull(announcement)
+            var keyRecords = announcement.records[ANSECTION].filter { it.nsType == TYPE_KEY }
+            assertEquals(2, keyRecords.size)
+            assertTrue(keyRecords.any { it.dName == "$serviceName.$serviceType.local" })
+            assertTrue(keyRecords.any { it.dName == "$customHostname.local" })
+            assertTrue(keyRecords.all { it.ttl == NAME_RECORDS_TTL_MILLIS })
+            assertTrue(keyRecords.all { it.rr.contentEquals(publicKey) })
+
+            // This test case focuses on key announcement so we don't check the details of the
+            // announcement of the custom host addresses.
+            val addressRecords = announcement.records[ANSECTION].filter {
+                it.nsType == DnsResolver.TYPE_AAAA ||
+                        it.nsType == DnsResolver.TYPE_A
+            }
+            assertEquals(3, addressRecords.size)
+
+            registerService(registrationRecord2, si2)
+
+            announcement = packetReader.pollForReply("$serviceName2.$serviceType2.local", TYPE_KEY)
+            assertNotNull(announcement)
+            keyRecords = announcement.records[ANSECTION].filter { it.nsType == TYPE_KEY }
+            assertEquals(2, keyRecords.size)
+            assertTrue(keyRecords.any { it.dName == "$serviceName2.$serviceType2.local" })
+            assertTrue(keyRecords.any { it.dName == "$customHostname.local" })
+            assertTrue(keyRecords.all { it.ttl == NAME_RECORDS_TTL_MILLIS })
+            assertTrue(keyRecords.all { it.rr.contentEquals(publicKey) })
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord1)
+            nsdManager.unregisterService(registrationRecord2)
+        }
+    }
+
+    @Test
+    fun testServiceTypeClientRemovedAfterSocketDestroyed() {
+        val si = makeTestServiceInfo(testNetwork1.network)
+        // Register service on testNetwork1
+        val registrationRecord = NsdRegistrationRecord()
+        registerService(registrationRecord, si)
+        // Register multiple discovery requests.
+        val discoveryRecord1 = NsdDiscoveryRecord()
+        val discoveryRecord2 = NsdDiscoveryRecord()
+        val discoveryRecord3 = NsdDiscoveryRecord()
+        nsdManager.discoverServices("_test1._tcp", NsdManager.PROTOCOL_DNS_SD,
+                testNetwork1.network, { it.run() }, discoveryRecord1)
+        nsdManager.discoverServices("_test2._tcp", NsdManager.PROTOCOL_DNS_SD,
+                testNetwork1.network, { it.run() }, discoveryRecord2)
+        nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, discoveryRecord3)
+
+        tryTest {
+            discoveryRecord1.expectCallback<DiscoveryStarted>()
+            discoveryRecord2.expectCallback<DiscoveryStarted>()
+            discoveryRecord3.expectCallback<DiscoveryStarted>()
+            val foundInfo = discoveryRecord3.waitForServiceDiscovered(
+                    serviceName, serviceType, testNetwork1.network)
+            assertEquals(testNetwork1.network, foundInfo.network)
+            // Verify that associated ServiceTypeClients has been created for testNetwork1.
+            assertTrue("No serviceTypeClients for testNetwork1.",
+                    hasServiceTypeClientsForNetwork(
+                            getServiceTypeClients(), testNetwork1.network))
+
+            // Disconnect testNetwork1
+            runAsShell(MANAGE_TEST_NETWORKS) {
+                testNetwork1.close(cm)
+            }
+
+            // Verify that no ServiceTypeClients for testNetwork1.
+            discoveryRecord3.expectCallback<ServiceLost>()
+            assertFalse("Still has serviceTypeClients for testNetwork1.",
+                    hasServiceTypeClientsForNetwork(
+                            getServiceTypeClients(), testNetwork1.network))
+        } cleanupStep {
+            nsdManager.stopServiceDiscovery(discoveryRecord1)
+            nsdManager.stopServiceDiscovery(discoveryRecord2)
+            nsdManager.stopServiceDiscovery(discoveryRecord3)
+            discoveryRecord1.expectCallback<DiscoveryStopped>()
+            discoveryRecord2.expectCallback<DiscoveryStopped>()
+            discoveryRecord3.expectCallback<DiscoveryStopped>()
+        } cleanup {
+            nsdManager.unregisterService(registrationRecord)
+            registrationRecord.expectCallback<ServiceUnregistered>()
+        }
+    }
+
+    private fun hasServiceTypeClientsForNetwork(clients: List<String>, network: Network): Boolean {
+        return clients.any { client -> client.substring(
+                client.indexOf("network=") + "network=".length,
+                client.indexOf("interfaceIndex=") - 1) == network.getNetId().toString()
+        }
+    }
+
+    /**
+     * Get ServiceTypeClient logs from the system dump servicediscovery section.
+     *
+     * The sample output:
+     *     ServiceTypeClient: Type{_nmt079019787._tcp.local} \
+     *         SocketKey{ network=116 interfaceIndex=68 } with 1 listeners.
+     *     ServiceTypeClient: Type{_nmt079019787._tcp.local} \
+     *         SocketKey{ network=115 interfaceIndex=67 } with 1 listeners.
+     */
+    private fun getServiceTypeClients(): List<String> {
+        return SystemUtil.runShellCommand(
+                InstrumentationRegistry.getInstrumentation(), "dumpsys servicediscovery")
+                .split("\n").mapNotNull { line ->
+                    line.indexOf("ServiceTypeClient:").let { idx ->
+                        if (idx == -1) null
+                        else line.substring(idx)
+                    }
+                }
+    }
+
     private fun buildConflictingAnnouncement(): ByteBuffer {
         /*
         Generated with:
@@ -2270,4 +2662,4 @@
     // No duplicate addresses in the actual address list
     assertEquals(actual.toSet().size, actual.size)
     assertEquals(expected.toSet(), actual.toSet())
-}
\ No newline at end of file
+}
diff --git a/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java b/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
index 3d828a4..0dd2a23 100644
--- a/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
+++ b/tests/cts/net/util/java/android/net/cts/util/CtsNetUtils.java
@@ -93,7 +93,7 @@
     private static final int SOCKET_TIMEOUT_MS = 10_000;
     private static final int PRIVATE_DNS_PROBE_MS = 1_000;
 
-    private static final int PRIVATE_DNS_SETTING_TIMEOUT_MS = 10_000;
+    private static final int PRIVATE_DNS_SETTING_TIMEOUT_MS = 30_000;
     private static final int CONNECTIVITY_CHANGE_TIMEOUT_SECS = 30;
 
     private static final String PRIVATE_DNS_MODE_OPPORTUNISTIC = "opportunistic";
@@ -408,40 +408,10 @@
         return network;
     }
 
-    public Network connectToCell() throws InterruptedException {
-        if (cellConnectAttempted()) {
-            mCm.unregisterNetworkCallback(mCellNetworkCallback);
-        }
-        NetworkRequest cellRequest = new NetworkRequest.Builder()
-                .addTransportType(TRANSPORT_CELLULAR)
-                .addCapability(NET_CAPABILITY_INTERNET)
-                .build();
-        mCellNetworkCallback = new TestNetworkCallback();
-        mCm.requestNetwork(cellRequest, mCellNetworkCallback);
-        final Network cellNetwork = mCellNetworkCallback.waitForAvailable();
-        assertNotNull("Cell network not available. " +
-                "Please ensure the device has working mobile data.", cellNetwork);
-        return cellNetwork;
-    }
-
-    public void disconnectFromCell() {
-        if (!cellConnectAttempted()) {
-            throw new IllegalStateException("Cell connection not attempted");
-        }
-        mCm.unregisterNetworkCallback(mCellNetworkCallback);
-        mCellNetworkCallback = null;
-    }
-
     public boolean cellConnectAttempted() {
         return mCellNetworkCallback != null;
     }
 
-    public void tearDown() {
-        if (cellConnectAttempted()) {
-            disconnectFromCell();
-        }
-    }
-
     private NetworkRequest makeWifiNetworkRequest() {
         return new NetworkRequest.Builder()
                 .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
diff --git a/tests/cts/netpermission/internetpermission/Android.bp b/tests/cts/netpermission/internetpermission/Android.bp
index 7d5ca2f..e0424ac 100644
--- a/tests/cts/netpermission/internetpermission/Android.bp
+++ b/tests/cts/netpermission/internetpermission/Android.bp
@@ -31,4 +31,5 @@
         "general-tests",
     ],
     host_required: ["net-tests-utils-host-common"],
+    sdk_version: "test_current",
 }
diff --git a/tests/cts/netpermission/updatestatspermission/Android.bp b/tests/cts/netpermission/updatestatspermission/Android.bp
index 2fde1ce..689ce74 100644
--- a/tests/cts/netpermission/updatestatspermission/Android.bp
+++ b/tests/cts/netpermission/updatestatspermission/Android.bp
@@ -19,11 +19,17 @@
 
 android_test {
     name: "CtsNetTestCasesUpdateStatsPermission",
-    defaults: ["cts_defaults"],
+    defaults: [
+        "cts_defaults",
+        "framework-connectivity-test-defaults",
+    ],
 
     srcs: ["src/**/*.java"],
-
-    static_libs: ["ctstestrunner-axt"],
+    platform_apis: true,
+    static_libs: [
+        "ctstestrunner-axt",
+        "net-tests-utils",
+    ],
 
     // Tag this module as a cts test artifact
     test_suites: [
diff --git a/tests/cts/netpermission/updatestatspermission/src/android/net/cts/network/permission/UpdateStatsPermissionTest.java b/tests/cts/netpermission/updatestatspermission/src/android/net/cts/network/permission/UpdateStatsPermissionTest.java
index bea843c..56bad31 100644
--- a/tests/cts/netpermission/updatestatspermission/src/android/net/cts/network/permission/UpdateStatsPermissionTest.java
+++ b/tests/cts/netpermission/updatestatspermission/src/android/net/cts/network/permission/UpdateStatsPermissionTest.java
@@ -16,6 +16,10 @@
 
 package android.net.cts.networkpermission.updatestatspermission;
 
+import static android.Manifest.permission.NETWORK_SETTINGS;
+
+import static com.android.testutils.TestPermissionUtil.runAsShell;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
@@ -25,6 +29,8 @@
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
+import com.android.modules.utils.build.SdkLevel;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -67,6 +73,11 @@
         out.write(buf);
         out.close();
         socket.close();
+        // Clear TrafficStats cache is needed to avoid rate-limit caching for
+        // TrafficStats API results on V+ devices.
+        if (SdkLevel.isAtLeastV()) {
+            runAsShell(NETWORK_SETTINGS, () -> TrafficStats.clearRateLimitCaches());
+        }
         long uidTxBytesAfter = TrafficStats.getUidTxBytes(Process.myUid());
         long uidTxDeltaBytes = uidTxBytesAfter - uidTxBytesBefore;
         assertTrue("uidtxb: " + uidTxBytesBefore + " -> " + uidTxBytesAfter + " delta="
diff --git a/tests/cts/tethering/Android.bp b/tests/cts/tethering/Android.bp
index 3928961..1023173 100644
--- a/tests/cts/tethering/Android.bp
+++ b/tests/cts/tethering/Android.bp
@@ -47,6 +47,7 @@
 
     // Change to system current when TetheringManager move to bootclass path.
     platform_apis: true,
+    min_sdk_version: "30",
     host_required: ["net-tests-utils-host-common"],
 }
 
@@ -80,8 +81,8 @@
 
 // Tethering CTS tests for development and release. These tests always target the platform SDK
 // version, and are subject to all the restrictions appropriate to that version. Before SDK
-// finalization, these tests have a min_sdk_version of 10000, and cannot be installed on release
-// devices.
+// finalization, these tests have a min_sdk_version of 10000, but they can still be installed on
+// release devices as their min_sdk_version is set to a production version.
 android_test {
     name: "CtsTetheringTest",
     defaults: ["CtsTetheringTestDefaults"],
@@ -93,6 +94,14 @@
     // Tag this module as a cts test artifact
     test_suites: [
         "cts",
+        "mts-dnsresolver",
+        "mts-networking",
+        "mts-tethering",
+        "mts-wifi",
+        "mcts-dnsresolver",
+        "mcts-networking",
+        "mcts-tethering",
+        "mcts-wifi",
         "general-tests",
     ],
 
diff --git a/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt b/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
index 361d68c..06bdca6 100644
--- a/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
+++ b/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
@@ -27,6 +27,7 @@
 import android.net.ConnectivityManager
 import android.net.IDnsResolver
 import android.net.INetd
+import android.net.INetd.PERMISSION_INTERNET
 import android.net.LinkProperties
 import android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL
 import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
@@ -66,6 +67,8 @@
 import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
 import com.android.testutils.TestableNetworkCallback
 import com.android.testutils.tryTest
+import java.util.function.BiConsumer
+import java.util.function.Consumer
 import kotlin.test.assertEquals
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
@@ -87,8 +90,6 @@
 import org.mockito.Mockito.mock
 import org.mockito.MockitoAnnotations
 import org.mockito.Spy
-import java.util.function.Consumer
-import java.util.function.BiConsumer
 
 const val SERVICE_BIND_TIMEOUT_MS = 5_000L
 const val TEST_TIMEOUT_MS = 10_000L
@@ -225,6 +226,10 @@
         override fun getSystemProperties() = mock(MockableSystemProperties::class.java)
         override fun makeNetIdManager() = TestNetIdManager()
         override fun getBpfNetMaps(context: Context?, netd: INetd?) = mock(BpfNetMaps::class.java)
+                .also {
+                    doReturn(PERMISSION_INTERNET).`when`(it).getNetPermForUid(anyInt())
+                }
+        override fun isChangeEnabled(changeId: Long, uid: Int) = true
 
         override fun makeMultinetworkPolicyTracker(
             c: Context,
@@ -242,18 +247,19 @@
             super.makeHandlerThread(tag).also { handlerThreads.add(it) }
 
         override fun makeCarrierPrivilegeAuthenticator(
-            context: Context,
-            tm: TelephonyManager,
-            requestRestrictedWifiEnabled: Boolean,
-            listener: BiConsumer<Int, Int>
+                context: Context,
+                tm: TelephonyManager,
+                requestRestrictedWifiEnabled: Boolean,
+                listener: BiConsumer<Int, Int>,
+                handler: Handler
         ): CarrierPrivilegeAuthenticator {
             return CarrierPrivilegeAuthenticator(context,
-                object : CarrierPrivilegeAuthenticator.Dependencies() {
-                    override fun makeHandlerThread(): HandlerThread =
-                        super.makeHandlerThread().also { handlerThreads.add(it) }
-                },
-                tm, TelephonyManagerShimImpl.newInstance(tm),
-                requestRestrictedWifiEnabled, listener)
+                    object : CarrierPrivilegeAuthenticator.Dependencies() {
+                        override fun makeHandlerThread(): HandlerThread =
+                                super.makeHandlerThread().also { handlerThreads.add(it) }
+                    },
+                    tm, TelephonyManagerShimImpl.newInstance(tm),
+                    requestRestrictedWifiEnabled, listener, handler)
         }
 
         override fun makeSatelliteAccessController(
diff --git a/tests/integration/src/com/android/server/net/integrationtests/NetworkStackInstrumentationService.kt b/tests/integration/src/com/android/server/net/integrationtests/NetworkStackInstrumentationService.kt
index 104d063..3d948ba 100644
--- a/tests/integration/src/com/android/server/net/integrationtests/NetworkStackInstrumentationService.kt
+++ b/tests/integration/src/com/android/server/net/integrationtests/NetworkStackInstrumentationService.kt
@@ -18,10 +18,14 @@
 
 import android.app.Service
 import android.content.Intent
+import androidx.annotation.GuardedBy
+import com.android.testutils.quitExecutorServices
+import com.android.testutils.quitThreads
 import java.net.URL
 import java.util.Collections
 import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.ConcurrentLinkedQueue
+import java.util.concurrent.ExecutorService
 import kotlin.collections.ArrayList
 import kotlin.test.fail
 
@@ -37,7 +41,12 @@
                 .run {
                     withDefault { key -> getOrPut(key) { ConcurrentLinkedQueue() } }
                 }
-        private val httpRequestUrls = Collections.synchronizedList(ArrayList<String>())
+        private val httpRequestUrls = Collections.synchronizedList(mutableListOf<String>())
+
+        @GuardedBy("networkMonitorThreads")
+        private val networkMonitorThreads = mutableListOf<Thread>()
+        @GuardedBy("networkMonitorExecutorServices")
+        private val networkMonitorExecutorServices = mutableListOf<ExecutorService>()
 
         /**
          * Called when an HTTP request is being processed by NetworkMonitor. Returns the response
@@ -52,10 +61,47 @@
         }
 
         /**
+         * Called when NetworkMonitor creates a new Thread.
+         */
+        fun onNetworkMonitorThreadCreated(thread: Thread) {
+            synchronized(networkMonitorThreads) {
+                networkMonitorThreads.add(thread)
+            }
+        }
+
+        /**
+         * Called when NetworkMonitor creates a new ExecutorService.
+         */
+        fun onNetworkMonitorExecutorServiceCreated(executorService: ExecutorService) {
+            synchronized(networkMonitorExecutorServices) {
+                networkMonitorExecutorServices.add(executorService)
+            }
+        }
+
+        /**
          * Clear all state of this connector. This is intended for use between two tests, so all
          * state should be reset as if the connector was just created.
          */
         override fun clearAllState() {
+            quitThreads(
+                maxRetryCount = 3,
+                interrupt = true) {
+                synchronized(networkMonitorThreads) {
+                    networkMonitorThreads.toList().also { networkMonitorThreads.clear() }
+                }
+            }
+            quitExecutorServices(
+                maxRetryCount = 3,
+                // NetworkMonitor is expected to have interrupted its executors when probing
+                // finishes, otherwise it's a thread pool leak that should be caught, so they should
+                // not need to be interrupted (the test only needs to wait for them to finish).
+                interrupt = false) {
+                synchronized(networkMonitorExecutorServices) {
+                    networkMonitorExecutorServices.toList().also {
+                        networkMonitorExecutorServices.clear()
+                    }
+                }
+            }
             httpResponses.clear()
             httpRequestUrls.clear()
         }
diff --git a/tests/integration/src/com/android/server/net/integrationtests/NetworkStatsIntegrationTest.kt b/tests/integration/src/com/android/server/net/integrationtests/NetworkStatsIntegrationTest.kt
index 765e56e..4780c5d 100644
--- a/tests/integration/src/com/android/server/net/integrationtests/NetworkStatsIntegrationTest.kt
+++ b/tests/integration/src/com/android/server/net/integrationtests/NetworkStatsIntegrationTest.kt
@@ -38,6 +38,7 @@
 import android.os.Build
 import android.os.Process
 import androidx.test.platform.app.InstrumentationRegistry
+import com.android.modules.utils.build.SdkLevel
 import com.android.server.net.integrationtests.NetworkStatsIntegrationTest.Direction.DOWNLOAD
 import com.android.server.net.integrationtests.NetworkStatsIntegrationTest.Direction.UPLOAD
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
@@ -214,6 +215,11 @@
         // In practice, for one way 10k download payload, the download usage is about
         // 11222~12880 bytes, with 14~17 packets. And the upload usage is about 1279~1626 bytes
         // with 14~17 packets, which is majorly contributed by TCP ACK packets.
+        // Clear TrafficStats cache is needed to avoid rate-limit caching for
+        // TrafficStats API results on V+ devices.
+        if (SdkLevel.isAtLeastV()) {
+            TrafficStats.clearRateLimitCaches()
+        }
         val snapshotAfterDownload = StatsSnapshot(context, internalInterfaceName)
         val (expectedDownloadLower, expectedDownloadUpper) = getExpectedStatsBounds(
             TEST_DOWNLOAD_SIZE,
@@ -236,6 +242,9 @@
         )
 
         // Verify upload data usage accounting.
+        if (SdkLevel.isAtLeastV()) {
+            TrafficStats.clearRateLimitCaches()
+        }
         val snapshotAfterUpload = StatsSnapshot(context, internalInterfaceName)
         val (expectedUploadLower, expectedUploadUpper) = getExpectedStatsBounds(
             TEST_UPLOAD_SIZE,
@@ -299,7 +308,8 @@
         val buf = ByteArray(DEFAULT_BUFFER_SIZE)
 
         httpServer.addResponse(
-            TestHttpServer.Request(path, NanoHTTPD.Method.POST), NanoHTTPD.Response.Status.OK,
+            TestHttpServer.Request(path, NanoHTTPD.Method.POST),
+            NanoHTTPD.Response.Status.OK,
             content = getRandomString(downloadSize)
         )
         var httpConnection: HttpURLConnection? = null
@@ -349,15 +359,19 @@
     ) {
         operator fun plus(other: BareStats): BareStats {
             return BareStats(
-                this.rxBytes + other.rxBytes, this.rxPackets + other.rxPackets,
-                this.txBytes + other.txBytes, this.txPackets + other.txPackets
+                this.rxBytes + other.rxBytes,
+                this.rxPackets + other.rxPackets,
+                this.txBytes + other.txBytes,
+                this.txPackets + other.txPackets
             )
         }
 
         operator fun minus(other: BareStats): BareStats {
             return BareStats(
-                this.rxBytes - other.rxBytes, this.rxPackets - other.rxPackets,
-                this.txBytes - other.txBytes, this.txPackets - other.txPackets
+                this.rxBytes - other.rxBytes,
+                this.rxPackets - other.rxPackets,
+                this.txBytes - other.txBytes,
+                this.txPackets - other.txPackets
             )
         }
 
@@ -405,8 +419,12 @@
         private fun getUidDetail(iface: String, tag: Int): BareStats {
             return getNetworkStatsThat(iface, tag) { nsm, template ->
                 nsm.queryDetailsForUidTagState(
-                    template, Long.MIN_VALUE, Long.MAX_VALUE,
-                    Process.myUid(), tag, Bucket.STATE_ALL
+                    template,
+                    Long.MIN_VALUE,
+                    Long.MAX_VALUE,
+                    Process.myUid(),
+                    tag,
+                    Bucket.STATE_ALL
                 )
             }
         }
@@ -498,28 +516,36 @@
         assertInRange(
             "Unexpected iface traffic stats",
             after.iface,
-            before.trafficStatsIface, after.trafficStatsIface,
-            lower, upper
+            before.trafficStatsIface,
+            after.trafficStatsIface,
+            lower,
+            upper
         )
         // Uid traffic stats are counted in both direction because the external network
         // traffic is also attributed to the test uid.
         assertInRange(
             "Unexpected uid traffic stats",
             after.iface,
-            before.trafficStatsUid, after.trafficStatsUid,
-            lower + lower.reverse(), upper + upper.reverse()
+            before.trafficStatsUid,
+            after.trafficStatsUid,
+            lower + lower.reverse(),
+            upper + upper.reverse()
         )
         assertInRange(
             "Unexpected non-tagged summary stats",
             after.iface,
-            before.statsSummary, after.statsSummary,
-            lower, upper
+            before.statsSummary,
+            after.statsSummary,
+            lower,
+            upper
         )
         assertInRange(
             "Unexpected non-tagged uid stats",
             after.iface,
-            before.statsUid, after.statsUid,
-            lower, upper
+            before.statsUid,
+            after.statsUid,
+            lower,
+            upper
         )
     }
 
@@ -546,14 +572,16 @@
         assertInRange(
             "Unexpected tagged summary stats",
             after.iface,
-            before.taggedSummary, after.taggedSummary,
+            before.taggedSummary,
+            after.taggedSummary,
             lower,
             upper
         )
         assertInRange(
             "Unexpected tagged uid stats: ${Process.myUid()}",
             after.iface,
-            before.taggedUid, after.taggedUid,
+            before.taggedUid,
+            after.taggedUid,
             lower,
             upper
         )
@@ -570,7 +598,8 @@
     ) {
         // Passing the value after operation and the value before operation to dump the actual
         // numbers if it fails.
-        assertTrue(checkInRange(before, after, lower, upper),
+        assertTrue(
+            checkInRange(before, after, lower, upper),
             "$tag on $iface: $after - $before is not within range [$lower, $upper]"
         )
     }
diff --git a/tests/integration/src/com/android/server/net/integrationtests/ServiceManagerWrapperIntegrationTest.kt b/tests/integration/src/com/android/server/net/integrationtests/ServiceManagerWrapperIntegrationTest.kt
new file mode 100644
index 0000000..7e00ed2
--- /dev/null
+++ b/tests/integration/src/com/android/server/net/integrationtests/ServiceManagerWrapperIntegrationTest.kt
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.server.net.integrationtests
+
+import android.content.Context
+import android.os.Build
+import com.android.server.ServiceManagerWrapper
+import com.android.testutils.ConnectivityModuleTest
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertNotNull
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/** Integration tests for {@link ServiceManagerWrapper}. */
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.S)
+@ConnectivityModuleTest
+class ServiceManagerWrapperIntegrationTest {
+    @Test
+    fun testWaitForService_successFullyRetrievesConnectivityServiceBinder() {
+        assertNotNull(ServiceManagerWrapper.waitForService(Context.CONNECTIVITY_SERVICE))
+    }
+}
diff --git a/tests/integration/src/com/android/server/net/integrationtests/TestNetworkStackService.kt b/tests/integration/src/com/android/server/net/integrationtests/TestNetworkStackService.kt
index 7e227c4..e43ce29 100644
--- a/tests/integration/src/com/android/server/net/integrationtests/TestNetworkStackService.kt
+++ b/tests/integration/src/com/android/server/net/integrationtests/TestNetworkStackService.kt
@@ -30,13 +30,14 @@
 import com.android.server.NetworkStackService.NetworkStackConnector
 import com.android.server.connectivity.NetworkMonitor
 import com.android.server.net.integrationtests.NetworkStackInstrumentationService.InstrumentationConnector
-import org.mockito.Mockito.doReturn
-import org.mockito.Mockito.mock
-import org.mockito.Mockito.spy
 import java.io.ByteArrayInputStream
 import java.net.HttpURLConnection
 import java.net.URL
 import java.nio.charset.StandardCharsets
+import java.util.concurrent.ExecutorService
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.spy
 
 private const val TEST_NETID = 42
 
@@ -60,6 +61,10 @@
     private class NetworkMonitorDeps(private val privateDnsBypassNetwork: Network) :
             NetworkMonitor.Dependencies() {
         override fun getPrivateDnsBypassNetwork(network: Network?) = privateDnsBypassNetwork
+        override fun onThreadCreated(thread: Thread) =
+            InstrumentationConnector.onNetworkMonitorThreadCreated(thread)
+        override fun onExecutorServiceCreated(ecs: ExecutorService) =
+            InstrumentationConnector.onNetworkMonitorExecutorServiceCreated(ecs)
     }
 
     /**
diff --git a/tests/mts/Android.bp b/tests/mts/Android.bp
index 336be2e..c118d0a 100644
--- a/tests/mts/Android.bp
+++ b/tests/mts/Android.bp
@@ -31,6 +31,8 @@
     header_libs: [
         "bpf_headers",
     ],
+    version_script: ":connectivity_mainline_test_map",
+    stl: "libc++_static",
     static_libs: [
         "libbase",
         "libmodules-utils-build",
diff --git a/tests/mts/bpf_existence_test.cpp b/tests/mts/bpf_existence_test.cpp
index 51a4eca..29f5cd2 100644
--- a/tests/mts/bpf_existence_test.cpp
+++ b/tests/mts/bpf_existence_test.cpp
@@ -68,6 +68,8 @@
     TETHERING "map_offload_tether_upstream6_map",
     TETHERING "map_test_bitmap",
     TETHERING "map_test_tether_downstream6_map",
+    TETHERING "map_test_tether2_downstream6_map",
+    TETHERING "map_test_tether3_downstream6_map",
     TETHERING "prog_offload_schedcls_tether_downstream4_ether",
     TETHERING "prog_offload_schedcls_tether_downstream4_rawip",
     TETHERING "prog_offload_schedcls_tether_downstream6_ether",
@@ -141,6 +143,27 @@
     NETD "map_netd_packet_trace_ringbuf",
 };
 
+// Provided by *current* mainline module for V+ devices
+static const set<string> MAINLINE_FOR_V_PLUS = {
+    NETD "prog_netd_connect4_inet4_connect",
+    NETD "prog_netd_connect6_inet6_connect",
+    NETD "prog_netd_recvmsg4_udp4_recvmsg",
+    NETD "prog_netd_recvmsg6_udp6_recvmsg",
+    NETD "prog_netd_sendmsg4_udp4_sendmsg",
+    NETD "prog_netd_sendmsg6_udp6_sendmsg",
+};
+
+// Provided by *current* mainline module for V+ devices with 5.4+ kernels
+static const set<string> MAINLINE_FOR_V_5_4_PLUS = {
+    NETD "prog_netd_getsockopt_prog",
+    NETD "prog_netd_setsockopt_prog",
+};
+
+// Provided by *current* mainline module for U+ devices with 5.10+ kernels
+static const set<string> MAINLINE_FOR_V_5_10_PLUS = {
+    NETD "prog_netd_cgroupsockrelease_inet_release",
+};
+
 static void addAll(set<string>& a, const set<string>& b) {
     a.insert(b.begin(), b.end());
 }
@@ -188,6 +211,9 @@
 
     // V requires Linux Kernel 4.19+, but nothing (as yet) added or removed in V.
     if (IsAtLeastV()) ASSERT_TRUE(isAtLeastKernelVersion(4, 19, 0));
+    DO_EXPECT(IsAtLeastV(), MAINLINE_FOR_V_PLUS);
+    DO_EXPECT(IsAtLeastV() && isAtLeastKernelVersion(5, 4, 0), MAINLINE_FOR_V_5_4_PLUS);
+    DO_EXPECT(IsAtLeastV() && isAtLeastKernelVersion(5, 10, 0), MAINLINE_FOR_V_5_10_PLUS);
 
     for (const auto& file : mustExist) {
         EXPECT_EQ(0, access(file.c_str(), R_OK)) << file << " does not exist";
diff --git a/tests/native/connectivity_native_test/Android.bp b/tests/native/connectivity_native_test/Android.bp
index 2f66d17..c5088c6 100644
--- a/tests/native/connectivity_native_test/Android.bp
+++ b/tests/native/connectivity_native_test/Android.bp
@@ -17,8 +17,9 @@
         "connectivity_native_test.cpp",
     ],
     header_libs: ["bpf_connectivity_headers"],
+    version_script: ":connectivity_mainline_test_map",
+    stl: "libc++_static",
     shared_libs: [
-        "libbase",
         "libbinder_ndk",
         "liblog",
         "libnetutils",
@@ -26,6 +27,7 @@
     ],
     static_libs: [
         "connectivity_native_aidl_interface-lateststable-ndk",
+        "libbase",
         "libcutils",
         "libmodules-utils-build",
         "libutils",
diff --git a/tests/native/utilities/firewall.h b/tests/native/utilities/firewall.h
index b3d69bf..a5cb0b9 100644
--- a/tests/native/utilities/firewall.h
+++ b/tests/native/utilities/firewall.h
@@ -18,6 +18,7 @@
 #pragma once
 
 #include <android-base/thread_annotations.h>
+#define BPF_MAP_LOCKLESS_FOR_TEST
 #include <bpf/BpfMap.h>
 #include "netd.h"
 
diff --git a/tests/unit/Android.bp b/tests/unit/Android.bp
index 20d457f..2f88c41 100644
--- a/tests/unit/Android.bp
+++ b/tests/unit/Android.bp
@@ -58,14 +58,11 @@
 filegroup {
     name: "non-connectivity-module-test",
     srcs: [
-        "java/android/net/Ikev2VpnProfileTest.java",
         "java/android/net/IpMemoryStoreTest.java",
         "java/android/net/TelephonyNetworkSpecifierTest.java",
-        "java/android/net/VpnManagerTest.java",
         "java/android/net/ipmemorystore/*.java",
         "java/android/net/netstats/NetworkStatsDataMigrationUtilsTest.kt",
         "java/com/android/internal/net/NetworkUtilsInternalTest.java",
-        "java/com/android/internal/net/VpnProfileTest.java",
         "java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java",
         "java/com/android/server/connectivity/IpConnectivityMetricsTest.java",
         "java/com/android/server/connectivity/MetricsTestUtil.java",
@@ -75,17 +72,6 @@
     ],
 }
 
-// Subset of services-core used to by ConnectivityService tests to test VPN realistically.
-// This is stripped by jarjar (see rules below) from other unrelated classes, so tests do not
-// include most classes from services-core, which are unrelated and cause wrong code coverage
-// calculations.
-java_library {
-    name: "services.core-vpn",
-    static_libs: ["services.core"],
-    jarjar_rules: "vpn-jarjar-rules.txt",
-    visibility: ["//visibility:private"],
-}
-
 java_defaults {
     name: "FrameworksNetTestsDefaults",
     min_sdk_version: "30",
@@ -112,7 +98,6 @@
         "platform-test-annotations",
         "service-connectivity-pre-jarjar",
         "service-connectivity-tiramisu-pre-jarjar",
-        "services.core-vpn",
         "testables",
         "cts-net-utils",
     ],
diff --git a/tests/unit/java/android/net/ConnectivityManagerTest.java b/tests/unit/java/android/net/ConnectivityManagerTest.java
index b71a46f..9a77c89 100644
--- a/tests/unit/java/android/net/ConnectivityManagerTest.java
+++ b/tests/unit/java/android/net/ConnectivityManagerTest.java
@@ -52,6 +52,7 @@
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.reset;
@@ -72,6 +73,7 @@
 import android.os.Messenger;
 import android.os.Process;
 
+import androidx.annotation.NonNull;
 import androidx.test.filters.SmallTest;
 
 import com.android.internal.util.test.BroadcastInterceptingContext;
@@ -83,6 +85,7 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
+import org.mockito.InOrder;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -240,7 +243,7 @@
 
         // register callback
         when(mService.requestNetwork(anyInt(), any(), anyInt(), captor.capture(), anyInt(), any(),
-                anyInt(), anyInt(), any(), nullable(String.class))).thenReturn(request);
+                anyInt(), anyInt(), any(), nullable(String.class), anyInt())).thenReturn(request);
         manager.requestNetwork(request, callback, handler);
 
         // callback triggers
@@ -269,7 +272,7 @@
 
         // register callback
         when(mService.requestNetwork(anyInt(), any(), anyInt(), captor.capture(), anyInt(), any(),
-                anyInt(), anyInt(), any(), nullable(String.class))).thenReturn(req1);
+                anyInt(), anyInt(), any(), nullable(String.class), anyInt())).thenReturn(req1);
         manager.requestNetwork(req1, callback, handler);
 
         // callback triggers
@@ -287,7 +290,7 @@
 
         // callback can be registered again
         when(mService.requestNetwork(anyInt(), any(), anyInt(), captor.capture(), anyInt(), any(),
-                anyInt(), anyInt(), any(), nullable(String.class))).thenReturn(req2);
+                anyInt(), anyInt(), any(), nullable(String.class), anyInt())).thenReturn(req2);
         manager.requestNetwork(req2, callback, handler);
 
         // callback triggers
@@ -311,7 +314,7 @@
 
         when(mCtx.getApplicationInfo()).thenReturn(info);
         when(mService.requestNetwork(anyInt(), any(), anyInt(), any(), anyInt(), any(), anyInt(),
-                anyInt(), any(), nullable(String.class))).thenReturn(request);
+                anyInt(), any(), nullable(String.class), anyInt())).thenReturn(request);
 
         Handler handler = new Handler(Looper.getMainLooper());
         manager.requestNetwork(request, callback, handler);
@@ -403,15 +406,15 @@
         manager.requestNetwork(request, callback);
         verify(mService).requestNetwork(eq(Process.INVALID_UID), eq(request.networkCapabilities),
                 eq(REQUEST.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
         reset(mService);
 
         // Verify that register network callback does not calls requestNetwork at all.
         manager.registerNetworkCallback(request, callback);
         verify(mService, never()).requestNetwork(anyInt(), any(), anyInt(), any(), anyInt(), any(),
-                anyInt(), anyInt(), any(), any());
+                anyInt(), anyInt(), any(), any(), anyInt());
         verify(mService).listenForNetwork(eq(request.networkCapabilities), any(), any(), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
         reset(mService);
 
         Handler handler = new Handler(ConnectivityThread.getInstanceLooper());
@@ -419,24 +422,24 @@
         manager.registerDefaultNetworkCallback(callback);
         verify(mService).requestNetwork(eq(Process.INVALID_UID), eq(null),
                 eq(TRACK_DEFAULT.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
         reset(mService);
 
         manager.registerDefaultNetworkCallbackForUid(42, callback, handler);
         verify(mService).requestNetwork(eq(42), eq(null),
                 eq(TRACK_DEFAULT.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
 
         manager.requestBackgroundNetwork(request, callback, handler);
         verify(mService).requestNetwork(eq(Process.INVALID_UID), eq(request.networkCapabilities),
                 eq(BACKGROUND_REQUEST.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
         reset(mService);
 
         manager.registerSystemDefaultNetworkCallback(callback, handler);
         verify(mService).requestNetwork(eq(Process.INVALID_UID), eq(null),
                 eq(TRACK_SYSTEM_DEFAULT.ordinal()), any(), anyInt(), any(), eq(TYPE_NONE), anyInt(),
-                eq(testPkgName), eq(testAttributionTag));
+                eq(testPkgName), eq(testAttributionTag), anyInt());
         reset(mService);
     }
 
@@ -516,16 +519,154 @@
                     + " attempts", ref.get());
     }
 
-    private <T> void mockService(Class<T> clazz, String name, T service) {
-        doReturn(service).when(mCtx).getSystemService(name);
-        doReturn(name).when(mCtx).getSystemServiceName(clazz);
+    @Test
+    public void testDeclaredMethodsFlag_requestWithMixedMethods_RegistrationFlagsMatch()
+            throws Exception {
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
 
-        // If the test suite uses the inline mock maker library, such as for coverage tests,
-        // then the final version of getSystemService must also be mocked, as the real
-        // method will not be called by the test and null object is returned since no mock.
-        // Otherwise, mocking a final method will fail the test.
-        if (mCtx.getSystemService(clazz) == null) {
-            doReturn(service).when(mCtx).getSystemService(clazz);
-        }
+        final NetworkRequest request = new NetworkRequest.Builder().build();
+        final NetworkCallback callback1 = new ConnectivityManager.NetworkCallback() {
+            @Override
+            public void onPreCheck(@NonNull Network network) {}
+            @Override
+            public void onAvailable(@NonNull Network network) {}
+            @Override
+            public void onLost(@NonNull Network network) {}
+            @Override
+            public void onCapabilitiesChanged(@NonNull Network network,
+                    @NonNull NetworkCapabilities networkCapabilities) {}
+            @Override
+            public void onLocalNetworkInfoChanged(@NonNull Network network,
+                    @NonNull LocalNetworkInfo localNetworkInfo) {}
+            @Override
+            public void onNetworkResumed(@NonNull Network network) {}
+            @Override
+            public void onBlockedStatusChanged(@NonNull Network network, int blocked) {}
+        };
+        manager.requestNetwork(request, callback1);
+
+        final InOrder inOrder = inOrder(mService);
+        inOrder.verify(mService).requestNetwork(
+                anyInt(), any(), anyInt(), any(), anyInt(), any(), anyInt(), anyInt(), any(), any(),
+                eq(1 << ConnectivityManager.CALLBACK_PRECHECK
+                        | 1 << ConnectivityManager.CALLBACK_AVAILABLE
+                        | 1 << ConnectivityManager.CALLBACK_LOST
+                        | 1 << ConnectivityManager.CALLBACK_CAP_CHANGED
+                        | 1 << ConnectivityManager.CALLBACK_LOCAL_NETWORK_INFO_CHANGED
+                        | 1 << ConnectivityManager.CALLBACK_RESUMED
+                        | 1 << ConnectivityManager.CALLBACK_BLK_CHANGED));
+    }
+
+    @Test
+    public void testDeclaredMethodsFlag_listenWithMixedMethods_RegistrationFlagsMatch()
+            throws Exception {
+        final NetworkRequest request = new NetworkRequest.Builder().build();
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
+
+        final NetworkCallback callback2 = new ConnectivityManager.NetworkCallback() {
+            @Override
+            public void onLosing(@NonNull Network network, int maxMsToLive) {}
+            @Override
+            public void onUnavailable() {}
+            @Override
+            public void onLinkPropertiesChanged(@NonNull Network network,
+                    @NonNull LinkProperties linkProperties) {}
+            @Override
+            public void onNetworkSuspended(@NonNull Network network) {}
+        };
+        manager.registerNetworkCallback(request, callback2);
+        // Call a second time with the same callback to exercise caching
+        manager.registerNetworkCallback(request, callback2);
+
+        verify(mService, times(2)).listenForNetwork(
+                any(), any(), any(), anyInt(), any(), any(),
+                eq(1 << ConnectivityManager.CALLBACK_LOSING
+                        // AVAILABLE calls IP_CHANGED and SUSPENDED so it gets added
+                        | 1 << ConnectivityManager.CALLBACK_AVAILABLE
+                        | 1 << ConnectivityManager.CALLBACK_UNAVAIL
+                        | 1 << ConnectivityManager.CALLBACK_IP_CHANGED
+                        | 1 << ConnectivityManager.CALLBACK_SUSPENDED));
+    }
+
+    @Test
+    public void testDeclaredMethodsFlag_requestWithHiddenAvailableCallback_RegistrationFlagsMatch()
+            throws Exception {
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
+
+        final NetworkCallback hiddenOnAvailableCb = new ConnectivityManager.NetworkCallback() {
+            // This overload is @hide but might still be used by (bad) apps
+            @Override
+            public void onAvailable(@NonNull Network network,
+                    @NonNull NetworkCapabilities networkCapabilities,
+                    @NonNull LinkProperties linkProperties, boolean blocked) {}
+        };
+        manager.registerDefaultNetworkCallback(hiddenOnAvailableCb);
+
+        verify(mService).requestNetwork(
+                anyInt(), any(), anyInt(), any(), anyInt(), any(), anyInt(), anyInt(), any(), any(),
+                eq(1 << ConnectivityManager.CALLBACK_AVAILABLE));
+    }
+
+    public static class NetworkCallbackWithOnLostOnly extends NetworkCallback {
+        @Override
+        public void onLost(@NonNull Network network) {}
+    }
+
+    @Test
+    public void testDeclaredMethodsFlag_requestWithoutAvailableCallback_RegistrationFlagsMatch()
+            throws Exception {
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
+        final Handler handler = new Handler(Looper.getMainLooper());
+
+        final NetworkCallback noOnAvailableCb = new NetworkCallbackWithOnLostOnly();
+        manager.registerSystemDefaultNetworkCallback(noOnAvailableCb, handler);
+
+        verify(mService).requestNetwork(
+                anyInt(), any(), anyInt(), any(), anyInt(), any(), anyInt(), anyInt(), any(), any(),
+                eq(1 << ConnectivityManager.CALLBACK_LOST));
+    }
+
+    @Test
+    public void testDeclaredMethodsFlag_listenWithMock_OptimizationDisabled()
+            throws Exception {
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
+        final Handler handler = new Handler(Looper.getMainLooper());
+
+        final NetworkRequest request = new NetworkRequest.Builder().build();
+        manager.registerNetworkCallback(request, mock(NetworkCallbackWithOnLostOnly.class),
+                handler);
+
+        verify(mService).listenForNetwork(
+                any(), any(), any(), anyInt(), any(), any(),
+                // Mock that does not call the constructor -> do not use the optimization
+                eq(~0));
+    }
+
+    @Test
+    public void testDeclaredMethodsFlag_requestWitNoCallback_OptimizationDisabled()
+            throws Exception {
+        doReturn(ConnectivityManager.FEATURE_USE_DECLARED_METHODS_FOR_CALLBACKS)
+                .when(mService).getEnabledConnectivityManagerFeatures();
+        final ConnectivityManager manager = new ConnectivityManager(mCtx, mService);
+        final Handler handler = new Handler(Looper.getMainLooper());
+
+        final NetworkRequest request = new NetworkRequest.Builder().build();
+        final NetworkCallback noCallbackAtAll = new ConnectivityManager.NetworkCallback() {};
+        manager.requestBackgroundNetwork(request, noCallbackAtAll, handler);
+
+        verify(mService).requestNetwork(
+                anyInt(), any(), anyInt(), any(), anyInt(), any(), anyInt(), anyInt(), any(), any(),
+                // No callbacks overridden -> do not use the optimization
+                eq(~0));
     }
 }
diff --git a/tests/unit/java/android/net/Ikev2VpnProfileTest.java b/tests/unit/java/android/net/Ikev2VpnProfileTest.java
deleted file mode 100644
index e12e961..0000000
--- a/tests/unit/java/android/net/Ikev2VpnProfileTest.java
+++ /dev/null
@@ -1,585 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net;
-
-import static android.net.cts.util.IkeSessionTestUtils.CHILD_PARAMS;
-import static android.net.cts.util.IkeSessionTestUtils.IKE_PARAMS_V6;
-import static android.net.cts.util.IkeSessionTestUtils.getTestIkeSessionParams;
-
-import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
-
-import static org.junit.Assert.assertArrayEquals;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
-
-import android.net.ipsec.ike.IkeKeyIdIdentification;
-import android.net.ipsec.ike.IkeTunnelConnectionParams;
-import android.os.Build;
-import android.test.mock.MockContext;
-
-import androidx.test.filters.SmallTest;
-
-import com.android.internal.net.VpnProfile;
-import com.android.internal.org.bouncycastle.x509.X509V1CertificateGenerator;
-import com.android.net.module.util.ProxyUtils;
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRunner;
-
-import org.junit.Before;
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.math.BigInteger;
-import java.security.KeyPair;
-import java.security.KeyPairGenerator;
-import java.security.PrivateKey;
-import java.security.cert.X509Certificate;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Date;
-import java.util.List;
-import java.util.concurrent.TimeUnit;
-
-import javax.security.auth.x500.X500Principal;
-
-/** Unit tests for {@link Ikev2VpnProfile.Builder}. */
-@SmallTest
-@RunWith(DevSdkIgnoreRunner.class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class Ikev2VpnProfileTest {
-    private static final String SERVER_ADDR_STRING = "1.2.3.4";
-    private static final String IDENTITY_STRING = "Identity";
-    private static final String USERNAME_STRING = "username";
-    private static final String PASSWORD_STRING = "pa55w0rd";
-    private static final String EXCL_LIST = "exclList";
-    private static final byte[] PSK_BYTES = "preSharedKey".getBytes();
-    private static final int TEST_MTU = 1300;
-
-    @Rule
-    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
-
-    private final MockContext mMockContext =
-            new MockContext() {
-                @Override
-                public String getOpPackageName() {
-                    return "fooPackage";
-                }
-            };
-    private final ProxyInfo mProxy = ProxyInfo.buildDirectProxy(
-            SERVER_ADDR_STRING, -1, ProxyUtils.exclusionStringAsList(EXCL_LIST));
-
-    private X509Certificate mUserCert;
-    private X509Certificate mServerRootCa;
-    private PrivateKey mPrivateKey;
-
-    @Before
-    public void setUp() throws Exception {
-        mServerRootCa = generateRandomCertAndKeyPair().cert;
-
-        final CertificateAndKey userCertKey = generateRandomCertAndKeyPair();
-        mUserCert = userCertKey.cert;
-        mPrivateKey = userCertKey.key;
-    }
-
-    private Ikev2VpnProfile.Builder getBuilderWithDefaultOptions() {
-        final Ikev2VpnProfile.Builder builder =
-                new Ikev2VpnProfile.Builder(SERVER_ADDR_STRING, IDENTITY_STRING);
-
-        builder.setBypassable(true);
-        builder.setProxy(mProxy);
-        builder.setMaxMtu(TEST_MTU);
-        builder.setMetered(true);
-
-        return builder;
-    }
-
-    @Test
-    public void testBuildValidProfileWithOptions() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa);
-        final Ikev2VpnProfile profile = builder.build();
-        assertNotNull(profile);
-
-        // Check non-auth parameters correctly stored
-        assertEquals(SERVER_ADDR_STRING, profile.getServerAddr());
-        assertEquals(IDENTITY_STRING, profile.getUserIdentity());
-        assertEquals(mProxy, profile.getProxyInfo());
-        assertTrue(profile.isBypassable());
-        assertTrue(profile.isMetered());
-        assertEquals(TEST_MTU, profile.getMaxMtu());
-        assertEquals(Ikev2VpnProfile.DEFAULT_ALGORITHMS, profile.getAllowedAlgorithms());
-    }
-
-    @Test
-    public void testBuildUsernamePasswordProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa);
-        final Ikev2VpnProfile profile = builder.build();
-        assertNotNull(profile);
-
-        assertEquals(USERNAME_STRING, profile.getUsername());
-        assertEquals(PASSWORD_STRING, profile.getPassword());
-        assertEquals(mServerRootCa, profile.getServerRootCaCert());
-
-        assertNull(profile.getPresharedKey());
-        assertNull(profile.getRsaPrivateKey());
-        assertNull(profile.getUserCert());
-    }
-
-    @Test
-    public void testBuildDigitalSignatureProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final Ikev2VpnProfile profile = builder.build();
-        assertNotNull(profile);
-
-        assertEquals(profile.getUserCert(), mUserCert);
-        assertEquals(mPrivateKey, profile.getRsaPrivateKey());
-        assertEquals(profile.getServerRootCaCert(), mServerRootCa);
-
-        assertNull(profile.getPresharedKey());
-        assertNull(profile.getUsername());
-        assertNull(profile.getPassword());
-    }
-
-    @Test
-    public void testBuildPresharedKeyProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthPsk(PSK_BYTES);
-        final Ikev2VpnProfile profile = builder.build();
-        assertNotNull(profile);
-
-        assertArrayEquals(PSK_BYTES, profile.getPresharedKey());
-
-        assertNull(profile.getServerRootCaCert());
-        assertNull(profile.getUsername());
-        assertNull(profile.getPassword());
-        assertNull(profile.getRsaPrivateKey());
-        assertNull(profile.getUserCert());
-    }
-
-    @Test
-    public void testBuildWithAllowedAlgorithmsAead() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        builder.setAuthPsk(PSK_BYTES);
-
-        List<String> allowedAlgorithms =
-                Arrays.asList(
-                        IpSecAlgorithm.AUTH_CRYPT_AES_GCM,
-                        IpSecAlgorithm.AUTH_CRYPT_CHACHA20_POLY1305);
-        builder.setAllowedAlgorithms(allowedAlgorithms);
-
-        final Ikev2VpnProfile profile = builder.build();
-        assertEquals(allowedAlgorithms, profile.getAllowedAlgorithms());
-    }
-
-    @Test
-    public void testBuildWithAllowedAlgorithmsNormal() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        builder.setAuthPsk(PSK_BYTES);
-
-        List<String> allowedAlgorithms =
-                Arrays.asList(
-                        IpSecAlgorithm.AUTH_HMAC_SHA512,
-                        IpSecAlgorithm.AUTH_AES_XCBC,
-                        IpSecAlgorithm.AUTH_AES_CMAC,
-                        IpSecAlgorithm.CRYPT_AES_CBC,
-                        IpSecAlgorithm.CRYPT_AES_CTR);
-        builder.setAllowedAlgorithms(allowedAlgorithms);
-
-        final Ikev2VpnProfile profile = builder.build();
-        assertEquals(allowedAlgorithms, profile.getAllowedAlgorithms());
-    }
-
-    @Test
-    public void testSetAllowedAlgorithmsEmptyList() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        try {
-            builder.setAllowedAlgorithms(new ArrayList<>());
-            fail("Expected exception due to no valid algorithm set");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    @Test
-    public void testSetAllowedAlgorithmsInvalidList() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        List<String> allowedAlgorithms = new ArrayList<>();
-
-        try {
-            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_SHA256));
-            fail("Expected exception due to missing encryption");
-        } catch (IllegalArgumentException expected) {
-        }
-
-        try {
-            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.CRYPT_AES_CBC));
-            fail("Expected exception due to missing authentication");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    @Test
-    public void testSetAllowedAlgorithmsInsecureAlgorithm() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        List<String> allowedAlgorithms = new ArrayList<>();
-
-        try {
-            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_MD5));
-            fail("Expected exception due to insecure algorithm");
-        } catch (IllegalArgumentException expected) {
-        }
-
-        try {
-            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_SHA1));
-            fail("Expected exception due to insecure algorithm");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    @Test
-    public void testBuildNoAuthMethodSet() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        try {
-            builder.build();
-            fail("Expected exception due to lack of auth method");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-
-    // TODO: Refer to Build.VERSION_CODES.SC_V2 when it's available in AOSP and mainline branch
-    @DevSdkIgnoreRule.IgnoreUpTo(SC_V2)
-    @Test
-    public void testBuildExcludeLocalRoutesSet() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        builder.setAuthPsk(PSK_BYTES);
-        builder.setLocalRoutesExcluded(true);
-
-        final Ikev2VpnProfile profile = builder.build();
-        assertNotNull(profile);
-        assertTrue(profile.areLocalRoutesExcluded());
-
-        builder.setBypassable(false);
-        try {
-            builder.build();
-            fail("Expected exception because excludeLocalRoutes should be set only"
-                    + " on the bypassable VPN");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    @Test
-    public void testBuildInvalidMtu() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        try {
-            builder.setMaxMtu(500);
-            fail("Expected exception due to too-small MTU");
-        } catch (IllegalArgumentException expected) {
-        }
-    }
-
-    private void verifyVpnProfileCommon(VpnProfile profile) {
-        assertEquals(SERVER_ADDR_STRING, profile.server);
-        assertEquals(IDENTITY_STRING, profile.ipsecIdentifier);
-        assertEquals(mProxy, profile.proxy);
-        assertTrue(profile.isBypassable);
-        assertTrue(profile.isMetered);
-        assertEquals(TEST_MTU, profile.maxMtu);
-    }
-
-    @Test
-    public void testPskConvertToVpnProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthPsk(PSK_BYTES);
-        final VpnProfile profile = builder.build().toVpnProfile();
-
-        verifyVpnProfileCommon(profile);
-        assertEquals(Ikev2VpnProfile.encodeForIpsecSecret(PSK_BYTES), profile.ipsecSecret);
-
-        // Check nothing else is set
-        assertEquals("", profile.username);
-        assertEquals("", profile.password);
-        assertEquals("", profile.ipsecUserCert);
-        assertEquals("", profile.ipsecCaCert);
-    }
-
-    @Test
-    public void testUsernamePasswordConvertToVpnProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa);
-        final VpnProfile profile = builder.build().toVpnProfile();
-
-        verifyVpnProfileCommon(profile);
-        assertEquals(USERNAME_STRING, profile.username);
-        assertEquals(PASSWORD_STRING, profile.password);
-        assertEquals(Ikev2VpnProfile.certificateToPemString(mServerRootCa), profile.ipsecCaCert);
-
-        // Check nothing else is set
-        assertEquals("", profile.ipsecUserCert);
-        assertEquals("", profile.ipsecSecret);
-    }
-
-    @Test
-    public void testRsaConvertToVpnProfile() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final VpnProfile profile = builder.build().toVpnProfile();
-
-        final String expectedSecret = Ikev2VpnProfile.PREFIX_INLINE
-                + Ikev2VpnProfile.encodeForIpsecSecret(mPrivateKey.getEncoded());
-        verifyVpnProfileCommon(profile);
-        assertEquals(Ikev2VpnProfile.certificateToPemString(mUserCert), profile.ipsecUserCert);
-        assertEquals(
-                expectedSecret,
-                profile.ipsecSecret);
-        assertEquals(Ikev2VpnProfile.certificateToPemString(mServerRootCa), profile.ipsecCaCert);
-
-        // Check nothing else is set
-        assertEquals("", profile.username);
-        assertEquals("", profile.password);
-    }
-
-    @Test
-    public void testPskFromVpnProfileDiscardsIrrelevantValues() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthPsk(PSK_BYTES);
-        final VpnProfile profile = builder.build().toVpnProfile();
-        profile.username = USERNAME_STRING;
-        profile.password = PASSWORD_STRING;
-        profile.ipsecCaCert = Ikev2VpnProfile.certificateToPemString(mServerRootCa);
-        profile.ipsecUserCert = Ikev2VpnProfile.certificateToPemString(mUserCert);
-
-        final Ikev2VpnProfile result = Ikev2VpnProfile.fromVpnProfile(profile);
-        assertNull(result.getUsername());
-        assertNull(result.getPassword());
-        assertNull(result.getUserCert());
-        assertNull(result.getRsaPrivateKey());
-        assertNull(result.getServerRootCaCert());
-    }
-
-    @Test
-    public void testUsernamePasswordFromVpnProfileDiscardsIrrelevantValues() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa);
-        final VpnProfile profile = builder.build().toVpnProfile();
-        profile.ipsecSecret = new String(PSK_BYTES);
-        profile.ipsecUserCert = Ikev2VpnProfile.certificateToPemString(mUserCert);
-
-        final Ikev2VpnProfile result = Ikev2VpnProfile.fromVpnProfile(profile);
-        assertNull(result.getPresharedKey());
-        assertNull(result.getUserCert());
-        assertNull(result.getRsaPrivateKey());
-    }
-
-    @Test
-    public void testRsaFromVpnProfileDiscardsIrrelevantValues() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final VpnProfile profile = builder.build().toVpnProfile();
-        profile.username = USERNAME_STRING;
-        profile.password = PASSWORD_STRING;
-
-        final Ikev2VpnProfile result = Ikev2VpnProfile.fromVpnProfile(profile);
-        assertNull(result.getUsername());
-        assertNull(result.getPassword());
-        assertNull(result.getPresharedKey());
-    }
-
-    @Test
-    public void testPskConversionIsLossless() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthPsk(PSK_BYTES);
-        final Ikev2VpnProfile ikeProfile = builder.build();
-
-        assertEquals(ikeProfile, Ikev2VpnProfile.fromVpnProfile(ikeProfile.toVpnProfile()));
-    }
-
-    @Test
-    public void testUsernamePasswordConversionIsLossless() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa);
-        final Ikev2VpnProfile ikeProfile = builder.build();
-
-        assertEquals(ikeProfile, Ikev2VpnProfile.fromVpnProfile(ikeProfile.toVpnProfile()));
-    }
-
-    @Test
-    public void testRsaConversionIsLossless() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final Ikev2VpnProfile ikeProfile = builder.build();
-
-        assertEquals(ikeProfile, Ikev2VpnProfile.fromVpnProfile(ikeProfile.toVpnProfile()));
-    }
-
-    @Test
-    public void testBuildWithIkeTunConnParamsConvertToVpnProfile() throws Exception {
-        // Special keyId that contains delimiter character of VpnProfile
-        final byte[] keyId = "foo\0bar".getBytes();
-        final IkeTunnelConnectionParams tunnelParams = new IkeTunnelConnectionParams(
-                getTestIkeSessionParams(true /* testIpv6 */, new IkeKeyIdIdentification(keyId)),
-                CHILD_PARAMS);
-        final Ikev2VpnProfile ikev2VpnProfile = new Ikev2VpnProfile.Builder(tunnelParams).build();
-        final VpnProfile vpnProfile = ikev2VpnProfile.toVpnProfile();
-
-        assertEquals(VpnProfile.TYPE_IKEV2_FROM_IKE_TUN_CONN_PARAMS, vpnProfile.type);
-
-        // Username, password, server, ipsecIdentifier, ipsecCaCert, ipsecSecret, ipsecUserCert and
-        // getAllowedAlgorithms should not be set if IkeTunnelConnectionParams is set.
-        assertEquals("", vpnProfile.server);
-        assertEquals("", vpnProfile.ipsecIdentifier);
-        assertEquals("", vpnProfile.username);
-        assertEquals("", vpnProfile.password);
-        assertEquals("", vpnProfile.ipsecCaCert);
-        assertEquals("", vpnProfile.ipsecSecret);
-        assertEquals("", vpnProfile.ipsecUserCert);
-        assertEquals(0, vpnProfile.getAllowedAlgorithms().size());
-
-        // IkeTunnelConnectionParams should stay the same.
-        assertEquals(tunnelParams, vpnProfile.ikeTunConnParams);
-
-        // Convert to disk-stable format and then back to Ikev2VpnProfile should be the same.
-        final VpnProfile decodedVpnProfile =
-                VpnProfile.decode(vpnProfile.key, vpnProfile.encode());
-        final Ikev2VpnProfile convertedIkev2VpnProfile =
-                Ikev2VpnProfile.fromVpnProfile(decodedVpnProfile);
-        assertEquals(ikev2VpnProfile, convertedIkev2VpnProfile);
-    }
-
-    @Test
-    public void testConversionIsLosslessWithIkeTunConnParams() throws Exception {
-        final IkeTunnelConnectionParams tunnelParams =
-                new IkeTunnelConnectionParams(IKE_PARAMS_V6, CHILD_PARAMS);
-        // Config authentication related fields is not required while building with
-        // IkeTunnelConnectionParams.
-        final Ikev2VpnProfile ikeProfile = new Ikev2VpnProfile.Builder(tunnelParams).build();
-        assertEquals(ikeProfile, Ikev2VpnProfile.fromVpnProfile(ikeProfile.toVpnProfile()));
-    }
-
-    @Test
-    public void testAutomaticNattAndIpVersionConversionIsLossless() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        builder.setAutomaticNattKeepaliveTimerEnabled(true);
-        builder.setAutomaticIpVersionSelectionEnabled(true);
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final Ikev2VpnProfile ikeProfile = builder.build();
-
-        assertEquals(ikeProfile, Ikev2VpnProfile.fromVpnProfile(ikeProfile.toVpnProfile()));
-    }
-
-    @Test
-    public void testAutomaticNattAndIpVersionDefaults() throws Exception {
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        final Ikev2VpnProfile ikeProfile = builder.build();
-
-        assertEquals(false, ikeProfile.isAutomaticNattKeepaliveTimerEnabled());
-        assertEquals(false, ikeProfile.isAutomaticIpVersionSelectionEnabled());
-    }
-
-    @Test
-    public void testEquals() throws Exception {
-        // Verify building without IkeTunnelConnectionParams
-        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
-        builder.setAuthDigitalSignature(mUserCert, mPrivateKey, mServerRootCa);
-        assertEquals(builder.build(), builder.build());
-
-        // Verify building with IkeTunnelConnectionParams
-        final IkeTunnelConnectionParams tunnelParams =
-                new IkeTunnelConnectionParams(IKE_PARAMS_V6, CHILD_PARAMS);
-        final IkeTunnelConnectionParams tunnelParams2 =
-                new IkeTunnelConnectionParams(IKE_PARAMS_V6, CHILD_PARAMS);
-        assertEquals(new Ikev2VpnProfile.Builder(tunnelParams).build(),
-                new Ikev2VpnProfile.Builder(tunnelParams2).build());
-    }
-
-    @Test
-    public void testBuildProfileWithNullProxy() throws Exception {
-        final Ikev2VpnProfile ikev2VpnProfile =
-                new Ikev2VpnProfile.Builder(SERVER_ADDR_STRING, IDENTITY_STRING)
-                        .setAuthUsernamePassword(USERNAME_STRING, PASSWORD_STRING, mServerRootCa)
-                        .build();
-
-        // ProxyInfo should be null for the profile without setting ProxyInfo.
-        assertNull(ikev2VpnProfile.getProxyInfo());
-
-        // ProxyInfo should stay null after performing toVpnProfile() and fromVpnProfile()
-        final VpnProfile vpnProfile = ikev2VpnProfile.toVpnProfile();
-        assertNull(vpnProfile.proxy);
-
-        final Ikev2VpnProfile convertedIkev2VpnProfile = Ikev2VpnProfile.fromVpnProfile(vpnProfile);
-        assertNull(convertedIkev2VpnProfile.getProxyInfo());
-    }
-
-    private static class CertificateAndKey {
-        public final X509Certificate cert;
-        public final PrivateKey key;
-
-        CertificateAndKey(X509Certificate cert, PrivateKey key) {
-            this.cert = cert;
-            this.key = key;
-        }
-    }
-
-    private static CertificateAndKey generateRandomCertAndKeyPair() throws Exception {
-        final Date validityBeginDate =
-                new Date(System.currentTimeMillis() - TimeUnit.DAYS.toMillis(1L));
-        final Date validityEndDate =
-                new Date(System.currentTimeMillis() + TimeUnit.DAYS.toMillis(1L));
-
-        // Generate a keypair
-        final KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
-        keyPairGenerator.initialize(512);
-        final KeyPair keyPair = keyPairGenerator.generateKeyPair();
-
-        final X500Principal dnName = new X500Principal("CN=test.android.com");
-        final X509V1CertificateGenerator certGen = new X509V1CertificateGenerator();
-        certGen.setSerialNumber(BigInteger.valueOf(System.currentTimeMillis()));
-        certGen.setSubjectDN(dnName);
-        certGen.setIssuerDN(dnName);
-        certGen.setNotBefore(validityBeginDate);
-        certGen.setNotAfter(validityEndDate);
-        certGen.setPublicKey(keyPair.getPublic());
-        certGen.setSignatureAlgorithm("SHA256WithRSAEncryption");
-
-        final X509Certificate cert = certGen.generate(keyPair.getPrivate(), "AndroidOpenSSL");
-        return new CertificateAndKey(cert, keyPair.getPrivate());
-    }
-}
diff --git a/tests/unit/java/android/net/NetworkCallbackFlagsTest.kt b/tests/unit/java/android/net/NetworkCallbackFlagsTest.kt
new file mode 100644
index 0000000..af06a64
--- /dev/null
+++ b/tests/unit/java/android/net/NetworkCallbackFlagsTest.kt
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net
+
+import android.net.ConnectivityManager.NetworkCallback
+import android.net.ConnectivityManager.NetworkCallbackMethodsHolder
+import android.os.Build
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import java.lang.reflect.Method
+import java.lang.reflect.Modifier
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import kotlin.test.fail
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.any
+import org.mockito.Mockito.doCallRealMethod
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.mockingDetails
+
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+@RunWith(DevSdkIgnoreRunner::class)
+class NetworkCallbackFlagsTest {
+
+    // To avoid developers forgetting to update NETWORK_CB_METHODS when modifying NetworkCallbacks,
+    // or using wrong values, calculate it from annotations here and verify that it matches.
+    // This avoids the runtime cost of reflection, but still ensures that the list is correct.
+    @Test
+    fun testNetworkCallbackMethods_calculateFromAnnotations_matchesHardcodedList() {
+        val calculatedMethods = getNetworkCallbackMethodsFromAnnotations()
+        assertEquals(
+            calculatedMethods.toSet(),
+            NetworkCallbackMethodsHolder.NETWORK_CB_METHODS.map {
+                NetworkCallbackMethodWithEquals(
+                    it.mName,
+                    it.mParameterTypes.toList(),
+                    callbacksCallingThisMethod = it.mCallbacksCallingThisMethod
+                )
+            }.toSet()
+        )
+    }
+
+    data class NetworkCallbackMethodWithEquals(
+        val name: String,
+        val parameterTypes: List<Class<*>>,
+        val callbacksCallingThisMethod: Int
+    )
+
+    data class NetworkCallbackMethodBuilder(
+        val name: String,
+        val parameterTypes: List<Class<*>>,
+        val isFinal: Boolean,
+        val methodId: Int,
+        val mayCall: Set<Int>?,
+        var callbacksCallingThisMethod: Int
+    ) {
+        fun build() = NetworkCallbackMethodWithEquals(
+            name,
+            parameterTypes,
+            callbacksCallingThisMethod
+        )
+    }
+
+    /**
+     * Build [NetworkCallbackMethodsHolder.NETWORK_CB_METHODS] from [NetworkCallback] annotations.
+     */
+    private fun getNetworkCallbackMethodsFromAnnotations(): List<NetworkCallbackMethodWithEquals> {
+        val parsedMethods = mutableListOf<NetworkCallbackMethodBuilder>()
+        val methods = NetworkCallback::class.java.declaredMethods
+        methods.forEach { method ->
+            val cb = method.getAnnotation(
+                NetworkCallback.FilteredCallback::class.java
+            ) ?: return@forEach
+            val callbacksCallingThisMethod = if (cb.calledByCallbackId == 0) {
+                0
+            } else {
+                1 shl cb.calledByCallbackId
+            }
+            parsedMethods.add(
+                NetworkCallbackMethodBuilder(
+                    method.name,
+                    method.parameterTypes.toList(),
+                    Modifier.isFinal(method.modifiers),
+                    cb.methodId,
+                    cb.mayCall.toSet(),
+                    callbacksCallingThisMethod
+                )
+            )
+        }
+
+        // Propagate callbacksCallingThisMethod for transitive calls
+        do {
+            var hadChange = false
+            parsedMethods.forEach { caller ->
+                parsedMethods.forEach { callee ->
+                    if (caller.mayCall?.contains(callee.methodId) == true) {
+                        // Callbacks that call the caller also cause calls to the callee. So
+                        // callbacksCallingThisMethod for the callee should include
+                        // callbacksCallingThisMethod from the caller.
+                        val newValue =
+                            caller.callbacksCallingThisMethod or callee.callbacksCallingThisMethod
+                        hadChange = hadChange || callee.callbacksCallingThisMethod != newValue
+                        callee.callbacksCallingThisMethod = newValue
+                    }
+                }
+            }
+        } while (hadChange)
+
+        // Final methods may affect the flags for transitive calls, but cannot be overridden, so do
+        // not need to be in the list (no overridden method in NetworkCallback will match them).
+        return parsedMethods.filter { !it.isFinal }.map { it.build() }
+    }
+
+    @Test
+    fun testMethodsAreAnnotated() {
+        val annotations = NetworkCallback::class.java.declaredMethods.mapNotNull { method ->
+            if (!Modifier.isPublic(method.modifiers) && !Modifier.isProtected(method.modifiers)) {
+                return@mapNotNull null
+            }
+            val annotation = method.getAnnotation(NetworkCallback.FilteredCallback::class.java)
+            assertNotNull(annotation, "$method is missing the @FilteredCallback annotation")
+            return@mapNotNull annotation
+        }
+
+        annotations.groupingBy { it.methodId }.eachCount().forEach { (methodId, cnt) ->
+            assertEquals(1, cnt, "Method ID $methodId is used more than once in @FilteredCallback")
+        }
+    }
+
+    @Test
+    fun testObviousCalleesAreInAnnotation() {
+        NetworkCallback::class.java.declaredMethods.forEach { method ->
+            val annotation = method.getAnnotation(NetworkCallback.FilteredCallback::class.java)
+                ?: return@forEach
+            val missingFlags = getObviousCallees(method).toMutableSet().apply {
+                removeAll(annotation.mayCall.toSet())
+            }
+            val msg = "@FilteredCallback on $method is missing flags " +
+                    "$missingFlags in mayCall. There may be other " +
+                    "calls that are not detected if they are done conditionally."
+            assertEquals(emptySet(), missingFlags, msg)
+        }
+    }
+
+    /**
+     * Invoke the specified NetworkCallback method with mock arguments, return a set of transitively
+     * called methods.
+     *
+     * This provides an idea of which methods are transitively called by the specified method. It's
+     * not perfect as some callees could be called or not depending on the exact values of the mock
+     * arguments that are passed in (for example, onAvailable calls onNetworkSuspended only if the
+     * capabilities lack the NOT_SUSPENDED capability), but it should catch obvious forgotten calls.
+     */
+    private fun getObviousCallees(method: Method): Set<Int> {
+        // Create a mock NetworkCallback that mocks all methods except the one specified by the
+        // caller.
+        val mockCallback = mock(NetworkCallback::class.java)
+
+        if (!Modifier.isFinal(method.modifiers) ||
+            // The mock class will be NetworkCallback (not a subclass) if using mockito-inline,
+            // which mocks final methods too
+            mockCallback.javaClass == NetworkCallback::class.java) {
+            doCallRealMethod().`when`(mockCallback).let { mockObj ->
+                val anyArgs = method.parameterTypes.map { any(it) }
+                method.invoke(mockObj, *anyArgs.toTypedArray())
+            }
+        }
+
+        // Invoke the target method with mock parameters
+        val mockParameters = method.parameterTypes.map { getMockFor(method, it) }
+        method.invoke(mockCallback, *mockParameters.toTypedArray())
+
+        // Aggregate callees
+        val mockingDetails = mockingDetails(mockCallback)
+        return mockingDetails.invocations.mapNotNull { inv ->
+            if (inv.method == method) {
+                null
+            } else {
+                inv.method.getAnnotation(NetworkCallback.FilteredCallback::class.java)?.methodId
+            }
+        }.toSet()
+    }
+
+    private fun getMockFor(method: Method, c: Class<*>): Any {
+        if (!c.isPrimitive && !Modifier.isFinal(c.modifiers)) {
+            return mock(c)
+        }
+        return when (c) {
+            NetworkCapabilities::class.java -> NetworkCapabilities()
+            LinkProperties::class.java -> LinkProperties()
+            LocalNetworkInfo::class.java -> LocalNetworkInfo(null)
+            Boolean::class.java -> false
+            Int::class.java -> 0
+            else -> fail("No mock set for parameter type $c used in $method")
+        }
+    }
+}
diff --git a/tests/unit/java/android/net/BpfNetMapsReaderTest.kt b/tests/unit/java/android/net/NetworkStackBpfNetMapsTest.kt
similarity index 72%
rename from tests/unit/java/android/net/BpfNetMapsReaderTest.kt
rename to tests/unit/java/android/net/NetworkStackBpfNetMapsTest.kt
index 8919666..b5d78f3 100644
--- a/tests/unit/java/android/net/BpfNetMapsReaderTest.kt
+++ b/tests/unit/java/android/net/NetworkStackBpfNetMapsTest.kt
@@ -21,11 +21,13 @@
 import android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_KEY
 import android.net.BpfNetMapsConstants.DOZABLE_MATCH
 import android.net.BpfNetMapsConstants.HAPPY_BOX_MATCH
-import android.net.BpfNetMapsConstants.PENALTY_BOX_MATCH
+import android.net.BpfNetMapsConstants.PENALTY_BOX_ADMIN_MATCH
+import android.net.BpfNetMapsConstants.PENALTY_BOX_USER_MATCH
 import android.net.BpfNetMapsConstants.STANDBY_MATCH
 import android.net.BpfNetMapsConstants.UID_RULES_CONFIGURATION_KEY
 import android.net.BpfNetMapsUtils.getMatchByFirewallChain
 import android.os.Build.VERSION_CODES
+import android.os.Process.FIRST_APPLICATION_UID
 import com.android.net.module.util.IBpfMap
 import com.android.net.module.util.Struct.S32
 import com.android.net.module.util.Struct.U32
@@ -42,15 +44,15 @@
 import org.junit.Test
 import org.junit.runner.RunWith
 
-private const val TEST_UID1 = 1234
+private const val TEST_UID1 = 11234
 private const val TEST_UID2 = TEST_UID1 + 1
 private const val TEST_UID3 = TEST_UID2 + 1
 private const val NO_IIF = 0
 
-// pre-T devices does not support Bpf.
+// NetworkStack can not use this before U due to b/326143935
 @RunWith(DevSdkIgnoreRunner::class)
-@IgnoreUpTo(VERSION_CODES.S_V2)
-class BpfNetMapsReaderTest {
+@IgnoreUpTo(VERSION_CODES.TIRAMISU)
+class NetworkStackBpfNetMapsTest {
     @Rule
     @JvmField
     val ignoreRule = DevSdkIgnoreRule()
@@ -58,14 +60,15 @@
     private val testConfigurationMap: IBpfMap<S32, U32> = TestBpfMap()
     private val testUidOwnerMap: IBpfMap<S32, UidOwnerValue> = TestBpfMap()
     private val testDataSaverEnabledMap: IBpfMap<S32, U8> = TestBpfMap()
-    private val bpfNetMapsReader = BpfNetMapsReader(
-        TestDependencies(testConfigurationMap, testUidOwnerMap, testDataSaverEnabledMap))
+    private val bpfNetMapsReader = NetworkStackBpfNetMaps(
+        TestDependencies(testConfigurationMap, testUidOwnerMap, testDataSaverEnabledMap)
+    )
 
     class TestDependencies(
         private val configMap: IBpfMap<S32, U32>,
         private val uidOwnerMap: IBpfMap<S32, UidOwnerValue>,
         private val dataSaverEnabledMap: IBpfMap<S32, U8>
-    ) : BpfNetMapsReader.Dependencies() {
+    ) : NetworkStackBpfNetMaps.Dependencies() {
         override fun getConfigurationMap() = configMap
         override fun getUidOwnerMap() = uidOwnerMap
         override fun getDataSaverEnabledMap() = dataSaverEnabledMap
@@ -99,11 +102,20 @@
             Modifier.isStatic(it.modifiers) && it.name.startsWith("FIREWALL_CHAIN_")
         }
         // Verify the size matches, this also verifies no common item in allow and deny chains.
-        assertEquals(BpfNetMapsConstants.ALLOW_CHAINS.size +
-                BpfNetMapsConstants.DENY_CHAINS.size, declaredChains.size)
+        assertEquals(
+                BpfNetMapsConstants.ALLOW_CHAINS.size +
+                        BpfNetMapsConstants.DENY_CHAINS.size +
+                        BpfNetMapsConstants.METERED_ALLOW_CHAINS.size +
+                        BpfNetMapsConstants.METERED_DENY_CHAINS.size,
+            declaredChains.size
+        )
         declaredChains.forEach {
-            assertTrue(BpfNetMapsConstants.ALLOW_CHAINS.contains(it.get(null)) ||
-                    BpfNetMapsConstants.DENY_CHAINS.contains(it.get(null)))
+            assertTrue(
+                    BpfNetMapsConstants.ALLOW_CHAINS.contains(it.get(null)) ||
+                            BpfNetMapsConstants.METERED_ALLOW_CHAINS.contains(it.get(null)) ||
+                            BpfNetMapsConstants.DENY_CHAINS.contains(it.get(null)) ||
+                            BpfNetMapsConstants.METERED_DENY_CHAINS.contains(it.get(null))
+            )
         }
     }
 
@@ -117,11 +129,17 @@
         testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(newConfig))
     }
 
-    fun isUidNetworkingBlocked(uid: Int, metered: Boolean = false, dataSaver: Boolean = false) =
-            bpfNetMapsReader.isUidNetworkingBlocked(uid, metered, dataSaver)
+    private fun mockDataSaverEnabled(enabled: Boolean) {
+        val dataSaverValue = if (enabled) {DATA_SAVER_ENABLED} else {DATA_SAVER_DISABLED}
+        testDataSaverEnabledMap.updateEntry(DATA_SAVER_ENABLED_KEY, U8(dataSaverValue))
+    }
+
+    fun isUidNetworkingBlocked(uid: Int, metered: Boolean = false) =
+            bpfNetMapsReader.isUidNetworkingBlocked(uid, metered)
 
     @Test
     fun testIsUidNetworkingBlockedByFirewallChains_allowChain() {
+        mockDataSaverEnabled(enabled = false)
         // With everything disabled by default, verify the return value is false.
         testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(0))
         assertFalse(isUidNetworkingBlocked(TEST_UID1))
@@ -141,6 +159,7 @@
 
     @Test
     fun testIsUidNetworkingBlockedByFirewallChains_denyChain() {
+        mockDataSaverEnabled(enabled = false)
         // Enable standby chain but does not provide denied list. Verify the network is allowed
         // for all uids.
         testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(0))
@@ -162,47 +181,67 @@
         testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(0))
         mockChainEnabled(ConnectivityManager.FIREWALL_CHAIN_POWERSAVE, true)
         mockChainEnabled(ConnectivityManager.FIREWALL_CHAIN_STANDBY, true)
+        mockDataSaverEnabled(enabled = false)
         assertTrue(isUidNetworkingBlocked(TEST_UID1))
     }
 
     @IgnoreUpTo(VERSION_CODES.S_V2)
     @Test
     fun testIsUidNetworkingBlockedByDataSaver() {
+        mockDataSaverEnabled(enabled = false)
         // With everything disabled by default, verify the return value is false.
         testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(0))
         assertFalse(isUidNetworkingBlocked(TEST_UID1, metered = true))
 
         // Add uid1 to penalty box, verify the network is blocked for uid1, while uid2 is not
         // affected.
-        testUidOwnerMap.updateEntry(S32(TEST_UID1), UidOwnerValue(NO_IIF, PENALTY_BOX_MATCH))
+        testUidOwnerMap.updateEntry(S32(TEST_UID1), UidOwnerValue(NO_IIF, PENALTY_BOX_USER_MATCH))
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertFalse(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        testUidOwnerMap.updateEntry(S32(TEST_UID1), UidOwnerValue(NO_IIF, PENALTY_BOX_ADMIN_MATCH))
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertFalse(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        testUidOwnerMap.updateEntry(
+                S32(TEST_UID1),
+                UidOwnerValue(NO_IIF, PENALTY_BOX_USER_MATCH or PENALTY_BOX_ADMIN_MATCH)
+        )
         assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
         assertFalse(isUidNetworkingBlocked(TEST_UID2, metered = true))
 
         // Enable data saver, verify the network is blocked for uid1, uid2, but uid3 in happy box
         // is not affected.
+        mockDataSaverEnabled(enabled = true)
         testUidOwnerMap.updateEntry(S32(TEST_UID3), UidOwnerValue(NO_IIF, HAPPY_BOX_MATCH))
-        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true, dataSaver = true))
-        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true, dataSaver = true))
-        assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true, dataSaver = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true))
 
         // Add uid1 to happy box as well, verify nothing is changed because penalty box has higher
         // priority.
         testUidOwnerMap.updateEntry(
             S32(TEST_UID1),
-            UidOwnerValue(NO_IIF, PENALTY_BOX_MATCH or HAPPY_BOX_MATCH)
+            UidOwnerValue(NO_IIF, PENALTY_BOX_USER_MATCH or HAPPY_BOX_MATCH)
         )
-        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true, dataSaver = true))
-        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true, dataSaver = true))
-        assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true, dataSaver = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true))
+        testUidOwnerMap.updateEntry(
+                S32(TEST_UID1),
+                UidOwnerValue(NO_IIF, PENALTY_BOX_ADMIN_MATCH or HAPPY_BOX_MATCH)
+        )
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true))
 
         // Enable doze mode, verify uid3 is blocked even if it is in happy box.
         mockChainEnabled(ConnectivityManager.FIREWALL_CHAIN_DOZABLE, true)
-        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true, dataSaver = true))
-        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true, dataSaver = true))
-        assertTrue(isUidNetworkingBlocked(TEST_UID3, metered = true, dataSaver = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID2, metered = true))
+        assertTrue(isUidNetworkingBlocked(TEST_UID3, metered = true))
 
         // Disable doze mode and data saver, only uid1 which is in penalty box is blocked.
         mockChainEnabled(ConnectivityManager.FIREWALL_CHAIN_DOZABLE, false)
+        mockDataSaverEnabled(enabled = false)
         assertTrue(isUidNetworkingBlocked(TEST_UID1, metered = true))
         assertFalse(isUidNetworkingBlocked(TEST_UID2, metered = true))
         assertFalse(isUidNetworkingBlocked(TEST_UID3, metered = true))
@@ -214,6 +253,24 @@
     }
 
     @Test
+    fun testIsUidNetworkingBlocked_SystemUid() {
+        mockDataSaverEnabled(enabled = false)
+        testConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, U32(0))
+        mockChainEnabled(ConnectivityManager.FIREWALL_CHAIN_DOZABLE, true)
+
+        for (uid in FIRST_APPLICATION_UID - 5..FIRST_APPLICATION_UID + 5) {
+            // system uid is not blocked regardless of firewall chains
+            val expectBlocked = uid >= FIRST_APPLICATION_UID
+            testUidOwnerMap.updateEntry(S32(uid), UidOwnerValue(NO_IIF, PENALTY_BOX_USER_MATCH))
+            assertEquals(
+                expectBlocked,
+                    isUidNetworkingBlocked(uid, metered = true),
+                    "isUidNetworkingBlocked returns unexpected value for uid = " + uid
+            )
+        }
+    }
+
+    @Test
     fun testGetDataSaverEnabled() {
         testDataSaverEnabledMap.updateEntry(DATA_SAVER_ENABLED_KEY, U8(DATA_SAVER_DISABLED))
         assertFalse(bpfNetMapsReader.dataSaverEnabled)
diff --git a/tests/unit/java/android/net/VpnManagerTest.java b/tests/unit/java/android/net/VpnManagerTest.java
deleted file mode 100644
index 2ab4e45..0000000
--- a/tests/unit/java/android/net/VpnManagerTest.java
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.net;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assume.assumeFalse;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-import android.content.ComponentName;
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.os.Build;
-import android.test.mock.MockContext;
-import android.util.SparseArray;
-
-import androidx.test.filters.SmallTest;
-import androidx.test.InstrumentationRegistry;
-
-import com.android.internal.net.VpnProfile;
-import com.android.internal.util.MessageUtils;
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRunner;
-
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-/** Unit tests for {@link VpnManager}. */
-@SmallTest
-@RunWith(DevSdkIgnoreRunner.class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class VpnManagerTest {
-
-    private static final String PKG_NAME = "fooPackage";
-
-    private static final String SESSION_NAME_STRING = "testSession";
-    private static final String SERVER_ADDR_STRING = "1.2.3.4";
-    private static final String IDENTITY_STRING = "Identity";
-    private static final byte[] PSK_BYTES = "preSharedKey".getBytes();
-
-    private IVpnManager mMockService;
-    private VpnManager mVpnManager;
-    private final MockContext mMockContext =
-            new MockContext() {
-                @Override
-                public String getOpPackageName() {
-                    return PKG_NAME;
-                }
-            };
-
-    @Before
-    public void setUp() throws Exception {
-        assumeFalse("Skipping test because watches don't support VPN",
-            InstrumentationRegistry.getContext().getPackageManager().hasSystemFeature(
-                PackageManager.FEATURE_WATCH));
-        mMockService = mock(IVpnManager.class);
-        mVpnManager = new VpnManager(mMockContext, mMockService);
-    }
-
-    @Test
-    public void testProvisionVpnProfilePreconsented() throws Exception {
-        final PlatformVpnProfile profile = getPlatformVpnProfile();
-        when(mMockService.provisionVpnProfile(any(VpnProfile.class), eq(PKG_NAME)))
-                .thenReturn(true);
-
-        // Expect there to be no intent returned, as consent has already been granted.
-        assertNull(mVpnManager.provisionVpnProfile(profile));
-        verify(mMockService).provisionVpnProfile(eq(profile.toVpnProfile()), eq(PKG_NAME));
-    }
-
-    @Test
-    public void testProvisionVpnProfileNeedsConsent() throws Exception {
-        final PlatformVpnProfile profile = getPlatformVpnProfile();
-        when(mMockService.provisionVpnProfile(any(VpnProfile.class), eq(PKG_NAME)))
-                .thenReturn(false);
-
-        // Expect intent to be returned, as consent has not already been granted.
-        final Intent intent = mVpnManager.provisionVpnProfile(profile);
-        assertNotNull(intent);
-
-        final ComponentName expectedComponentName =
-                ComponentName.unflattenFromString(
-                        "com.android.vpndialogs/com.android.vpndialogs.PlatformVpnConfirmDialog");
-        assertEquals(expectedComponentName, intent.getComponent());
-        verify(mMockService).provisionVpnProfile(eq(profile.toVpnProfile()), eq(PKG_NAME));
-    }
-
-    @Test
-    public void testDeleteProvisionedVpnProfile() throws Exception {
-        mVpnManager.deleteProvisionedVpnProfile();
-        verify(mMockService).deleteVpnProfile(eq(PKG_NAME));
-    }
-
-    @Test
-    public void testStartProvisionedVpnProfile() throws Exception {
-        mVpnManager.startProvisionedVpnProfile();
-        verify(mMockService).startVpnProfile(eq(PKG_NAME));
-    }
-
-    @Test
-    public void testStopProvisionedVpnProfile() throws Exception {
-        mVpnManager.stopProvisionedVpnProfile();
-        verify(mMockService).stopVpnProfile(eq(PKG_NAME));
-    }
-
-    private Ikev2VpnProfile getPlatformVpnProfile() throws Exception {
-        return new Ikev2VpnProfile.Builder(SERVER_ADDR_STRING, IDENTITY_STRING)
-                .setBypassable(true)
-                .setMaxMtu(1300)
-                .setMetered(true)
-                .setAuthPsk(PSK_BYTES)
-                .build();
-    }
-
-    @Test
-    public void testVpnTypesEqual() throws Exception {
-        SparseArray<String> vmVpnTypes = MessageUtils.findMessageNames(
-                new Class[] { VpnManager.class }, new String[]{ "TYPE_VPN_" });
-        SparseArray<String> nativeVpnType = MessageUtils.findMessageNames(
-                new Class[] { NativeVpnType.class }, new String[]{ "" });
-
-        // TYPE_VPN_NONE = -1 is only defined in VpnManager.
-        assertEquals(vmVpnTypes.size() - 1, nativeVpnType.size());
-        for (int i = VpnManager.TYPE_VPN_SERVICE; i < vmVpnTypes.size(); i++) {
-            assertEquals(vmVpnTypes.get(i), "TYPE_VPN_" + nativeVpnType.get(i));
-        }
-    }
-}
diff --git a/tests/unit/java/android/net/nsd/AdvertisingRequestTest.kt b/tests/unit/java/android/net/nsd/AdvertisingRequestTest.kt
index 332f2a3..c491f37 100644
--- a/tests/unit/java/android/net/nsd/AdvertisingRequestTest.kt
+++ b/tests/unit/java/android/net/nsd/AdvertisingRequestTest.kt
@@ -54,17 +54,17 @@
         assertEquals(beforeParcel.advertisingConfig, afterParcel.advertisingConfig)
     }
 
-@Test
-fun testBuilder_setNullTtl_success() {
-    val info = NsdServiceInfo().apply {
-        serviceType = "_ipp._tcp"
-    }
-    val request = AdvertisingRequest.Builder(info, PROTOCOL_DNS_SD)
-            .setTtl(null)
-            .build()
+    @Test
+    fun testBuilder_setNullTtl_success() {
+        val info = NsdServiceInfo().apply {
+            serviceType = "_ipp._tcp"
+        }
+        val request = AdvertisingRequest.Builder(info, PROTOCOL_DNS_SD)
+                .setTtl(null)
+                .build()
 
-    assertNull(request.ttl)
-}
+        assertNull(request.ttl)
+    }
 
     @Test
     fun testBuilder_setPropertiesSuccess() {
diff --git a/tests/unit/java/android/net/nsd/NsdManagerTest.java b/tests/unit/java/android/net/nsd/NsdManagerTest.java
index 76a649e..9c812a1 100644
--- a/tests/unit/java/android/net/nsd/NsdManagerTest.java
+++ b/tests/unit/java/android/net/nsd/NsdManagerTest.java
@@ -16,6 +16,11 @@
 
 package android.net.nsd;
 
+import static android.net.InetAddresses.parseNumericAddress;
+import static android.net.nsd.NsdManager.checkServiceInfoForRegistration;
+
+import static com.android.net.module.util.HexDump.hexStringToByteArray;
+
 import static libcore.junit.util.compat.CoreCompatChangeRule.DisableCompatChanges;
 import static libcore.junit.util.compat.CoreCompatChangeRule.EnableCompatChanges;
 
@@ -54,6 +59,7 @@
 import org.mockito.MockitoAnnotations;
 
 import java.net.InetAddress;
+import java.util.Collections;
 import java.util.List;
 import java.time.Duration;
 
@@ -240,7 +246,7 @@
 
         AdvertisingRequest capturedRequest = getAdvertisingRequest(
                 req -> verify(mServiceConn).registerService(anyInt(), req.capture()));
-        assertEquals(request, capturedRequest);
+        assertEquals(request.getTtl(), capturedRequest.getTtl());
     }
 
     private void doTestRegisterService() throws Exception {
@@ -395,6 +401,7 @@
         NsdManager.RegistrationListener listener4 = mock(NsdManager.RegistrationListener.class);
         NsdManager.RegistrationListener listener5 = mock(NsdManager.RegistrationListener.class);
         NsdManager.RegistrationListener listener6 = mock(NsdManager.RegistrationListener.class);
+        NsdManager.RegistrationListener listener7 = mock(NsdManager.RegistrationListener.class);
 
         NsdServiceInfo invalidService = new NsdServiceInfo(null, null);
         NsdServiceInfo validService = new NsdServiceInfo("a_name", "_a_type._tcp");
@@ -439,6 +446,19 @@
         validServiceWithCustomHostNoAddresses.setPort(2222);
         validServiceWithCustomHostNoAddresses.setHostname("a_host");
 
+        NsdServiceInfo validServiceWithPublicKey = new NsdServiceInfo("a_name", "_a_type._tcp");
+        validServiceWithPublicKey.setPublicKey(
+                hexStringToByteArray(
+                        "0201030dc141d0637960b98cbc12cfca"
+                                + "221d2879dac26ee5b460e9007c992e19"
+                                + "02d897c391b03764d448f7d0c772fdb0"
+                                + "3b1d9d6d52ff8886769e8e2362513565"
+                                + "270962d3"));
+
+        NsdServiceInfo invalidServiceWithTooShortPublicKey =
+                new NsdServiceInfo("a_name", "_a_type._tcp");
+        invalidServiceWithTooShortPublicKey.setPublicKey(hexStringToByteArray("0201"));
+
         // Service registration
         //  - invalid arguments
         mustFail(() -> { manager.unregisterService(null); });
@@ -449,6 +469,8 @@
         mustFail(() -> { manager.registerService(validService, PROTOCOL, null); });
         mustFail(() -> {
             manager.registerService(invalidMissingHostnameWithAddresses, PROTOCOL, listener1); });
+        mustFail(() -> {
+            manager.registerService(invalidServiceWithTooShortPublicKey, PROTOCOL, listener1); });
         manager.registerService(validService, PROTOCOL, listener1);
         //  - update without subtype is not allowed
         mustFail(() -> { manager.registerService(validServiceDuplicate, PROTOCOL, listener1); });
@@ -479,6 +501,9 @@
         //  - registering a service with a custom host with no addresses is valid
         manager.registerService(validServiceWithCustomHostNoAddresses, PROTOCOL, listener6);
         manager.unregisterService(listener6);
+        //  - registering a service with a public key is valid
+        manager.registerService(validServiceWithPublicKey, PROTOCOL, listener7);
+        manager.unregisterService(listener7);
 
         // Discover service
         //  - invalid arguments
@@ -506,6 +531,229 @@
         mustFail(() -> { manager.resolveService(validService, listener3); });
     }
 
+    private static final class NsdServiceInfoBuilder {
+        private static final String SERVICE_NAME = "TestService";
+        private static final String SERVICE_TYPE = "_testservice._tcp";
+        private static final int SERVICE_PORT = 12345;
+        private static final String HOSTNAME = "TestHost";
+        private static final List<InetAddress> HOST_ADDRESSES =
+                List.of(parseNumericAddress("192.168.2.23"), parseNumericAddress("2001:db8::3"));
+        private static final byte[] PUBLIC_KEY =
+                hexStringToByteArray(
+                        "0201030dc141d0637960b98cbc12cfca"
+                                + "221d2879dac26ee5b460e9007c992e19"
+                                + "02d897c391b03764d448f7d0c772fdb0"
+                                + "3b1d9d6d52ff8886769e8e2362513565"
+                                + "270962d3");
+
+        private final NsdServiceInfo mNsdServiceInfo = new NsdServiceInfo();
+
+        NsdServiceInfo build() {
+            return mNsdServiceInfo;
+        }
+
+        NsdServiceInfoBuilder setNoService() {
+            mNsdServiceInfo.setServiceName(null);
+            mNsdServiceInfo.setServiceType(null);
+            mNsdServiceInfo.setPort(0);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setService() {
+            mNsdServiceInfo.setServiceName(SERVICE_NAME);
+            mNsdServiceInfo.setServiceType(SERVICE_TYPE);
+            mNsdServiceInfo.setPort(SERVICE_PORT);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setZeroPortService() {
+            mNsdServiceInfo.setServiceName(SERVICE_NAME);
+            mNsdServiceInfo.setServiceType(SERVICE_TYPE);
+            mNsdServiceInfo.setPort(0);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setInvalidService() {
+            mNsdServiceInfo.setServiceName(SERVICE_NAME);
+            mNsdServiceInfo.setServiceType(null);
+            mNsdServiceInfo.setPort(SERVICE_PORT);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setDefaultHost() {
+            mNsdServiceInfo.setHostname(null);
+            mNsdServiceInfo.setHostAddresses(Collections.emptyList());
+            return this;
+        }
+
+        NsdServiceInfoBuilder setCustomHost() {
+            mNsdServiceInfo.setHostname(HOSTNAME);
+            mNsdServiceInfo.setHostAddresses(HOST_ADDRESSES);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setCustomHostNoAddress() {
+            mNsdServiceInfo.setHostname(HOSTNAME);
+            mNsdServiceInfo.setHostAddresses(Collections.emptyList());
+            return this;
+        }
+
+        NsdServiceInfoBuilder setHostAddressesNoHostname() {
+            mNsdServiceInfo.setHostname(null);
+            mNsdServiceInfo.setHostAddresses(HOST_ADDRESSES);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setNoPublicKey() {
+            mNsdServiceInfo.setPublicKey(null);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setPublicKey() {
+            mNsdServiceInfo.setPublicKey(PUBLIC_KEY);
+            return this;
+        }
+
+        NsdServiceInfoBuilder setInvalidPublicKey() {
+            mNsdServiceInfo.setPublicKey(new byte[3]);
+            return this;
+        }
+    }
+
+    @Test
+    public void testCheckServiceInfoForRegistration() {
+        // The service is invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setInvalidService()
+                        .setCustomHost()
+                        .setPublicKey().build()));
+        // Keep compatible with the legacy behavior: It's allowed to set host
+        // addresses for a service registration although the host addresses
+        // won't be registered. To register the addresses for a host, the
+        // hostname must be specified.
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setHostAddressesNoHostname()
+                        .setPublicKey().build());
+        // The public key is invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setCustomHost()
+                        .setInvalidPublicKey().build()));
+        // Invalid combinations
+        // 1. (service, custom host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setCustomHost()
+                        .setPublicKey().build());
+        // 2. (service, custom host, no key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setCustomHost()
+                        .setNoPublicKey().build());
+        // 3. (service, no-address custom host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setCustomHostNoAddress()
+                        .setPublicKey().build());
+        // 4. (service, no-address custom host, no key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setCustomHostNoAddress()
+                        .setNoPublicKey().build());
+        // 5. (service, default host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setDefaultHost()
+                        .setPublicKey().build());
+        // 6. (service, default host, no key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setService()
+                        .setDefaultHost()
+                        .setNoPublicKey().build());
+        // 7. (0-port service, custom host, valid key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setCustomHost()
+                        .setPublicKey().build());
+        // 8. (0-port service, custom host, no key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setCustomHost()
+                        .setNoPublicKey().build()));
+        // 9. (0-port service, no-address custom host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setCustomHostNoAddress()
+                        .setPublicKey().build());
+        // 10. (0-port service, no-address custom host, no key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setCustomHostNoAddress()
+                        .setNoPublicKey().build()));
+        // 11. (0-port service, default host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setDefaultHost()
+                        .setPublicKey().build());
+        // 12. (0-port service, default host, no key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setZeroPortService()
+                        .setDefaultHost()
+                        .setNoPublicKey().build()));
+        // 13. (no service, custom host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setCustomHost()
+                        .setPublicKey().build());
+        // 14. (no service, custom host, no key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setCustomHost()
+                        .setNoPublicKey().build());
+        // 15. (no service, no-address custom host, key): valid
+        checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setCustomHostNoAddress()
+                        .setPublicKey().build());
+        // 16. (no service, no-address custom host, no key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setCustomHostNoAddress()
+                        .setNoPublicKey().build()));
+        // 17. (no service, default host, key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setDefaultHost()
+                        .setPublicKey().build()));
+        // 18. (no service, default host, no key): invalid
+        mustFail(() -> checkServiceInfoForRegistration(
+                new NsdServiceInfoBuilder()
+                        .setNoService()
+                        .setDefaultHost()
+                        .setNoPublicKey().build()));
+    }
+
     public void mustFail(Runnable fn) {
         try {
             fn.run();
diff --git a/tests/unit/java/android/net/nsd/NsdServiceInfoTest.kt b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.kt
new file mode 100644
index 0000000..8f86f06
--- /dev/null
+++ b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.kt
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.nsd
+
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.ConnectivityModuleTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+/** Unit tests for {@link NsdServiceInfo}. */
+@SmallTest
+@ConnectivityModuleTest
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class NsdServiceInfoTest {
+    @Test
+    fun testToString_txtRecord() {
+        val info = NsdServiceInfo().apply {
+            this.setAttribute("abc", byteArrayOf(0xff.toByte(), 0xfe.toByte()))
+            this.setAttribute("def", null as String?)
+            this.setAttribute("ghi", "猫")
+            this.setAttribute("jkl", byteArrayOf(0, 0x21))
+            this.setAttribute("mno", "Hey Tom! It's you?.~{}")
+        }
+
+        val infoStr = info.toString()
+
+        assertTrue(
+            infoStr.contains("txtRecord: " +
+                "{abc=0xFFFE, def=(null), ghi=0xE78CAB, jkl=0x0021, mno=Hey Tom! It's you?.~{}}"),
+            infoStr)
+    }
+}
diff --git a/tests/unit/java/com/android/internal/net/VpnProfileTest.java b/tests/unit/java/com/android/internal/net/VpnProfileTest.java
deleted file mode 100644
index acae7d2..0000000
--- a/tests/unit/java/com/android/internal/net/VpnProfileTest.java
+++ /dev/null
@@ -1,323 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.internal.net;
-
-import static android.net.cts.util.IkeSessionTestUtils.CHILD_PARAMS;
-import static android.net.cts.util.IkeSessionTestUtils.IKE_PARAMS_V4;
-
-import static com.android.modules.utils.build.SdkLevel.isAtLeastT;
-import static com.android.modules.utils.build.SdkLevel.isAtLeastU;
-import static com.android.testutils.ParcelUtils.assertParcelSane;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.assertNotSame;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertTrue;
-
-import android.net.IpSecAlgorithm;
-import android.net.ipsec.ike.IkeTunnelConnectionParams;
-import android.os.Build;
-
-import androidx.test.filters.SmallTest;
-
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRunner;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-/** Unit tests for {@link VpnProfile}. */
-@SmallTest
-@RunWith(DevSdkIgnoreRunner.class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-public class VpnProfileTest {
-    private static final String DUMMY_PROFILE_KEY = "Test";
-
-    private static final int ENCODED_INDEX_AUTH_PARAMS_INLINE = 23;
-    private static final int ENCODED_INDEX_RESTRICTED_TO_TEST_NETWORKS = 24;
-    private static final int ENCODED_INDEX_EXCLUDE_LOCAL_ROUTE = 25;
-    private static final int ENCODED_INDEX_REQUIRE_PLATFORM_VALIDATION = 26;
-    private static final int ENCODED_INDEX_IKE_TUN_CONN_PARAMS = 27;
-    private static final int ENCODED_INDEX_AUTOMATIC_NATT_KEEPALIVE_TIMER_ENABLED = 28;
-    private static final int ENCODED_INDEX_AUTOMATIC_IP_VERSION_SELECTION_ENABLED = 29;
-
-    @Test
-    public void testDefaults() throws Exception {
-        final VpnProfile p = new VpnProfile(DUMMY_PROFILE_KEY);
-
-        assertEquals(DUMMY_PROFILE_KEY, p.key);
-        assertEquals("", p.name);
-        assertEquals(VpnProfile.TYPE_PPTP, p.type);
-        assertEquals("", p.server);
-        assertEquals("", p.username);
-        assertEquals("", p.password);
-        assertEquals("", p.dnsServers);
-        assertEquals("", p.searchDomains);
-        assertEquals("", p.routes);
-        assertTrue(p.mppe);
-        assertEquals("", p.l2tpSecret);
-        assertEquals("", p.ipsecIdentifier);
-        assertEquals("", p.ipsecSecret);
-        assertEquals("", p.ipsecUserCert);
-        assertEquals("", p.ipsecCaCert);
-        assertEquals("", p.ipsecServerCert);
-        assertEquals(null, p.proxy);
-        assertTrue(p.getAllowedAlgorithms() != null && p.getAllowedAlgorithms().isEmpty());
-        assertFalse(p.isBypassable);
-        assertFalse(p.isMetered);
-        assertEquals(1360, p.maxMtu);
-        assertFalse(p.areAuthParamsInline);
-        assertFalse(p.isRestrictedToTestNetworks);
-        assertFalse(p.excludeLocalRoutes);
-        assertFalse(p.requiresInternetValidation);
-        assertFalse(p.automaticNattKeepaliveTimerEnabled);
-        assertFalse(p.automaticIpVersionSelectionEnabled);
-    }
-
-    private VpnProfile getSampleIkev2Profile(String key) {
-        final VpnProfile p = new VpnProfile(key, true /* isRestrictedToTestNetworks */,
-                false /* excludesLocalRoutes */, true /* requiresPlatformValidation */,
-                null /* ikeTunConnParams */, true /* mAutomaticNattKeepaliveTimerEnabled */,
-                true /* automaticIpVersionSelectionEnabled */);
-
-        p.name = "foo";
-        p.type = VpnProfile.TYPE_IKEV2_IPSEC_USER_PASS;
-        p.server = "bar";
-        p.username = "baz";
-        p.password = "qux";
-        p.dnsServers = "8.8.8.8";
-        p.searchDomains = "";
-        p.routes = "0.0.0.0/0";
-        p.mppe = false;
-        p.l2tpSecret = "";
-        p.ipsecIdentifier = "quux";
-        p.ipsecSecret = "quuz";
-        p.ipsecUserCert = "corge";
-        p.ipsecCaCert = "grault";
-        p.ipsecServerCert = "garply";
-        p.proxy = null;
-        p.setAllowedAlgorithms(
-                Arrays.asList(
-                        IpSecAlgorithm.AUTH_CRYPT_AES_GCM,
-                        IpSecAlgorithm.AUTH_CRYPT_CHACHA20_POLY1305,
-                        IpSecAlgorithm.AUTH_HMAC_SHA512,
-                        IpSecAlgorithm.CRYPT_AES_CBC));
-        p.isBypassable = true;
-        p.isMetered = true;
-        p.maxMtu = 1350;
-        p.areAuthParamsInline = true;
-
-        // Not saved, but also not compared.
-        p.saveLogin = true;
-
-        return p;
-    }
-
-    private VpnProfile getSampleIkev2ProfileWithIkeTunConnParams(String key) {
-        final VpnProfile p = new VpnProfile(key, true /* isRestrictedToTestNetworks */,
-                false /* excludesLocalRoutes */, true /* requiresPlatformValidation */,
-                new IkeTunnelConnectionParams(IKE_PARAMS_V4, CHILD_PARAMS),
-                true /* mAutomaticNattKeepaliveTimerEnabled */,
-                true /* automaticIpVersionSelectionEnabled */);
-
-        p.name = "foo";
-        p.server = "bar";
-        p.dnsServers = "8.8.8.8";
-        p.searchDomains = "";
-        p.routes = "0.0.0.0/0";
-        p.mppe = false;
-        p.proxy = null;
-        p.setAllowedAlgorithms(
-                Arrays.asList(
-                        IpSecAlgorithm.AUTH_CRYPT_AES_GCM,
-                        IpSecAlgorithm.AUTH_CRYPT_CHACHA20_POLY1305,
-                        IpSecAlgorithm.AUTH_HMAC_SHA512,
-                        IpSecAlgorithm.CRYPT_AES_CBC));
-        p.isBypassable = true;
-        p.isMetered = true;
-        p.maxMtu = 1350;
-        p.areAuthParamsInline = true;
-
-        // Not saved, but also not compared.
-        p.saveLogin = true;
-
-        return p;
-    }
-
-    @Test
-    public void testEquals() {
-        assertEquals(
-                getSampleIkev2Profile(DUMMY_PROFILE_KEY), getSampleIkev2Profile(DUMMY_PROFILE_KEY));
-
-        final VpnProfile modified = getSampleIkev2Profile(DUMMY_PROFILE_KEY);
-        modified.maxMtu--;
-        assertNotEquals(getSampleIkev2Profile(DUMMY_PROFILE_KEY), modified);
-    }
-
-    @Test
-    public void testParcelUnparcel() {
-        if (isAtLeastU()) {
-            // automaticNattKeepaliveTimerEnabled, automaticIpVersionSelectionEnabled added in U.
-            assertParcelSane(getSampleIkev2Profile(DUMMY_PROFILE_KEY), 28);
-            assertParcelSane(getSampleIkev2ProfileWithIkeTunConnParams(DUMMY_PROFILE_KEY), 28);
-        } else if (isAtLeastT()) {
-            // excludeLocalRoutes, requiresPlatformValidation were added in T.
-            assertParcelSane(getSampleIkev2Profile(DUMMY_PROFILE_KEY), 26);
-            assertParcelSane(getSampleIkev2ProfileWithIkeTunConnParams(DUMMY_PROFILE_KEY), 26);
-        } else {
-            assertParcelSane(getSampleIkev2Profile(DUMMY_PROFILE_KEY), 23);
-        }
-    }
-
-    @Test
-    public void testEncodeDecodeWithIkeTunConnParams() {
-        final VpnProfile profile = getSampleIkev2ProfileWithIkeTunConnParams(DUMMY_PROFILE_KEY);
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, profile.encode());
-        assertEquals(profile, decoded);
-    }
-
-    @Test
-    public void testEncodeDecode() {
-        final VpnProfile profile = getSampleIkev2Profile(DUMMY_PROFILE_KEY);
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, profile.encode());
-        assertEquals(profile, decoded);
-    }
-
-    @Test
-    public void testEncodeDecodeTooManyValues() {
-        final VpnProfile profile = getSampleIkev2Profile(DUMMY_PROFILE_KEY);
-        final byte[] tooManyValues =
-                (new String(profile.encode()) + VpnProfile.VALUE_DELIMITER + "invalid").getBytes();
-
-        assertNull(VpnProfile.decode(DUMMY_PROFILE_KEY, tooManyValues));
-    }
-
-    private String getEncodedDecodedIkev2ProfileMissingValues(int... missingIndices) {
-        // Sort to ensure when we remove, we can do it from greatest first.
-        Arrays.sort(missingIndices);
-
-        final String encoded = new String(getSampleIkev2Profile(DUMMY_PROFILE_KEY).encode());
-        final List<String> parts =
-                new ArrayList<>(Arrays.asList(encoded.split(VpnProfile.VALUE_DELIMITER)));
-
-        // Remove from back first to ensure indexing is consistent.
-        for (int i = missingIndices.length - 1; i >= 0; i--) {
-            parts.remove(missingIndices[i]);
-        }
-
-        return String.join(VpnProfile.VALUE_DELIMITER, parts.toArray(new String[0]));
-    }
-
-    @Test
-    public void testEncodeDecodeInvalidNumberOfValues() {
-        final String tooFewValues =
-                getEncodedDecodedIkev2ProfileMissingValues(
-                        ENCODED_INDEX_AUTH_PARAMS_INLINE,
-                        ENCODED_INDEX_RESTRICTED_TO_TEST_NETWORKS,
-                        ENCODED_INDEX_EXCLUDE_LOCAL_ROUTE,
-                        ENCODED_INDEX_REQUIRE_PLATFORM_VALIDATION,
-                        ENCODED_INDEX_IKE_TUN_CONN_PARAMS,
-                        ENCODED_INDEX_AUTOMATIC_NATT_KEEPALIVE_TIMER_ENABLED,
-                        ENCODED_INDEX_AUTOMATIC_IP_VERSION_SELECTION_ENABLED
-                        /* missingIndices */);
-
-        assertNull(VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes()));
-    }
-
-    private String getEncodedDecodedIkev2ProfileWithtooFewValues() {
-        return getEncodedDecodedIkev2ProfileMissingValues(
-                ENCODED_INDEX_RESTRICTED_TO_TEST_NETWORKS,
-                ENCODED_INDEX_EXCLUDE_LOCAL_ROUTE,
-                ENCODED_INDEX_REQUIRE_PLATFORM_VALIDATION,
-                ENCODED_INDEX_IKE_TUN_CONN_PARAMS,
-                ENCODED_INDEX_AUTOMATIC_NATT_KEEPALIVE_TIMER_ENABLED,
-                ENCODED_INDEX_AUTOMATIC_IP_VERSION_SELECTION_ENABLED /* missingIndices */);
-    }
-
-    @Test
-    public void testEncodeDecodeMissingIsRestrictedToTestNetworks() {
-        final String tooFewValues = getEncodedDecodedIkev2ProfileWithtooFewValues();
-
-        // Verify decoding without isRestrictedToTestNetworks defaults to false
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes());
-        assertFalse(decoded.isRestrictedToTestNetworks);
-    }
-
-    @Test
-    public void testEncodeDecodeMissingExcludeLocalRoutes() {
-        final String tooFewValues = getEncodedDecodedIkev2ProfileWithtooFewValues();
-
-        // Verify decoding without excludeLocalRoutes defaults to false
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes());
-        assertFalse(decoded.excludeLocalRoutes);
-    }
-
-    @Test
-    public void testEncodeDecodeMissingRequiresValidation() {
-        final String tooFewValues = getEncodedDecodedIkev2ProfileWithtooFewValues();
-
-        // Verify decoding without requiresValidation defaults to false
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes());
-        assertFalse(decoded.requiresInternetValidation);
-    }
-
-    @Test
-    public void testEncodeDecodeMissingAutomaticNattKeepaliveTimerEnabled() {
-        final String tooFewValues = getEncodedDecodedIkev2ProfileWithtooFewValues();
-
-        // Verify decoding without automaticNattKeepaliveTimerEnabled defaults to false
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes());
-        assertFalse(decoded.automaticNattKeepaliveTimerEnabled);
-    }
-
-    @Test
-    public void testEncodeDecodeMissingAutomaticIpVersionSelectionEnabled() {
-        final String tooFewValues = getEncodedDecodedIkev2ProfileWithtooFewValues();
-
-        // Verify decoding without automaticIpVersionSelectionEnabled defaults to false
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, tooFewValues.getBytes());
-        assertFalse(decoded.automaticIpVersionSelectionEnabled);
-    }
-
-    @Test
-    public void testEncodeDecodeLoginsNotSaved() {
-        final VpnProfile profile = getSampleIkev2Profile(DUMMY_PROFILE_KEY);
-        profile.saveLogin = false;
-
-        final VpnProfile decoded = VpnProfile.decode(DUMMY_PROFILE_KEY, profile.encode());
-        assertNotEquals(profile, decoded);
-
-        // Add the username/password back, everything else must be equal.
-        decoded.username = profile.username;
-        decoded.password = profile.password;
-        assertEquals(profile, decoded);
-    }
-
-    @Test
-    public void testClone() {
-        final VpnProfile profile = getSampleIkev2Profile(DUMMY_PROFILE_KEY);
-        final VpnProfile clone = profile.clone();
-        assertEquals(profile, clone);
-        assertNotSame(profile, clone);
-    }
-}
diff --git a/tests/unit/java/com/android/metrics/ConnectivitySampleMetricsTest.kt b/tests/unit/java/com/android/metrics/ConnectivitySampleMetricsTest.kt
index 53baee1..8a9286f 100644
--- a/tests/unit/java/com/android/metrics/ConnectivitySampleMetricsTest.kt
+++ b/tests/unit/java/com/android/metrics/ConnectivitySampleMetricsTest.kt
@@ -1,5 +1,6 @@
 package com.android.metrics
 
+import android.net.ConnectivityThread
 import android.net.NetworkCapabilities
 import android.net.NetworkCapabilities.CONNECTIVITY_MANAGED_CAPABILITIES
 import android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL
@@ -15,13 +16,20 @@
 import android.net.NetworkCapabilities.NET_ENTERPRISE_ID_3
 import android.net.NetworkCapabilities.TRANSPORT_CELLULAR
 import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkRequest
 import android.net.NetworkScore
 import android.net.NetworkScore.KEEP_CONNECTED_FOR_TEST
 import android.net.NetworkScore.POLICY_EXITING
 import android.net.NetworkScore.POLICY_TRANSPORT_PRIMARY
 import android.os.Build
 import android.os.Handler
+import android.os.Process
+import android.os.Process.SYSTEM_UID
 import android.stats.connectivity.MeteredState
+import android.stats.connectivity.RequestType
+import android.stats.connectivity.RequestType.RT_APP
+import android.stats.connectivity.RequestType.RT_SYSTEM
+import android.stats.connectivity.RequestType.RT_SYSTEM_ON_BEHALF_OF_APP
 import android.stats.connectivity.ValidatedState
 import androidx.test.filters.SmallTest
 import com.android.net.module.util.BitUtils
@@ -31,11 +39,13 @@
 import com.android.server.connectivity.FullScore.POLICY_IS_UNMETERED
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
-import org.junit.Test
-import org.junit.runner.RunWith
+import com.android.testutils.TestableNetworkCallback
 import java.util.concurrent.CompletableFuture
 import kotlin.test.assertEquals
 import kotlin.test.fail
+import org.junit.Assert.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
 
 private fun <T> Handler.onHandler(f: () -> T): T {
     val future = CompletableFuture<T>()
@@ -80,7 +90,7 @@
 @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
 class ConnectivitySampleMetricsTest : CSTest() {
     @Test
-    fun testSampleConnectivityState() {
+    fun testSampleConnectivityState_Network() {
         val wifi1Caps = NetworkCapabilities.Builder()
                 .addTransportType(TRANSPORT_WIFI)
                 .addCapability(NET_CAPABILITY_NOT_METERED)
@@ -179,4 +189,61 @@
                         "expected ${expectedWifi2Policies.toPolicyString()}, " +
                         "found ${foundWifi2.scorePolicies.toPolicyString()}")
     }
+
+    private fun fileNetworkRequest(requestType: RequestType, requestCount: Int, uid: Int? = null) {
+        if (uid != null) {
+            deps.setCallingUid(uid)
+        }
+        try {
+            repeat(requestCount) {
+                when (requestType) {
+                    RT_APP, RT_SYSTEM -> cm.requestNetwork(
+                            NetworkRequest.Builder().build(),
+                            TestableNetworkCallback()
+                    )
+
+                    RT_SYSTEM_ON_BEHALF_OF_APP -> cm.registerDefaultNetworkCallbackForUid(
+                            Process.myUid(),
+                            TestableNetworkCallback(),
+                            Handler(ConnectivityThread.getInstanceLooper()))
+
+                    else -> fail("invalid requestType: " + requestType)
+                }
+            }
+        } finally {
+            deps.unmockCallingUid()
+        }
+    }
+
+
+    @Test
+    fun testSampleConnectivityState_NetworkRequest() {
+        val requestCount = 5
+        fileNetworkRequest(RT_APP, requestCount);
+        fileNetworkRequest(RT_SYSTEM, requestCount, SYSTEM_UID);
+        fileNetworkRequest(RT_SYSTEM_ON_BEHALF_OF_APP, requestCount, SYSTEM_UID);
+
+        val stats = csHandler.onHandler { service.sampleConnectivityState() }
+
+        assertEquals(3, stats.networkRequestCount.requestCountForTypeList.size)
+        val appRequest = stats.networkRequestCount.requestCountForTypeList.find {
+            it.requestType == RT_APP
+        } ?: fail("Can't find RT_APP request")
+        val systemRequest = stats.networkRequestCount.requestCountForTypeList.find {
+            it.requestType == RT_SYSTEM
+        } ?: fail("Can't find RT_SYSTEM request")
+        val systemOnBehalfOfAppRequest = stats.networkRequestCount.requestCountForTypeList.find {
+            it.requestType == RT_SYSTEM_ON_BEHALF_OF_APP
+        } ?: fail("Can't find RT_SYSTEM_ON_BEHALF_OF_APP request")
+
+        // Verify request count is equal or larger than the number of request this test filed
+        // since ConnectivityService internally files network requests
+        assertTrue("Unexpected RT_APP count, expected >= $requestCount, " +
+                "found ${appRequest.requestCount}", appRequest.requestCount >= requestCount)
+        assertTrue("Unexpected RT_SYSTEM count, expected >= $requestCount, " +
+                "found ${systemRequest.requestCount}", systemRequest.requestCount >= requestCount)
+        assertTrue("Unexpected RT_SYSTEM_ON_BEHALF_OF_APP count, expected >= $requestCount, " +
+                "found ${systemOnBehalfOfAppRequest.requestCount}",
+                systemOnBehalfOfAppRequest.requestCount >= requestCount)
+    }
 }
diff --git a/tests/unit/java/com/android/metrics/NetworkNsdReportedMetricsTest.kt b/tests/unit/java/com/android/metrics/NetworkNsdReportedMetricsTest.kt
index 3f6e88d..10ba6a4 100644
--- a/tests/unit/java/com/android/metrics/NetworkNsdReportedMetricsTest.kt
+++ b/tests/unit/java/com/android/metrics/NetworkNsdReportedMetricsTest.kt
@@ -163,7 +163,8 @@
         val sentQueryCount = 150
         val metrics = NetworkNsdReportedMetrics(clientId, deps)
         metrics.reportServiceDiscoveryStop(true /* isLegacy */, transactionId, durationMs,
-                foundCallbackCount, lostCallbackCount, servicesCount, sentQueryCount)
+                foundCallbackCount, lostCallbackCount, servicesCount, sentQueryCount,
+                true /* isServiceFromCache */)
 
         val eventCaptor = ArgumentCaptor.forClass(NetworkNsdReported::class.java)
         verify(deps).statsWrite(eventCaptor.capture())
@@ -179,6 +180,7 @@
             assertEquals(servicesCount, it.foundServiceCount)
             assertEquals(durationMs, it.eventDurationMillisec)
             assertEquals(sentQueryCount, it.sentQueryCount)
+            assertTrue(it.isKnownService)
         }
     }
 
@@ -231,8 +233,10 @@
         val clientId = 99
         val transactionId = 100
         val durationMs = 10L
+        val sentQueryCount = 10
         val metrics = NetworkNsdReportedMetrics(clientId, deps)
-        metrics.reportServiceResolutionStop(true /* isLegacy */, transactionId, durationMs)
+        metrics.reportServiceResolutionStop(
+                true /* isLegacy */, transactionId, durationMs, sentQueryCount)
 
         val eventCaptor = ArgumentCaptor.forClass(NetworkNsdReported::class.java)
         verify(deps).statsWrite(eventCaptor.capture())
@@ -243,6 +247,7 @@
             assertEquals(NsdEventType.NET_RESOLVE, it.type)
             assertEquals(MdnsQueryResult.MQR_SERVICE_RESOLUTION_STOP, it.queryResult)
             assertEquals(durationMs, it.eventDurationMillisec)
+            assertEquals(sentQueryCount, it.sentQueryCount)
         }
     }
 
diff --git a/tests/unit/java/com/android/server/BpfLoaderRcUtilsTest.kt b/tests/unit/java/com/android/server/BpfLoaderRcUtilsTest.kt
deleted file mode 100644
index 2cf6b17..0000000
--- a/tests/unit/java/com/android/server/BpfLoaderRcUtilsTest.kt
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server
-
-import android.os.Build
-import androidx.test.filters.SmallTest
-import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
-import com.android.testutils.DevSdkIgnoreRunner
-import kotlin.test.assertEquals
-import kotlin.test.assertTrue
-import org.junit.Test
-import org.junit.runner.RunWith
-
-@RunWith(DevSdkIgnoreRunner::class)
-@SmallTest
-@IgnoreUpTo(Build.VERSION_CODES.S)
-class BpfLoaderRcUtilsTest {
-    @Test
-    fun testLoadExistingBpfRcFile() {
-
-        val inputString = """
-            service a
-            # test comment
-            service bpfloader /system/bin/bpfloader
-                capabilities CHOWN SYS_ADMIN NET_ADMIN
-                group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system
-                user root
-                rlimit memlock 1073741824 1073741824
-                oneshot
-                # comment 漢字
-                reboot_on_failure reboot,bpfloader-failed
-                updatable
-            
-            #test comment
-            on b 
-              oneshot 
-              # test comment
-        """.trimIndent()
-        val expectedResult = listOf(
-            "service bpfloader /system/bin/bpfloader",
-            "capabilities CHOWN SYS_ADMIN NET_ADMIN",
-            "group root graphics network_stack net_admin net_bw_acct net_bw_stats net_raw system",
-            "user root",
-            "rlimit memlock 1073741824 1073741824",
-            "oneshot",
-            "reboot_on_failure reboot,bpfloader-failed",
-            "updatable"
-        )
-
-        assertEquals(expectedResult,
-                BpfLoaderRcUtils.loadExistingBpfRcFile(inputString.byteInputStream()))
-    }
-
-    @Test
-    fun testCheckBpfRcFile() {
-        assertTrue(BpfLoaderRcUtils.checkBpfLoaderRc())
-    }
-}
diff --git a/tests/unit/java/com/android/server/BpfNetMapsTest.java b/tests/unit/java/com/android/server/BpfNetMapsTest.java
index ea905d5..859c54a 100644
--- a/tests/unit/java/com/android/server/BpfNetMapsTest.java
+++ b/tests/unit/java/com/android/server/BpfNetMapsTest.java
@@ -17,6 +17,7 @@
 package com.android.server;
 
 import static android.net.BpfNetMapsConstants.ALLOW_CHAINS;
+import static android.net.BpfNetMapsConstants.BACKGROUND_MATCH;
 import static android.net.BpfNetMapsConstants.CURRENT_STATS_MAP_CONFIGURATION_KEY;
 import static android.net.BpfNetMapsConstants.DATA_SAVER_ENABLED_KEY;
 import static android.net.BpfNetMapsConstants.DATA_SAVER_DISABLED;
@@ -31,13 +32,25 @@
 import static android.net.BpfNetMapsConstants.OEM_DENY_1_MATCH;
 import static android.net.BpfNetMapsConstants.OEM_DENY_2_MATCH;
 import static android.net.BpfNetMapsConstants.OEM_DENY_3_MATCH;
-import static android.net.BpfNetMapsConstants.PENALTY_BOX_MATCH;
+import static android.net.BpfNetMapsConstants.PENALTY_BOX_ADMIN_MATCH;
+import static android.net.BpfNetMapsConstants.PENALTY_BOX_USER_MATCH;
 import static android.net.BpfNetMapsConstants.POWERSAVE_MATCH;
 import static android.net.BpfNetMapsConstants.RESTRICTED_MATCH;
 import static android.net.BpfNetMapsConstants.STANDBY_MATCH;
 import static android.net.BpfNetMapsConstants.UID_RULES_CONFIGURATION_KEY;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_ADMIN_DISABLED;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_DATA_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_USER_RESTRICTED;
+import static android.net.ConnectivityManager.BLOCKED_REASON_APP_STANDBY;
+import static android.net.ConnectivityManager.BLOCKED_REASON_BATTERY_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_REASON_DOZE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
+import static android.net.ConnectivityManager.BLOCKED_REASON_OEM_DENY;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3;
@@ -74,7 +87,9 @@
 import android.net.InetAddresses;
 import android.net.UidOwnerValue;
 import android.os.Build;
+import android.os.Process;
 import android.os.ServiceSpecificException;
+import android.os.UserHandle;
 import android.system.ErrnoException;
 import android.util.ArraySet;
 import android.util.IndentingPrintWriter;
@@ -334,146 +349,6 @@
         }
     }
 
-    private void doTestRemoveNaughtyApp(final int iif, final long match) throws Exception {
-        mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(iif, match));
-
-        mBpfNetMaps.removeNaughtyApp(TEST_UID);
-
-        checkUidOwnerValue(TEST_UID, iif, match & ~PENALTY_BOX_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testRemoveNaughtyApp() throws Exception {
-        doTestRemoveNaughtyApp(NO_IIF, PENALTY_BOX_MATCH);
-
-        // PENALTY_BOX_MATCH with other matches
-        doTestRemoveNaughtyApp(NO_IIF, PENALTY_BOX_MATCH | DOZABLE_MATCH | POWERSAVE_MATCH);
-
-        // PENALTY_BOX_MATCH with IIF_MATCH
-        doTestRemoveNaughtyApp(TEST_IF_INDEX, PENALTY_BOX_MATCH | IIF_MATCH);
-
-        // PENALTY_BOX_MATCH is not enabled
-        doTestRemoveNaughtyApp(NO_IIF, DOZABLE_MATCH | POWERSAVE_MATCH | RESTRICTED_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testRemoveNaughtyAppMissingUid() {
-        // UidOwnerMap does not have entry for TEST_UID
-        assertThrows(ServiceSpecificException.class,
-                () -> mBpfNetMaps.removeNaughtyApp(TEST_UID));
-    }
-
-    @Test
-    @IgnoreAfter(Build.VERSION_CODES.S_V2)
-    public void testRemoveNaughtyAppBeforeT() {
-        assertThrows(UnsupportedOperationException.class,
-                () -> mBpfNetMaps.removeNaughtyApp(TEST_UID));
-    }
-
-    private void doTestAddNaughtyApp(final int iif, final long match) throws Exception {
-        if (match != NO_MATCH) {
-            mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(iif, match));
-        }
-
-        mBpfNetMaps.addNaughtyApp(TEST_UID);
-
-        checkUidOwnerValue(TEST_UID, iif, match | PENALTY_BOX_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testAddNaughtyApp() throws Exception {
-        doTestAddNaughtyApp(NO_IIF, NO_MATCH);
-
-        // Other matches are enabled
-        doTestAddNaughtyApp(NO_IIF, DOZABLE_MATCH | POWERSAVE_MATCH | RESTRICTED_MATCH);
-
-        // IIF_MATCH is enabled
-        doTestAddNaughtyApp(TEST_IF_INDEX, IIF_MATCH);
-
-        // PENALTY_BOX_MATCH is already enabled
-        doTestAddNaughtyApp(NO_IIF, PENALTY_BOX_MATCH | DOZABLE_MATCH);
-    }
-
-    @Test
-    @IgnoreAfter(Build.VERSION_CODES.S_V2)
-    public void testAddNaughtyAppBeforeT() {
-        assertThrows(UnsupportedOperationException.class,
-                () -> mBpfNetMaps.addNaughtyApp(TEST_UID));
-    }
-
-    private void doTestRemoveNiceApp(final int iif, final long match) throws Exception {
-        mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(iif, match));
-
-        mBpfNetMaps.removeNiceApp(TEST_UID);
-
-        checkUidOwnerValue(TEST_UID, iif, match & ~HAPPY_BOX_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testRemoveNiceApp() throws Exception {
-        doTestRemoveNiceApp(NO_IIF, HAPPY_BOX_MATCH);
-
-        // HAPPY_BOX_MATCH with other matches
-        doTestRemoveNiceApp(NO_IIF, HAPPY_BOX_MATCH | DOZABLE_MATCH | POWERSAVE_MATCH);
-
-        // HAPPY_BOX_MATCH with IIF_MATCH
-        doTestRemoveNiceApp(TEST_IF_INDEX, HAPPY_BOX_MATCH | IIF_MATCH);
-
-        // HAPPY_BOX_MATCH is not enabled
-        doTestRemoveNiceApp(NO_IIF, DOZABLE_MATCH | POWERSAVE_MATCH | RESTRICTED_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testRemoveNiceAppMissingUid() {
-        // UidOwnerMap does not have entry for TEST_UID
-        assertThrows(ServiceSpecificException.class,
-                () -> mBpfNetMaps.removeNiceApp(TEST_UID));
-    }
-
-    @Test
-    @IgnoreAfter(Build.VERSION_CODES.S_V2)
-    public void testRemoveNiceAppBeforeT() {
-        assertThrows(UnsupportedOperationException.class,
-                () -> mBpfNetMaps.removeNiceApp(TEST_UID));
-    }
-
-    private void doTestAddNiceApp(final int iif, final long match) throws Exception {
-        if (match != NO_MATCH) {
-            mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(iif, match));
-        }
-
-        mBpfNetMaps.addNiceApp(TEST_UID);
-
-        checkUidOwnerValue(TEST_UID, iif, match | HAPPY_BOX_MATCH);
-    }
-
-    @Test
-    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
-    public void testAddNiceApp() throws Exception {
-        doTestAddNiceApp(NO_IIF, NO_MATCH);
-
-        // Other matches are enabled
-        doTestAddNiceApp(NO_IIF, DOZABLE_MATCH | POWERSAVE_MATCH | RESTRICTED_MATCH);
-
-        // IIF_MATCH is enabled
-        doTestAddNiceApp(TEST_IF_INDEX, IIF_MATCH);
-
-        // HAPPY_BOX_MATCH is already enabled
-        doTestAddNiceApp(NO_IIF, HAPPY_BOX_MATCH | DOZABLE_MATCH);
-    }
-
-    @Test
-    @IgnoreAfter(Build.VERSION_CODES.S_V2)
-    public void testAddNiceAppBeforeT() {
-        assertThrows(UnsupportedOperationException.class,
-                () -> mBpfNetMaps.addNiceApp(TEST_UID));
-    }
-
     private void doTestUpdateUidLockdownRule(final int iif, final long match, final boolean add)
             throws Exception {
         if (match != NO_MATCH) {
@@ -658,6 +533,9 @@
         doTestSetUidRule(FIREWALL_CHAIN_OEM_DENY_1);
         doTestSetUidRule(FIREWALL_CHAIN_OEM_DENY_2);
         doTestSetUidRule(FIREWALL_CHAIN_OEM_DENY_3);
+        doTestSetUidRule(FIREWALL_CHAIN_METERED_ALLOW);
+        doTestSetUidRule(FIREWALL_CHAIN_METERED_DENY_USER);
+        doTestSetUidRule(FIREWALL_CHAIN_METERED_DENY_ADMIN);
     }
 
     @Test
@@ -972,6 +850,21 @@
     }
 
     @Test
+    @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+    public void testGetNetPermFoUid() throws Exception {
+        mUidPermissionMap.deleteEntry(new S32(TEST_UID));
+        assertEquals(PERMISSION_INTERNET, mBpfNetMaps.getNetPermForUid(TEST_UID));
+
+        mUidPermissionMap.updateEntry(new S32(TEST_UID), new U8((short) PERMISSION_NONE));
+        assertEquals(PERMISSION_NONE, mBpfNetMaps.getNetPermForUid(TEST_UID));
+
+        mUidPermissionMap.updateEntry(new S32(TEST_UID),
+                new U8((short) (PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS)));
+        assertEquals(PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS,
+                mBpfNetMaps.getNetPermForUid(TEST_UID));
+    }
+
+    @Test
     @IgnoreUpTo(Build.VERSION_CODES.S_V2)
     public void testSwapActiveStatsMap() throws Exception {
         mConfigurationMap.updateEntry(
@@ -1079,7 +972,7 @@
     @IgnoreUpTo(Build.VERSION_CODES.S_V2)
     public void testDumpUidOwnerMap() throws Exception {
         doTestDumpUidOwnerMap(HAPPY_BOX_MATCH, "HAPPY_BOX_MATCH");
-        doTestDumpUidOwnerMap(PENALTY_BOX_MATCH, "PENALTY_BOX_MATCH");
+        doTestDumpUidOwnerMap(PENALTY_BOX_USER_MATCH, "PENALTY_BOX_USER_MATCH");
         doTestDumpUidOwnerMap(DOZABLE_MATCH, "DOZABLE_MATCH");
         doTestDumpUidOwnerMap(STANDBY_MATCH, "STANDBY_MATCH");
         doTestDumpUidOwnerMap(POWERSAVE_MATCH, "POWERSAVE_MATCH");
@@ -1089,6 +982,7 @@
         doTestDumpUidOwnerMap(OEM_DENY_1_MATCH, "OEM_DENY_1_MATCH");
         doTestDumpUidOwnerMap(OEM_DENY_2_MATCH, "OEM_DENY_2_MATCH");
         doTestDumpUidOwnerMap(OEM_DENY_3_MATCH, "OEM_DENY_3_MATCH");
+        doTestDumpUidOwnerMap(PENALTY_BOX_ADMIN_MATCH, "PENALTY_BOX_ADMIN_MATCH");
 
         doTestDumpUidOwnerMap(HAPPY_BOX_MATCH | POWERSAVE_MATCH,
                 "HAPPY_BOX_MATCH POWERSAVE_MATCH");
@@ -1137,7 +1031,6 @@
     @IgnoreUpTo(Build.VERSION_CODES.S_V2)
     public void testDumpUidOwnerMapConfig() throws Exception {
         doTestDumpOwnerMatchConfig(HAPPY_BOX_MATCH, "HAPPY_BOX_MATCH");
-        doTestDumpOwnerMatchConfig(PENALTY_BOX_MATCH, "PENALTY_BOX_MATCH");
         doTestDumpOwnerMatchConfig(DOZABLE_MATCH, "DOZABLE_MATCH");
         doTestDumpOwnerMatchConfig(STANDBY_MATCH, "STANDBY_MATCH");
         doTestDumpOwnerMatchConfig(POWERSAVE_MATCH, "POWERSAVE_MATCH");
@@ -1283,4 +1176,164 @@
         assertDumpContains(dump, TEST_V6_ADDRESS.getHostAddress());
         assertDumpContains(dump, TEST_IF_INDEX + "(" + TEST_IF_NAME + ")");
     }
+
+    private void doTestGetUidNetworkingBlockedReasons(
+            final long configurationMatches,
+            final long uidRules,
+            final short dataSaverStatus,
+            final int expectedBlockedReasons
+    ) throws Exception {
+        mConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, new U32(configurationMatches));
+        mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(NULL_IIF, uidRules));
+        mDataSaverEnabledMap.updateEntry(DATA_SAVER_ENABLED_KEY, new U8(dataSaverStatus));
+
+        assertEquals(expectedBlockedReasons, mBpfNetMaps.getUidNetworkingBlockedReasons(TEST_UID));
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
+    public void testGetUidNetworkingBlockedReasons() throws Exception {
+        doTestGetUidNetworkingBlockedReasons(
+                NO_MATCH,
+                NO_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_REASON_NONE
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                DOZABLE_MATCH,
+                NO_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_REASON_DOZE
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                DOZABLE_MATCH | POWERSAVE_MATCH | STANDBY_MATCH,
+                DOZABLE_MATCH | STANDBY_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_REASON_BATTERY_SAVER | BLOCKED_REASON_APP_STANDBY
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                OEM_DENY_1_MATCH | OEM_DENY_2_MATCH | OEM_DENY_3_MATCH,
+                OEM_DENY_1_MATCH | OEM_DENY_3_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_REASON_OEM_DENY
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                DOZABLE_MATCH,
+                DOZABLE_MATCH | BACKGROUND_MATCH | STANDBY_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_REASON_NONE
+        );
+
+        // Note that HAPPY_BOX and PENALTY_BOX are not disabled by configuration map
+        doTestGetUidNetworkingBlockedReasons(
+                NO_MATCH,
+                PENALTY_BOX_USER_MATCH,
+                DATA_SAVER_DISABLED,
+                BLOCKED_METERED_REASON_USER_RESTRICTED
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                NO_MATCH,
+                PENALTY_BOX_ADMIN_MATCH,
+                DATA_SAVER_ENABLED,
+                BLOCKED_METERED_REASON_ADMIN_DISABLED | BLOCKED_METERED_REASON_DATA_SAVER
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                NO_MATCH,
+                PENALTY_BOX_USER_MATCH | PENALTY_BOX_ADMIN_MATCH | HAPPY_BOX_MATCH,
+                DATA_SAVER_ENABLED,
+                BLOCKED_METERED_REASON_USER_RESTRICTED | BLOCKED_METERED_REASON_ADMIN_DISABLED
+        );
+        doTestGetUidNetworkingBlockedReasons(
+                STANDBY_MATCH,
+                STANDBY_MATCH | PENALTY_BOX_USER_MATCH | HAPPY_BOX_MATCH,
+                DATA_SAVER_ENABLED,
+                BLOCKED_REASON_APP_STANDBY | BLOCKED_METERED_REASON_USER_RESTRICTED
+        );
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
+    public void testIsUidNetworkingBlockedForCoreUids() throws Exception {
+        final long allowlistMatch = BACKGROUND_MATCH;    // Enable any allowlist match.
+        mConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, new U32(allowlistMatch));
+
+        // Verify that a normal uid that is not on this chain is indeed blocked.
+        assertTrue(BpfNetMapsUtils.isUidNetworkingBlocked(TEST_UID, false, mConfigurationMap,
+                mUidOwnerMap, mDataSaverEnabledMap));
+
+        final int[] coreAids = new int[] {
+                Process.ROOT_UID,
+                Process.SYSTEM_UID,
+                Process.FIRST_APPLICATION_UID - 10,
+                Process.FIRST_APPLICATION_UID - 1,
+        };
+        // Core appIds are not on the chain but should still be allowed on any user.
+        for (int userId = 0; userId < 20; userId++) {
+            for (final int aid : coreAids) {
+                final int uid = UserHandle.getUid(userId, aid);
+                assertFalse(BpfNetMapsUtils.isUidNetworkingBlocked(uid, false, mConfigurationMap,
+                        mUidOwnerMap, mDataSaverEnabledMap));
+            }
+        }
+    }
+
+    private void doTestIsUidRestrictedOnMeteredNetworks(
+            final long enabledMatches,
+            final long uidRules,
+            final short dataSaver,
+            final boolean expectedRestricted
+    ) throws Exception {
+        mConfigurationMap.updateEntry(UID_RULES_CONFIGURATION_KEY, new U32(enabledMatches));
+        mUidOwnerMap.updateEntry(new S32(TEST_UID), new UidOwnerValue(NULL_IIF, uidRules));
+        mDataSaverEnabledMap.updateEntry(DATA_SAVER_ENABLED_KEY, new U8(dataSaver));
+
+        assertEquals(expectedRestricted, mBpfNetMaps.isUidRestrictedOnMeteredNetworks(TEST_UID));
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
+    public void testIsUidRestrictedOnMeteredNetworks() throws Exception {
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                NO_MATCH,
+                DATA_SAVER_DISABLED,
+                false /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                DOZABLE_MATCH | POWERSAVE_MATCH | STANDBY_MATCH,
+                DOZABLE_MATCH | STANDBY_MATCH ,
+                DATA_SAVER_DISABLED,
+                false /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                PENALTY_BOX_USER_MATCH,
+                DATA_SAVER_DISABLED,
+                true /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                PENALTY_BOX_ADMIN_MATCH,
+                DATA_SAVER_DISABLED,
+                true /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                PENALTY_BOX_USER_MATCH | PENALTY_BOX_ADMIN_MATCH | HAPPY_BOX_MATCH,
+                DATA_SAVER_DISABLED,
+                true /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                NO_MATCH,
+                DATA_SAVER_ENABLED,
+                true /* expectRestricted */
+        );
+        doTestIsUidRestrictedOnMeteredNetworks(
+                NO_MATCH,
+                HAPPY_BOX_MATCH,
+                DATA_SAVER_ENABLED,
+                false /* expectRestricted */
+        );
+    }
 }
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index c534025..be7f2a3 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -53,6 +53,7 @@
 import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_MASK;
 import static android.net.ConnectivityManager.BLOCKED_METERED_REASON_USER_RESTRICTED;
 import static android.net.ConnectivityManager.BLOCKED_REASON_BATTERY_SAVER;
+import static android.net.ConnectivityManager.BLOCKED_REASON_DOZE;
 import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
 import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
 import static android.net.ConnectivityManager.EXTRA_DEVICE_TYPE;
@@ -63,6 +64,9 @@
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_LOW_POWER_STANDBY;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_ADMIN;
+import static android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_1;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_2;
 import static android.net.ConnectivityManager.FIREWALL_CHAIN_OEM_DENY_3;
@@ -84,6 +88,7 @@
 import static android.net.ConnectivitySettingsManager.PRIVATE_DNS_MODE_OFF;
 import static android.net.ConnectivitySettingsManager.PRIVATE_DNS_MODE_OPPORTUNISTIC;
 import static android.net.ConnectivitySettingsManager.PRIVATE_DNS_MODE_PROVIDER_HOSTNAME;
+import static android.net.INetd.PERMISSION_INTERNET;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_PROBE_DNS;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_PROBE_FALLBACK;
 import static android.net.INetworkMonitor.NETWORK_VALIDATION_PROBE_HTTP;
@@ -148,6 +153,7 @@
 import static android.net.OemNetworkPreferences.OEM_NETWORK_PREFERENCE_UNINITIALIZED;
 import static android.net.Proxy.PROXY_CHANGE_ACTION;
 import static android.net.RouteInfo.RTN_UNREACHABLE;
+import static android.net.connectivity.ConnectivityCompatChanges.NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.PREFIX_OPERATION_ADDED;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.PREFIX_OPERATION_REMOVED;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.VALIDATION_RESULT_FAILURE;
@@ -158,11 +164,9 @@
 import static android.telephony.DataConnectionRealTimeInfo.DC_POWER_STATE_LOW;
 
 import static com.android.server.ConnectivityService.ALLOW_SATALLITE_NETWORK_FALLBACK;
-import static com.android.server.ConnectivityService.DELAY_DESTROY_FROZEN_SOCKETS_VERSION;
 import static com.android.net.module.util.DeviceConfigUtils.TETHERING_MODULE_NAME;
 import static com.android.server.ConnectivityService.ALLOW_SYSUI_CONNECTIVITY_REPORTS;
 import static com.android.server.ConnectivityService.KEY_DESTROY_FROZEN_SOCKETS_VERSION;
-import static com.android.server.ConnectivityService.LOG_BPF_RC;
 import static com.android.server.ConnectivityService.MAX_NETWORK_REQUESTS_PER_SYSTEM_UID;
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_MOBILE_DATA_PREFERERRED;
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_OEM;
@@ -173,6 +177,9 @@
 import static com.android.server.ConnectivityServiceTestUtils.transportToLegacyType;
 import static com.android.server.NetworkAgentWrapper.CallbackType.OnQosCallbackRegister;
 import static com.android.server.NetworkAgentWrapper.CallbackType.OnQosCallbackUnregister;
+import static com.android.server.connectivity.ConnectivityFlags.BACKGROUND_FIREWALL_CHAIN;
+import static com.android.server.connectivity.ConnectivityFlags.DELAY_DESTROY_SOCKETS;
+import static com.android.server.connectivity.ConnectivityFlags.INGRESS_TO_VPN_ADDRESS_FILTERING;
 import static com.android.testutils.Cleanup.testAndCleanup;
 import static com.android.testutils.ConcurrentUtils.await;
 import static com.android.testutils.ConcurrentUtils.durationOf;
@@ -368,7 +375,6 @@
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
-import android.security.Credentials;
 import android.system.Os;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
@@ -389,10 +395,10 @@
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.app.IBatteryStats;
 import com.android.internal.net.VpnConfig;
-import com.android.internal.net.VpnProfile;
 import com.android.internal.util.WakeupMessage;
 import com.android.internal.util.test.BroadcastInterceptingContext;
 import com.android.internal.util.test.FakeSettingsProvider;
+import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.ArrayTrackRecord;
 import com.android.net.module.util.BaseNetdUnsolicitedEventListener;
 import com.android.net.module.util.CollectionUtils;
@@ -424,7 +430,6 @@
 import com.android.server.connectivity.SatelliteAccessController;
 import com.android.server.connectivity.TcpKeepaliveController;
 import com.android.server.connectivity.UidRangeUtils;
-import com.android.server.connectivity.VpnProfileStore;
 import com.android.server.net.NetworkPinner;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRunner;
@@ -458,13 +463,13 @@
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringWriter;
+import java.lang.reflect.Method;
 import java.net.DatagramSocket;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.net.Socket;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -631,7 +636,6 @@
     @Mock TelephonyManager mTelephonyManager;
     @Mock EthernetManager mEthernetManager;
     @Mock NetworkPolicyManager mNetworkPolicyManager;
-    @Mock VpnProfileStore mVpnProfileStore;
     @Mock SystemConfigManager mSystemConfigManager;
     @Mock DevicePolicyManager mDevicePolicyManager;
     @Mock Resources mResources;
@@ -802,8 +806,10 @@
             // This relies on all contexts for a given user returning the same UM mock
             final DevicePolicyManager dpmMock = createContextAsUser(userHandle, 0 /* flags */)
                     .getSystemService(DevicePolicyManager.class);
-            doReturn(value).when(dpmMock).getDeviceOwner();
-            doReturn(value).when(mDevicePolicyManager).getDeviceOwner();
+            ComponentName componentName = value == null
+                    ? null : new ComponentName(value, "deviceOwnerClass");
+            doReturn(componentName).when(dpmMock).getDeviceOwnerComponentOnAnyUser();
+            doReturn(componentName).when(mDevicePolicyManager).getDeviceOwnerComponentOnAnyUser();
         }
 
         @Override
@@ -1667,23 +1673,11 @@
             waitForIdle();
         }
 
-        public void startLegacyVpnPrivileged(VpnProfile profile) {
-            switch (profile.type) {
-                case VpnProfile.TYPE_IKEV2_IPSEC_RSA:
-                case VpnProfile.TYPE_IKEV2_IPSEC_USER_PASS:
-                case VpnProfile.TYPE_IKEV2_IPSEC_PSK:
-                case VpnProfile.TYPE_IKEV2_FROM_IKE_TUN_CONN_PARAMS:
-                    startPlatformVpn();
-                    break;
-                case VpnProfile.TYPE_L2TP_IPSEC_PSK:
-                case VpnProfile.TYPE_L2TP_IPSEC_RSA:
-                case VpnProfile.TYPE_IPSEC_XAUTH_PSK:
-                case VpnProfile.TYPE_IPSEC_XAUTH_RSA:
-                case VpnProfile.TYPE_IPSEC_HYBRID_RSA:
-                    startLegacyVpn();
-                    break;
-                default:
-                    fail("Unknown VPN profile type");
+        public void startLegacyVpnPrivileged(boolean isIkev2Vpn) {
+            if (isIkev2Vpn) {
+                startPlatformVpn();
+            } else {
+                startLegacyVpn();
             }
         }
 
@@ -1736,6 +1730,8 @@
     private void mockUidNetworkingBlocked() {
         doAnswer(i -> isUidBlocked(mBlockedReasons, i.getArgument(1))
         ).when(mNetworkPolicyManager).isUidNetworkingBlocked(anyInt(), anyBoolean());
+        doAnswer(i -> isUidBlocked(mBlockedReasons, i.getArgument(1))
+        ).when(mBpfNetMaps).isUidNetworkingBlocked(anyInt(), anyBoolean());
     }
 
     private boolean isUidBlocked(int blockedReasons, boolean meteredNetwork) {
@@ -1751,7 +1747,15 @@
 
     private void setBlockedReasonChanged(int blockedReasons) {
         mBlockedReasons = blockedReasons;
-        mPolicyCallback.onUidBlockedReasonChanged(Process.myUid(), blockedReasons);
+        if (mDeps.isAtLeastV()) {
+            visibleOnHandlerThread(mCsHandlerThread.getThreadHandler(),
+                    () -> mService.handleBlockedReasonsChanged(
+                            List.of(new Pair<>(Process.myUid(), blockedReasons))
+
+                    ));
+        } else {
+            mPolicyCallback.onUidBlockedReasonChanged(Process.myUid(), blockedReasons);
+        }
     }
 
     private Nat464Xlat getNat464Xlat(NetworkAgentWrapper mna) {
@@ -1932,11 +1936,16 @@
         mService.mLingerDelayMs = TEST_LINGER_DELAY_MS;
         mService.mNascentDelayMs = TEST_NASCENT_DELAY_MS;
 
-        final ArgumentCaptor<NetworkPolicyCallback> policyCallbackCaptor =
-                ArgumentCaptor.forClass(NetworkPolicyCallback.class);
-        verify(mNetworkPolicyManager).registerNetworkPolicyCallback(any(),
-                policyCallbackCaptor.capture());
-        mPolicyCallback = policyCallbackCaptor.getValue();
+        if (mDeps.isAtLeastV()) {
+            verify(mNetworkPolicyManager, never()).registerNetworkPolicyCallback(any(), any());
+            mPolicyCallback = null;
+        } else {
+            final ArgumentCaptor<NetworkPolicyCallback> policyCallbackCaptor =
+                    ArgumentCaptor.forClass(NetworkPolicyCallback.class);
+            verify(mNetworkPolicyManager).registerNetworkPolicyCallback(any(),
+                    policyCallbackCaptor.capture());
+            mPolicyCallback = policyCallbackCaptor.getValue();
+        }
 
         // Create local CM before sending system ready so that we can answer
         // getSystemService() correctly.
@@ -1952,6 +1961,10 @@
         setCaptivePortalMode(ConnectivitySettingsManager.CAPTIVE_PORTAL_MODE_PROMPT);
         setAlwaysOnNetworks(false);
         setPrivateDnsSettings(PRIVATE_DNS_MODE_OFF, "ignored.example.com");
+
+        mDeps.setChangeIdEnabled(
+                true, NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION, Process.myUid());
+        doReturn(PERMISSION_INTERNET).when(mBpfNetMaps).getNetPermForUid(anyInt());
         // Note : Please do not add any new instrumentation here. If you need new instrumentation,
         // please add it in CSTest and use subclasses of CSTest instead of adding more
         // tools in ConnectivityServiceTest.
@@ -2055,12 +2068,16 @@
             };
         }
 
+        private BiConsumer<Integer, Integer> mCarrierPrivilegesLostListener;
+
         @Override
         public CarrierPrivilegeAuthenticator makeCarrierPrivilegeAuthenticator(
                 @NonNull final Context context,
                 @NonNull final TelephonyManager tm,
                 final boolean requestRestrictedWifiEnabled,
-                BiConsumer<Integer, Integer> listener) {
+                BiConsumer<Integer, Integer> listener,
+                @NonNull final Handler handler) {
+            mCarrierPrivilegesLostListener = listener;
             return mDeps.isAtLeastT() ? mCarrierPrivilegeAuthenticator : null;
         }
 
@@ -2161,13 +2178,10 @@
             switch (name) {
                 case ConnectivityFlags.NO_REMATCH_ALL_REQUESTS_ON_REGISTER:
                 case ConnectivityFlags.CARRIER_SERVICE_CHANGED_USE_CALLBACK:
-                    return true;
                 case ConnectivityFlags.REQUEST_RESTRICTED_WIFI:
-                    return true;
+                case ConnectivityFlags.USE_DECLARED_METHODS_FOR_CALLBACKS:
                 case KEY_DESTROY_FROZEN_SOCKETS_VERSION:
                     return true;
-                case DELAY_DESTROY_FROZEN_SOCKETS_VERSION:
-                    return true;
                 default:
                     return super.isFeatureEnabled(context, name);
             }
@@ -2178,10 +2192,14 @@
             switch (name) {
                 case ALLOW_SYSUI_CONNECTIVITY_REPORTS:
                     return true;
-                case LOG_BPF_RC:
-                    return true;
                 case ALLOW_SATALLITE_NETWORK_FALLBACK:
                     return true;
+                case INGRESS_TO_VPN_ADDRESS_FILTERING:
+                    return true;
+                case BACKGROUND_FIREWALL_CHAIN:
+                    return true;
+                case DELAY_DESTROY_SOCKETS:
+                    return true;
                 default:
                     return super.isFeatureNotChickenedOut(context, name);
             }
@@ -2853,7 +2871,7 @@
         };
         final NetworkRequest request = mService.listenForNetwork(caps, messenger, binder,
                 NetworkCallback.FLAG_NONE, mContext.getOpPackageName(),
-                mContext.getAttributionTag());
+                mContext.getAttributionTag(), ~0 /* declaredMethodsFlag */);
         mService.releaseNetworkRequest(request);
         deathRecipient.get().binderDied();
         // Wait for the release message to be processed.
@@ -5389,7 +5407,7 @@
             mService.requestNetwork(Process.INVALID_UID, networkCapabilities,
                     NetworkRequest.Type.REQUEST.ordinal(), null, 0, null,
                     ConnectivityManager.TYPE_WIFI, NetworkCallback.FLAG_NONE,
-                    mContext.getPackageName(), getAttributionTag());
+                    mContext.getPackageName(), getAttributionTag(), ~0 /* declaredMethodsFlag */);
         });
 
         final NetworkRequest.Builder builder =
@@ -7522,13 +7540,13 @@
     @Test
     public void testNetworkCallbackMaximum() throws Exception {
         final int MAX_REQUESTS = 100;
-        final int CALLBACKS = 87;
+        final int CALLBACKS = 88;
         final int DIFF_INTENTS = 10;
         final int SAME_INTENTS = 10;
         final int SYSTEM_ONLY_MAX_REQUESTS = 250;
-        // Assert 1 (Default request filed before testing) + CALLBACKS + DIFF_INTENTS +
-        // 1 (same intent) = MAX_REQUESTS - 1, since the capacity is MAX_REQUEST - 1.
-        assertEquals(MAX_REQUESTS - 1, 1 + CALLBACKS + DIFF_INTENTS + 1);
+        // CALLBACKS + DIFF_INTENTS + 1 (same intent)
+        // = MAX_REQUESTS - 1, since the capacity is MAX_REQUEST - 1.
+        assertEquals(MAX_REQUESTS - 1, CALLBACKS + DIFF_INTENTS + 1);
 
         NetworkRequest networkRequest = new NetworkRequest.Builder().build();
         ArrayList<Object> registered = new ArrayList<>();
@@ -9862,6 +9880,28 @@
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertExtraInfoFromCmPresent(mCellAgent);
 
+        // Remove PERMISSION_INTERNET and disable NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION
+        doReturn(INetd.PERMISSION_NONE).when(mBpfNetMaps).getNetPermForUid(Process.myUid());
+        mDeps.setChangeIdEnabled(false,
+                NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION, Process.myUid());
+
+        setBlockedReasonChanged(BLOCKED_REASON_DOZE);
+        if (mDeps.isAtLeastV()) {
+            // On V+, network access from app that does not have INTERNET permission is considered
+            // not blocked if NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION is disabled.
+            // So blocked status does not change from BLOCKED_REASON_NONE
+            cellNetworkCallback.assertNoCallback();
+            detailedCallback.assertNoCallback();
+        } else {
+            // On U-, onBlockedStatusChanged callback is called with blocked reasons CS receives
+            // from NPMS callback regardless of permission app has.
+            // Note that this cannot actually happen because on U-, NPMS will never notify any
+            // blocked reasons for apps that don't have the INTERNET permission.
+            cellNetworkCallback.expect(BLOCKED_STATUS, mCellAgent, cb -> cb.getBlocked());
+            detailedCallback.expect(BLOCKED_STATUS_INT, mCellAgent,
+                    cb -> cb.getReason() == BLOCKED_REASON_DOZE);
+        }
+
         mCm.unregisterNetworkCallback(cellNetworkCallback);
     }
 
@@ -10213,24 +10253,6 @@
         doAsUid(Process.SYSTEM_UID, () -> mCm.unregisterNetworkCallback(perUidCb));
     }
 
-    private VpnProfile setupLockdownVpn(int profileType) {
-        final String profileName = "testVpnProfile";
-        final byte[] profileTag = profileName.getBytes(StandardCharsets.UTF_8);
-        doReturn(profileTag).when(mVpnProfileStore).get(Credentials.LOCKDOWN_VPN);
-
-        final VpnProfile profile = new VpnProfile(profileName);
-        profile.name = "My VPN";
-        profile.server = "192.0.2.1";
-        profile.dnsServers = "8.8.8.8";
-        profile.ipsecIdentifier = "My ipsecIdentifier";
-        profile.ipsecSecret = "My PSK";
-        profile.type = profileType;
-        final byte[] encodedProfile = profile.encode();
-        doReturn(encodedProfile).when(mVpnProfileStore).get(Credentials.VPN + profileName);
-
-        return profile;
-    }
-
     private void establishLegacyLockdownVpn(Network underlying) throws Exception {
         // The legacy lockdown VPN only supports userId 0, and must have an underlying network.
         assertNotNull(underlying);
@@ -10242,7 +10264,7 @@
         mMockVpn.connect(true);
     }
 
-    private void doTestLockdownVpn(VpnProfile profile, boolean expectSetVpnDefaultForUids)
+    private void doTestLockdownVpn(boolean isIkev2Vpn)
             throws Exception {
         mServiceContext.setPermission(
                 Manifest.permission.CONTROL_VPN, PERMISSION_GRANTED);
@@ -10280,8 +10302,8 @@
         b.expectBroadcast();
         // Simulate LockdownVpnTracker attempting to start the VPN since it received the
         // systemDefault callback.
-        mMockVpn.startLegacyVpnPrivileged(profile);
-        if (expectSetVpnDefaultForUids) {
+        mMockVpn.startLegacyVpnPrivileged(isIkev2Vpn);
+        if (isIkev2Vpn) {
             // setVpnDefaultForUids() releases the original network request and creates a VPN
             // request so LOST callback is received.
             defaultCallback.expect(LOST, mCellAgent);
@@ -10305,7 +10327,7 @@
         final NetworkCapabilities vpnNc = mCm.getNetworkCapabilities(mMockVpn.getNetwork());
         b2.expectBroadcast();
         b3.expectBroadcast();
-        if (expectSetVpnDefaultForUids) {
+        if (isIkev2Vpn) {
             // Due to the VPN default request, getActiveNetworkInfo() gets the VPN network as the
             // network satisfier which has TYPE_VPN.
             assertActiveNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
@@ -10351,14 +10373,15 @@
         // callback with different network.
         final ExpectedBroadcast b6 = expectConnectivityAction(TYPE_VPN, DetailedState.DISCONNECTED);
         mMockVpn.stopVpnRunnerPrivileged();
-        mMockVpn.startLegacyVpnPrivileged(profile);
+
+        mMockVpn.startLegacyVpnPrivileged(isIkev2Vpn);
         // VPN network is disconnected (to restart)
         callback.expect(LOST, mMockVpn);
         defaultCallback.expect(LOST, mMockVpn);
         // The network preference is cleared when VPN is disconnected so it receives callbacks for
         // the system-wide default.
         defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiAgent);
-        if (expectSetVpnDefaultForUids) {
+        if (isIkev2Vpn) {
             // setVpnDefaultForUids() releases the original network request and creates a VPN
             // request so LOST callback is received.
             defaultCallback.expect(LOST, mWiFiAgent);
@@ -10367,7 +10390,7 @@
         b6.expectBroadcast();
 
         // While the VPN is reconnecting on the new network, everything is blocked.
-        if (expectSetVpnDefaultForUids) {
+        if (isIkev2Vpn) {
             // Due to the VPN default request, getActiveNetworkInfo() gets the mNoServiceNetwork
             // as the network satisfier.
             assertNull(mCm.getActiveNetworkInfo());
@@ -10388,7 +10411,7 @@
         systemDefaultCallback.assertNoCallback();
         b7.expectBroadcast();
         b8.expectBroadcast();
-        if (expectSetVpnDefaultForUids) {
+        if (isIkev2Vpn) {
             // Due to the VPN default request, getActiveNetworkInfo() gets the VPN network as the
             // network satisfier which has TYPE_VPN.
             assertActiveNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
@@ -10414,7 +10437,7 @@
         defaultCallback.assertNoCallback();
         systemDefaultCallback.assertNoCallback();
 
-        if (expectSetVpnDefaultForUids) {
+        if (isIkev2Vpn) {
             // Due to the VPN default request, getActiveNetworkInfo() gets the VPN network as the
             // network satisfier which has TYPE_VPN.
             assertActiveNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
@@ -10455,14 +10478,12 @@
 
     @Test
     public void testLockdownVpn_LegacyVpnRunner() throws Exception {
-        final VpnProfile profile = setupLockdownVpn(VpnProfile.TYPE_IPSEC_XAUTH_PSK);
-        doTestLockdownVpn(profile, false /* expectSetVpnDefaultForUids */);
+        doTestLockdownVpn(false /* isIkev2Vpn */);
     }
 
     @Test
     public void testLockdownVpn_Ikev2VpnRunner() throws Exception {
-        final VpnProfile profile = setupLockdownVpn(VpnProfile.TYPE_IKEV2_IPSEC_PSK);
-        doTestLockdownVpn(profile, true /* expectSetVpnDefaultForUids */);
+        doTestLockdownVpn(true /* isIkev2Vpn */);
     }
 
     @Test @IgnoreUpTo(Build.VERSION_CODES.S_V2)
@@ -10518,24 +10539,33 @@
         doTestSetUidFirewallRule(FIREWALL_CHAIN_POWERSAVE, FIREWALL_RULE_DENY);
         doTestSetUidFirewallRule(FIREWALL_CHAIN_RESTRICTED, FIREWALL_RULE_DENY);
         doTestSetUidFirewallRule(FIREWALL_CHAIN_LOW_POWER_STANDBY, FIREWALL_RULE_DENY);
-        doTestSetUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, FIREWALL_RULE_DENY);
+        if (SdkLevel.isAtLeastV()) {
+            // FIREWALL_CHAIN_BACKGROUND is only available on V+.
+            doTestSetUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, FIREWALL_RULE_DENY);
+        }
         doTestSetUidFirewallRule(FIREWALL_CHAIN_OEM_DENY_1, FIREWALL_RULE_ALLOW);
         doTestSetUidFirewallRule(FIREWALL_CHAIN_OEM_DENY_2, FIREWALL_RULE_ALLOW);
         doTestSetUidFirewallRule(FIREWALL_CHAIN_OEM_DENY_3, FIREWALL_RULE_ALLOW);
+        doTestSetUidFirewallRule(FIREWALL_CHAIN_METERED_ALLOW, FIREWALL_RULE_DENY);
+        doTestSetUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_USER, FIREWALL_RULE_ALLOW);
+        doTestSetUidFirewallRule(FIREWALL_CHAIN_METERED_DENY_ADMIN, FIREWALL_RULE_ALLOW);
     }
 
     @Test @IgnoreUpTo(SC_V2)
     public void testSetFirewallChainEnabled() throws Exception {
-        final List<Integer> firewallChains = Arrays.asList(
+        final List<Integer> firewallChains = new ArrayList<>(Arrays.asList(
                 FIREWALL_CHAIN_DOZABLE,
                 FIREWALL_CHAIN_STANDBY,
                 FIREWALL_CHAIN_POWERSAVE,
                 FIREWALL_CHAIN_RESTRICTED,
                 FIREWALL_CHAIN_LOW_POWER_STANDBY,
-                FIREWALL_CHAIN_BACKGROUND,
                 FIREWALL_CHAIN_OEM_DENY_1,
                 FIREWALL_CHAIN_OEM_DENY_2,
-                FIREWALL_CHAIN_OEM_DENY_3);
+                FIREWALL_CHAIN_OEM_DENY_3));
+        if (SdkLevel.isAtLeastV()) {
+            // FIREWALL_CHAIN_BACKGROUND is only available on V+.
+            firewallChains.add(FIREWALL_CHAIN_BACKGROUND);
+        }
         for (final int chain: firewallChains) {
             mCm.setFirewallChainEnabled(chain, true /* enabled */);
             verify(mBpfNetMaps).setChildChain(chain, true /* enable */);
@@ -10582,7 +10612,10 @@
         doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_POWERSAVE, allowlist);
         doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_RESTRICTED, allowlist);
         doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_LOW_POWER_STANDBY, allowlist);
-        doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_BACKGROUND, allowlist);
+        if (SdkLevel.isAtLeastV()) {
+            // FIREWALL_CHAIN_BACKGROUND is only available on V+.
+            doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_BACKGROUND, allowlist);
+        }
 
         doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_STANDBY, denylist);
         doTestSetFirewallChainEnabledCloseSocket(FIREWALL_CHAIN_OEM_DENY_1, denylist);
@@ -10604,7 +10637,10 @@
         doTestReplaceFirewallChain(FIREWALL_CHAIN_POWERSAVE);
         doTestReplaceFirewallChain(FIREWALL_CHAIN_RESTRICTED);
         doTestReplaceFirewallChain(FIREWALL_CHAIN_LOW_POWER_STANDBY);
-        doTestReplaceFirewallChain(FIREWALL_CHAIN_BACKGROUND);
+        if (SdkLevel.isAtLeastV()) {
+            // FIREWALL_CHAIN_BACKGROUND is only available on V+.
+            doTestReplaceFirewallChain(FIREWALL_CHAIN_BACKGROUND);
+        }
         doTestReplaceFirewallChain(FIREWALL_CHAIN_OEM_DENY_1);
         doTestReplaceFirewallChain(FIREWALL_CHAIN_OEM_DENY_2);
         doTestReplaceFirewallChain(FIREWALL_CHAIN_OEM_DENY_3);
@@ -13619,7 +13655,8 @@
                     IllegalArgumentException.class,
                     () -> mService.requestNetwork(Process.INVALID_UID, nc, reqTypeInt, null, 0,
                             null, ConnectivityManager.TYPE_NONE, NetworkCallback.FLAG_NONE,
-                            mContext.getPackageName(), getAttributionTag())
+                            mContext.getPackageName(), getAttributionTag(),
+                            ~0 /* declaredMethodsFlag */)
             );
         }
     }
@@ -17341,21 +17378,7 @@
     }
 
     @Test
-    public void testSubIdsClearedWithoutNetworkFactoryPermission() throws Exception {
-        mServiceContext.setPermission(NETWORK_FACTORY, PERMISSION_DENIED);
-        final NetworkCapabilities nc = new NetworkCapabilities();
-        nc.setSubscriptionIds(Collections.singleton(Process.myUid()));
-
-        final NetworkCapabilities result =
-                mService.networkCapabilitiesRestrictedForCallerPermissions(
-                        nc, Process.myPid(), Process.myUid());
-        assertTrue(result.getSubscriptionIds().isEmpty());
-    }
-
-    @Test
-    public void testSubIdsExistWithNetworkFactoryPermission() throws Exception {
-        mServiceContext.setPermission(NETWORK_FACTORY, PERMISSION_GRANTED);
-
+    public void testSubIdsExist() throws Exception {
         final Set<Integer> subIds = Collections.singleton(Process.myUid());
         final NetworkCapabilities nc = new NetworkCapabilities();
         nc.setSubscriptionIds(subIds);
@@ -17381,8 +17404,7 @@
     }
 
     @Test
-    public void testNetworkRequestWithSubIdsWithNetworkFactoryPermission() throws Exception {
-        mServiceContext.setPermission(NETWORK_FACTORY, PERMISSION_GRANTED);
+    public void testNetworkRequestWithSubIds() throws Exception {
         final PendingIntent pendingIntent = PendingIntent.getBroadcast(
                 mContext, 0 /* requestCode */, new Intent("a"), FLAG_IMMUTABLE);
         final NetworkCallback networkCallback1 = new NetworkCallback();
@@ -17398,21 +17420,6 @@
     }
 
     @Test
-    public void testNetworkRequestWithSubIdsWithoutNetworkFactoryPermission() throws Exception {
-        mServiceContext.setPermission(NETWORK_FACTORY, PERMISSION_DENIED);
-        final PendingIntent pendingIntent = PendingIntent.getBroadcast(
-                mContext, 0 /* requestCode */, new Intent("a"), FLAG_IMMUTABLE);
-
-        final Class<SecurityException> expected = SecurityException.class;
-        assertThrows(
-                expected, () -> mCm.requestNetwork(getRequestWithSubIds(), new NetworkCallback()));
-        assertThrows(expected, () -> mCm.requestNetwork(getRequestWithSubIds(), pendingIntent));
-        assertThrows(
-                expected,
-                () -> mCm.registerNetworkCallback(getRequestWithSubIds(), new NetworkCallback()));
-    }
-
-    @Test
     @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
     public void testCarrierConfigAppSendNetworkRequestForRestrictedWifi() throws Exception {
         mServiceContext.setPermission(CONNECTIVITY_USE_RESTRICTED_NETWORKS, PERMISSION_DENIED);
@@ -17479,7 +17486,10 @@
                 .isCarrierServiceUidForNetworkCapabilities(eq(Process.myUid()), any());
         doReturn(TEST_SUBSCRIPTION_ID).when(mCarrierPrivilegeAuthenticator)
                 .getSubIdFromNetworkCapabilities(any());
-        mService.onCarrierPrivilegesLost(lostPrivilegeUid, lostPrivilegeSubId);
+
+        visibleOnHandlerThread(mCsHandlerThread.getThreadHandler(), () -> {
+            mDeps.mCarrierPrivilegesLostListener.accept(lostPrivilegeUid, lostPrivilegeSubId);
+        });
         waitForIdle();
 
         if (expectCapChanged) {
@@ -17493,11 +17503,12 @@
         }
 
         mWiFiAgent.disconnect();
-        waitForIdle();
 
         if (expectUnavailable) {
+            testFactory.expectRequestRemove();
             testFactory.assertRequestCountEquals(0);
         } else {
+            testFactory.expectRequestAdd();
             testFactory.assertRequestCountEquals(1);
         }
 
@@ -17547,6 +17558,47 @@
                 false /* expectUnavailable */,
                 true /* expectCapChanged */);
     }
+
+    @Test
+    public void testAllowedUidsExistWithoutNetworkFactoryPermission() throws Exception {
+        // Make sure NETWORK_FACTORY permission is not granted.
+        mServiceContext.setPermission(NETWORK_FACTORY, PERMISSION_DENIED);
+        mServiceContext.setPermission(MANAGE_TEST_NETWORKS, PERMISSION_GRANTED);
+        final TestNetworkCallback cb = new TestNetworkCallback();
+        mCm.requestNetwork(new NetworkRequest.Builder()
+                        .clearCapabilities()
+                        .addTransportType(TRANSPORT_TEST)
+                        .addTransportType(TRANSPORT_CELLULAR)
+                        .build(),
+                cb);
+
+        final ArraySet<Integer> uids = new ArraySet<>();
+        uids.add(200);
+        final NetworkCapabilities nc = new NetworkCapabilities.Builder()
+                .addTransportType(TRANSPORT_TEST)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                .setAllowedUids(uids)
+                .setOwnerUid(Process.myUid())
+                .setAdministratorUids(new int[] {Process.myUid()})
+                .build();
+        final TestNetworkAgentWrapper agent = new TestNetworkAgentWrapper(TRANSPORT_TEST,
+                new LinkProperties(), nc);
+        agent.connect(true);
+        cb.expectAvailableThenValidatedCallbacks(agent);
+
+        uids.add(300);
+        uids.add(400);
+        nc.setAllowedUids(uids);
+        agent.setNetworkCapabilities(nc, true /* sendToConnectivityService */);
+        if (mDeps.isAtLeastT()) {
+            // AllowedUids is not cleared even without the NETWORK_FACTORY permission
+            // because the caller is the owner of the network.
+            cb.expectCaps(agent, c -> c.getAllowedUids().equals(uids));
+        } else {
+            cb.assertNoCallback();
+        }
+    }
+
     @Test
     public void testAllowedUids() throws Exception {
         final int preferenceOrder =
@@ -19189,6 +19241,25 @@
         verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
     }
 
-    // Note : adding tests is ConnectivityServiceTest is deprecated, as it is too big for
+    private static final int EXPECTED_TEST_METHOD_COUNT = 332;
+
+    @Test
+    public void testTestMethodCount() {
+        final Class<?> testClass = this.getClass();
+
+        int actualTestMethodCount = 0;
+        for (final Method method : testClass.getDeclaredMethods()) {
+            if (method.isAnnotationPresent(Test.class)) {
+                actualTestMethodCount++;
+            }
+        }
+
+        assertEquals("Adding tests in ConnectivityServiceTest is deprecated, "
+                + "as it is too big for maintenance. Please consider adding new tests "
+                + "in subclasses of CSTest instead.",
+                EXPECTED_TEST_METHOD_COUNT, actualTestMethodCount);
+    }
+
+    // Note : adding tests in ConnectivityServiceTest is deprecated, as it is too big for
     // maintenance. Please consider adding new tests in subclasses of CSTest instead.
 }
diff --git a/tests/unit/java/com/android/server/NsdServiceTest.java b/tests/unit/java/com/android/server/NsdServiceTest.java
index 881de56..979e0a1 100644
--- a/tests/unit/java/com/android/server/NsdServiceTest.java
+++ b/tests/unit/java/com/android/server/NsdServiceTest.java
@@ -41,6 +41,7 @@
 import static com.android.server.NsdService.DEFAULT_RUNNING_APP_ACTIVE_IMPORTANCE_CUTOFF;
 import static com.android.server.NsdService.MdnsListener;
 import static com.android.server.NsdService.NO_TRANSACTION;
+import static com.android.server.NsdService.checkHostname;
 import static com.android.server.NsdService.parseTypeAndSubtype;
 import static com.android.testutils.ContextUtils.mockService;
 
@@ -53,6 +54,7 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertFalse;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.argThat;
@@ -521,6 +523,56 @@
     }
 
     @Test
+    @EnableCompatChanges(ENABLE_PLATFORM_MDNS_BACKEND)
+    public void testDiscoverOnTetheringDownstream_DiscoveryManager() throws Exception {
+        final NsdManager client = connectClient(mService);
+        final DiscoveryListener discListener = mock(DiscoveryListener.class);
+        client.discoverServices(SERVICE_TYPE, PROTOCOL, discListener);
+        waitForIdle();
+
+        final ArgumentCaptor<MdnsServiceBrowserListener> discoverListenerCaptor =
+                ArgumentCaptor.forClass(MdnsServiceBrowserListener.class);
+        final InOrder discManagerOrder = inOrder(mDiscoveryManager);
+        final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        discManagerOrder.verify(mDiscoveryManager).registerListener(eq(serviceTypeWithLocalDomain),
+                discoverListenerCaptor.capture(), any());
+
+        final int interfaceIdx = 123;
+        final MdnsServiceInfo mockServiceInfo = new MdnsServiceInfo(
+                SERVICE_NAME, /* serviceInstanceName */
+                serviceTypeWithLocalDomain.split("\\."), /* serviceType */
+                List.of(), /* subtypes */
+                new String[] {"android", "local"}, /* hostName */
+                12345, /* port */
+                List.of(IPV4_ADDRESS),
+                List.of(IPV6_ADDRESS),
+                List.of(), /* textStrings */
+                List.of(), /* textEntries */
+                interfaceIdx, /* interfaceIndex */
+                null /* network */,
+                Instant.MAX /* expirationTime */);
+
+        // Verify service is found with the interface index
+        discoverListenerCaptor.getValue().onServiceNameDiscovered(
+                mockServiceInfo, false /* isServiceFromCache */);
+        final ArgumentCaptor<NsdServiceInfo> foundInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        verify(discListener, timeout(TIMEOUT_MS)).onServiceFound(foundInfoCaptor.capture());
+        final NsdServiceInfo foundInfo = foundInfoCaptor.getValue();
+        assertNull(foundInfo.getNetwork());
+        assertEquals(interfaceIdx, foundInfo.getInterfaceIndex());
+
+        // Using the returned service info to resolve or register callback uses the interface index
+        client.resolveService(foundInfo, mock(ResolveListener.class));
+        client.registerServiceInfoCallback(foundInfo, Runnable::run,
+                mock(ServiceInfoCallback.class));
+        waitForIdle();
+
+        discManagerOrder.verify(mDiscoveryManager, times(2)).registerListener(any(), any(), argThat(
+                o -> o.getNetwork() == null && o.getInterfaceIndex() == interfaceIdx));
+    }
+
+    @Test
     @DisableCompatChanges(ENABLE_PLATFORM_MDNS_BACKEND)
     @DevSdkIgnoreRule.IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
     public void testDiscoverOnBlackholeNetwork() throws Exception {
@@ -854,7 +906,7 @@
                 request.getServiceName().equals(ns.getServiceName())
                         && request.getServiceType().equals(ns.getServiceType())));
         verify(mMetrics).reportServiceResolutionStop(
-                true /* isLegacy */, resolveId, 10L /* durationMs */);
+                true /* isLegacy */, resolveId, 10L /* durationMs */, 0 /* sentQueryCount */);
     }
 
     @Test
@@ -928,7 +980,7 @@
                 request.getServiceName().equals(ns.getServiceName())
                         && request.getServiceType().equals(ns.getServiceType())));
         verify(mMetrics).reportServiceResolutionStop(
-                true /* isLegacy */, getAddrId, 10L /* durationMs */);
+                true /* isLegacy */, getAddrId, 10L /* durationMs */,  0 /* sentQueryCount */);
     }
 
     private void verifyUpdatedServiceInfo(NsdServiceInfo info, String serviceName,
@@ -1144,7 +1196,7 @@
                 Instant.MAX /* expirationTime */);
 
         // Verify onServiceNameDiscovered callback
-        listener.onServiceNameDiscovered(foundInfo, false /* isServiceFromCache */);
+        listener.onServiceNameDiscovered(foundInfo, true /* isServiceFromCache */);
         verify(discListener, timeout(TIMEOUT_MS)).onServiceFound(argThat(info ->
                 info.getServiceName().equals(SERVICE_NAME)
                         // Service type in discovery callbacks has a dot at the end
@@ -1180,7 +1232,7 @@
         verify(mSocketProvider, timeout(CLEANUP_DELAY_MS + TIMEOUT_MS)).requestStopWhenInactive();
         verify(mMetrics).reportServiceDiscoveryStop(false /* isLegacy */, discId,
                 10L /* durationMs */, 1 /* foundCallbackCount */, 1 /* lostCallbackCount */,
-                1 /* servicesCount */, 3 /* sentQueryCount */);
+                1 /* servicesCount */, 3 /* sentQueryCount */, true /* isServiceFromCache */);
     }
 
     @Test
@@ -1629,20 +1681,23 @@
         // Subtypes are not used for resolution, only for discovery
         assertEquals(Collections.emptyList(), optionsCaptor.getValue().getSubtypes());
 
+        final MdnsListener listener = listenerCaptor.getValue();
+        // Callbacks for query sent.
+        listener.onDiscoveryQuerySent(Collections.emptyList(), 1 /* transactionId */);
+
         doReturn(TEST_TIME_MS + 10L).when(mClock).elapsedRealtime();
         client.stopServiceResolution(resolveListener);
         waitForIdle();
 
         // Verify the listener has been unregistered.
-        final MdnsListener listener = listenerCaptor.getValue();
         verify(mDiscoveryManager, timeout(TIMEOUT_MS))
                 .unregisterListener(eq(constructedServiceType), eq(listener));
         verify(resolveListener, timeout(TIMEOUT_MS)).onResolutionStopped(argThat(ns ->
                 request.getServiceName().equals(ns.getServiceName())
                         && request.getServiceType().equals(ns.getServiceType())));
         verify(mSocketProvider, timeout(CLEANUP_DELAY_MS + TIMEOUT_MS)).requestStopWhenInactive();
-        verify(mMetrics).reportServiceResolutionStop(
-                false /* isLegacy */, listener.mTransactionId, 10L /* durationMs */);
+        verify(mMetrics).reportServiceResolutionStop(false /* isLegacy */, listener.mTransactionId,
+                10L /* durationMs */, 1 /* sentQueryCount */);
     }
 
     @Test
@@ -1673,6 +1728,36 @@
     }
 
     @Test
+    public void TestCheckHostname() {
+        // Valid cases
+        assertTrue(checkHostname(null));
+        assertTrue(checkHostname("a"));
+        assertTrue(checkHostname("1"));
+        assertTrue(checkHostname("a-1234-bbbb-cccc000"));
+        assertTrue(checkHostname("A-1234-BBbb-CCCC000"));
+        assertTrue(checkHostname("1234-bbbb-cccc000"));
+        assertTrue(checkHostname("0123456789abcdef"
+                                + "0123456789abcdef"
+                                + "0123456789abcdef"
+                                + "0123456789abcde" // 63 characters
+                        ));
+
+        // Invalid cases
+        assertFalse(checkHostname("?"));
+        assertFalse(checkHostname("/"));
+        assertFalse(checkHostname("a-"));
+        assertFalse(checkHostname("B-"));
+        assertFalse(checkHostname("-A"));
+        assertFalse(checkHostname("-b"));
+        assertFalse(checkHostname("-1-"));
+        assertFalse(checkHostname("0123456789abcdef"
+                                + "0123456789abcdef"
+                                + "0123456789abcdef"
+                                + "0123456789abcdef" // 64 characters
+                        ));
+    }
+
+    @Test
     @EnableCompatChanges(ENABLE_PLATFORM_MDNS_BACKEND)
     public void testEnablePlatformMdnsBackend() {
         final NsdManager client = connectClient(mService);
diff --git a/tests/unit/java/com/android/server/connectivity/CarrierPrivilegeAuthenticatorTest.java b/tests/unit/java/com/android/server/connectivity/CarrierPrivilegeAuthenticatorTest.java
index 7bd2b56..ab81abc 100644
--- a/tests/unit/java/com/android/server/connectivity/CarrierPrivilegeAuthenticatorTest.java
+++ b/tests/unit/java/com/android/server/connectivity/CarrierPrivilegeAuthenticatorTest.java
@@ -21,6 +21,7 @@
 import static android.telephony.TelephonyManager.ACTION_MULTI_SIM_CONFIG_CHANGED;
 
 import static com.android.server.connectivity.ConnectivityFlags.CARRIER_SERVICE_CHANGED_USE_CALLBACK;
+import static com.android.testutils.HandlerUtils.visibleOnHandlerThread;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -45,6 +46,7 @@
 import android.net.NetworkCapabilities;
 import android.net.TelephonyNetworkSpecifier;
 import android.os.Build;
+import android.os.Handler;
 import android.os.HandlerThread;
 import android.telephony.TelephonyManager;
 
@@ -56,6 +58,7 @@
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 import com.android.testutils.DevSdkIgnoreRunner;
+import com.android.testutils.HandlerUtils;
 
 import org.junit.After;
 import org.junit.Rule;
@@ -85,6 +88,7 @@
 
     private static final int SUBSCRIPTION_COUNT = 2;
     private static final int TEST_SUBSCRIPTION_ID = 1;
+    private static final int TIMEOUT_MS = 1_000;
 
     @NonNull private final Context mContext;
     @NonNull private final TelephonyManager mTelephonyManager;
@@ -97,13 +101,16 @@
     private final String mTestPkg = "com.android.server.connectivity.test";
     private final BroadcastReceiver mMultiSimBroadcastReceiver;
     @NonNull private final HandlerThread mHandlerThread;
+    @NonNull private final Handler mCsHandler;
+    @NonNull private final HandlerThread mCsHandlerThread;
 
     public class TestCarrierPrivilegeAuthenticator extends CarrierPrivilegeAuthenticator {
         TestCarrierPrivilegeAuthenticator(@NonNull final Context c,
                 @NonNull final Dependencies deps,
-                @NonNull final TelephonyManager t) {
+                @NonNull final TelephonyManager t,
+                @NonNull final Handler handler) {
             super(c, deps, t, mTelephonyManagerShim, true /* requestRestrictedWifiEnabled */,
-                    mListener);
+                    mListener, handler);
         }
         @Override
         protected int getSubId(int slotIndex) {
@@ -112,8 +119,11 @@
     }
 
     @After
-    public void tearDown() {
+    public void tearDown() throws Exception {
         mHandlerThread.quit();
+        mHandlerThread.join();
+        mCsHandlerThread.quit();
+        mCsHandlerThread.join();
     }
 
     /** Parameters to test both using callbacks or the old broadcast */
@@ -141,8 +151,14 @@
         final ApplicationInfo applicationInfo = new ApplicationInfo();
         applicationInfo.uid = mCarrierConfigPkgUid;
         doReturn(applicationInfo).when(mPackageManager).getApplicationInfo(eq(mTestPkg), anyInt());
-        mCarrierPrivilegeAuthenticator =
-                new TestCarrierPrivilegeAuthenticator(mContext, deps, mTelephonyManager);
+        mCsHandlerThread = new HandlerThread(
+                CarrierPrivilegeAuthenticatorTest.class.getSimpleName() + "-CsHandlerThread");
+        mCsHandlerThread.start();
+        mCsHandler = new Handler(mCsHandlerThread.getLooper());
+        mCarrierPrivilegeAuthenticator = new TestCarrierPrivilegeAuthenticator(mContext, deps,
+                mTelephonyManager, mCsHandler);
+        mCarrierPrivilegeAuthenticator.start();
+        HandlerUtils.waitForIdle(mCsHandlerThread, TIMEOUT_MS);
         final ArgumentCaptor<BroadcastReceiver> receiverCaptor =
                 ArgumentCaptor.forClass(BroadcastReceiver.class);
         verify(mContext).registerReceiver(receiverCaptor.capture(), argThat(filter ->
@@ -178,7 +194,9 @@
         assertNotNull(initialListeners.get(1));
         assertEquals(2, initialListeners.size());
 
-        initialListeners.get(0).onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            initialListeners.get(0).onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        });
 
         final NetworkCapabilities.Builder ncBuilder = new NetworkCapabilities.Builder()
                 .addTransportType(TRANSPORT_CELLULAR)
@@ -201,10 +219,10 @@
 
         doReturn(1).when(mTelephonyManager).getActiveModemCount();
 
-        // This is a little bit cavalier in that the call to onReceive is not on the handler
-        // thread that was specified in registerReceiver.
-        // TODO : capture the handler and call this on it if this causes flakiness.
-        mMultiSimBroadcastReceiver.onReceive(mContext, buildTestMultiSimConfigBroadcastIntent());
+        visibleOnHandlerThread(mCsHandler, () -> {
+            mMultiSimBroadcastReceiver.onReceive(mContext,
+                    buildTestMultiSimConfigBroadcastIntent());
+        });
         // Check all listeners have been removed
         for (CarrierPrivilegesListenerShim listener : initialListeners.values()) {
             verify(mTelephonyManagerShim).removeCarrierPrivilegesListener(eq(listener));
@@ -216,7 +234,9 @@
         assertNotNull(newListeners.get(0));
         assertEquals(1, newListeners.size());
 
-        newListeners.get(0).onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            newListeners.get(0).onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        });
 
         final TelephonyNetworkSpecifier specifier =
                 new TelephonyNetworkSpecifier(TEST_SUBSCRIPTION_ID);
@@ -235,12 +255,17 @@
     public void testCarrierPrivilegesLostDueToCarrierServiceUpdate() throws Exception {
         final CarrierPrivilegesListenerShim l = getCarrierPrivilegesListeners().get(0);
 
-        l.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
-        l.onCarrierServiceChanged(null, mCarrierConfigPkgUid + 1);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            l.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+            l.onCarrierServiceChanged(null, mCarrierConfigPkgUid + 1);
+        });
         if (mUseCallbacks) {
             verify(mListener).accept(eq(mCarrierConfigPkgUid), eq(TEST_SUBSCRIPTION_ID));
         }
-        l.onCarrierServiceChanged(null, mCarrierConfigPkgUid + 2);
+
+        visibleOnHandlerThread(mCsHandler, () -> {
+            l.onCarrierServiceChanged(null, mCarrierConfigPkgUid + 2);
+        });
         if (mUseCallbacks) {
             verify(mListener).accept(eq(mCarrierConfigPkgUid + 1), eq(TEST_SUBSCRIPTION_ID));
         }
@@ -260,8 +285,10 @@
         final ApplicationInfo applicationInfo = new ApplicationInfo();
         applicationInfo.uid = mCarrierConfigPkgUid + 1;
         doReturn(applicationInfo).when(mPackageManager).getApplicationInfo(eq(mTestPkg), anyInt());
-        listener.onCarrierPrivilegesChanged(Collections.emptyList(), new int[] {});
-        listener.onCarrierServiceChanged(null, applicationInfo.uid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            listener.onCarrierPrivilegesChanged(Collections.emptyList(), new int[]{});
+            listener.onCarrierServiceChanged(null, applicationInfo.uid);
+        });
 
         assertFalse(mCarrierPrivilegeAuthenticator.isCarrierServiceUidForNetworkCapabilities(
                 mCarrierConfigPkgUid, nc));
@@ -272,7 +299,9 @@
     @Test
     public void testDefaultSubscription() throws Exception {
         final CarrierPrivilegesListenerShim listener = getCarrierPrivilegesListeners().get(0);
-        listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        });
 
         final NetworkCapabilities.Builder ncBuilder = new NetworkCapabilities.Builder();
         ncBuilder.addTransportType(TRANSPORT_CELLULAR);
@@ -297,7 +326,9 @@
     @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
     public void testNetworkCapabilitiesContainOneSubId() throws Exception {
         final CarrierPrivilegesListenerShim listener = getCarrierPrivilegesListeners().get(0);
-        listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        });
 
         final NetworkCapabilities.Builder ncBuilder = new NetworkCapabilities.Builder();
         ncBuilder.addTransportType(TRANSPORT_WIFI);
@@ -311,7 +342,9 @@
     @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
     public void testNetworkCapabilitiesContainTwoSubIds() throws Exception {
         final CarrierPrivilegesListenerShim listener = getCarrierPrivilegesListeners().get(0);
-        listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        visibleOnHandlerThread(mCsHandler, () -> {
+            listener.onCarrierServiceChanged(null, mCarrierConfigPkgUid);
+        });
 
         final NetworkCapabilities.Builder ncBuilder = new NetworkCapabilities.Builder();
         ncBuilder.addTransportType(TRANSPORT_WIFI);
diff --git a/tests/unit/java/com/android/server/connectivity/ClatCoordinatorTest.java b/tests/unit/java/com/android/server/connectivity/ClatCoordinatorTest.java
index 88044be..72dde7f 100644
--- a/tests/unit/java/com/android/server/connectivity/ClatCoordinatorTest.java
+++ b/tests/unit/java/com/android/server/connectivity/ClatCoordinatorTest.java
@@ -38,6 +38,7 @@
 import static org.mockito.Mockito.clearInvocations;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.verify;
@@ -418,21 +419,6 @@
         inOrder.verify(mDeps).generateIpv6Address(eq(BASE_IFACE),
                 eq(XLAT_LOCAL_IPV4ADDR_STRING), eq(NAT64_PREFIX_STRING), eq(MARK));
 
-        // Open, configure and bring up the tun interface.
-        inOrder.verify(mDeps).createTunInterface(eq(STACKED_IFACE));
-        inOrder.verify(mDeps).adoptFd(eq(TUN_FD));
-        inOrder.verify(mDeps).getInterfaceIndex(eq(STACKED_IFACE));
-        inOrder.verify(mNetd).interfaceSetEnableIPv6(eq(STACKED_IFACE), eq(false /* enable */));
-        inOrder.verify(mDeps).detectMtu(eq(NAT64_PREFIX_STRING), eq(GOOGLE_DNS_4), eq(MARK));
-        inOrder.verify(mNetd).interfaceSetMtu(eq(STACKED_IFACE),
-                eq(1472 /* ETHER_MTU(1500) - MTU_DELTA(28) */));
-        inOrder.verify(mNetd).interfaceSetCfg(argThat(cfg ->
-                STACKED_IFACE.equals(cfg.ifName)
-                && XLAT_LOCAL_IPV4ADDR_STRING.equals(cfg.ipv4Addr)
-                && (32 == cfg.prefixLength)
-                && "".equals(cfg.hwAddr)
-                && assertContainsFlag(cfg.flags, IF_STATE_UP)));
-
         // Open and configure 464xlat read/write sockets.
         inOrder.verify(mDeps).openPacketSocket();
         inOrder.verify(mDeps).adoptFd(eq(PACKET_SOCK_FD));
@@ -449,6 +435,21 @@
                 argThat(fd -> Objects.equals(PACKET_SOCK_PFD.getFileDescriptor(), fd)),
                 eq(XLAT_LOCAL_IPV6ADDR_STRING), eq(BASE_IFINDEX));
 
+        // Open, configure and bring up the tun interface.
+        inOrder.verify(mDeps).createTunInterface(eq(STACKED_IFACE));
+        inOrder.verify(mDeps).adoptFd(eq(TUN_FD));
+        inOrder.verify(mDeps).getInterfaceIndex(eq(STACKED_IFACE));
+        inOrder.verify(mNetd).interfaceSetEnableIPv6(eq(STACKED_IFACE), eq(false /* enable */));
+        inOrder.verify(mDeps).detectMtu(eq(NAT64_PREFIX_STRING), eq(GOOGLE_DNS_4), eq(MARK));
+        inOrder.verify(mNetd).interfaceSetMtu(eq(STACKED_IFACE),
+                eq(1472 /* ETHER_MTU(1500) - MTU_DELTA(28) */));
+        inOrder.verify(mNetd).interfaceSetCfg(argThat(cfg ->
+                STACKED_IFACE.equals(cfg.ifName)
+                        && XLAT_LOCAL_IPV4ADDR_STRING.equals(cfg.ipv4Addr)
+                        && (32 == cfg.prefixLength)
+                        && "".equals(cfg.hwAddr)
+                        && assertContainsFlag(cfg.flags, IF_STATE_UP)));
+
         // Start clatd.
         inOrder.verify(mDeps).startClatd(
                 argThat(fd -> Objects.equals(TUN_PFD.getFileDescriptor(), fd)),
@@ -526,13 +527,13 @@
                     + "v4: /192.0.0.46, v6: /2001:db8:0:b11::464, pfx96: /64:ff9b::, "
                     + "pid: 10483, cookie: 27149", dumpStrings[0].trim());
             assertEquals("Forwarding rules:", dumpStrings[1].trim());
-            assertEquals("BPF ingress map: iif nat64Prefix v6Addr -> v4Addr oif",
+            assertEquals("BPF ingress map: iif nat64Prefix v6Addr -> v4Addr oif (packets bytes)",
                     dumpStrings[2].trim());
-            assertEquals("1000 /64:ff9b::/96 /2001:db8:0:b11::464 -> /192.0.0.46 1001",
+            assertEquals("1000 /64:ff9b::/96 /2001:db8:0:b11::464 -> /192.0.0.46 1001 (0 0)",
                     dumpStrings[3].trim());
-            assertEquals("BPF egress map: iif v4Addr -> v6Addr nat64Prefix oif",
+            assertEquals("BPF egress map: iif v4Addr -> v6Addr nat64Prefix oif (packets bytes)",
                     dumpStrings[4].trim());
-            assertEquals("1001 /192.0.0.46 -> /2001:db8:0:b11::464 /64:ff9b::/96 1000 ether",
+            assertEquals("1001 /192.0.0.46 -> /2001:db8:0:b11::464 /64:ff9b::/96 1000 ether (0 0)",
                     dumpStrings[5].trim());
         } else {
             assertEquals(1, dumpStrings.length);
@@ -630,9 +631,13 @@
             public int createTunInterface(@NonNull String tuniface) throws IOException {
                 throw new IOException();
             }
+            @Override
+            public IBpfMap<CookieTagMapKey, CookieTagMapValue> getBpfCookieTagMap() {
+                return  mock(IBpfMap.class);
+            }
         }
         checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
-                false /* needToClosePacketSockFd */, false /* needToCloseRawSockFd */);
+                true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 
     @Test
@@ -643,9 +648,14 @@
                     throws IOException {
                 throw new IOException();
             }
+
+            @Override
+            public IBpfMap<CookieTagMapKey, CookieTagMapValue> getBpfCookieTagMap() {
+                return  mock(IBpfMap.class);
+            }
         }
         checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
-                false /* needToClosePacketSockFd */, false /* needToCloseRawSockFd */);
+                true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 
     @Test
@@ -656,7 +666,7 @@
                 throw new IOException();
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 false /* needToClosePacketSockFd */, false /* needToCloseRawSockFd */);
     }
 
@@ -668,7 +678,7 @@
                 throw new IOException();
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 true /* needToClosePacketSockFd */, false /* needToCloseRawSockFd */);
     }
 
@@ -681,7 +691,7 @@
                 throw new IOException();
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 
@@ -694,7 +704,7 @@
                 throw new IOException();
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 
@@ -721,7 +731,7 @@
                 throw new IOException();
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 
@@ -733,7 +743,7 @@
                 return null;
             }
         }
-        checkNotStartClat(new FailureDependencies(), true /* needToCloseTunFd */,
+        checkNotStartClat(new FailureDependencies(), false /* needToCloseTunFd */,
                 true /* needToClosePacketSockFd */, true /* needToCloseRawSockFd */);
     }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/DnsManagerTest.java b/tests/unit/java/com/android/server/connectivity/DnsManagerTest.java
index 44512bb..ea3d2dd 100644
--- a/tests/unit/java/com/android/server/connectivity/DnsManagerTest.java
+++ b/tests/unit/java/com/android/server/connectivity/DnsManagerTest.java
@@ -29,8 +29,6 @@
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.VALIDATION_RESULT_FAILURE;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.VALIDATION_RESULT_SUCCESS;
 
-import static com.android.testutils.MiscAsserts.assertContainsExactly;
-import static com.android.testutils.MiscAsserts.assertContainsStringsExactly;
 import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
 
 import static org.junit.Assert.assertEquals;
@@ -38,12 +36,12 @@
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.reset;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
-import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.Context;
 import android.net.ConnectivitySettingsManager;
@@ -74,7 +72,6 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -122,29 +119,6 @@
         assertFieldCountEquals(3, ResolverOptionsParcel.class);
     }
 
-    private void assertResolverParamsEquals(@NonNull ResolverParamsParcel actual,
-            @NonNull ResolverParamsParcel expected) {
-        assertEquals(actual.netId, expected.netId);
-        assertEquals(actual.sampleValiditySeconds, expected.sampleValiditySeconds);
-        assertEquals(actual.successThreshold, expected.successThreshold);
-        assertEquals(actual.minSamples, expected.minSamples);
-        assertEquals(actual.maxSamples, expected.maxSamples);
-        assertEquals(actual.baseTimeoutMsec, expected.baseTimeoutMsec);
-        assertEquals(actual.retryCount, expected.retryCount);
-        assertContainsStringsExactly(actual.servers, expected.servers);
-        assertContainsStringsExactly(actual.domains, expected.domains);
-        assertEquals(actual.tlsName, expected.tlsName);
-        assertContainsStringsExactly(actual.tlsServers, expected.tlsServers);
-        assertContainsStringsExactly(actual.tlsFingerprints, expected.tlsFingerprints);
-        assertEquals(actual.caCertificate, expected.caCertificate);
-        assertEquals(actual.tlsConnectTimeoutMs, expected.tlsConnectTimeoutMs);
-        assertResolverOptionsEquals(actual.resolverOptions, expected.resolverOptions);
-        assertContainsExactly(actual.transportTypes, expected.transportTypes);
-        assertEquals(actual.meteredNetwork, expected.meteredNetwork);
-        assertEquals(actual.dohParams, expected.dohParams);
-        assertFieldCountEquals(18, ResolverParamsParcel.class);
-    }
-
     @Before
     public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
@@ -365,11 +339,6 @@
         mDnsManager.noteDnsServersForNetwork(TEST_NETID, lp);
         mDnsManager.flushVmDnsCache();
 
-        final ArgumentCaptor<ResolverParamsParcel> resolverParamsParcelCaptor =
-                ArgumentCaptor.forClass(ResolverParamsParcel.class);
-        verify(mMockDnsResolver, times(1)).setResolverConfiguration(
-                resolverParamsParcelCaptor.capture());
-        final ResolverParamsParcel actualParams = resolverParamsParcelCaptor.getValue();
         final ResolverParamsParcel expectedParams = new ResolverParamsParcel();
         expectedParams.netId = TEST_NETID;
         expectedParams.sampleValiditySeconds = TEST_DEFAULT_SAMPLE_VALIDITY_SECONDS;
@@ -384,7 +353,8 @@
         expectedParams.resolverOptions = null;
         expectedParams.meteredNetwork = true;
         expectedParams.dohParams = null;
-        assertResolverParamsEquals(actualParams, expectedParams);
+        expectedParams.interfaceNames = new String[]{TEST_IFACENAME};
+        verify(mMockDnsResolver, times(1)).setResolverConfiguration(eq(expectedParams));
     }
 
     @Test
diff --git a/tests/unit/java/com/android/server/connectivity/MulticastRoutingCoordinatorServiceTest.kt b/tests/unit/java/com/android/server/connectivity/MulticastRoutingCoordinatorServiceTest.kt
index 6c2c256..5c994f5 100644
--- a/tests/unit/java/com/android/server/connectivity/MulticastRoutingCoordinatorServiceTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/MulticastRoutingCoordinatorServiceTest.kt
@@ -402,15 +402,18 @@
                 mService.getVirtualInterfaceIndex(mIfName1), oifsUpdate)
         val mf6cctlDel = createStructMf6cctl(mSourceAddress, mGroupAddressScope5,
                 mService.getVirtualInterfaceIndex(mIfName1), mEmptyOifs)
+        val ifName1Copy = String(mIfName1.toCharArray())
+        val ifName2Copy = String(mIfName2.toCharArray())
+        val ifName3Copy = String(mIfName3.toCharArray())
 
         verify(mDeps).setsockoptMrt6AddMfc(eq(mFd), eq(mf6cctlAdd))
 
-        applyMulticastForwardNone(mIfName1, mIfName2)
+        applyMulticastForwardNone(ifName1Copy, ifName2Copy)
         mLooper.dispatchAll()
 
         verify(mDeps).setsockoptMrt6AddMfc(eq(mFd), eq(mf6cctlUpdate))
 
-        applyMulticastForwardNone(mIfName1, mIfName3)
+        applyMulticastForwardNone(ifName1Copy, ifName3Copy)
         mLooper.dispatchAll()
 
         verify(mDeps, timeout(TIMEOUT_MS).times(1)).setsockoptMrt6DelMfc(eq(mFd), eq(mf6cctlDel))
diff --git a/tests/unit/java/com/android/server/connectivity/NetworkNotificationManagerTest.java b/tests/unit/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
index 7121ed4..727db58 100644
--- a/tests/unit/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
+++ b/tests/unit/java/com/android/server/connectivity/NetworkNotificationManagerTest.java
@@ -113,6 +113,7 @@
     private static final NetworkCapabilities CELL_CAPABILITIES = new NetworkCapabilities();
     private static final NetworkCapabilities WIFI_CAPABILITIES = new NetworkCapabilities();
     private static final NetworkCapabilities VPN_CAPABILITIES = new NetworkCapabilities();
+    private static final NetworkCapabilities BT_CAPABILITIES = new NetworkCapabilities();
     static {
         CELL_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
         CELL_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
@@ -128,6 +129,9 @@
         VPN_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_VPN);
         VPN_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
         VPN_CAPABILITIES.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VPN);
+
+        BT_CAPABILITIES.addTransportType(NetworkCapabilities.TRANSPORT_BLUETOOTH);
+        BT_CAPABILITIES.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
     }
 
     /**
@@ -159,7 +163,9 @@
     @Mock NetworkAgentInfo mWifiNai;
     @Mock NetworkAgentInfo mCellNai;
     @Mock NetworkAgentInfo mVpnNai;
+    @Mock NetworkAgentInfo mBluetoothNai;
     @Mock NetworkInfo mNetworkInfo;
+    @Mock NetworkInfo mEmptyNetworkInfo;
     ArgumentCaptor<Notification> mCaptor;
 
     NetworkNotificationManager mManager;
@@ -174,6 +180,8 @@
         mCellNai.networkInfo = mNetworkInfo;
         mVpnNai.networkCapabilities = VPN_CAPABILITIES;
         mVpnNai.networkInfo = mNetworkInfo;
+        mBluetoothNai.networkCapabilities = BT_CAPABILITIES;
+        mBluetoothNai.networkInfo = mEmptyNetworkInfo;
         mDisplayMetrics.density = 2.275f;
         doReturn(true).when(mVpnNai).isVPN();
         doReturn(mResources).when(mCtx).getResources();
@@ -542,10 +550,11 @@
                 R.string.wifi_no_internet_detailed);
     }
 
-    private void runTelephonySignInNotificationTest(String testTitle, String testContents) {
+    private void runSignInNotificationTest(NetworkAgentInfo nai, String testTitle,
+            String testContents) {
         final int id = 101;
         final String tag = NetworkNotificationManager.tagFor(id);
-        mManager.showNotification(id, SIGN_IN, mCellNai, null, null, false);
+        mManager.showNotification(id, SIGN_IN, nai, null, null, false);
 
         final ArgumentCaptor<Notification> noteCaptor = ArgumentCaptor.forClass(Notification.class);
         verify(mNotificationManager).notify(eq(tag), eq(SIGN_IN.eventId), noteCaptor.capture());
@@ -565,7 +574,7 @@
         doReturn(testContents).when(mResources).getString(
                 R.string.mobile_network_available_no_internet_detailed, TEST_OPERATOR_NAME);
 
-        runTelephonySignInNotificationTest(testTitle, testContents);
+        runSignInNotificationTest(mCellNai, testTitle, testContents);
     }
 
     @Test
@@ -579,6 +588,21 @@
         doReturn(testContents).when(mResources).getString(
                 R.string.mobile_network_available_no_internet_detailed_unknown_carrier);
 
-        runTelephonySignInNotificationTest(testTitle, testContents);
+        runSignInNotificationTest(mCellNai, testTitle, testContents);
+    }
+
+    @Test
+    public void testBluetoothSignInNotification_EmptyNotificationContents() {
+        final String testTitle = "Test title";
+        final String testContents = "Test contents";
+        doReturn(testTitle).when(mResources).getString(
+                R.string.network_available_sign_in, 0);
+        doReturn(testContents).when(mResources).getString(
+                eq(R.string.network_available_sign_in_detailed), any());
+
+        runSignInNotificationTest(mBluetoothNai, testTitle, testContents);
+        // The details should be queried with an empty string argument. In practice the notification
+        // contents may just be an empty string, since the default translation just outputs the arg.
+        verify(mResources).getString(eq(R.string.network_available_sign_in_detailed), eq(""));
     }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/SatelliteAccessControllerTest.kt b/tests/unit/java/com/android/server/connectivity/SatelliteAccessControllerTest.kt
index 193078b..7885325 100644
--- a/tests/unit/java/com/android/server/connectivity/SatelliteAccessControllerTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/SatelliteAccessControllerTest.kt
@@ -18,17 +18,22 @@
 import android.Manifest
 import android.app.role.OnRoleHoldersChangedListener
 import android.app.role.RoleManager
+import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
 import android.content.pm.ApplicationInfo
 import android.content.pm.PackageManager
-import android.content.pm.UserInfo
 import android.os.Build
 import android.os.Handler
+import android.os.Looper
 import android.os.UserHandle
+import android.os.UserManager
 import android.util.ArraySet
-import com.android.server.makeMockUserManager
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
+import java.util.concurrent.Executor
+import java.util.function.Consumer
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -36,30 +41,32 @@
 import org.mockito.ArgumentMatchers.any
 import org.mockito.ArgumentMatchers.anyInt
 import org.mockito.ArgumentMatchers.eq
+import org.mockito.ArgumentMatchers.isNull
 import org.mockito.Mockito.doReturn
 import org.mockito.Mockito.mock
 import org.mockito.Mockito.never
+import org.mockito.Mockito.timeout
+import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
-import java.util.concurrent.Executor
-import java.util.function.Consumer
 
-private const val USER = 0
-val USER_INFO = UserInfo(USER, "" /* name */, UserInfo.FLAG_PRIMARY)
-val USER_HANDLE = UserHandle(USER)
 private const val PRIMARY_USER = 0
 private const val SECONDARY_USER = 10
 private val PRIMARY_USER_HANDLE = UserHandle.of(PRIMARY_USER)
 private val SECONDARY_USER_HANDLE = UserHandle.of(SECONDARY_USER)
+
 // sms app names
 private const val SMS_APP1 = "sms_app_1"
 private const val SMS_APP2 = "sms_app_2"
+
 // sms app ids
 private const val SMS_APP_ID1 = 100
 private const val SMS_APP_ID2 = 101
+
 // UID for app1 and app2 on primary user
 // These app could become default sms app for user1
 private val PRIMARY_USER_SMS_APP_UID1 = UserHandle.getUid(PRIMARY_USER, SMS_APP_ID1)
 private val PRIMARY_USER_SMS_APP_UID2 = UserHandle.getUid(PRIMARY_USER, SMS_APP_ID2)
+
 // UID for app1 and app2 on secondary user
 // These app could become default sms app for user2
 private val SECONDARY_USER_SMS_APP_UID1 = UserHandle.getUid(SECONDARY_USER, SMS_APP_ID1)
@@ -69,154 +76,259 @@
 @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
 class SatelliteAccessControllerTest {
     private val context = mock(Context::class.java)
-    private val mPackageManager = mock(PackageManager::class.java)
-    private val mHandler = mock(Handler::class.java)
-    private val mRoleManager =
-        mock(SatelliteAccessController.Dependencies::class.java)
+    private val primaryUserContext = mock(Context::class.java)
+    private val secondaryUserContext = mock(Context::class.java)
+    private val mPackageManagerPrimaryUser = mock(PackageManager::class.java)
+    private val mPackageManagerSecondaryUser = mock(PackageManager::class.java)
+    private val mDeps = mock(SatelliteAccessController.Dependencies::class.java)
     private val mCallback = mock(Consumer::class.java) as Consumer<Set<Int>>
-    private val mSatelliteAccessController =
-        SatelliteAccessController(context, mRoleManager, mCallback, mHandler)
+    private val userManager = mock(UserManager::class.java)
+    private val mHandler = Handler(Looper.getMainLooper())
+    private var mSatelliteAccessController =
+        SatelliteAccessController(context, mDeps, mCallback, mHandler)
     private lateinit var mRoleHolderChangedListener: OnRoleHoldersChangedListener
+    private lateinit var mUserRemovedReceiver: BroadcastReceiver
+
+    private fun <T> mockService(name: String, clazz: Class<T>, service: T) {
+        doReturn(name).`when`(context).getSystemServiceName(clazz)
+        doReturn(service).`when`(context).getSystemService(name)
+        if (context.getSystemService(clazz) == null) {
+            // Test is using mockito-extended
+            doReturn(service).`when`(context).getSystemService(clazz)
+        }
+    }
+
     @Before
     @Throws(PackageManager.NameNotFoundException::class)
     fun setup() {
-        makeMockUserManager(USER_INFO, USER_HANDLE)
-        doReturn(context).`when`(context).createContextAsUser(any(), anyInt())
-        doReturn(mPackageManager).`when`(context).packageManager
+        doReturn(emptyList<UserHandle>()).`when`(userManager).getUserHandles(true)
+        mockService(Context.USER_SERVICE, UserManager::class.java, userManager)
 
-        doReturn(PackageManager.PERMISSION_GRANTED)
-            .`when`(mPackageManager)
-            .checkPermission(Manifest.permission.SATELLITE_COMMUNICATION, SMS_APP1)
-        doReturn(PackageManager.PERMISSION_GRANTED)
-            .`when`(mPackageManager)
-            .checkPermission(Manifest.permission.SATELLITE_COMMUNICATION, SMS_APP2)
+        doReturn(primaryUserContext).`when`(context).createContextAsUser(PRIMARY_USER_HANDLE, 0)
+        doReturn(mPackageManagerPrimaryUser).`when`(primaryUserContext).packageManager
 
-        // Initialise default message application primary user package1
+        doReturn(secondaryUserContext).`when`(context).createContextAsUser(SECONDARY_USER_HANDLE, 0)
+        doReturn(mPackageManagerSecondaryUser).`when`(secondaryUserContext).packageManager
+
+        for (app in listOf(SMS_APP1, SMS_APP2)) {
+            doReturn(PackageManager.PERMISSION_GRANTED)
+                .`when`(mPackageManagerPrimaryUser)
+                .checkPermission(Manifest.permission.SATELLITE_COMMUNICATION, app)
+            doReturn(PackageManager.PERMISSION_GRANTED)
+                .`when`(mPackageManagerSecondaryUser)
+                .checkPermission(Manifest.permission.SATELLITE_COMMUNICATION, app)
+        }
+
+        // Initialise message application primary user package1
         val applicationInfo1 = ApplicationInfo()
         applicationInfo1.uid = PRIMARY_USER_SMS_APP_UID1
         doReturn(applicationInfo1)
-            .`when`(mPackageManager)
+            .`when`(mPackageManagerPrimaryUser)
             .getApplicationInfo(eq(SMS_APP1), anyInt())
 
-        // Initialise default message application primary user package2
+        // Initialise message application primary user package2
         val applicationInfo2 = ApplicationInfo()
         applicationInfo2.uid = PRIMARY_USER_SMS_APP_UID2
         doReturn(applicationInfo2)
-            .`when`(mPackageManager)
+            .`when`(mPackageManagerPrimaryUser)
             .getApplicationInfo(eq(SMS_APP2), anyInt())
 
-        // Get registered listener using captor
-        val listenerCaptor = ArgumentCaptor.forClass(
-            OnRoleHoldersChangedListener::class.java
-        )
-        mSatelliteAccessController.start()
-        verify(mRoleManager).addOnRoleHoldersChangedListenerAsUser(
-            any(Executor::class.java), listenerCaptor.capture(), any(UserHandle::class.java))
-        mRoleHolderChangedListener = listenerCaptor.value
+        // Initialise message application secondary user package1
+        val applicationInfo3 = ApplicationInfo()
+        applicationInfo3.uid = SECONDARY_USER_SMS_APP_UID1
+        doReturn(applicationInfo3)
+            .`when`(mPackageManagerSecondaryUser)
+            .getApplicationInfo(eq(SMS_APP1), anyInt())
+
+        // Initialise message application secondary user package2
+        val applicationInfo4 = ApplicationInfo()
+        applicationInfo4.uid = SECONDARY_USER_SMS_APP_UID2
+        doReturn(applicationInfo4)
+            .`when`(mPackageManagerSecondaryUser)
+            .getApplicationInfo(eq(SMS_APP2), anyInt())
     }
 
     @Test
     fun test_onRoleHoldersChanged_SatelliteFallbackUid_Changed_SingleUser() {
-        doReturn(listOf<String>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        startSatelliteAccessController()
+        doReturn(listOf<String>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback, never()).accept(any())
 
         // check DEFAULT_MESSAGING_APP1 is available as satellite network fallback uid
         doReturn(listOf(SMS_APP1))
-            .`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID1))
 
         // check SMS_APP2 is available as satellite network Fallback uid
-        doReturn(listOf(SMS_APP2)).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        doReturn(listOf(SMS_APP2)).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID2))
 
         // check no uid is available as satellite network fallback uid
-        doReturn(listOf<String>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        doReturn(listOf<String>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback).accept(ArraySet())
     }
 
     @Test
     fun test_onRoleHoldersChanged_NoSatelliteCommunicationPermission() {
-        doReturn(listOf<Any>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        startSatelliteAccessController()
+        doReturn(listOf<Any>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback, never()).accept(any())
 
         // check DEFAULT_MESSAGING_APP1 is not available as satellite network fallback uid
         // since satellite communication permission not available.
         doReturn(PackageManager.PERMISSION_DENIED)
-            .`when`(mPackageManager)
+            .`when`(mPackageManagerPrimaryUser)
             .checkPermission(Manifest.permission.SATELLITE_COMMUNICATION, SMS_APP1)
         doReturn(listOf(SMS_APP1))
-            .`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback, never()).accept(any())
     }
 
     @Test
     fun test_onRoleHoldersChanged_RoleSms_NotAvailable() {
+        startSatelliteAccessController()
         doReturn(listOf(SMS_APP1))
-            .`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
-        mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_BROWSER,
-            PRIMARY_USER_HANDLE)
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+        mRoleHolderChangedListener.onRoleHoldersChanged(
+            RoleManager.ROLE_BROWSER,
+            PRIMARY_USER_HANDLE
+        )
         verify(mCallback, never()).accept(any())
     }
 
     @Test
     fun test_onRoleHoldersChanged_SatelliteNetworkFallbackUid_Changed_multiUser() {
-        doReturn(listOf<String>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        startSatelliteAccessController()
+        doReturn(listOf<String>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback, never()).accept(any())
 
         // check SMS_APP1 is available as satellite network fallback uid at primary user
         doReturn(listOf(SMS_APP1))
-            .`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID1))
 
         // check SMS_APP2 is available as satellite network fallback uid at primary user
-        doReturn(listOf(SMS_APP2)).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        doReturn(listOf(SMS_APP2)).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
         verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID2))
 
         // check SMS_APP1 is available as satellite network fallback uid at secondary user
-        val applicationInfo1 = ApplicationInfo()
-        applicationInfo1.uid = SECONDARY_USER_SMS_APP_UID1
-        doReturn(applicationInfo1).`when`(mPackageManager)
-            .getApplicationInfo(eq(SMS_APP1), anyInt())
-        doReturn(listOf(SMS_APP1)).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            SECONDARY_USER_HANDLE)
+        doReturn(listOf(SMS_APP1)).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            SECONDARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
         verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID2, SECONDARY_USER_SMS_APP_UID1))
 
         // check no uid is available as satellite network fallback uid at primary user
-        doReturn(listOf<String>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
-        mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS,
-            PRIMARY_USER_HANDLE)
+        doReturn(listOf<String>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
+        mRoleHolderChangedListener.onRoleHoldersChanged(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
         verify(mCallback).accept(setOf(SECONDARY_USER_SMS_APP_UID1))
 
         // check SMS_APP2 is available as satellite network fallback uid at secondary user
-        applicationInfo1.uid = SECONDARY_USER_SMS_APP_UID2
-        doReturn(applicationInfo1).`when`(mPackageManager)
-            .getApplicationInfo(eq(SMS_APP2), anyInt())
         doReturn(listOf(SMS_APP2))
-            .`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
         verify(mCallback).accept(setOf(SECONDARY_USER_SMS_APP_UID2))
 
         // check no uid is available as satellite network fallback uid at secondary user
-        doReturn(listOf<String>()).`when`(mRoleManager).getRoleHoldersAsUser(RoleManager.ROLE_SMS,
-            SECONDARY_USER_HANDLE)
+        doReturn(listOf<String>()).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            SECONDARY_USER_HANDLE
+        )
         mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
         verify(mCallback).accept(ArraySet())
     }
+
+    @Test
+    fun test_SatelliteFallbackUidCallback_OnUserRemoval() {
+        startSatelliteAccessController()
+        // check SMS_APP2 is available as satellite network fallback uid at primary user
+        doReturn(listOf(SMS_APP2)).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            PRIMARY_USER_HANDLE
+        )
+        mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+        verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID2))
+
+        // check SMS_APP1 is available as satellite network fallback uid at secondary user
+        doReturn(listOf(SMS_APP1)).`when`(mDeps).getRoleHoldersAsUser(
+            RoleManager.ROLE_SMS,
+            SECONDARY_USER_HANDLE
+        )
+        mRoleHolderChangedListener.onRoleHoldersChanged(RoleManager.ROLE_SMS, SECONDARY_USER_HANDLE)
+        verify(mCallback).accept(setOf(PRIMARY_USER_SMS_APP_UID2, SECONDARY_USER_SMS_APP_UID1))
+
+        val userRemovalIntent = Intent(Intent.ACTION_USER_REMOVED)
+        userRemovalIntent.putExtra(Intent.EXTRA_USER, SECONDARY_USER_HANDLE)
+        mUserRemovedReceiver.onReceive(context, userRemovalIntent)
+        verify(mCallback, times(2)).accept(setOf(PRIMARY_USER_SMS_APP_UID2))
+    }
+
+    @Test
+    fun testOnStartUpCallbackSatelliteFallbackUidWithExistingUsers() {
+        doReturn(
+            listOf(PRIMARY_USER_HANDLE)
+        ).`when`(userManager).getUserHandles(true)
+        doReturn(listOf(SMS_APP1))
+            .`when`(mDeps).getRoleHoldersAsUser(RoleManager.ROLE_SMS, PRIMARY_USER_HANDLE)
+        // At start up, SatelliteAccessController must call CS callback with existing users'
+        // default messaging apps uids.
+        startSatelliteAccessController()
+        verify(mCallback, timeout(500)).accept(setOf(PRIMARY_USER_SMS_APP_UID1))
+    }
+
+    private fun startSatelliteAccessController() {
+        mSatelliteAccessController.start()
+        // Get registered listener using captor
+        val listenerCaptor = ArgumentCaptor.forClass(OnRoleHoldersChangedListener::class.java)
+        verify(mDeps).addOnRoleHoldersChangedListenerAsUser(
+            any(Executor::class.java),
+            listenerCaptor.capture(),
+            any(UserHandle::class.java)
+        )
+        mRoleHolderChangedListener = listenerCaptor.value
+
+        // Get registered receiver using captor
+        val userRemovedReceiverCaptor = ArgumentCaptor.forClass(BroadcastReceiver::class.java)
+        verify(context).registerReceiver(
+            userRemovedReceiverCaptor.capture(),
+            any(IntentFilter::class.java),
+            isNull(),
+            any(Handler::class.java)
+        )
+         mUserRemovedReceiver = userRemovedReceiverCaptor.value
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
index b8ebf0f..df48f6c 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
@@ -286,7 +286,6 @@
 
         postSync { socketCb.onInterfaceDestroyed(TEST_SOCKETKEY_1, mockSocket1) }
         verify(mockInterfaceAdvertiser1).destroyNow()
-        postSync { intAdvCbCaptor.value.onDestroyed(mockSocket1) }
         verify(cb).onOffloadStop(eq(TEST_INTERFACE1), eq(OFFLOAD_SERVICEINFO_NO_SUBTYPE2))
     }
 
@@ -364,10 +363,10 @@
         verify(cb).onOffloadStop(eq(TEST_INTERFACE1), eq(OFFLOAD_SERVICEINFO))
         verify(cb).onOffloadStop(eq(TEST_INTERFACE2), eq(OFFLOAD_SERVICEINFO))
 
-        // Interface advertisers call onDestroyed after sending exit announcements
-        postSync { intAdvCbCaptor1.value.onDestroyed(mockSocket1) }
+        // Interface advertisers call onAllServicesRemoved after sending exit announcements
+        postSync { intAdvCbCaptor1.value.onAllServicesRemoved(mockSocket1) }
         verify(socketProvider, never()).unrequestSocket(any())
-        postSync { intAdvCbCaptor2.value.onDestroyed(mockSocket2) }
+        postSync { intAdvCbCaptor2.value.onAllServicesRemoved(mockSocket2) }
         verify(socketProvider).unrequestSocket(socketCb)
     }
 
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
index 5251e2a..b5c0132 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
@@ -18,6 +18,8 @@
 
 import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.fail;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.eq;
@@ -65,8 +67,9 @@
     private static final String SERVICE_TYPE_2 = "_test._tcp.local";
     private static final Network NETWORK_1 = Mockito.mock(Network.class);
     private static final Network NETWORK_2 = Mockito.mock(Network.class);
+    private static final int INTERFACE_INDEX_NULL_NETWORK = 123;
     private static final SocketKey SOCKET_KEY_NULL_NETWORK =
-            new SocketKey(null /* network */, 999 /* interfaceIndex */);
+            new SocketKey(null /* network */, INTERFACE_INDEX_NULL_NETWORK);
     private static final SocketKey SOCKET_KEY_NETWORK_1 =
             new SocketKey(NETWORK_1, 998 /* interfaceIndex */);
     private static final SocketKey SOCKET_KEY_NETWORK_2 =
@@ -97,6 +100,8 @@
     private HandlerThread thread;
     private Handler handler;
 
+    private int createdServiceTypeClientCount;
+
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
@@ -106,11 +111,13 @@
         handler = new Handler(thread.getLooper());
         doReturn(thread.getLooper()).when(socketClient).getLooper();
         doReturn(true).when(socketClient).supportsRequestingSpecificNetworks();
+        createdServiceTypeClientCount = 0;
         discoveryManager = new MdnsDiscoveryManager(executorProvider, socketClient,
                 sharedLog, MdnsFeatureFlags.newBuilder().build()) {
                     @Override
                     MdnsServiceTypeClient createServiceTypeClient(@NonNull String serviceType,
                             @NonNull SocketKey socketKey) {
+                        createdServiceTypeClientCount++;
                         final Pair<String, SocketKey> perSocketServiceType =
                                 Pair.create(serviceType, socketKey);
                         if (perSocketServiceType.equals(PER_SOCKET_SERVICE_TYPE_1_NULL_NETWORK)) {
@@ -128,6 +135,7 @@
                                 PER_SOCKET_SERVICE_TYPE_2_NETWORK_2)) {
                             return mockServiceTypeClientType2Network2;
                         }
+                        fail("Unexpected perSocketServiceType: " + perSocketServiceType);
                         return null;
                     }
                 };
@@ -324,7 +332,6 @@
 
         // Receive a response, it should be processed on the client.
         final MdnsPacket response = createMdnsPacket(SERVICE_TYPE_1);
-        final int ifIndex = 1;
         runOnHandler(() -> discoveryManager.onResponseReceived(response, SOCKET_KEY_NULL_NETWORK));
         verify(mockServiceTypeClientType1NullNetwork).processResponse(
                 response, SOCKET_KEY_NULL_NETWORK);
@@ -350,6 +357,39 @@
         verify(socketClient, never()).stopDiscovery();
     }
 
+    @Test
+    public void testInterfaceIndexRequested_OnlyUsesSelectedInterface() throws IOException {
+        final MdnsSearchOptions searchOptions =
+                MdnsSearchOptions.newBuilder()
+                        .setNetwork(null /* network */)
+                        .setInterfaceIndex(INTERFACE_INDEX_NULL_NETWORK)
+                        .build();
+
+        final SocketCreationCallback callback = expectSocketCreationCallback(
+                SERVICE_TYPE_1, mockListenerOne, searchOptions);
+        final SocketKey unusedIfaceKey = new SocketKey(null, INTERFACE_INDEX_NULL_NETWORK + 1);
+        final SocketKey matchingIfaceWithNetworkKey =
+                new SocketKey(Mockito.mock(Network.class), INTERFACE_INDEX_NULL_NETWORK);
+        runOnHandler(() -> {
+            callback.onSocketCreated(unusedIfaceKey);
+            callback.onSocketCreated(matchingIfaceWithNetworkKey);
+            callback.onSocketCreated(SOCKET_KEY_NULL_NETWORK);
+            callback.onSocketCreated(SOCKET_KEY_NETWORK_1);
+        });
+        // Only the client for INTERFACE_INDEX_NULL_NETWORK is created
+        verify(mockServiceTypeClientType1NullNetwork).startSendAndReceive(
+                mockListenerOne, searchOptions);
+        assertEquals(1, createdServiceTypeClientCount);
+
+        runOnHandler(() -> {
+            callback.onSocketDestroyed(SOCKET_KEY_NETWORK_1);
+            callback.onSocketDestroyed(SOCKET_KEY_NULL_NETWORK);
+            callback.onSocketDestroyed(matchingIfaceWithNetworkKey);
+            callback.onSocketDestroyed(unusedIfaceKey);
+        });
+        verify(mockServiceTypeClientType1NullNetwork).notifySocketDestroyed();
+    }
+
     private MdnsPacket createMdnsPacket(String serviceType) {
         final String[] type = TextUtils.split(serviceType, "\\.");
         final ArrayList<String> name = new ArrayList<>(type.length + 1);
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
index 28608bb..629ac67 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
@@ -18,7 +18,6 @@
 
 import android.net.InetAddresses.parseNumericAddress
 import android.net.LinkAddress
-import android.net.nsd.NsdManager
 import android.net.nsd.NsdServiceInfo
 import android.os.Build
 import android.os.HandlerThread
@@ -55,6 +54,7 @@
 import org.mockito.Mockito.never
 import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
+import org.mockito.Mockito.inOrder
 
 private const val LOG_TAG = "testlogtag"
 private const val TIMEOUT_MS = 10_000L
@@ -65,6 +65,7 @@
 
 private const val TEST_SERVICE_ID_1 = 42
 private const val TEST_SERVICE_ID_DUPLICATE = 43
+private const val TEST_SERVICE_ID_2 = 44
 private val TEST_SERVICE_1 = NsdServiceInfo().apply {
     serviceType = "_testservice._tcp"
     serviceName = "MyTestService"
@@ -78,6 +79,13 @@
     port = 12345
 }
 
+private val TEST_SERVICE_1_CUSTOM_HOST = NsdServiceInfo().apply {
+    serviceType = "_testservice._tcp"
+    serviceName = "MyTestService"
+    hostname = "MyTestHost"
+    port = 12345
+}
+
 @RunWith(DevSdkIgnoreRunner::class)
 @IgnoreUpTo(Build.VERSION_CODES.S_V2)
 class MdnsInterfaceAdvertiserTest {
@@ -179,7 +187,94 @@
         // Exit announcements finish: the advertiser has no left service and destroys itself
         announceCb.onFinished(testExitInfo)
         thread.waitForIdle(TIMEOUT_MS)
-        verify(cb).onDestroyed(socket)
+        verify(cb).onAllServicesRemoved(socket)
+    }
+
+    @Test
+    fun testAddRemoveServiceWithCustomHost_restartProbingForProbingServices() {
+        val customHost1 = NsdServiceInfo().apply {
+            hostname = "MyTestHost"
+            hostAddresses = listOf(
+                    parseNumericAddress("192.0.2.23"),
+                    parseNumericAddress("2001:db8::1"))
+        }
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, customHost1)
+        addServiceAndFinishProbing(TEST_SERVICE_ID_2, TEST_SERVICE_1_CUSTOM_HOST)
+        repository.setServiceProbing(TEST_SERVICE_ID_2)
+        val probingInfo = mock(ProbingInfo::class.java)
+        doReturn("MyTestHost")
+                .`when`(repository).getHostnameForServiceId(TEST_SERVICE_ID_1)
+        doReturn(TEST_SERVICE_ID_2).`when`(probingInfo).serviceId
+        doReturn(listOf(probingInfo))
+                .`when`(repository).restartProbingForHostname("MyTestHost")
+        val inOrder = inOrder(prober, announcer)
+
+        // Remove the custom host: the custom host's announcement is stopped and the probing
+        // services which use that hostname are re-announced.
+        advertiser.removeService(TEST_SERVICE_ID_1)
+
+        inOrder.verify(prober).stop(TEST_SERVICE_ID_1)
+        inOrder.verify(announcer).stop(TEST_SERVICE_ID_1)
+        inOrder.verify(prober).stop(TEST_SERVICE_ID_2)
+        inOrder.verify(prober).startProbing(probingInfo)
+    }
+
+    @Test
+    fun testAddRemoveServiceWithCustomHost_restartAnnouncingForProbedServices() {
+        val customHost1 = NsdServiceInfo().apply {
+            hostname = "MyTestHost"
+            hostAddresses = listOf(
+                    parseNumericAddress("192.0.2.23"),
+                    parseNumericAddress("2001:db8::1"))
+        }
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, customHost1)
+        val announcementInfo =
+                addServiceAndFinishProbing(TEST_SERVICE_ID_2, TEST_SERVICE_1_CUSTOM_HOST)
+        doReturn("MyTestHost")
+                .`when`(repository).getHostnameForServiceId(TEST_SERVICE_ID_1)
+        doReturn(listOf(announcementInfo))
+                .`when`(repository).restartAnnouncingForHostname("MyTestHost")
+        val inOrder = inOrder(prober, announcer)
+
+        // Remove the custom host: the custom host's announcement is stopped and the probed services
+        // which use that hostname are re-announced.
+        advertiser.removeService(TEST_SERVICE_ID_1)
+
+        inOrder.verify(prober).stop(TEST_SERVICE_ID_1)
+        inOrder.verify(announcer).stop(TEST_SERVICE_ID_1)
+        inOrder.verify(announcer).stop(TEST_SERVICE_ID_2)
+        inOrder.verify(announcer).startSending(TEST_SERVICE_ID_2, announcementInfo, 0L /* initialDelayMs */)
+    }
+
+    @Test
+    fun testAddMoreAddressesForCustomHost_restartAnnouncingForProbedServices() {
+        val customHost = NsdServiceInfo().apply {
+            hostname = "MyTestHost"
+            hostAddresses = listOf(
+                parseNumericAddress("192.0.2.23"),
+                parseNumericAddress("2001:db8::1"))
+        }
+        doReturn("MyTestHost")
+            .`when`(repository).getHostnameForServiceId(TEST_SERVICE_ID_1)
+        doReturn("MyTestHost")
+            .`when`(repository).getHostnameForServiceId(TEST_SERVICE_ID_2)
+        val announcementInfo1 =
+            addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1_CUSTOM_HOST)
+
+        val probingInfo2 = addServiceAndStartProbing(TEST_SERVICE_ID_2, customHost)
+        val announcementInfo2 = AnnouncementInfo(TEST_SERVICE_ID_2, emptyList(), emptyList())
+        doReturn(announcementInfo2).`when`(repository).onProbingSucceeded(probingInfo2)
+        doReturn(listOf(announcementInfo1, announcementInfo2))
+            .`when`(repository).restartAnnouncingForHostname("MyTestHost")
+        probeCb.onFinished(probingInfo2)
+
+        val inOrder = inOrder(prober, announcer)
+
+        inOrder.verify(announcer)
+            .startSending(TEST_SERVICE_ID_2, announcementInfo2, 0L /* initialDelayMs */)
+        inOrder.verify(announcer).stop(TEST_SERVICE_ID_1)
+        inOrder.verify(announcer)
+            .startSending(TEST_SERVICE_ID_1, announcementInfo1, 0L /* initialDelayMs */)
     }
 
     @Test
@@ -422,8 +517,8 @@
         verify(prober, never()).startProbing(any())
     }
 
-    private fun addServiceAndFinishProbing(serviceId: Int, serviceInfo: NsdServiceInfo):
-            AnnouncementInfo {
+    private fun addServiceAndStartProbing(serviceId: Int, serviceInfo: NsdServiceInfo):
+            ProbingInfo {
         val testProbingInfo = mock(ProbingInfo::class.java)
         doReturn(serviceId).`when`(testProbingInfo).serviceId
         doReturn(testProbingInfo).`when`(repository).setServiceProbing(serviceId)
@@ -432,8 +527,15 @@
         verify(repository).addService(serviceId, serviceInfo, null /* ttl */)
         verify(prober).startProbing(testProbingInfo)
 
+        return testProbingInfo
+    }
+
+    private fun addServiceAndFinishProbing(serviceId: Int, serviceInfo: NsdServiceInfo):
+            AnnouncementInfo {
+        val testProbingInfo = addServiceAndStartProbing(serviceId, serviceInfo)
+
         // Simulate probing success: continues to announcing
-        val testAnnouncementInfo = mock(AnnouncementInfo::class.java)
+        val testAnnouncementInfo = AnnouncementInfo(serviceId, emptyList(), emptyList())
         doReturn(testAnnouncementInfo).`when`(repository).onProbingSucceeded(testProbingInfo)
         probeCb.onFinished(testProbingInfo)
         return testAnnouncementInfo
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
index 9474464..fb3d183 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
@@ -23,6 +23,7 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.eq;
+import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.timeout;
@@ -47,6 +48,7 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
+import org.mockito.InOrder;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -55,6 +57,7 @@
 import java.net.DatagramPacket;
 import java.net.NetworkInterface;
 import java.net.SocketException;
+import java.util.ArrayList;
 import java.util.List;
 
 @RunWith(DevSdkIgnoreRunner.class)
@@ -154,7 +157,7 @@
         verify(mSocketCreationCallback).onSocketCreated(tetherSocketKey2);
 
         // Send packet to IPv4 with mSocketKey and verify sending has been called.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mSocketKey,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), mSocketKey,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket).send(ipv4Packet);
@@ -162,7 +165,7 @@
         verify(tetherIfaceSock2, never()).send(any());
 
         // Send packet to IPv4 with onlyUseIpv6OnIpv6OnlyNetworks = true, the packet will be sent.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mSocketKey,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), mSocketKey,
                 true /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, times(2)).send(ipv4Packet);
@@ -170,7 +173,7 @@
         verify(tetherIfaceSock2, never()).send(any());
 
         // Send packet to IPv6 with tetherSocketKey1 and verify sending has been called.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv6Packet, tetherSocketKey1,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv6Packet), tetherSocketKey1,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, never()).send(ipv6Packet);
@@ -180,7 +183,7 @@
         // Send packet to IPv6 with onlyUseIpv6OnIpv6OnlyNetworks = true, the packet will not be
         // sent. Therefore, the tetherIfaceSock1.send() and tetherIfaceSock2.send() are still be
         // called once.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv6Packet, tetherSocketKey1,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv6Packet), tetherSocketKey1,
                 true /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, never()).send(ipv6Packet);
@@ -266,7 +269,7 @@
         verify(mSocketCreationCallback).onSocketCreated(socketKey3);
 
         // Send IPv4 packet on the mSocketKey and verify sending has been called.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mSocketKey,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), mSocketKey,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket).send(ipv4Packet);
@@ -295,7 +298,7 @@
         verify(socketCreationCb2).onSocketCreated(socketKey3);
 
         // Send IPv4 packet on socket2 and verify sending to the socket2 only.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, socketKey2,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), socketKey2,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         // ipv4Packet still sent only once on mSocket: times(1) matches the packet sent earlier on
@@ -309,7 +312,7 @@
         verify(mProvider, timeout(DEFAULT_TIMEOUT)).unrequestSocket(callback2);
 
         // Send IPv4 packet again and verify it's still sent a second time
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, socketKey2,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), socketKey2,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(socket2, times(2)).send(ipv4Packet);
@@ -320,7 +323,7 @@
         verify(mProvider, timeout(DEFAULT_TIMEOUT)).unrequestSocket(callback);
 
         // Send IPv4 packet and verify no more sending.
-        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mSocketKey,
+        mSocketClient.sendPacketRequestingMulticastResponse(List.of(ipv4Packet), mSocketKey,
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, times(1)).send(ipv4Packet);
@@ -407,4 +410,31 @@
         verify(creationCallback3).onSocketDestroyed(mSocketKey);
         verify(creationCallback3, never()).onSocketDestroyed(socketKey2);
     }
+
+    @Test
+    public void testSendPacketWithMultipleDatagramPacket() throws IOException {
+        final SocketCallback callback = expectSocketCallback();
+        final List<DatagramPacket> packets = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            packets.add(new DatagramPacket(new byte[10 + i] /* buff */, 0 /* offset */,
+                    10 + i /* length */, MdnsConstants.IPV4_SOCKET_ADDR));
+        }
+        doReturn(true).when(mSocket).hasJoinedIpv4();
+        doReturn(true).when(mSocket).hasJoinedIpv6();
+        doReturn(createEmptyNetworkInterface()).when(mSocket).getInterface();
+
+        // Notify socket created
+        callback.onSocketCreated(mSocketKey, mSocket, List.of());
+        verify(mSocketCreationCallback).onSocketCreated(mSocketKey);
+
+        // Send packets to IPv4 with mSocketKey then verify sending has been called and the
+        // sequence is correct.
+        mSocketClient.sendPacketRequestingMulticastResponse(packets, mSocketKey,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
+        InOrder inOrder = inOrder(mSocket);
+        for (int i = 0; i < 10; i++) {
+            inOrder.verify(mSocket).send(packets.get(i));
+        }
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
index 8d1dff6..2cb97c9 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
@@ -21,11 +21,13 @@
 import android.net.nsd.NsdServiceInfo
 import android.os.Build
 import android.os.HandlerThread
+import com.android.net.module.util.HexDump.hexStringToByteArray
 import com.android.server.connectivity.mdns.MdnsAnnouncer.AnnouncementInfo
 import com.android.server.connectivity.mdns.MdnsInterfaceAdvertiser.CONFLICT_HOST
 import com.android.server.connectivity.mdns.MdnsInterfaceAdvertiser.CONFLICT_SERVICE
 import com.android.server.connectivity.mdns.MdnsRecord.TYPE_A
 import com.android.server.connectivity.mdns.MdnsRecord.TYPE_AAAA
+import com.android.server.connectivity.mdns.MdnsRecord.TYPE_KEY
 import com.android.server.connectivity.mdns.MdnsRecord.TYPE_PTR
 import com.android.server.connectivity.mdns.MdnsRecord.TYPE_SRV
 import com.android.server.connectivity.mdns.MdnsRecord.TYPE_TXT
@@ -38,6 +40,7 @@
 import java.net.InetSocketAddress
 import java.net.NetworkInterface
 import java.util.Collections
+import java.time.Duration
 import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 import kotlin.test.assertFailsWith
@@ -111,6 +114,28 @@
     port = TEST_PORT
 }
 
+private val TEST_SERVICE_CUSTOM_HOST_NO_ADDRESSES = NsdServiceInfo().apply {
+    hostname = "TestHost"
+    hostAddresses = listOf()
+    serviceType = "_testservice._tcp"
+    serviceName = "TestService"
+    port = TEST_PORT
+}
+
+private val TEST_PUBLIC_KEY = hexStringToByteArray(
+        "0201030dc141d0637960b98cbc12cfca"
+                + "221d2879dac26ee5b460e9007c992e19"
+                + "02d897c391b03764d448f7d0c772fdb0"
+                + "3b1d9d6d52ff8886769e8e2362513565"
+                + "270962d3")
+
+private val TEST_PUBLIC_KEY_2 = hexStringToByteArray(
+        "0201030dc141d0637960b98cbc12cfca"
+                + "221d2879dac26ee5b460e9007c992e19"
+                + "02d897c391b03764d448f7d0c772fdb0"
+                + "3b1d9d6d52ff8886769e8e2362513565"
+                + "270962d4")
+
 @RunWith(DevSdkIgnoreRunner::class)
 @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
 class MdnsRecordRepositoryTest {
@@ -118,10 +143,23 @@
     private val deps = object : Dependencies() {
         override fun getInterfaceInetAddresses(iface: NetworkInterface) =
                 Collections.enumeration(TEST_ADDRESSES.map { it.address })
+
+        override fun elapsedRealTime() = now
+
+        fun elapse(duration: Long) {
+            now += duration
+        }
+
+        fun resetElapsedRealTime() {
+            now = 100
+        }
+
+        var now: Long = 100
     }
 
     @Before
     fun setUp() {
+        deps.resetElapsedRealTime();
         thread.start()
     }
 
@@ -146,7 +184,7 @@
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
         assertEquals(0, repository.servicesCount)
         assertEquals(-1,
-                repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1, null /* ttl */))
+                repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1, Duration.ofSeconds(50)))
         assertEquals(1, repository.servicesCount)
 
         val probingInfo = repository.setServiceProbing(TEST_SERVICE_ID_1)
@@ -169,7 +207,7 @@
         assertEquals(MdnsServiceRecord(expectedName,
                 0L /* receiptTimeMillis */,
                 false /* cacheFlush */,
-                SHORT_TTL /* ttlMillis */,
+                50_000L /* ttlMillis */,
                 0 /* servicePriority */, 0 /* serviceWeight */,
                 TEST_PORT, TEST_HOSTNAME), packet.authorityRecords[0])
 
@@ -559,6 +597,7 @@
             TYPE_PTR -> return MdnsPointerRecord(name, false /* isUnicast */)
             TYPE_SRV -> return MdnsServiceRecord(name, false /* isUnicast */)
             TYPE_TXT -> return MdnsTextRecord(name, false /* isUnicast */)
+            TYPE_KEY -> return MdnsKeyRecord(name, false /* isUnicast */)
             TYPE_A, TYPE_AAAA -> return MdnsInetAddressRecord(name, type, false /* isUnicast */)
             else -> fail("Unexpected question type: $type")
         }
@@ -886,6 +925,159 @@
     }
 
     @Test
+    fun testGetReply_keyQuestionForServiceName_returnsKeyRecord() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService1"
+            port = TEST_PORT
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_2, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService2"
+            port = 0 // No SRV RR
+            publicKey = TEST_PUBLIC_KEY
+        })
+        val src = InetSocketAddress(parseNumericAddress("fe80::123"), 5353)
+        val serviceName1 = arrayOf("MyTestService1", "_testservice", "_tcp", "local")
+        val serviceName2 = arrayOf("MyTestService2", "_testservice", "_tcp", "local")
+
+        val query1 = makeQuery(TYPE_KEY to serviceName1)
+        val reply1 = repository.getReply(query1, src)
+
+        assertNotNull(reply1)
+        assertEquals(listOf(MdnsKeyRecord(serviceName1,
+                0, false, LONG_TTL, TEST_PUBLIC_KEY)),
+                reply1.answers)
+        assertEquals(listOf(),
+                reply1.additionalAnswers)
+
+        val query2 = makeQuery(TYPE_KEY to serviceName2)
+        val reply2 = repository.getReply(query2, src)
+
+        assertNotNull(reply2)
+        assertEquals(listOf(MdnsKeyRecord(serviceName2,
+                0, false, LONG_TTL, TEST_PUBLIC_KEY)),
+                reply2.answers)
+        assertEquals(listOf(MdnsNsecRecord(serviceName2,
+                0L, true, SHORT_TTL,
+                serviceName2 /* nextDomain */,
+                intArrayOf(TYPE_KEY))),
+                reply2.additionalAnswers)
+    }
+
+    @Test
+    fun testGetReply_keyQuestionForHostname_returnsKeyRecord() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost1"
+            hostAddresses = listOf(
+                    parseNumericAddress("2001:db8::1"),
+                    parseNumericAddress("2001:db8::2"))
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_2, NsdServiceInfo().apply {
+            hostname = "MyHost2"
+            hostAddresses = listOf() // No address records
+            publicKey = TEST_PUBLIC_KEY
+        })
+        val src = InetSocketAddress(parseNumericAddress("fe80::123"), 5353)
+        val hostname1 = arrayOf("MyHost1", "local")
+        val hostname2 = arrayOf("MyHost2", "local")
+
+        val query1 = makeQuery(TYPE_KEY to hostname1)
+        val reply1 = repository.getReply(query1, src)
+
+        assertNotNull(reply1)
+        assertEquals(listOf(MdnsKeyRecord(hostname1,
+                0, false, LONG_TTL, TEST_PUBLIC_KEY)),
+                reply1.answers)
+        assertEquals(listOf(),
+                reply1.additionalAnswers)
+
+        val query2 = makeQuery(TYPE_KEY to hostname2)
+        val reply2 = repository.getReply(query2, src)
+
+        assertNotNull(reply2)
+        assertEquals(listOf(MdnsKeyRecord(hostname2,
+                0, false, LONG_TTL, TEST_PUBLIC_KEY)),
+                reply2.answers)
+        assertEquals(listOf(MdnsNsecRecord(hostname2, 0L, true, SHORT_TTL,
+                hostname2 /* nextDomain */,
+                intArrayOf(TYPE_KEY))),
+                reply2.additionalAnswers)
+    }
+
+    @Test
+    fun testGetReply_keyRecordForHostRemoved_noAnswertoKeyQuestion() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost1"
+            hostAddresses = listOf(
+                    parseNumericAddress("2001:db8::1"),
+                    parseNumericAddress("2001:db8::2"))
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_2, NsdServiceInfo().apply {
+            hostname = "MyHost2"
+            hostAddresses = listOf() // No address records
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.removeService(TEST_SERVICE_ID_1)
+        repository.removeService(TEST_SERVICE_ID_2)
+        val src = InetSocketAddress(parseNumericAddress("fe80::123"), 5353)
+        val hostname1 = arrayOf("MyHost1", "local")
+        val hostname2 = arrayOf("MyHost2", "local")
+
+        val query1 = makeQuery(TYPE_KEY to hostname1)
+        val reply1 = repository.getReply(query1, src)
+
+        assertNull(reply1)
+
+        val query2 = makeQuery(TYPE_KEY to hostname2)
+        val reply2 = repository.getReply(query2, src)
+
+        assertNull(reply2)
+    }
+
+    @Test
+    fun testGetReply_keyRecordForServiceRemoved_noAnswertoKeyQuestion() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService1"
+            port = TEST_PORT
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_2, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService2"
+            port = 0 // No SRV RR
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.removeService(TEST_SERVICE_ID_1)
+        repository.removeService(TEST_SERVICE_ID_2)
+        val src = InetSocketAddress(parseNumericAddress("fe80::123"), 5353)
+        val serviceName1 = arrayOf("MyTestService1", "_testservice", "_tcp", "local")
+        val serviceName2 = arrayOf("MyTestService2", "_testservice", "_tcp", "local")
+
+        val query1 = makeQuery(TYPE_KEY to serviceName1)
+        val reply1 = repository.getReply(query1, src)
+
+        assertNull(reply1)
+
+        val query2 = makeQuery(TYPE_KEY to serviceName2)
+        val reply2 = repository.getReply(query2, src)
+
+        assertNull(reply2)
+    }
+
+    @Test
     fun testGetReply_customHostRemoved_noAnswerToAAAAQuestion() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
         repository.initWithService(
@@ -989,6 +1181,102 @@
     }
 
     @Test
+    fun testGetReply_ipv4AndIpv6Queries_ipv4AndIpv6Replies() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1, setOf(TEST_SUBTYPE))
+        val query = makeQuery(TYPE_PTR to arrayOf("_testservice", "_tcp", "local"))
+
+        val srcIpv4 = InetSocketAddress(parseNumericAddress("192.0.2.123"), 5353)
+        val replyIpv4 = repository.getReply(query, srcIpv4)
+        val srcIpv6 = InetSocketAddress(parseNumericAddress("2001:db8::123"), 5353)
+        val replyIpv6 = repository.getReply(query, srcIpv6)
+
+        assertNotNull(replyIpv4)
+        assertEquals(MdnsConstants.getMdnsIPv4Address(), replyIpv4.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, replyIpv4.destination.port)
+        assertNotNull(replyIpv6)
+        assertEquals(MdnsConstants.getMdnsIPv6Address(), replyIpv6.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, replyIpv6.destination.port)
+    }
+
+    @Test
+    fun testGetReply_twoIpv4QueriesInOneSecond_theSecondReplyIsThrottled() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1, setOf(TEST_SUBTYPE))
+        val query = makeQuery(TYPE_PTR to arrayOf("_testservice", "_tcp", "local"))
+
+        val srcIpv4 = InetSocketAddress(parseNumericAddress("192.0.2.123"), 5353)
+        val firstReplyIpv4 = repository.getReply(query, srcIpv4)
+        deps.elapse(500L)
+        val secondReply = repository.getReply(query, srcIpv4)
+
+        assertNotNull(firstReplyIpv4)
+        assertEquals(MdnsConstants.getMdnsIPv4Address(), firstReplyIpv4.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, firstReplyIpv4.destination.port)
+        assertNull(secondReply)
+    }
+
+
+    @Test
+    fun testGetReply_twoIpv6QueriesInOneSecond_theSecondReplyIsThrottled() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1, setOf(TEST_SUBTYPE))
+        val query = makeQuery(TYPE_PTR to arrayOf("_testservice", "_tcp", "local"))
+
+        val srcIpv6 = InetSocketAddress(parseNumericAddress("2001:db8::123"), 5353)
+        val firstReplyIpv6 = repository.getReply(query, srcIpv6)
+        deps.elapse(500L)
+        val secondReply = repository.getReply(query, srcIpv6)
+
+        assertNotNull(firstReplyIpv6)
+        assertEquals(MdnsConstants.getMdnsIPv6Address(), firstReplyIpv6.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, firstReplyIpv6.destination.port)
+        assertNull(secondReply)
+    }
+
+    @Test
+    fun testGetReply_twoIpv4QueriesInMoreThanOneSecond_repliesAreNotThrottled() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1, setOf(TEST_SUBTYPE))
+        val query = makeQuery(TYPE_PTR to arrayOf("_testservice", "_tcp", "local"))
+
+        val srcIpv4 = InetSocketAddress(parseNumericAddress("192.0.2.123"), 5353)
+        val firstReplyIpv4 = repository.getReply(query, srcIpv4)
+        // The longest possible interval that may make the reply throttled is
+        // 1000 (MIN_MULTICAST_REPLY_INTERVAL_MS) + 120 (delay for shared name) = 1120
+        deps.elapse(1121L)
+        val secondReplyIpv4 = repository.getReply(query, srcIpv4)
+
+        assertNotNull(firstReplyIpv4)
+        assertEquals(MdnsConstants.getMdnsIPv4Address(), firstReplyIpv4.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, firstReplyIpv4.destination.port)
+        assertNotNull(secondReplyIpv4)
+        assertEquals(MdnsConstants.getMdnsIPv4Address(), secondReplyIpv4.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, secondReplyIpv4.destination.port)
+    }
+
+    @Test
+    fun testGetReply_twoIpv6QueriesInMoreThanOneSecond_repliesAreNotThrottled() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1, setOf(TEST_SUBTYPE))
+        val query = makeQuery(TYPE_PTR to arrayOf("_testservice", "_tcp", "local"))
+
+        val srcIpv6 = InetSocketAddress(parseNumericAddress("2001:db8::123"), 5353)
+        val firstReplyIpv6 = repository.getReply(query, srcIpv6)
+        // The longest possible interval that may make the reply throttled is
+        // 1000 (MIN_MULTICAST_REPLY_INTERVAL_MS) + 120 (delay for shared name) = 1120
+        deps.elapse(1121L)
+        val secondReplyIpv6 = repository.getReply(query, srcIpv6)
+
+        assertNotNull(firstReplyIpv6)
+        assertEquals(MdnsConstants.getMdnsIPv6Address(), firstReplyIpv6.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, firstReplyIpv6.destination.port)
+        assertNotNull(secondReplyIpv6)
+        assertEquals(MdnsConstants.getMdnsIPv6Address(), secondReplyIpv6.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, secondReplyIpv6.destination.port)
+    }
+
+    @Test
     fun testGetConflictingServices() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
         repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1, null /* ttl */)
@@ -1103,8 +1391,8 @@
     @Test
     fun testGetConflictingServices_customHostsReplyHasFewerAddressesThanUs_noConflict() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
-        repository.addService(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1, null /* ttl */)
-        repository.addService(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2, null /* ttl */)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2)
 
         val packet = MdnsPacket(
                 0, /* flags */
@@ -1122,10 +1410,30 @@
     }
 
     @Test
-    fun testGetConflictingServices_customHostsReplyHasIdenticalHosts_noConflict() {
+    fun testGetConflictingServices_customHostsReplyHasSameNameRecord_conflictDuringProbing() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
         repository.addService(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1, null /* ttl */)
-        repository.addService(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2, null /* ttl */)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2)
+
+        val packet = MdnsPacket(
+            0, /* flags */
+            emptyList(), /* questions */
+            listOf(MdnsKeyRecord(arrayOf("TestHost", "local"),
+                    0L /* receiptTimeMillis */, true /* cacheFlush */,
+                    0L /* ttlMillis */, TEST_PUBLIC_KEY),
+            ) /* answers */,
+            emptyList() /* authorityRecords */,
+            emptyList() /* additionalRecords */)
+
+        assertEquals(mapOf(TEST_CUSTOM_HOST_ID_1 to CONFLICT_HOST),
+            repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_customHostsReplyHasIdenticalHosts_noConflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2)
 
         val packet = MdnsPacket(
                 0, /* flags */
@@ -1149,8 +1457,8 @@
     @Test
     fun testGetConflictingServices_customHostsCaseInsensitiveReplyHasIdenticalHosts_noConflict() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
-        repository.addService(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1, null /* ttl */)
-        repository.addService(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2, null /* ttl */)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1)
+        repository.addServiceAndFinishProbing(TEST_CUSTOM_HOST_ID_2, TEST_CUSTOM_HOST_2)
 
         val packet = MdnsPacket(
                 0, /* flags */
@@ -1171,6 +1479,190 @@
     }
 
     @Test
+    fun testGetConflictingServices_identicalKeyRecordsForService_noConflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addService(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService"
+            port = TEST_PORT
+            publicKey = TEST_PUBLIC_KEY
+        }, null /* ttl */)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsKeyRecord(
+                                arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis,
+                                TEST_PUBLIC_KEY)
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(emptyMap(),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_differentKeyRecordsForService_conflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addService(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService"
+            port = TEST_PORT
+            publicKey = TEST_PUBLIC_KEY
+        }, null /* null */)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsKeyRecord(
+                                arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis,
+                                TEST_PUBLIC_KEY_2)
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(mapOf(TEST_SERVICE_ID_1 to CONFLICT_SERVICE),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_identicalKeyRecordsForHost_noConflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost"
+            hostAddresses = listOf(
+                parseNumericAddress("2001:db8::1"),
+                parseNumericAddress("2001:db8::2")
+            )
+            publicKey = TEST_PUBLIC_KEY
+        })
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsKeyRecord(
+                                arrayOf("MyHost", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis,
+                                TEST_PUBLIC_KEY)
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(emptyMap(),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_keyForCustomHostReplySameRecordName_conflictDuringProbing() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addService(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost"
+            publicKey = TEST_PUBLIC_KEY
+        }, null /* ttl */)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+            0 /* flags */,
+            emptyList() /* questions */,
+            listOf(MdnsInetAddressRecord(arrayOf("MyHost", "local"),
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    otherTtlMillis,
+                    parseNumericAddress("192.168.2.111"))
+            ) /* answers */,
+            emptyList() /* authorityRecords */,
+            emptyList() /* additionalRecords */
+        )
+
+        assertEquals(mapOf(TEST_SERVICE_ID_1 to CONFLICT_HOST),
+            repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_differentKeyRecordsForHost_conflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addService(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost"
+            hostAddresses = listOf(
+                    parseNumericAddress("2001:db8::1"),
+                    parseNumericAddress("2001:db8::2"))
+            publicKey = TEST_PUBLIC_KEY
+        }, null /* ttl */)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsKeyRecord(
+                                arrayOf("MyHost", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis,
+                                TEST_PUBLIC_KEY_2)
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(mapOf(TEST_SERVICE_ID_1 to CONFLICT_HOST),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_multipleRegistrationsForHostKey_noConflict() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+
+        repository.addServiceAndFinishProbing(TEST_SERVICE_ID_1, NsdServiceInfo().apply {
+            hostname = "MyHost"
+            hostAddresses = listOf(
+                parseNumericAddress("2001:db8::1"),
+                parseNumericAddress("2001:db8::2"))
+            publicKey = TEST_PUBLIC_KEY
+        })
+        repository.addService(TEST_SERVICE_ID_2, NsdServiceInfo().apply {
+            serviceType = "_testservice._tcp"
+            serviceName = "MyTestService"
+            port = TEST_PORT
+            hostname = "MyHost"
+            publicKey = TEST_PUBLIC_KEY
+        }, null /* ttl */)
+
+        // Although there's a KEY RR in the second registration being probed, it shouldn't conflict
+        // with an address record which is from a probed registration in the repository.
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+            0 /* flags */,
+            emptyList() /* questions */,
+            listOf(
+                MdnsInetAddressRecord(
+                    arrayOf("MyHost", "local"),
+                    0L /* receiptTimeMillis */, true /* cacheFlush */,
+                    otherTtlMillis,
+                    parseNumericAddress("2001:db8::1"))
+            ) /* answers */,
+            emptyList() /* authorityRecords */,
+            emptyList() /* additionalRecords */)
+
+        assertEquals(mapOf(), repository.getConflictingServices(packet))
+    }
+
+    @Test
     fun testGetConflictingServices_IdenticalService() {
         val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
         repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1, null /* ttl */)
@@ -1675,6 +2167,127 @@
         assertEquals(0, reply.additionalAnswers.size)
         assertEquals(knownAnswers, reply.knownAnswers)
     }
+
+    @Test
+    fun testRestartProbingForHostname() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1,
+                setOf(TEST_SUBTYPE, TEST_SUBTYPE2))
+        repository.addService(TEST_SERVICE_CUSTOM_HOST_ID_1,
+                TEST_SERVICE_CUSTOM_HOST_NO_ADDRESSES, null)
+        repository.setServiceProbing(TEST_SERVICE_CUSTOM_HOST_ID_1)
+        repository.removeService(TEST_CUSTOM_HOST_ID_1)
+
+        val probingInfos = repository.restartProbingForHostname("TestHost")
+
+        assertEquals(1, probingInfos.size)
+        val probingInfo = probingInfos.get(0)
+        assertEquals(TEST_SERVICE_CUSTOM_HOST_ID_1, probingInfo.serviceId)
+        val packet = probingInfo.getPacket(0)
+        assertEquals(0, packet.transactionId)
+        assertEquals(MdnsConstants.FLAGS_QUERY, packet.flags)
+        assertEquals(0, packet.answers.size)
+        assertEquals(0, packet.additionalRecords.size)
+        assertEquals(1, packet.questions.size)
+        val serviceName = arrayOf("TestService", "_testservice", "_tcp", "local")
+        assertEquals(MdnsAnyRecord(serviceName, false /* unicast */), packet.questions[0])
+        assertThat(packet.authorityRecords).containsExactly(
+                MdnsServiceRecord(
+                        serviceName,
+                        0L /* receiptTimeMillis */,
+                        false /* cacheFlush */,
+                        SHORT_TTL /* ttlMillis */,
+                        0 /* servicePriority */,
+                        0 /* serviceWeight */,
+                        TEST_PORT,
+                        TEST_CUSTOM_HOST_1_NAME))
+    }
+
+    @Test
+    fun testRestartAnnouncingForHostname() {
+        val repository = MdnsRecordRepository(thread.looper, deps, TEST_HOSTNAME, makeFlags())
+        repository.initWithService(TEST_CUSTOM_HOST_ID_1, TEST_CUSTOM_HOST_1,
+                setOf(TEST_SUBTYPE, TEST_SUBTYPE2))
+        repository.addServiceAndFinishProbing(TEST_SERVICE_CUSTOM_HOST_ID_1,
+                TEST_SERVICE_CUSTOM_HOST_NO_ADDRESSES)
+        repository.removeService(TEST_CUSTOM_HOST_ID_1)
+
+        val announcementInfos = repository.restartAnnouncingForHostname("TestHost")
+
+        assertEquals(1, announcementInfos.size)
+        val announcementInfo = announcementInfos.get(0)
+        assertEquals(TEST_SERVICE_CUSTOM_HOST_ID_1, announcementInfo.serviceId)
+        val packet = announcementInfo.getPacket(0)
+        assertEquals(0, packet.transactionId)
+        assertEquals(0x8400 /* response, authoritative */, packet.flags)
+        assertEquals(0, packet.questions.size)
+        assertEquals(0, packet.authorityRecords.size)
+        val serviceName = arrayOf("TestService", "_testservice", "_tcp", "local")
+        val serviceType = arrayOf("_testservice", "_tcp", "local")
+        val v4AddrRev = getReverseDnsAddress(TEST_ADDRESSES[0].address)
+        val v6Addr1Rev = getReverseDnsAddress(TEST_ADDRESSES[1].address)
+        val v6Addr2Rev = getReverseDnsAddress(TEST_ADDRESSES[2].address)
+        assertThat(packet.answers).containsExactly(
+                MdnsPointerRecord(
+                        serviceType,
+                        0L /* receiptTimeMillis */,
+                        // Not a unique name owned by the announcer, so cacheFlush=false
+                        false /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        serviceName),
+                MdnsServiceRecord(
+                        serviceName,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        0 /* servicePriority */,
+                        0 /* serviceWeight */,
+                        TEST_PORT /* servicePort */,
+                        TEST_CUSTOM_HOST_1_NAME),
+                MdnsTextRecord(
+                        serviceName,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        emptyList() /* entries */),
+                MdnsPointerRecord(
+                        arrayOf("_services", "_dns-sd", "_udp", "local"),
+                        0L /* receiptTimeMillis */,
+                        false /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        serviceType))
+        assertThat(packet.additionalRecords).containsExactly(
+                MdnsNsecRecord(v4AddrRev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v4AddrRev,
+                        intArrayOf(TYPE_PTR)),
+                MdnsNsecRecord(TEST_HOSTNAME,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_HOSTNAME,
+                        intArrayOf(TYPE_A, TYPE_AAAA)),
+                MdnsNsecRecord(v6Addr1Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v6Addr1Rev,
+                        intArrayOf(TYPE_PTR)),
+                MdnsNsecRecord(v6Addr2Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v6Addr2Rev,
+                        intArrayOf(TYPE_PTR)),
+                MdnsNsecRecord(serviceName,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        serviceName,
+                        intArrayOf(TYPE_TXT, TYPE_SRV)))
+    }
 }
 
 private fun MdnsRecordRepository.initWithService(
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordTests.java
index 55c2846..63548c1 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordTests.java
@@ -16,11 +16,13 @@
 
 package com.android.server.connectivity.mdns;
 
+import static com.android.server.connectivity.mdns.MdnsConstants.QCLASS_INTERNET;
 import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThrows;
@@ -424,4 +426,92 @@
         assertEquals(new TextEntry("xyz", HexDump.hexStringToByteArray("FFEFDFCF")),
                 entries.get(2));
     }
+
+    @Test
+    public void testKeyRecord() throws IOException {
+        final byte[] dataIn =
+                HexDump.hexStringToByteArray(
+                        "09746573742d686f7374056c6f63616c"
+                                + "00001980010000000a00440201030dc1"
+                                + "41d0637960b98cbc12cfca221d2879da"
+                                + "c26ee5b460e9007c992e1902d897c391"
+                                + "b03764d448f7d0c772fdb03b1d9d6d52"
+                                + "ff8886769e8e2362513565270962d3");
+        final byte[] rData =
+                HexDump.hexStringToByteArray(
+                        "0201030dc141d0637960b98cbc12cfca"
+                                + "221d2879dac26ee5b460e9007c992e19"
+                                + "02d897c391b03764d448f7d0c772fdb0"
+                                + "3b1d9d6d52ff8886769e8e2362513565"
+                                + "270962d3");
+        assertNotNull(dataIn);
+        String dataInText = HexDump.dumpHexString(dataIn, 0, dataIn.length);
+
+        // Decode
+        DatagramPacket packet = new DatagramPacket(dataIn, dataIn.length);
+        MdnsPacketReader reader = new MdnsPacketReader(packet);
+
+        String[] name = reader.readLabels();
+        assertNotNull(name);
+        assertEquals(2, name.length);
+        String fqdn = MdnsRecord.labelsToString(name);
+        assertEquals("test-host.local", fqdn);
+
+        int type = reader.readUInt16();
+        assertEquals(MdnsRecord.TYPE_KEY, type);
+
+        MdnsKeyRecord keyRecord;
+
+        // MdnsKeyRecord(String[] name, MdnsPacketReader reader)
+        reader = new MdnsPacketReader(packet);
+        reader.readLabels(); // Skip labels
+        reader.readUInt16(); // Skip type
+        keyRecord = new MdnsKeyRecord(name, reader);
+        assertEquals(MdnsRecord.TYPE_KEY, keyRecord.getType());
+        assertTrue(keyRecord.getTtl() > 0); // Not a question so the TTL is greater than 0
+        assertTrue(keyRecord.getCacheFlush());
+        assertArrayEquals(new String[] {"test-host", "local"}, keyRecord.getName());
+        assertArrayEquals(rData, keyRecord.getRData());
+        assertNotEquals(rData, keyRecord.getRData()); // Uses a copy of the original RDATA
+        assertEquals(dataInText, toHex(keyRecord));
+
+        // MdnsKeyRecord(String[] name, MdnsPacketReader reader, boolean isQuestion)
+        reader = new MdnsPacketReader(packet);
+        reader.readLabels(); // Skip labels
+        reader.readUInt16(); // Skip type
+        keyRecord = new MdnsKeyRecord(name, reader, false /* isQuestion */);
+        assertEquals(MdnsRecord.TYPE_KEY, keyRecord.getType());
+        assertTrue(keyRecord.getTtl() > 0); // Not a question, so the TTL is greater than 0
+        assertTrue(keyRecord.getCacheFlush());
+        assertArrayEquals(new String[] {"test-host", "local"}, keyRecord.getName());
+        assertArrayEquals(rData, keyRecord.getRData());
+        assertNotEquals(rData, keyRecord.getRData()); // Uses a copy of the original RDATA
+
+        // MdnsKeyRecord(String[] name, boolean isUnicast)
+        keyRecord = new MdnsKeyRecord(name, false /* isUnicast */);
+        assertEquals(MdnsRecord.TYPE_KEY, keyRecord.getType());
+        assertEquals(0, keyRecord.getTtl());
+        assertEquals(QCLASS_INTERNET, keyRecord.getRecordClass());
+        assertFalse(keyRecord.getCacheFlush());
+        assertArrayEquals(new String[] {"test-host", "local"}, keyRecord.getName());
+        assertArrayEquals(null, keyRecord.getRData());
+
+        // MdnsKeyRecord(String[] name, long receiptTimeMillis, boolean cacheFlush, long ttlMillis,
+        // byte[] rData)
+        keyRecord =
+                new MdnsKeyRecord(
+                        name,
+                        10 /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        20_000 /* ttlMillis */,
+                        rData);
+        assertEquals(MdnsRecord.TYPE_KEY, keyRecord.getType());
+        assertEquals(10, keyRecord.getReceiptTime());
+        assertTrue(keyRecord.getCacheFlush());
+        assertEquals(20_000, keyRecord.getTtl());
+        assertEquals(QCLASS_INTERNET, keyRecord.getRecordClass());
+        assertArrayEquals(new String[] {"test-host", "local"}, keyRecord.getName());
+        assertArrayEquals(rData, keyRecord.getRData());
+        assertNotEquals(rData, keyRecord.getRData()); // Uses a copy of the original RDATA
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceInfoTest.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceInfoTest.java
index 8740e80..4ce8ba6 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceInfoTest.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceInfoTest.java
@@ -54,7 +54,8 @@
                         "192.168.1.1",
                         "2001::1",
                         List.of("vn=Google Inc.", "mn=Google Nest Hub Max"),
-                        /* textEntries= */ null);
+                        /* textEntries= */ null,
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertTrue(info.getAttributeByKey("vn").equals("Google Inc."));
         assertTrue(info.getAttributeByKey("mn").equals("Google Nest Hub Max"));
@@ -73,7 +74,8 @@
                         "2001::1",
                         /* textStrings= */ null,
                         List.of(MdnsServiceInfo.TextEntry.fromString("vn=Google Inc."),
-                                MdnsServiceInfo.TextEntry.fromString("mn=Google Nest Hub Max")));
+                                MdnsServiceInfo.TextEntry.fromString("mn=Google Nest Hub Max")),
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertTrue(info.getAttributeByKey("vn").equals("Google Inc."));
         assertTrue(info.getAttributeByKey("mn").equals("Google Nest Hub Max"));
@@ -93,7 +95,8 @@
                         List.of("vn=Alphabet Inc.", "mn=Google Nest Hub Max", "id=12345"),
                         List.of(
                                 MdnsServiceInfo.TextEntry.fromString("vn=Google Inc."),
-                                MdnsServiceInfo.TextEntry.fromString("mn=Google Nest Hub Max")));
+                                MdnsServiceInfo.TextEntry.fromString("mn=Google Nest Hub Max")),
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertEquals(Map.of("vn", "Google Inc.", "mn", "Google Nest Hub Max"),
                 info.getAttributes());
@@ -113,7 +116,8 @@
                         List.of("vn=Alphabet Inc.", "mn=Google Nest Hub Max", "id=12345"),
                         List.of(MdnsServiceInfo.TextEntry.fromString("vn=Google Inc."),
                                 MdnsServiceInfo.TextEntry.fromString("mn=Google Nest Hub Max"),
-                                MdnsServiceInfo.TextEntry.fromString("mn=Google WiFi Router")));
+                                MdnsServiceInfo.TextEntry.fromString("mn=Google WiFi Router")),
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertEquals(Map.of("vn", "Google Inc.", "mn", "Google Nest Hub Max"),
                 info.getAttributes());
@@ -131,7 +135,8 @@
                         "192.168.1.1",
                         "2001::1",
                         List.of("KEY=Value"),
-                        /* textEntries= */ null);
+                        /* textEntries= */ null,
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertEquals("Value", info.getAttributeByKey("key"));
         assertEquals("Value", info.getAttributeByKey("KEY"));
@@ -150,7 +155,9 @@
                         12345,
                         "192.168.1.1",
                         "2001::1",
-                        List.of());
+                        List.of(),
+                        /* textEntries= */ null,
+                        INTERFACE_INDEX_UNSPECIFIED);
 
         assertEquals(info.getInterfaceIndex(), INTERFACE_INDEX_UNSPECIFIED);
     }
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
index 09236b1..44fa55c 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
@@ -38,6 +38,7 @@
 import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doCallRealMethod;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.never;
@@ -117,8 +118,6 @@
     @Mock
     private MdnsServiceBrowserListener mockListenerTwo;
     @Mock
-    private MdnsPacketWriter mockPacketWriter;
-    @Mock
     private MdnsMultinetworkSocketClient mockSocketClient;
     @Mock
     private Network mockNetwork;
@@ -145,6 +144,7 @@
     private long latestDelayMs = 0;
     private Message delayMessage = null;
     private Handler realHandler = null;
+    private MdnsFeatureFlags featureFlags = MdnsFeatureFlags.newBuilder().build();
 
     @Before
     @SuppressWarnings("DoNotMock")
@@ -162,57 +162,59 @@
             expectedIPv6Packets[i] = new DatagramPacket(buf, 0 /* offset */, 5 /* length */,
                     MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT);
         }
-        when(mockPacketWriter.getPacket(IPV4_ADDRESS))
-                .thenReturn(expectedIPv4Packets[0])
-                .thenReturn(expectedIPv4Packets[1])
-                .thenReturn(expectedIPv4Packets[2])
-                .thenReturn(expectedIPv4Packets[3])
-                .thenReturn(expectedIPv4Packets[4])
-                .thenReturn(expectedIPv4Packets[5])
-                .thenReturn(expectedIPv4Packets[6])
-                .thenReturn(expectedIPv4Packets[7])
-                .thenReturn(expectedIPv4Packets[8])
-                .thenReturn(expectedIPv4Packets[9])
-                .thenReturn(expectedIPv4Packets[10])
-                .thenReturn(expectedIPv4Packets[11])
-                .thenReturn(expectedIPv4Packets[12])
-                .thenReturn(expectedIPv4Packets[13])
-                .thenReturn(expectedIPv4Packets[14])
-                .thenReturn(expectedIPv4Packets[15])
-                .thenReturn(expectedIPv4Packets[16])
-                .thenReturn(expectedIPv4Packets[17])
-                .thenReturn(expectedIPv4Packets[18])
-                .thenReturn(expectedIPv4Packets[19])
-                .thenReturn(expectedIPv4Packets[20])
-                .thenReturn(expectedIPv4Packets[21])
-                .thenReturn(expectedIPv4Packets[22])
-                .thenReturn(expectedIPv4Packets[23]);
+        when(mockDeps.getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), eq(IPV4_ADDRESS), anyBoolean()))
+                .thenReturn(List.of(expectedIPv4Packets[0]))
+                .thenReturn(List.of(expectedIPv4Packets[1]))
+                .thenReturn(List.of(expectedIPv4Packets[2]))
+                .thenReturn(List.of(expectedIPv4Packets[3]))
+                .thenReturn(List.of(expectedIPv4Packets[4]))
+                .thenReturn(List.of(expectedIPv4Packets[5]))
+                .thenReturn(List.of(expectedIPv4Packets[6]))
+                .thenReturn(List.of(expectedIPv4Packets[7]))
+                .thenReturn(List.of(expectedIPv4Packets[8]))
+                .thenReturn(List.of(expectedIPv4Packets[9]))
+                .thenReturn(List.of(expectedIPv4Packets[10]))
+                .thenReturn(List.of(expectedIPv4Packets[11]))
+                .thenReturn(List.of(expectedIPv4Packets[12]))
+                .thenReturn(List.of(expectedIPv4Packets[13]))
+                .thenReturn(List.of(expectedIPv4Packets[14]))
+                .thenReturn(List.of(expectedIPv4Packets[15]))
+                .thenReturn(List.of(expectedIPv4Packets[16]))
+                .thenReturn(List.of(expectedIPv4Packets[17]))
+                .thenReturn(List.of(expectedIPv4Packets[18]))
+                .thenReturn(List.of(expectedIPv4Packets[19]))
+                .thenReturn(List.of(expectedIPv4Packets[20]))
+                .thenReturn(List.of(expectedIPv4Packets[21]))
+                .thenReturn(List.of(expectedIPv4Packets[22]))
+                .thenReturn(List.of(expectedIPv4Packets[23]));
 
-        when(mockPacketWriter.getPacket(IPV6_ADDRESS))
-                .thenReturn(expectedIPv6Packets[0])
-                .thenReturn(expectedIPv6Packets[1])
-                .thenReturn(expectedIPv6Packets[2])
-                .thenReturn(expectedIPv6Packets[3])
-                .thenReturn(expectedIPv6Packets[4])
-                .thenReturn(expectedIPv6Packets[5])
-                .thenReturn(expectedIPv6Packets[6])
-                .thenReturn(expectedIPv6Packets[7])
-                .thenReturn(expectedIPv6Packets[8])
-                .thenReturn(expectedIPv6Packets[9])
-                .thenReturn(expectedIPv6Packets[10])
-                .thenReturn(expectedIPv6Packets[11])
-                .thenReturn(expectedIPv6Packets[12])
-                .thenReturn(expectedIPv6Packets[13])
-                .thenReturn(expectedIPv6Packets[14])
-                .thenReturn(expectedIPv6Packets[15])
-                .thenReturn(expectedIPv6Packets[16])
-                .thenReturn(expectedIPv6Packets[17])
-                .thenReturn(expectedIPv6Packets[18])
-                .thenReturn(expectedIPv6Packets[19])
-                .thenReturn(expectedIPv6Packets[20])
-                .thenReturn(expectedIPv6Packets[21])
-                .thenReturn(expectedIPv6Packets[22])
-                .thenReturn(expectedIPv6Packets[23]);
+        when(mockDeps.getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), eq(IPV6_ADDRESS), anyBoolean()))
+                .thenReturn(List.of(expectedIPv6Packets[0]))
+                .thenReturn(List.of(expectedIPv6Packets[1]))
+                .thenReturn(List.of(expectedIPv6Packets[2]))
+                .thenReturn(List.of(expectedIPv6Packets[3]))
+                .thenReturn(List.of(expectedIPv6Packets[4]))
+                .thenReturn(List.of(expectedIPv6Packets[5]))
+                .thenReturn(List.of(expectedIPv6Packets[6]))
+                .thenReturn(List.of(expectedIPv6Packets[7]))
+                .thenReturn(List.of(expectedIPv6Packets[8]))
+                .thenReturn(List.of(expectedIPv6Packets[9]))
+                .thenReturn(List.of(expectedIPv6Packets[10]))
+                .thenReturn(List.of(expectedIPv6Packets[11]))
+                .thenReturn(List.of(expectedIPv6Packets[12]))
+                .thenReturn(List.of(expectedIPv6Packets[13]))
+                .thenReturn(List.of(expectedIPv6Packets[14]))
+                .thenReturn(List.of(expectedIPv6Packets[15]))
+                .thenReturn(List.of(expectedIPv6Packets[16]))
+                .thenReturn(List.of(expectedIPv6Packets[17]))
+                .thenReturn(List.of(expectedIPv6Packets[18]))
+                .thenReturn(List.of(expectedIPv6Packets[19]))
+                .thenReturn(List.of(expectedIPv6Packets[20]))
+                .thenReturn(List.of(expectedIPv6Packets[21]))
+                .thenReturn(List.of(expectedIPv6Packets[22]))
+                .thenReturn(List.of(expectedIPv6Packets[23]));
 
         thread = new HandlerThread("MdnsServiceTypeClientTests");
         thread.start();
@@ -242,22 +244,13 @@
             return true;
         }).when(mockDeps).sendMessage(any(Handler.class), any(Message.class));
 
-        client = makeMdnsServiceTypeClient(mockPacketWriter);
+        client = makeMdnsServiceTypeClient();
     }
 
-    private MdnsServiceTypeClient makeMdnsServiceTypeClient(
-            @Nullable MdnsPacketWriter packetWriter) {
+    private MdnsServiceTypeClient makeMdnsServiceTypeClient() {
         return new MdnsServiceTypeClient(SERVICE_TYPE, mockSocketClient, currentThreadExecutor,
                 mockDecoderClock, socketKey, mockSharedLog, thread.getLooper(), mockDeps,
-                serviceCache) {
-            @Override
-            MdnsPacketWriter createMdnsPacketWriter() {
-                if (packetWriter == null) {
-                    return super.createMdnsPacketWriter();
-                }
-                return packetWriter;
-            }
-        };
+                serviceCache, featureFlags);
     }
 
     @After
@@ -697,27 +690,27 @@
 
     @Test
     public void testCombinedSubtypesQueriedWithMultipleListeners() throws Exception {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
         final MdnsSearchOptions searchOptions1 = MdnsSearchOptions.newBuilder()
                 .addSubtype("subtype1").build();
         final MdnsSearchOptions searchOptions2 = MdnsSearchOptions.newBuilder()
                 .addSubtype("subtype2").build();
+        doCallRealMethod().when(mockDeps).getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), any(InetSocketAddress.class), anyBoolean());
         startSendAndReceive(mockListenerOne, searchOptions1);
-        currentThreadExecutor.getAndClearSubmittedRunnable().run();
+        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
 
         InOrder inOrder = inOrder(mockListenerOne, mockSocketClient, mockDeps);
 
         // Verify the query asks for subtype1
-        final ArgumentCaptor<DatagramPacket> subtype1QueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
-        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
+        final ArgumentCaptor<List<DatagramPacket>> subtype1QueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         // Send twice for IPv4 and IPv6
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
                 subtype1QueryCaptor.capture(),
                 eq(socketKey), eq(false));
 
         final MdnsPacket subtype1Query = MdnsPacket.parse(
-                new MdnsPacketReader(subtype1QueryCaptor.getValue()));
+                new MdnsPacketReader(subtype1QueryCaptor.getValue().get(0)));
 
         assertEquals(2, subtype1Query.questions.size());
         assertTrue(hasQuestion(subtype1Query, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
@@ -729,8 +722,8 @@
         inOrder.verify(mockDeps).removeMessages(any(), eq(EVENT_START_QUERYTASK));
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
 
-        final ArgumentCaptor<DatagramPacket> combinedSubtypesQueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> combinedSubtypesQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
                 combinedSubtypesQueryCaptor.capture(),
                 eq(socketKey), eq(false));
@@ -738,7 +731,7 @@
         inOrder.verify(mockDeps).sendMessageDelayed(any(), any(), anyLong());
 
         final MdnsPacket combinedSubtypesQuery = MdnsPacket.parse(
-                new MdnsPacketReader(combinedSubtypesQueryCaptor.getValue()));
+                new MdnsPacketReader(combinedSubtypesQueryCaptor.getValue().get(0)));
 
         assertEquals(3, combinedSubtypesQuery.questions.size());
         assertTrue(hasQuestion(combinedSubtypesQuery, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
@@ -754,15 +747,15 @@
         dispatchMessage();
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
 
-        final ArgumentCaptor<DatagramPacket> subtype2QueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> subtype2QueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         // Send twice for IPv4 and IPv6
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
                 subtype2QueryCaptor.capture(),
                 eq(socketKey), eq(false));
 
         final MdnsPacket subtype2Query = MdnsPacket.parse(
-                new MdnsPacketReader(subtype2QueryCaptor.getValue()));
+                new MdnsPacketReader(subtype2QueryCaptor.getValue().get(0)));
 
         assertEquals(2, subtype2Query.questions.size());
         assertTrue(hasQuestion(subtype2Query, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
@@ -1022,7 +1015,6 @@
     public void processResponse_searchOptionsEnableServiceRemoval_shouldRemove()
             throws Exception {
         final String serviceInstanceName = "service-instance-1";
-        client = makeMdnsServiceTypeClient(mockPacketWriter);
         MdnsSearchOptions searchOptions = MdnsSearchOptions.newBuilder()
                 .setRemoveExpiredService(true)
                 .setNumOfQueriesBeforeBackoff(Integer.MAX_VALUE)
@@ -1060,7 +1052,6 @@
     public void processResponse_searchOptionsNotEnableServiceRemoval_shouldNotRemove()
             throws Exception {
         final String serviceInstanceName = "service-instance-1";
-        client = makeMdnsServiceTypeClient(mockPacketWriter);
         startSendAndReceive(mockListenerOne, MdnsSearchOptions.getDefaultOptions());
         Runnable firstMdnsTask = currentThreadExecutor.getAndClearSubmittedRunnable();
 
@@ -1086,7 +1077,6 @@
             throws Exception {
         //MdnsConfigsFlagsImpl.removeServiceAfterTtlExpires.override(true);
         final String serviceInstanceName = "service-instance-1";
-        client = makeMdnsServiceTypeClient(mockPacketWriter);
         startSendAndReceive(mockListenerOne, MdnsSearchOptions.getDefaultOptions());
         Runnable firstMdnsTask = currentThreadExecutor.getAndClearSubmittedRunnable();
 
@@ -1201,8 +1191,6 @@
 
     @Test
     public void testProcessResponse_Resolve() throws Exception {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String instanceName = "service-instance";
         final String[] hostname = new String[] { "testhost "};
         final String ipV4Address = "192.0.2.0";
@@ -1213,14 +1201,17 @@
         final MdnsSearchOptions resolveOptions2 = MdnsSearchOptions.newBuilder()
                 .setResolveInstanceName(instanceName).build();
 
+        doCallRealMethod().when(mockDeps).getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), any(InetSocketAddress.class), anyBoolean());
+
         startSendAndReceive(mockListenerOne, resolveOptions1);
         startSendAndReceive(mockListenerTwo, resolveOptions2);
         // No need to verify order for both listeners; and order is not guaranteed between them
         InOrder inOrder = inOrder(mockListenerOne, mockSocketClient);
 
         // Verify a query for SRV/TXT was sent, but no PTR query
-        final ArgumentCaptor<DatagramPacket> srvTxtQueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> srvTxtQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         // Send twice for IPv4 and IPv6
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
@@ -1232,7 +1223,7 @@
         verify(mockListenerTwo).onDiscoveryQuerySent(any(), anyInt());
 
         final MdnsPacket srvTxtQueryPacket = MdnsPacket.parse(
-                new MdnsPacketReader(srvTxtQueryCaptor.getValue()));
+                new MdnsPacketReader(srvTxtQueryCaptor.getValue().get(0)));
 
         final String[] serviceName = getTestServiceName(instanceName);
         assertEquals(1, srvTxtQueryPacket.questions.size());
@@ -1264,8 +1255,8 @@
 
         // Expect a query for A/AAAA
         dispatchMessage();
-        final ArgumentCaptor<DatagramPacket> addressQueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> addressQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
                 addressQueryCaptor.capture(),
@@ -1275,7 +1266,7 @@
         verify(mockListenerTwo, times(2)).onDiscoveryQuerySent(any(), anyInt());
 
         final MdnsPacket addressQueryPacket = MdnsPacket.parse(
-                new MdnsPacketReader(addressQueryCaptor.getValue()));
+                new MdnsPacketReader(addressQueryCaptor.getValue().get(0)));
         assertEquals(2, addressQueryPacket.questions.size());
         assertTrue(hasQuestion(addressQueryPacket, MdnsRecord.TYPE_A, hostname));
         assertTrue(hasQuestion(addressQueryPacket, MdnsRecord.TYPE_AAAA, hostname));
@@ -1317,8 +1308,6 @@
 
     @Test
     public void testRenewTxtSrvInResolve() throws Exception {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String instanceName = "service-instance";
         final String[] hostname = new String[] { "testhost "};
         final String ipV4Address = "192.0.2.0";
@@ -1327,12 +1316,15 @@
         final MdnsSearchOptions resolveOptions = MdnsSearchOptions.newBuilder()
                 .setResolveInstanceName(instanceName).build();
 
+        doCallRealMethod().when(mockDeps).getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), any(InetSocketAddress.class), anyBoolean());
+
         startSendAndReceive(mockListenerOne, resolveOptions);
         InOrder inOrder = inOrder(mockListenerOne, mockSocketClient);
 
         // Get the query for SRV/TXT
-        final ArgumentCaptor<DatagramPacket> srvTxtQueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> srvTxtQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         // Send twice for IPv4 and IPv6
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
@@ -1342,7 +1334,7 @@
         assertNotNull(delayMessage);
 
         final MdnsPacket srvTxtQueryPacket = MdnsPacket.parse(
-                new MdnsPacketReader(srvTxtQueryCaptor.getValue()));
+                new MdnsPacketReader(srvTxtQueryCaptor.getValue().get(0)));
 
         final String[] serviceName = getTestServiceName(instanceName);
         assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_ANY, serviceName));
@@ -1386,8 +1378,8 @@
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
 
         // Expect a renewal query
-        final ArgumentCaptor<DatagramPacket> renewalQueryCaptor =
-                ArgumentCaptor.forClass(DatagramPacket.class);
+        final ArgumentCaptor<List<DatagramPacket>> renewalQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
         // Second and later sends are sent as "expect multicast response" queries
         inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
                 renewalQueryCaptor.capture(),
@@ -1396,7 +1388,7 @@
         assertNotNull(delayMessage);
         inOrder.verify(mockListenerOne).onDiscoveryQuerySent(any(), anyInt());
         final MdnsPacket renewalPacket = MdnsPacket.parse(
-                new MdnsPacketReader(renewalQueryCaptor.getValue()));
+                new MdnsPacketReader(renewalQueryCaptor.getValue().get(0)));
         assertTrue(hasQuestion(renewalPacket, MdnsRecord.TYPE_ANY, serviceName));
         inOrder.verifyNoMoreInteractions();
 
@@ -1431,8 +1423,6 @@
 
     @Test
     public void testProcessResponse_ResolveExcludesOtherServices() {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String requestedInstance = "instance1";
         final String otherInstance = "instance2";
         final String ipV4Address = "192.0.2.0";
@@ -1499,8 +1489,6 @@
 
     @Test
     public void testProcessResponse_SubtypeDiscoveryLimitedToSubtype() {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String matchingInstance = "instance1";
         final String subtype = "_subtype";
         final String otherInstance = "instance2";
@@ -1587,8 +1575,6 @@
 
     @Test
     public void testProcessResponse_SubtypeChange() {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String matchingInstance = "instance1";
         final String subtype = "_subtype";
         final String ipV4Address = "192.0.2.0";
@@ -1670,8 +1656,6 @@
 
     @Test
     public void testNotifySocketDestroyed() throws Exception {
-        client = makeMdnsServiceTypeClient(/* packetWriter= */ null);
-
         final String requestedInstance = "instance1";
         final String otherInstance = "instance2";
         final String ipV4Address = "192.0.2.0";
@@ -1946,6 +1930,138 @@
                 16 /* scheduledCount */);
     }
 
+    @Test
+    public void testSendQueryWithKnownAnswers() throws Exception {
+        client = new MdnsServiceTypeClient(SERVICE_TYPE, mockSocketClient, currentThreadExecutor,
+                mockDecoderClock, socketKey, mockSharedLog, thread.getLooper(), mockDeps,
+                serviceCache,
+                MdnsFeatureFlags.newBuilder().setIsQueryWithKnownAnswerEnabled(true).build());
+
+        doCallRealMethod().when(mockDeps).getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), any(InetSocketAddress.class), anyBoolean());
+
+        startSendAndReceive(mockListenerOne, MdnsSearchOptions.getDefaultOptions());
+        InOrder inOrder = inOrder(mockListenerOne, mockSocketClient);
+
+        final ArgumentCaptor<List<DatagramPacket>> queryCaptor =
+                ArgumentCaptor.forClass(List.class);
+        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
+        // Send twice for IPv4 and IPv6
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
+                queryCaptor.capture(), eq(socketKey), eq(false));
+        verify(mockDeps, times(1)).sendMessage(any(), any(Message.class));
+        assertNotNull(delayMessage);
+
+        final MdnsPacket queryPacket = MdnsPacket.parse(
+                new MdnsPacketReader(queryCaptor.getValue().get(0)));
+        assertTrue(hasQuestion(queryPacket, MdnsRecord.TYPE_PTR));
+
+        // Process a response
+        final String serviceName = "service-instance";
+        final String ipV4Address = "192.0.2.0";
+        final String[] subtypeLabels = Stream.concat(Stream.of("_subtype", "_sub"),
+                        Arrays.stream(SERVICE_TYPE_LABELS)).toArray(String[]::new);
+        final MdnsPacket packetWithoutSubtype = createResponse(
+                serviceName, ipV4Address, 5353, SERVICE_TYPE_LABELS,
+                Collections.emptyMap() /* textAttributes */, TEST_TTL);
+        final MdnsPointerRecord originalPtr = (MdnsPointerRecord) CollectionUtils.findFirst(
+                packetWithoutSubtype.answers, r -> r instanceof MdnsPointerRecord);
+
+        // Add a subtype PTR record
+        final ArrayList<MdnsRecord> newAnswers = new ArrayList<>(packetWithoutSubtype.answers);
+        newAnswers.add(new MdnsPointerRecord(subtypeLabels, originalPtr.getReceiptTime(),
+                originalPtr.getCacheFlush(), originalPtr.getTtl(), originalPtr.getPointer()));
+        final MdnsPacket packetWithSubtype = new MdnsPacket(
+                packetWithoutSubtype.flags,
+                packetWithoutSubtype.questions,
+                newAnswers,
+                packetWithoutSubtype.authorityRecords,
+                packetWithoutSubtype.additionalRecords);
+        processResponse(packetWithSubtype, socketKey);
+
+        // Expect a query with known answers
+        dispatchMessage();
+        final ArgumentCaptor<List<DatagramPacket>> knownAnswersQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
+        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
+                knownAnswersQueryCaptor.capture(), eq(socketKey), eq(false));
+
+        final MdnsPacket knownAnswersQueryPacket = MdnsPacket.parse(
+                new MdnsPacketReader(knownAnswersQueryCaptor.getValue().get(0)));
+        assertTrue(hasQuestion(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
+        assertTrue(hasAnswer(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
+        assertFalse(hasAnswer(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, subtypeLabels));
+    }
+
+    @Test
+    public void testSendQueryWithSubTypeWithKnownAnswers() throws Exception {
+        client = new MdnsServiceTypeClient(SERVICE_TYPE, mockSocketClient, currentThreadExecutor,
+                mockDecoderClock, socketKey, mockSharedLog, thread.getLooper(), mockDeps,
+                serviceCache,
+                MdnsFeatureFlags.newBuilder().setIsQueryWithKnownAnswerEnabled(true).build());
+
+        doCallRealMethod().when(mockDeps).getDatagramPacketsFromMdnsPacket(
+                any(), any(MdnsPacket.class), any(InetSocketAddress.class), anyBoolean());
+
+        final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
+                .addSubtype("subtype").build();
+        startSendAndReceive(mockListenerOne, options);
+        InOrder inOrder = inOrder(mockListenerOne, mockSocketClient);
+
+        final ArgumentCaptor<List<DatagramPacket>> queryCaptor =
+                ArgumentCaptor.forClass(List.class);
+        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
+        // Send twice for IPv4 and IPv6
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
+                queryCaptor.capture(), eq(socketKey), eq(false));
+        verify(mockDeps, times(1)).sendMessage(any(), any(Message.class));
+        assertNotNull(delayMessage);
+
+        final MdnsPacket queryPacket = MdnsPacket.parse(
+                new MdnsPacketReader(queryCaptor.getValue().get(0)));
+        final String[] subtypeLabels = Stream.concat(Stream.of("_subtype", "_sub"),
+                Arrays.stream(SERVICE_TYPE_LABELS)).toArray(String[]::new);
+        assertTrue(hasQuestion(queryPacket, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
+        assertTrue(hasQuestion(queryPacket, MdnsRecord.TYPE_PTR, subtypeLabels));
+
+        // Process a response
+        final String serviceName = "service-instance";
+        final String ipV4Address = "192.0.2.0";
+        final MdnsPacket packetWithoutSubtype = createResponse(
+                serviceName, ipV4Address, 5353, SERVICE_TYPE_LABELS,
+                Collections.emptyMap() /* textAttributes */, TEST_TTL);
+        final MdnsPointerRecord originalPtr = (MdnsPointerRecord) CollectionUtils.findFirst(
+                packetWithoutSubtype.answers, r -> r instanceof MdnsPointerRecord);
+
+        // Add a subtype PTR record
+        final ArrayList<MdnsRecord> newAnswers = new ArrayList<>(packetWithoutSubtype.answers);
+        newAnswers.add(new MdnsPointerRecord(subtypeLabels, originalPtr.getReceiptTime(),
+                originalPtr.getCacheFlush(), originalPtr.getTtl(), originalPtr.getPointer()));
+        final MdnsPacket packetWithSubtype = new MdnsPacket(
+                packetWithoutSubtype.flags,
+                packetWithoutSubtype.questions,
+                newAnswers,
+                packetWithoutSubtype.authorityRecords,
+                packetWithoutSubtype.additionalRecords);
+        processResponse(packetWithSubtype, socketKey);
+
+        // Expect a query with known answers
+        dispatchMessage();
+        final ArgumentCaptor<List<DatagramPacket>> knownAnswersQueryCaptor =
+                ArgumentCaptor.forClass(List.class);
+        currentThreadExecutor.getAndClearLastScheduledRunnable().run();
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
+                knownAnswersQueryCaptor.capture(), eq(socketKey), eq(false));
+
+        final MdnsPacket knownAnswersQueryPacket = MdnsPacket.parse(
+                new MdnsPacketReader(knownAnswersQueryCaptor.getValue().get(0)));
+        assertTrue(hasQuestion(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
+        assertTrue(hasQuestion(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, subtypeLabels));
+        assertTrue(hasAnswer(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, SERVICE_TYPE_LABELS));
+        assertTrue(hasAnswer(knownAnswersQueryPacket, MdnsRecord.TYPE_PTR, subtypeLabels));
+    }
+
     private static MdnsServiceInfo matchServiceName(String name) {
         return argThat(info -> info.getServiceInstanceName().equals(name));
     }
@@ -1967,17 +2083,21 @@
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         if (expectsUnicastResponse) {
             verify(mockSocketClient).sendPacketRequestingUnicastResponse(
-                    expectedIPv4Packets[index], socketKey, false);
+                    argThat(pkts -> pkts.get(0).equals(expectedIPv4Packets[index])),
+                    eq(socketKey), eq(false));
             if (multipleSocketDiscovery) {
                 verify(mockSocketClient).sendPacketRequestingUnicastResponse(
-                        expectedIPv6Packets[index], socketKey, false);
+                        argThat(pkts -> pkts.get(0).equals(expectedIPv6Packets[index])),
+                        eq(socketKey), eq(false));
             }
         } else {
             verify(mockSocketClient).sendPacketRequestingMulticastResponse(
-                    expectedIPv4Packets[index], socketKey, false);
+                    argThat(pkts -> pkts.get(0).equals(expectedIPv4Packets[index])),
+                    eq(socketKey), eq(false));
             if (multipleSocketDiscovery) {
                 verify(mockSocketClient).sendPacketRequestingMulticastResponse(
-                        expectedIPv6Packets[index], socketKey, false);
+                        argThat(pkts -> pkts.get(0).equals(expectedIPv6Packets[index])),
+                        eq(socketKey), eq(false));
             }
         }
         verify(mockDeps, times(index + 1))
@@ -2006,6 +2126,12 @@
                 && (name == null || Arrays.equals(q.name, name)));
     }
 
+    private static boolean hasAnswer(MdnsPacket packet, int type, @NonNull String[] name) {
+        return packet.answers.stream().anyMatch(q -> {
+            return q.getType() == type && (Arrays.equals(q.name, name));
+        });
+    }
+
     // A fake ScheduledExecutorService that keeps tracking the last scheduled Runnable and its delay
     // time.
     private class FakeExecutor extends ScheduledThreadPoolExecutor {
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
index 8b7ab71..1989ed3 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
@@ -26,14 +26,18 @@
 import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.inOrder;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import android.Manifest.permission;
 import android.annotation.RequiresPermission;
 import android.content.Context;
+import android.net.ConnectivityManager;
 import android.net.wifi.WifiManager;
 import android.net.wifi.WifiManager.MulticastLock;
 import android.text.format.DateUtils;
@@ -48,7 +52,9 @@
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
 import org.mockito.ArgumentMatchers;
+import org.mockito.InOrder;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.mockito.invocation.InvocationOnMock;
@@ -56,6 +62,8 @@
 import java.io.IOException;
 import java.net.DatagramPacket;
 import java.net.InetSocketAddress;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -71,6 +79,7 @@
 
     @Mock private Context mContext;
     @Mock private WifiManager mockWifiManager;
+    @Mock private ConnectivityManager mockConnectivityManager;
     @Mock private MdnsSocket mockMulticastSocket;
     @Mock private MdnsSocket mockUnicastSocket;
     @Mock private MulticastLock mockMulticastLock;
@@ -84,6 +93,9 @@
     public void setup() throws RuntimeException, IOException {
         MockitoAnnotations.initMocks(this);
 
+        doReturn(mockConnectivityManager).when(mContext).getSystemService(
+                Context.CONNECTIVITY_SERVICE);
+
         when(mockWifiManager.createMulticastLock(ArgumentMatchers.anyString()))
                 .thenReturn(mockMulticastLock);
 
@@ -226,7 +238,7 @@
 
         // Sends a packet.
         DatagramPacket packet = getTestDatagramPacket();
-        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         // mockMulticastSocket.send() will be called on another thread. If we verify it immediately,
         // it may not be called yet. So timeout is added.
@@ -234,7 +246,7 @@
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
 
         // Verify the packet is sent by the unicast socket.
-        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+        mdnsClient.sendPacketRequestingUnicastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         verify(mockMulticastSocket, timeout(TIMEOUT).times(1)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(1)).send(packet);
@@ -279,7 +291,7 @@
 
         // Sends a packet.
         DatagramPacket packet = getTestDatagramPacket();
-        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         // mockMulticastSocket.send() will be called on another thread. If we verify it immediately,
         // it may not be called yet. So timeout is added.
@@ -287,7 +299,7 @@
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
 
         // Verify the packet is sent by the multicast socket as well.
-        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+        mdnsClient.sendPacketRequestingUnicastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         verify(mockMulticastSocket, timeout(TIMEOUT).times(2)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
@@ -320,19 +332,25 @@
 
     @Test
     public void testStartStop() throws IOException {
-        for (int i = 0; i < 5; i++) {
+        for (int i = 1; i <= 5; i++) {
             mdnsClient.startDiscovery();
 
             Thread multicastReceiverThread = mdnsClient.multicastReceiveThread;
             Thread socketThread = mdnsClient.sendThread;
+            final ArgumentCaptor<ConnectivityManager.NetworkCallback> cbCaptor =
+                    ArgumentCaptor.forClass(ConnectivityManager.NetworkCallback.class);
 
             assertTrue(multicastReceiverThread.isAlive());
             assertTrue(socketThread.isAlive());
+            verify(mockConnectivityManager, times(i))
+                    .registerNetworkCallback(any(), cbCaptor.capture());
 
             mdnsClient.stopDiscovery();
 
             assertFalse(multicastReceiverThread.isAlive());
             assertFalse(socketThread.isAlive());
+            verify(mockConnectivityManager, times(i))
+                    .unregisterNetworkCallback(cbCaptor.getValue());
         }
     }
 
@@ -340,7 +358,7 @@
     public void testStopDiscovery_queueIsCleared() throws IOException {
         mdnsClient.startDiscovery();
         mdnsClient.stopDiscovery();
-        mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(getTestDatagramPacket()),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         synchronized (mdnsClient.multicastPacketQueue) {
@@ -352,7 +370,7 @@
     public void testSendPacket_afterDiscoveryStops() throws IOException {
         mdnsClient.startDiscovery();
         mdnsClient.stopDiscovery();
-        mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(getTestDatagramPacket()),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         synchronized (mdnsClient.multicastPacketQueue) {
@@ -366,7 +384,7 @@
         //MdnsConfigsFlagsImpl.mdnsPacketQueueMaxSize.override(2L);
         mdnsClient.startDiscovery();
         for (int i = 0; i < 100; i++) {
-            mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+            mdnsClient.sendPacketRequestingMulticastResponse(List.of(getTestDatagramPacket()),
                     false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         }
 
@@ -464,9 +482,9 @@
 
         mdnsClient.startDiscovery();
         DatagramPacket packet = getTestDatagramPacket();
-        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+        mdnsClient.sendPacketRequestingUnicastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
-        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         // Wait for the timer to be triggered.
@@ -497,9 +515,9 @@
         assertFalse(mdnsClient.receivedUnicastResponse);
         assertFalse(mdnsClient.cannotReceiveMulticastResponse.get());
 
-        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+        mdnsClient.sendPacketRequestingUnicastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
-        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+        mdnsClient.sendPacketRequestingMulticastResponse(List.of(packet),
                 false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         Thread.sleep(MdnsConfigs.checkMulticastResponseIntervalMs() * 2);
 
@@ -556,6 +574,26 @@
                 .onResponseReceived(any(), argThat(key -> key.getInterfaceIndex() == -1));
     }
 
+    @Test
+    public void testSendPacketWithMultipleDatagramPacket() throws IOException {
+        mdnsClient.startDiscovery();
+        final List<DatagramPacket> packets = new ArrayList<>();
+        for (int i = 0; i < 10; i++) {
+            packets.add(new DatagramPacket(new byte[10 + i] /* buff */, 0 /* offset */,
+                    10 + i /* length */, MdnsConstants.IPV4_SOCKET_ADDR));
+        }
+
+        // Sends packets.
+        mdnsClient.sendPacketRequestingMulticastResponse(packets,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        InOrder inOrder = inOrder(mockMulticastSocket);
+        for (int i = 0; i < 10; i++) {
+            // mockMulticastSocket.send() will be called on another thread. If we verify it
+            // immediately, it may not be called yet. So timeout is added.
+            inOrder.verify(mockMulticastSocket, timeout(TIMEOUT)).send(packets.get(i));
+        }
+    }
+
     private DatagramPacket getTestDatagramPacket() {
         return new DatagramPacket(buf, 0, 5,
                 new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), 5353 /* port */));
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/util/MdnsUtilsTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/util/MdnsUtilsTest.kt
index f705bcb..009205e 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/util/MdnsUtilsTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/util/MdnsUtilsTest.kt
@@ -17,6 +17,13 @@
 package com.android.server.connectivity.mdns.util
 
 import android.os.Build
+import com.android.server.connectivity.mdns.MdnsConstants
+import com.android.server.connectivity.mdns.MdnsConstants.FLAG_TRUNCATED
+import com.android.server.connectivity.mdns.MdnsPacket
+import com.android.server.connectivity.mdns.MdnsPacketReader
+import com.android.server.connectivity.mdns.MdnsPointerRecord
+import com.android.server.connectivity.mdns.MdnsRecord
+import com.android.server.connectivity.mdns.util.MdnsUtils.createQueryDatagramPackets
 import com.android.server.connectivity.mdns.util.MdnsUtils.equalsDnsLabelIgnoreDnsCase
 import com.android.server.connectivity.mdns.util.MdnsUtils.equalsIgnoreDnsCase
 import com.android.server.connectivity.mdns.util.MdnsUtils.toDnsLabelsLowerCase
@@ -24,6 +31,8 @@
 import com.android.server.connectivity.mdns.util.MdnsUtils.truncateServiceName
 import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRunner
+import java.net.DatagramPacket
+import kotlin.test.assertContentEquals
 import org.junit.Assert.assertArrayEquals
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
@@ -43,19 +52,27 @@
         assertEquals("ţést", toDnsLowerCase("ţést"))
         // Unicode characters 0x10000 (𐀀), 0x10001 (𐀁), 0x10041 (𐁁)
         // Note the last 2 bytes of 0x10041 are identical to 'A', but it should remain unchanged.
-        assertEquals("test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- ",
-                toDnsLowerCase("Test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- "))
+        assertEquals(
+            "test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- ",
+                toDnsLowerCase("Test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- ")
+        )
         // Also test some characters where the first surrogate is not \ud800
-        assertEquals("test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
+        assertEquals(
+            "test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
                 "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<",
-                toDnsLowerCase("Test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
-                        "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<"))
+                toDnsLowerCase(
+                    "Test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
+                        "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<"
+                )
+        )
     }
 
     @Test
     fun testToDnsLabelsLowerCase() {
-        assertArrayEquals(arrayOf("test", "tÉst", "ţést"),
-            toDnsLabelsLowerCase(arrayOf("TeSt", "TÉST", "ţést")))
+        assertArrayEquals(
+            arrayOf("test", "tÉst", "ţést"),
+            toDnsLabelsLowerCase(arrayOf("TeSt", "TÉST", "ţést"))
+        )
     }
 
     @Test
@@ -67,13 +84,17 @@
         assertFalse(equalsIgnoreDnsCase("ŢÉST", "ţést"))
         // Unicode characters 0x10000 (𐀀), 0x10001 (𐀁), 0x10041 (𐁁)
         // Note the last 2 bytes of 0x10041 are identical to 'A', but it should remain unchanged.
-        assertTrue(equalsIgnoreDnsCase("test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- ",
-                "Test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- "))
+        assertTrue(equalsIgnoreDnsCase(
+            "test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- ",
+                "Test: -->\ud800\udc00 \ud800\udc01 \ud800\udc41<-- "
+        ))
         // Also test some characters where the first surrogate is not \ud800
-        assertTrue(equalsIgnoreDnsCase("test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
+        assertTrue(equalsIgnoreDnsCase(
+            "test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
                 "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<",
                 "Test: >\ud83c\udff4\udb40\udc67\udb40\udc62\udb40" +
-                        "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<"))
+                        "\udc77\udb40\udc6c\udb40\udc73\udb40\udc7f<"
+        ))
     }
 
     @Test
@@ -92,14 +113,84 @@
 
     @Test
     fun testTypeEqualsOrIsSubtype() {
-        assertTrue(MdnsUtils.typeEqualsOrIsSubtype(arrayOf("_type", "_tcp", "local"),
-            arrayOf("_type", "_TCP", "local")))
-        assertTrue(MdnsUtils.typeEqualsOrIsSubtype(arrayOf("_type", "_tcp", "local"),
-            arrayOf("a", "_SUB", "_type", "_TCP", "local")))
-        assertFalse(MdnsUtils.typeEqualsOrIsSubtype(arrayOf("_sub", "_type", "_tcp", "local"),
-                arrayOf("_type", "_TCP", "local")))
+        assertTrue(MdnsUtils.typeEqualsOrIsSubtype(
+            arrayOf("_type", "_tcp", "local"),
+            arrayOf("_type", "_TCP", "local")
+        ))
+        assertTrue(MdnsUtils.typeEqualsOrIsSubtype(
+            arrayOf("_type", "_tcp", "local"),
+            arrayOf("a", "_SUB", "_type", "_TCP", "local")
+        ))
+        assertFalse(MdnsUtils.typeEqualsOrIsSubtype(
+            arrayOf("_sub", "_type", "_tcp", "local"),
+                arrayOf("_type", "_TCP", "local")
+        ))
         assertFalse(MdnsUtils.typeEqualsOrIsSubtype(
                 arrayOf("a", "_other", "_type", "_tcp", "local"),
-                arrayOf("a", "_SUB", "_type", "_TCP", "local")))
+                arrayOf("a", "_SUB", "_type", "_TCP", "local")
+        ))
+    }
+
+    @Test
+    fun testCreateQueryDatagramPackets() {
+        // Question data bytes:
+        // Name label(17)(duplicated labels) + PTR type(2) + cacheFlush(2) = 21
+        //
+        // Known answers data bytes:
+        // Name label(17)(duplicated labels) + PTR type(2) + cacheFlush(2) + receiptTimeMillis(4)
+        // + Data length(2) + Pointer data(18)(duplicated labels) = 45
+        val questions = mutableListOf<MdnsRecord>()
+        val knownAnswers = mutableListOf<MdnsRecord>()
+        for (i in 1..100) {
+            questions.add(MdnsPointerRecord(arrayOf("_testservice$i", "_tcp", "local"), false))
+            knownAnswers.add(MdnsPointerRecord(
+                    arrayOf("_testservice$i", "_tcp", "local"),
+                    0L,
+                    false,
+                    4_500_000L,
+                    arrayOf("MyTestService$i", "_testservice$i", "_tcp", "local")
+            ))
+        }
+        // MdnsPacket data bytes:
+        // Questions(21 * 100) + Answers(45 * 100) = 6600 -> at least 5 packets
+        val query = MdnsPacket(
+                MdnsConstants.FLAGS_QUERY,
+                questions as List<MdnsRecord>,
+                knownAnswers as List<MdnsRecord>,
+                emptyList(),
+                emptyList()
+        )
+        // Expect the oversize MdnsPacket to be separated into 5 DatagramPackets.
+        val bufferSize = 1500
+        val packets = createQueryDatagramPackets(
+                ByteArray(bufferSize),
+                query,
+                MdnsConstants.IPV4_SOCKET_ADDR
+        )
+        assertEquals(5, packets.size)
+        assertTrue(packets.all { packet -> packet.length < bufferSize })
+
+        val mdnsPacket = createMdnsPacketFromMultipleDatagramPackets(packets)
+        assertEquals(query.flags, mdnsPacket.flags)
+        assertContentEquals(query.questions, mdnsPacket.questions)
+        assertContentEquals(query.answers, mdnsPacket.answers)
+    }
+
+    private fun createMdnsPacketFromMultipleDatagramPackets(
+            packets: List<DatagramPacket>
+    ): MdnsPacket {
+        var flags = 0
+        val questions = mutableListOf<MdnsRecord>()
+        val answers = mutableListOf<MdnsRecord>()
+        for ((index, packet) in packets.withIndex()) {
+            val mdnsPacket = MdnsPacket.parse(MdnsPacketReader(packet))
+            if (index != packets.size - 1) {
+                assertTrue((mdnsPacket.flags and FLAG_TRUNCATED) == FLAG_TRUNCATED)
+            }
+            flags = mdnsPacket.flags
+            questions.addAll(mdnsPacket.questions)
+            answers.addAll(mdnsPacket.answers)
+        }
+        return MdnsPacket(flags, questions, answers, emptyList(), emptyList())
     }
 }
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSActiveNetworkInfoTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSActiveNetworkInfoTest.kt
new file mode 100644
index 0000000..360a298
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSActiveNetworkInfoTest.kt
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.net.INetd.PERMISSION_INTERNET
+import android.net.INetd.PERMISSION_NONE
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkInfo.DetailedState.BLOCKED
+import android.net.NetworkInfo.DetailedState.CONNECTED
+import android.net.connectivity.ConnectivityCompatChanges.NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyBoolean
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mockito.doReturn
+
+private fun nc() = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .addCapability(NET_CAPABILITY_INTERNET)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .build()
+
+@RunWith(DevSdkIgnoreRunner::class)
+@SmallTest
+@IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+class CSActiveNetworkInfoTest : CSTest() {
+
+    fun doTestGetActiveNetworkInfo(
+            changeEnabled: Boolean,
+            permissions: Int,
+            expectBlocked: Boolean
+    ) {
+        deps.setChangeIdEnabled(changeEnabled, NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION)
+        doReturn(permissions).`when`(bpfNetMaps).getNetPermForUid(anyInt())
+
+        val agent = Agent(nc = nc())
+        agent.connect()
+
+        val networkInfo = cm.activeNetworkInfo
+        assertNotNull(networkInfo)
+        if (expectBlocked) {
+            assertEquals(BLOCKED, networkInfo.detailedState)
+        } else {
+            assertEquals(CONNECTED, networkInfo.detailedState)
+        }
+        assertEquals(expectBlocked, cm.activeNetwork == null)
+        agent.disconnect()
+    }
+
+    @Test
+    fun testGetActiveNetworkInfo() {
+        doReturn(true).`when`(bpfNetMaps).isUidNetworkingBlocked(anyInt(), anyBoolean())
+        doTestGetActiveNetworkInfo(
+                changeEnabled = true,
+                permissions = PERMISSION_NONE,
+                expectBlocked = true
+        )
+        doTestGetActiveNetworkInfo(
+                changeEnabled = false,
+                permissions = PERMISSION_INTERNET,
+                expectBlocked = true
+        )
+        // Network access is considered not blocked if the compat change is disabled and an app
+        // does not have PERMISSION_INTERNET
+        doTestGetActiveNetworkInfo(
+                changeEnabled = false,
+                permissions = PERMISSION_NONE,
+                expectBlocked = false
+        )
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSBlockedReasonsTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSBlockedReasonsTest.kt
new file mode 100644
index 0000000..3ad8de8
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSBlockedReasonsTest.kt
@@ -0,0 +1,422 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.net.ConnectivityManager.BLOCKED_METERED_REASON_DATA_SAVER
+import android.net.ConnectivityManager.BLOCKED_METERED_REASON_USER_RESTRICTED
+import android.net.ConnectivityManager.BLOCKED_REASON_APP_BACKGROUND
+import android.net.ConnectivityManager.BLOCKED_REASON_DOZE
+import android.net.ConnectivityManager.BLOCKED_REASON_NETWORK_RESTRICTED
+import android.net.ConnectivityManager.BLOCKED_REASON_NONE
+import android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND
+import android.net.ConnectivityManager.FIREWALL_CHAIN_DOZABLE
+import android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER
+import android.net.ConnectivityManager.FIREWALL_RULE_ALLOW
+import android.net.ConnectivityManager.FIREWALL_RULE_DENY
+import android.net.ConnectivitySettingsManager
+import android.net.INetd.PERMISSION_NONE
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
+import android.net.NetworkCapabilities.TRANSPORT_CELLULAR
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkRequest
+import android.net.connectivity.ConnectivityCompatChanges.NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION
+import android.os.Build
+import android.os.Process
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.RecorderCallback.CallbackEntry.BlockedStatusInt
+import com.android.testutils.TestableNetworkCallback
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyBoolean
+import org.mockito.Mockito.doReturn
+
+private fun cellNc() = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_CELLULAR)
+        .addCapability(NET_CAPABILITY_INTERNET)
+        .addCapability(NET_CAPABILITY_NOT_SUSPENDED)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .build()
+private fun cellRequest() = NetworkRequest.Builder()
+        .addTransportType(TRANSPORT_CELLULAR)
+        .build()
+private fun wifiNc() = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .addCapability(NET_CAPABILITY_INTERNET)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .addCapability(NET_CAPABILITY_NOT_METERED)
+        .build()
+private fun wifiRequest() = NetworkRequest.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .build()
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+class CSBlockedReasonsTest : CSTest() {
+
+    inner class DetailedBlockedStatusCallback : TestableNetworkCallback() {
+        override fun onBlockedStatusChanged(network: Network, blockedReasons: Int) {
+            history.add(BlockedStatusInt(network, blockedReasons))
+        }
+
+        fun expectBlockedStatusChanged(network: Network, blockedReasons: Int) {
+            expect<BlockedStatusInt>(network) { it.reason == blockedReasons }
+        }
+    }
+
+    @Test
+    fun testBlockedReasons_onAvailable() {
+        doReturn(BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_DATA_SAVER)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+
+        val cellAgent = Agent(nc = cellNc())
+        cellAgent.connect()
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+
+        val cellCb = DetailedBlockedStatusCallback()
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(cellRequest(), cellCb)
+        cm.requestNetwork(wifiRequest(), wifiCb)
+
+        cellCb.expectAvailableCallbacks(
+                cellAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_DATA_SAVER
+        )
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_DOZE
+        )
+
+        cellAgent.disconnect()
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(cellCb)
+        cm.unregisterNetworkCallback(wifiCb)
+    }
+
+    @Test
+    fun testBlockedReasons_dataSaverChanged() {
+        doReturn(BLOCKED_REASON_APP_BACKGROUND or BLOCKED_METERED_REASON_DATA_SAVER)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        doReturn(true).`when`(netd).bandwidthEnableDataSaver(anyBoolean())
+
+        val cellCb = DetailedBlockedStatusCallback()
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(cellRequest(), cellCb)
+        cm.requestNetwork(wifiRequest(), wifiCb)
+
+        val cellAgent = Agent(nc = cellNc())
+        cellAgent.connect()
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+        cellCb.expectAvailableCallbacks(
+                cellAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_APP_BACKGROUND or BLOCKED_METERED_REASON_DATA_SAVER
+        )
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_APP_BACKGROUND
+        )
+
+        // Disable data saver
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setDataSaverEnabled(false)
+        cellCb.expectBlockedStatusChanged(cellAgent.network, BLOCKED_REASON_APP_BACKGROUND)
+
+        // waitForIdle since stubbing bpfNetMaps while CS handler thread calls
+        // bpfNetMaps.getNetPermForUid throws exception.
+        // The expectBlockedStatusChanged just above guarantees that the onBlockedStatusChanged
+        // method on this callback was called, but it does not guarantee that ConnectivityService
+        // has finished processing all onBlockedStatusChanged callbacks for all requests.
+        waitForIdle()
+        // Enable data saver
+        doReturn(BLOCKED_REASON_APP_BACKGROUND or BLOCKED_METERED_REASON_DATA_SAVER)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setDataSaverEnabled(true)
+        cellCb.expectBlockedStatusChanged(
+                cellAgent.network,
+                BLOCKED_REASON_APP_BACKGROUND or BLOCKED_METERED_REASON_DATA_SAVER
+        )
+        // BlockedStatus does not change for the non-metered network
+        wifiCb.assertNoCallback()
+
+        cellAgent.disconnect()
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(cellCb)
+        cm.unregisterNetworkCallback(wifiCb)
+    }
+
+    @Test
+    fun testBlockedReasons_setUidFirewallRule() {
+        doReturn(BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_USER_RESTRICTED)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+
+        val cellCb = DetailedBlockedStatusCallback()
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(cellRequest(), cellCb)
+        cm.requestNetwork(wifiRequest(), wifiCb)
+
+        val cellAgent = Agent(nc = cellNc())
+        cellAgent.connect()
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+        cellCb.expectAvailableCallbacks(
+                cellAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_USER_RESTRICTED
+        )
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_DOZE
+        )
+
+        // waitForIdle since stubbing bpfNetMaps while CS handler thread calls
+        // bpfNetMaps.getNetPermForUid throws exception.
+        // The expectBlockedStatusChanged just above guarantees that the onBlockedStatusChanged
+        // method on this callback was called, but it does not guarantee that ConnectivityService
+        // has finished processing all onBlockedStatusChanged callbacks for all requests.
+        waitForIdle()
+        // Set RULE_ALLOW on metered deny chain
+        doReturn(BLOCKED_REASON_DOZE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_METERED_DENY_USER,
+                Process.myUid(),
+                FIREWALL_RULE_ALLOW
+        )
+        cellCb.expectBlockedStatusChanged(
+                cellAgent.network,
+                BLOCKED_REASON_DOZE
+        )
+        // BlockedStatus does not change for the non-metered network
+        wifiCb.assertNoCallback()
+
+        // Set RULE_DENY on metered deny chain
+        doReturn(BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_USER_RESTRICTED)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_METERED_DENY_USER,
+                Process.myUid(),
+                FIREWALL_RULE_DENY
+        )
+        cellCb.expectBlockedStatusChanged(
+                cellAgent.network,
+                BLOCKED_REASON_DOZE or BLOCKED_METERED_REASON_USER_RESTRICTED
+        )
+        // BlockedStatus does not change for the non-metered network
+        wifiCb.assertNoCallback()
+
+        cellAgent.disconnect()
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(cellCb)
+        cm.unregisterNetworkCallback(wifiCb)
+    }
+
+    @Test
+    fun testBlockedReasons_setFirewallChainEnabled() {
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(wifiRequest(), wifiCb)
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_NONE
+        )
+
+        // Enable dozable firewall chain
+        doReturn(BLOCKED_REASON_DOZE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_DOZABLE, true)
+        wifiCb.expectBlockedStatusChanged(
+                wifiAgent.network,
+                BLOCKED_REASON_DOZE
+        )
+
+        // Disable dozable firewall chain
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_DOZABLE, false)
+        wifiCb.expectBlockedStatusChanged(
+                wifiAgent.network,
+                BLOCKED_REASON_NONE
+        )
+
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(wifiCb)
+    }
+
+    @Test
+    fun testBlockedReasons_replaceFirewallChain() {
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(wifiRequest(), wifiCb)
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_APP_BACKGROUND
+        )
+
+        // Put uid on background firewall chain
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.replaceFirewallChain(FIREWALL_CHAIN_BACKGROUND, intArrayOf(Process.myUid()))
+        wifiCb.expectBlockedStatusChanged(
+                wifiAgent.network,
+                BLOCKED_REASON_NONE
+        )
+
+        // Remove uid from background firewall chain
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.replaceFirewallChain(FIREWALL_CHAIN_BACKGROUND, intArrayOf())
+        wifiCb.expectBlockedStatusChanged(
+                wifiAgent.network,
+                BLOCKED_REASON_APP_BACKGROUND
+        )
+
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(wifiCb)
+    }
+
+    @Test
+    fun testBlockedReasons_perAppDefaultNetwork() {
+        doReturn(BLOCKED_METERED_REASON_USER_RESTRICTED)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+
+        val cellCb = DetailedBlockedStatusCallback()
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(cellRequest(), cellCb)
+        cm.requestNetwork(wifiRequest(), wifiCb)
+
+        val cellAgent = Agent(nc = cellNc())
+        cellAgent.connect()
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+
+        val cb = DetailedBlockedStatusCallback()
+        cm.registerDefaultNetworkCallback(cb)
+        cb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_NONE
+        )
+
+        // CS must send correct blocked reasons after per app default network change
+        ConnectivitySettingsManager.setMobileDataPreferredUids(context, setOf(Process.myUid()))
+        service.updateMobileDataPreferredUids()
+        cb.expectAvailableCallbacks(
+                cellAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_METERED_REASON_USER_RESTRICTED
+        )
+
+        // Remove per app default network request
+        ConnectivitySettingsManager.setMobileDataPreferredUids(context, setOf())
+        service.updateMobileDataPreferredUids()
+        cb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = BLOCKED_REASON_NONE
+        )
+
+        cellAgent.disconnect()
+        wifiAgent.disconnect()
+        cm.unregisterNetworkCallback(cellCb)
+        cm.unregisterNetworkCallback(wifiCb)
+        cm.unregisterNetworkCallback(cb)
+    }
+
+    private fun doTestBlockedReasonsNoInternetPermission(blockedByNoInternetPermission: Boolean) {
+        doReturn(PERMISSION_NONE).`when`(bpfNetMaps).getNetPermForUid(Process.myUid())
+
+        val wifiCb = DetailedBlockedStatusCallback()
+        cm.requestNetwork(wifiRequest(), wifiCb)
+        val wifiAgent = Agent(nc = wifiNc())
+        wifiAgent.connect()
+        val expectedBlockedReason = if (blockedByNoInternetPermission) {
+            BLOCKED_REASON_NETWORK_RESTRICTED
+        } else {
+            BLOCKED_REASON_NONE
+        }
+        wifiCb.expectAvailableCallbacks(
+                wifiAgent.network,
+                validated = false,
+                blockedReason = expectedBlockedReason
+        )
+
+        // Enable background firewall chain
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, true)
+        if (blockedByNoInternetPermission) {
+            wifiCb.expectBlockedStatusChanged(
+                    wifiAgent.network,
+                    BLOCKED_REASON_NETWORK_RESTRICTED or BLOCKED_REASON_APP_BACKGROUND
+            )
+        }
+        // waitForIdle since stubbing bpfNetMaps while CS handler thread calls
+        // bpfNetMaps.getNetPermForUid throws exception.
+        // ConnectivityService might haven't finished checking blocked status for all requests.
+        waitForIdle()
+
+        // Disable background firewall chain
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(Process.myUid())
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, false)
+        if (blockedByNoInternetPermission) {
+            wifiCb.expectBlockedStatusChanged(
+                    wifiAgent.network,
+                    BLOCKED_REASON_NETWORK_RESTRICTED
+            )
+        } else {
+            // No callback is expected since blocked reasons does not change from
+            // BLOCKED_REASON_NONE.
+            wifiCb.assertNoCallback()
+        }
+    }
+
+    @Test
+    fun testBlockedReasonsNoInternetPermission_changeDisabled() {
+        deps.setChangeIdEnabled(false, NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION)
+        doTestBlockedReasonsNoInternetPermission(blockedByNoInternetPermission = false)
+    }
+
+    @Test
+    fun testBlockedReasonsNoInternetPermission_changeEnabled() {
+        deps.setChangeIdEnabled(true, NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION)
+        doTestBlockedReasonsNoInternetPermission(blockedByNoInternetPermission = true)
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSCaptivePortalAppTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSCaptivePortalAppTest.kt
index be2b29c..0bad60d 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSCaptivePortalAppTest.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSCaptivePortalAppTest.kt
@@ -20,6 +20,7 @@
 import android.content.Intent
 import android.content.pm.PackageManager.PERMISSION_DENIED
 import android.content.pm.PackageManager.PERMISSION_GRANTED
+import android.net.CaptivePortal
 import android.net.ConnectivityManager.ACTION_CAPTIVE_PORTAL_SIGN_IN
 import android.net.ConnectivityManager.EXTRA_CAPTIVE_PORTAL
 import android.net.IpPrefix
@@ -33,23 +34,23 @@
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
 import android.net.NetworkCapabilities.TRANSPORT_WIFI
-import android.net.NetworkStack
-import android.net.CaptivePortal
 import android.net.NetworkRequest
 import android.net.NetworkScore
 import android.net.NetworkScore.KEEP_CONNECTED_FOR_TEST
+import android.net.NetworkStack
 import android.net.RouteInfo
 import android.os.Build
 import android.os.Bundle
 import androidx.test.filters.SmallTest
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
-import com.android.testutils.assertThrows
 import com.android.testutils.TestableNetworkCallback
+import kotlin.test.assertEquals
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mockito.never
 import org.mockito.Mockito.verify
-import kotlin.test.assertEquals
 
 // This allows keeping all the networks connected without having to file individual requests
 // for them.
@@ -95,16 +96,22 @@
         captivePortalCallback.expectAvailableCallbacksUnvalidated(wifiAgent)
         val signInIntent = startCaptivePortalApp(wifiAgent)
         // Remove the granted permissions
-        context.setPermission(NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
-                PERMISSION_DENIED)
+        context.setPermission(
+            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
+                PERMISSION_DENIED
+        )
         context.setPermission(NETWORK_STACK, PERMISSION_DENIED)
         val captivePortal: CaptivePortal? = signInIntent.getParcelableExtra(EXTRA_CAPTIVE_PORTAL)
-        assertThrows(SecurityException::class.java, { captivePortal?.reevaluateNetwork() })
+        captivePortal?.reevaluateNetwork()
+        verify(wifiAgent.networkMonitor, never()).forceReevaluation(anyInt())
     }
 
     private fun createWifiAgent(): CSAgentWrapper {
-        return Agent(score = keepScore(), lp = lp(WIFI_IFACE),
-                nc = nc(TRANSPORT_WIFI, NET_CAPABILITY_INTERNET))
+        return Agent(
+            score = keepScore(),
+            lp = lp(WIFI_IFACE),
+                nc = nc(TRANSPORT_WIFI, NET_CAPABILITY_INTERNET)
+        )
     }
 
     private fun startCaptivePortalApp(networkAgent: CSAgentWrapper): Intent {
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSDeclaredMethodsForCallbacksTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSDeclaredMethodsForCallbacksTest.kt
new file mode 100644
index 0000000..cf990b1
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSDeclaredMethodsForCallbacksTest.kt
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.connectivityservice
+
+import android.net.ConnectivityManager
+import android.net.ConnectivityManager.CALLBACK_CAP_CHANGED
+import android.net.ConnectivityManager.CALLBACK_IP_CHANGED
+import android.net.ConnectivityManager.CALLBACK_LOST
+import android.net.ConnectivityManager.NetworkCallback.DECLARED_METHODS_ALL
+import android.net.LinkAddress
+import android.net.NetworkCapabilities.NET_CAPABILITY_TEMPORARILY_NOT_METERED
+import android.net.NetworkRequest
+import android.os.Build
+import com.android.net.module.util.BitUtils.packBits
+import com.android.server.CSTest
+import com.android.server.ConnectivityService
+import com.android.server.defaultLp
+import com.android.server.defaultNc
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.RecorderCallback.CallbackEntry
+import com.android.testutils.TestableNetworkCallback
+import com.android.testutils.tryTest
+import java.util.concurrent.atomic.AtomicInteger
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.any
+import org.mockito.Mockito.anyInt
+import org.mockito.Mockito.doAnswer
+import org.mockito.Mockito.spy
+
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+@DevSdkIgnoreRunner.MonitorThreadLeak
+@RunWith(DevSdkIgnoreRunner::class)
+class CSDeclaredMethodsForCallbacksTest : CSTest() {
+    private val mockedCallbackFlags = AtomicInteger(DECLARED_METHODS_ALL)
+    private lateinit var wrappedService: ConnectivityService
+
+    private val instrumentedCm by lazy { ConnectivityManager(context, wrappedService) }
+
+    @Before
+    fun setUpWrappedService() {
+        // Mock the callback flags set by ConnectivityManager when calling ConnectivityService, to
+        // simulate methods not being overridden
+        wrappedService = spy(service)
+        doAnswer { inv ->
+            service.requestNetwork(
+                inv.getArgument(0),
+                inv.getArgument(1),
+                inv.getArgument(2),
+                inv.getArgument(3),
+                inv.getArgument(4),
+                inv.getArgument(5),
+                inv.getArgument(6),
+                inv.getArgument(7),
+                inv.getArgument(8),
+                inv.getArgument(9),
+                mockedCallbackFlags.get())
+        }.`when`(wrappedService).requestNetwork(
+            anyInt(),
+            any(),
+            anyInt(),
+            any(),
+            anyInt(),
+            any(),
+            anyInt(),
+            anyInt(),
+            any(),
+            any(),
+            anyInt()
+        )
+        doAnswer { inv ->
+            service.listenForNetwork(
+                inv.getArgument(0),
+                inv.getArgument(1),
+                inv.getArgument(2),
+                inv.getArgument(3),
+                inv.getArgument(4),
+                inv.getArgument(5),
+                mockedCallbackFlags.get()
+            )
+        }.`when`(wrappedService)
+            .listenForNetwork(any(), any(), any(), anyInt(), any(), any(), anyInt())
+    }
+
+    @Test
+    fun testCallbacksAreFiltered() {
+        val requestCb = TestableNetworkCallback()
+        val listenCb = TestableNetworkCallback()
+        mockedCallbackFlags.withFlags(CALLBACK_IP_CHANGED, CALLBACK_LOST) {
+            instrumentedCm.requestNetwork(NetworkRequest.Builder().build(), requestCb)
+        }
+        mockedCallbackFlags.withFlags(CALLBACK_CAP_CHANGED) {
+            instrumentedCm.registerNetworkCallback(NetworkRequest.Builder().build(), listenCb)
+        }
+
+        with(Agent()) {
+            connect()
+            sendLinkProperties(defaultLp().apply {
+                addLinkAddress(LinkAddress("fe80:db8::123/64"))
+            })
+            sendNetworkCapabilities(defaultNc().apply {
+                addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED)
+            })
+            disconnect()
+        }
+        waitForIdle()
+
+        // Only callbacks for the corresponding flags are called
+        requestCb.expect<CallbackEntry.LinkPropertiesChanged>()
+        requestCb.expect<CallbackEntry.Lost>()
+        requestCb.assertNoCallback(timeoutMs = 0L)
+
+        listenCb.expect<CallbackEntry.CapabilitiesChanged>()
+        listenCb.assertNoCallback(timeoutMs = 0L)
+    }
+}
+
+private fun AtomicInteger.withFlags(vararg flags: Int, action: () -> Unit) {
+    tryTest {
+        set(packBits(flags).toInt())
+        action()
+    } cleanup {
+        set(DECLARED_METHODS_ALL)
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSDestroySocketTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSDestroySocketTest.kt
new file mode 100644
index 0000000..bc5be78
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSDestroySocketTest.kt
@@ -0,0 +1,338 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.app.ActivityManager.UidFrozenStateChangedCallback
+import android.app.ActivityManager.UidFrozenStateChangedCallback.UID_FROZEN_STATE_FROZEN
+import android.app.ActivityManager.UidFrozenStateChangedCallback.UID_FROZEN_STATE_UNFROZEN
+import android.net.ConnectivityManager.BLOCKED_REASON_APP_BACKGROUND
+import android.net.ConnectivityManager.BLOCKED_REASON_NONE
+import android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND
+import android.net.ConnectivityManager.FIREWALL_RULE_ALLOW
+import android.net.ConnectivityManager.FIREWALL_RULE_DENY
+import android.net.LinkProperties
+import android.net.NetworkCapabilities
+import android.os.Build
+import com.android.net.module.util.BaseNetdUnsolicitedEventListener
+import com.android.server.connectivity.ConnectivityFlags.DELAY_DESTROY_SOCKETS
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentCaptor
+import org.mockito.Mockito.any
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.inOrder
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
+
+private const val TIMESTAMP = 1234L
+private const val TEST_UID = 1234
+private const val TEST_UID2 = 5678
+private const val TEST_CELL_IFACE = "test_rmnet"
+
+private fun cellNc() = NetworkCapabilities.Builder()
+        .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR)
+        .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+        .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED)
+        .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED)
+        .build()
+
+private fun cellLp() = LinkProperties().also{
+    it.interfaceName = TEST_CELL_IFACE
+}
+
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+class CSDestroySocketTest : CSTest() {
+    private fun getRegisteredNetdUnsolicitedEventListener(): BaseNetdUnsolicitedEventListener {
+        val captor = ArgumentCaptor.forClass(BaseNetdUnsolicitedEventListener::class.java)
+        verify(netd).registerUnsolicitedEventListener(captor.capture())
+        return captor.value
+    }
+
+    private fun getUidFrozenStateChangedCallback(): UidFrozenStateChangedCallback {
+        val captor = ArgumentCaptor.forClass(UidFrozenStateChangedCallback::class.java)
+        verify(activityManager).registerUidFrozenStateChangedCallback(any(), captor.capture())
+        return captor.value
+    }
+
+    private fun doTestBackgroundRestrictionDestroySockets(
+            restrictionWithIdleNetwork: Boolean,
+            expectDelay: Boolean
+    ) {
+        val netdEventListener = getRegisteredNetdUnsolicitedEventListener()
+        val inOrder = inOrder(destroySocketsWrapper)
+
+        val cellAgent = Agent(nc = cellNc(), lp = cellLp())
+        cellAgent.connect()
+        if (restrictionWithIdleNetwork) {
+            // Make cell default network idle
+            netdEventListener.onInterfaceClassActivityChanged(
+                    false, // isActive
+                    cellAgent.network.netId,
+                    TIMESTAMP,
+                    TEST_UID
+            )
+        }
+
+        // Set deny rule on background chain for TEST_UID
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID)
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_BACKGROUND,
+                TEST_UID,
+                FIREWALL_RULE_DENY
+        )
+        waitForIdle()
+        if (expectDelay) {
+            inOrder.verify(destroySocketsWrapper, never())
+                    .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        } else {
+            inOrder.verify(destroySocketsWrapper)
+                    .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        }
+
+        netdEventListener.onInterfaceClassActivityChanged(
+                true, // isActive
+                cellAgent.network.netId,
+                TIMESTAMP,
+                TEST_UID
+        )
+        waitForIdle()
+        if (expectDelay) {
+            inOrder.verify(destroySocketsWrapper)
+                    .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        } else {
+            inOrder.verify(destroySocketsWrapper, never())
+                    .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        }
+
+        cellAgent.disconnect()
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(DELAY_DESTROY_SOCKETS, true)])
+    fun testBackgroundAppDestroySockets() {
+        doTestBackgroundRestrictionDestroySockets(
+                restrictionWithIdleNetwork = true,
+                expectDelay = true
+        )
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(DELAY_DESTROY_SOCKETS, true)])
+    fun testBackgroundAppDestroySockets_activeNetwork() {
+        doTestBackgroundRestrictionDestroySockets(
+                restrictionWithIdleNetwork = false,
+                expectDelay = false
+        )
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(DELAY_DESTROY_SOCKETS, false)])
+    fun testBackgroundAppDestroySockets_featureIsDisabled() {
+        doTestBackgroundRestrictionDestroySockets(
+                restrictionWithIdleNetwork = true,
+                expectDelay = false
+        )
+    }
+
+    @Test
+    fun testReplaceFirewallChain() {
+        val netdEventListener = getRegisteredNetdUnsolicitedEventListener()
+        val inOrder = inOrder(destroySocketsWrapper)
+
+        val cellAgent = Agent(nc = cellNc(), lp = cellLp())
+        cellAgent.connect()
+        // Make cell default network idle
+        netdEventListener.onInterfaceClassActivityChanged(
+                false, // isActive
+                cellAgent.network.netId,
+                TIMESTAMP,
+                TEST_UID
+        )
+
+        // Set allow rule on background chain for TEST_UID
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID)
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_BACKGROUND,
+                TEST_UID,
+                FIREWALL_RULE_ALLOW
+        )
+        // Set deny rule on background chain for TEST_UID
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID2)
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_BACKGROUND,
+                TEST_UID2,
+                FIREWALL_RULE_DENY
+        )
+
+        // Put only TEST_UID2 on background chain (deny TEST_UID and allow TEST_UID2)
+        doReturn(setOf(TEST_UID))
+                .`when`(bpfNetMaps).getUidsWithAllowRuleOnAllowListChain(FIREWALL_CHAIN_BACKGROUND)
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID)
+        doReturn(BLOCKED_REASON_NONE)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID2)
+        cm.replaceFirewallChain(FIREWALL_CHAIN_BACKGROUND, intArrayOf(TEST_UID2))
+        waitForIdle()
+        inOrder.verify(destroySocketsWrapper, never())
+                .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+
+        netdEventListener.onInterfaceClassActivityChanged(
+                true, // isActive
+                cellAgent.network.netId,
+                TIMESTAMP,
+                TEST_UID
+        )
+        waitForIdle()
+        inOrder.verify(destroySocketsWrapper)
+                .destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+
+        cellAgent.disconnect()
+    }
+
+    private fun doTestDestroySockets(
+            isFrozen: Boolean,
+            denyOnBackgroundChain: Boolean,
+            enableBackgroundChain: Boolean,
+            expectDestroySockets: Boolean
+    ) {
+        val netdEventListener = getRegisteredNetdUnsolicitedEventListener()
+        val frozenStateCallback = getUidFrozenStateChangedCallback()
+
+        // Make cell default network idle
+        val cellAgent = Agent(nc = cellNc(), lp = cellLp())
+        cellAgent.connect()
+        netdEventListener.onInterfaceClassActivityChanged(
+                false, // isActive
+                cellAgent.network.netId,
+                TIMESTAMP,
+                TEST_UID
+        )
+
+        // Set deny rule on background chain for TEST_UID
+        doReturn(BLOCKED_REASON_APP_BACKGROUND)
+                .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID)
+        cm.setUidFirewallRule(
+                FIREWALL_CHAIN_BACKGROUND,
+                TEST_UID,
+                FIREWALL_RULE_DENY
+        )
+
+        // Freeze TEST_UID
+        frozenStateCallback.onUidFrozenStateChanged(
+                intArrayOf(TEST_UID),
+                intArrayOf(UID_FROZEN_STATE_FROZEN)
+        )
+
+        if (!isFrozen) {
+            // Unfreeze TEST_UID
+            frozenStateCallback.onUidFrozenStateChanged(
+                    intArrayOf(TEST_UID),
+                    intArrayOf(UID_FROZEN_STATE_UNFROZEN)
+            )
+        }
+        if (!enableBackgroundChain) {
+            // Disable background chain
+            cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, false)
+        }
+        if (!denyOnBackgroundChain) {
+            // Set allow rule on background chain for TEST_UID
+            doReturn(BLOCKED_REASON_NONE)
+                    .`when`(bpfNetMaps).getUidNetworkingBlockedReasons(TEST_UID)
+            cm.setUidFirewallRule(
+                    FIREWALL_CHAIN_BACKGROUND,
+                    TEST_UID,
+                    FIREWALL_RULE_ALLOW
+            )
+        }
+        verify(destroySocketsWrapper, never()).destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+
+        // Make cell network active
+        netdEventListener.onInterfaceClassActivityChanged(
+                true, // isActive
+                cellAgent.network.netId,
+                TIMESTAMP,
+                TEST_UID
+        )
+        waitForIdle()
+
+        if (expectDestroySockets) {
+            verify(destroySocketsWrapper).destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        } else {
+            verify(destroySocketsWrapper, never()).destroyLiveTcpSocketsByOwnerUids(setOf(TEST_UID))
+        }
+    }
+
+    @Test
+    fun testDestroySockets_backgroundDeny_frozen() {
+        doTestDestroySockets(
+                isFrozen = true,
+                denyOnBackgroundChain = true,
+                enableBackgroundChain = true,
+                expectDestroySockets = true
+        )
+    }
+
+    @Test
+    fun testDestroySockets_backgroundDeny_nonFrozen() {
+        doTestDestroySockets(
+                isFrozen = false,
+                denyOnBackgroundChain = true,
+                enableBackgroundChain = true,
+                expectDestroySockets = true
+        )
+    }
+
+    @Test
+    fun testDestroySockets_backgroundAllow_frozen() {
+        doTestDestroySockets(
+                isFrozen = true,
+                denyOnBackgroundChain = false,
+                enableBackgroundChain = true,
+                expectDestroySockets = true
+        )
+    }
+
+    @Test
+    fun testDestroySockets_backgroundAllow_nonFrozen() {
+        // If the app is neither frozen nor under background restriction, sockets are not
+        // destroyed
+        doTestDestroySockets(
+                isFrozen = false,
+                denyOnBackgroundChain = false,
+                enableBackgroundChain = true,
+                expectDestroySockets = false
+        )
+    }
+
+    @Test
+    fun testDestroySockets_backgroundChainDisabled_nonFrozen() {
+        // If the app is neither frozen nor under background restriction, sockets are not
+        // destroyed
+        doTestDestroySockets(
+                isFrozen = false,
+                denyOnBackgroundChain = true,
+                enableBackgroundChain = false,
+                expectDestroySockets = false
+        )
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSFirewallChainTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSFirewallChainTest.kt
new file mode 100644
index 0000000..83ccccd
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSFirewallChainTest.kt
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.net.BpfNetMapsConstants.METERED_ALLOW_CHAINS
+import android.net.BpfNetMapsConstants.METERED_DENY_CHAINS
+import android.net.ConnectivityManager.FIREWALL_CHAIN_BACKGROUND
+import android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_ALLOW
+import android.net.ConnectivityManager.FIREWALL_CHAIN_METERED_DENY_USER
+import android.net.ConnectivityManager.FIREWALL_RULE_ALLOW
+import android.net.ConnectivityManager.FIREWALL_RULE_DEFAULT
+import android.net.ConnectivityManager.FIREWALL_RULE_DENY
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.server.connectivity.ConnectivityFlags.BACKGROUND_FIREWALL_CHAIN
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.assertThrows
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.anyBoolean
+import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.Mockito.any
+import org.mockito.Mockito.clearInvocations
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
+
+@RunWith(DevSdkIgnoreRunner::class)
+@SmallTest
+@IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class CSFirewallChainTest : CSTest() {
+    @get:Rule
+    val ignoreRule = DevSdkIgnoreRule()
+
+    // Tests for setFirewallChainEnabled on FIREWALL_CHAIN_BACKGROUND
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, false)])
+    fun setFirewallChainEnabled_backgroundChainDisabled() {
+        verifySetFirewallChainEnabledOnBackgroundDoesNothing()
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun setFirewallChainEnabled_backgroundChainEnabled_afterU() {
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, true)
+        verify(bpfNetMaps).setChildChain(FIREWALL_CHAIN_BACKGROUND, true)
+
+        clearInvocations(bpfNetMaps)
+
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, false)
+        verify(bpfNetMaps).setChildChain(FIREWALL_CHAIN_BACKGROUND, false)
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun setFirewallChainEnabled_backgroundChainEnabled_uptoU() {
+        verifySetFirewallChainEnabledOnBackgroundDoesNothing()
+    }
+
+    private fun verifySetFirewallChainEnabledOnBackgroundDoesNothing() {
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, true)
+        verify(bpfNetMaps, never()).setChildChain(anyInt(), anyBoolean())
+
+        cm.setFirewallChainEnabled(FIREWALL_CHAIN_BACKGROUND, false)
+        verify(bpfNetMaps, never()).setChildChain(anyInt(), anyBoolean())
+    }
+
+    // Tests for replaceFirewallChain on FIREWALL_CHAIN_BACKGROUND
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, false)])
+    fun replaceFirewallChain_backgroundChainDisabled() {
+        verifyReplaceFirewallChainOnBackgroundDoesNothing()
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun replaceFirewallChain_backgroundChainEnabled_afterU() {
+        val uids = intArrayOf(53, 42, 79)
+        cm.replaceFirewallChain(FIREWALL_CHAIN_BACKGROUND, uids)
+        verify(bpfNetMaps).replaceUidChain(FIREWALL_CHAIN_BACKGROUND, uids)
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun replaceFirewallChain_backgroundChainEnabled_uptoU() {
+        verifyReplaceFirewallChainOnBackgroundDoesNothing()
+    }
+
+    private fun verifyReplaceFirewallChainOnBackgroundDoesNothing() {
+        val uids = intArrayOf(53, 42, 79)
+        cm.replaceFirewallChain(FIREWALL_CHAIN_BACKGROUND, uids)
+        verify(bpfNetMaps, never()).replaceUidChain(anyInt(), any(IntArray::class.java))
+    }
+
+    // Tests for setUidFirewallRule on FIREWALL_CHAIN_BACKGROUND
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, false)])
+    fun setUidFirewallRule_backgroundChainDisabled() {
+        verifySetUidFirewallRuleOnBackgroundDoesNothing()
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun setUidFirewallRule_backgroundChainEnabled_afterU() {
+        val uid = 2345
+
+        cm.setUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_DEFAULT)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_DENY)
+
+        clearInvocations(bpfNetMaps)
+
+        cm.setUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_DENY)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_DENY)
+
+        clearInvocations(bpfNetMaps)
+
+        cm.setUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_ALLOW)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_BACKGROUND, uid, FIREWALL_RULE_ALLOW)
+    }
+
+    @Test
+    @FeatureFlags(flags = [Flag(BACKGROUND_FIREWALL_CHAIN, true)])
+    @IgnoreAfter(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun setUidFirewallRule_backgroundChainEnabled_uptoU() {
+        verifySetUidFirewallRuleOnBackgroundDoesNothing()
+    }
+
+    private fun verifySetUidFirewallRuleOnBackgroundDoesNothing() {
+        val uid = 2345
+
+        listOf(FIREWALL_RULE_DEFAULT, FIREWALL_RULE_ALLOW, FIREWALL_RULE_DENY).forEach { rule ->
+            cm.setUidFirewallRule(FIREWALL_CHAIN_BACKGROUND, uid, rule)
+            verify(bpfNetMaps, never()).setUidRule(anyInt(), anyInt(), anyInt())
+        }
+    }
+
+    @Test
+    fun testSetFirewallChainEnabled_meteredChain() {
+        (METERED_ALLOW_CHAINS + METERED_DENY_CHAINS).forEach {
+            assertThrows(UnsupportedOperationException::class.java) {
+                cm.setFirewallChainEnabled(it, true)
+            }
+            assertThrows(UnsupportedOperationException::class.java) {
+                cm.setFirewallChainEnabled(it, false)
+            }
+        }
+    }
+
+    @Test
+    fun testAddUidToMeteredNetworkAllowList() {
+        val uid = 1001
+        cm.addUidToMeteredNetworkAllowList(uid)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_ALLOW)
+    }
+
+    @Test
+    fun testRemoveUidFromMeteredNetworkAllowList() {
+        val uid = 1001
+        cm.removeUidFromMeteredNetworkAllowList(uid)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_METERED_ALLOW, uid, FIREWALL_RULE_DENY)
+    }
+
+    @Test
+    fun testAddUidToMeteredNetworkDenyList() {
+        val uid = 1001
+        cm.addUidToMeteredNetworkDenyList(uid)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_DENY)
+    }
+
+    @Test
+    fun testRemoveUidFromMeteredNetworkDenyList() {
+        val uid = 1001
+        cm.removeUidFromMeteredNetworkDenyList(uid)
+        verify(bpfNetMaps).setUidRule(FIREWALL_CHAIN_METERED_DENY_USER, uid, FIREWALL_RULE_ALLOW)
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSIngressDiscardRuleTests.kt b/tests/unit/java/com/android/server/connectivityservice/CSIngressDiscardRuleTests.kt
new file mode 100644
index 0000000..93f6e81
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSIngressDiscardRuleTests.kt
@@ -0,0 +1,313 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.net.InetAddresses
+import android.net.LinkAddress
+import android.net.LinkProperties
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN
+import android.net.NetworkCapabilities.TRANSPORT_VPN
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkRequest
+import android.net.VpnManager.TYPE_VPN_SERVICE
+import android.net.VpnTransportInfo
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.server.connectivity.ConnectivityFlags
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
+import com.android.testutils.TestableNetworkCallback
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.InOrder
+import org.mockito.Mockito.inOrder
+import org.mockito.Mockito.never
+import org.mockito.Mockito.timeout
+import org.mockito.Mockito.verify
+
+private const val VPN_IFNAME = "tun10041"
+private const val VPN_IFNAME2 = "tun10042"
+private const val WIFI_IFNAME = "wlan0"
+private const val TIMEOUT_MS = 1_000L
+private const val LONG_TIMEOUT_MS = 5_000
+
+private fun vpnNc() = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_VPN)
+        .removeCapability(NET_CAPABILITY_NOT_VPN)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .setTransportInfo(
+                VpnTransportInfo(
+                        TYPE_VPN_SERVICE,
+                        "MySession12345",
+                        false /* bypassable */,
+                        false /* longLivedTcpConnectionsExpensive */
+                )
+        )
+        .build()
+
+private fun wifiNc() = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .addCapability(NET_CAPABILITY_INTERNET)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .build()
+
+private fun nr(transport: Int) = NetworkRequest.Builder()
+        .clearCapabilities()
+        .addTransportType(transport).apply {
+            if (transport != TRANSPORT_VPN) {
+                addCapability(NET_CAPABILITY_NOT_VPN)
+            }
+        }.build()
+
+private fun lp(iface: String, vararg linkAddresses: LinkAddress) = LinkProperties().apply {
+    interfaceName = iface
+    for (linkAddress in linkAddresses) {
+        addLinkAddress(linkAddress)
+    }
+}
+
+@RunWith(DevSdkIgnoreRunner::class)
+@SmallTest
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class CSIngressDiscardRuleTests : CSTest() {
+    private val IPV6_ADDRESS = InetAddresses.parseNumericAddress("2001:db8:1::1")
+    private val IPV6_LINK_ADDRESS = LinkAddress(IPV6_ADDRESS, 64)
+    private val IPV6_ADDRESS2 = InetAddresses.parseNumericAddress("2001:db8:1::2")
+    private val IPV6_LINK_ADDRESS2 = LinkAddress(IPV6_ADDRESS2, 64)
+    private val IPV6_ADDRESS3 = InetAddresses.parseNumericAddress("2001:db8:1::3")
+    private val IPV6_LINK_ADDRESS3 = LinkAddress(IPV6_ADDRESS3, 64)
+    private val LOCAL_IPV6_ADDRRESS = InetAddresses.parseNumericAddress("fe80::1234")
+    private val LOCAL_IPV6_LINK_ADDRRESS = LinkAddress(LOCAL_IPV6_ADDRRESS, 64)
+
+    fun verifyNoMoreIngressDiscardRuleChange(inorder: InOrder) {
+        inorder.verify(bpfNetMaps, never()).setIngressDiscardRule(any(), any())
+        inorder.verify(bpfNetMaps, never()).removeIngressDiscardRule(any())
+    }
+
+    @Test
+    fun testVpnIngressDiscardRule_UpdateVpnAddress() {
+        // non-VPN network whose address will be not duplicated with VPN address
+        val wifiNc = wifiNc()
+        val wifiLp = lp(WIFI_IFNAME, IPV6_LINK_ADDRESS3)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+
+        val nr = nr(TRANSPORT_VPN)
+        val cb = TestableNetworkCallback()
+        cm.registerNetworkCallback(nr, cb)
+        val nc = vpnNc()
+        val lp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val agent = Agent(nc = nc, lp = lp)
+        agent.connect()
+        cb.expectAvailableCallbacks(agent.network, validated = false)
+
+        // IngressDiscardRule is added to the VPN address
+        verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+        verify(bpfNetMaps, never()).setIngressDiscardRule(LOCAL_IPV6_ADDRRESS, VPN_IFNAME)
+
+        // The VPN address is changed
+        val newLp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS2, LOCAL_IPV6_LINK_ADDRRESS)
+        agent.sendLinkProperties(newLp)
+        cb.expect<LinkPropertiesChanged>(agent.network)
+
+        // IngressDiscardRule is removed from the old VPN address and added to the new VPN address
+        verify(bpfNetMaps).removeIngressDiscardRule(IPV6_ADDRESS)
+        verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS2, VPN_IFNAME)
+        verify(bpfNetMaps, never()).setIngressDiscardRule(LOCAL_IPV6_ADDRRESS, VPN_IFNAME)
+
+        agent.disconnect()
+        verify(bpfNetMaps, timeout(TIMEOUT_MS)).removeIngressDiscardRule(IPV6_ADDRESS2)
+
+        cm.unregisterNetworkCallback(cb)
+    }
+
+    @Test
+    fun testVpnIngressDiscardRule_UpdateInterfaceName() {
+        val inorder = inOrder(bpfNetMaps)
+
+        val nr = nr(TRANSPORT_VPN)
+        val cb = TestableNetworkCallback()
+        cm.registerNetworkCallback(nr, cb)
+        val nc = vpnNc()
+        val lp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val agent = Agent(nc = nc, lp = lp)
+        agent.connect()
+        cb.expectAvailableCallbacks(agent.network, validated = false)
+
+        // IngressDiscardRule is added to the VPN address
+        inorder.verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        // The VPN interface name is changed
+        val newlp = lp(VPN_IFNAME2, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        agent.sendLinkProperties(newlp)
+        cb.expect<LinkPropertiesChanged>(agent.network)
+
+        // IngressDiscardRule is updated with the new interface name
+        inorder.verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME2)
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        agent.disconnect()
+        inorder.verify(bpfNetMaps, timeout(TIMEOUT_MS)).removeIngressDiscardRule(IPV6_ADDRESS)
+
+        cm.unregisterNetworkCallback(cb)
+    }
+
+    @Test
+    fun testVpnIngressDiscardRule_DuplicatedIpAddress_UpdateVpnAddress() {
+        val inorder = inOrder(bpfNetMaps)
+
+        val wifiNc = wifiNc()
+        val wifiLp = lp(WIFI_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+
+        // IngressDiscardRule is not added to non-VPN interfaces
+        inorder.verify(bpfNetMaps, never()).setIngressDiscardRule(any(), any())
+
+        val nr = nr(TRANSPORT_VPN)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+        val vpnNc = vpnNc()
+        val vpnLp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val vpnAgent = Agent(nc = vpnNc, lp = vpnLp)
+        vpnAgent.connect()
+        cb.expectAvailableCallbacks(vpnAgent.network, validated = false)
+
+        // IngressDiscardRule is not added since the VPN address is duplicated with the Wi-Fi
+        // address
+        inorder.verify(bpfNetMaps, never()).setIngressDiscardRule(any(), any())
+
+        // The VPN address is changed to a different address from the Wi-Fi interface
+        val newVpnlp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS2, LOCAL_IPV6_LINK_ADDRRESS)
+        vpnAgent.sendLinkProperties(newVpnlp)
+
+        // IngressDiscardRule is added to the VPN address since the VPN address is not duplicated
+        // with the Wi-Fi address
+        cb.expect<LinkPropertiesChanged>(vpnAgent.network)
+        inorder.verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS2, VPN_IFNAME)
+
+        // The VPN address is changed back to the same address as the Wi-Fi interface
+        vpnAgent.sendLinkProperties(vpnLp)
+        cb.expect<LinkPropertiesChanged>(vpnAgent.network)
+
+        // IngressDiscardRule for IPV6_ADDRESS2 is removed but IngressDiscardRule for
+        // IPV6_LINK_ADDRESS is not added since Wi-Fi also uses IPV6_LINK_ADDRESS
+        inorder.verify(bpfNetMaps).removeIngressDiscardRule(IPV6_ADDRESS2)
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        vpnAgent.disconnect()
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        cm.unregisterNetworkCallback(cb)
+    }
+
+    @Test
+    fun testVpnIngressDiscardRule_DuplicatedIpAddress_UpdateNonVpnAddress() {
+        val inorder = inOrder(bpfNetMaps)
+
+        val vpnNc = vpnNc()
+        val vpnLp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val vpnAgent = Agent(nc = vpnNc, lp = vpnLp)
+        vpnAgent.connect()
+
+        // IngressDiscardRule is added to the VPN address
+        inorder.verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+        val wifiNc = wifiNc()
+        val wifiLp = lp(WIFI_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // IngressDiscardRule is removed since the VPN address is duplicated with the Wi-Fi address
+        inorder.verify(bpfNetMaps).removeIngressDiscardRule(IPV6_ADDRESS)
+
+        // The Wi-Fi address is changed to a different address from the VPN interface
+        val newWifilp = lp(WIFI_IFNAME, IPV6_LINK_ADDRESS2, LOCAL_IPV6_LINK_ADDRRESS)
+        wifiAgent.sendLinkProperties(newWifilp)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // IngressDiscardRule is added to the VPN address since the VPN address is not duplicated
+        // with the Wi-Fi address
+        inorder.verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+        verifyNoMoreIngressDiscardRuleChange(inorder)
+
+        // The Wi-Fi address is changed back to the same address as the VPN interface
+        wifiAgent.sendLinkProperties(wifiLp)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // IngressDiscardRule is removed since the VPN address is duplicated with the Wi-Fi address
+        inorder.verify(bpfNetMaps).removeIngressDiscardRule(IPV6_ADDRESS)
+
+        // IngressDiscardRule is added to the VPN address since Wi-Fi is disconnected
+        wifiAgent.disconnect()
+        inorder.verify(bpfNetMaps, timeout(TIMEOUT_MS))
+                .setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+
+        vpnAgent.disconnect()
+        inorder.verify(bpfNetMaps, timeout(TIMEOUT_MS)).removeIngressDiscardRule(IPV6_ADDRESS)
+
+        cm.unregisterNetworkCallback(cb)
+    }
+
+    @Test
+    fun testVpnIngressDiscardRule_UnregisterAfterReplacement() {
+        val wifiNc = wifiNc()
+        val wifiLp = lp(WIFI_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        wifiAgent.unregisterAfterReplacement(LONG_TIMEOUT_MS)
+        waitForIdle()
+
+        val vpnNc = vpnNc()
+        val vpnLp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val vpnAgent = Agent(nc = vpnNc, lp = vpnLp)
+        vpnAgent.connect()
+
+        // IngressDiscardRule is added since the Wi-Fi network is destroyed
+        verify(bpfNetMaps).setIngressDiscardRule(IPV6_ADDRESS, VPN_IFNAME)
+
+        // IngressDiscardRule is removed since the VPN network is destroyed
+        vpnAgent.unregisterAfterReplacement(LONG_TIMEOUT_MS)
+        waitForIdle()
+        verify(bpfNetMaps).removeIngressDiscardRule(IPV6_ADDRESS)
+    }
+
+    @Test @FeatureFlags([Flag(ConnectivityFlags.INGRESS_TO_VPN_ADDRESS_FILTERING, false)])
+    fun testVpnIngressDiscardRule_FeatureDisabled() {
+        val nr = nr(TRANSPORT_VPN)
+        val cb = TestableNetworkCallback()
+        cm.registerNetworkCallback(nr, cb)
+        val nc = vpnNc()
+        val lp = lp(VPN_IFNAME, IPV6_LINK_ADDRESS, LOCAL_IPV6_LINK_ADDRRESS)
+        val agent = Agent(nc = nc, lp = lp)
+        agent.connect()
+        cb.expectAvailableCallbacks(agent.network, validated = false)
+
+        // IngressDiscardRule should not be added since feature is disabled
+        verify(bpfNetMaps, never()).setIngressDiscardRule(any(), any())
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt b/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
index c1730a4..83fff87 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
@@ -38,6 +38,7 @@
 import android.net.NetworkScore.KEEP_CONNECTED_FOR_TEST
 import android.net.NetworkScore.KEEP_CONNECTED_LOCAL_NETWORK
 import android.net.RouteInfo
+import android.net.connectivity.ConnectivityCompatChanges.ENABLE_MATCH_LOCAL_NETWORK
 import android.os.Build
 import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRunner
@@ -47,12 +48,15 @@
 import kotlin.test.assertFailsWith
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.any
 import org.mockito.Mockito.clearInvocations
 import org.mockito.Mockito.eq
 import org.mockito.Mockito.inOrder
 import org.mockito.Mockito.never
 import org.mockito.Mockito.timeout
+import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
+import org.mockito.Mockito.verifyNoMoreInteractions
 
 private const val TIMEOUT_MS = 200L
 private const val MEDIUM_TIMEOUT_MS = 1_000L
@@ -88,10 +92,10 @@
 class CSLocalAgentTests : CSTest() {
     val multicastRoutingConfigMinScope =
                 MulticastRoutingConfig.Builder(MulticastRoutingConfig.FORWARD_WITH_MIN_SCOPE, 4)
-                .build();
+                .build()
     val multicastRoutingConfigSelected =
                 MulticastRoutingConfig.Builder(MulticastRoutingConfig.FORWARD_SELECTED)
-                .build();
+                .build()
     val upstreamSelectorAny = NetworkRequest.Builder()
                 .addForbiddenCapability(NET_CAPABILITY_LOCAL_NETWORK)
                 .build()
@@ -205,6 +209,9 @@
                 nc = nc(TRANSPORT_THREAD, NET_CAPABILITY_LOCAL_NETWORK),
                 lp = lp(name),
                 lnc = localNetworkConfig,
+                score = FromS(NetworkScore.Builder()
+                        .setKeepConnectedReason(KEEP_CONNECTED_LOCAL_NETWORK)
+                        .build())
         )
         return localAgent
     }
@@ -219,9 +226,12 @@
                 nc = nc(TRANSPORT_CELLULAR, NET_CAPABILITY_INTERNET))
     }
 
-    private fun sendLocalNetworkConfig(localAgent: CSAgentWrapper,
-                upstreamSelector: NetworkRequest?, upstreamConfig: MulticastRoutingConfig,
-                downstreamConfig: MulticastRoutingConfig) {
+    private fun sendLocalNetworkConfig(
+            localAgent: CSAgentWrapper,
+            upstreamSelector: NetworkRequest?,
+            upstreamConfig: MulticastRoutingConfig,
+            downstreamConfig: MulticastRoutingConfig
+    ) {
         val newLnc = LocalNetworkConfig.Builder()
                 .setUpstreamSelector(upstreamSelector)
                 .setUpstreamMulticastRoutingConfig(upstreamConfig)
@@ -458,7 +468,6 @@
         wifiAgent.disconnect()
     }
 
-
     @Test
     fun testUnregisterUpstreamAfterReplacement_SameIfaceName() {
         doTestUnregisterUpstreamAfterReplacement(true)
@@ -824,4 +833,59 @@
 
         listenCb.expect<Lost>()
     }
+
+    fun doTestLocalNetworkRequest(
+            request: NetworkRequest,
+            enableMatchLocalNetwork: Boolean,
+            expectCallback: Boolean
+    ) {
+        deps.setBuildSdk(VERSION_V)
+        deps.setChangeIdEnabled(enableMatchLocalNetwork, ENABLE_MATCH_LOCAL_NETWORK)
+
+        val requestCb = TestableNetworkCallback()
+        val listenCb = TestableNetworkCallback()
+        cm.requestNetwork(request, requestCb)
+        cm.registerNetworkCallback(request, listenCb)
+
+        val localAgent = createLocalAgent("local0", FromS(LocalNetworkConfig.Builder().build()))
+        localAgent.connect()
+
+        if (expectCallback) {
+            requestCb.expectAvailableCallbacks(localAgent.network, validated = false)
+            listenCb.expectAvailableCallbacks(localAgent.network, validated = false)
+        } else {
+            waitForIdle()
+            requestCb.assertNoCallback(timeoutMs = 0)
+            listenCb.assertNoCallback(timeoutMs = 0)
+        }
+        localAgent.disconnect()
+    }
+
+    @Test
+    fun testLocalNetworkRequest() {
+        val request = NetworkRequest.Builder().build()
+        // If ENABLE_MATCH_LOCAL_NETWORK is false, request is not satisfied by local network
+        doTestLocalNetworkRequest(
+                request,
+                enableMatchLocalNetwork = false,
+                expectCallback = false)
+        // If ENABLE_MATCH_LOCAL_NETWORK is true, request is satisfied by local network
+        doTestLocalNetworkRequest(
+                request,
+                enableMatchLocalNetwork = true,
+                expectCallback = true)
+    }
+
+    @Test
+    fun testLocalNetworkRequest_withCapability() {
+        val request = NetworkRequest.Builder().addCapability(NET_CAPABILITY_LOCAL_NETWORK).build()
+        doTestLocalNetworkRequest(
+                request,
+                enableMatchLocalNetwork = false,
+                expectCallback = true)
+        doTestLocalNetworkRequest(
+                request,
+                enableMatchLocalNetwork = true,
+                expectCallback = true)
+    }
 }
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkFallbackTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkTest.kt
similarity index 69%
rename from tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkFallbackTest.kt
rename to tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkTest.kt
index 9024641..88c2738 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkFallbackTest.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSSatelliteNetworkTest.kt
@@ -24,6 +24,7 @@
 import android.net.NativeNetworkType
 import android.net.NetworkCapabilities
 import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED
@@ -41,10 +42,13 @@
 import android.util.ArraySet
 import com.android.net.module.util.CollectionUtils
 import com.android.server.ConnectivityService.PREFERENCE_ORDER_SATELLITE_FALLBACK
+import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.TestableNetworkCallback
 import com.android.testutils.visibleOnHandlerThread
 import org.junit.Assert
+import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.mockito.ArgumentMatchers.any
@@ -61,7 +65,10 @@
 @DevSdkIgnoreRunner.MonitorThreadLeak
 @RunWith(DevSdkIgnoreRunner::class)
 @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
-class CSSatelliteNetworkPreferredTest : CSTest() {
+class CSSatelliteNetworkTest : CSTest() {
+    @get:Rule
+    val ignoreRule = DevSdkIgnoreRule()
+
     /**
      * Test createMultiLayerNrisFromSatelliteNetworkPreferredUids returns correct
      * NetworkRequestInfo.
@@ -80,54 +87,81 @@
     }
 
     /**
-     * Test that SATELLITE_NETWORK_PREFERENCE_UIDS changes will send correct net id and uid ranges
-     * to netd.
+     * Test that satellite network satisfies satellite fallback per-app default network request and
+     * send correct net id and uid ranges to netd.
      */
-    @Test
-    fun testSatelliteNetworkPreferredUidsChanged() {
+    private fun doTestSatelliteNetworkFallbackUids(restricted: Boolean) {
         val netdInOrder = inOrder(netd)
 
-        val satelliteAgent = createSatelliteAgent("satellite0")
+        val satelliteAgent = createSatelliteAgent("satellite0", restricted)
         satelliteAgent.connect()
 
         val satelliteNetId = satelliteAgent.network.netId
+        val permission = if (restricted) {INetd.PERMISSION_SYSTEM} else {INetd.PERMISSION_NONE}
         netdInOrder.verify(netd).networkCreate(
-            nativeNetworkConfigPhysical(satelliteNetId, INetd.PERMISSION_NONE))
+            nativeNetworkConfigPhysical(satelliteNetId, permission))
 
         val uid1 = PRIMARY_USER_HANDLE.getUid(TEST_PACKAGE_UID)
         val uid2 = PRIMARY_USER_HANDLE.getUid(TEST_PACKAGE_UID2)
         val uid3 = SECONDARY_USER_HANDLE.getUid(TEST_PACKAGE_UID)
 
-        // Initial satellite network preferred uids status.
-        setAndUpdateSatelliteNetworkPreferredUids(setOf())
+        // Initial satellite network fallback uids status.
+        updateSatelliteNetworkFallbackUids(setOf())
         netdInOrder.verify(netd, never()).networkAddUidRangesParcel(any())
         netdInOrder.verify(netd, never()).networkRemoveUidRangesParcel(any())
 
-        // Set SATELLITE_NETWORK_PREFERENCE_UIDS setting and verify that net id and uid ranges
-        // send to netd
+        // Update satellite network fallback uids and verify that net id and uid ranges send to netd
         var uids = mutableSetOf(uid1, uid2, uid3)
         val uidRanges1 = toUidRangeStableParcels(uidRangesForUids(uids))
         val config1 = NativeUidRangeConfig(
             satelliteNetId, uidRanges1,
             PREFERENCE_ORDER_SATELLITE_FALLBACK
         )
-        setAndUpdateSatelliteNetworkPreferredUids(uids)
+        updateSatelliteNetworkFallbackUids(uids)
         netdInOrder.verify(netd).networkAddUidRangesParcel(config1)
         netdInOrder.verify(netd, never()).networkRemoveUidRangesParcel(any())
 
-        // Set SATELLITE_NETWORK_PREFERENCE_UIDS setting again and verify that old rules are removed
-        // and new rules are added.
+        // Update satellite network fallback uids and verify that net id and uid ranges send to netd
         uids = mutableSetOf(uid1)
         val uidRanges2: Array<UidRangeParcel?> = toUidRangeStableParcels(uidRangesForUids(uids))
         val config2 = NativeUidRangeConfig(
             satelliteNetId, uidRanges2,
             PREFERENCE_ORDER_SATELLITE_FALLBACK
         )
-        setAndUpdateSatelliteNetworkPreferredUids(uids)
+        updateSatelliteNetworkFallbackUids(uids)
         netdInOrder.verify(netd).networkRemoveUidRangesParcel(config1)
         netdInOrder.verify(netd).networkAddUidRangesParcel(config2)
     }
 
+    @Test
+    fun testSatelliteNetworkFallbackUids_restricted() {
+        doTestSatelliteNetworkFallbackUids(restricted = true)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun testSatelliteNetworkFallbackUids_nonRestricted() {
+        doTestSatelliteNetworkFallbackUids(restricted = false)
+    }
+
+    private fun doTestSatelliteNeverBecomeDefaultNetwork(restricted: Boolean) {
+        val agent = createSatelliteAgent("satellite0", restricted)
+        agent.connect()
+        val defaultCb = TestableNetworkCallback()
+        cm.registerDefaultNetworkCallback(defaultCb)
+        // Satellite network must not become the default network
+        defaultCb.assertNoCallback()
+    }
+
+    @Test
+    fun testSatelliteNeverBecomeDefaultNetwork_restricted() {
+        doTestSatelliteNeverBecomeDefaultNetwork(restricted = true)
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+    fun testSatelliteNeverBecomeDefaultNetwork_notRestricted() {
+        doTestSatelliteNeverBecomeDefaultNetwork(restricted = false)
+    }
+
     private fun assertCreateMultiLayerNrisFromSatelliteNetworkPreferredUids(uids: Set<Int>) {
         val nris: Set<ConnectivityService.NetworkRequestInfo> =
             service.createMultiLayerNrisFromSatelliteNetworkFallbackUids(uids)
@@ -140,7 +174,7 @@
         assertEquals(PREFERENCE_ORDER_SATELLITE_FALLBACK, nri.mPreferenceOrder)
     }
 
-    private fun setAndUpdateSatelliteNetworkPreferredUids(uids: Set<Int>) {
+    private fun updateSatelliteNetworkFallbackUids(uids: Set<Int>) {
         visibleOnHandlerThread(csHandler) {
             deps.satelliteNetworkFallbackUidUpdate!!.accept(uids)
         }
@@ -150,9 +184,9 @@
         NativeNetworkConfig(netId, NativeNetworkType.PHYSICAL, permission,
             false /* secure */, VpnManager.TYPE_VPN_NONE, false /* excludeLocalRoutes */)
 
-    private fun createSatelliteAgent(name: String): CSAgentWrapper {
+    private fun createSatelliteAgent(name: String, restricted: Boolean = true): CSAgentWrapper {
         return Agent(score = keepScore(), lp = lp(name),
-            nc = nc(TRANSPORT_SATELLITE, NET_CAPABILITY_INTERNET)
+            nc = satelliteNc(restricted)
         )
     }
 
@@ -176,17 +210,19 @@
         return uidRangesForUids(*CollectionUtils.toIntArray(uids))
     }
 
-    private fun nc(transport: Int, vararg caps: Int) = NetworkCapabilities.Builder().apply {
-        addTransportType(transport)
-        caps.forEach {
-            addCapability(it)
-        }
-        // Useful capabilities for everybody
-        addCapability(NET_CAPABILITY_NOT_RESTRICTED)
-        addCapability(NET_CAPABILITY_NOT_SUSPENDED)
-        addCapability(NET_CAPABILITY_NOT_ROAMING)
-        addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
-    }.build()
+    private fun satelliteNc(restricted: Boolean) =
+            NetworkCapabilities.Builder().apply {
+                addTransportType(TRANSPORT_SATELLITE)
+
+                addCapability(NET_CAPABILITY_INTERNET)
+                addCapability(NET_CAPABILITY_NOT_SUSPENDED)
+                addCapability(NET_CAPABILITY_NOT_ROAMING)
+                addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+                if (restricted) {
+                    removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                }
+                removeCapability(NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED)
+            }.build()
 
     private fun lp(iface: String) = LinkProperties().apply {
         interfaceName = iface
diff --git a/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt b/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
index d7343b1..13c5cbc 100644
--- a/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/base/CSAgentWrapper.kt
@@ -28,6 +28,7 @@
 import android.net.NetworkAgent
 import android.net.NetworkAgentConfig
 import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED
 import android.net.NetworkCapabilities.TRANSPORT_CELLULAR
 import android.net.NetworkProvider
@@ -39,6 +40,9 @@
 import com.android.testutils.RecorderCallback.CallbackEntry.Available
 import com.android.testutils.RecorderCallback.CallbackEntry.Lost
 import com.android.testutils.TestableNetworkCallback
+import java.util.concurrent.atomic.AtomicInteger
+import kotlin.test.assertEquals
+import kotlin.test.fail
 import org.mockito.ArgumentCaptor
 import org.mockito.ArgumentMatchers.any
 import org.mockito.ArgumentMatchers.anyInt
@@ -46,9 +50,6 @@
 import org.mockito.Mockito.doNothing
 import org.mockito.Mockito.verify
 import org.mockito.stubbing.Answer
-import java.util.concurrent.atomic.AtomicInteger
-import kotlin.test.assertEquals
-import kotlin.test.fail
 
 const val SHORT_TIMEOUT_MS = 200L
 
@@ -140,6 +141,9 @@
         val request = NetworkRequest.Builder().apply {
             clearCapabilities()
             if (nc.transportTypes.isNotEmpty()) addTransportType(nc.transportTypes[0])
+            if (nc.hasCapability(NET_CAPABILITY_LOCAL_NETWORK)) {
+                addCapability(NET_CAPABILITY_LOCAL_NETWORK)
+            }
         }.build()
         val cb = TestableNetworkCallback()
         mgr.registerNetworkCallback(request, cb)
@@ -166,6 +170,9 @@
         val request = NetworkRequest.Builder().apply {
             clearCapabilities()
             if (nc.transportTypes.isNotEmpty()) addTransportType(nc.transportTypes[0])
+            if (nc.hasCapability(NET_CAPABILITY_LOCAL_NETWORK)) {
+                addCapability(NET_CAPABILITY_LOCAL_NETWORK)
+            }
         }.build()
         val cb = TestableNetworkCallback(timeoutMs = SHORT_TIMEOUT_MS)
         mgr.registerNetworkCallback(request, cb)
@@ -178,6 +185,7 @@
 
     fun sendLocalNetworkConfig(lnc: LocalNetworkConfig) = agent.sendLocalNetworkConfig(lnc)
     fun sendNetworkCapabilities(nc: NetworkCapabilities) = agent.sendNetworkCapabilities(nc)
+    fun sendLinkProperties(lp: LinkProperties) = agent.sendLinkProperties(lp)
 
     fun connectWithCaptivePortal(redirectUrl: String) {
         setCaptivePortal(redirectUrl)
diff --git a/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt b/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
index 595ca47..ed72fd2 100644
--- a/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
@@ -17,6 +17,7 @@
 package com.android.server
 
 import android.app.AlarmManager
+import android.app.AppOpsManager
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -26,6 +27,7 @@
 import android.content.res.Resources
 import android.net.ConnectivityManager
 import android.net.INetd
+import android.net.INetd.PERMISSION_INTERNET
 import android.net.InetAddresses
 import android.net.LinkProperties
 import android.net.LocalNetworkConfig
@@ -42,6 +44,7 @@
 import android.net.NetworkProvider
 import android.net.NetworkScore
 import android.net.PacProxyManager
+import android.net.connectivity.ConnectivityCompatChanges.ENABLE_MATCH_LOCAL_NETWORK
 import android.net.networkstack.NetworkStackClientBase
 import android.os.BatteryStatsManager
 import android.os.Bundle
@@ -51,9 +54,9 @@
 import android.os.UserHandle
 import android.os.UserManager
 import android.permission.PermissionManager.PermissionResult
+import android.telephony.SubscriptionManager
 import android.telephony.TelephonyManager
 import android.testing.TestableContext
-import android.util.ArraySet
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.internal.app.IBatteryStats
 import com.android.internal.util.test.BroadcastInterceptingContext
@@ -75,14 +78,19 @@
 import java.util.concurrent.Executors
 import java.util.concurrent.LinkedBlockingQueue
 import java.util.concurrent.TimeUnit
-import java.util.function.Consumer
 import java.util.function.BiConsumer
+import java.util.function.Consumer
+import kotlin.annotation.AnnotationRetention.RUNTIME
+import kotlin.annotation.AnnotationTarget.FUNCTION
 import kotlin.test.assertNotNull
 import kotlin.test.assertNull
 import kotlin.test.fail
 import org.junit.After
 import org.junit.Before
+import org.junit.Rule
+import org.junit.rules.TestName
 import org.mockito.AdditionalAnswers.delegatesTo
+import org.mockito.ArgumentMatchers.anyInt
 import org.mockito.Mockito.doAnswer
 import org.mockito.Mockito.doReturn
 import org.mockito.Mockito.mock
@@ -103,6 +111,8 @@
 internal const val VERSION_V = 5
 internal const val VERSION_MAX = VERSION_V
 
+internal const val CALLING_UID_UNMOCKED = Process.INVALID_UID
+
 private fun NetworkCapabilities.getLegacyType() =
         when (transportTypes.getOrElse(0) { TRANSPORT_WIFI }) {
             TRANSPORT_BLUETOOTH -> ConnectivityManager.TYPE_BLUETOOTH
@@ -122,14 +132,19 @@
 // TODO (b/272685721) : make ConnectivityServiceTest smaller and faster by moving the setup
 // parts into this class and moving the individual tests to multiple separate classes.
 open class CSTest {
+    @get:Rule
+    val testNameRule = TestName()
+
     companion object {
         val CSTestExecutor = Executors.newSingleThreadExecutor()
     }
 
     init {
         if (!SdkLevel.isAtLeastS()) {
-            throw UnsupportedApiLevelException("CSTest subclasses must be annotated to only " +
-                    "run on S+, e.g. @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)")
+            throw UnsupportedApiLevelException(
+                "CSTest subclasses must be annotated to only " +
+                    "run on S+, e.g. @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)"
+            )
         }
     }
 
@@ -144,13 +159,14 @@
         it[ConnectivityFlags.NO_REMATCH_ALL_REQUESTS_ON_REGISTER] = true
         it[ConnectivityFlags.REQUEST_RESTRICTED_WIFI] = true
         it[ConnectivityService.KEY_DESTROY_FROZEN_SOCKETS_VERSION] = true
-        it[ConnectivityService.DELAY_DESTROY_FROZEN_SOCKETS_VERSION] = true
         it[ConnectivityService.ALLOW_SYSUI_CONNECTIVITY_REPORTS] = true
-        it[ConnectivityService.LOG_BPF_RC] = true
         it[ConnectivityService.ALLOW_SATALLITE_NETWORK_FALLBACK] = true
+        it[ConnectivityFlags.INGRESS_TO_VPN_ADDRESS_FILTERING] = true
+        it[ConnectivityFlags.BACKGROUND_FIREWALL_CHAIN] = true
+        it[ConnectivityFlags.DELAY_DESTROY_SOCKETS] = true
+        it[ConnectivityFlags.USE_DECLARED_METHODS_FOR_CALLBACKS] = true
     }
-    fun enableFeature(f: String) = enabledFeatures.set(f, true)
-    fun disableFeature(f: String) = enabledFeatures.set(f, false)
+    fun setFeatureEnabled(flag: String, enabled: Boolean) = enabledFeatures.set(flag, enabled)
 
     // When adding new members, consider if it's not better to build the object in CSTestHelpers
     // to keep this file clean of implementation details. Generally, CSTestHelpers should only
@@ -158,7 +174,11 @@
     val contentResolver = makeMockContentResolver(context)
 
     val PRIMARY_USER = 0
-    val PRIMARY_USER_INFO = UserInfo(PRIMARY_USER, "" /* name */, UserInfo.FLAG_PRIMARY)
+    val PRIMARY_USER_INFO = UserInfo(
+            PRIMARY_USER,
+            "", // name
+            UserInfo.FLAG_PRIMARY
+    )
     val PRIMARY_USER_HANDLE = UserHandle(PRIMARY_USER)
     val userManager = makeMockUserManager(PRIMARY_USER_INFO, PRIMARY_USER_HANDLE)
     val activityManager = makeActivityManager()
@@ -170,19 +190,28 @@
     val connResources = makeMockConnResources(sysResources, packageManager)
 
     val netd = mock<INetd>()
-    val bpfNetMaps = mock<BpfNetMaps>()
+    val bpfNetMaps = mock<BpfNetMaps>().also {
+        doReturn(PERMISSION_INTERNET).`when`(it).getNetPermForUid(anyInt())
+    }
     val clatCoordinator = mock<ClatCoordinator>()
     val networkRequestStateStatsMetrics = mock<NetworkRequestStateStatsMetrics>()
-    val proxyTracker = ProxyTracker(context, mock<Handler>(), 16 /* EVENT_PROXY_HAS_CHANGED */)
+    val proxyTracker = ProxyTracker(
+            context,
+            mock<Handler>(),
+            16 // EVENT_PROXY_HAS_CHANGED
+    )
     val systemConfigManager = makeMockSystemConfigManager()
     val batteryStats = mock<IBatteryStats>()
     val batteryManager = BatteryStatsManager(batteryStats)
+    val appOpsManager = mock<AppOpsManager>()
     val telephonyManager = mock<TelephonyManager>().also {
         doReturn(true).`when`(it).isDataCapable()
     }
+    val subscriptionManager = mock<SubscriptionManager>()
 
     val multicastRoutingCoordinatorService = mock<MulticastRoutingCoordinatorService>()
     val satelliteAccessController = mock<SatelliteAccessController>()
+    val destroySocketsWrapper = mock<DestroySocketsWrapper>()
 
     val deps = CSDeps()
 
@@ -193,8 +222,32 @@
     lateinit var cm: ConnectivityManager
     lateinit var csHandler: Handler
 
+    // Tests can use this annotation to set flag values before constructing ConnectivityService
+    // e.g. @FeatureFlags([Flag(flagName1, true/false), Flag(flagName2, true/false)])
+    @Retention(RUNTIME)
+    @Target(FUNCTION)
+    annotation class FeatureFlags(val flags: Array<Flag>)
+
+    @Retention(RUNTIME)
+    @Target(FUNCTION)
+    annotation class Flag(val name: String, val enabled: Boolean)
+
     @Before
     fun setUp() {
+        // Set feature flags before constructing ConnectivityService
+        val testMethodName = testNameRule.methodName
+        try {
+            val testMethod = this::class.java.getMethod(testMethodName)
+            val featureFlags = testMethod.getAnnotation(FeatureFlags::class.java)
+            if (featureFlags != null) {
+                for (flag in featureFlags.flags) {
+                    setFeatureEnabled(flag.name, flag.enabled)
+                }
+            }
+        } catch (ignored: NoSuchMethodException) {
+            // This is expected for parameterized tests
+        }
+
         alarmHandlerThread = HandlerThread("TestAlarmManager").also { it.start() }
         alarmManager = makeMockAlarmManager(alarmHandlerThread)
         service = makeConnectivityService(context, netd, deps).also { it.systemReadyInternal() }
@@ -212,6 +265,11 @@
         alarmHandlerThread.join()
     }
 
+    // Class to be mocked and used to verify destroy sockets methods call
+    open inner class DestroySocketsWrapper {
+        open fun destroyLiveTcpSocketsByOwnerUids(ownerUids: Set<Int>) {}
+    }
+
     inner class CSDeps : ConnectivityService.Dependencies() {
         override fun getResources(ctx: Context) = connResources
         override fun getBpfNetMaps(context: Context, netd: INetd) = this@CSTest.bpfNetMaps
@@ -227,7 +285,8 @@
                 context: Context,
                 tm: TelephonyManager,
                 requestRestrictedWifiEnabled: Boolean,
-                listener: BiConsumer<Int, Int>
+                listener: BiConsumer<Int, Int>,
+                handler: Handler
         ) = if (SdkLevel.isAtLeastT()) mock<CarrierPrivilegeAuthenticator>() else null
 
         var satelliteNetworkFallbackUidUpdate: Consumer<Set<Int>>? = null
@@ -249,8 +308,12 @@
                 AutomaticOnOffKeepaliveTracker(c, h, AOOKTDeps(c))
 
         override fun makeMultinetworkPolicyTracker(c: Context, h: Handler, r: Runnable) =
-                MultinetworkPolicyTracker(c, h, r,
-                        MultinetworkPolicyTrackerTestDependencies(connResources.get()))
+                MultinetworkPolicyTracker(
+                        c,
+                        h,
+                        r,
+                        MultinetworkPolicyTrackerTestDependencies(connResources.get())
+                )
 
         override fun makeNetworkRequestStateStatsMetrics(c: Context) =
                 this@CSTest.networkRequestStateStatsMetrics
@@ -264,7 +327,7 @@
                 enabledFeatures[name] ?: fail("Unmocked feature $name, see CSTest.enabledFeatures")
 
         // Mocked change IDs
-        private val enabledChangeIds = ArraySet<Long>()
+        private val enabledChangeIds = arrayListOf(ENABLE_MATCH_LOCAL_NETWORK)
         fun setChangeIdEnabled(enabled: Boolean, changeId: Long) {
             // enabledChangeIds is read on the handler thread and maybe the test thread, so
             // make sure both threads see it before continuing.
@@ -299,6 +362,24 @@
         override fun isAtLeastT() = if (isSdkUnmocked) super.isAtLeastT() else sdkLevel >= VERSION_T
         override fun isAtLeastU() = if (isSdkUnmocked) super.isAtLeastU() else sdkLevel >= VERSION_U
         override fun isAtLeastV() = if (isSdkUnmocked) super.isAtLeastV() else sdkLevel >= VERSION_V
+
+        private var callingUid = CALLING_UID_UNMOCKED
+
+        fun unmockCallingUid() {
+            setCallingUid(CALLING_UID_UNMOCKED)
+        }
+
+        fun setCallingUid(callingUid: Int) {
+            visibleOnHandlerThread(csHandler) { this.callingUid = callingUid }
+        }
+
+        override fun getCallingUid() =
+                if (callingUid == CALLING_UID_UNMOCKED) super.getCallingUid() else callingUid
+
+        override fun destroyLiveTcpSocketsByOwnerUids(ownerUids: Set<Int>) {
+            // Call mocked destroyLiveTcpSocketsByOwnerUids so that test can verify this method call
+            destroySocketsWrapper.destroyLiveTcpSocketsByOwnerUids(ownerUids)
+        }
     }
 
     inner class CSContext(base: Context) : BroadcastInterceptingContext(base) {
@@ -322,8 +403,12 @@
         override fun enforceCallingOrSelfPermission(permission: String, message: String?) {
             // If the permission result does not set in the mMockedPermissions, it will be
             // considered as PERMISSION_GRANTED as existing design to prevent breaking other tests.
-            val granted = checkMockedPermission(permission, Process.myPid(), Process.myUid(),
-                PERMISSION_GRANTED)
+            val granted = checkMockedPermission(
+                permission,
+                Process.myPid(),
+                Process.myUid(),
+                PERMISSION_GRANTED
+            )
             if (!granted.equals(PERMISSION_GRANTED)) {
                 throw SecurityException("[Test] permission denied: " + permission)
             }
@@ -334,8 +419,12 @@
         override fun checkCallingOrSelfPermission(permission: String) =
             checkMockedPermission(permission, Process.myPid(), Process.myUid(), PERMISSION_GRANTED)
 
-        private fun checkMockedPermission(permission: String, pid: Int, uid: Int, default: Int):
-                Int {
+        private fun checkMockedPermission(
+                permission: String,
+                pid: Int,
+                uid: Int,
+                default: Int
+        ): Int {
             val processSpecificKey = "$permission,$pid,$uid"
             return mMockedPermissions[processSpecificKey]
                     ?: mMockedPermissions[permission] ?: default
@@ -397,16 +486,17 @@
             Context.ACTIVITY_SERVICE -> activityManager
             Context.SYSTEM_CONFIG_SERVICE -> systemConfigManager
             Context.TELEPHONY_SERVICE -> telephonyManager
+            Context.TELEPHONY_SUBSCRIPTION_SERVICE -> subscriptionManager
             Context.BATTERY_STATS_SERVICE -> batteryManager
             Context.STATS_MANAGER -> null // Stats manager is final and can't be mocked
+            Context.APP_OPS_SERVICE -> appOpsManager
             else -> super.getSystemService(serviceName)
         }
 
         internal val orderedBroadcastAsUserHistory = ArrayTrackRecord<Intent>().newReadHead()
 
         fun expectNoDataActivityBroadcast(timeoutMs: Int) {
-            assertNull(orderedBroadcastAsUserHistory.poll(
-                    timeoutMs.toLong()) { intent -> true })
+            assertNull(orderedBroadcastAsUserHistory.poll(timeoutMs.toLong()))
         }
 
         override fun sendOrderedBroadcastAsUser(
diff --git a/tests/unit/java/com/android/server/ethernet/EthernetInterfaceStateMachineTest.kt b/tests/unit/java/com/android/server/ethernet/EthernetInterfaceStateMachineTest.kt
new file mode 100644
index 0000000..c8b2f65
--- /dev/null
+++ b/tests/unit/java/com/android/server/ethernet/EthernetInterfaceStateMachineTest.kt
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// ktlint does not allow annotating function argument literals inline. Disable the specific rule
+// since this negatively affects readability.
+@file:Suppress("ktlint:standard:comment-wrapping")
+
+package com.android.server.ethernet
+
+import android.content.Context
+import android.net.NetworkCapabilities
+import android.net.NetworkProvider
+import android.net.NetworkProvider.NetworkOfferCallback
+import android.os.Build
+import android.os.Handler
+import android.os.test.TestLooper
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentCaptor
+import org.mockito.ArgumentMatchers.any
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mock
+import org.mockito.Mockito.inOrder
+import org.mockito.Mockito.verify
+import org.mockito.MockitoAnnotations
+
+private const val IFACE = "eth0"
+private val CAPS = NetworkCapabilities.Builder().build()
+
+@SmallTest
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class EthernetInterfaceStateMachineTest {
+    private lateinit var looper: TestLooper
+    private lateinit var handler: Handler
+    private lateinit var ifaceState: EthernetInterfaceStateMachine
+
+    @Mock private lateinit var context: Context
+    @Mock private lateinit var provider: NetworkProvider
+    @Mock private lateinit var deps: EthernetNetworkFactory.Dependencies
+
+    // There seems to be no (obvious) way to force execution of @Before and @Test annotation on the
+    // same thread. Since SyncStateMachine requires all interactions to be called from the same
+    // thread that is provided at construction time (in this case, the thread that TestLooper() is
+    // called on), setUp() must be called directly from the @Test method.
+    // TODO: find a way to fix this in the test runner.
+    fun setUp() {
+        looper = TestLooper()
+        handler = Handler(looper.looper)
+        MockitoAnnotations.initMocks(this)
+
+        ifaceState = EthernetInterfaceStateMachine(IFACE, handler, context, CAPS, provider, deps)
+    }
+
+    @Test
+    fun testUpdateLinkState_networkOfferRegisteredAndRetracted() {
+        setUp()
+
+        ifaceState.updateLinkState(/* up= */ true)
+
+        // link comes up: validate the NetworkOffer is registered and capture callback object.
+        val inOrder = inOrder(provider)
+        val networkOfferCb = ArgumentCaptor.forClass(NetworkOfferCallback::class.java).also {
+            inOrder.verify(provider).registerNetworkOffer(any(), any(), any(), it.capture())
+        }.value
+
+        ifaceState.updateLinkState(/* up */ false)
+
+        // link goes down: validate the NetworkOffer is retracted
+        inOrder.verify(provider).unregisterNetworkOffer(eq(networkOfferCb))
+    }
+}
diff --git a/tests/unit/java/com/android/server/ethernet/EthernetNetworkFactoryTest.java b/tests/unit/java/com/android/server/ethernet/EthernetNetworkFactoryTest.java
index 949e0c2..70d4ad8 100644
--- a/tests/unit/java/com/android/server/ethernet/EthernetNetworkFactoryTest.java
+++ b/tests/unit/java/com/android/server/ethernet/EthernetNetworkFactoryTest.java
@@ -554,4 +554,22 @@
         mNetworkOfferCallback.onNetworkNeeded(createDefaultRequest());
         verify(mIpClient, never()).startProvisioning(any());
     }
+
+    @Test
+    public void testGetMacAddressProvisionedInterface() throws Exception {
+        initEthernetNetworkFactory();
+        createAndVerifyProvisionedInterface(TEST_IFACE);
+
+        final String result = mNetFactory.getHwAddress(TEST_IFACE);
+        assertEquals(HW_ADDR, result);
+    }
+
+    @Test
+    public void testGetMacAddressForNonExistingInterface() {
+        initEthernetNetworkFactory();
+
+        final String result = mNetFactory.getHwAddress(TEST_IFACE);
+        // No interface exists due to not calling createAndVerifyProvisionedInterface(...).
+        assertNull(result);
+    }
 }
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index 2be74db..7e0a225 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -56,6 +56,7 @@
 import static android.net.TrafficStats.MB_IN_BYTES;
 import static android.net.TrafficStats.UID_REMOVED;
 import static android.net.TrafficStats.UID_TETHERING;
+import static android.net.connectivity.ConnectivityCompatChanges.ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_UID_TAG;
 import static android.net.netstats.NetworkStatsDataMigrationUtils.PREFIX_XT;
@@ -68,11 +69,14 @@
 import static com.android.server.net.NetworkStatsEventLogger.POLL_REASON_RAT_CHANGED;
 import static com.android.server.net.NetworkStatsEventLogger.PollEvent.pollReasonNameOf;
 import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_POLL;
+import static com.android.server.net.NetworkStatsService.DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS;
+import static com.android.server.net.NetworkStatsService.DEFAULT_TRAFFIC_STATS_CACHE_MAX_ENTRIES;
 import static com.android.server.net.NetworkStatsService.NETSTATS_FASTDATAINPUT_FALLBACKS_COUNTER_NAME;
 import static com.android.server.net.NetworkStatsService.NETSTATS_FASTDATAINPUT_SUCCESSES_COUNTER_NAME;
 import static com.android.server.net.NetworkStatsService.NETSTATS_IMPORT_ATTEMPTS_COUNTER_NAME;
 import static com.android.server.net.NetworkStatsService.NETSTATS_IMPORT_FALLBACKS_COUNTER_NAME;
 import static com.android.server.net.NetworkStatsService.NETSTATS_IMPORT_SUCCESSES_COUNTER_NAME;
+import static com.android.server.net.NetworkStatsService.TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG;
 import static com.android.testutils.DevSdkIgnoreRuleKt.SC_V2;
 
 import static org.junit.Assert.assertEquals;
@@ -118,6 +122,7 @@
 import android.net.TestNetworkSpecifier;
 import android.net.TetherStatsParcel;
 import android.net.TetheringManager;
+import android.net.TrafficStats;
 import android.net.UnderlyingNetworkInfo;
 import android.net.netstats.provider.INetworkStatsProviderCallback;
 import android.net.wifi.WifiInfo;
@@ -163,12 +168,15 @@
 import com.android.testutils.HandlerUtils;
 import com.android.testutils.TestBpfMap;
 import com.android.testutils.TestableNetworkStatsProviderBinder;
+import com.android.testutils.com.android.testutils.SetFeatureFlagsRule;
+import com.android.testutils.com.android.testutils.SetFeatureFlagsRule.FeatureFlag;
 
 import libcore.testing.io.TestIoUtils;
 
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Ignore;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
@@ -193,6 +201,7 @@
 import java.util.Set;
 import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.function.Function;
 
 /**
  * Tests for {@link NetworkStatsService}.
@@ -206,6 +215,7 @@
 // NetworkStatsService is not updatable before T, so tests do not need to be backwards compatible
 @DevSdkIgnoreRule.IgnoreUpTo(SC_V2)
 public class NetworkStatsServiceTest extends NetworkStatsBaseTest {
+
     private static final String TAG = "NetworkStatsServiceTest";
 
     private static final long TEST_START = 1194220800000L;
@@ -300,6 +310,17 @@
     private Boolean mIsDebuggable;
     private HandlerThread mObserverHandlerThread;
     final TestDependencies mDeps = new TestDependencies();
+    final HashMap<String, Boolean> mFeatureFlags = new HashMap<>();
+    final HashMap<Long, Boolean> mCompatChanges = new HashMap<>();
+
+    // This will set feature flags from @FeatureFlag annotations
+    // into the map before setUp() runs.
+    @Rule
+    public final SetFeatureFlagsRule mSetFeatureFlagsRule =
+            new SetFeatureFlagsRule((name, enabled) -> {
+                mFeatureFlags.put(name, enabled);
+                return null;
+            }, (name) -> mFeatureFlags.getOrDefault(name, false));
 
     private class MockContext extends BroadcastInterceptingContext {
         private final Context mBaseContext;
@@ -410,8 +431,6 @@
 
         mElapsedRealtime = 0L;
 
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
         mService.systemReady();
         // Verify that system ready fetches realtime stats
@@ -450,6 +469,7 @@
 
     class TestDependencies extends NetworkStatsService.Dependencies {
         private int mCompareStatsInvocation = 0;
+        private NetworkStats.Entry mMockedTrafficStatsNativeStat = null;
 
         @Override
         public File getLegacyStatsDir() {
@@ -591,6 +611,51 @@
         public boolean supportEventLogger(@NonNull Context cts) {
             return true;
         }
+
+        @Override
+        public boolean alwaysUseTrafficStatsRateLimitCache(Context ctx) {
+            return mFeatureFlags.getOrDefault(TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG, false);
+        }
+
+        @Override
+        public int getTrafficStatsRateLimitCacheExpiryDuration() {
+            return DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS;
+        }
+
+        @Override
+        public int getTrafficStatsRateLimitCacheMaxEntries() {
+            return DEFAULT_TRAFFIC_STATS_CACHE_MAX_ENTRIES;
+        }
+
+        @Override
+        public boolean isChangeEnabled(long changeId, int uid) {
+            return mCompatChanges.getOrDefault(changeId, true);
+        }
+
+        public void setChangeEnabled(long changeId, boolean enabled) {
+            mCompatChanges.put(changeId, enabled);
+        }
+        @Nullable
+        @Override
+        public NetworkStats.Entry nativeGetTotalStat() {
+            return mMockedTrafficStatsNativeStat;
+        }
+
+        @Nullable
+        @Override
+        public NetworkStats.Entry nativeGetIfaceStat(String iface) {
+            return mMockedTrafficStatsNativeStat;
+        }
+
+        @Nullable
+        @Override
+        public NetworkStats.Entry nativeGetUidStat(int uid) {
+            return mMockedTrafficStatsNativeStat;
+        }
+
+        public void setNativeStat(NetworkStats.Entry entry) {
+            mMockedTrafficStatsNativeStat = entry;
+        }
     }
 
     @After
@@ -747,8 +812,6 @@
         assertStatsFilesExist(true);
 
         // boot through serviceReady() again
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
 
         mService.systemReady();
@@ -947,7 +1010,16 @@
     }
 
     @Test
-    public void testMobileStatsByRatType() throws Exception {
+    public void testMobileStatsByRatTypeForSatellite() throws Exception {
+        doTestMobileStatsByRatType(new NetworkStateSnapshot[]{buildSatelliteMobileState(IMSI_1)});
+    }
+
+    @Test
+    public void testMobileStatsByRatTypeForCellular() throws Exception {
+        doTestMobileStatsByRatType(new NetworkStateSnapshot[]{buildMobileState(IMSI_1)});
+    }
+
+    private void doTestMobileStatsByRatType(NetworkStateSnapshot[] states) throws Exception {
         final NetworkTemplate template3g = new NetworkTemplate.Builder(MATCH_MOBILE)
                 .setRatType(TelephonyManager.NETWORK_TYPE_UMTS)
                 .setMeteredness(METERED_YES).build();
@@ -957,8 +1029,6 @@
         final NetworkTemplate template5g = new NetworkTemplate.Builder(MATCH_MOBILE)
                 .setRatType(TelephonyManager.NETWORK_TYPE_NR)
                 .setMeteredness(METERED_YES).build();
-        final NetworkStateSnapshot[] states =
-                new NetworkStateSnapshot[]{buildMobileState(IMSI_1)};
 
         // 3G network comes online.
         mockNetworkStatsSummary(buildEmptyStats());
@@ -972,7 +1042,7 @@
         incrementCurrentTime(MINUTE_IN_MILLIS);
         mockNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
                 .addEntry(new NetworkStats.Entry(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE,
-                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 12L, 18L, 14L, 1L, 0L)));
+                         METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 12L, 18L, 14L, 1L, 0L)));
         forcePollAndWaitForIdle();
 
         // Verify 3g templates gets stats.
@@ -987,7 +1057,7 @@
         mockNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 1)
                 // Append more traffic on existing 3g stats entry.
                 .addEntry(new NetworkStats.Entry(TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE,
-                         METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 16L, 22L, 17L, 2L, 0L))
+                        METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 16L, 22L, 17L, 2L, 0L))
                 // Add entry that is new on 4g.
                 .addEntry(new NetworkStats.Entry(TEST_IFACE, UID_RED, SET_FOREGROUND, TAG_NONE,
                         METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO, 33L, 27L, 8L, 10L, 1L)));
@@ -1389,6 +1459,57 @@
     }
 
     @Test
+    public void testGetUidStatsForTransportWithCellularAndSatellite() throws Exception {
+        // Setup satellite mobile network and Cellular mobile network
+        mockDefaultSettings();
+        mockNetworkStatsUidDetail(buildEmptyStats());
+
+        final NetworkStateSnapshot mobileState = buildStateOfTransport(
+                NetworkCapabilities.TRANSPORT_CELLULAR, TYPE_MOBILE,
+                TEST_IFACE2, IMSI_1, null /* wifiNetworkKey */,
+                false /* isTemporarilyNotMetered */, false /* isRoaming */);
+
+        final NetworkStateSnapshot[] states = new NetworkStateSnapshot[]{mobileState,
+                buildSatelliteMobileState(IMSI_1)};
+        mService.notifyNetworkStatus(NETWORKS_MOBILE, states, getActiveIface(states),
+                new UnderlyingNetworkInfo[0]);
+        setMobileRatTypeAndWaitForIdle(TelephonyManager.NETWORK_TYPE_LTE);
+
+        // mock traffic on satellite network
+        final NetworkStats.Entry entrySatellite = new NetworkStats.Entry(
+                TEST_IFACE, UID_RED, SET_DEFAULT, TAG_NONE, METERED_NO, ROAMING_NO,
+                DEFAULT_NETWORK_NO, 80L, 5L, 70L, 15L, 1L);
+
+        // mock traffic on cellular network
+        final NetworkStats.Entry entryCellular = new NetworkStats.Entry(
+                TEST_IFACE2, UID_RED, SET_DEFAULT, TAG_NONE, METERED_NO, ROAMING_NO,
+                DEFAULT_NETWORK_NO, 100L, 15L, 150L, 15L, 1L);
+
+        final TetherStatsParcel[] emptyTetherStats = {};
+        // The interfaces that expect to be used to query the stats.
+        final String[] mobileIfaces = {TEST_IFACE, TEST_IFACE2};
+        incrementCurrentTime(HOUR_IN_MILLIS);
+        mockDefaultSettings();
+        mockNetworkStatsUidDetail(new NetworkStats(getElapsedRealtime(), 2)
+                .insertEntry(entrySatellite).insertEntry(entryCellular), emptyTetherStats,
+                mobileIfaces);
+        // with getUidStatsForTransport(TRANSPORT_CELLULAR) return stats of both cellular
+        // and satellite
+        final NetworkStats mobileStats = mService.getUidStatsForTransport(
+                NetworkCapabilities.TRANSPORT_CELLULAR);
+
+        // The iface field of the returned stats should be null because getUidStatsForTransport
+        // clears the interface field before it returns the result.
+        assertValues(mobileStats, null /* iface */, UID_RED, SET_DEFAULT, TAG_NONE,
+                METERED_NO, ROAMING_NO, METERED_NO, 180L, 20L, 220L, 30L, 2L);
+
+        // getUidStatsForTransport(TRANSPORT_SATELLITE) is not supported
+        assertThrows(IllegalArgumentException.class,
+                () -> mService.getUidStatsForTransport(NetworkCapabilities.TRANSPORT_SATELLITE));
+
+    }
+
+    @Test
     public void testForegroundBackground() throws Exception {
         // pretend that network comes online
         mockDefaultSettings();
@@ -2071,8 +2192,6 @@
                 getLegacyCollection(PREFIX_UID_TAG, true /* includeTags */));
 
         // Mock zero usage and boot through serviceReady(), verify there is no imported data.
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
         mService.systemReady();
         assertStatsFilesExist(false);
@@ -2084,8 +2203,6 @@
         assertStatsFilesExist(false);
 
         // Boot through systemReady() again.
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
         mService.systemReady();
 
@@ -2159,8 +2276,6 @@
                 getLegacyCollection(PREFIX_UID_TAG, true /* includeTags */));
 
         // Mock zero usage and boot through serviceReady(), verify there is no imported data.
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
         mService.systemReady();
         assertStatsFilesExist(false);
@@ -2172,8 +2287,6 @@
         assertStatsFilesExist(false);
 
         // Boot through systemReady() again.
-        mockDefaultSettings();
-        mockNetworkStatsUidDetail(buildEmptyStats());
         prepareForSystemReady();
         mService.systemReady();
 
@@ -2325,6 +2438,84 @@
         assertUidTotal(sTemplateWifi, UID_GREEN, 64L, 3L, 1024L, 8L, 0);
     }
 
+    @FeatureFlag(name = TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG, enabled = false)
+    @Test
+    public void testTrafficStatsRateLimitCache_disabledWithCompatChangeEnabled() throws Exception {
+        mDeps.setChangeEnabled(ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, true);
+        doTestTrafficStatsRateLimitCache(true /* expectCached */);
+    }
+
+    @FeatureFlag(name = TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG)
+    @Test
+    public void testTrafficStatsRateLimitCache_enabledWithCompatChangeEnabled() throws Exception {
+        mDeps.setChangeEnabled(ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, true);
+        doTestTrafficStatsRateLimitCache(true /* expectCached */);
+    }
+
+    @FeatureFlag(name = TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG, enabled = false)
+    @Test
+    public void testTrafficStatsRateLimitCache_disabledWithCompatChangeDisabled() throws Exception {
+        mDeps.setChangeEnabled(ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, false);
+        doTestTrafficStatsRateLimitCache(false /* expectCached */);
+    }
+
+    @FeatureFlag(name = TRAFFICSTATS_RATE_LIMIT_CACHE_ENABLED_FLAG)
+    @Test
+    public void testTrafficStatsRateLimitCache_enabledWithCompatChangeDisabled() throws Exception {
+        mDeps.setChangeEnabled(ENABLE_TRAFFICSTATS_RATE_LIMIT_CACHE, false);
+        doTestTrafficStatsRateLimitCache(true /* expectCached */);
+    }
+
+    private void doTestTrafficStatsRateLimitCache(boolean expectCached) throws Exception {
+        mockDefaultSettings();
+        // Calling uid is not injected into the service, use the real uid to pass the caller check.
+        final int myUid = Process.myUid();
+        mockTrafficStatsValues(64L, 3L, 1024L, 8L);
+        assertTrafficStatsValues(TEST_IFACE, myUid, 64L, 3L, 1024L, 8L);
+
+        // Verify the values are cached.
+        incrementCurrentTime(DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS / 2);
+        mockTrafficStatsValues(65L, 8L, 1055L, 9L);
+        if (expectCached) {
+            assertTrafficStatsValues(TEST_IFACE, myUid, 64L, 3L, 1024L, 8L);
+        } else {
+            assertTrafficStatsValues(TEST_IFACE, myUid, 65L, 8L, 1055L, 9L);
+        }
+
+        // Verify the values are updated after cache expiry.
+        incrementCurrentTime(DEFAULT_TRAFFIC_STATS_CACHE_EXPIRY_DURATION_MS);
+        assertTrafficStatsValues(TEST_IFACE, myUid, 65L, 8L, 1055L, 9L);
+    }
+
+    private void mockTrafficStatsValues(long rxBytes, long rxPackets,
+            long txBytes, long txPackets) {
+        // In practice, keys and operations are not used and filled with default values when
+        // returned by JNI layer.
+        final NetworkStats.Entry entry = new NetworkStats.Entry(IFACE_ALL, UID_ALL, SET_DEFAULT,
+                TAG_NONE, METERED_NO, ROAMING_NO, DEFAULT_NETWORK_NO,
+                rxBytes, rxPackets, txBytes, txPackets, 0L);
+        mDeps.setNativeStat(entry);
+    }
+
+    // Assert for 3 different API return values respectively.
+    private void assertTrafficStatsValues(String iface, int uid, long rxBytes, long rxPackets,
+            long txBytes, long txPackets) {
+        assertTrafficStatsValuesThat(rxBytes, rxPackets, txBytes, txPackets,
+                (type) -> mService.getTotalStats(type));
+        assertTrafficStatsValuesThat(rxBytes, rxPackets, txBytes, txPackets,
+                (type) -> mService.getIfaceStats(iface, type));
+        assertTrafficStatsValuesThat(rxBytes, rxPackets, txBytes, txPackets,
+                (type) -> mService.getUidStats(uid, type));
+    }
+
+    private void assertTrafficStatsValuesThat(long rxBytes, long rxPackets, long txBytes,
+            long txPackets, Function<Integer, Long> fetcher) {
+        assertEquals(rxBytes, (long) fetcher.apply(TrafficStats.TYPE_RX_BYTES));
+        assertEquals(rxPackets, (long) fetcher.apply(TrafficStats.TYPE_RX_PACKETS));
+        assertEquals(txBytes, (long) fetcher.apply(TrafficStats.TYPE_TX_BYTES));
+        assertEquals(txPackets, (long) fetcher.apply(TrafficStats.TYPE_TX_PACKETS));
+    }
+
     private void assertShouldRunComparison(boolean expected, boolean isDebuggable) {
         assertEquals("shouldRunComparison (debuggable=" + isDebuggable + "): ",
                 expected, mService.shouldRunComparison());
@@ -2389,6 +2580,8 @@
     }
 
     private void prepareForSystemReady() throws Exception {
+        mockDefaultSettings();
+        mockNetworkStatsUidDetail(buildEmptyStats());
         mockNetworkStatsSummary(buildEmptyStats());
     }
 
@@ -2546,6 +2739,12 @@
                 false /* isTemporarilyNotMetered */, false /* isRoaming */);
     }
 
+    private static NetworkStateSnapshot buildSatelliteMobileState(String subscriberId) {
+        return buildStateOfTransport(NetworkCapabilities.TRANSPORT_SATELLITE, TYPE_MOBILE,
+                TEST_IFACE, subscriberId, null /* wifiNetworkKey */,
+                false /* isTemporarilyNotMetered */, false /* isRoaming */);
+    }
+
     private static NetworkStateSnapshot buildTestState(@NonNull String iface,
             @Nullable String wifiNetworkKey) {
         return buildStateOfTransport(NetworkCapabilities.TRANSPORT_TEST, TYPE_TEST,
diff --git a/tests/unit/java/com/android/server/net/TrafficStatsRateLimitCacheTest.kt b/tests/unit/java/com/android/server/net/TrafficStatsRateLimitCacheTest.kt
index 27e6f96..99f762d 100644
--- a/tests/unit/java/com/android/server/net/TrafficStatsRateLimitCacheTest.kt
+++ b/tests/unit/java/com/android/server/net/TrafficStatsRateLimitCacheTest.kt
@@ -16,30 +16,35 @@
 
 package com.android.server.net
 
-import android.net.NetworkStats
+import android.net.NetworkStats.Entry
 import com.android.testutils.DevSdkIgnoreRunner
 import java.time.Clock
+import java.util.function.Supplier
 import kotlin.test.assertEquals
 import kotlin.test.assertNull
+import kotlin.test.fail
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.Mockito.doReturn
 import org.mockito.Mockito.mock
+import org.mockito.Mockito.verify
 import org.mockito.Mockito.`when`
 
 @RunWith(DevSdkIgnoreRunner::class)
 class TrafficStatsRateLimitCacheTest {
     companion object {
         private const val expiryDurationMs = 1000L
+        private const val maxSize = 2
     }
 
     private val clock = mock(Clock::class.java)
-    private val entry = mock(NetworkStats.Entry::class.java)
-    private val cache = TrafficStatsRateLimitCache(clock, expiryDurationMs)
+    private val entry = mock(Entry::class.java)
+    private val cache = TrafficStatsRateLimitCache(clock, expiryDurationMs, maxSize)
 
     @Test
     fun testGet_returnsEntryIfNotExpired() {
         cache.put("iface", 2, entry)
-        `when`(clock.millis()).thenReturn(500L) // Set clock to before expiry
+        doReturn(500L).`when`(clock).millis() // Set clock to before expiry
         val result = cache.get("iface", 2)
         assertEquals(entry, result)
     }
@@ -47,7 +52,7 @@
     @Test
     fun testGet_returnsNullIfExpired() {
         cache.put("iface", 2, entry)
-        `when`(clock.millis()).thenReturn(2000L) // Set clock to after expiry
+        doReturn(2000L).`when`(clock).millis() // Set clock to after expiry
         assertNull(cache.get("iface", 2))
     }
 
@@ -59,8 +64,8 @@
 
     @Test
     fun testPutAndGet_retrievesCorrectEntryForDifferentKeys() {
-        val entry1 = mock(NetworkStats.Entry::class.java)
-        val entry2 = mock(NetworkStats.Entry::class.java)
+        val entry1 = mock(Entry::class.java)
+        val entry2 = mock(Entry::class.java)
 
         cache.put("iface1", 2, entry1)
         cache.put("iface2", 4, entry2)
@@ -71,8 +76,8 @@
 
     @Test
     fun testPut_overridesExistingEntry() {
-        val entry1 = mock(NetworkStats.Entry::class.java)
-        val entry2 = mock(NetworkStats.Entry::class.java)
+        val entry1 = mock(Entry::class.java)
+        val entry2 = mock(Entry::class.java)
 
         cache.put("iface", 2, entry1)
         cache.put("iface", 2, entry2) // Put with the same key
@@ -81,6 +86,62 @@
     }
 
     @Test
+    fun testPut_removeLru() {
+        // Assumes max size is 2. Verify eldest entry get removed.
+        val entry1 = mock(Entry::class.java)
+        val entry2 = mock(Entry::class.java)
+        val entry3 = mock(Entry::class.java)
+
+        cache.put("iface1", 2, entry1)
+        cache.put("iface2", 4, entry2)
+        cache.put("iface3", 8, entry3)
+
+        assertNull(cache.get("iface1", 2))
+        assertEquals(entry2, cache.get("iface2", 4))
+        assertEquals(entry3, cache.get("iface3", 8))
+    }
+
+    @Test
+    fun testGetOrCompute_cacheHit() {
+        val entry1 = mock(Entry::class.java)
+
+        cache.put("iface1", 2, entry1)
+
+        // Set clock to before expiry.
+        doReturn(500L).`when`(clock).millis()
+
+        // Now call getOrCompute
+        val result = cache.getOrCompute("iface1", 2) {
+            fail("Supplier should not be called")
+        }
+
+        // Assertions
+        assertEquals(entry1, result) // Should get the cached entry.
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    @Test
+    fun testGetOrCompute_cacheMiss() {
+        val entry1 = mock(Entry::class.java)
+
+        cache.put("iface1", 2, entry1)
+
+        // Set clock to after expiry.
+        doReturn(1500L).`when`(clock).millis()
+
+        // Mock the supplier to return our network stats entry.
+        val supplier = mock(Supplier::class.java) as Supplier<Entry>
+        doReturn(entry1).`when`(supplier).get()
+
+        // Now call getOrCompute.
+        val result = cache.getOrCompute("iface1", 2, supplier)
+
+        // Assertions.
+        assertEquals(entry1, result) // Should get the cached entry.
+        verify(supplier).get()
+    }
+
+    @Test
     fun testClear() {
         cache.put("iface", 2, entry)
         cache.clear()
diff --git a/tests/unit/vpn-jarjar-rules.txt b/tests/unit/vpn-jarjar-rules.txt
deleted file mode 100644
index f74eab8..0000000
--- a/tests/unit/vpn-jarjar-rules.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-# Only keep classes imported by ConnectivityServiceTest
-keep com.android.server.connectivity.VpnProfileStore
diff --git a/thread/README.md b/thread/README.md
index f50e0cd..41b73ac 100644
--- a/thread/README.md
+++ b/thread/README.md
@@ -1,3 +1,18 @@
 # Thread
 
 Bring the [Thread](https://www.threadgroup.org/) networking protocol to Android.
+
+## Try Thread with Cuttlefish
+
+```
+# Get the code and go to the Android source code root directory
+
+source build/envsetup.sh
+lunch aosp_cf_x86_64_phone-trunk_staging-userdebug
+m
+
+launch_cvd
+```
+
+Open `https://localhost:8443/` in your web browser, you can find the Thread
+demoapp (with the Thread logo) in the cuttlefish instance. Open it and have fun with Thread!
diff --git a/thread/TEST_MAPPING b/thread/TEST_MAPPING
index ebbb9af..34d67bb 100644
--- a/thread/TEST_MAPPING
+++ b/thread/TEST_MAPPING
@@ -11,5 +11,8 @@
     }
   ],
   "postsubmit": [
+    {
+      "name": "ThreadNetworkMultiDeviceTests"
+    }
   ]
 }
diff --git a/thread/apex/ot-daemon.34rc b/thread/apex/ot-daemon.34rc
index 25060d1..86f6b69 100644
--- a/thread/apex/ot-daemon.34rc
+++ b/thread/apex/ot-daemon.34rc
@@ -21,5 +21,5 @@
     user thread_network
     group thread_network inet system
     seclabel u:r:ot_daemon:s0
-    socket ot-daemon/thread-wpan.sock stream 0666 thread_network thread_network
+    socket ot-daemon/thread-wpan.sock stream 0660 thread_network thread_network
     override
diff --git a/thread/demoapp/Android.bp b/thread/demoapp/Android.bp
index fcfd469..117b4f9 100644
--- a/thread/demoapp/Android.bp
+++ b/thread/demoapp/Android.bp
@@ -34,7 +34,19 @@
     libs: [
         "framework-connectivity-t",
     ],
+    required: [
+        "privapp-permissions-com.android.threadnetwork.demoapp",
+    ],
+    system_ext_specific: true,
     certificate: "platform",
     privileged: true,
     platform_apis: true,
 }
+
+prebuilt_etc {
+    name: "privapp-permissions-com.android.threadnetwork.demoapp",
+    src: "privapp-permissions-com.android.threadnetwork.demoapp.xml",
+    sub_dir: "permissions",
+    filename_from_src: true,
+    system_ext_specific: true,
+}
diff --git a/thread/demoapp/privapp-permissions-com.android.threadnetwork.demoapp.xml b/thread/demoapp/privapp-permissions-com.android.threadnetwork.demoapp.xml
new file mode 100644
index 0000000..1995e60
--- /dev/null
+++ b/thread/demoapp/privapp-permissions-com.android.threadnetwork.demoapp.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- The privileged permissions needed by the com.android.threadnetwork.demoapp app. -->
+<permissions>
+    <privapp-permissions package="com.android.threadnetwork.demoapp">
+        <permission name="android.permission.THREAD_NETWORK_PRIVILEGED" />
+    </privapp-permissions>
+</permissions>
diff --git a/thread/framework/Android.bp b/thread/framework/Android.bp
index 846253c..f8fe422 100644
--- a/thread/framework/Android.bp
+++ b/thread/framework/Android.bp
@@ -30,3 +30,14 @@
         "//packages/modules/Connectivity:__subpackages__",
     ],
 }
+
+filegroup {
+    name: "framework-thread-ot-daemon-shared-aidl-sources",
+    srcs: [
+        "java/android/net/thread/ChannelMaxPower.aidl",
+    ],
+    path: "java",
+    visibility: [
+        "//external/ot-br-posix:__subpackages__",
+    ],
+}
diff --git a/thread/framework/java/android/net/thread/ActiveOperationalDataset.java b/thread/framework/java/android/net/thread/ActiveOperationalDataset.java
index b74a15a..22457f5 100644
--- a/thread/framework/java/android/net/thread/ActiveOperationalDataset.java
+++ b/thread/framework/java/android/net/thread/ActiveOperationalDataset.java
@@ -18,7 +18,7 @@
 
 import static com.android.internal.util.Preconditions.checkArgument;
 import static com.android.internal.util.Preconditions.checkState;
-import static com.android.net.module.util.HexDump.dumpHexString;
+import static com.android.net.module.util.HexDump.toHexString;
 
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static java.util.Objects.requireNonNull;
@@ -74,42 +74,61 @@
 public final class ActiveOperationalDataset implements Parcelable {
     /** The maximum length of the Active Operational Dataset TLV array in bytes. */
     public static final int LENGTH_MAX_DATASET_TLVS = 254;
+
     /** The length of Extended PAN ID in bytes. */
     public static final int LENGTH_EXTENDED_PAN_ID = 8;
+
     /** The minimum length of Network Name as UTF-8 bytes. */
     public static final int LENGTH_MIN_NETWORK_NAME_BYTES = 1;
+
     /** The maximum length of Network Name as UTF-8 bytes. */
     public static final int LENGTH_MAX_NETWORK_NAME_BYTES = 16;
+
     /** The length of Network Key in bytes. */
     public static final int LENGTH_NETWORK_KEY = 16;
+
     /** The length of Mesh-Local Prefix in bits. */
     public static final int LENGTH_MESH_LOCAL_PREFIX_BITS = 64;
+
     /** The length of PSKc in bytes. */
     public static final int LENGTH_PSKC = 16;
+
     /** The 2.4 GHz channel page. */
     public static final int CHANNEL_PAGE_24_GHZ = 0;
+
     /** The minimum 2.4GHz channel. */
     public static final int CHANNEL_MIN_24_GHZ = 11;
+
     /** The maximum 2.4GHz channel. */
     public static final int CHANNEL_MAX_24_GHZ = 26;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_CHANNEL = 0;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_PAN_ID = 1;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_EXTENDED_PAN_ID = 2;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_NETWORK_NAME = 3;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_PSKC = 4;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_NETWORK_KEY = 5;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_MESH_LOCAL_PREFIX = 7;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_SECURITY_POLICY = 12;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_ACTIVE_TIMESTAMP = 14;
+
     /** @hide */
     @VisibleForTesting public static final int TYPE_CHANNEL_MASK = 53;
 
@@ -591,7 +610,7 @@
         sb.append("{networkName=")
                 .append(getNetworkName())
                 .append(", extendedPanId=")
-                .append(dumpHexString(getExtendedPanId()))
+                .append(toHexString(getExtendedPanId()))
                 .append(", panId=")
                 .append(getPanId())
                 .append(", channel=")
@@ -975,8 +994,10 @@
     public static final class SecurityPolicy {
         /** The default Rotation Time in hours. */
         public static final int DEFAULT_ROTATION_TIME_HOURS = 672;
+
         /** The minimum length of Security Policy flags in bytes. */
         public static final int LENGTH_MIN_SECURITY_POLICY_FLAGS = 1;
+
         /** The length of Rotation Time TLV value in bytes. */
         private static final int LENGTH_SECURITY_POLICY_ROTATION_TIME = 2;
 
@@ -1088,7 +1109,7 @@
             sb.append("{rotation=")
                     .append(mRotationTimeHours)
                     .append(", flags=")
-                    .append(dumpHexString(mFlags))
+                    .append(toHexString(mFlags))
                     .append("}");
             return sb.toString();
         }
diff --git a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java b/thread/framework/java/android/net/thread/ChannelMaxPower.aidl
similarity index 66%
copy from tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
copy to thread/framework/java/android/net/thread/ChannelMaxPower.aidl
index 472e347..bcda8a8 100644
--- a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
+++ b/thread/framework/java/android/net/thread/ChannelMaxPower.aidl
@@ -14,8 +14,15 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.arguments;
+package android.net.thread;
 
-public interface InstrumentationArguments {
-    String ARG_WAIVE_BIND_PRIORITY = "waive_bind_priority";
+ /**
+  * Mapping from a channel to its max power.
+  *
+  * {@hide}
+  */
+parcelable ChannelMaxPower {
+    int channel; // The Thread radio channel.
+    int maxPower; // The max power in the unit of 0.01dBm. Passing INT16_MAX(32767) will
+                  // disable the channel.
 }
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java b/thread/framework/java/android/net/thread/IConfigurationReceiver.aidl
similarity index 64%
copy from tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java
copy to thread/framework/java/android/net/thread/IConfigurationReceiver.aidl
index 6596269..dcc4545 100644
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/ExpeditedJobNonMeteredTest.java
+++ b/thread/framework/java/android/net/thread/IConfigurationReceiver.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Android Open Source Project
+ * Copyright 2024 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,10 +14,11 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.hostside;
+package android.net.thread;
 
-import static com.android.cts.net.hostside.Property.NON_METERED_NETWORK;
+import android.net.thread.ThreadConfiguration;
 
-@RequiredProperties({NON_METERED_NETWORK})
-public class ExpeditedJobNonMeteredTest extends AbstractExpeditedJobTest {
+/** Receives the result of a Thread Configuration change. @hide */
+oneway interface IConfigurationReceiver {
+    void onConfigurationChanged(in ThreadConfiguration configuration);
 }
diff --git a/thread/framework/java/android/net/thread/IThreadNetworkController.aidl b/thread/framework/java/android/net/thread/IThreadNetworkController.aidl
index 485e25d..f50de74 100644
--- a/thread/framework/java/android/net/thread/IThreadNetworkController.aidl
+++ b/thread/framework/java/android/net/thread/IThreadNetworkController.aidl
@@ -17,12 +17,15 @@
 package android.net.thread;
 
 import android.net.thread.ActiveOperationalDataset;
+import android.net.thread.ChannelMaxPower;
 import android.net.thread.IActiveOperationalDatasetReceiver;
-import android.net.thread.IOperationalDatasetCallback;
+import android.net.thread.IConfigurationReceiver;
 import android.net.thread.IOperationReceiver;
+import android.net.thread.IOperationalDatasetCallback;
 import android.net.thread.IScheduleMigrationReceiver;
 import android.net.thread.IStateCallback;
 import android.net.thread.PendingOperationalDataset;
+import android.net.thread.ThreadConfiguration;
 
 /**
 * Interface for communicating with ThreadNetworkControllerService.
@@ -39,9 +42,13 @@
     void leave(in IOperationReceiver receiver);
 
     void setTestNetworkAsUpstream(in String testNetworkInterfaceName, in IOperationReceiver receiver);
+    void setChannelMaxPowers(in ChannelMaxPower[] channelMaxPowers, in IOperationReceiver receiver);
 
     int getThreadVersion();
     void createRandomizedDataset(String networkName, IActiveOperationalDatasetReceiver receiver);
 
     void setEnabled(boolean enabled, in IOperationReceiver receiver);
+    void setConfiguration(in ThreadConfiguration config, in IOperationReceiver receiver);
+    void registerConfigurationCallback(in IConfigurationReceiver receiver);
+    void unregisterConfigurationCallback(in IConfigurationReceiver receiver);
 }
diff --git a/thread/framework/java/android/net/thread/OperationalDatasetTimestamp.java b/thread/framework/java/android/net/thread/OperationalDatasetTimestamp.java
index 520acbd..cecb4e9 100644
--- a/thread/framework/java/android/net/thread/OperationalDatasetTimestamp.java
+++ b/thread/framework/java/android/net/thread/OperationalDatasetTimestamp.java
@@ -65,11 +65,32 @@
      */
     @NonNull
     public static OperationalDatasetTimestamp fromInstant(@NonNull Instant instant) {
+        return OperationalDatasetTimestamp.fromInstant(instant, true /* isAuthoritativeSource */);
+    }
+
+    /**
+     * Creates a new {@link OperationalDatasetTimestamp} object from an {@link Instant}.
+     *
+     * <p>The {@code seconds} is set to {@code instant.getEpochSecond()}, {@code ticks} is set to
+     * {@link instant#getNano()} based on frequency of 32768 Hz, and {@code isAuthoritativeSource}
+     * is set to {@code isAuthoritativeSource}.
+     *
+     * <p>Note that this conversion can lose precision and a value returned by {@link #toInstant}
+     * may not equal exactly the {@code instant}.
+     *
+     * @throws IllegalArgumentException if {@code instant.getEpochSecond()} is larger than {@code
+     *     0xffffffffffffL}
+     * @see toInstant
+     * @hide
+     */
+    @NonNull
+    public static OperationalDatasetTimestamp fromInstant(
+            @NonNull Instant instant, boolean isAuthoritativeSource) {
         int ticks = getRoundedTicks(instant.getNano());
         long seconds = instant.getEpochSecond() + ticks / TICKS_UPPER_BOUND;
         // the rounded ticks can be 0x8000 if instant.getNano() >= 999984742
         ticks = ticks % TICKS_UPPER_BOUND;
-        return new OperationalDatasetTimestamp(seconds, ticks, true /* isAuthoritativeSource */);
+        return new OperationalDatasetTimestamp(seconds, ticks, isAuthoritativeSource);
     }
 
     /**
diff --git a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java b/thread/framework/java/android/net/thread/ThreadConfiguration.aidl
similarity index 73%
copy from tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
copy to thread/framework/java/android/net/thread/ThreadConfiguration.aidl
index 472e347..9473411 100644
--- a/tests/cts/hostside/instrumentation_arguments/src/com/android/cts/net/arguments/InstrumentationArguments.java
+++ b/thread/framework/java/android/net/thread/ThreadConfiguration.aidl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2024 The Android Open Source Project
+ * Copyright 2024 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-package com.android.cts.net.arguments;
+package android.net.thread;
 
-public interface InstrumentationArguments {
-    String ARG_WAIVE_BIND_PRIORITY = "waive_bind_priority";
-}
+parcelable ThreadConfiguration;
diff --git a/thread/framework/java/android/net/thread/ThreadConfiguration.java b/thread/framework/java/android/net/thread/ThreadConfiguration.java
new file mode 100644
index 0000000..e09b3a6
--- /dev/null
+++ b/thread/framework/java/android/net/thread/ThreadConfiguration.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net.thread;
+
+import android.annotation.NonNull;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.Objects;
+
+/**
+ * Data interface for Thread device configuration.
+ *
+ * <p>An example usage of creating a {@link ThreadConfiguration} that turns on NAT64 feature based
+ * on an existing {@link ThreadConfiguration}:
+ *
+ * <pre>{@code
+ * ThreadConfiguration config =
+ *     new ThreadConfiguration.Builder(existingConfig).setNat64Enabled(true).build();
+ * }</pre>
+ *
+ * @see ThreadNetworkController#setConfiguration
+ * @see ThreadNetworkController#registerConfigurationCallback
+ * @see ThreadNetworkController#unregisterConfigurationCallback
+ * @hide
+ */
+// @FlaggedApi(ThreadNetworkFlags.FLAG_CONFIGURATION_ENABLED)
+// @SystemApi
+public final class ThreadConfiguration implements Parcelable {
+    private final boolean mNat64Enabled;
+    private final boolean mDhcp6PdEnabled;
+
+    private ThreadConfiguration(Builder builder) {
+        this(builder.mNat64Enabled, builder.mDhcp6PdEnabled);
+    }
+
+    private ThreadConfiguration(boolean nat64Enabled, boolean dhcp6PdEnabled) {
+        this.mNat64Enabled = nat64Enabled;
+        this.mDhcp6PdEnabled = dhcp6PdEnabled;
+    }
+
+    /** Returns {@code true} if NAT64 is enabled. */
+    public boolean isNat64Enabled() {
+        return mNat64Enabled;
+    }
+
+    /** Returns {@code true} if DHCPv6 Prefix Delegation is enabled. */
+    public boolean isDhcp6PdEnabled() {
+        return mDhcp6PdEnabled;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this == other) {
+            return true;
+        } else if (!(other instanceof ThreadConfiguration)) {
+            return false;
+        } else {
+            ThreadConfiguration otherConfig = (ThreadConfiguration) other;
+            return mNat64Enabled == otherConfig.mNat64Enabled
+                    && mDhcp6PdEnabled == otherConfig.mDhcp6PdEnabled;
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mNat64Enabled, mDhcp6PdEnabled);
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append('{');
+        sb.append("Nat64Enabled=").append(mNat64Enabled);
+        sb.append(", Dhcp6PdEnabled=").append(mDhcp6PdEnabled);
+        sb.append('}');
+        return sb.toString();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(@NonNull Parcel dest, int flags) {
+        dest.writeBoolean(mNat64Enabled);
+        dest.writeBoolean(mDhcp6PdEnabled);
+    }
+
+    public static final @NonNull Creator<ThreadConfiguration> CREATOR =
+            new Creator<>() {
+                @Override
+                public ThreadConfiguration createFromParcel(Parcel in) {
+                    ThreadConfiguration.Builder builder = new ThreadConfiguration.Builder();
+                    builder.setNat64Enabled(in.readBoolean());
+                    builder.setDhcp6PdEnabled(in.readBoolean());
+                    return builder.build();
+                }
+
+                @Override
+                public ThreadConfiguration[] newArray(int size) {
+                    return new ThreadConfiguration[size];
+                }
+            };
+
+    /** The builder for creating {@link ThreadConfiguration} objects. */
+    public static final class Builder {
+        private boolean mNat64Enabled = false;
+        private boolean mDhcp6PdEnabled = false;
+
+        /** Creates a new {@link Builder} object with all features disabled. */
+        public Builder() {}
+
+        /**
+         * Creates a new {@link Builder} object from a {@link ThreadConfiguration} object.
+         *
+         * @param config the Border Router configurations to be copied
+         */
+        public Builder(@NonNull ThreadConfiguration config) {
+            Objects.requireNonNull(config);
+
+            mNat64Enabled = config.mNat64Enabled;
+            mDhcp6PdEnabled = config.mDhcp6PdEnabled;
+        }
+
+        /**
+         * Enables or disables NAT64 for the device.
+         *
+         * <p>Enabling this feature will allow Thread devices to connect to the internet/cloud over
+         * IPv4.
+         */
+        @NonNull
+        public Builder setNat64Enabled(boolean enabled) {
+            this.mNat64Enabled = enabled;
+            return this;
+        }
+
+        /**
+         * Enables or disables Prefix Delegation for the device.
+         *
+         * <p>Enabling this feature will allow Thread devices to connect to the internet/cloud over
+         * IPv6.
+         */
+        @NonNull
+        public Builder setDhcp6PdEnabled(boolean enabled) {
+            this.mDhcp6PdEnabled = enabled;
+            return this;
+        }
+
+        /** Creates a new {@link ThreadConfiguration} object. */
+        @NonNull
+        public ThreadConfiguration build() {
+            return new ThreadConfiguration(this);
+        }
+    }
+}
diff --git a/thread/framework/java/android/net/thread/ThreadNetworkController.java b/thread/framework/java/android/net/thread/ThreadNetworkController.java
index db761a3..30b3d6a 100644
--- a/thread/framework/java/android/net/thread/ThreadNetworkController.java
+++ b/thread/framework/java/android/net/thread/ThreadNetworkController.java
@@ -25,10 +25,12 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
+import android.annotation.Size;
 import android.annotation.SystemApi;
 import android.os.Binder;
 import android.os.OutcomeReceiver;
 import android.os.RemoteException;
+import android.util.SparseIntArray;
 
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
@@ -39,6 +41,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.Executor;
+import java.util.function.Consumer;
 
 /**
  * Provides the primary APIs for controlling all aspects of a Thread network.
@@ -98,6 +101,12 @@
     /** Thread standard version 1.3. */
     public static final int THREAD_VERSION_1_3 = 4;
 
+    /** Minimum value of max power in unit of 0.01dBm. @hide */
+    private static final int POWER_LIMITATION_MIN = -32768;
+
+    /** Maximum value of max power in unit of 0.01dBm. @hide */
+    private static final int POWER_LIMITATION_MAX = 32767;
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef({THREAD_VERSION_1_3})
@@ -116,6 +125,12 @@
     private final Map<OperationalDatasetCallback, OperationalDatasetCallbackProxy>
             mOpDatasetCallbackMap = new HashMap<>();
 
+    private final Object mConfigurationCallbackMapLock = new Object();
+
+    @GuardedBy("mConfigurationCallbackMapLock")
+    private final Map<Consumer<ThreadConfiguration>, ConfigurationCallbackProxy>
+            mConfigurationCallbackMap = new HashMap<>();
+
     /** @hide */
     public ThreadNetworkController(@NonNull IThreadNetworkController controllerService) {
         requireNonNull(controllerService, "controllerService cannot be null");
@@ -571,6 +586,97 @@
     }
 
     /**
+     * Configures the Thread features for this device.
+     *
+     * <p>This method sets the {@link ThreadConfiguration} for this device. On success, the {@link
+     * OutcomeReceiver#onResult} will be called, and the {@code configuration} will be applied and
+     * persisted to the device; the configuration changes can be observed by {@link
+     * #registerConfigurationCallback}. On failure, {@link OutcomeReceiver#onError} of {@code
+     * receiver} will be invoked with a specific error.
+     *
+     * @param configuration the configuration to set
+     * @param executor the executor to execute {@code receiver}
+     * @param receiver the receiver to receive result of this operation
+     * @hide
+     */
+    // @FlaggedApi(ThreadNetworkFlags.FLAG_CONFIGURATION_ENABLED)
+    // @RequiresPermission(permission.THREAD_NETWORK_PRIVILEGED)
+    public void setConfiguration(
+            @NonNull ThreadConfiguration configuration,
+            @NonNull @CallbackExecutor Executor executor,
+            @NonNull OutcomeReceiver<Void, ThreadNetworkException> receiver) {
+        requireNonNull(configuration, "Configuration cannot be null");
+        requireNonNull(executor, "executor cannot be null");
+        requireNonNull(receiver, "receiver cannot be null");
+        try {
+            mControllerService.setConfiguration(
+                    configuration, new OperationReceiverProxy(executor, receiver));
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Registers a callback to be called when the configuration is changed.
+     *
+     * <p>Upon return of this method, {@code callback} will be invoked immediately with the new
+     * {@link ThreadConfiguration}.
+     *
+     * @param executor the executor to execute the {@code callback}
+     * @param callback the callback to receive Thread configuration changes
+     * @throws IllegalArgumentException if {@code callback} has already been registered
+     * @hide
+     */
+    // @FlaggedApi(ThreadNetworkFlags.FLAG_CONFIGURATION_ENABLED)
+    // @RequiresPermission(permission.THREAD_NETWORK_PRIVILEGED)
+    public void registerConfigurationCallback(
+            @NonNull @CallbackExecutor Executor executor,
+            @NonNull Consumer<ThreadConfiguration> callback) {
+        requireNonNull(executor, "executor cannot be null");
+        requireNonNull(callback, "callback cannot be null");
+        synchronized (mConfigurationCallbackMapLock) {
+            if (mConfigurationCallbackMap.containsKey(callback)) {
+                throw new IllegalArgumentException("callback has already been registered");
+            }
+            ConfigurationCallbackProxy callbackProxy =
+                    new ConfigurationCallbackProxy(executor, callback);
+            mConfigurationCallbackMap.put(callback, callbackProxy);
+            try {
+                mControllerService.registerConfigurationCallback(callbackProxy);
+            } catch (RemoteException e) {
+                mConfigurationCallbackMap.remove(callback);
+                e.rethrowFromSystemServer();
+            }
+        }
+    }
+
+    /**
+     * Unregisters the configuration callback.
+     *
+     * @param callback the callback which has been registered with {@link
+     *     #registerConfigurationCallback}
+     * @throws IllegalArgumentException if {@code callback} hasn't been registered
+     * @hide
+     */
+    // @FlaggedApi(ThreadNetworkFlags.FLAG_CONFIGURATION_ENABLED)
+    // @RequiresPermission(permission.THREAD_NETWORK_PRIVILEGED)
+    public void unregisterConfigurationCallback(@NonNull Consumer<ThreadConfiguration> callback) {
+        requireNonNull(callback, "callback cannot be null");
+        synchronized (mConfigurationCallbackMapLock) {
+            ConfigurationCallbackProxy callbackProxy = mConfigurationCallbackMap.get(callback);
+            if (callbackProxy == null) {
+                throw new IllegalArgumentException("callback hasn't been registered");
+            }
+            try {
+                mControllerService.unregisterConfigurationCallback(callbackProxy);
+                mConfigurationCallbackMap.remove(callbackProxy.mConfigurationConsumer);
+            } catch (RemoteException e) {
+                e.rethrowFromSystemServer();
+            }
+        }
+    }
+
+    /**
      * Sets to use a specified test network as the upstream.
      *
      * @param testNetworkInterfaceName The name of the test network interface. When it's null,
@@ -596,6 +702,98 @@
         }
     }
 
+    /**
+     * Sets max power of each channel.
+     *
+     * <p>If not set, the default max power is set by the Thread HAL service or the Thread radio
+     * chip firmware.
+     *
+     * <p>On success, the Pending Dataset is successfully registered and persisted on the Leader and
+     * {@link OutcomeReceiver#onResult} of {@code receiver} will be called; When failed, {@link
+     * OutcomeReceiver#onError} will be called with a specific error:
+     *
+     * <ul>
+     *   <li>{@link ThreadNetworkException#ERROR_UNSUPPORTED_OPERATION} the operation is no
+     *       supported by the platform.
+     * </ul>
+     *
+     * @param channelMaxPowers SparseIntArray (key: channel, value: max power) consists of channel
+     *     and corresponding max power. Valid channel values should be between {@link
+     *     ActiveOperationalDataset#CHANNEL_MIN_24_GHZ} and {@link
+     *     ActiveOperationalDataset#CHANNEL_MAX_24_GHZ}. The unit of the max power is 0.01dBm. Max
+     *     power values should be between INT16_MIN (-32768) and INT16_MAX (32767). If the max power
+     *     is set to INT16_MAX, the corresponding channel is not supported.
+     * @param executor the executor to execute {@code receiver}.
+     * @param receiver the receiver to receive the result of this operation.
+     * @throws IllegalArgumentException if the size of {@code channelMaxPowers} is smaller than 1,
+     *     or invalid channel or max power is configured.
+     * @hide
+     */
+    @RequiresPermission("android.permission.THREAD_NETWORK_PRIVILEGED")
+    public final void setChannelMaxPowers(
+            @NonNull @Size(min = 1) SparseIntArray channelMaxPowers,
+            @NonNull @CallbackExecutor Executor executor,
+            @NonNull OutcomeReceiver<Void, ThreadNetworkException> receiver) {
+        requireNonNull(channelMaxPowers, "channelMaxPowers cannot be null");
+        requireNonNull(executor, "executor cannot be null");
+        requireNonNull(receiver, "receiver cannot be null");
+
+        if (channelMaxPowers.size() < 1) {
+            throw new IllegalArgumentException("channelMaxPowers cannot be empty");
+        }
+
+        for (int i = 0; i < channelMaxPowers.size(); i++) {
+            int channel = channelMaxPowers.keyAt(i);
+            int maxPower = channelMaxPowers.get(channel);
+
+            if ((channel < ActiveOperationalDataset.CHANNEL_MIN_24_GHZ)
+                    || (channel > ActiveOperationalDataset.CHANNEL_MAX_24_GHZ)) {
+                throw new IllegalArgumentException(
+                        "Channel "
+                                + channel
+                                + " exceeds allowed range ["
+                                + ActiveOperationalDataset.CHANNEL_MIN_24_GHZ
+                                + ", "
+                                + ActiveOperationalDataset.CHANNEL_MAX_24_GHZ
+                                + "]");
+            }
+
+            if ((maxPower < POWER_LIMITATION_MIN) || (maxPower > POWER_LIMITATION_MAX)) {
+                throw new IllegalArgumentException(
+                        "Channel power ({channel: "
+                                + channel
+                                + ", maxPower: "
+                                + maxPower
+                                + "}) exceeds allowed range ["
+                                + POWER_LIMITATION_MIN
+                                + ", "
+                                + POWER_LIMITATION_MAX
+                                + "]");
+            }
+        }
+
+        try {
+            mControllerService.setChannelMaxPowers(
+                    toChannelMaxPowerArray(channelMaxPowers),
+                    new OperationReceiverProxy(executor, receiver));
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    private static ChannelMaxPower[] toChannelMaxPowerArray(
+            @NonNull SparseIntArray channelMaxPowers) {
+        final ChannelMaxPower[] powerArray = new ChannelMaxPower[channelMaxPowers.size()];
+
+        for (int i = 0; i < channelMaxPowers.size(); i++) {
+            powerArray[i] = new ChannelMaxPower();
+            powerArray[i].channel = channelMaxPowers.keyAt(i);
+            powerArray[i].maxPower = channelMaxPowers.get(powerArray[i].channel);
+        }
+
+        return powerArray;
+    }
+
     private static <T> void propagateError(
             Executor executor,
             OutcomeReceiver<T, ThreadNetworkException> receiver,
@@ -664,4 +862,26 @@
             propagateError(mExecutor, mResultReceiver, errorCode, errorMessage);
         }
     }
+
+    private static final class ConfigurationCallbackProxy extends IConfigurationReceiver.Stub {
+        final Executor mExecutor;
+        final Consumer<ThreadConfiguration> mConfigurationConsumer;
+
+        ConfigurationCallbackProxy(
+                @CallbackExecutor Executor executor,
+                Consumer<ThreadConfiguration> ConfigurationConsumer) {
+            this.mExecutor = executor;
+            this.mConfigurationConsumer = ConfigurationConsumer;
+        }
+
+        @Override
+        public void onConfigurationChanged(ThreadConfiguration configuration) {
+            final long identity = Binder.clearCallingIdentity();
+            try {
+                mExecutor.execute(() -> mConfigurationConsumer.accept(configuration));
+            } finally {
+                Binder.restoreCallingIdentity(identity);
+            }
+        }
+    }
 }
diff --git a/thread/framework/java/android/net/thread/ThreadNetworkException.java b/thread/framework/java/android/net/thread/ThreadNetworkException.java
index 4def0fb..f699c30 100644
--- a/thread/framework/java/android/net/thread/ThreadNetworkException.java
+++ b/thread/framework/java/android/net/thread/ThreadNetworkException.java
@@ -138,8 +138,17 @@
      */
     public static final int ERROR_THREAD_DISABLED = 12;
 
+    /**
+     * The operation failed because it is not supported by the platform. For example, some platforms
+     * may not support setting the target power of each channel. The caller should not retry and may
+     * return an error to the user.
+     *
+     * @hide
+     */
+    public static final int ERROR_UNSUPPORTED_OPERATION = 13;
+
     private static final int ERROR_MIN = ERROR_INTERNAL_ERROR;
-    private static final int ERROR_MAX = ERROR_THREAD_DISABLED;
+    private static final int ERROR_MAX = ERROR_UNSUPPORTED_OPERATION;
 
     private final int mErrorCode;
 
diff --git a/thread/framework/java/android/net/thread/ThreadNetworkFlags.java b/thread/framework/java/android/net/thread/ThreadNetworkFlags.java
index e6ab988..691bbf5 100644
--- a/thread/framework/java/android/net/thread/ThreadNetworkFlags.java
+++ b/thread/framework/java/android/net/thread/ThreadNetworkFlags.java
@@ -27,5 +27,9 @@
     /** @hide */
     public static final String FLAG_THREAD_ENABLED = "com.android.net.thread.flags.thread_enabled";
 
+    /** @hide */
+    public static final String FLAG_CONFIGURATION_ENABLED =
+            "com.android.net.thread.flags.configuration_enabled";
+
     private ThreadNetworkFlags() {}
 }
diff --git a/thread/service/Android.bp b/thread/service/Android.bp
index 6e2fac1..a82a499 100644
--- a/thread/service/Android.bp
+++ b/thread/service/Android.bp
@@ -45,6 +45,9 @@
         "modules-utils-shell-command-handler",
         "net-utils-device-common",
         "net-utils-device-common-netlink",
+        // The required dependency net-utils-device-common-struct-base is in the classpath via
+        // framework-connectivity
+        "net-utils-device-common-struct",
         "ot-daemon-aidl-java",
     ],
     apex_available: ["com.android.tethering"],
diff --git a/thread/service/java/com/android/server/thread/ActiveOperationalDatasetReceiverWrapper.java b/thread/service/java/com/android/server/thread/ActiveOperationalDatasetReceiverWrapper.java
index e3b4e1a..43ff336 100644
--- a/thread/service/java/com/android/server/thread/ActiveOperationalDatasetReceiverWrapper.java
+++ b/thread/service/java/com/android/server/thread/ActiveOperationalDatasetReceiverWrapper.java
@@ -16,10 +16,12 @@
 
 package com.android.server.thread;
 
+import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR;
 import static android.net.thread.ThreadNetworkException.ERROR_UNAVAILABLE;
 
 import android.net.thread.ActiveOperationalDataset;
 import android.net.thread.IActiveOperationalDatasetReceiver;
+import android.net.thread.ThreadNetworkException;
 import android.os.RemoteException;
 
 import com.android.internal.annotations.GuardedBy;
@@ -73,6 +75,17 @@
         }
     }
 
+    public void onError(Throwable e) {
+        if (e instanceof ThreadNetworkException) {
+            ThreadNetworkException threadException = (ThreadNetworkException) e;
+            onError(threadException.getErrorCode(), threadException.getMessage());
+        } else if (e instanceof RemoteException) {
+            onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+        } else {
+            throw new AssertionError(e);
+        }
+    }
+
     public void onError(int errorCode, String errorMessage) {
         synchronized (sPendingReceiversLock) {
             sPendingReceivers.remove(this);
diff --git a/thread/service/java/com/android/server/thread/InfraInterfaceController.java b/thread/service/java/com/android/server/thread/InfraInterfaceController.java
index be54cbc..e72c9ee 100644
--- a/thread/service/java/com/android/server/thread/InfraInterfaceController.java
+++ b/thread/service/java/com/android/server/thread/InfraInterfaceController.java
@@ -16,14 +16,30 @@
 
 package com.android.server.thread;
 
-import android.os.ParcelFileDescriptor;
+import static android.system.OsConstants.IPPROTO_IPV6;
+import static android.system.OsConstants.IPPROTO_RAW;
+import static android.system.OsConstants.IPV6_CHECKSUM;
+import static android.system.OsConstants.IPV6_MULTICAST_HOPS;
+import static android.system.OsConstants.IPV6_RECVHOPLIMIT;
+import static android.system.OsConstants.IPV6_RECVPKTINFO;
+import static android.system.OsConstants.IPV6_UNICAST_HOPS;
 
+import android.net.util.SocketUtils;
+import android.os.ParcelFileDescriptor;
+import android.system.ErrnoException;
+import android.system.Os;
+
+import java.io.FileDescriptor;
 import java.io.IOException;
 
 /** Controller for the infrastructure network interface. */
 public class InfraInterfaceController {
     private static final String TAG = "InfraIfController";
 
+    private static final int ENABLE = 1;
+    private static final int IPV6_CHECKSUM_OFFSET = 2;
+    private static final int HOP_LIMIT = 255;
+
     static {
         System.loadLibrary("service-thread-jni");
     }
@@ -37,8 +53,21 @@
      * @throws IOException when fails to create the socket.
      */
     public ParcelFileDescriptor createIcmp6Socket(String infraInterfaceName) throws IOException {
-        return ParcelFileDescriptor.adoptFd(nativeCreateIcmp6Socket(infraInterfaceName));
+        ParcelFileDescriptor parcelFd =
+                ParcelFileDescriptor.adoptFd(nativeCreateFilteredIcmp6Socket());
+        FileDescriptor fd = parcelFd.getFileDescriptor();
+        try {
+            Os.setsockoptInt(fd, IPPROTO_RAW, IPV6_CHECKSUM, IPV6_CHECKSUM_OFFSET);
+            Os.setsockoptInt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, ENABLE);
+            Os.setsockoptInt(fd, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, ENABLE);
+            Os.setsockoptInt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, HOP_LIMIT);
+            Os.setsockoptInt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, HOP_LIMIT);
+            SocketUtils.bindSocketToInterface(fd, infraInterfaceName);
+        } catch (ErrnoException e) {
+            throw new IOException("Failed to setsockopt for the ICMPv6 socket", e);
+        }
+        return parcelFd;
     }
 
-    private static native int nativeCreateIcmp6Socket(String interfaceName) throws IOException;
+    private static native int nativeCreateFilteredIcmp6Socket() throws IOException;
 }
diff --git a/thread/service/java/com/android/server/thread/NsdPublisher.java b/thread/service/java/com/android/server/thread/NsdPublisher.java
index c74c023..1447ff8 100644
--- a/thread/service/java/com/android/server/thread/NsdPublisher.java
+++ b/thread/service/java/com/android/server/thread/NsdPublisher.java
@@ -19,9 +19,15 @@
 import static android.net.nsd.NsdManager.PROTOCOL_DNS_SD;
 
 import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.content.Context;
+import android.net.DnsResolver;
+import android.net.InetAddresses;
+import android.net.Network;
+import android.net.nsd.DiscoveryRequest;
 import android.net.nsd.NsdManager;
 import android.net.nsd.NsdServiceInfo;
+import android.os.CancellationSignal;
 import android.os.Handler;
 import android.os.RemoteException;
 import android.text.TextUtils;
@@ -30,14 +36,19 @@
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.thread.openthread.DnsTxtAttribute;
+import com.android.server.thread.openthread.INsdDiscoverServiceCallback;
 import com.android.server.thread.openthread.INsdPublisher;
+import com.android.server.thread.openthread.INsdResolveHostCallback;
+import com.android.server.thread.openthread.INsdResolveServiceCallback;
 import com.android.server.thread.openthread.INsdStatusReceiver;
 
-import java.util.ArrayDeque;
+import java.net.Inet6Address;
+import java.net.InetAddress;
 import java.util.ArrayList;
-import java.util.Deque;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.concurrent.Executor;
 
 /**
@@ -48,33 +59,38 @@
  *
  * <p>All the data members of this class MUST be accessed in the {@code mHandler}'s Thread except
  * {@code mHandler} itself.
- *
- * <p>TODO: b/323300118 - Remove the following mechanism when the race condition in NsdManager is
- * fixed.
- *
- * <p>There's always only one running registration job at any timepoint. All other pending jobs are
- * queued in {@code mRegistrationJobs}. When a registration job is complete (i.e. the according
- * method in {@link NsdManager.RegistrationListener} is called), it will start the next registration
- * job in the queue.
  */
 public final class NsdPublisher extends INsdPublisher.Stub {
-    // TODO: b/321883491 - specify network for mDNS operations
     private static final String TAG = NsdPublisher.class.getSimpleName();
+
+    // TODO: b/321883491 - specify network for mDNS operations
+    @Nullable private Network mNetwork;
     private final NsdManager mNsdManager;
+    private final DnsResolver mDnsResolver;
     private final Handler mHandler;
     private final Executor mExecutor;
     private final SparseArray<RegistrationListener> mRegistrationListeners = new SparseArray<>(0);
-    private final Deque<Runnable> mRegistrationJobs = new ArrayDeque<>();
+    private final SparseArray<DiscoveryListener> mDiscoveryListeners = new SparseArray<>(0);
+    private final SparseArray<ServiceInfoListener> mServiceInfoListeners = new SparseArray<>(0);
+    private final SparseArray<HostInfoListener> mHostInfoListeners = new SparseArray<>(0);
 
     @VisibleForTesting
-    public NsdPublisher(NsdManager nsdManager, Handler handler) {
+    public NsdPublisher(NsdManager nsdManager, DnsResolver dnsResolver, Handler handler) {
+        mNetwork = null;
         mNsdManager = nsdManager;
+        mDnsResolver = dnsResolver;
         mHandler = handler;
         mExecutor = runnable -> mHandler.post(runnable);
     }
 
     public static NsdPublisher newInstance(Context context, Handler handler) {
-        return new NsdPublisher(context.getSystemService(NsdManager.class), handler);
+        return new NsdPublisher(
+                context.getSystemService(NsdManager.class), DnsResolver.getInstance(), handler);
+    }
+
+    // TODO: b/321883491 - NsdPublisher should be disabled when mNetwork is null
+    public void setNetworkForHostResolution(@Nullable Network network) {
+        mNetwork = network;
     }
 
     @Override
@@ -87,13 +103,9 @@
             List<DnsTxtAttribute> txt,
             INsdStatusReceiver receiver,
             int listenerId) {
-        postRegistrationJob(
-                () -> {
-                    NsdServiceInfo serviceInfo =
-                            buildServiceInfoForService(
-                                    hostname, name, type, subTypeList, port, txt);
-                    registerInternal(serviceInfo, receiver, listenerId, "service");
-                });
+        NsdServiceInfo serviceInfo =
+                buildServiceInfoForService(hostname, name, type, subTypeList, port, txt);
+        mHandler.post(() -> registerInternal(serviceInfo, receiver, listenerId, "service"));
     }
 
     private static NsdServiceInfo buildServiceInfoForService(
@@ -119,6 +131,27 @@
         return serviceInfo;
     }
 
+    @Override
+    public void registerHost(
+            String name, List<String> addresses, INsdStatusReceiver receiver, int listenerId) {
+        NsdServiceInfo serviceInfo = buildServiceInfoForHost(name, addresses);
+        mHandler.post(() -> registerInternal(serviceInfo, receiver, listenerId, "host"));
+    }
+
+    private static NsdServiceInfo buildServiceInfoForHost(
+            String name, List<String> addressStrings) {
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+
+        serviceInfo.setHostname(name);
+        ArrayList<InetAddress> addresses = new ArrayList<>(addressStrings.size());
+        for (String addressString : addressStrings) {
+            addresses.add(InetAddresses.parseNumericAddress(addressString));
+        }
+        serviceInfo.setHostAddresses(addresses);
+
+        return serviceInfo;
+    }
+
     private void registerInternal(
             NsdServiceInfo serviceInfo,
             INsdStatusReceiver receiver,
@@ -144,7 +177,7 @@
     }
 
     public void unregister(INsdStatusReceiver receiver, int listenerId) {
-        postRegistrationJob(() -> unregisterInternal(receiver, listenerId));
+        mHandler.post(() -> unregisterInternal(receiver, listenerId));
     }
 
     public void unregisterInternal(INsdStatusReceiver receiver, int listenerId) {
@@ -171,6 +204,157 @@
         mNsdManager.unregisterService(registrationListener);
     }
 
+    @Override
+    public void discoverService(String type, INsdDiscoverServiceCallback callback, int listenerId) {
+        mHandler.post(() -> discoverServiceInternal(type, callback, listenerId));
+    }
+
+    private void discoverServiceInternal(
+            String type, INsdDiscoverServiceCallback callback, int listenerId) {
+        checkOnHandlerThread();
+        Log.i(
+                TAG,
+                "Discovering services."
+                        + " Listener ID: "
+                        + listenerId
+                        + ", service type: "
+                        + type);
+
+        DiscoveryListener listener = new DiscoveryListener(listenerId, type, callback);
+        mDiscoveryListeners.append(listenerId, listener);
+        DiscoveryRequest discoveryRequest =
+                new DiscoveryRequest.Builder(type).setNetwork(null).build();
+        mNsdManager.discoverServices(discoveryRequest, mExecutor, listener);
+    }
+
+    @Override
+    public void stopServiceDiscovery(int listenerId) {
+        mHandler.post(() -> stopServiceDiscoveryInternal(listenerId));
+    }
+
+    private void stopServiceDiscoveryInternal(int listenerId) {
+        checkOnHandlerThread();
+
+        DiscoveryListener listener = mDiscoveryListeners.get(listenerId);
+        if (listener == null) {
+            Log.w(
+                    TAG,
+                    "Failed to stop service discovery. Listener ID "
+                            + listenerId
+                            + ". The listener is null.");
+            return;
+        }
+
+        Log.i(TAG, "Stopping service discovery. Listener: " + listener);
+        mNsdManager.stopServiceDiscovery(listener);
+    }
+
+    @Override
+    public void resolveService(
+            String name, String type, INsdResolveServiceCallback callback, int listenerId) {
+        mHandler.post(() -> resolveServiceInternal(name, type, callback, listenerId));
+    }
+
+    private void resolveServiceInternal(
+            String name, String type, INsdResolveServiceCallback callback, int listenerId) {
+        checkOnHandlerThread();
+
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName(name);
+        serviceInfo.setServiceType(type);
+        serviceInfo.setNetwork(null);
+        Log.i(
+                TAG,
+                "Resolving service."
+                        + " Listener ID: "
+                        + listenerId
+                        + ", service name: "
+                        + name
+                        + ", service type: "
+                        + type);
+
+        ServiceInfoListener listener = new ServiceInfoListener(serviceInfo, listenerId, callback);
+        mServiceInfoListeners.append(listenerId, listener);
+        mNsdManager.registerServiceInfoCallback(serviceInfo, mExecutor, listener);
+    }
+
+    @Override
+    public void stopServiceResolution(int listenerId) {
+        mHandler.post(() -> stopServiceResolutionInternal(listenerId));
+    }
+
+    private void stopServiceResolutionInternal(int listenerId) {
+        checkOnHandlerThread();
+
+        ServiceInfoListener listener = mServiceInfoListeners.get(listenerId);
+        if (listener == null) {
+            Log.w(
+                    TAG,
+                    "Failed to stop service resolution. Listener ID: "
+                            + listenerId
+                            + ". The listener is null.");
+            return;
+        }
+
+        Log.i(TAG, "Stopping service resolution. Listener: " + listener);
+
+        try {
+            mNsdManager.unregisterServiceInfoCallback(listener);
+        } catch (IllegalArgumentException e) {
+            Log.w(
+                    TAG,
+                    "Failed to stop the service resolution because it's already stopped. Listener: "
+                            + listener);
+        }
+    }
+
+    @Override
+    public void resolveHost(String name, INsdResolveHostCallback callback, int listenerId) {
+        mHandler.post(() -> resolveHostInternal(name, callback, listenerId));
+    }
+
+    private void resolveHostInternal(
+            String name, INsdResolveHostCallback callback, int listenerId) {
+        checkOnHandlerThread();
+
+        String fullHostname = name + ".local";
+        CancellationSignal cancellationSignal = new CancellationSignal();
+        HostInfoListener listener =
+                new HostInfoListener(name, callback, cancellationSignal, listenerId);
+        mDnsResolver.query(
+                mNetwork,
+                fullHostname,
+                DnsResolver.FLAG_NO_CACHE_LOOKUP,
+                mExecutor,
+                cancellationSignal,
+                listener);
+        mHostInfoListeners.append(listenerId, listener);
+
+        Log.i(TAG, "Resolving host." + " Listener ID: " + listenerId + ", hostname: " + name);
+    }
+
+    @Override
+    public void stopHostResolution(int listenerId) {
+        mHandler.post(() -> stopHostResolutionInternal(listenerId));
+    }
+
+    private void stopHostResolutionInternal(int listenerId) {
+        checkOnHandlerThread();
+
+        HostInfoListener listener = mHostInfoListeners.get(listenerId);
+        if (listener == null) {
+            Log.w(
+                    TAG,
+                    "Failed to stop host resolution. Listener ID: "
+                            + listenerId
+                            + ". The listener is null.");
+            return;
+        }
+        Log.i(TAG, "Stopping host resolution. Listener: " + listener);
+        listener.cancel();
+        mHostInfoListeners.remove(listenerId);
+    }
+
     private void checkOnHandlerThread() {
         if (mHandler.getLooper().getThread() != Thread.currentThread()) {
             throw new IllegalStateException(
@@ -178,8 +362,12 @@
         }
     }
 
-    /** On ot-daemon died, unregister all registrations. */
-    public void onOtDaemonDied() {
+    @Override
+    public void reset() {
+        mHandler.post(this::resetInternal);
+    }
+
+    private void resetInternal() {
         checkOnHandlerThread();
         for (int i = 0; i < mRegistrationListeners.size(); ++i) {
             try {
@@ -198,37 +386,9 @@
         mRegistrationListeners.clear();
     }
 
-    // TODO: b/323300118 - Remove this mechanism when the race condition in NsdManager is fixed.
-    /** Fetch the first job from the queue and run it. See the class doc for more details. */
-    private void peekAndRun() {
-        if (mRegistrationJobs.isEmpty()) {
-            return;
-        }
-        Runnable job = mRegistrationJobs.getFirst();
-        job.run();
-    }
-
-    // TODO: b/323300118 - Remove this mechanism when the race condition in NsdManager is fixed.
-    /**
-     * Pop the first job from the queue and run the next job. See the class doc for more details.
-     */
-    private void popAndRunNext() {
-        if (mRegistrationJobs.isEmpty()) {
-            Log.i(TAG, "No registration jobs when trying to pop and run next.");
-            return;
-        }
-        mRegistrationJobs.removeFirst();
-        peekAndRun();
-    }
-
-    private void postRegistrationJob(Runnable registrationJob) {
-        mHandler.post(
-                () -> {
-                    mRegistrationJobs.addLast(registrationJob);
-                    if (mRegistrationJobs.size() == 1) {
-                        peekAndRun();
-                    }
-                });
+    /** On ot-daemon died, reset. */
+    public void onOtDaemonDied() {
+        reset();
     }
 
     private final class RegistrationListener implements NsdManager.RegistrationListener {
@@ -268,7 +428,6 @@
             } catch (RemoteException ignored) {
                 // do nothing if the client is dead
             }
-            popAndRunNext();
         }
 
         @Override
@@ -290,7 +449,6 @@
                     // do nothing if the client is dead
                 }
             }
-            popAndRunNext();
         }
 
         @Override
@@ -308,7 +466,6 @@
             } catch (RemoteException ignored) {
                 // do nothing if the client is dead
             }
-            popAndRunNext();
         }
 
         @Override
@@ -329,7 +486,241 @@
                 }
             }
             mRegistrationListeners.remove(mListenerId);
-            popAndRunNext();
+        }
+    }
+
+    private final class DiscoveryListener implements NsdManager.DiscoveryListener {
+        private final int mListenerId;
+        private final String mType;
+        private final INsdDiscoverServiceCallback mDiscoverServiceCallback;
+
+        DiscoveryListener(
+                int listenerId,
+                @NonNull String type,
+                @NonNull INsdDiscoverServiceCallback discoverServiceCallback) {
+            mListenerId = listenerId;
+            mType = type;
+            mDiscoverServiceCallback = discoverServiceCallback;
+        }
+
+        @Override
+        public void onStartDiscoveryFailed(String serviceType, int errorCode) {
+            Log.e(
+                    TAG,
+                    "Failed to start service discovery."
+                            + " Error code: "
+                            + errorCode
+                            + ", listener: "
+                            + this);
+            mDiscoveryListeners.remove(mListenerId);
+        }
+
+        @Override
+        public void onStopDiscoveryFailed(String serviceType, int errorCode) {
+            Log.e(
+                    TAG,
+                    "Failed to stop service discovery."
+                            + " Error code: "
+                            + errorCode
+                            + ", listener: "
+                            + this);
+            mDiscoveryListeners.remove(mListenerId);
+        }
+
+        @Override
+        public void onDiscoveryStarted(String serviceType) {
+            Log.i(TAG, "Started service discovery. Listener: " + this);
+        }
+
+        @Override
+        public void onDiscoveryStopped(String serviceType) {
+            Log.i(TAG, "Stopped service discovery. Listener: " + this);
+            mDiscoveryListeners.remove(mListenerId);
+        }
+
+        @Override
+        public void onServiceFound(NsdServiceInfo serviceInfo) {
+            Log.i(TAG, "Found service: " + serviceInfo);
+            try {
+                mDiscoverServiceCallback.onServiceDiscovered(
+                        serviceInfo.getServiceName(), mType, true);
+            } catch (RemoteException e) {
+                // do nothing if the client is dead
+            }
+        }
+
+        @Override
+        public void onServiceLost(NsdServiceInfo serviceInfo) {
+            Log.i(TAG, "Lost service: " + serviceInfo);
+            try {
+                mDiscoverServiceCallback.onServiceDiscovered(
+                        serviceInfo.getServiceName(), mType, false);
+            } catch (RemoteException e) {
+                // do nothing if the client is dead
+            }
+        }
+
+        @Override
+        public String toString() {
+            return "ID: " + mListenerId + ", type: " + mType;
+        }
+    }
+
+    private final class ServiceInfoListener implements NsdManager.ServiceInfoCallback {
+        private final String mName;
+        private final String mType;
+        private final INsdResolveServiceCallback mResolveServiceCallback;
+        private final int mListenerId;
+
+        ServiceInfoListener(
+                @NonNull NsdServiceInfo serviceInfo,
+                int listenerId,
+                @NonNull INsdResolveServiceCallback resolveServiceCallback) {
+            mName = serviceInfo.getServiceName();
+            mType = serviceInfo.getServiceType();
+            mListenerId = listenerId;
+            mResolveServiceCallback = resolveServiceCallback;
+        }
+
+        @Override
+        public void onServiceInfoCallbackRegistrationFailed(int errorCode) {
+            Log.e(
+                    TAG,
+                    "Failed to register service info callback."
+                            + " Listener ID: "
+                            + mListenerId
+                            + ", error: "
+                            + errorCode
+                            + ", service name: "
+                            + mName
+                            + ", service type: "
+                            + mType);
+        }
+
+        @Override
+        public void onServiceUpdated(@NonNull NsdServiceInfo serviceInfo) {
+            Log.i(
+                    TAG,
+                    "Service is resolved. "
+                            + " Listener ID: "
+                            + mListenerId
+                            + ", serviceInfo: "
+                            + serviceInfo);
+            List<String> addresses = new ArrayList<>();
+            for (InetAddress address : serviceInfo.getHostAddresses()) {
+                if (address instanceof Inet6Address) {
+                    addresses.add(address.getHostAddress());
+                }
+            }
+            List<DnsTxtAttribute> txtList = new ArrayList<>();
+            for (Map.Entry<String, byte[]> entry : serviceInfo.getAttributes().entrySet()) {
+                DnsTxtAttribute attribute =
+                        new DnsTxtAttribute(entry.getKey(), entry.getValue().clone());
+                txtList.add(attribute);
+            }
+            // TODO: b/329018320 - Use the serviceInfo.getExpirationTime to derive TTL.
+            int ttlSeconds = 10;
+            try {
+                mResolveServiceCallback.onServiceResolved(
+                        serviceInfo.getHostname(),
+                        serviceInfo.getServiceName(),
+                        serviceInfo.getServiceType(),
+                        serviceInfo.getPort(),
+                        addresses,
+                        txtList,
+                        ttlSeconds);
+
+            } catch (RemoteException e) {
+                // do nothing if the client is dead
+            }
+        }
+
+        @Override
+        public void onServiceLost() {}
+
+        @Override
+        public void onServiceInfoCallbackUnregistered() {
+            Log.i(TAG, "The service info callback is unregistered. Listener: " + this);
+            mServiceInfoListeners.remove(mListenerId);
+        }
+
+        @Override
+        public String toString() {
+            return "ID: " + mListenerId + ", service name: " + mName + ", service type: " + mType;
+        }
+    }
+
+    class HostInfoListener implements DnsResolver.Callback<List<InetAddress>> {
+        private final String mHostname;
+        private final INsdResolveHostCallback mResolveHostCallback;
+        private final CancellationSignal mCancellationSignal;
+        private final int mListenerId;
+
+        HostInfoListener(
+                @NonNull String hostname,
+                INsdResolveHostCallback resolveHostCallback,
+                CancellationSignal cancellationSignal,
+                int listenerId) {
+            this.mHostname = hostname;
+            this.mResolveHostCallback = resolveHostCallback;
+            this.mCancellationSignal = cancellationSignal;
+            this.mListenerId = listenerId;
+        }
+
+        @Override
+        public void onAnswer(@NonNull List<InetAddress> answerList, int rcode) {
+            checkOnHandlerThread();
+
+            Log.i(
+                    TAG,
+                    "Host is resolved."
+                            + " Listener ID: "
+                            + mListenerId
+                            + ", hostname: "
+                            + mHostname
+                            + ", addresses: "
+                            + answerList
+                            + ", return code: "
+                            + rcode);
+            List<String> addressStrings = new ArrayList<>();
+            for (InetAddress address : answerList) {
+                addressStrings.add(address.getHostAddress());
+            }
+            try {
+                mResolveHostCallback.onHostResolved(mHostname, addressStrings);
+            } catch (RemoteException e) {
+                // do nothing if the client is dead
+            }
+            mHostInfoListeners.remove(mListenerId);
+        }
+
+        @Override
+        public void onError(@NonNull DnsResolver.DnsException error) {
+            checkOnHandlerThread();
+
+            Log.i(
+                    TAG,
+                    "Failed to resolve host."
+                            + " Listener ID: "
+                            + mListenerId
+                            + ", hostname: "
+                            + mHostname,
+                    error);
+            try {
+                mResolveHostCallback.onHostResolved(mHostname, Collections.emptyList());
+            } catch (RemoteException e) {
+                // do nothing if the client is dead
+            }
+            mHostInfoListeners.remove(mListenerId);
+        }
+
+        public String toString() {
+            return "ID: " + mListenerId + ", hostname: " + mHostname;
+        }
+
+        void cancel() {
+            mCancellationSignal.cancel();
+            mHostInfoListeners.remove(mListenerId);
         }
     }
 }
diff --git a/thread/service/java/com/android/server/thread/OperationReceiverWrapper.java b/thread/service/java/com/android/server/thread/OperationReceiverWrapper.java
index a8909bc..bad63f3 100644
--- a/thread/service/java/com/android/server/thread/OperationReceiverWrapper.java
+++ b/thread/service/java/com/android/server/thread/OperationReceiverWrapper.java
@@ -16,9 +16,11 @@
 
 package com.android.server.thread;
 
+import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR;
 import static android.net.thread.ThreadNetworkException.ERROR_UNAVAILABLE;
 
 import android.net.thread.IOperationReceiver;
+import android.net.thread.ThreadNetworkException;
 import android.os.RemoteException;
 
 import com.android.internal.annotations.GuardedBy;
@@ -29,6 +31,7 @@
 /** A {@link IOperationReceiver} wrapper which makes it easier to invoke the callbacks. */
 final class OperationReceiverWrapper {
     private final IOperationReceiver mReceiver;
+    private final boolean mExpectOtDaemonDied;
 
     private static final Object sPendingReceiversLock = new Object();
 
@@ -36,7 +39,19 @@
     private static final Set<OperationReceiverWrapper> sPendingReceivers = new HashSet<>();
 
     public OperationReceiverWrapper(IOperationReceiver receiver) {
-        this.mReceiver = receiver;
+        this(receiver, false /* expectOtDaemonDied */);
+    }
+
+    /**
+     * Creates a new {@link OperationReceiverWrapper}.
+     *
+     * <p>If {@code expectOtDaemonDied} is {@code true}, it's expected that ot-daemon becomes dead
+     * before {@code receiver} is completed with {@code onSuccess} and {@code onError} and {@code
+     * receiver#onSuccess} will be invoked in this case.
+     */
+    public OperationReceiverWrapper(IOperationReceiver receiver, boolean expectOtDaemonDied) {
+        mReceiver = receiver;
+        mExpectOtDaemonDied = expectOtDaemonDied;
 
         synchronized (sPendingReceiversLock) {
             sPendingReceivers.add(this);
@@ -47,7 +62,11 @@
         synchronized (sPendingReceiversLock) {
             for (OperationReceiverWrapper receiver : sPendingReceivers) {
                 try {
-                    receiver.mReceiver.onError(ERROR_UNAVAILABLE, "Thread daemon died");
+                    if (receiver.mExpectOtDaemonDied) {
+                        receiver.mReceiver.onSuccess();
+                    } else {
+                        receiver.mReceiver.onError(ERROR_UNAVAILABLE, "Thread daemon died");
+                    }
                 } catch (RemoteException e) {
                     // The client is dead, do nothing
                 }
@@ -68,6 +87,17 @@
         }
     }
 
+    public void onError(Throwable e) {
+        if (e instanceof ThreadNetworkException) {
+            ThreadNetworkException threadException = (ThreadNetworkException) e;
+            onError(threadException.getErrorCode(), threadException.getMessage());
+        } else if (e instanceof RemoteException) {
+            onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+        } else {
+            throw new AssertionError(e);
+        }
+    }
+
     public void onError(int errorCode, String errorMessage, Object... messageArgs) {
         synchronized (sPendingReceiversLock) {
             sPendingReceivers.remove(this);
diff --git a/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java b/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
index 0623b87..2f60d9a 100644
--- a/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
+++ b/thread/service/java/com/android/server/thread/ThreadNetworkControllerService.java
@@ -40,6 +40,7 @@
 import static android.net.thread.ThreadNetworkException.ERROR_THREAD_DISABLED;
 import static android.net.thread.ThreadNetworkException.ERROR_TIMEOUT;
 import static android.net.thread.ThreadNetworkException.ERROR_UNSUPPORTED_CHANNEL;
+import static android.net.thread.ThreadNetworkException.ERROR_UNSUPPORTED_OPERATION;
 import static android.net.thread.ThreadNetworkManager.DISALLOW_THREAD_NETWORK;
 import static android.net.thread.ThreadNetworkManager.PERMISSION_THREAD_NETWORK_PRIVILEGED;
 
@@ -47,6 +48,7 @@
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_BUSY;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_FAILED_PRECONDITION;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_INVALID_STATE;
+import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_NOT_IMPLEMENTED;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_NO_BUFS;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_PARSE;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_REASSEMBLY_TIMEOUT;
@@ -59,6 +61,8 @@
 import static com.android.server.thread.openthread.IOtDaemon.OT_STATE_ENABLED;
 import static com.android.server.thread.openthread.IOtDaemon.TUN_IF_NAME;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import android.Manifest.permission;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -68,9 +72,9 @@
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.content.res.Resources;
 import android.net.ConnectivityManager;
 import android.net.InetAddresses;
-import android.net.LinkAddress;
 import android.net.LinkProperties;
 import android.net.LocalNetworkConfig;
 import android.net.LocalNetworkInfo;
@@ -85,15 +89,19 @@
 import android.net.TestNetworkSpecifier;
 import android.net.thread.ActiveOperationalDataset;
 import android.net.thread.ActiveOperationalDataset.SecurityPolicy;
+import android.net.thread.ChannelMaxPower;
 import android.net.thread.IActiveOperationalDatasetReceiver;
+import android.net.thread.IConfigurationReceiver;
 import android.net.thread.IOperationReceiver;
 import android.net.thread.IOperationalDatasetCallback;
 import android.net.thread.IStateCallback;
 import android.net.thread.IThreadNetworkController;
 import android.net.thread.OperationalDatasetTimestamp;
 import android.net.thread.PendingOperationalDataset;
+import android.net.thread.ThreadConfiguration;
 import android.net.thread.ThreadNetworkController;
 import android.net.thread.ThreadNetworkController.DeviceRole;
+import android.net.thread.ThreadNetworkException;
 import android.net.thread.ThreadNetworkException.ErrorCode;
 import android.os.Build;
 import android.os.Handler;
@@ -103,25 +111,33 @@
 import android.os.RemoteException;
 import android.os.SystemClock;
 import android.os.UserManager;
+import android.provider.Settings;
 import android.util.Log;
 import android.util.SparseArray;
 
+import com.android.connectivity.resources.R;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.server.ServiceManagerWrapper;
+import com.android.server.connectivity.ConnectivityResources;
 import com.android.server.thread.openthread.BackboneRouterState;
 import com.android.server.thread.openthread.BorderRouterConfigurationParcel;
+import com.android.server.thread.openthread.DnsTxtAttribute;
 import com.android.server.thread.openthread.IChannelMasksReceiver;
 import com.android.server.thread.openthread.IOtDaemon;
 import com.android.server.thread.openthread.IOtDaemonCallback;
 import com.android.server.thread.openthread.IOtStatusReceiver;
 import com.android.server.thread.openthread.Ipv6AddressInfo;
+import com.android.server.thread.openthread.MeshcopTxtAttributes;
+import com.android.server.thread.openthread.OnMeshPrefixConfig;
 import com.android.server.thread.openthread.OtDaemonState;
 
+import libcore.util.HexEncoding;
+
 import java.io.IOException;
 import java.net.Inet6Address;
-import java.net.InetAddress;
-import java.net.UnknownHostException;
 import java.security.SecureRandom;
+import java.time.Clock;
+import java.time.DateTimeException;
 import java.time.Instant;
 import java.util.HashMap;
 import java.util.List;
@@ -129,6 +145,7 @@
 import java.util.Objects;
 import java.util.Random;
 import java.util.function.Supplier;
+import java.util.regex.Pattern;
 
 /**
  * Implementation of the {@link ThreadNetworkController} API.
@@ -143,6 +160,19 @@
 final class ThreadNetworkControllerService extends IThreadNetworkController.Stub {
     private static final String TAG = "ThreadNetworkService";
 
+    // The model name length in utf-8 bytes
+    private static final int MAX_MODEL_NAME_UTF8_BYTES = 24;
+
+    // The max vendor name length in utf-8 bytes
+    private static final int MAX_VENDOR_NAME_UTF8_BYTES = 24;
+
+    // This regex pattern allows "XXXXXX", "XX:XX:XX" and "XX-XX-XX" OUI formats.
+    // Note that this regex allows "XX:XX-XX" as well but we don't need to be a strict checker
+    private static final String OUI_REGEX = "^([0-9A-Fa-f]{2}[:-]?){2}([0-9A-Fa-f]{2})$";
+
+    // The channel mask that indicates all channels from channel 11 to channel 24
+    private static final int CHANNEL_MASK_11_TO_24 = 0x1FFF800;
+
     // Below member fields can be accessed from both the binder and handler threads
 
     private final Context mContext;
@@ -159,7 +189,13 @@
     private final InfraInterfaceController mInfraIfController;
     private final NsdPublisher mNsdPublisher;
     private final OtDaemonCallbackProxy mOtDaemonCallbackProxy = new OtDaemonCallbackProxy();
+    private final ConnectivityResources mResources;
+    private final Supplier<String> mCountryCodeSupplier;
+    private final Map<IConfigurationReceiver, IBinder.DeathRecipient> mConfigurationReceivers =
+            new HashMap<>();
 
+    // This should not be directly used for calling IOtDaemon APIs because ot-daemon may die and
+    // {@code mOtDaemon} will be set to {@code null}. Instead, use {@code getOtDaemon()}
     @Nullable private IOtDaemon mOtDaemon;
     @Nullable private NetworkAgent mNetworkAgent;
     @Nullable private NetworkAgent mTestNetworkAgent;
@@ -174,6 +210,8 @@
     private final ThreadPersistentSettings mPersistentSettings;
     private final UserManager mUserManager;
     private boolean mUserRestricted;
+    private boolean mAirplaneModeOn;
+    private boolean mForceStopOtDaemonEnabled;
 
     private BorderRouterConfigurationParcel mBorderRouterConfig;
 
@@ -188,7 +226,9 @@
             InfraInterfaceController infraIfController,
             ThreadPersistentSettings persistentSettings,
             NsdPublisher nsdPublisher,
-            UserManager userManager) {
+            UserManager userManager,
+            ConnectivityResources resources,
+            Supplier<String> countryCodeSupplier) {
         mContext = context;
         mHandler = handler;
         mNetworkProvider = networkProvider;
@@ -202,10 +242,14 @@
         mPersistentSettings = persistentSettings;
         mNsdPublisher = nsdPublisher;
         mUserManager = userManager;
+        mResources = resources;
+        mCountryCodeSupplier = countryCodeSupplier;
     }
 
     public static ThreadNetworkControllerService newInstance(
-            Context context, ThreadPersistentSettings persistentSettings) {
+            Context context,
+            ThreadPersistentSettings persistentSettings,
+            Supplier<String> countryCodeSupplier) {
         HandlerThread handlerThread = new HandlerThread("ThreadHandlerThread");
         handlerThread.start();
         Handler handler = new Handler(handlerThread.getLooper());
@@ -222,39 +266,9 @@
                 new InfraInterfaceController(),
                 persistentSettings,
                 NsdPublisher.newInstance(context, handler),
-                context.getSystemService(UserManager.class));
-    }
-
-    private static Inet6Address bytesToInet6Address(byte[] addressBytes) {
-        try {
-            return (Inet6Address) Inet6Address.getByAddress(addressBytes);
-        } catch (UnknownHostException e) {
-            // This is unlikely to happen unless the Thread daemon is critically broken
-            return null;
-        }
-    }
-
-    private static InetAddress addressInfoToInetAddress(Ipv6AddressInfo addressInfo) {
-        return bytesToInet6Address(addressInfo.address);
-    }
-
-    private static LinkAddress newLinkAddress(Ipv6AddressInfo addressInfo) {
-        long deprecationTimeMillis =
-                addressInfo.isPreferred
-                        ? LinkAddress.LIFETIME_PERMANENT
-                        : SystemClock.elapsedRealtime();
-
-        InetAddress address = addressInfoToInetAddress(addressInfo);
-
-        // flags and scope will be adjusted automatically depending on the address and
-        // its lifetimes.
-        return new LinkAddress(
-                address,
-                addressInfo.prefixLength,
-                0 /* flags */,
-                0 /* scope */,
-                deprecationTimeMillis,
-                LinkAddress.LIFETIME_PERMANENT /* expirationTime */);
+                context.getSystemService(UserManager.class),
+                new ConnectivityResources(context),
+                countryCodeSupplier);
     }
 
     private NetworkRequest newUpstreamNetworkRequest() {
@@ -279,17 +293,31 @@
                 .build();
     }
 
-    private void initializeOtDaemon() {
+    private void maybeInitializeOtDaemon() {
+        if (!shouldEnableThread()) {
+            return;
+        }
+
+        Log.i(TAG, "Starting OT daemon...");
+
         try {
             getOtDaemon();
         } catch (RemoteException e) {
-            Log.e(TAG, "Failed to initialize ot-daemon");
+            Log.e(TAG, "Failed to initialize ot-daemon", e);
+        } catch (ThreadNetworkException e) {
+            // no ThreadNetworkException.ERROR_THREAD_DISABLED error should be thrown
+            throw new AssertionError(e);
         }
     }
 
-    private IOtDaemon getOtDaemon() throws RemoteException {
+    private IOtDaemon getOtDaemon() throws RemoteException, ThreadNetworkException {
         checkOnHandlerThread();
 
+        if (mForceStopOtDaemonEnabled) {
+            throw new ThreadNetworkException(
+                    ERROR_THREAD_DISABLED, "ot-daemon is forcibly stopped");
+        }
+
         if (mOtDaemon != null) {
             return mOtDaemon;
         }
@@ -298,29 +326,89 @@
         if (otDaemon == null) {
             throw new RemoteException("Internal error: failed to start OT daemon");
         }
-        otDaemon.initialize(mTunIfController.getTunFd(), isEnabled(), mNsdPublisher);
-        otDaemon.registerStateCallback(mOtDaemonCallbackProxy, -1);
+
+        otDaemon.initialize(
+                mTunIfController.getTunFd(),
+                shouldEnableThread(),
+                mNsdPublisher,
+                getMeshcopTxtAttributes(mResources.get()),
+                mOtDaemonCallbackProxy,
+                mCountryCodeSupplier.get());
         otDaemon.asBinder().linkToDeath(() -> mHandler.post(this::onOtDaemonDied), 0);
         mOtDaemon = otDaemon;
         return mOtDaemon;
     }
 
+    @VisibleForTesting
+    static MeshcopTxtAttributes getMeshcopTxtAttributes(Resources resources) {
+        final String modelName = resources.getString(R.string.config_thread_model_name);
+        final String vendorName = resources.getString(R.string.config_thread_vendor_name);
+        final String vendorOui = resources.getString(R.string.config_thread_vendor_oui);
+        final boolean managedByGoogle =
+                resources.getBoolean(R.bool.config_thread_managed_by_google_home);
+
+        if (!modelName.isEmpty()) {
+            if (modelName.getBytes(UTF_8).length > MAX_MODEL_NAME_UTF8_BYTES) {
+                throw new IllegalStateException(
+                        "Model name is longer than "
+                                + MAX_MODEL_NAME_UTF8_BYTES
+                                + "utf-8 bytes: "
+                                + modelName);
+            }
+        }
+
+        if (!vendorName.isEmpty()) {
+            if (vendorName.getBytes(UTF_8).length > MAX_VENDOR_NAME_UTF8_BYTES) {
+                throw new IllegalStateException(
+                        "Vendor name is longer than "
+                                + MAX_VENDOR_NAME_UTF8_BYTES
+                                + " utf-8 bytes: "
+                                + vendorName);
+            }
+        }
+
+        if (!vendorOui.isEmpty() && !Pattern.compile(OUI_REGEX).matcher(vendorOui).matches()) {
+            throw new IllegalStateException("Vendor OUI is invalid: " + vendorOui);
+        }
+
+        MeshcopTxtAttributes meshcopTxts = new MeshcopTxtAttributes();
+        meshcopTxts.modelName = modelName;
+        meshcopTxts.vendorName = vendorName;
+        meshcopTxts.vendorOui = HexEncoding.decode(vendorOui.replace("-", "").replace(":", ""));
+        meshcopTxts.nonStandardTxtEntries = List.of(makeManagedByGoogleTxtAttr(managedByGoogle));
+
+        return meshcopTxts;
+    }
+
+    /**
+     * Creates a DNS-SD TXT entry for indicating whether Thread on this device is managed by Google.
+     *
+     * @return TXT entry "vgh=1" if {@code managedByGoogle} is {@code true}; otherwise, "vgh=0"
+     */
+    private static DnsTxtAttribute makeManagedByGoogleTxtAttr(boolean managedByGoogle) {
+        final byte[] value = (managedByGoogle ? "1" : "0").getBytes(UTF_8);
+        return new DnsTxtAttribute("vgh", value);
+    }
+
     private void onOtDaemonDied() {
         checkOnHandlerThread();
-        Log.w(TAG, "OT daemon is dead, clean up and restart it...");
+        Log.w(TAG, "OT daemon is dead, clean up...");
 
         OperationReceiverWrapper.onOtDaemonDied();
         mOtDaemonCallbackProxy.onOtDaemonDied();
         mTunIfController.onOtDaemonDied();
         mNsdPublisher.onOtDaemonDied();
         mOtDaemon = null;
-        initializeOtDaemon();
+        maybeInitializeOtDaemon();
     }
 
     public void initialize() {
         mHandler.post(
                 () -> {
-                    Log.d(TAG, "Initializing Thread system service...");
+                    Log.d(
+                            TAG,
+                            "Initializing Thread system service: Thread is "
+                                    + (shouldEnableThread() ? "enabled" : "disabled"));
                     try {
                         mTunIfController.createTunInterface();
                     } catch (IOException e) {
@@ -332,10 +420,61 @@
                     requestThreadNetwork();
                     mUserRestricted = isThreadUserRestricted();
                     registerUserRestrictionsReceiver();
-                    initializeOtDaemon();
+                    mAirplaneModeOn = isAirplaneModeOn();
+                    registerAirplaneModeReceiver();
+                    maybeInitializeOtDaemon();
                 });
     }
 
+    /**
+     * Force stops ot-daemon immediately and prevents ot-daemon from being restarted by
+     * system_server again.
+     *
+     * <p>This is for VTS testing only.
+     */
+    @RequiresPermission(PERMISSION_THREAD_NETWORK_PRIVILEGED)
+    void forceStopOtDaemonForTest(boolean enabled, @NonNull IOperationReceiver receiver) {
+        enforceAllPermissionsGranted(PERMISSION_THREAD_NETWORK_PRIVILEGED);
+
+        mHandler.post(
+                () ->
+                        forceStopOtDaemonForTestInternal(
+                                enabled,
+                                new OperationReceiverWrapper(
+                                        receiver, true /* expectOtDaemonDied */)));
+    }
+
+    private void forceStopOtDaemonForTestInternal(
+            boolean enabled, @NonNull OperationReceiverWrapper receiver) {
+        checkOnHandlerThread();
+        if (enabled == mForceStopOtDaemonEnabled) {
+            receiver.onSuccess();
+            return;
+        }
+
+        if (!enabled) {
+            mForceStopOtDaemonEnabled = false;
+            maybeInitializeOtDaemon();
+            receiver.onSuccess();
+            return;
+        }
+
+        try {
+            getOtDaemon().terminate();
+            // Do not invoke the {@code receiver} callback here but wait for ot-daemon to
+            // become dead, so that it's guaranteed that ot-daemon is stopped when {@code
+            // receiver} is completed
+        } catch (RemoteException e) {
+            Log.e(TAG, "otDaemon.terminate failed", e);
+            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+        } catch (ThreadNetworkException e) {
+            // No ThreadNetworkException.ERROR_THREAD_DISABLED error will be thrown
+            throw new AssertionError(e);
+        } finally {
+            mForceStopOtDaemonEnabled = true;
+        }
+    }
+
     public void setEnabled(boolean isEnabled, @NonNull IOperationReceiver receiver) {
         enforceAllPermissionsGranted(PERMISSION_THREAD_NETWORK_PRIVILEGED);
 
@@ -349,6 +488,7 @@
 
     private void setEnabledInternal(
             boolean isEnabled, boolean persist, @NonNull OperationReceiverWrapper receiver) {
+        checkOnHandlerThread();
         if (isEnabled && isThreadUserRestricted()) {
             receiver.onError(
                     ERROR_FAILED_PRECONDITION,
@@ -356,32 +496,112 @@
             return;
         }
 
+        Log.i(TAG, "Set Thread enabled: " + isEnabled + ", persist: " + persist);
+
         if (persist) {
             // The persistent setting keeps the desired enabled state, thus it's set regardless
             // the otDaemon set enabled state operation succeeded or not, so that it can recover
             // to the desired value after reboot.
             mPersistentSettings.put(ThreadPersistentSettings.THREAD_ENABLED.key, isEnabled);
+
+            // Remember whether the user wanted to keep Thread enabled in airplane mode. If once
+            // the user disabled Thread again in airplane mode, the persistent settings state is
+            // reset (so that Thread will be auto-disabled again when airplane mode is turned on).
+            // This behavior is consistent with Wi-Fi and bluetooth.
+            if (mAirplaneModeOn) {
+                mPersistentSettings.put(
+                        ThreadPersistentSettings.THREAD_ENABLED_IN_AIRPLANE_MODE.key, isEnabled);
+            }
         }
 
         try {
             getOtDaemon().setThreadEnabled(isEnabled, newOtStatusReceiver(receiver));
-        } catch (RemoteException e) {
+        } catch (RemoteException | ThreadNetworkException e) {
             Log.e(TAG, "otDaemon.setThreadEnabled failed", e);
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+            receiver.onError(e);
         }
     }
 
+    @Override
+    public void setConfiguration(
+            @NonNull ThreadConfiguration configuration, @NonNull IOperationReceiver receiver) {
+        enforceAllPermissionsGranted(PERMISSION_THREAD_NETWORK_PRIVILEGED);
+        mHandler.post(() -> setConfigurationInternal(configuration, receiver));
+    }
+
+    private void setConfigurationInternal(
+            @NonNull ThreadConfiguration configuration,
+            @NonNull IOperationReceiver operationReceiver) {
+        checkOnHandlerThread();
+
+        Log.i(TAG, "Set Thread configuration: " + configuration);
+
+        final boolean changed = mPersistentSettings.putConfiguration(configuration);
+        try {
+            operationReceiver.onSuccess();
+        } catch (RemoteException e) {
+            // do nothing if the client is dead
+        }
+        if (changed) {
+            for (IConfigurationReceiver configReceiver : mConfigurationReceivers.keySet()) {
+                try {
+                    configReceiver.onConfigurationChanged(configuration);
+                } catch (RemoteException e) {
+                    // do nothing if the client is dead
+                }
+            }
+        }
+    }
+
+    @Override
+    public void registerConfigurationCallback(@NonNull IConfigurationReceiver callback) {
+        enforceAllPermissionsGranted(permission.THREAD_NETWORK_PRIVILEGED);
+        mHandler.post(() -> registerConfigurationCallbackInternal(callback));
+    }
+
+    private void registerConfigurationCallbackInternal(@NonNull IConfigurationReceiver callback) {
+        checkOnHandlerThread();
+        if (mConfigurationReceivers.containsKey(callback)) {
+            throw new IllegalStateException("Registering the same IConfigurationReceiver twice");
+        }
+        IBinder.DeathRecipient deathRecipient =
+                () -> mHandler.post(() -> unregisterConfigurationCallbackInternal(callback));
+        try {
+            callback.asBinder().linkToDeath(deathRecipient, 0);
+        } catch (RemoteException e) {
+            return;
+        }
+        mConfigurationReceivers.put(callback, deathRecipient);
+        try {
+            callback.onConfigurationChanged(mPersistentSettings.getConfiguration());
+        } catch (RemoteException e) {
+            // do nothing if the client is dead
+        }
+    }
+
+    @Override
+    public void unregisterConfigurationCallback(@NonNull IConfigurationReceiver callback) {
+        enforceAllPermissionsGranted(permission.THREAD_NETWORK_PRIVILEGED);
+        mHandler.post(() -> unregisterConfigurationCallbackInternal(callback));
+    }
+
+    private void unregisterConfigurationCallbackInternal(@NonNull IConfigurationReceiver callback) {
+        checkOnHandlerThread();
+        if (!mConfigurationReceivers.containsKey(callback)) {
+            return;
+        }
+        callback.asBinder().unlinkToDeath(mConfigurationReceivers.remove(callback), 0);
+    }
+
     private void registerUserRestrictionsReceiver() {
         mContext.registerReceiver(
                 new BroadcastReceiver() {
                     @Override
                     public void onReceive(Context context, Intent intent) {
-                        onUserRestrictionsChanged(isThreadUserRestricted());
+                        mHandler.post(() -> onUserRestrictionsChanged(isThreadUserRestricted()));
                     }
                 },
-                new IntentFilter(UserManager.ACTION_USER_RESTRICTIONS_CHANGED),
-                null /* broadcastPermission */,
-                mHandler);
+                new IntentFilter(UserManager.ACTION_USER_RESTRICTIONS_CHANGED));
     }
 
     private void onUserRestrictionsChanged(boolean newUserRestrictedState) {
@@ -397,34 +617,30 @@
                         + newUserRestrictedState);
         mUserRestricted = newUserRestrictedState;
 
-        final boolean isEnabled = isEnabled();
+        final boolean shouldEnableThread = shouldEnableThread();
         final IOperationReceiver receiver =
                 new IOperationReceiver.Stub() {
                     @Override
                     public void onSuccess() {
                         Log.d(
                                 TAG,
-                                (isEnabled ? "Enabled" : "Disabled")
+                                (shouldEnableThread ? "Enabled" : "Disabled")
                                         + " Thread due to user restriction change");
                     }
 
                     @Override
-                    public void onError(int otError, String messages) {
+                    public void onError(int errorCode, String errorMessage) {
                         Log.e(
                                 TAG,
                                 "Failed to "
-                                        + (isEnabled ? "enable" : "disable")
+                                        + (shouldEnableThread ? "enable" : "disable")
                                         + " Thread for user restriction change");
                     }
                 };
         // Do not save the user restriction state to persistent settings so that the user
         // configuration won't be overwritten
-        setEnabledInternal(isEnabled, false /* persist */, new OperationReceiverWrapper(receiver));
-    }
-
-    /** Returns {@code true} if Thread is set enabled. */
-    private boolean isEnabled() {
-        return !mUserRestricted && mPersistentSettings.get(ThreadPersistentSettings.THREAD_ENABLED);
+        setEnabledInternal(
+                shouldEnableThread, false /* persist */, new OperationReceiverWrapper(receiver));
     }
 
     /** Returns {@code true} if Thread has been restricted for the user. */
@@ -432,6 +648,75 @@
         return mUserManager.hasUserRestriction(DISALLOW_THREAD_NETWORK);
     }
 
+    private void registerAirplaneModeReceiver() {
+        mContext.registerReceiver(
+                new BroadcastReceiver() {
+                    @Override
+                    public void onReceive(Context context, Intent intent) {
+                        mHandler.post(() -> onAirplaneModeChanged(isAirplaneModeOn()));
+                    }
+                },
+                new IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED));
+    }
+
+    private void onAirplaneModeChanged(boolean newAirplaneModeOn) {
+        checkOnHandlerThread();
+        if (mAirplaneModeOn == newAirplaneModeOn) {
+            return;
+        }
+        Log.i(TAG, "Airplane mode changed: " + mAirplaneModeOn + " -> " + newAirplaneModeOn);
+        mAirplaneModeOn = newAirplaneModeOn;
+
+        final boolean shouldEnableThread = shouldEnableThread();
+        final IOperationReceiver receiver =
+                new IOperationReceiver.Stub() {
+                    @Override
+                    public void onSuccess() {
+                        Log.d(
+                                TAG,
+                                (shouldEnableThread ? "Enabled" : "Disabled")
+                                        + " Thread due to airplane mode change");
+                    }
+
+                    @Override
+                    public void onError(int errorCode, String errorMessage) {
+                        Log.e(
+                                TAG,
+                                "Failed to "
+                                        + (shouldEnableThread ? "enable" : "disable")
+                                        + " Thread for airplane mode change");
+                    }
+                };
+        // Do not save the user restriction state to persistent settings so that the user
+        // configuration won't be overwritten
+        setEnabledInternal(
+                shouldEnableThread, false /* persist */, new OperationReceiverWrapper(receiver));
+    }
+
+    /** Returns {@code true} if Airplane mode has been turned on. */
+    private boolean isAirplaneModeOn() {
+        return Settings.Global.getInt(
+                        mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0)
+                == 1;
+    }
+
+    /**
+     * Returns {@code true} if Thread should be enabled based on current settings, runtime user
+     * restriction and airplane mode state.
+     */
+    private boolean shouldEnableThread() {
+        final boolean enabledInAirplaneMode =
+                mPersistentSettings.get(ThreadPersistentSettings.THREAD_ENABLED_IN_AIRPLANE_MODE);
+
+        return !mForceStopOtDaemonEnabled
+                && !mUserRestricted
+                // FIXME(b/340744397): Note that here we need to call `isAirplaneModeOn()` to get
+                // the latest state of airplane mode but can't use `mIsAirplaneMode`. This is for
+                // avoiding the race conditions described in b/340744397
+                && (!isAirplaneModeOn() || enabledInAirplaneMode)
+                && mPersistentSettings.get(ThreadPersistentSettings.THREAD_ENABLED);
+    }
+
     private void requestUpstreamNetwork() {
         if (mUpstreamNetworkCallback != null) {
             throw new AssertionError("The upstream network request is already there.");
@@ -489,7 +774,14 @@
         @Override
         public void onAvailable(@NonNull Network network) {
             checkOnHandlerThread();
-            Log.i(TAG, "Thread network available: " + network);
+            Log.i(TAG, "Thread network is available: " + network);
+        }
+
+        @Override
+        public void onLost(@NonNull Network network) {
+            checkOnHandlerThread();
+            Log.i(TAG, "Thread network is lost: " + network);
+            disableBorderRouting();
         }
 
         @Override
@@ -504,7 +796,7 @@
                             + localNetworkInfo
                             + "}");
             if (localNetworkInfo.getUpstreamNetwork() == null) {
-                mUpstreamNetwork = null;
+                disableBorderRouting();
                 return;
             }
             if (!localNetworkInfo.getUpstreamNetwork().equals(mUpstreamNetwork)) {
@@ -512,6 +804,7 @@
                 if (mNetworkToInterface.containsKey(mUpstreamNetwork)) {
                     enableBorderRouting(mNetworkToInterface.get(mUpstreamNetwork));
                 }
+                mNsdPublisher.setNetworkForHostResolution(mUpstreamNetwork);
             }
         }
     }
@@ -523,6 +816,7 @@
                         // requirement.
                         .clearCapabilities()
                         .addTransportType(NetworkCapabilities.TRANSPORT_THREAD)
+                        .addCapability(NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK)
                         .build(),
                 new ThreadNetworkCallback(),
                 mHandler);
@@ -543,6 +837,7 @@
                 new NetworkCapabilities.Builder()
                         .addTransportType(NetworkCapabilities.TRANSPORT_THREAD)
                         .addCapability(NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK)
+                        .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)
                         .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED)
                         .build();
         final NetworkScore score =
@@ -604,9 +899,9 @@
 
         try {
             getOtDaemon().getChannelMasks(newChannelMasksReceiver(networkName, receiver));
-        } catch (RemoteException e) {
+        } catch (RemoteException | ThreadNetworkException e) {
             Log.e(TAG, "otDaemon.getChannelMasks failed", e);
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+            receiver.onError(e);
         }
     }
 
@@ -620,7 +915,6 @@
                                 networkName,
                                 supportedChannelMask,
                                 preferredChannelMask,
-                                Instant.now(),
                                 new Random(),
                                 new SecureRandom());
 
@@ -638,9 +932,18 @@
             String networkName,
             int supportedChannelMask,
             int preferredChannelMask,
-            Instant now,
             Random random,
             SecureRandom secureRandom) {
+        boolean authoritative = false;
+        Instant now = Instant.now();
+        try {
+            Clock clock = SystemClock.currentNetworkTimeClock();
+            now = clock.instant();
+            authoritative = true;
+        } catch (DateTimeException e) {
+            Log.w(TAG, "Failed to get authoritative time", e);
+        }
+
         int panId = random.nextInt(/* bound= */ 0xffff);
         final byte[] meshLocalPrefix = newRandomBytes(random, LENGTH_MESH_LOCAL_PREFIX_BITS / 8);
         meshLocalPrefix[0] = MESH_LOCAL_PREFIX_FIRST_BYTE;
@@ -652,9 +955,7 @@
         final byte[] securityFlags = new byte[] {(byte) 0xff, (byte) 0xf8};
 
         return new ActiveOperationalDataset.Builder()
-                .setActiveTimestamp(
-                        new OperationalDatasetTimestamp(
-                                now.getEpochSecond() & 0xffffffffffffL, 0, false))
+                .setActiveTimestamp(OperationalDatasetTimestamp.fromInstant(now, authoritative))
                 .setExtendedPanId(newRandomBytes(random, LENGTH_EXTENDED_PAN_ID))
                 .setPanId(panId)
                 .setNetworkName(networkName)
@@ -669,6 +970,14 @@
 
     private static int selectChannel(
             int supportedChannelMask, int preferredChannelMask, Random random) {
+        // Due to radio hardware performance reasons, many Thread radio chips need to reduce their
+        // transmit power on edge channels to pass regulatory RF certification. Thread edge channel
+        // 25 and 26 are not preferred here.
+        //
+        // If users want to use channel 25 or 26, they can change the channel via the method
+        // ActiveOperationalDataset.Builder(activeOperationalDataset).setChannel(channel).build().
+        preferredChannelMask = preferredChannelMask & CHANNEL_MASK_11_TO_24;
+
         // If the preferred channel mask is not empty, select a random channel from it, otherwise
         // choose one from the supported channel mask.
         preferredChannelMask = preferredChannelMask & supportedChannelMask;
@@ -752,7 +1061,11 @@
 
     private void checkOnHandlerThread() {
         if (Looper.myLooper() != mHandler.getLooper()) {
-            Log.wtf(TAG, "Must be on the handler thread!");
+            throw new IllegalStateException(
+                    "Not running on ThreadNetworkControllerService thread ("
+                            + mHandler.getLooper()
+                            + ") : "
+                            + Looper.myLooper());
         }
     }
 
@@ -778,6 +1091,8 @@
                 return ERROR_ABORTED;
             case OT_ERROR_BUSY:
                 return ERROR_BUSY;
+            case OT_ERROR_NOT_IMPLEMENTED:
+                return ERROR_UNSUPPORTED_OPERATION;
             case OT_ERROR_NO_BUFS:
                 return ERROR_RESOURCE_EXHAUSTED;
             case OT_ERROR_PARSE:
@@ -816,9 +1131,9 @@
         try {
             // The otDaemon.join() will leave first if this device is currently attached
             getOtDaemon().join(activeDataset.toThreadTlvs(), newOtStatusReceiver(receiver));
-        } catch (RemoteException e) {
+        } catch (RemoteException | ThreadNetworkException e) {
             Log.e(TAG, "otDaemon.join failed", e);
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+            receiver.onError(e);
         }
     }
 
@@ -841,14 +1156,14 @@
             getOtDaemon()
                     .scheduleMigration(
                             pendingDataset.toThreadTlvs(), newOtStatusReceiver(receiver));
-        } catch (RemoteException e) {
+        } catch (RemoteException | ThreadNetworkException e) {
             Log.e(TAG, "otDaemon.scheduleMigration failed", e);
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+            receiver.onError(e);
         }
     }
 
     @Override
-    public void leave(@NonNull IOperationReceiver receiver) throws RemoteException {
+    public void leave(@NonNull IOperationReceiver receiver) {
         enforceAllPermissionsGranted(PERMISSION_THREAD_NETWORK_PRIVILEGED);
 
         mHandler.post(() -> leaveInternal(new OperationReceiverWrapper(receiver)));
@@ -859,9 +1174,9 @@
 
         try {
             getOtDaemon().leave(newOtStatusReceiver(receiver));
-        } catch (RemoteException e) {
-            // Oneway AIDL API should never throw?
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+        } catch (RemoteException | ThreadNetworkException e) {
+            Log.e(TAG, "otDaemon.leave failed", e);
+            receiver.onError(e);
         }
     }
 
@@ -883,11 +1198,18 @@
             String countryCode, @NonNull OperationReceiverWrapper receiver) {
         checkOnHandlerThread();
 
+        // Fails early to avoid waking up ot-daemon by the ThreadNetworkCountryCode class
+        if (!shouldEnableThread()) {
+            receiver.onError(
+                    ERROR_THREAD_DISABLED, "Can't set country code when Thread is disabled");
+            return;
+        }
+
         try {
             getOtDaemon().setCountryCode(countryCode, newOtStatusReceiver(receiver));
-        } catch (RemoteException e) {
+        } catch (RemoteException | ThreadNetworkException e) {
             Log.e(TAG, "otDaemon.setCountryCode failed", e);
-            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+            receiver.onError(e);
         }
     }
 
@@ -923,6 +1245,30 @@
         }
     }
 
+    @RequiresPermission(PERMISSION_THREAD_NETWORK_PRIVILEGED)
+    public void setChannelMaxPowers(
+            @NonNull ChannelMaxPower[] channelMaxPowers, @NonNull IOperationReceiver receiver) {
+        enforceAllPermissionsGranted(PERMISSION_THREAD_NETWORK_PRIVILEGED);
+
+        mHandler.post(
+                () ->
+                        setChannelMaxPowersInternal(
+                                channelMaxPowers, new OperationReceiverWrapper(receiver)));
+    }
+
+    private void setChannelMaxPowersInternal(
+            @NonNull ChannelMaxPower[] channelMaxPowers,
+            @NonNull OperationReceiverWrapper receiver) {
+        checkOnHandlerThread();
+
+        try {
+            getOtDaemon().setChannelMaxPowers(channelMaxPowers, newOtStatusReceiver(receiver));
+        } catch (RemoteException | ThreadNetworkException e) {
+            Log.e(TAG, "otDaemon.setChannelMaxPowers failed", e);
+            receiver.onError(ERROR_INTERNAL_ERROR, "Thread stack error");
+        }
+    }
+
     private void enableBorderRouting(String infraIfName) {
         if (mBorderRouterConfig.isBorderRoutingEnabled
                 && infraIfName.equals(mBorderRouterConfig.infraInterfaceName)) {
@@ -935,24 +1281,25 @@
                     mInfraIfController.createIcmp6Socket(infraIfName);
             mBorderRouterConfig.isBorderRoutingEnabled = true;
 
-            mOtDaemon.configureBorderRouter(
-                    mBorderRouterConfig,
-                    new IOtStatusReceiver.Stub() {
-                        @Override
-                        public void onSuccess() {
-                            Log.i(TAG, "configure border router successfully");
-                        }
+            getOtDaemon()
+                    .configureBorderRouter(
+                            mBorderRouterConfig, new ConfigureBorderRouterStatusReceiver());
+        } catch (RemoteException | IOException | ThreadNetworkException e) {
+            Log.w(TAG, "Failed to enable border routing", e);
+        }
+    }
 
-                        @Override
-                        public void onError(int i, String s) {
-                            Log.w(
-                                    TAG,
-                                    String.format(
-                                            "failed to configure border router: %d %s", i, s));
-                        }
-                    });
-        } catch (Exception e) {
-            Log.w(TAG, "enableBorderRouting failed: " + e);
+    private void disableBorderRouting() {
+        mUpstreamNetwork = null;
+        mBorderRouterConfig.infraInterfaceName = null;
+        mBorderRouterConfig.infraInterfaceIcmp6Socket = null;
+        mBorderRouterConfig.isBorderRoutingEnabled = false;
+        try {
+            getOtDaemon()
+                    .configureBorderRouter(
+                            mBorderRouterConfig, new ConfigureBorderRouterStatusReceiver());
+        } catch (RemoteException | ThreadNetworkException e) {
+            Log.w(TAG, "Failed to disable border routing", e);
         }
     }
 
@@ -981,20 +1328,22 @@
         }
     }
 
-    private void handleAddressChanged(Ipv6AddressInfo addressInfo, boolean isAdded) {
+    private void handleAddressChanged(List<Ipv6AddressInfo> addressInfoList) {
         checkOnHandlerThread();
-        InetAddress address = addressInfoToInetAddress(addressInfo);
-        if (address.isMulticastAddress()) {
-            Log.i(TAG, "Ignoring multicast address " + address.getHostAddress());
-            return;
-        }
 
-        LinkAddress linkAddress = newLinkAddress(addressInfo);
-        if (isAdded) {
-            mTunIfController.addAddress(linkAddress);
-        } else {
-            mTunIfController.removeAddress(linkAddress);
+        mTunIfController.updateAddresses(addressInfoList);
+
+        // The OT daemon can send link property updates before the networkAgent is
+        // registered
+        if (mNetworkAgent != null) {
+            mNetworkAgent.sendLinkProperties(mTunIfController.getLinkProperties());
         }
+    }
+
+    private void handlePrefixChanged(List<OnMeshPrefixConfig> onMeshPrefixConfigList) {
+        checkOnHandlerThread();
+
+        mTunIfController.updatePrefixes(onMeshPrefixConfigList);
 
         // The OT daemon can send link property updates before the networkAgent is
         // registered
@@ -1073,6 +1422,20 @@
         }
     }
 
+    private static final class ConfigureBorderRouterStatusReceiver extends IOtStatusReceiver.Stub {
+        public ConfigureBorderRouterStatusReceiver() {}
+
+        @Override
+        public void onSuccess() {
+            Log.i(TAG, "Configured border router successfully");
+        }
+
+        @Override
+        public void onError(int i, String s) {
+            Log.w(TAG, String.format("Failed to configure border router: %d %s", i, s));
+        }
+    }
+
     /**
      * Handles and forwards Thread daemon callbacks. This class must be accessed from the thread of
      * {@code mHandler}.
@@ -1105,17 +1468,8 @@
 
             try {
                 getOtDaemon().registerStateCallback(this, callbackMetadata.id);
-            } catch (RemoteException e) {
-                // oneway operation should never fail
-            }
-        }
-
-        private void notifyThreadEnabledUpdated(IStateCallback callback, int enabledState) {
-            try {
-                callback.onThreadEnableStateChanged(enabledState);
-                Log.i(TAG, "onThreadEnableStateChanged " + enabledState);
-            } catch (RemoteException ignored) {
-                // do nothing if the client is dead
+            } catch (RemoteException | ThreadNetworkException e) {
+                Log.e(TAG, "otDaemon.registerStateCallback failed", e);
             }
         }
 
@@ -1146,8 +1500,8 @@
 
             try {
                 getOtDaemon().registerStateCallback(this, callbackMetadata.id);
-            } catch (RemoteException e) {
-                // oneway operation should never fail
+            } catch (RemoteException | ThreadNetworkException e) {
+                Log.e(TAG, "otDaemon.registerStateCallback failed", e);
             }
         }
 
@@ -1166,8 +1520,11 @@
                 return;
             }
 
+            final int deviceRole = mState.deviceRole;
+            mState = null;
+
             // If this device is already STOPPED or DETACHED, do nothing
-            if (!ThreadNetworkController.isAttached(mState.deviceRole)) {
+            if (!ThreadNetworkController.isAttached(deviceRole)) {
                 return;
             }
 
@@ -1182,15 +1539,19 @@
             }
         }
 
-        @Override
-        public void onThreadEnabledChanged(int state) {
-            mHandler.post(() -> onThreadEnabledChangedInternal(state));
-        }
-
-        private void onThreadEnabledChangedInternal(int state) {
+        private void onThreadEnabledChanged(int state, long listenerId) {
             checkOnHandlerThread();
-            for (IStateCallback callback : mStateCallbacks.keySet()) {
-                notifyThreadEnabledUpdated(callback, otStateToAndroidState(state));
+            boolean stateChanged = (mState == null || mState.threadEnabled != state);
+
+            for (var callbackEntry : mStateCallbacks.entrySet()) {
+                if (!stateChanged && callbackEntry.getValue().id != listenerId) {
+                    continue;
+                }
+                try {
+                    callbackEntry.getKey().onThreadEnableStateChanged(otStateToAndroidState(state));
+                } catch (RemoteException ignored) {
+                    // do nothing if the client is dead
+                }
             }
         }
 
@@ -1217,6 +1578,7 @@
             onInterfaceStateChanged(newState.isInterfaceUp);
             onDeviceRoleChanged(newState.deviceRole, listenerId);
             onPartitionIdChanged(newState.partitionId, listenerId);
+            onThreadEnabledChanged(newState.threadEnabled, listenerId);
             mState = newState;
 
             ActiveOperationalDataset newActiveDataset;
@@ -1326,13 +1688,18 @@
         }
 
         @Override
-        public void onAddressChanged(Ipv6AddressInfo addressInfo, boolean isAdded) {
-            mHandler.post(() -> handleAddressChanged(addressInfo, isAdded));
+        public void onAddressChanged(List<Ipv6AddressInfo> addressInfoList) {
+            mHandler.post(() -> handleAddressChanged(addressInfoList));
         }
 
         @Override
         public void onBackboneRouterStateChanged(BackboneRouterState state) {
             mHandler.post(() -> handleMulticastForwardingChanged(state));
         }
+
+        @Override
+        public void onPrefixChanged(List<OnMeshPrefixConfig> onMeshPrefixConfigList) {
+            mHandler.post(() -> handlePrefixChanged(onMeshPrefixConfigList));
+        }
     }
 }
diff --git a/thread/service/java/com/android/server/thread/ThreadNetworkCountryCode.java b/thread/service/java/com/android/server/thread/ThreadNetworkCountryCode.java
index ffa7b44..a194114 100644
--- a/thread/service/java/com/android/server/thread/ThreadNetworkCountryCode.java
+++ b/thread/service/java/com/android/server/thread/ThreadNetworkCountryCode.java
@@ -16,6 +16,8 @@
 
 package com.android.server.thread;
 
+import static com.android.server.thread.ThreadPersistentSettings.THREAD_COUNTRY_CODE;
+
 import android.annotation.Nullable;
 import android.annotation.StringDef;
 import android.annotation.TargetApi;
@@ -83,6 +85,7 @@
                 COUNTRY_CODE_SOURCE_TELEPHONY,
                 COUNTRY_CODE_SOURCE_TELEPHONY_LAST,
                 COUNTRY_CODE_SOURCE_WIFI,
+                COUNTRY_CODE_SOURCE_SETTINGS,
             })
     private @interface CountryCodeSource {}
 
@@ -93,6 +96,7 @@
     private static final String COUNTRY_CODE_SOURCE_TELEPHONY = "Telephony";
     private static final String COUNTRY_CODE_SOURCE_TELEPHONY_LAST = "TelephonyLast";
     private static final String COUNTRY_CODE_SOURCE_WIFI = "Wifi";
+    private static final String COUNTRY_CODE_SOURCE_SETTINGS = "Settings";
 
     private static final CountryCodeInfo DEFAULT_COUNTRY_CODE_INFO =
             new CountryCodeInfo(DEFAULT_COUNTRY_CODE, COUNTRY_CODE_SOURCE_DEFAULT);
@@ -107,6 +111,7 @@
     private final SubscriptionManager mSubscriptionManager;
     private final Map<Integer, TelephonyCountryCodeSlotInfo> mTelephonyCountryCodeSlotInfoMap =
             new ArrayMap();
+    private final ThreadPersistentSettings mPersistentSettings;
 
     @Nullable private CountryCodeInfo mCurrentCountryCodeInfo;
     @Nullable private CountryCodeInfo mLocationCountryCodeInfo;
@@ -215,7 +220,8 @@
             Context context,
             TelephonyManager telephonyManager,
             SubscriptionManager subscriptionManager,
-            @Nullable String oemCountryCode) {
+            @Nullable String oemCountryCode,
+            ThreadPersistentSettings persistentSettings) {
         mLocationManager = locationManager;
         mThreadNetworkControllerService = threadNetworkControllerService;
         mGeocoder = geocoder;
@@ -224,14 +230,19 @@
         mContext = context;
         mTelephonyManager = telephonyManager;
         mSubscriptionManager = subscriptionManager;
+        mPersistentSettings = persistentSettings;
 
         if (oemCountryCode != null) {
             mOemCountryCodeInfo = new CountryCodeInfo(oemCountryCode, COUNTRY_CODE_SOURCE_OEM);
         }
+
+        mCurrentCountryCodeInfo = pickCountryCode();
     }
 
     public static ThreadNetworkCountryCode newInstance(
-            Context context, ThreadNetworkControllerService controllerService) {
+            Context context,
+            ThreadNetworkControllerService controllerService,
+            ThreadPersistentSettings persistentSettings) {
         return new ThreadNetworkCountryCode(
                 context.getSystemService(LocationManager.class),
                 controllerService,
@@ -241,7 +252,8 @@
                 context,
                 context.getSystemService(TelephonyManager.class),
                 context.getSystemService(SubscriptionManager.class),
-                ThreadNetworkProperties.country_code().orElse(null));
+                ThreadNetworkProperties.country_code().orElse(null),
+                persistentSettings);
     }
 
     /** Sets up this country code module to listen to location country code changes. */
@@ -485,6 +497,11 @@
             return mLocationCountryCodeInfo;
         }
 
+        String settingsCountryCode = mPersistentSettings.get(THREAD_COUNTRY_CODE);
+        if (settingsCountryCode != null) {
+            return new CountryCodeInfo(settingsCountryCode, COUNTRY_CODE_SOURCE_SETTINGS);
+        }
+
         if (mOemCountryCodeInfo != null) {
             return mOemCountryCodeInfo;
         }
@@ -498,6 +515,8 @@
             public void onSuccess() {
                 synchronized ("ThreadNetworkCountryCode.this") {
                     mCurrentCountryCodeInfo = countryCodeInfo;
+                    mPersistentSettings.put(
+                            THREAD_COUNTRY_CODE.key, countryCodeInfo.getCountryCode());
                 }
             }
 
@@ -536,10 +555,9 @@
                 newOperationReceiver(countryCodeInfo));
     }
 
-    /** Returns the current country code or {@code null} if no country code is set. */
-    @Nullable
+    /** Returns the current country code. */
     public synchronized String getCountryCode() {
-        return (mCurrentCountryCodeInfo != null) ? mCurrentCountryCodeInfo.getCountryCode() : null;
+        return mCurrentCountryCodeInfo.getCountryCode();
     }
 
     /**
diff --git a/thread/service/java/com/android/server/thread/ThreadNetworkService.java b/thread/service/java/com/android/server/thread/ThreadNetworkService.java
index 5664922..4c22278 100644
--- a/thread/service/java/com/android/server/thread/ThreadNetworkService.java
+++ b/thread/service/java/com/android/server/thread/ThreadNetworkService.java
@@ -18,6 +18,8 @@
 
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 
+import static java.util.Objects.requireNonNull;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.Context;
@@ -58,15 +60,22 @@
         if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) {
             mPersistentSettings.initialize();
             mControllerService =
-                    ThreadNetworkControllerService.newInstance(mContext, mPersistentSettings);
+                    ThreadNetworkControllerService.newInstance(
+                            mContext, mPersistentSettings, () -> mCountryCode.getCountryCode());
+            mCountryCode =
+                    ThreadNetworkCountryCode.newInstance(
+                            mContext, mControllerService, mPersistentSettings);
             mControllerService.initialize();
         } else if (phase == SystemService.PHASE_BOOT_COMPLETED) {
             // Country code initialization is delayed to the BOOT_COMPLETED phase because it will
             // call into Wi-Fi and Telephony service whose country code module is ready after
             // PHASE_ACTIVITY_MANAGER_READY and PHASE_THIRD_PARTY_APPS_CAN_START
-            mCountryCode = ThreadNetworkCountryCode.newInstance(mContext, mControllerService);
             mCountryCode.initialize();
-            mShellCommand = new ThreadNetworkShellCommand(mCountryCode);
+            mShellCommand =
+                    new ThreadNetworkShellCommand(
+                            mContext,
+                            requireNonNull(mControllerService),
+                            requireNonNull(mCountryCode));
         }
     }
 
diff --git a/thread/service/java/com/android/server/thread/ThreadNetworkShellCommand.java b/thread/service/java/com/android/server/thread/ThreadNetworkShellCommand.java
index c17c5a7..54155ee 100644
--- a/thread/service/java/com/android/server/thread/ThreadNetworkShellCommand.java
+++ b/thread/service/java/com/android/server/thread/ThreadNetworkShellCommand.java
@@ -17,36 +17,57 @@
 package com.android.server.thread;
 
 import android.annotation.Nullable;
-import android.os.Binder;
-import android.os.Process;
+import android.content.Context;
+import android.net.thread.ActiveOperationalDataset;
+import android.net.thread.IOperationReceiver;
+import android.net.thread.OperationalDatasetTimestamp;
+import android.net.thread.PendingOperationalDataset;
+import android.net.thread.ThreadNetworkException;
 import android.text.TextUtils;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.modules.utils.BasicShellCommandHandler;
+import com.android.net.module.util.HexDump;
 
 import java.io.PrintWriter;
-import java.util.List;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 
 /**
- * Interprets and executes 'adb shell cmd thread_network [args]'.
+ * Interprets and executes 'adb shell cmd thread_network <subcommand>'.
+ *
+ * <p>Subcommands which don't have an equivalent Java API now require the
+ * "android.permission.THREAD_NETWORK_TESTING" permission. For a specific subcommand, it also
+ * requires the same permissions of the equivalent Java / AIDL API.
  *
  * <p>To add new commands: - onCommand: Add a case "<command>" execute. Return a 0 if command
  * executed successfully. - onHelp: add a description string.
- *
- * <p>Permissions: currently root permission is required for some commands. Others will enforce the
- * corresponding API permissions.
  */
-public class ThreadNetworkShellCommand extends BasicShellCommandHandler {
-    private static final String TAG = "ThreadNetworkShellCommand";
+public final class ThreadNetworkShellCommand extends BasicShellCommandHandler {
+    private static final Duration SET_ENABLED_TIMEOUT = Duration.ofSeconds(2);
+    private static final Duration LEAVE_TIMEOUT = Duration.ofSeconds(2);
+    private static final Duration MIGRATE_TIMEOUT = Duration.ofSeconds(2);
+    private static final Duration FORCE_STOP_TIMEOUT = Duration.ofSeconds(1);
+    private static final String PERMISSION_THREAD_NETWORK_TESTING =
+            "android.permission.THREAD_NETWORK_TESTING";
 
-    // These don't require root access.
-    private static final List<String> NON_PRIVILEGED_COMMANDS = List.of("help", "get-country-code");
+    private final Context mContext;
+    private final ThreadNetworkControllerService mControllerService;
+    private final ThreadNetworkCountryCode mCountryCode;
 
-    @Nullable private final ThreadNetworkCountryCode mCountryCode;
     @Nullable private PrintWriter mOutputWriter;
     @Nullable private PrintWriter mErrorWriter;
 
-    ThreadNetworkShellCommand(@Nullable ThreadNetworkCountryCode countryCode) {
+    public ThreadNetworkShellCommand(
+            Context context,
+            ThreadNetworkControllerService controllerService,
+            ThreadNetworkCountryCode countryCode) {
+        mContext = context;
+        mControllerService = controllerService;
         mCountryCode = countryCode;
     }
 
@@ -65,77 +86,205 @@
     }
 
     @Override
+    public void onHelp() {
+        final PrintWriter pw = getOutputWriter();
+        pw.println("Thread network commands:");
+        pw.println("  help or -h");
+        pw.println("    Print this help text.");
+        pw.println("  enable");
+        pw.println("    Enables Thread radio");
+        pw.println("  disable");
+        pw.println("    Disables Thread radio");
+        pw.println("  join <active-dataset-tlvs>");
+        pw.println("    Joins a network of the given dataset");
+        pw.println("  migrate <active-dataset-tlvs> <delay-seconds>");
+        pw.println("    Migrate to the given network by a specific delay");
+        pw.println("  leave");
+        pw.println("    Leave the current network and erase datasets");
+        pw.println("  force-stop-ot-daemon enabled | disabled ");
+        pw.println("    force stop ot-daemon service");
+        pw.println("  get-country-code");
+        pw.println("    Gets country code as a two-letter string");
+        pw.println("  force-country-code enabled <two-letter code> | disabled ");
+        pw.println("    Sets country code to <two-letter code> or left for normal value");
+    }
+
+    @Override
     public int onCommand(String cmd) {
-        // Treat no command as help command.
+        // Treat no command as the "help" command
         if (TextUtils.isEmpty(cmd)) {
             cmd = "help";
         }
 
-        final PrintWriter pw = getOutputWriter();
-        final PrintWriter perr = getErrorWriter();
-
-        // Explicit exclusion from root permission
-        if (!NON_PRIVILEGED_COMMANDS.contains(cmd)) {
-            final int uid = Binder.getCallingUid();
-
-            if (uid != Process.ROOT_UID) {
-                perr.println(
-                        "Uid "
-                                + uid
-                                + " does not have access to "
-                                + cmd
-                                + " thread command "
-                                + "(or such command doesn't exist)");
-                return -1;
-            }
-        }
-
         switch (cmd) {
+            case "enable":
+                return setThreadEnabled(true);
+            case "disable":
+                return setThreadEnabled(false);
+            case "join":
+                return join();
+            case "leave":
+                return leave();
+            case "migrate":
+                return migrate();
+            case "force-stop-ot-daemon":
+                return forceStopOtDaemon();
             case "force-country-code":
-                boolean enabled;
-
-                if (mCountryCode == null) {
-                    perr.println("Thread country code operations are not supported");
-                    return -1;
-                }
-
-                try {
-                    enabled = getNextArgRequiredTrueOrFalse("enabled", "disabled");
-                } catch (IllegalArgumentException e) {
-                    perr.println("Invalid argument: " + e.getMessage());
-                    return -1;
-                }
-
-                if (enabled) {
-                    String countryCode = getNextArgRequired();
-                    if (!ThreadNetworkCountryCode.isValidCountryCode(countryCode)) {
-                        perr.println(
-                                "Invalid argument: Country code must be a 2-Character"
-                                        + " string. But got country code "
-                                        + countryCode
-                                        + " instead");
-                        return -1;
-                    }
-                    mCountryCode.setOverrideCountryCode(countryCode);
-                    pw.println("Set Thread country code: " + countryCode);
-
-                } else {
-                    mCountryCode.clearOverrideCountryCode();
-                }
-                return 0;
+                return forceCountryCode();
             case "get-country-code":
-                if (mCountryCode == null) {
-                    perr.println("Thread country code operations are not supported");
-                    return -1;
-                }
-
-                pw.println("Thread country code = " + mCountryCode.getCountryCode());
-                return 0;
+                return getCountryCode();
             default:
                 return handleDefaultCommands(cmd);
         }
     }
 
+    private void ensureTestingPermission() {
+        mContext.enforceCallingOrSelfPermission(
+                PERMISSION_THREAD_NETWORK_TESTING,
+                "Permission " + PERMISSION_THREAD_NETWORK_TESTING + " is missing!");
+    }
+
+    private int setThreadEnabled(boolean enabled) {
+        CompletableFuture<Void> setEnabledFuture = new CompletableFuture<>();
+        mControllerService.setEnabled(enabled, newOperationReceiver(setEnabledFuture));
+        return waitForFuture(setEnabledFuture, SET_ENABLED_TIMEOUT, getErrorWriter());
+    }
+
+    private int join() {
+        byte[] datasetTlvs = HexDump.hexStringToByteArray(getNextArgRequired());
+        ActiveOperationalDataset dataset;
+        try {
+            dataset = ActiveOperationalDataset.fromThreadTlvs(datasetTlvs);
+        } catch (IllegalArgumentException e) {
+            getErrorWriter().println("Invalid dataset argument: " + e.getMessage());
+            return -1;
+        }
+        // Do not wait for join to complete because this can take 8 to 30 seconds
+        mControllerService.join(dataset, new IOperationReceiver.Default());
+        return 0;
+    }
+
+    private int leave() {
+        CompletableFuture<Void> leaveFuture = new CompletableFuture<>();
+        mControllerService.leave(newOperationReceiver(leaveFuture));
+        return waitForFuture(leaveFuture, LEAVE_TIMEOUT, getErrorWriter());
+    }
+
+    private int migrate() {
+        byte[] datasetTlvs = HexDump.hexStringToByteArray(getNextArgRequired());
+        ActiveOperationalDataset dataset;
+        try {
+            dataset = ActiveOperationalDataset.fromThreadTlvs(datasetTlvs);
+        } catch (IllegalArgumentException e) {
+            getErrorWriter().println("Invalid dataset argument: " + e.getMessage());
+            return -1;
+        }
+
+        int delaySeconds;
+        try {
+            delaySeconds = Integer.parseInt(getNextArgRequired());
+        } catch (NumberFormatException e) {
+            getErrorWriter().println("Invalid delay argument: " + e.getMessage());
+            return -1;
+        }
+
+        PendingOperationalDataset pendingDataset =
+                new PendingOperationalDataset(
+                        dataset,
+                        OperationalDatasetTimestamp.fromInstant(Instant.now()),
+                        Duration.ofSeconds(delaySeconds));
+        CompletableFuture<Void> migrateFuture = new CompletableFuture<>();
+        mControllerService.scheduleMigration(pendingDataset, newOperationReceiver(migrateFuture));
+        return waitForFuture(migrateFuture, MIGRATE_TIMEOUT, getErrorWriter());
+    }
+
+    private int forceStopOtDaemon() {
+        ensureTestingPermission();
+        final PrintWriter errorWriter = getErrorWriter();
+        boolean enabled;
+        try {
+            enabled = getNextArgRequiredTrueOrFalse("enabled", "disabled");
+        } catch (IllegalArgumentException e) {
+            errorWriter.println("Invalid argument: " + e.getMessage());
+            return -1;
+        }
+
+        CompletableFuture<Void> forceStopFuture = new CompletableFuture<>();
+        mControllerService.forceStopOtDaemonForTest(enabled, newOperationReceiver(forceStopFuture));
+        return waitForFuture(forceStopFuture, FORCE_STOP_TIMEOUT, getErrorWriter());
+    }
+
+    private int forceCountryCode() {
+        ensureTestingPermission();
+        final PrintWriter perr = getErrorWriter();
+        boolean enabled;
+        try {
+            enabled = getNextArgRequiredTrueOrFalse("enabled", "disabled");
+        } catch (IllegalArgumentException e) {
+            perr.println("Invalid argument: " + e.getMessage());
+            return -1;
+        }
+
+        if (enabled) {
+            String countryCode = getNextArgRequired();
+            if (!ThreadNetworkCountryCode.isValidCountryCode(countryCode)) {
+                perr.println(
+                        "Invalid argument: Country code must be a 2-letter"
+                                + " string. But got country code "
+                                + countryCode
+                                + " instead");
+                return -1;
+            }
+            mCountryCode.setOverrideCountryCode(countryCode);
+        } else {
+            mCountryCode.clearOverrideCountryCode();
+        }
+        return 0;
+    }
+
+    private int getCountryCode() {
+        ensureTestingPermission();
+        getOutputWriter().println("Thread country code = " + mCountryCode.getCountryCode());
+        return 0;
+    }
+
+    private static IOperationReceiver newOperationReceiver(CompletableFuture<Void> future) {
+        return new IOperationReceiver.Stub() {
+            @Override
+            public void onSuccess() {
+                future.complete(null);
+            }
+
+            @Override
+            public void onError(int errorCode, String errorMessage) {
+                future.completeExceptionally(new ThreadNetworkException(errorCode, errorMessage));
+            }
+        };
+    }
+
+    /**
+     * Waits for the future to complete within given timeout.
+     *
+     * <p>Returns 0 if {@code future} completed successfully, or -1 if {@code future} failed to
+     * complete. When failed, error messages are printed to {@code errorWriter}.
+     */
+    private int waitForFuture(
+            CompletableFuture<Void> future, Duration timeout, PrintWriter errorWriter) {
+        try {
+            future.get(timeout.toSeconds(), TimeUnit.SECONDS);
+            return 0;
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            errorWriter.println("Failed: " + e.getMessage());
+        } catch (ExecutionException e) {
+            errorWriter.println("Failed: " + e.getCause().getMessage());
+        } catch (TimeoutException e) {
+            errorWriter.println("Failed: command timeout for " + timeout);
+        }
+
+        return -1;
+    }
+
     private static boolean argTrueOrFalse(String arg, String trueString, String falseString) {
         if (trueString.equals(arg)) {
             return true;
@@ -157,27 +306,4 @@
         String nextArg = getNextArgRequired();
         return argTrueOrFalse(nextArg, trueString, falseString);
     }
-
-    private void onHelpNonPrivileged(PrintWriter pw) {
-        pw.println("  get-country-code");
-        pw.println("    Gets country code as a two-letter string");
-    }
-
-    private void onHelpPrivileged(PrintWriter pw) {
-        pw.println("  force-country-code enabled <two-letter code> | disabled ");
-        pw.println("    Sets country code to <two-letter code> or left for normal value");
-    }
-
-    @Override
-    public void onHelp() {
-        final PrintWriter pw = getOutputWriter();
-        pw.println("Thread network commands:");
-        pw.println("  help or -h");
-        pw.println("    Print this help text.");
-        onHelpNonPrivileged(pw);
-        if (Binder.getCallingUid() == Process.ROOT_UID) {
-            onHelpPrivileged(pw);
-        }
-        pw.println();
-    }
 }
diff --git a/thread/service/java/com/android/server/thread/ThreadPersistentSettings.java b/thread/service/java/com/android/server/thread/ThreadPersistentSettings.java
index aba4193..747cc96 100644
--- a/thread/service/java/com/android/server/thread/ThreadPersistentSettings.java
+++ b/thread/service/java/com/android/server/thread/ThreadPersistentSettings.java
@@ -18,9 +18,11 @@
 
 import static com.android.net.module.util.DeviceConfigUtils.TETHERING_MODULE_NAME;
 
+import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.content.ApexEnvironment;
 import android.content.Context;
+import android.net.thread.ThreadConfiguration;
 import android.os.PersistableBundle;
 import android.util.AtomicFile;
 import android.util.Log;
@@ -46,10 +48,13 @@
  */
 public class ThreadPersistentSettings {
     private static final String TAG = "ThreadPersistentSettings";
+
     /** File name used for storing settings. */
     private static final String FILE_NAME = "ThreadPersistentSettings.xml";
+
     /** Current config store data version. This will be incremented for any additions. */
     private static final int CURRENT_SETTINGS_STORE_DATA_VERSION = 1;
+
     /**
      * Stores the version of the data. This can be used to handle migration of data if some
      * non-backward compatible change introduced.
@@ -58,7 +63,28 @@
 
     /******** Thread persistent setting keys ***************/
     /** Stores the Thread feature toggle state, true for enabled and false for disabled. */
-    public static final Key<Boolean> THREAD_ENABLED = new Key<>("Thread_enabled", true);
+    public static final Key<Boolean> THREAD_ENABLED = new Key<>("thread_enabled", true);
+
+    /**
+     * Indicates that Thread was enabled (i.e. via the setEnabled() API) when the airplane mode is
+     * turned on in settings. When this value is {@code true}, the current airplane mode state will
+     * be ignored when evaluating the Thread enabled state.
+     */
+    public static final Key<Boolean> THREAD_ENABLED_IN_AIRPLANE_MODE =
+            new Key<>("thread_enabled_in_airplane_mode", false);
+
+    /** Stores the Thread country code, null if no country code is stored. */
+    public static final Key<String> THREAD_COUNTRY_CODE = new Key<>("thread_country_code", null);
+
+    /** Stores the Thread NAT64 feature toggle state, true for enabled and false for disabled. */
+    private static final Key<Boolean> CONFIG_NAT64_ENABLED =
+            new Key<>("config_nat64_enabled", false);
+
+    /**
+     * Stores the Thread DHCPv6-PD feature toggle state, true for enabled and false for disabled.
+     */
+    private static final Key<Boolean> CONFIG_DHCP6_PD_ENABLED =
+            new Key<>("config_dhcp6_pd_enabled", false);
 
     /******** Thread persistent setting keys ***************/
 
@@ -120,7 +146,9 @@
     private <T> T getObject(String key, T defaultValue) {
         Object value;
         synchronized (mLock) {
-            if (defaultValue instanceof Boolean) {
+            if (defaultValue == null) {
+                value = mSettings.getString(key, null);
+            } else if (defaultValue instanceof Boolean) {
                 value = mSettings.getBoolean(key, (Boolean) defaultValue);
             } else if (defaultValue instanceof Integer) {
                 value = mSettings.getInt(key, (Integer) defaultValue);
@@ -159,6 +187,30 @@
     }
 
     /**
+     * Store a {@link ThreadConfiguration} to the persistent settings.
+     *
+     * @param configuration {@link ThreadConfiguration} to be stored.
+     * @return {@code true} if the configuration was changed, {@code false} otherwise.
+     */
+    public boolean putConfiguration(@NonNull ThreadConfiguration configuration) {
+        if (getConfiguration().equals(configuration)) {
+            return false;
+        }
+        putObject(CONFIG_NAT64_ENABLED.key, configuration.isNat64Enabled());
+        putObject(CONFIG_DHCP6_PD_ENABLED.key, configuration.isDhcp6PdEnabled());
+        writeToStoreFile();
+        return true;
+    }
+
+    /** Retrieve the {@link ThreadConfiguration} from the persistent settings. */
+    public ThreadConfiguration getConfiguration() {
+        return new ThreadConfiguration.Builder()
+                .setNat64Enabled(get(CONFIG_NAT64_ENABLED))
+                .setDhcp6PdEnabled(get(CONFIG_DHCP6_PD_ENABLED))
+                .build();
+    }
+
+    /**
      * Base class to store string key and its default value.
      *
      * @param <T> Type of the value.
@@ -210,7 +262,7 @@
                 mSettings.putAll(bundleRead);
             }
         } catch (FileNotFoundException e) {
-            Log.e(TAG, "No store file to read", e);
+            Log.w(TAG, "No store file to read", e);
         } catch (IOException e) {
             Log.e(TAG, "Read from store file failed", e);
         }
diff --git a/thread/service/java/com/android/server/thread/TunInterfaceController.java b/thread/service/java/com/android/server/thread/TunInterfaceController.java
index b29a54f..976f93d 100644
--- a/thread/service/java/com/android/server/thread/TunInterfaceController.java
+++ b/thread/service/java/com/android/server/thread/TunInterfaceController.java
@@ -16,29 +16,56 @@
 
 package com.android.server.thread;
 
+import static android.system.OsConstants.AF_INET6;
+import static android.system.OsConstants.EADDRINUSE;
+import static android.system.OsConstants.IFF_MULTICAST;
+import static android.system.OsConstants.IFF_NOARP;
+import static android.system.OsConstants.NETLINK_ROUTE;
+
+import static com.android.net.module.util.netlink.NetlinkConstants.RTM_NEWLINK;
+import static com.android.net.module.util.netlink.RtNetlinkLinkMessage.IFLA_AF_SPEC;
+import static com.android.net.module.util.netlink.RtNetlinkLinkMessage.IFLA_INET6_ADDR_GEN_MODE;
+import static com.android.net.module.util.netlink.RtNetlinkLinkMessage.IN6_ADDR_GEN_MODE_NONE;
+import static com.android.net.module.util.netlink.StructNlMsgHdr.NLM_F_ACK;
+import static com.android.net.module.util.netlink.StructNlMsgHdr.NLM_F_REQUEST;
+
 import android.annotation.Nullable;
 import android.net.IpPrefix;
 import android.net.LinkAddress;
 import android.net.LinkProperties;
 import android.net.RouteInfo;
-import android.net.util.SocketUtils;
 import android.os.ParcelFileDescriptor;
 import android.os.SystemClock;
 import android.system.ErrnoException;
 import android.system.Os;
-import android.system.OsConstants;
 import android.util.Log;
 
+import com.android.net.module.util.HexDump;
+import com.android.net.module.util.LinkPropertiesUtils.CompareResult;
 import com.android.net.module.util.netlink.NetlinkUtils;
-import com.android.net.module.util.netlink.RtNetlinkAddressMessage;
+import com.android.net.module.util.netlink.StructIfinfoMsg;
+import com.android.net.module.util.netlink.StructNlAttr;
+import com.android.net.module.util.netlink.StructNlMsgHdr;
+import com.android.server.thread.openthread.Ipv6AddressInfo;
+import com.android.server.thread.openthread.OnMeshPrefixConfig;
 
-import java.io.FileDescriptor;
 import java.io.IOException;
-import java.io.InterruptedIOException;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.MulticastSocket;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.ArrayList;
+import java.util.List;
 
 /** Controller for virtual/tunnel network interfaces. */
 public class TunInterfaceController {
     private static final String TAG = "TunIfController";
+    private static final boolean DBG = false;
     private static final long INFINITE_LIFETIME = 0xffffffffL;
     static final int MTU = 1280;
 
@@ -48,15 +75,19 @@
 
     private final String mIfName;
     private final LinkProperties mLinkProperties = new LinkProperties();
+    private final MulticastSocket mMulticastSocket; // For join group and leave group
+    private final List<InetAddress> mMulticastAddresses = new ArrayList<>();
+    private final List<RouteInfo> mNetDataPrefixes = new ArrayList<>();
+
     private ParcelFileDescriptor mParcelTunFd;
-    private FileDescriptor mNetlinkSocket;
-    private static int sNetlinkSeqNo = 0;
+    private NetworkInterface mNetworkInterface;
 
     /** Creates a new {@link TunInterfaceController} instance for given interface. */
     public TunInterfaceController(String interfaceName) {
         mIfName = interfaceName;
         mLinkProperties.setInterfaceName(mIfName);
         mLinkProperties.setMtu(MTU);
+        mMulticastSocket = createMulticastSocket();
     }
 
     /** Returns link properties of the Thread TUN interface. */
@@ -72,21 +103,22 @@
     public void createTunInterface() throws IOException {
         mParcelTunFd = ParcelFileDescriptor.adoptFd(nativeCreateTunInterface(mIfName, MTU));
         try {
-            mNetlinkSocket = NetlinkUtils.netlinkSocketForProto(OsConstants.NETLINK_ROUTE);
-        } catch (ErrnoException e) {
-            throw new IOException("Failed to create netlink socket", e);
+            mNetworkInterface = NetworkInterface.getByName(mIfName);
+        } catch (SocketException e) {
+            throw new IOException("Failed to get NetworkInterface", e);
         }
+
+        setAddrGenModeToNone();
     }
 
     public void destroyTunInterface() {
         try {
             mParcelTunFd.close();
-            SocketUtils.closeSocket(mNetlinkSocket);
         } catch (IOException e) {
             // Should never fail
         }
         mParcelTunFd = null;
-        mNetlinkSocket = null;
+        mNetworkInterface = null;
     }
 
     /** Returns the FD of the tunnel interface. */
@@ -103,6 +135,10 @@
             for (LinkAddress address : mLinkProperties.getAllLinkAddresses()) {
                 removeAddress(address);
             }
+            for (RouteInfo route : mLinkProperties.getAllRoutes()) {
+                mLinkProperties.removeRoute(route);
+            }
+            mNetDataPrefixes.clear();
         }
         nativeSetInterfaceUp(mIfName, isUp);
     }
@@ -113,14 +149,14 @@
     public void addAddress(LinkAddress address) {
         Log.d(TAG, "Adding address " + address + " with flags: " + address.getFlags());
 
-        long validLifetimeSeconds;
         long preferredLifetimeSeconds;
+        long validLifetimeSeconds;
 
         if (address.getDeprecationTime() == LinkAddress.LIFETIME_PERMANENT
                 || address.getDeprecationTime() == LinkAddress.LIFETIME_UNKNOWN) {
-            validLifetimeSeconds = INFINITE_LIFETIME;
+            preferredLifetimeSeconds = INFINITE_LIFETIME;
         } else {
-            validLifetimeSeconds =
+            preferredLifetimeSeconds =
                     Math.max(
                             (address.getDeprecationTime() - SystemClock.elapsedRealtime()) / 1000L,
                             0L);
@@ -128,28 +164,23 @@
 
         if (address.getExpirationTime() == LinkAddress.LIFETIME_PERMANENT
                 || address.getExpirationTime() == LinkAddress.LIFETIME_UNKNOWN) {
-            preferredLifetimeSeconds = INFINITE_LIFETIME;
+            validLifetimeSeconds = INFINITE_LIFETIME;
         } else {
-            preferredLifetimeSeconds =
+            validLifetimeSeconds =
                     Math.max(
                             (address.getExpirationTime() - SystemClock.elapsedRealtime()) / 1000L,
                             0L);
         }
 
-        byte[] message =
-                RtNetlinkAddressMessage.newRtmNewAddressMessage(
-                        sNetlinkSeqNo++,
-                        address.getAddress(),
-                        (short) address.getPrefixLength(),
-                        address.getFlags(),
-                        (byte) address.getScope(),
-                        Os.if_nametoindex(mIfName),
-                        validLifetimeSeconds,
-                        preferredLifetimeSeconds);
-        try {
-            Os.write(mNetlinkSocket, message, 0, message.length);
-        } catch (ErrnoException | InterruptedIOException e) {
-            Log.e(TAG, "Failed to add address " + address, e);
+        if (!NetlinkUtils.sendRtmNewAddressRequest(
+                Os.if_nametoindex(mIfName),
+                address.getAddress(),
+                (short) address.getPrefixLength(),
+                address.getFlags(),
+                (byte) address.getScope(),
+                preferredLifetimeSeconds,
+                validLifetimeSeconds)) {
+            Log.w(TAG, "Failed to add address " + address.getAddress().getHostAddress());
             return;
         }
         mLinkProperties.addLinkAddress(address);
@@ -159,32 +190,96 @@
     /** Removes an address from the interface. */
     public void removeAddress(LinkAddress address) {
         Log.d(TAG, "Removing address " + address);
-        byte[] message =
-                RtNetlinkAddressMessage.newRtmDelAddressMessage(
-                        sNetlinkSeqNo++,
-                        address.getAddress(),
-                        (short) address.getPrefixLength(),
-                        Os.if_nametoindex(mIfName));
 
         // Intentionally update the mLinkProperties before send netlink message because the
         // address is already removed from ot-daemon and apps can't reach to the address even
         // when the netlink request below fails
         mLinkProperties.removeLinkAddress(address);
         mLinkProperties.removeRoute(getRouteForAddress(address));
-        try {
-            Os.write(mNetlinkSocket, message, 0, message.length);
-        } catch (ErrnoException | InterruptedIOException e) {
-            Log.e(TAG, "Failed to remove address " + address, e);
+        if (!NetlinkUtils.sendRtmDelAddressRequest(
+                Os.if_nametoindex(mIfName),
+                (Inet6Address) address.getAddress(),
+                (short) address.getPrefixLength())) {
+            Log.w(TAG, "Failed to remove address " + address.getAddress().getHostAddress());
         }
     }
 
+    public void updateAddresses(List<Ipv6AddressInfo> addressInfoList) {
+        final List<LinkAddress> newLinkAddresses = new ArrayList<>();
+        final List<InetAddress> newMulticastAddresses = new ArrayList<>();
+        boolean hasActiveOmrAddress = false;
+
+        for (Ipv6AddressInfo addressInfo : addressInfoList) {
+            if (addressInfo.isActiveOmr) {
+                hasActiveOmrAddress = true;
+                break;
+            }
+        }
+
+        for (Ipv6AddressInfo addressInfo : addressInfoList) {
+            InetAddress address = addressInfoToInetAddress(addressInfo);
+            if (address.isMulticastAddress()) {
+                newMulticastAddresses.add(address);
+            } else {
+                newLinkAddresses.add(newLinkAddress(addressInfo, hasActiveOmrAddress));
+            }
+        }
+
+        final CompareResult<LinkAddress> addressDiff =
+                new CompareResult<>(mLinkProperties.getAllLinkAddresses(), newLinkAddresses);
+        for (LinkAddress linkAddress : addressDiff.removed) {
+            removeAddress(linkAddress);
+        }
+        for (LinkAddress linkAddress : addressDiff.added) {
+            addAddress(linkAddress);
+        }
+
+        final CompareResult<InetAddress> multicastAddressDiff =
+                new CompareResult<>(mMulticastAddresses, newMulticastAddresses);
+        for (InetAddress address : multicastAddressDiff.removed) {
+            leaveGroup(address);
+        }
+        for (InetAddress address : multicastAddressDiff.added) {
+            joinGroup(address);
+        }
+        mMulticastAddresses.clear();
+        mMulticastAddresses.addAll(newMulticastAddresses);
+    }
+
+    public void updatePrefixes(List<OnMeshPrefixConfig> onMeshPrefixConfigList) {
+        final List<RouteInfo> newNetDataPrefixes = new ArrayList<>();
+
+        for (OnMeshPrefixConfig onMeshPrefixConfig : onMeshPrefixConfigList) {
+            newNetDataPrefixes.add(getRouteForOnMeshPrefix(onMeshPrefixConfig));
+        }
+
+        final CompareResult<RouteInfo> prefixDiff =
+                new CompareResult<>(mNetDataPrefixes, newNetDataPrefixes);
+        for (RouteInfo routeRemoved : prefixDiff.removed) {
+            mLinkProperties.removeRoute(routeRemoved);
+        }
+        for (RouteInfo routeAdded : prefixDiff.added) {
+            mLinkProperties.addRoute(routeAdded);
+        }
+
+        mNetDataPrefixes.clear();
+        mNetDataPrefixes.addAll(newNetDataPrefixes);
+    }
+
     private RouteInfo getRouteForAddress(LinkAddress linkAddress) {
-        return new RouteInfo(
-                new IpPrefix(linkAddress.getAddress(), linkAddress.getPrefixLength()),
-                null,
-                mIfName,
-                RouteInfo.RTN_UNICAST,
-                MTU);
+        return getRouteForIpPrefix(
+                new IpPrefix(linkAddress.getAddress(), linkAddress.getPrefixLength()));
+    }
+
+    private RouteInfo getRouteForOnMeshPrefix(OnMeshPrefixConfig onMeshPrefixConfig) {
+        return getRouteForIpPrefix(
+                new IpPrefix(
+                        bytesToInet6Address(onMeshPrefixConfig.prefix),
+                        onMeshPrefixConfig.prefixLength));
+    }
+
+    private RouteInfo getRouteForIpPrefix(IpPrefix ipPrefix) {
+        return new RouteInfo(ipPrefix, null, mIfName, RouteInfo.RTN_UNICAST, MTU);
     }
 
     /** Called by {@link ThreadNetworkControllerService} to do clean up when ot-daemon is dead. */
@@ -195,4 +290,139 @@
             Log.e(TAG, "Failed to set Thread TUN interface down");
         }
     }
+
+    private static InetAddress addressInfoToInetAddress(Ipv6AddressInfo addressInfo) {
+        return bytesToInet6Address(addressInfo.address);
+    }
+
+    private static Inet6Address bytesToInet6Address(byte[] addressBytes) {
+        try {
+            return (Inet6Address) Inet6Address.getByAddress(addressBytes);
+        } catch (UnknownHostException e) {
+            // This is unlikely to happen unless the Thread daemon is critically broken
+            return null;
+        }
+    }
+
+    private static LinkAddress newLinkAddress(
+            Ipv6AddressInfo addressInfo, boolean hasActiveOmrAddress) {
+        // Mesh-local addresses and OMR address have the same scope, to distinguish them we set
+        // mesh-local addresses as deprecated when there is an active OMR address.
+        // For OMR address and link-local address we only use the value isPreferred set by
+        // ot-daemon.
+        boolean isPreferred = addressInfo.isPreferred;
+        if (addressInfo.isMeshLocal && hasActiveOmrAddress) {
+            isPreferred = false;
+        }
+
+        final long deprecationTimeMillis =
+                isPreferred ? LinkAddress.LIFETIME_PERMANENT : SystemClock.elapsedRealtime();
+
+        final InetAddress address = addressInfoToInetAddress(addressInfo);
+
+        // flags and scope will be adjusted automatically depending on the address and
+        // its lifetimes.
+        return new LinkAddress(
+                address,
+                addressInfo.prefixLength,
+                0 /* flags */,
+                0 /* scope */,
+                deprecationTimeMillis,
+                LinkAddress.LIFETIME_PERMANENT /* expirationTime */);
+    }
+
+    private MulticastSocket createMulticastSocket() {
+        try {
+            return new MulticastSocket();
+        } catch (IOException e) {
+            throw new IllegalStateException("Failed to create multicast socket ", e);
+        }
+    }
+
+    private void joinGroup(InetAddress address) {
+        InetSocketAddress socketAddress = new InetSocketAddress(address, 0);
+        try {
+            mMulticastSocket.joinGroup(socketAddress, mNetworkInterface);
+        } catch (IOException e) {
+            if (e.getCause() instanceof ErrnoException) {
+                ErrnoException ee = (ErrnoException) e.getCause();
+                if (ee.errno == EADDRINUSE) {
+                    Log.w(TAG, "Already joined group" + address.getHostAddress(), e);
+                    return;
+                }
+            }
+            Log.e(TAG, "failed to join group " + address.getHostAddress(), e);
+        }
+    }
+
+    private void leaveGroup(InetAddress address) {
+        InetSocketAddress socketAddress = new InetSocketAddress(address, 0);
+        try {
+            mMulticastSocket.leaveGroup(socketAddress, mNetworkInterface);
+        } catch (IOException e) {
+            Log.e(TAG, "failed to leave group " + address.getHostAddress(), e);
+        }
+    }
+
+    /**
+     * Sets the address generation mode to {@code IN6_ADDR_GEN_MODE_NONE}.
+     *
+     * <p>So that the "thread-wpan" interface has only one IPv6 link local address which is
+     * generated by OpenThread.
+     */
+    private void setAddrGenModeToNone() {
+        StructNlMsgHdr header = new StructNlMsgHdr();
+        header.nlmsg_type = RTM_NEWLINK;
+        header.nlmsg_pid = 0;
+        header.nlmsg_seq = 0;
+        header.nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK;
+
+        StructIfinfoMsg ifInfo =
+                new StructIfinfoMsg(
+                        (short) 0 /* family */,
+                        0 /* type */,
+                        Os.if_nametoindex(mIfName),
+                        (IFF_MULTICAST | IFF_NOARP) /* flags */,
+                        0xffffffff /* change */);
+
+        // Nested attributes
+        // IFLA_AF_SPEC
+        //   AF_INET6
+        //     IFLA_INET6_ADDR_GEN_MODE
+        StructNlAttr addrGenMode =
+                new StructNlAttr(IFLA_INET6_ADDR_GEN_MODE, (byte) IN6_ADDR_GEN_MODE_NONE);
+        StructNlAttr afInet6 = new StructNlAttr((short) AF_INET6, addrGenMode);
+        StructNlAttr afSpec = new StructNlAttr(IFLA_AF_SPEC, afInet6);
+
+        final int msgLength =
+                StructNlMsgHdr.STRUCT_SIZE
+                        + StructIfinfoMsg.STRUCT_SIZE
+                        + afSpec.getAlignedLength();
+        byte[] msg = new byte[msgLength];
+        ByteBuffer buf = ByteBuffer.wrap(msg);
+        buf.order(ByteOrder.nativeOrder());
+
+        header.nlmsg_len = msgLength;
+        header.pack(buf);
+        ifInfo.pack(buf);
+        afSpec.pack(buf);
+
+        if (buf.position() != msgLength) {
+            throw new AssertionError(
+                    String.format(
+                            "Unexpected netlink message size (actual = %d, expected = %d)",
+                            buf.position(), msgLength));
+        }
+
+        if (DBG) {
+            Log.d(TAG, "ADDR_GEN_MODE message is:");
+            Log.d(TAG, HexDump.dumpHexString(msg));
+        }
+
+        try {
+            NetlinkUtils.sendOneShotKernelMessage(NETLINK_ROUTE, msg);
+        } catch (ErrnoException e) {
+            Log.e(TAG, "Failed to set ADDR_GEN_MODE to NONE", e);
+        }
+    }
 }
diff --git a/thread/service/jni/com_android_server_thread_InfraInterfaceController.cpp b/thread/service/jni/com_android_server_thread_InfraInterfaceController.cpp
index 5d24eab..1f260f2 100644
--- a/thread/service/jni/com_android_server_thread_InfraInterfaceController.cpp
+++ b/thread/service/jni/com_android_server_thread_InfraInterfaceController.cpp
@@ -42,15 +42,8 @@
 
 namespace android {
 static jint
-com_android_server_thread_InfraInterfaceController_createIcmp6Socket(JNIEnv *env, jobject clazz,
-                                                                     jstring interfaceName) {
-  ScopedUtfChars ifName(env, interfaceName);
-
-  struct icmp6_filter filter;
-  constexpr int kEnable = 1;
-  constexpr int kIpv6ChecksumOffset = 2;
-  constexpr int kHopLimit = 255;
-
+com_android_server_thread_InfraInterfaceController_createFilteredIcmp6Socket(JNIEnv *env,
+                                                                             jobject clazz) {
   // Initializes the ICMPv6 socket.
   int sock = socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6);
   if (sock == -1) {
@@ -59,6 +52,7 @@
     return -1;
   }
 
+  struct icmp6_filter filter;
   // Only accept Router Advertisements, Router Solicitations and Neighbor
   // Advertisements.
   ICMP6_FILTER_SETBLOCKALL(&filter);
@@ -73,53 +67,6 @@
     return -1;
   }
 
-  // We want a source address and interface index.
-
-  if (setsockopt(sock, IPPROTO_IPV6, IPV6_RECVPKTINFO, &kEnable, sizeof(kEnable)) != 0) {
-    jniThrowExceptionFmt(env, "java/io/IOException", "failed to setsockopt IPV6_RECVPKTINFO (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
-  if (setsockopt(sock, IPPROTO_RAW, IPV6_CHECKSUM, &kIpv6ChecksumOffset,
-                 sizeof(kIpv6ChecksumOffset)) != 0) {
-    jniThrowExceptionFmt(env, "java/io/IOException", "failed to setsockopt IPV6_CHECKSUM (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
-  // We need to be able to reject RAs arriving from off-link.
-  if (setsockopt(sock, IPPROTO_IPV6, IPV6_RECVHOPLIMIT, &kEnable, sizeof(kEnable)) != 0) {
-    jniThrowExceptionFmt(env, "java/io/IOException", "failed to setsockopt IPV6_RECVHOPLIMIT (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
-  if (setsockopt(sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &kHopLimit, sizeof(kHopLimit)) != 0) {
-    jniThrowExceptionFmt(env, "java/io/IOException", "failed to setsockopt IPV6_UNICAST_HOPS (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
-  if (setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &kHopLimit, sizeof(kHopLimit)) != 0) {
-    jniThrowExceptionFmt(env, "java/io/IOException",
-                         "failed to create the setsockopt IPV6_MULTICAST_HOPS (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
-  if (setsockopt(sock, SOL_SOCKET, SO_BINDTODEVICE, ifName.c_str(), strlen(ifName.c_str()))) {
-    jniThrowExceptionFmt(env, "java/io/IOException", "failed to setsockopt SO_BINDTODEVICE (%s)",
-                         strerror(errno));
-    close(sock);
-    return -1;
-  }
-
   return sock;
 }
 
@@ -129,8 +76,8 @@
 
 static const JNINativeMethod gMethods[] = {
     /* name, signature, funcPtr */
-    {"nativeCreateIcmp6Socket", "(Ljava/lang/String;)I",
-     (void *)com_android_server_thread_InfraInterfaceController_createIcmp6Socket},
+    {"nativeCreateFilteredIcmp6Socket", "()I",
+     (void *)com_android_server_thread_InfraInterfaceController_createFilteredIcmp6Socket},
 };
 
 int register_com_android_server_thread_InfraInterfaceController(JNIEnv *env) {
diff --git a/thread/tests/cts/AndroidTest.xml b/thread/tests/cts/AndroidTest.xml
index ffc181c..6eda1e9 100644
--- a/thread/tests/cts/AndroidTest.xml
+++ b/thread/tests/cts/AndroidTest.xml
@@ -38,6 +38,11 @@
         <option name="mainline-module-package-name" value="com.google.android.tethering" />
     </object>
 
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.DeviceFeatureModuleController">
+        <option name="required-feature" value="android.hardware.thread_network" />
+    </object>
+
     <!-- Install test -->
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="test-file-name" value="CtsThreadNetworkTestCases.apk" />
diff --git a/thread/tests/cts/src/android/net/thread/cts/ActiveOperationalDatasetTest.java b/thread/tests/cts/src/android/net/thread/cts/ActiveOperationalDatasetTest.java
index 0e76930..996d22d 100644
--- a/thread/tests/cts/src/android/net/thread/cts/ActiveOperationalDatasetTest.java
+++ b/thread/tests/cts/src/android/net/thread/cts/ActiveOperationalDatasetTest.java
@@ -30,6 +30,8 @@
 import android.net.thread.ActiveOperationalDataset.Builder;
 import android.net.thread.ActiveOperationalDataset.SecurityPolicy;
 import android.net.thread.OperationalDatasetTimestamp;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
 import android.util.SparseArray;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -38,6 +40,7 @@
 import com.google.common.primitives.Bytes;
 import com.google.common.testing.EqualsTester;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -46,6 +49,7 @@
 
 /** CTS tests for {@link ActiveOperationalDataset}. */
 @SmallTest
+@RequiresThreadFeature
 @RunWith(AndroidJUnit4.class)
 public final class ActiveOperationalDatasetTest {
     private static final int TYPE_ACTIVE_TIMESTAMP = 14;
@@ -81,6 +85,8 @@
     private static final ActiveOperationalDataset DEFAULT_DATASET =
             ActiveOperationalDataset.fromThreadTlvs(VALID_DATASET_TLVS);
 
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
     private static byte[] removeTlv(byte[] dataset, int type) {
         ByteArrayOutputStream os = new ByteArrayOutputStream(dataset.length);
         int i = 0;
diff --git a/thread/tests/cts/src/android/net/thread/cts/OperationalDatasetTimestampTest.java b/thread/tests/cts/src/android/net/thread/cts/OperationalDatasetTimestampTest.java
index 9be3d56..4d7c7f1 100644
--- a/thread/tests/cts/src/android/net/thread/cts/OperationalDatasetTimestampTest.java
+++ b/thread/tests/cts/src/android/net/thread/cts/OperationalDatasetTimestampTest.java
@@ -21,12 +21,15 @@
 import static org.junit.Assert.assertThrows;
 
 import android.net.thread.OperationalDatasetTimestamp;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
 
 import com.google.common.testing.EqualsTester;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -34,8 +37,11 @@
 
 /** Tests for {@link OperationalDatasetTimestamp}. */
 @SmallTest
+@RequiresThreadFeature
 @RunWith(AndroidJUnit4.class)
 public final class OperationalDatasetTimestampTest {
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
     @Test
     public void fromInstant_tooLargeInstant_throwsIllegalArgument() {
         assertThrows(
diff --git a/thread/tests/cts/src/android/net/thread/cts/PendingOperationalDatasetTest.java b/thread/tests/cts/src/android/net/thread/cts/PendingOperationalDatasetTest.java
index 0bb18ce..76be054 100644
--- a/thread/tests/cts/src/android/net/thread/cts/PendingOperationalDatasetTest.java
+++ b/thread/tests/cts/src/android/net/thread/cts/PendingOperationalDatasetTest.java
@@ -28,6 +28,8 @@
 import android.net.thread.ActiveOperationalDataset.SecurityPolicy;
 import android.net.thread.OperationalDatasetTimestamp;
 import android.net.thread.PendingOperationalDataset;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
 import android.util.SparseArray;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -36,6 +38,7 @@
 import com.google.common.primitives.Bytes;
 import com.google.common.testing.EqualsTester;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -44,8 +47,11 @@
 
 /** Tests for {@link PendingOperationalDataset}. */
 @SmallTest
+@RequiresThreadFeature
 @RunWith(AndroidJUnit4.class)
 public final class PendingOperationalDatasetTest {
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
     private static ActiveOperationalDataset createActiveDataset() throws Exception {
         SparseArray<byte[]> channelMask = new SparseArray<>(1);
         channelMask.put(0, new byte[] {0x00, 0x1f, (byte) 0xff, (byte) 0xe0});
diff --git a/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkControllerTest.java b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkControllerTest.java
index 36ce4d5..41f34ff 100644
--- a/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkControllerTest.java
+++ b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkControllerTest.java
@@ -17,6 +17,12 @@
 package android.net.thread.cts;
 
 import static android.Manifest.permission.ACCESS_NETWORK_STATE;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
+import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_CHILD;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_LEADER;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_ROUTER;
@@ -37,10 +43,8 @@
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
 
-import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThrows;
 import static org.junit.Assert.fail;
-import static org.junit.Assume.assumeNotNull;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
 
@@ -60,6 +64,8 @@
 import android.net.thread.ThreadNetworkException;
 import android.net.thread.ThreadNetworkManager;
 import android.net.thread.utils.TapTestNetworkTracker;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
 import android.os.Build;
 import android.os.HandlerThread;
 import android.os.OutcomeReceiver;
@@ -69,16 +75,13 @@
 import androidx.test.filters.LargeTest;
 
 import com.android.net.module.util.ArrayTrackRecord;
-import com.android.testutils.DevSdkIgnoreRule;
-import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
-import com.android.testutils.DevSdkIgnoreRunner;
 import com.android.testutils.FunctionalUtils.ThrowingRunnable;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
 import java.nio.charset.StandardCharsets;
 import java.time.Duration;
@@ -99,8 +102,7 @@
 
 /** CTS tests for {@link ThreadNetworkController}. */
 @LargeTest
-@RunWith(DevSdkIgnoreRunner.class)
-@IgnoreUpTo(Build.VERSION_CODES.TIRAMISU) // Thread is available on only U+
+@RequiresThreadFeature
 public class ThreadNetworkControllerTest {
     private static final int JOIN_TIMEOUT_MILLIS = 30 * 1000;
     private static final int LEAVE_TIMEOUT_MILLIS = 2_000;
@@ -109,11 +111,12 @@
     private static final int CALLBACK_TIMEOUT_MILLIS = 1_000;
     private static final int ENABLED_TIMEOUT_MILLIS = 2_000;
     private static final int SERVICE_DISCOVERY_TIMEOUT_MILLIS = 30_000;
+    private static final int SERVICE_LOST_TIMEOUT_MILLIS = 20_000;
     private static final String MESHCOP_SERVICE_TYPE = "_meshcop._udp";
     private static final String THREAD_NETWORK_PRIVILEGED =
             "android.permission.THREAD_NETWORK_PRIVILEGED";
 
-    @Rule public DevSdkIgnoreRule mIgnoreRule = new DevSdkIgnoreRule();
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
 
     private final Context mContext = ApplicationProvider.getApplicationContext();
     private ExecutorService mExecutor;
@@ -126,14 +129,10 @@
 
     @Before
     public void setUp() throws Exception {
-        ThreadNetworkManager manager = mContext.getSystemService(ThreadNetworkManager.class);
-        if (manager != null) {
-            mController = manager.getAllThreadNetworkControllers().get(0);
-        }
-
-        // TODO: we will also need it in tearDown(), it's better to have a Rule to skip
-        // tests if a feature is not available.
-        assumeNotNull(mController);
+        mController =
+                mContext.getSystemService(ThreadNetworkManager.class)
+                        .getAllThreadNetworkControllers()
+                        .get(0);
 
         mGrantedPermissions = new HashSet<String>();
         mExecutor = Executors.newSingleThreadExecutor();
@@ -146,9 +145,6 @@
 
     @After
     public void tearDown() throws Exception {
-        if (mController == null) {
-            return;
-        }
         dropAllPermissions();
         leaveAndWait(mController);
         tearDownTestNetwork();
@@ -177,6 +173,17 @@
     }
 
     @Test
+    public void subscribeThreadEnableState_getActiveDataset_onThreadEnableStateChangedNotCalled()
+            throws Exception {
+        EnabledStateListener listener = new EnabledStateListener(mController);
+        listener.expectThreadEnabledState(STATE_ENABLED);
+
+        getActiveOperationalDataset(mController);
+
+        listener.expectCallbackNotCalled();
+    }
+
+    @Test
     public void registerStateCallback_returnsUpdatedEnabledStates() throws Exception {
         CompletableFuture<Void> setFuture1 = new CompletableFuture<>();
         CompletableFuture<Void> setFuture2 = new CompletableFuture<>();
@@ -754,17 +761,6 @@
     }
 
     @Test
-    public void setEnabled_toggleAfterJoin_joinsThreadNetworkAgain() throws Exception {
-        joinRandomizedDatasetAndWait(mController);
-
-        setEnabledAndWait(mController, false);
-        assertThat(getDeviceRole(mController)).isEqualTo(DEVICE_ROLE_STOPPED);
-        setEnabledAndWait(mController, true);
-
-        runAsShell(ACCESS_NETWORK_STATE, () -> waitForAttachedState(mController));
-    }
-
-    @Test
     public void setEnabled_enableFollowedByDisable_allSucceed() throws Exception {
         joinRandomizedDatasetAndWait(mController);
         CompletableFuture<Void> setFuture1 = new CompletableFuture<>();
@@ -797,10 +793,14 @@
     public void threadNetworkCallback_deviceAttached_threadNetworkIsAvailable() throws Exception {
         CompletableFuture<Network> networkFuture = new CompletableFuture<>();
         ConnectivityManager cm = mContext.getSystemService(ConnectivityManager.class);
-        NetworkRequest networkRequest =
-                new NetworkRequest.Builder()
-                        .addTransportType(NetworkCapabilities.TRANSPORT_THREAD)
-                        .build();
+        NetworkRequest.Builder networkRequestBuilder =
+                new NetworkRequest.Builder().addTransportType(NetworkCapabilities.TRANSPORT_THREAD);
+        // Before V, we need to explicitly set `NET_CAPABILITY_LOCAL_NETWORK` capability to request
+        // a Thread network.
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            networkRequestBuilder.addCapability(NET_CAPABILITY_LOCAL_NETWORK);
+        }
+        NetworkRequest networkRequest = networkRequestBuilder.build();
         ConnectivityManager.NetworkCallback networkCallback =
                 new ConnectivityManager.NetworkCallback() {
                     @Override
@@ -816,6 +816,20 @@
 
         assertThat(isAttached(mController)).isTrue();
         assertThat(networkFuture.get(NETWORK_CALLBACK_TIMEOUT_MILLIS, MILLISECONDS)).isNotNull();
+        NetworkCapabilities caps =
+                runAsShell(
+                        ACCESS_NETWORK_STATE, () -> cm.getNetworkCapabilities(networkFuture.get()));
+        assertThat(caps).isNotNull();
+        assertThat(caps.hasTransport(NetworkCapabilities.TRANSPORT_THREAD)).isTrue();
+        assertThat(caps.getCapabilities())
+                .asList()
+                .containsAtLeast(
+                        NET_CAPABILITY_LOCAL_NETWORK,
+                        NET_CAPABILITY_NOT_METERED,
+                        NET_CAPABILITY_NOT_RESTRICTED,
+                        NET_CAPABILITY_NOT_VCN_MANAGED,
+                        NET_CAPABILITY_NOT_VPN,
+                        NET_CAPABILITY_TRUSTED);
     }
 
     private void grantPermissions(String... permissions) {
@@ -845,9 +859,11 @@
         assertThat(txtMap.get("rv")).isNotNull();
         assertThat(txtMap.get("tv")).isNotNull();
         assertThat(txtMap.get("sb")).isNotNull();
+        assertThat(new String(txtMap.get("vgh"))).isIn(List.of("0", "1"));
     }
 
     @Test
+    @Ignore("b/333649897: Enable this when it's not flaky at all")
     public void meshcopService_joinedNetwork_discoveredHasNetwork() throws Exception {
         setUpTestNetwork();
 
@@ -870,26 +886,29 @@
         assertThat(txtMap.get("tv")).isNotNull();
         assertThat(txtMap.get("sb")).isNotNull();
         assertThat(txtMap.get("id").length).isEqualTo(16);
+        assertThat(new String(txtMap.get("vgh"))).isIn(List.of("0", "1"));
     }
 
     @Test
     public void meshcopService_threadDisabled_notDiscovered() throws Exception {
         setUpTestNetwork();
-
         CompletableFuture<NsdServiceInfo> serviceLostFuture = new CompletableFuture<>();
         NsdManager.DiscoveryListener listener =
                 discoverForServiceLost(MESHCOP_SERVICE_TYPE, serviceLostFuture);
+
         setEnabledAndWait(mController, false);
+
         try {
-            serviceLostFuture.get(SERVICE_DISCOVERY_TIMEOUT_MILLIS, MILLISECONDS);
+            serviceLostFuture.get(SERVICE_LOST_TIMEOUT_MILLIS, MILLISECONDS);
         } catch (InterruptedException | ExecutionException | TimeoutException ignored) {
             // It's fine if the service lost event didn't show up. The service may not ever be
             // advertised.
         } finally {
             mNsdManager.stopServiceDiscovery(listener);
         }
-
-        assertThrows(TimeoutException.class, () -> discoverService(MESHCOP_SERVICE_TYPE));
+        assertThrows(
+                TimeoutException.class,
+                () -> discoverService(MESHCOP_SERVICE_TYPE, SERVICE_LOST_TIMEOUT_MILLIS));
     }
 
     private static void dropAllPermissions() {
@@ -1009,7 +1028,11 @@
         }
 
         public void expectThreadEnabledState(int enabled) {
-            assertNotNull(mReadHead.poll(ENABLED_TIMEOUT_MILLIS, e -> (e == enabled)));
+            assertThat(mReadHead.poll(ENABLED_TIMEOUT_MILLIS, e -> (e == enabled))).isNotNull();
+        }
+
+        public void expectCallbackNotCalled() {
+            assertThat(mReadHead.poll(CALLBACK_TIMEOUT_MILLIS, e -> true)).isNull();
         }
 
         public void unregisterStateCallback() {
@@ -1107,6 +1130,12 @@
 
     // Return the first discovered service instance.
     private NsdServiceInfo discoverService(String serviceType) throws Exception {
+        return discoverService(serviceType, SERVICE_DISCOVERY_TIMEOUT_MILLIS);
+    }
+
+    // Return the first discovered service instance.
+    private NsdServiceInfo discoverService(String serviceType, int timeoutMilliseconds)
+            throws Exception {
         CompletableFuture<NsdServiceInfo> serviceInfoFuture = new CompletableFuture<>();
         NsdManager.DiscoveryListener listener =
                 new DefaultDiscoveryListener() {
@@ -1115,9 +1144,14 @@
                         serviceInfoFuture.complete(serviceInfo);
                     }
                 };
-        mNsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, listener);
+        mNsdManager.discoverServices(
+                serviceType,
+                NsdManager.PROTOCOL_DNS_SD,
+                mTestNetworkTracker.getNetwork(),
+                mExecutor,
+                listener);
         try {
-            serviceInfoFuture.get(SERVICE_DISCOVERY_TIMEOUT_MILLIS, MILLISECONDS);
+            serviceInfoFuture.get(timeoutMilliseconds, MILLISECONDS);
         } finally {
             mNsdManager.stopServiceDiscovery(listener);
         }
@@ -1134,7 +1168,12 @@
                         serviceInfoFuture.complete(serviceInfo);
                     }
                 };
-        mNsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, listener);
+        mNsdManager.discoverServices(
+                serviceType,
+                NsdManager.PROTOCOL_DNS_SD,
+                mTestNetworkTracker.getNetwork(),
+                mExecutor,
+                listener);
         return listener;
     }
 
diff --git a/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java
index 7d9ae81..4de2e13 100644
--- a/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java
+++ b/thread/tests/cts/src/android/net/thread/cts/ThreadNetworkExceptionTest.java
@@ -25,17 +25,23 @@
 import static org.junit.Assert.assertThrows;
 
 import android.net.thread.ThreadNetworkException;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 /** CTS tests for {@link ThreadNetworkException}. */
 @SmallTest
+@RequiresThreadFeature
 @RunWith(AndroidJUnit4.class)
 public final class ThreadNetworkExceptionTest {
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
     @Test
     public void constructor_validValues_valuesAreConnectlySet() throws Exception {
         ThreadNetworkException errorThreadDisabled =
diff --git a/thread/tests/integration/Android.bp b/thread/tests/integration/Android.bp
index 6ba192d..71693af 100644
--- a/thread/tests/integration/Android.bp
+++ b/thread/tests/integration/Android.bp
@@ -30,8 +30,11 @@
         "net-tests-utils",
         "net-utils-device-common",
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
         "testables",
+        "ThreadNetworkTestUtils",
         "truth",
+        "ot-daemon-aidl-java",
     ],
     libs: [
         "android.test.runner",
diff --git a/thread/tests/integration/AndroidTest.xml b/thread/tests/integration/AndroidTest.xml
index 152c1c3..8f98941 100644
--- a/thread/tests/integration/AndroidTest.xml
+++ b/thread/tests/integration/AndroidTest.xml
@@ -31,6 +31,11 @@
         <option name="mainline-module-package-name" value="com.google.android.tethering" />
     </object>
 
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.DeviceFeatureModuleController">
+        <option name="required-feature" value="android.hardware.thread_network" />
+    </object>
+
     <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer" />
 
     <!-- Install test -->
diff --git a/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java b/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
index e8ef346..8c63d37 100644
--- a/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
+++ b/thread/tests/integration/src/android/net/thread/BorderRoutingTest.java
@@ -17,14 +17,11 @@
 package android.net.thread;
 
 import static android.Manifest.permission.MANAGE_TEST_NETWORKS;
-import static android.Manifest.permission.NETWORK_SETTINGS;
-import static android.net.thread.ThreadNetworkManager.PERMISSION_THREAD_NETWORK_PRIVILEGED;
 import static android.net.thread.utils.IntegrationTestUtils.JOIN_TIMEOUT;
-import static android.net.thread.utils.IntegrationTestUtils.RESTART_JOIN_TIMEOUT;
+import static android.net.thread.utils.IntegrationTestUtils.getIpv6LinkAddresses;
 import static android.net.thread.utils.IntegrationTestUtils.isExpectedIcmpv6Packet;
 import static android.net.thread.utils.IntegrationTestUtils.isFromIpv6Source;
 import static android.net.thread.utils.IntegrationTestUtils.isInMulticastGroup;
-import static android.net.thread.utils.IntegrationTestUtils.isSimulatedThreadRadioSupported;
 import static android.net.thread.utils.IntegrationTestUtils.isToIpv6Destination;
 import static android.net.thread.utils.IntegrationTestUtils.newPacketReader;
 import static android.net.thread.utils.IntegrationTestUtils.pollForPacket;
@@ -33,30 +30,36 @@
 
 import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ECHO_REPLY_TYPE;
 import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ECHO_REQUEST_TYPE;
-import static com.android.testutils.DeviceInfoUtils.isKernelVersionAtLeast;
 import static com.android.testutils.TestNetworkTrackerKt.initTestNetwork;
 import static com.android.testutils.TestPermissionUtil.runAsShell;
 
 import static com.google.common.io.BaseEncoding.base16;
-import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
+import static com.google.common.truth.Truth.assertThat;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
-import static org.junit.Assume.assumeNotNull;
-import static org.junit.Assume.assumeTrue;
 
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.Objects.requireNonNull;
 
 import android.content.Context;
 import android.net.InetAddresses;
+import android.net.IpPrefix;
+import android.net.LinkAddress;
 import android.net.LinkProperties;
 import android.net.MacAddress;
 import android.net.thread.utils.FullThreadDevice;
 import android.net.thread.utils.InfraNetworkDevice;
+import android.net.thread.utils.OtDaemonController;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresIpv6MulticastRouting;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresSimulationThreadDevice;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
+import android.net.thread.utils.ThreadNetworkControllerWrapper;
 import android.os.Handler;
 import android.os.HandlerThread;
+import android.os.SystemClock;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.filters.LargeTest;
@@ -67,6 +70,7 @@
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -74,27 +78,16 @@
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
 import java.util.function.Predicate;
 
 /** Integration test cases for Thread Border Routing feature. */
 @RunWith(AndroidJUnit4.class)
+@RequiresThreadFeature
+@RequiresSimulationThreadDevice
 @LargeTest
 public class BorderRoutingTest {
     private static final String TAG = BorderRoutingTest.class.getSimpleName();
-    private final Context mContext = ApplicationProvider.getApplicationContext();
-    private ThreadNetworkController mController;
-    private HandlerThread mHandlerThread;
-    private Handler mHandler;
-    private TestNetworkTracker mInfraNetworkTracker;
-    private List<FullThreadDevice> mFtds;
-    private TapPacketReader mInfraNetworkReader;
-    private InfraNetworkDevice mInfraDevice;
-
     private static final int NUM_FTD = 2;
-    private static final String KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED = "5.15.0";
     private static final Inet6Address GROUP_ADDR_SCOPE_5 =
             (Inet6Address) InetAddresses.parseNumericAddress("ff05::1234");
     private static final Inet6Address GROUP_ADDR_SCOPE_4 =
@@ -113,16 +106,24 @@
     private static final ActiveOperationalDataset DEFAULT_DATASET =
             ActiveOperationalDataset.fromThreadTlvs(DEFAULT_DATASET_TLVS);
 
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private final ThreadNetworkControllerWrapper mController =
+            ThreadNetworkControllerWrapper.newInstance(mContext);
+    private OtDaemonController mOtCtl;
+    private HandlerThread mHandlerThread;
+    private Handler mHandler;
+    private TestNetworkTracker mInfraNetworkTracker;
+    private List<FullThreadDevice> mFtds;
+    private TapPacketReader mInfraNetworkReader;
+    private InfraNetworkDevice mInfraDevice;
+
     @Before
     public void setUp() throws Exception {
-        assumeTrue(isSimulatedThreadRadioSupported());
-        final ThreadNetworkManager manager = mContext.getSystemService(ThreadNetworkManager.class);
-        if (manager != null) {
-            mController = manager.getAllThreadNetworkControllers().get(0);
-        }
-
-        // Run the tests on only devices where the Thread feature is available
-        assumeNotNull(mController);
+        // TODO: b/323301831 - This is a workaround to avoid unnecessary delay to re-form a network
+        mOtCtl = new OtDaemonController();
+        mOtCtl.factoryReset();
 
         mHandlerThread = new HandlerThread(getClass().getSimpleName());
         mHandlerThread.start();
@@ -130,13 +131,12 @@
         mFtds = new ArrayList<>();
 
         setUpInfraNetwork();
-
-        // BR forms a network.
-        startBrLeader();
+        mController.setEnabledAndWait(true);
+        mController.joinAndWait(DEFAULT_DATASET);
 
         // Creates a infra network device.
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
-        startInfraDevice();
+        startInfraDeviceAndWaitForOnLinkAddr();
 
         // Create Ftds
         for (int i = 0; i < NUM_FTD; ++i) {
@@ -146,20 +146,8 @@
 
     @After
     public void tearDown() throws Exception {
-        if (mController == null) {
-            return;
-        }
-
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                NETWORK_SETTINGS,
-                () -> {
-                    CountDownLatch latch = new CountDownLatch(2);
-                    mController.setTestNetworkAsUpstream(
-                            null, directExecutor(), v -> latch.countDown());
-                    mController.leave(directExecutor(), v -> latch.countDown());
-                    latch.await(10, TimeUnit.SECONDS);
-                });
+        mController.setTestNetworkAsUpstreamAndWait(null);
+        mController.leaveAndWait();
         tearDownInfraNetwork();
 
         mHandlerThread.quitSafely();
@@ -172,7 +160,7 @@
     }
 
     @Test
-    public void unicastRouting_infraDevicePingTheadDeviceOmr_replyReceived() throws Exception {
+    public void unicastRouting_infraDevicePingThreadDeviceOmr_replyReceived() throws Exception {
         /*
          * <pre>
          * Topology:
@@ -182,22 +170,69 @@
          * </pre>
          */
 
-        // Let ftd join the network.
         FullThreadDevice ftd = mFtds.get(0);
         startFtdChild(ftd);
 
-        // Infra device sends an echo request to FTD's OMR.
         mInfraDevice.sendEchoRequest(ftd.getOmrAddress());
 
         // Infra device receives an echo reply sent by FTD.
-        assertNotNull(pollForPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, null /* srcAddress */));
+        assertNotNull(pollForPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, ftd.getOmrAddress()));
+    }
+
+    @Test
+    public void unicastRouting_afterFactoryResetInfraDevicePingThreadDeviceOmr_replyReceived()
+            throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                 infra network                       Thread
+         * infra device -------------------- Border Router -------------- Full Thread device
+         *                                   (Cuttlefish)
+         * </pre>
+         */
+
+        startInfraDeviceAndWaitForOnLinkAddr();
+        FullThreadDevice ftd = mFtds.get(0);
+        startFtdChild(ftd);
+
+        mInfraDevice.sendEchoRequest(ftd.getOmrAddress());
+
+        assertNotNull(pollForPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, ftd.getOmrAddress()));
+    }
+
+    @Test
+    public void unicastRouting_afterInfraNetworkSwitchInfraDevicePingThreadDeviceOmr_replyReceived()
+            throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                 infra network                       Thread
+         * infra device -------------------- Border Router -------------- Full Thread device
+         *                                   (Cuttlefish)
+         * </pre>
+         */
+
+        FullThreadDevice ftd = mFtds.get(0);
+        startFtdChild(ftd);
+        Inet6Address ftdOmr = ftd.getOmrAddress();
+        // Create a new infra network and let Thread prefer it
+        TestNetworkTracker oldInfraNetworkTracker = mInfraNetworkTracker;
+        try {
+            setUpInfraNetwork();
+            mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
+            startInfraDeviceAndWaitForOnLinkAddr();
+
+            mInfraDevice.sendEchoRequest(ftd.getOmrAddress());
+
+            assertNotNull(pollForPacketOnInfraNetwork(ICMPV6_ECHO_REPLY_TYPE, ftdOmr));
+        } finally {
+            runAsShell(MANAGE_TEST_NETWORKS, () -> oldInfraNetworkTracker.teardown());
+        }
     }
 
     @Test
     public void unicastRouting_borderRouterSendsUdpToThreadDevice_datagramReceived()
             throws Exception {
-        assumeTrue(isSimulatedThreadRadioSupported());
-
         /*
          * <pre>
          * Topology:
@@ -207,19 +242,10 @@
          * </pre>
          */
 
-        // BR forms a network.
-        CompletableFuture<Void> joinFuture = new CompletableFuture<>();
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                () -> mController.join(DEFAULT_DATASET, directExecutor(), joinFuture::complete));
-        joinFuture.get(RESTART_JOIN_TIMEOUT.toMillis(), MILLISECONDS);
-
-        // Creates a Full Thread Device (FTD) and lets it join the network.
         FullThreadDevice ftd = mFtds.get(0);
         startFtdChild(ftd);
-        Inet6Address ftdOmr = ftd.getOmrAddress();
-        Inet6Address ftdMlEid = ftd.getMlEid();
-        assertNotNull(ftdMlEid);
+        Inet6Address ftdOmr = requireNonNull(ftd.getOmrAddress());
+        Inet6Address ftdMlEid = requireNonNull(ftd.getMlEid());
 
         ftd.udpBind(ftdOmr, 12345);
         sendUdpMessage(ftdOmr, 12345, "aaaaaaaa");
@@ -231,9 +257,24 @@
     }
 
     @Test
+    public void unicastRouting_meshLocalAddressesAreNotPreferred() throws Exception {
+        // When BR is enabled, there will be OMR address, so the mesh-local addresses are expected
+        // to be deprecated.
+        List<LinkAddress> linkAddresses = getIpv6LinkAddresses("thread-wpan");
+        IpPrefix meshLocalPrefix = DEFAULT_DATASET.getMeshLocalPrefix();
+
+        for (LinkAddress address : linkAddresses) {
+            if (meshLocalPrefix.contains(address.getAddress())) {
+                assertThat(address.getDeprecationTime()).isAtMost(SystemClock.elapsedRealtime());
+                assertThat(address.isPreferred()).isFalse();
+            }
+        }
+    }
+
+    @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_ftdSubscribedMulticastAddress_infraLinkJoinsMulticastGroup()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -252,10 +293,10 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void
             multicastRouting_ftdSubscribedScope3MulticastAddress_infraLinkNotJoinMulticastGroup()
                     throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -274,9 +315,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_ftdSubscribedMulticastAddress_canPingfromInfraLink()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -296,9 +337,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_inboundForwarding_afterBrRejoinFtdRepliesSubscribedAddress()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
 
         // TODO (b/327311034): Testing bbr state switch from primary mode to secondary mode and back
         // to primary mode requires an additional BR in the Thread network. This is not currently
@@ -306,9 +347,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_ftdSubscribedScope3MulticastAddress_cannotPingfromInfraLink()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -328,9 +369,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_ftdNotSubscribedMulticastAddress_cannotPingFromInfraDevice()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -349,9 +390,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_multipleFtdsSubscribedDifferentAddresses_canPingFromInfraDevice()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -385,9 +426,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_multipleFtdsSubscribedSameAddress_canPingFromInfraDevice()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -420,8 +461,8 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_outboundForwarding_scopeLargerThan3IsForwarded() throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -445,9 +486,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_outboundForwarding_scopeSmallerThan4IsNotForwarded()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -468,8 +509,8 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_outboundForwarding_llaToScope4IsNotForwarded() throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -484,15 +525,15 @@
         Inet6Address ftdLla = ftd.getLinkLocalAddress();
         assertNotNull(ftdLla);
 
-        ftd.ping(GROUP_ADDR_SCOPE_4, ftdLla, 100 /* size */, 1 /* count */);
+        ftd.ping(GROUP_ADDR_SCOPE_4, ftdLla);
 
         assertNull(
                 pollForPacketOnInfraNetwork(ICMPV6_ECHO_REQUEST_TYPE, ftdLla, GROUP_ADDR_SCOPE_4));
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_outboundForwarding_mlaToScope4IsNotForwarded() throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -508,7 +549,7 @@
         assertFalse(ftdMlas.isEmpty());
 
         for (Inet6Address ftdMla : ftdMlas) {
-            ftd.ping(GROUP_ADDR_SCOPE_4, ftdMla, 100 /* size */, 1 /* count */);
+            ftd.ping(GROUP_ADDR_SCOPE_4, ftdMla);
 
             assertNull(
                     pollForPacketOnInfraNetwork(
@@ -517,9 +558,9 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_infraNetworkSwitch_ftdRepliesToSubscribedAddress()
             throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -538,7 +579,7 @@
         tearDownInfraNetwork();
         setUpInfraNetwork();
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
-        startInfraDevice();
+        startInfraDeviceAndWaitForOnLinkAddr();
 
         mInfraDevice.sendEchoRequest(GROUP_ADDR_SCOPE_5);
 
@@ -546,8 +587,8 @@
     }
 
     @Test
+    @RequiresIpv6MulticastRouting
     public void multicastRouting_infraNetworkSwitch_outboundPacketIsForwarded() throws Exception {
-        assumeTrue(isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED));
         /*
          * <pre>
          * Topology:
@@ -565,49 +606,29 @@
         tearDownInfraNetwork();
         setUpInfraNetwork();
         mInfraNetworkReader = newPacketReader(mInfraNetworkTracker.getTestIface(), mHandler);
-        startInfraDevice();
+        startInfraDeviceAndWaitForOnLinkAddr();
 
-        ftd.ping(GROUP_ADDR_SCOPE_5);
         ftd.ping(GROUP_ADDR_SCOPE_4);
 
         assertNotNull(
-                pollForPacketOnInfraNetwork(ICMPV6_ECHO_REQUEST_TYPE, ftdOmr, GROUP_ADDR_SCOPE_5));
-        assertNotNull(
                 pollForPacketOnInfraNetwork(ICMPV6_ECHO_REQUEST_TYPE, ftdOmr, GROUP_ADDR_SCOPE_4));
     }
 
-    private void setUpInfraNetwork() {
+    private void setUpInfraNetwork() throws Exception {
         mInfraNetworkTracker =
                 runAsShell(
                         MANAGE_TEST_NETWORKS,
                         () ->
                                 initTestNetwork(
                                         mContext, new LinkProperties(), 5000 /* timeoutMs */));
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                NETWORK_SETTINGS,
-                () -> {
-                    CompletableFuture<Void> future = new CompletableFuture<>();
-                    mController.setTestNetworkAsUpstream(
-                            mInfraNetworkTracker.getTestIface().getInterfaceName(),
-                            directExecutor(),
-                            future::complete);
-                    future.get(5, TimeUnit.SECONDS);
-                });
+        mController.setTestNetworkAsUpstreamAndWait(
+                mInfraNetworkTracker.getTestIface().getInterfaceName());
     }
 
     private void tearDownInfraNetwork() {
         runAsShell(MANAGE_TEST_NETWORKS, () -> mInfraNetworkTracker.teardown());
     }
 
-    private void startBrLeader() throws Exception {
-        CompletableFuture<Void> joinFuture = new CompletableFuture<>();
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                () -> mController.join(DEFAULT_DATASET, directExecutor(), joinFuture::complete));
-        joinFuture.get(RESTART_JOIN_TIMEOUT.toSeconds(), TimeUnit.SECONDS);
-    }
-
     private void startFtdChild(FullThreadDevice ftd) throws Exception {
         ftd.factoryReset();
         ftd.joinNetwork(DEFAULT_DATASET);
@@ -617,7 +638,7 @@
         assertNotNull(ftdOmr);
     }
 
-    private void startInfraDevice() throws Exception {
+    private void startInfraDeviceAndWaitForOnLinkAddr() throws Exception {
         mInfraDevice =
                 new InfraNetworkDevice(MacAddress.fromString("1:2:3:4:5:6"), mInfraNetworkReader);
         mInfraDevice.runSlaac(Duration.ofSeconds(60));
diff --git a/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java b/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java
new file mode 100644
index 0000000..e10f134
--- /dev/null
+++ b/thread/tests/integration/src/android/net/thread/ServiceDiscoveryTest.java
@@ -0,0 +1,502 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.thread;
+
+import static android.net.InetAddresses.parseNumericAddress;
+import static android.net.nsd.NsdManager.PROTOCOL_DNS_SD;
+import static android.net.thread.utils.IntegrationTestUtils.JOIN_TIMEOUT;
+import static android.net.thread.utils.IntegrationTestUtils.SERVICE_DISCOVERY_TIMEOUT;
+import static android.net.thread.utils.IntegrationTestUtils.discoverForServiceLost;
+import static android.net.thread.utils.IntegrationTestUtils.discoverService;
+import static android.net.thread.utils.IntegrationTestUtils.resolveService;
+import static android.net.thread.utils.IntegrationTestUtils.resolveServiceUntil;
+import static android.net.thread.utils.IntegrationTestUtils.waitFor;
+
+import static com.google.common.io.BaseEncoding.base16;
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+
+import android.content.Context;
+import android.net.nsd.NsdManager;
+import android.net.nsd.NsdServiceInfo;
+import android.net.thread.utils.FullThreadDevice;
+import android.net.thread.utils.OtDaemonController;
+import android.net.thread.utils.TapTestNetworkTracker;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresSimulationThreadDevice;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
+import android.net.thread.utils.ThreadNetworkControllerWrapper;
+import android.os.HandlerThread;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.google.common.truth.Correspondence;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Ignore;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet6Address;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeoutException;
+
+/** Integration test cases for Service Discovery feature. */
+@RunWith(AndroidJUnit4.class)
+@RequiresThreadFeature
+@RequiresSimulationThreadDevice
+@LargeTest
+public class ServiceDiscoveryTest {
+    private static final String TAG = ServiceDiscoveryTest.class.getSimpleName();
+    private static final int NUM_FTD = 3;
+
+    // A valid Thread Active Operational Dataset generated from OpenThread CLI "dataset init new".
+    private static final byte[] DEFAULT_DATASET_TLVS =
+            base16().decode(
+                            "0E080000000000010000000300001335060004001FFFE002"
+                                    + "08ACC214689BC40BDF0708FD64DB1225F47E0B0510F26B31"
+                                    + "53760F519A63BAFDDFFC80D2AF030F4F70656E5468726561"
+                                    + "642D643961300102D9A00410A245479C836D551B9CA557F7"
+                                    + "B9D351B40C0402A0FFF8");
+    private static final ActiveOperationalDataset DEFAULT_DATASET =
+            ActiveOperationalDataset.fromThreadTlvs(DEFAULT_DATASET_TLVS);
+
+    private static final Correspondence<byte[], byte[]> BYTE_ARRAY_EQUALITY =
+            Correspondence.from(Arrays::equals, "is equivalent to");
+
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private final ThreadNetworkControllerWrapper mController =
+            ThreadNetworkControllerWrapper.newInstance(mContext);
+    private final OtDaemonController mOtCtl = new OtDaemonController();
+    private HandlerThread mHandlerThread;
+    private NsdManager mNsdManager;
+    private TapTestNetworkTracker mTestNetworkTracker;
+    private final List<FullThreadDevice> mFtds = new ArrayList<>();
+    private final List<RegistrationListener> mRegistrationListeners = new ArrayList<>();
+
+    @Before
+    public void setUp() throws Exception {
+        mOtCtl.factoryReset();
+        mController.setEnabledAndWait(true);
+        mController.joinAndWait(DEFAULT_DATASET);
+        mNsdManager = mContext.getSystemService(NsdManager.class);
+
+        mHandlerThread = new HandlerThread(TAG);
+        mHandlerThread.start();
+
+        mTestNetworkTracker = new TapTestNetworkTracker(mContext, mHandlerThread.getLooper());
+        assertThat(mTestNetworkTracker).isNotNull();
+        mController.setTestNetworkAsUpstreamAndWait(mTestNetworkTracker.getInterfaceName());
+
+        // Create the FTDs in setUp() so that the FTDs can be safely released in tearDown().
+        // Don't create new FTDs in test cases.
+        for (int i = 0; i < NUM_FTD; ++i) {
+            FullThreadDevice ftd = new FullThreadDevice(10 + i /* node ID */);
+            ftd.autoStartSrpClient();
+            mFtds.add(ftd);
+        }
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        for (RegistrationListener listener : mRegistrationListeners) {
+            unregisterService(listener);
+        }
+        for (FullThreadDevice ftd : mFtds) {
+            // Clear registered SRP hosts and services
+            if (ftd.isSrpHostRegistered()) {
+                ftd.removeSrpHost();
+            }
+            ftd.destroy();
+        }
+        if (mTestNetworkTracker != null) {
+            mTestNetworkTracker.tearDown();
+        }
+        if (mHandlerThread != null) {
+            mHandlerThread.quitSafely();
+            mHandlerThread.join();
+        }
+        mController.setTestNetworkAsUpstreamAndWait(null);
+        mController.leaveAndWait();
+    }
+
+    @Test
+    public void advertisingProxy_multipleSrpClientsRegisterServices_servicesResolvableByMdns()
+            throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                    Thread
+         *  Border Router -------------- Full Thread device 1
+         *  (Cuttlefish)         |
+         *                       +------ Full Thread device 2
+         *                       |
+         *                       +------ Full Thread device 3
+         * </pre>
+         */
+
+        // Creates Full Thread Devices (FTD) and let them join the network.
+        for (FullThreadDevice ftd : mFtds) {
+            ftd.joinNetwork(DEFAULT_DATASET);
+            ftd.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+        }
+
+        int randomId = new Random().nextInt(10_000);
+
+        String serviceNamePrefix = "service-" + randomId + "-";
+        String serviceTypePrefix = "_test" + randomId;
+        String hostnamePrefix = "host-" + randomId + "-";
+
+        // For every FTD, let it register an SRP service.
+        for (int i = 0; i < mFtds.size(); ++i) {
+            FullThreadDevice ftd = mFtds.get(i);
+            ftd.setSrpHostname(hostnamePrefix + i);
+            ftd.setSrpHostAddresses(List.of(ftd.getOmrAddress(), ftd.getMlEid()));
+            ftd.addSrpService(
+                    serviceNamePrefix + i,
+                    serviceTypePrefix + i + "._tcp",
+                    List.of("_sub1", "_sub2"),
+                    12345 /* port */,
+                    Map.of("key1", bytes(0x01, 0x02), "key2", bytes(i)));
+        }
+
+        // Check the advertised services are discoverable and resolvable by NsdManager
+        for (int i = 0; i < mFtds.size(); ++i) {
+            NsdServiceInfo discoveredService =
+                    discoverService(mNsdManager, serviceTypePrefix + i + "._tcp");
+            assertThat(discoveredService).isNotNull();
+            NsdServiceInfo resolvedService = resolveService(mNsdManager, discoveredService);
+            assertThat(resolvedService.getServiceName()).isEqualTo(serviceNamePrefix + i);
+            assertThat(resolvedService.getServiceType()).isEqualTo(serviceTypePrefix + i + "._tcp");
+            assertThat(resolvedService.getPort()).isEqualTo(12345);
+            assertThat(resolvedService.getAttributes())
+                    .comparingValuesUsing(BYTE_ARRAY_EQUALITY)
+                    .containsExactly("key1", bytes(0x01, 0x02), "key2", bytes(i));
+            assertThat(resolvedService.getHostname()).isEqualTo(hostnamePrefix + i);
+            assertThat(resolvedService.getHostAddresses())
+                    .containsExactly(mFtds.get(i).getOmrAddress());
+        }
+    }
+
+    @Test
+    public void advertisingProxy_srpClientUpdatesService_updatedServiceResolvableByMdns()
+            throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                    Thread
+         *  Border Router -------------- Full Thread device
+         *  (Cuttlefish)
+         * </pre>
+         */
+
+        // Creates a Full Thread Devices (FTD) and let it join the network.
+        FullThreadDevice ftd = mFtds.get(0);
+        ftd.joinNetwork(DEFAULT_DATASET);
+        ftd.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+        ftd.setSrpHostname("my-host");
+        ftd.setSrpHostAddresses(List.of((Inet6Address) parseNumericAddress("2001:db8::1")));
+        ftd.addSrpService(
+                "my-service",
+                "_test._tcp",
+                Collections.emptyList() /* subtypes */,
+                12345 /* port */,
+                Map.of("key1", bytes(0x01, 0x02), "key2", bytes(0x03)));
+
+        // Update the host addresses
+        ftd.setSrpHostAddresses(
+                List.of(
+                        (Inet6Address) parseNumericAddress("2001:db8::1"),
+                        (Inet6Address) parseNumericAddress("2001:db8::2")));
+        // Update the service
+        ftd.updateSrpService(
+                "my-service", "_test._tcp", List.of("_sub3"), 11111, Map.of("key1", bytes(0x04)));
+        waitFor(ftd::isSrpHostRegistered, SERVICE_DISCOVERY_TIMEOUT);
+
+        // Check the advertised service is discoverable and resolvable by NsdManager
+        NsdServiceInfo discoveredService = discoverService(mNsdManager, "_test._tcp");
+        assertThat(discoveredService).isNotNull();
+        NsdServiceInfo resolvedService =
+                resolveServiceUntil(
+                        mNsdManager,
+                        discoveredService,
+                        s -> s.getPort() == 11111 && s.getHostAddresses().size() == 2);
+        assertThat(resolvedService.getServiceName()).isEqualTo("my-service");
+        assertThat(resolvedService.getServiceType()).isEqualTo("_test._tcp");
+        assertThat(resolvedService.getPort()).isEqualTo(11111);
+        assertThat(resolvedService.getAttributes())
+                .comparingValuesUsing(BYTE_ARRAY_EQUALITY)
+                .containsExactly("key1", bytes(0x04));
+        assertThat(resolvedService.getHostname()).isEqualTo("my-host");
+        assertThat(resolvedService.getHostAddresses())
+                .containsExactly(
+                        parseNumericAddress("2001:db8::1"), parseNumericAddress("2001:db8::2"));
+    }
+
+    @Test
+    @Ignore("TODO: b/333806992 - Enable when it's not flaky at all")
+    public void advertisingProxy_srpClientUnregistersService_serviceIsNotDiscoverableByMdns()
+            throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                    Thread
+         *  Border Router -------------- Full Thread device
+         *  (Cuttlefish)
+         * </pre>
+         */
+
+        // Creates a Full Thread Devices (FTD) and let it join the network.
+        FullThreadDevice ftd = mFtds.get(0);
+        ftd.joinNetwork(DEFAULT_DATASET);
+        ftd.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+        ftd.setSrpHostname("my-host");
+        ftd.setSrpHostAddresses(
+                List.of(
+                        (Inet6Address) parseNumericAddress("2001:db8::1"),
+                        (Inet6Address) parseNumericAddress("2001:db8::2")));
+        ftd.addSrpService(
+                "my-service",
+                "_test._udp",
+                List.of("_sub1"),
+                12345 /* port */,
+                Map.of("key1", bytes(0x01, 0x02), "key2", bytes(0x03)));
+        // Wait for the service to be discoverable by NsdManager.
+        assertThat(discoverService(mNsdManager, "_test._udp")).isNotNull();
+
+        // Unregister the service.
+        CompletableFuture<NsdServiceInfo> serviceLostFuture = new CompletableFuture<>();
+        NsdManager.DiscoveryListener listener =
+                discoverForServiceLost(mNsdManager, "_test._udp", serviceLostFuture);
+        ftd.removeSrpService("my-service", "_test._udp", true /* notifyServer */);
+
+        // Verify the service becomes lost.
+        try {
+            serviceLostFuture.get(SERVICE_DISCOVERY_TIMEOUT.toMillis(), MILLISECONDS);
+        } finally {
+            mNsdManager.stopServiceDiscovery(listener);
+        }
+        assertThrows(TimeoutException.class, () -> discoverService(mNsdManager, "_test._udp"));
+    }
+
+    @Test
+    public void meshcopOverlay_vendorAndModelNameAreSetToOverlayValue() throws Exception {
+        NsdServiceInfo discoveredService = discoverService(mNsdManager, "_meshcop._udp");
+        assertThat(discoveredService).isNotNull();
+        NsdServiceInfo meshcopService = resolveService(mNsdManager, discoveredService);
+
+        Map<String, byte[]> txtMap = meshcopService.getAttributes();
+        assertThat(txtMap.get("vn")).isEqualTo("Android".getBytes(UTF_8));
+        assertThat(txtMap.get("mn")).isEqualTo("Thread Border Router".getBytes(UTF_8));
+    }
+
+    @Test
+    @Ignore("TODO: b/332452386 - Enable this test case when it handles the multi-client case well")
+    public void discoveryProxy_multipleClientsBrowseAndResolveServiceOverMdns() throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                    Thread
+         *  Border Router -------------- Full Thread device
+         *  (Cuttlefish)
+         * </pre>
+         */
+
+        RegistrationListener listener = new RegistrationListener();
+        NsdServiceInfo info = new NsdServiceInfo();
+        info.setServiceType("_testservice._tcp");
+        info.setServiceName("test-service");
+        info.setPort(12345);
+        info.setHostname("testhost");
+        info.setHostAddresses(List.of(parseNumericAddress("2001::1")));
+        info.setAttribute("key1", bytes(0x01, 0x02));
+        info.setAttribute("key2", bytes(0x03));
+        registerService(info, listener);
+        mRegistrationListeners.add(listener);
+        for (int i = 0; i < NUM_FTD; ++i) {
+            FullThreadDevice ftd = mFtds.get(i);
+            ftd.joinNetwork(DEFAULT_DATASET);
+            ftd.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+            ftd.setDnsServerAddress(mOtCtl.getMlEid().getHostAddress());
+        }
+        final ArrayList<NsdServiceInfo> browsedServices = new ArrayList<>();
+        final ArrayList<NsdServiceInfo> resolvedServices = new ArrayList<>();
+        final ArrayList<Thread> threads = new ArrayList<>();
+        for (int i = 0; i < NUM_FTD; ++i) {
+            browsedServices.add(null);
+            resolvedServices.add(null);
+        }
+        for (int i = 0; i < NUM_FTD; ++i) {
+            final FullThreadDevice ftd = mFtds.get(i);
+            final int index = i;
+            Runnable task =
+                    () -> {
+                        browsedServices.set(
+                                index,
+                                ftd.browseService("_testservice._tcp.default.service.arpa."));
+                        resolvedServices.set(
+                                index,
+                                ftd.resolveService(
+                                        "test-service", "_testservice._tcp.default.service.arpa."));
+                    };
+            threads.add(new Thread(task));
+        }
+        for (Thread thread : threads) {
+            thread.start();
+        }
+        for (Thread thread : threads) {
+            thread.join();
+        }
+
+        for (int i = 0; i < NUM_FTD; ++i) {
+            NsdServiceInfo browsedService = browsedServices.get(i);
+            assertThat(browsedService.getServiceName()).isEqualTo("test-service");
+            assertThat(browsedService.getPort()).isEqualTo(12345);
+
+            NsdServiceInfo resolvedService = resolvedServices.get(i);
+            assertThat(resolvedService.getServiceName()).isEqualTo("test-service");
+            assertThat(resolvedService.getPort()).isEqualTo(12345);
+            assertThat(resolvedService.getHostname()).isEqualTo("testhost.default.service.arpa.");
+            assertThat(resolvedService.getHostAddresses())
+                    .containsExactly(parseNumericAddress("2001::1"));
+            assertThat(resolvedService.getAttributes())
+                    .comparingValuesUsing(BYTE_ARRAY_EQUALITY)
+                    .containsExactly("key1", bytes(0x01, 0x02), "key2", bytes(3));
+        }
+    }
+
+    @Test
+    public void discoveryProxy_browseAndResolveServiceAtSrpServer() throws Exception {
+        /*
+         * <pre>
+         * Topology:
+         *                    Thread
+         *  Border Router -------+------ SRP client
+         *  (Cuttlefish)         |
+         *                       +------ DNS client
+         *
+         * </pre>
+         */
+        FullThreadDevice srpClient = mFtds.get(0);
+        srpClient.joinNetwork(DEFAULT_DATASET);
+        srpClient.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+        srpClient.setSrpHostname("my-host");
+        srpClient.setSrpHostAddresses(List.of((Inet6Address) parseNumericAddress("2001::1")));
+        srpClient.addSrpService(
+                "my-service",
+                "_test._udp",
+                List.of("_sub1"),
+                12345 /* port */,
+                Map.of("key1", bytes(0x01, 0x02), "key2", bytes(0x03)));
+
+        FullThreadDevice dnsClient = mFtds.get(1);
+        dnsClient.joinNetwork(DEFAULT_DATASET);
+        dnsClient.waitForStateAnyOf(List.of("router", "child"), JOIN_TIMEOUT);
+        dnsClient.setDnsServerAddress(mOtCtl.getMlEid().getHostAddress());
+
+        NsdServiceInfo browsedService = dnsClient.browseService("_test._udp.default.service.arpa.");
+        assertThat(browsedService.getServiceName()).isEqualTo("my-service");
+        assertThat(browsedService.getPort()).isEqualTo(12345);
+        assertThat(browsedService.getHostname()).isEqualTo("my-host.default.service.arpa.");
+        assertThat(browsedService.getHostAddresses())
+                .containsExactly(parseNumericAddress("2001::1"));
+        assertThat(browsedService.getAttributes())
+                .comparingValuesUsing(BYTE_ARRAY_EQUALITY)
+                .containsExactly("key1", bytes(0x01, 0x02), "key2", bytes(3));
+
+        NsdServiceInfo resolvedService =
+                dnsClient.resolveService("my-service", "_test._udp.default.service.arpa.");
+        assertThat(resolvedService.getServiceName()).isEqualTo("my-service");
+        assertThat(resolvedService.getPort()).isEqualTo(12345);
+        assertThat(resolvedService.getHostname()).isEqualTo("my-host.default.service.arpa.");
+        assertThat(resolvedService.getHostAddresses())
+                .containsExactly(parseNumericAddress("2001::1"));
+        assertThat(resolvedService.getAttributes())
+                .comparingValuesUsing(BYTE_ARRAY_EQUALITY)
+                .containsExactly("key1", bytes(0x01, 0x02), "key2", bytes(3));
+    }
+
+    private void registerService(NsdServiceInfo serviceInfo, RegistrationListener listener)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        mNsdManager.registerService(serviceInfo, PROTOCOL_DNS_SD, listener);
+        listener.waitForRegistered();
+    }
+
+    private void unregisterService(RegistrationListener listener)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        mNsdManager.unregisterService(listener);
+        listener.waitForUnregistered();
+    }
+
+    private static class RegistrationListener implements NsdManager.RegistrationListener {
+        private final CompletableFuture<Void> mRegisteredFuture = new CompletableFuture<>();
+        private final CompletableFuture<Void> mUnRegisteredFuture = new CompletableFuture<>();
+
+        RegistrationListener() {}
+
+        @Override
+        public void onRegistrationFailed(NsdServiceInfo serviceInfo, int errorCode) {}
+
+        @Override
+        public void onUnregistrationFailed(NsdServiceInfo serviceInfo, int errorCode) {}
+
+        @Override
+        public void onServiceRegistered(NsdServiceInfo serviceInfo) {
+            mRegisteredFuture.complete(null);
+        }
+
+        @Override
+        public void onServiceUnregistered(NsdServiceInfo serviceInfo) {
+            mUnRegisteredFuture.complete(null);
+        }
+
+        public void waitForRegistered()
+                throws InterruptedException, ExecutionException, TimeoutException {
+            mRegisteredFuture.get(SERVICE_DISCOVERY_TIMEOUT.toMillis(), MILLISECONDS);
+        }
+
+        public void waitForUnregistered()
+                throws InterruptedException, ExecutionException, TimeoutException {
+            mUnRegisteredFuture.get(SERVICE_DISCOVERY_TIMEOUT.toMillis(), MILLISECONDS);
+        }
+    }
+
+    private static byte[] bytes(int... byteInts) {
+        byte[] bytes = new byte[byteInts.length];
+        for (int i = 0; i < byteInts.length; ++i) {
+            bytes[i] = (byte) byteInts[i];
+        }
+        return bytes;
+    }
+}
diff --git a/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java b/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
index 70897f0..61b6eac 100644
--- a/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
+++ b/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
@@ -16,31 +16,36 @@
 
 package android.net.thread;
 
-import static android.Manifest.permission.NETWORK_SETTINGS;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_DETACHED;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_LEADER;
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_STOPPED;
-import static android.net.thread.ThreadNetworkManager.PERMISSION_THREAD_NETWORK_PRIVILEGED;
 import static android.net.thread.utils.IntegrationTestUtils.CALLBACK_TIMEOUT;
-import static android.net.thread.utils.IntegrationTestUtils.LEAVE_TIMEOUT;
 import static android.net.thread.utils.IntegrationTestUtils.RESTART_JOIN_TIMEOUT;
-import static android.net.thread.utils.IntegrationTestUtils.waitForStateAnyOf;
+import static android.net.thread.utils.IntegrationTestUtils.getIpv6LinkAddresses;
+import static android.net.thread.utils.IntegrationTestUtils.getPrefixesFromNetData;
+import static android.net.thread.utils.IntegrationTestUtils.getThreadNetwork;
+import static android.net.thread.utils.IntegrationTestUtils.isInMulticastGroup;
+import static android.net.thread.utils.IntegrationTestUtils.waitFor;
 
 import static com.android.compatibility.common.util.SystemUtil.runShellCommand;
-import static com.android.testutils.TestPermissionUtil.runAsShell;
+import static com.android.compatibility.common.util.SystemUtil.runShellCommandOrThrow;
+import static com.android.server.thread.openthread.IOtDaemon.TUN_IF_NAME;
 
 import static com.google.common.io.BaseEncoding.base16;
 import static com.google.common.truth.Truth.assertThat;
-import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
+import static com.google.common.truth.Truth.assertWithMessage;
 
-import static org.junit.Assume.assumeNotNull;
-
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
-
-import android.annotation.Nullable;
 import android.content.Context;
-import android.net.thread.ThreadNetworkController.StateCallback;
+import android.net.ConnectivityManager;
+import android.net.InetAddresses;
+import android.net.IpPrefix;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.thread.utils.FullThreadDevice;
 import android.net.thread.utils.OtDaemonController;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
+import android.net.thread.utils.ThreadNetworkControllerWrapper;
 import android.os.SystemClock;
 
 import androidx.test.core.app.ApplicationProvider;
@@ -49,20 +54,34 @@
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
 import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.time.Duration;
+import java.util.Arrays;
 import java.util.List;
-import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
 
 /** Tests for E2E Android Thread integration with ot-daemon, ConnectivityService, etc.. */
 @LargeTest
+@RequiresThreadFeature
 @RunWith(AndroidJUnit4.class)
 public class ThreadIntegrationTest {
-    private final Context mContext = ApplicationProvider.getApplicationContext();
-    private ThreadNetworkController mController;
-    private OtDaemonController mOtCtl;
+    // The byte[] buffer size for UDP tests
+    private static final int UDP_BUFFER_SIZE = 1024;
+
+    // The maximum time for OT addresses to be propagated to the TUN interface "thread-wpan"
+    private static final Duration TUN_ADDR_UPDATE_TIMEOUT = Duration.ofSeconds(1);
+
+    // The maximum time for changes to be propagated to netdata.
+    private static final Duration NET_DATA_UPDATE_TIMEOUT = Duration.ofSeconds(1);
 
     // A valid Thread Active Operational Dataset generated from OpenThread CLI "dataset init new".
     private static final byte[] DEFAULT_DATASET_TLVS =
@@ -75,124 +94,276 @@
     private static final ActiveOperationalDataset DEFAULT_DATASET =
             ActiveOperationalDataset.fromThreadTlvs(DEFAULT_DATASET_TLVS);
 
+    private static final Inet6Address GROUP_ADDR_ALL_ROUTERS =
+            (Inet6Address) InetAddresses.parseNumericAddress("ff02::2");
+
+    private static final String TEST_NO_SLAAC_PREFIX = "9101:dead:beef:cafe::/64";
+    private static final InetAddress TEST_NO_SLAAC_PREFIX_ADDRESS =
+            InetAddresses.parseNumericAddress("9101:dead:beef:cafe::");
+
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
+    private ExecutorService mExecutor;
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private final ThreadNetworkControllerWrapper mController =
+            ThreadNetworkControllerWrapper.newInstance(mContext);
+    private OtDaemonController mOtCtl;
+    private FullThreadDevice mFtd;
+
     @Before
     public void setUp() throws Exception {
-        final ThreadNetworkManager manager = mContext.getSystemService(ThreadNetworkManager.class);
-        if (manager != null) {
-            mController = manager.getAllThreadNetworkControllers().get(0);
-        }
-
-        // Run the tests on only devices where the Thread feature is available
-        assumeNotNull(mController);
-
+        mExecutor = Executors.newSingleThreadExecutor();
         mOtCtl = new OtDaemonController();
-        leaveAndWait(mController);
+        mController.leaveAndWait();
+
+        // TODO: b/323301831 - This is a workaround to avoid unnecessary delay to re-form a network
+        mOtCtl.factoryReset();
+
+        mFtd = new FullThreadDevice(10 /* nodeId */);
     }
 
     @After
     public void tearDown() throws Exception {
-        if (mController == null) {
-            return;
-        }
+        mController.setTestNetworkAsUpstreamAndWait(null);
+        mController.leaveAndWait();
 
-        setTestUpStreamNetworkAndWait(mController, null);
-        leaveAndWait(mController);
+        mFtd.destroy();
+        mExecutor.shutdownNow();
     }
 
     @Test
     public void otDaemonRestart_notJoinedAndStopped_deviceRoleIsStopped() throws Exception {
-        leaveAndWait(mController);
+        mController.leaveAndWait();
 
         runShellCommand("stop ot-daemon");
         // TODO(b/323331973): the sleep is needed to workaround the race conditions
         SystemClock.sleep(200);
 
-        waitForStateAnyOf(mController, List.of(DEVICE_ROLE_STOPPED), CALLBACK_TIMEOUT);
+        mController.waitForRole(DEVICE_ROLE_STOPPED, CALLBACK_TIMEOUT);
     }
 
     @Test
-    public void otDaemonRestart_JoinedNetworkAndStopped_autoRejoined() throws Exception {
-        joinAndWait(mController, DEFAULT_DATASET);
+    public void otDaemonRestart_JoinedNetworkAndStopped_autoRejoinedAndTunIfStateConsistent()
+            throws Exception {
+        mController.joinAndWait(DEFAULT_DATASET);
 
         runShellCommand("stop ot-daemon");
 
-        waitForStateAnyOf(mController, List.of(DEVICE_ROLE_DETACHED), CALLBACK_TIMEOUT);
-        waitForStateAnyOf(mController, List.of(DEVICE_ROLE_LEADER), RESTART_JOIN_TIMEOUT);
+        mController.waitForRole(DEVICE_ROLE_DETACHED, CALLBACK_TIMEOUT);
+        mController.waitForRole(DEVICE_ROLE_LEADER, RESTART_JOIN_TIMEOUT);
+        assertThat(mOtCtl.isInterfaceUp()).isTrue();
+        assertThat(runShellCommand("ifconfig thread-wpan")).contains("UP POINTOPOINT RUNNING");
     }
 
     @Test
     public void otDaemonFactoryReset_deviceRoleIsStopped() throws Exception {
-        joinAndWait(mController, DEFAULT_DATASET);
+        mController.joinAndWait(DEFAULT_DATASET);
 
         mOtCtl.factoryReset();
 
-        assertThat(getDeviceRole(mController)).isEqualTo(DEVICE_ROLE_STOPPED);
+        assertThat(mController.getDeviceRole()).isEqualTo(DEVICE_ROLE_STOPPED);
     }
 
     @Test
     public void otDaemonFactoryReset_addressesRemoved() throws Exception {
-        joinAndWait(mController, DEFAULT_DATASET);
+        mController.joinAndWait(DEFAULT_DATASET);
 
         mOtCtl.factoryReset();
-        String ifconfig = runShellCommand("ifconfig thread-wpan");
 
+        String ifconfig = runShellCommand("ifconfig thread-wpan");
         assertThat(ifconfig).doesNotContain("inet6 addr");
     }
 
+    // TODO (b/323300829): add test for removing an OT address
     @Test
-    public void tunInterface_joinedNetwork_otAddressesAddedToTunInterface() throws Exception {
-        joinAndWait(mController, DEFAULT_DATASET);
+    public void tunInterface_joinedNetwork_otAndTunAddressesMatch() throws Exception {
+        mController.joinAndWait(DEFAULT_DATASET);
 
-        String ifconfig = runShellCommand("ifconfig thread-wpan");
         List<Inet6Address> otAddresses = mOtCtl.getAddresses();
         assertThat(otAddresses).isNotEmpty();
-        for (Inet6Address otAddress : otAddresses) {
-            assertThat(ifconfig).contains(otAddress.getHostAddress());
+        // TODO: it's cleaner to have a retry() method to retry failed asserts in given delay so
+        // that we can write assertThat() in the Predicate
+        waitFor(
+                () -> {
+                    List<Inet6Address> tunAddresses =
+                            getIpv6LinkAddresses("thread-wpan").stream()
+                                    .map(linkAddr -> (Inet6Address) linkAddr.getAddress())
+                                    .toList();
+                    return otAddresses.containsAll(tunAddresses)
+                            && tunAddresses.containsAll(otAddresses);
+                },
+                TUN_ADDR_UPDATE_TIMEOUT);
+    }
+
+    @Test
+    public void otDaemonRestart_latestCountryCodeIsSetToOtDaemon() throws Exception {
+        runThreadCommand("force-country-code enabled CN");
+
+        runShellCommand("stop ot-daemon");
+        // TODO(b/323331973): the sleep is needed to workaround the race conditions
+        SystemClock.sleep(200);
+        mController.waitForRole(DEVICE_ROLE_STOPPED, CALLBACK_TIMEOUT);
+
+        assertThat(mOtCtl.getCountryCode()).isEqualTo("CN");
+    }
+
+    @Test
+    public void udp_appStartEchoServer_endDeviceUdpEchoSuccess() throws Exception {
+        // Topology:
+        //   Test App ------ thread-wpan ------ End Device
+
+        mController.joinAndWait(DEFAULT_DATASET);
+        startFtdChild(mFtd, DEFAULT_DATASET);
+        final Inet6Address serverAddress = mOtCtl.getMeshLocalAddresses().get(0);
+        final int serverPort = 9527;
+
+        mExecutor.execute(() -> startUdpEchoServerAndWait(serverAddress, serverPort));
+        mFtd.udpOpen();
+        mFtd.udpSend("Hello,Thread", serverAddress, serverPort);
+        String udpReply = mFtd.udpReceive();
+
+        assertThat(udpReply).isEqualTo("Hello,Thread");
+    }
+
+    @Test
+    public void joinNetworkWithBrDisabled_meshLocalAddressesArePreferred() throws Exception {
+        // When BR feature is disabled, there is no OMR address, so the mesh-local addresses are
+        // expected to be preferred.
+        mOtCtl.executeCommand("br disable");
+        mController.joinAndWait(DEFAULT_DATASET);
+
+        IpPrefix meshLocalPrefix = DEFAULT_DATASET.getMeshLocalPrefix();
+        List<LinkAddress> linkAddresses = getIpv6LinkAddresses("thread-wpan");
+        for (LinkAddress address : linkAddresses) {
+            if (meshLocalPrefix.contains(address.getAddress())) {
+                assertThat(address.getDeprecationTime())
+                        .isGreaterThan(SystemClock.elapsedRealtime());
+                assertThat(address.isPreferred()).isTrue();
+            }
         }
+
+        mOtCtl.executeCommand("br enable");
+    }
+
+    @Test
+    public void joinNetwork_tunInterfaceJoinsAllRouterMulticastGroup() throws Exception {
+        mController.joinAndWait(DEFAULT_DATASET);
+
+        assertTunInterfaceMemberOfGroup(GROUP_ADDR_ALL_ROUTERS);
+    }
+
+    @Test
+    public void edPingsMeshLocalAddresses_oneReplyPerRequest() throws Exception {
+        mController.joinAndWait(DEFAULT_DATASET);
+        startFtdChild(mFtd, DEFAULT_DATASET);
+        List<Inet6Address> meshLocalAddresses = mOtCtl.getMeshLocalAddresses();
+
+        for (Inet6Address address : meshLocalAddresses) {
+            assertWithMessage(
+                            "There may be duplicated replies of ping request to "
+                                    + address.getHostAddress())
+                    .that(mFtd.ping(address, 2))
+                    .isEqualTo(2);
+        }
+    }
+
+    @Test
+    public void addPrefixToNetData_routeIsAddedToTunInterface() throws Exception {
+        ConnectivityManager cm = mContext.getSystemService(ConnectivityManager.class);
+        mController.joinAndWait(DEFAULT_DATASET);
+
+        // Ftd child doesn't have the ability to add a prefix, so let BR itself add a prefix.
+        mOtCtl.executeCommand("prefix add " + TEST_NO_SLAAC_PREFIX + " pros med");
+        mOtCtl.executeCommand("netdata register");
+        waitFor(
+                () -> {
+                    String netData = mOtCtl.executeCommand("netdata show");
+                    return getPrefixesFromNetData(netData).contains(TEST_NO_SLAAC_PREFIX);
+                },
+                NET_DATA_UPDATE_TIMEOUT);
+
+        LinkProperties lp = cm.getLinkProperties(getThreadNetwork(CALLBACK_TIMEOUT));
+        assertThat(lp).isNotNull();
+        assertThat(lp.getRoutes().stream().anyMatch(r -> r.matches(TEST_NO_SLAAC_PREFIX_ADDRESS)))
+                .isTrue();
+    }
+
+    @Test
+    public void removePrefixFromNetData_routeIsRemovedFromTunInterface() throws Exception {
+        ConnectivityManager cm = mContext.getSystemService(ConnectivityManager.class);
+        mController.joinAndWait(DEFAULT_DATASET);
+        mOtCtl.executeCommand("prefix add " + TEST_NO_SLAAC_PREFIX + " pros med");
+        mOtCtl.executeCommand("netdata register");
+
+        mOtCtl.executeCommand("prefix remove " + TEST_NO_SLAAC_PREFIX);
+        mOtCtl.executeCommand("netdata register");
+        waitFor(
+                () -> {
+                    String netData = mOtCtl.executeCommand("netdata show");
+                    return !getPrefixesFromNetData(netData).contains(TEST_NO_SLAAC_PREFIX);
+                },
+                NET_DATA_UPDATE_TIMEOUT);
+
+        LinkProperties lp = cm.getLinkProperties(getThreadNetwork(CALLBACK_TIMEOUT));
+        assertThat(lp).isNotNull();
+        assertThat(lp.getRoutes().stream().anyMatch(r -> r.matches(TEST_NO_SLAAC_PREFIX_ADDRESS)))
+                .isFalse();
+    }
+
+    @Test
+    public void toggleThreadNetwork_routeFromPreviousNetDataIsRemoved() throws Exception {
+        ConnectivityManager cm = mContext.getSystemService(ConnectivityManager.class);
+        mController.joinAndWait(DEFAULT_DATASET);
+        mOtCtl.executeCommand("prefix add " + TEST_NO_SLAAC_PREFIX + " pros med");
+        mOtCtl.executeCommand("netdata register");
+
+        mController.leaveAndWait();
+        mOtCtl.factoryReset();
+        mController.joinAndWait(DEFAULT_DATASET);
+
+        LinkProperties lp = cm.getLinkProperties(getThreadNetwork(CALLBACK_TIMEOUT));
+        assertThat(lp).isNotNull();
+        assertThat(lp.getRoutes().stream().anyMatch(r -> r.matches(TEST_NO_SLAAC_PREFIX_ADDRESS)))
+                .isFalse();
     }
 
     // TODO (b/323300829): add more tests for integration with linux platform and
     // ConnectivityService
 
-    private static int getDeviceRole(ThreadNetworkController controller) throws Exception {
-        CompletableFuture<Integer> future = new CompletableFuture<>();
-        StateCallback callback = future::complete;
-        controller.registerStateCallback(directExecutor(), callback);
-        try {
-            return future.get(CALLBACK_TIMEOUT.toMillis(), MILLISECONDS);
-        } finally {
-            controller.unregisterStateCallback(callback);
+    private static String runThreadCommand(String cmd) {
+        return runShellCommandOrThrow("cmd thread_network " + cmd);
+    }
+
+    private void startFtdChild(FullThreadDevice ftd, ActiveOperationalDataset activeDataset)
+            throws Exception {
+        ftd.factoryReset();
+        ftd.joinNetwork(activeDataset);
+        ftd.waitForStateAnyOf(List.of("router", "child"), Duration.ofSeconds(8));
+    }
+
+    /**
+     * Starts a UDP echo server and replies to the first UDP message.
+     *
+     * <p>This method exits when the first UDP message is received and the reply is sent
+     */
+    private void startUdpEchoServerAndWait(InetAddress serverAddress, int serverPort) {
+        try (var udpServerSocket = new DatagramSocket(serverPort, serverAddress)) {
+            DatagramPacket recvPacket =
+                    new DatagramPacket(new byte[UDP_BUFFER_SIZE], UDP_BUFFER_SIZE);
+            udpServerSocket.receive(recvPacket);
+            byte[] sendBuffer = Arrays.copyOf(recvPacket.getData(), recvPacket.getData().length);
+            udpServerSocket.send(
+                    new DatagramPacket(
+                            sendBuffer,
+                            sendBuffer.length,
+                            (Inet6Address) recvPacket.getAddress(),
+                            recvPacket.getPort()));
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
         }
     }
 
-    private static void joinAndWait(
-            ThreadNetworkController controller, ActiveOperationalDataset activeDataset)
-            throws Exception {
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                () -> controller.join(activeDataset, directExecutor(), result -> {}));
-        waitForStateAnyOf(controller, List.of(DEVICE_ROLE_LEADER), RESTART_JOIN_TIMEOUT);
-    }
-
-    private static void leaveAndWait(ThreadNetworkController controller) throws Exception {
-        CompletableFuture<Void> future = new CompletableFuture<>();
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                () -> controller.leave(directExecutor(), future::complete));
-        future.get(LEAVE_TIMEOUT.toMillis(), MILLISECONDS);
-    }
-
-    private static void setTestUpStreamNetworkAndWait(
-            ThreadNetworkController controller, @Nullable String networkInterfaceName)
-            throws Exception {
-        CompletableFuture<Void> future = new CompletableFuture<>();
-        runAsShell(
-                PERMISSION_THREAD_NETWORK_PRIVILEGED,
-                NETWORK_SETTINGS,
-                () -> {
-                    controller.setTestNetworkAsUpstream(
-                            networkInterfaceName, directExecutor(), future::complete);
-                });
-        future.get(CALLBACK_TIMEOUT.toMillis(), MILLISECONDS);
+    private void assertTunInterfaceMemberOfGroup(Inet6Address address) throws Exception {
+        waitFor(() -> isInMulticastGroup(TUN_IF_NAME, address), TUN_ADDR_UPDATE_TIMEOUT);
     }
 }
diff --git a/thread/tests/integration/src/android/net/thread/ThreadNetworkControllerTest.java b/thread/tests/integration/src/android/net/thread/ThreadNetworkControllerTest.java
new file mode 100644
index 0000000..ba04348
--- /dev/null
+++ b/thread/tests/integration/src/android/net/thread/ThreadNetworkControllerTest.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.thread;
+
+import static android.net.thread.ThreadNetworkException.ERROR_UNSUPPORTED_OPERATION;
+
+import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;
+
+import static com.android.testutils.TestPermissionUtil.runAsShell;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.content.Context;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
+import android.os.OutcomeReceiver;
+import android.util.SparseIntArray;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+/** Tests for hide methods of {@link ThreadNetworkController}. */
+@LargeTest
+@RequiresThreadFeature
+@RunWith(AndroidJUnit4.class)
+public class ThreadNetworkControllerTest {
+    private static final int VALID_POWER = 32_767;
+    private static final int INVALID_POWER = 32_768;
+    private static final int VALID_CHANNEL = 20;
+    private static final int INVALID_CHANNEL = 10;
+    private static final String THREAD_NETWORK_PRIVILEGED =
+            "android.permission.THREAD_NETWORK_PRIVILEGED";
+
+    private static final SparseIntArray CHANNEL_MAX_POWERS =
+            new SparseIntArray() {
+                {
+                    put(20, 32767);
+                }
+            };
+
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private ExecutorService mExecutor;
+    private ThreadNetworkController mController;
+
+    @Before
+    public void setUp() throws Exception {
+        mController =
+                mContext.getSystemService(ThreadNetworkManager.class)
+                        .getAllThreadNetworkControllers()
+                        .get(0);
+
+        mExecutor = Executors.newSingleThreadExecutor();
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        dropAllPermissions();
+    }
+
+    @Test
+    public void setChannelMaxPowers_withPrivilegedPermission_success() throws Exception {
+        CompletableFuture<Void> powerFuture = new CompletableFuture<>();
+
+        runAsShell(
+                THREAD_NETWORK_PRIVILEGED,
+                () ->
+                        mController.setChannelMaxPowers(
+                                CHANNEL_MAX_POWERS, mExecutor, newOutcomeReceiver(powerFuture)));
+
+        try {
+            assertThat(powerFuture.get()).isNull();
+        } catch (ExecutionException exception) {
+            ThreadNetworkException thrown = (ThreadNetworkException) exception.getCause();
+            assertThat(thrown.getErrorCode()).isEqualTo(ERROR_UNSUPPORTED_OPERATION);
+        }
+    }
+
+    @Test
+    public void setChannelMaxPowers_withoutPrivilegedPermission_throwsSecurityException()
+            throws Exception {
+        dropAllPermissions();
+
+        assertThrows(
+                SecurityException.class,
+                () -> mController.setChannelMaxPowers(CHANNEL_MAX_POWERS, mExecutor, v -> {}));
+    }
+
+    @Test
+    public void setChannelMaxPowers_emptyChannelMaxPower_throwsIllegalArgumentException() {
+        assertThrows(
+                IllegalArgumentException.class,
+                () -> mController.setChannelMaxPowers(new SparseIntArray(), mExecutor, v -> {}));
+    }
+
+    @Test
+    public void setChannelMaxPowers_invalidChannel_throwsIllegalArgumentException() {
+        final SparseIntArray INVALID_CHANNEL_ARRAY =
+                new SparseIntArray() {
+                    {
+                        put(INVALID_CHANNEL, VALID_POWER);
+                    }
+                };
+
+        assertThrows(
+                IllegalArgumentException.class,
+                () -> mController.setChannelMaxPowers(INVALID_CHANNEL_ARRAY, mExecutor, v -> {}));
+    }
+
+    @Test
+    public void setChannelMaxPowers_invalidPower_throwsIllegalArgumentException() {
+        final SparseIntArray INVALID_POWER_ARRAY =
+                new SparseIntArray() {
+                    {
+                        put(VALID_CHANNEL, INVALID_POWER);
+                    }
+                };
+
+        assertThrows(
+                IllegalArgumentException.class,
+                () -> mController.setChannelMaxPowers(INVALID_POWER_ARRAY, mExecutor, v -> {}));
+    }
+
+    private static void dropAllPermissions() {
+        getInstrumentation().getUiAutomation().dropShellPermissionIdentity();
+    }
+
+    private static <V> OutcomeReceiver<V, ThreadNetworkException> newOutcomeReceiver(
+            CompletableFuture<V> future) {
+        return new OutcomeReceiver<V, ThreadNetworkException>() {
+            @Override
+            public void onResult(V result) {
+                future.complete(result);
+            }
+
+            @Override
+            public void onError(ThreadNetworkException e) {
+                future.completeExceptionally(e);
+            }
+        };
+    }
+}
diff --git a/thread/tests/integration/src/android/net/thread/ThreadNetworkShellCommandTest.java b/thread/tests/integration/src/android/net/thread/ThreadNetworkShellCommandTest.java
new file mode 100644
index 0000000..8835f40
--- /dev/null
+++ b/thread/tests/integration/src/android/net/thread/ThreadNetworkShellCommandTest.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.thread;
+
+import static android.net.thread.ThreadNetworkController.STATE_DISABLED;
+import static android.net.thread.ThreadNetworkController.STATE_ENABLED;
+import static android.net.thread.ThreadNetworkException.ERROR_THREAD_DISABLED;
+
+import static com.android.compatibility.common.util.SystemUtil.runShellCommandOrThrow;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+
+import android.content.Context;
+import android.net.thread.utils.ThreadFeatureCheckerRule;
+import android.net.thread.utils.ThreadFeatureCheckerRule.RequiresThreadFeature;
+import android.net.thread.utils.ThreadNetworkControllerWrapper;
+
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.filters.LargeTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.concurrent.ExecutionException;
+
+/** Integration tests for {@link ThreadNetworkShellCommand}. */
+@LargeTest
+@RequiresThreadFeature
+@RunWith(AndroidJUnit4.class)
+public class ThreadNetworkShellCommandTest {
+    @Rule public final ThreadFeatureCheckerRule mThreadRule = new ThreadFeatureCheckerRule();
+
+    private final Context mContext = ApplicationProvider.getApplicationContext();
+    private final ThreadNetworkControllerWrapper mController =
+            ThreadNetworkControllerWrapper.newInstance(mContext);
+
+    @Before
+    public void setUp() {
+        ensureThreadEnabled();
+    }
+
+    @After
+    public void tearDown() {
+        ensureThreadEnabled();
+    }
+
+    private static void ensureThreadEnabled() {
+        runThreadCommand("force-stop-ot-daemon disabled");
+        runThreadCommand("enable");
+    }
+
+    @Test
+    public void enable_threadStateIsEnabled() throws Exception {
+        runThreadCommand("enable");
+
+        assertThat(mController.getEnabledState()).isEqualTo(STATE_ENABLED);
+    }
+
+    @Test
+    public void disable_threadStateIsDisabled() throws Exception {
+        runThreadCommand("disable");
+
+        assertThat(mController.getEnabledState()).isEqualTo(STATE_DISABLED);
+    }
+
+    @Test
+    public void forceStopOtDaemon_forceStopEnabled_otDaemonServiceDisappear() {
+        runThreadCommand("force-stop-ot-daemon enabled");
+
+        assertThat(runShellCommandOrThrow("service list")).doesNotContain("ot_daemon");
+    }
+
+    @Test
+    public void forceStopOtDaemon_forceStopEnabled_canNotEnableThread() throws Exception {
+        runThreadCommand("force-stop-ot-daemon enabled");
+
+        ExecutionException thrown =
+                assertThrows(ExecutionException.class, () -> mController.setEnabledAndWait(true));
+        ThreadNetworkException cause = (ThreadNetworkException) thrown.getCause();
+        assertThat(cause.getErrorCode()).isEqualTo(ERROR_THREAD_DISABLED);
+    }
+
+    @Test
+    public void forceStopOtDaemon_forceStopDisabled_otDaemonServiceAppears() throws Exception {
+        runThreadCommand("force-stop-ot-daemon disabled");
+
+        assertThat(runShellCommandOrThrow("service list")).contains("ot_daemon");
+    }
+
+    @Test
+    public void forceStopOtDaemon_forceStopDisabled_canEnableThread() throws Exception {
+        runThreadCommand("force-stop-ot-daemon disabled");
+
+        mController.setEnabledAndWait(true);
+        assertThat(mController.getEnabledState()).isEqualTo(STATE_ENABLED);
+    }
+
+    @Test
+    public void forceCountryCode_setCN_getCountryCodeReturnsCN() {
+        runThreadCommand("force-country-code enabled CN");
+
+        final String result = runThreadCommand("get-country-code");
+        assertThat(result).contains("Thread country code = CN");
+    }
+
+    private static String runThreadCommand(String cmd) {
+        return runShellCommandOrThrow("cmd thread_network " + cmd);
+    }
+}
diff --git a/thread/tests/integration/src/android/net/thread/utils/FullThreadDevice.java b/thread/tests/integration/src/android/net/thread/utils/FullThreadDevice.java
index 6cb1675..c0a8eea 100644
--- a/thread/tests/integration/src/android/net/thread/utils/FullThreadDevice.java
+++ b/thread/tests/integration/src/android/net/thread/utils/FullThreadDevice.java
@@ -15,15 +15,21 @@
  */
 package android.net.thread.utils;
 
+import static android.net.thread.utils.IntegrationTestUtils.SERVICE_DISCOVERY_TIMEOUT;
 import static android.net.thread.utils.IntegrationTestUtils.waitFor;
 
 import static com.google.common.io.BaseEncoding.base16;
 
-import static org.junit.Assert.fail;
+import static java.util.concurrent.TimeUnit.SECONDS;
 
 import android.net.InetAddresses;
 import android.net.IpPrefix;
+import android.net.nsd.NsdServiceInfo;
 import android.net.thread.ActiveOperationalDataset;
+import android.os.Handler;
+import android.os.HandlerThread;
+
+import com.google.errorprone.annotations.FormatMethod;
 
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
@@ -31,9 +37,14 @@
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
 import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.nio.charset.StandardCharsets;
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeoutException;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -47,9 +58,21 @@
  * available commands.
  */
 public final class FullThreadDevice {
+    private static final int HOP_LIMIT = 64;
+    private static final int PING_INTERVAL = 1;
+    private static final int PING_SIZE = 100;
+    // There may not be a response for the ping command, using a short timeout to keep the tests
+    // short.
+    private static final float PING_TIMEOUT_0_1_SECOND = 0.1f;
+    // 1 second timeout should be used when response is expected.
+    private static final float PING_TIMEOUT_1_SECOND = 1f;
+    private static final int READ_LINE_TIMEOUT_SECONDS = 5;
+
     private final Process mProcess;
     private final BufferedReader mReader;
     private final BufferedWriter mWriter;
+    private final HandlerThread mReaderHandlerThread;
+    private final Handler mReaderHandler;
 
     private ActiveOperationalDataset mActiveOperationalDataset;
 
@@ -66,17 +89,22 @@
      */
     public FullThreadDevice(int nodeId) {
         try {
-            mProcess = Runtime.getRuntime().exec("/system/bin/ot-cli-ftd " + nodeId);
+            mProcess = Runtime.getRuntime().exec("/system/bin/ot-cli-ftd -Leth1 " + nodeId);
         } catch (IOException e) {
-            throw new IllegalStateException("Failed to start ot-cli-ftd (id=" + nodeId + ")", e);
+            throw new IllegalStateException(
+                    "Failed to start ot-cli-ftd -Leth1 (id=" + nodeId + ")", e);
         }
         mReader = new BufferedReader(new InputStreamReader(mProcess.getInputStream()));
         mWriter = new BufferedWriter(new OutputStreamWriter(mProcess.getOutputStream()));
+        mReaderHandlerThread = new HandlerThread("FullThreadDeviceReader");
+        mReaderHandlerThread.start();
+        mReaderHandler = new Handler(mReaderHandlerThread.getLooper());
         mActiveOperationalDataset = null;
     }
 
     public void destroy() {
         mProcess.destroy();
+        mReaderHandlerThread.quit();
     }
 
     /**
@@ -191,19 +219,184 @@
     public void udpBind(Inet6Address address, int port) {
         udpClose();
         udpOpen();
-        executeCommand(String.format("udp bind %s %d", address.getHostAddress(), port));
+        executeCommand("udp bind %s %d", address.getHostAddress(), port);
     }
 
     /** Returns the message received on the UDP socket. */
     public String udpReceive() throws IOException {
         Pattern pattern =
                 Pattern.compile("> (\\d+) bytes from ([\\da-f:]+) (\\d+) ([\\x00-\\x7F]+)");
-        Matcher matcher = pattern.matcher(mReader.readLine());
+        Matcher matcher = pattern.matcher(readLine());
         matcher.matches();
 
         return matcher.group(4);
     }
 
+    /** Sends a UDP message to given IPv6 address and port. */
+    public void udpSend(String message, Inet6Address serverAddr, int serverPort) {
+        executeCommand("udp send %s %d %s", serverAddr.getHostAddress(), serverPort, message);
+    }
+
+    /** Enables the SRP client and run in autostart mode. */
+    public void autoStartSrpClient() {
+        executeCommand("srp client autostart enable");
+    }
+
+    /** Sets the hostname (e.g. "MyHost") for the SRP client. */
+    public void setSrpHostname(String hostname) {
+        executeCommand("srp client host name " + hostname);
+    }
+
+    /** Sets the host addresses for the SRP client. */
+    public void setSrpHostAddresses(List<Inet6Address> addresses) {
+        executeCommand(
+                "srp client host address "
+                        + String.join(
+                                " ",
+                                addresses.stream().map(Inet6Address::getHostAddress).toList()));
+    }
+
+    /** Removes the SRP host */
+    public void removeSrpHost() {
+        executeCommand("srp client host remove 1 1");
+    }
+
+    /**
+     * Adds an SRP service for the SRP client and wait for the registration to complete.
+     *
+     * @param serviceName the service name like "MyService"
+     * @param serviceType the service type like "_test._tcp"
+     * @param subtypes the service subtypes like "_sub1"
+     * @param port the port number in range [1, 65535]
+     * @param txtMap the map of TXT names and values
+     * @throws TimeoutException if the service isn't registered within timeout
+     */
+    public void addSrpService(
+            String serviceName,
+            String serviceType,
+            List<String> subtypes,
+            int port,
+            Map<String, byte[]> txtMap)
+            throws TimeoutException {
+        StringBuilder fullServiceType = new StringBuilder(serviceType);
+        for (String subtype : subtypes) {
+            fullServiceType.append(",").append(subtype);
+        }
+        executeCommand(
+                "srp client service add %s %s %d %d %d %s",
+                serviceName,
+                fullServiceType,
+                port,
+                0 /* priority */,
+                0 /* weight */,
+                txtMapToHexString(txtMap));
+        waitFor(() -> isSrpServiceRegistered(serviceName, serviceType), SERVICE_DISCOVERY_TIMEOUT);
+    }
+
+    /**
+     * Removes an SRP service for the SRP client.
+     *
+     * @param serviceName the service name like "MyService"
+     * @param serviceType the service type like "_test._tcp"
+     * @param notifyServer whether to notify SRP server about the removal
+     */
+    public void removeSrpService(String serviceName, String serviceType, boolean notifyServer) {
+        String verb = notifyServer ? "remove" : "clear";
+        executeCommand("srp client service %s %s %s", verb, serviceName, serviceType);
+    }
+
+    /**
+     * Updates an existing SRP service for the SRP client.
+     *
+     * <p>This is essentially a 'remove' and an 'add' on the SRP client's side.
+     *
+     * @param serviceName the service name like "MyService"
+     * @param serviceType the service type like "_test._tcp"
+     * @param subtypes the service subtypes like "_sub1"
+     * @param port the port number in range [1, 65535]
+     * @param txtMap the map of TXT names and values
+     * @throws TimeoutException if the service isn't updated within timeout
+     */
+    public void updateSrpService(
+            String serviceName,
+            String serviceType,
+            List<String> subtypes,
+            int port,
+            Map<String, byte[]> txtMap)
+            throws TimeoutException {
+        removeSrpService(serviceName, serviceType, false /* notifyServer */);
+        addSrpService(serviceName, serviceType, subtypes, port, txtMap);
+    }
+
+    /** Checks if an SRP service is registered. */
+    public boolean isSrpServiceRegistered(String serviceName, String serviceType) {
+        List<String> lines = executeCommand("srp client service");
+        for (String line : lines) {
+            if (line.contains(serviceName) && line.contains(serviceType)) {
+                return line.contains("Registered");
+            }
+        }
+        return false;
+    }
+
+    /** Checks if an SRP host is registered. */
+    public boolean isSrpHostRegistered() {
+        List<String> lines = executeCommand("srp client host");
+        for (String line : lines) {
+            return line.contains("Registered");
+        }
+        return false;
+    }
+
+    /** Sets the DNS server address. */
+    public void setDnsServerAddress(String address) {
+        executeCommand("dns config " + address);
+    }
+
+    /** Returns the first browsed service instance of {@code serviceType}. */
+    public NsdServiceInfo browseService(String serviceType) {
+        // CLI output:
+        // DNS browse response for _testservice._tcp.default.service.arpa.
+        // test-service
+        //    Port:12345, Priority:0, Weight:0, TTL:10
+        //    Host:testhost.default.service.arpa.
+        //    HostAddress:2001:0:0:0:0:0:0:1 TTL:10
+        //    TXT:[key1=0102, key2=03] TTL:10
+
+        List<String> lines = executeCommand("dns browse " + serviceType);
+        NsdServiceInfo info = new NsdServiceInfo();
+        info.setServiceName(lines.get(1));
+        info.setServiceType(serviceType);
+        info.setPort(DnsServiceCliOutputParser.parsePort(lines.get(2)));
+        info.setHostname(DnsServiceCliOutputParser.parseHostname(lines.get(3)));
+        info.setHostAddresses(List.of(DnsServiceCliOutputParser.parseHostAddress(lines.get(4))));
+        DnsServiceCliOutputParser.parseTxtIntoServiceInfo(lines.get(5), info);
+
+        return info;
+    }
+
+    /** Returns the resolved service instance. */
+    public NsdServiceInfo resolveService(String serviceName, String serviceType) {
+        // CLI output:
+        // DNS service resolution response for test-service for service
+        // _test._tcp.default.service.arpa.
+        // Port:12345, Priority:0, Weight:0, TTL:10
+        // Host:Android.default.service.arpa.
+        // HostAddress:2001:0:0:0:0:0:0:1 TTL:10
+        // TXT:[key1=0102, key2=03] TTL:10
+
+        List<String> lines = executeCommand("dns service %s %s", serviceName, serviceType);
+        NsdServiceInfo info = new NsdServiceInfo();
+        info.setServiceName(serviceName);
+        info.setServiceType(serviceType);
+        info.setPort(DnsServiceCliOutputParser.parsePort(lines.get(1)));
+        info.setHostname(DnsServiceCliOutputParser.parseHostname(lines.get(2)));
+        info.setHostAddresses(List.of(DnsServiceCliOutputParser.parseHostAddress(lines.get(3))));
+        DnsServiceCliOutputParser.parseTxtIntoServiceInfo(lines.get(4), info);
+
+        return info;
+    }
+
     /** Runs the "factoryreset" command on the device. */
     public void factoryReset() {
         try {
@@ -223,7 +416,50 @@
         executeCommand("ipmaddr add " + address.getHostAddress());
     }
 
-    public void ping(Inet6Address address, Inet6Address source, int size, int count) {
+    public void ping(Inet6Address address, Inet6Address source) {
+        ping(
+                address,
+                source,
+                PING_SIZE,
+                1 /* count */,
+                PING_INTERVAL,
+                HOP_LIMIT,
+                PING_TIMEOUT_0_1_SECOND);
+    }
+
+    public void ping(Inet6Address address) {
+        ping(
+                address,
+                null,
+                PING_SIZE,
+                1 /* count */,
+                PING_INTERVAL,
+                HOP_LIMIT,
+                PING_TIMEOUT_0_1_SECOND);
+    }
+
+    /** Returns the number of ping reply packets received. */
+    public int ping(Inet6Address address, int count) {
+        List<String> output =
+                ping(
+                        address,
+                        null,
+                        PING_SIZE,
+                        count,
+                        PING_INTERVAL,
+                        HOP_LIMIT,
+                        PING_TIMEOUT_1_SECOND);
+        return getReceivedPacketsCount(output);
+    }
+
+    private List<String> ping(
+            Inet6Address address,
+            Inet6Address source,
+            int size,
+            int count,
+            int interval,
+            int hopLimit,
+            float timeout) {
         String cmd =
                 "ping"
                         + ((source == null) ? "" : (" -I " + source.getHostAddress()))
@@ -232,12 +468,33 @@
                         + " "
                         + size
                         + " "
-                        + count;
-        executeCommand(cmd);
+                        + count
+                        + " "
+                        + interval
+                        + " "
+                        + hopLimit
+                        + " "
+                        + timeout;
+        return executeCommand(cmd);
     }
 
-    public void ping(Inet6Address address) {
-        ping(address, null, 100 /* size */, 1 /* count */);
+    private int getReceivedPacketsCount(List<String> stringList) {
+        Pattern pattern = Pattern.compile("([\\d]+) packets received");
+
+        for (String message : stringList) {
+            Matcher matcher = pattern.matcher(message);
+            if (matcher.find()) {
+                String packetCountStr = matcher.group(1);
+                return Integer.parseInt(packetCountStr);
+            }
+        }
+        // No match found
+        return -1;
+    }
+
+    @FormatMethod
+    private List<String> executeCommand(String commandFormat, Object... args) {
+        return executeCommand(String.format(commandFormat, args));
     }
 
     private List<String> executeCommand(String command) {
@@ -256,15 +513,32 @@
         }
     }
 
+    private String readLine() throws IOException {
+        final CompletableFuture<String> future = new CompletableFuture<>();
+        mReaderHandler.post(
+                () -> {
+                    try {
+                        future.complete(mReader.readLine());
+                    } catch (IOException e) {
+                        future.completeExceptionally(e);
+                    }
+                });
+        try {
+            return future.get(READ_LINE_TIMEOUT_SECONDS, SECONDS);
+        } catch (InterruptedException | ExecutionException | TimeoutException e) {
+            throw new IOException("Failed to read a line from ot-cli-ftd");
+        }
+    }
+
     private List<String> readUntilDone() throws IOException {
         ArrayList<String> result = new ArrayList<>();
         String line;
-        while ((line = mReader.readLine()) != null) {
+        while ((line = readLine()) != null) {
             if (line.equals("Done")) {
                 break;
             }
-            if (line.startsWith("Error:")) {
-                fail("ot-cli-ftd reported an error: " + line);
+            if (line.startsWith("Error")) {
+                throw new IOException("ot-cli-ftd reported an error: " + line);
             }
             if (!line.startsWith("> ")) {
                 result.add(line);
@@ -272,4 +546,68 @@
         }
         return result;
     }
+
+    private static String txtMapToHexString(Map<String, byte[]> txtMap) {
+        if (txtMap == null) {
+            return "";
+        }
+        StringBuilder sb = new StringBuilder();
+        for (Map.Entry<String, byte[]> entry : txtMap.entrySet()) {
+            int length = entry.getKey().length() + entry.getValue().length + 1;
+            sb.append(String.format("%02x", length));
+            sb.append(toHexString(entry.getKey()));
+            sb.append(toHexString("="));
+            sb.append(toHexString(entry.getValue()));
+        }
+        return sb.toString();
+    }
+
+    private static String toHexString(String s) {
+        return toHexString(s.getBytes(StandardCharsets.UTF_8));
+    }
+
+    private static String toHexString(byte[] bytes) {
+        return base16().encode(bytes);
+    }
+
+    private static final class DnsServiceCliOutputParser {
+        /** Returns the first match in the input of a given regex pattern. */
+        private static Matcher firstMatchOf(String input, String regex) {
+            Matcher matcher = Pattern.compile(regex).matcher(input);
+            matcher.find();
+            return matcher;
+        }
+
+        // Example: "Port:12345"
+        private static int parsePort(String line) {
+            return Integer.parseInt(firstMatchOf(line, "Port:(\\d+)").group(1));
+        }
+
+        // Example: "Host:Android.default.service.arpa."
+        private static String parseHostname(String line) {
+            return firstMatchOf(line, "Host:(.+)").group(1);
+        }
+
+        // Example: "HostAddress:2001:0:0:0:0:0:0:1"
+        private static InetAddress parseHostAddress(String line) {
+            return InetAddresses.parseNumericAddress(
+                    firstMatchOf(line, "HostAddress:([^ ]+)").group(1));
+        }
+
+        // Example: "TXT:[key1=0102, key2=03]"
+        private static void parseTxtIntoServiceInfo(String line, NsdServiceInfo serviceInfo) {
+            String txtString = firstMatchOf(line, "TXT:\\[([^\\]]+)\\]").group(1);
+            for (String txtEntry : txtString.split(",")) {
+                String[] nameAndValue = txtEntry.trim().split("=");
+                String name = nameAndValue[0];
+                String value = nameAndValue[1];
+                byte[] bytes = new byte[value.length() / 2];
+                for (int i = 0; i < value.length(); i += 2) {
+                    byte b = (byte) ((value.charAt(i) - '0') << 4 | (value.charAt(i + 1) - '0'));
+                    bytes[i / 2] = b;
+                }
+                serviceInfo.setAttribute(name, bytes);
+            }
+        }
+    }
 }
diff --git a/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.java b/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.java
index 74251a6..ada46c8 100644
--- a/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.java
+++ b/thread/tests/integration/src/android/net/thread/utils/IntegrationTestUtils.java
@@ -15,6 +15,7 @@
  */
 package android.net.thread.utils;
 
+import static android.net.NetworkCapabilities.NET_CAPABILITY_LOCAL_NETWORK;
 import static android.system.OsConstants.IPPROTO_ICMPV6;
 
 import static com.android.compatibility.common.util.SystemUtil.runShellCommandOrThrow;
@@ -23,11 +24,25 @@
 
 import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
 
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import android.net.ConnectivityManager;
+import android.net.InetAddresses;
+import android.net.LinkAddress;
+import android.net.Network;
+import android.net.NetworkCapabilities;
+import android.net.NetworkRequest;
 import android.net.TestNetworkInterface;
+import android.net.nsd.NsdManager;
+import android.net.nsd.NsdServiceInfo;
 import android.net.thread.ThreadNetworkController;
+import android.os.Build;
 import android.os.Handler;
 import android.os.SystemClock;
-import android.os.SystemProperties;
+
+import androidx.annotation.NonNull;
+import androidx.test.core.app.ApplicationProvider;
 
 import com.android.net.module.util.Struct;
 import com.android.net.module.util.structs.Icmpv6Header;
@@ -51,6 +66,7 @@
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
@@ -66,15 +82,10 @@
     public static final Duration JOIN_TIMEOUT = Duration.ofSeconds(30);
     public static final Duration LEAVE_TIMEOUT = Duration.ofSeconds(2);
     public static final Duration CALLBACK_TIMEOUT = Duration.ofSeconds(1);
+    public static final Duration SERVICE_DISCOVERY_TIMEOUT = Duration.ofSeconds(20);
 
     private IntegrationTestUtils() {}
 
-    /** Returns whether the device supports simulated Thread radio. */
-    public static boolean isSimulatedThreadRadioSupported() {
-        // The integration test uses SIMULATION Thread radio so that it only supports CuttleFish.
-        return SystemProperties.get("ro.product.model").startsWith("Cuttlefish");
-    }
-
     /**
      * Waits for the given {@link Supplier} to be true until given timeout.
      *
@@ -84,7 +95,7 @@
      */
     public static void waitFor(Supplier<Boolean> condition, Duration timeout)
             throws TimeoutException {
-        final long intervalMills = 1000;
+        final long intervalMills = 500;
         final long timeoutMills = timeout.toMillis();
 
         for (long i = 0; i < timeoutMills; i += intervalMills) {
@@ -289,4 +300,175 @@
         }
         return false;
     }
+
+    public static List<LinkAddress> getIpv6LinkAddresses(String interfaceName) {
+        List<LinkAddress> addresses = new ArrayList<>();
+        final String cmd = " ip -6 addr show dev " + interfaceName;
+        final String output = runShellCommandOrThrow(cmd);
+
+        for (final String line : output.split("\\n")) {
+            if (line.contains("inet6")) {
+                addresses.add(parseAddressLine(line));
+            }
+        }
+
+        return addresses;
+    }
+
+    /** Return the first discovered service of {@code serviceType}. */
+    public static NsdServiceInfo discoverService(NsdManager nsdManager, String serviceType)
+            throws Exception {
+        CompletableFuture<NsdServiceInfo> serviceInfoFuture = new CompletableFuture<>();
+        NsdManager.DiscoveryListener listener =
+                new DefaultDiscoveryListener() {
+                    @Override
+                    public void onServiceFound(NsdServiceInfo serviceInfo) {
+                        serviceInfoFuture.complete(serviceInfo);
+                    }
+                };
+        nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, listener);
+        try {
+            serviceInfoFuture.get(SERVICE_DISCOVERY_TIMEOUT.toMillis(), MILLISECONDS);
+        } finally {
+            nsdManager.stopServiceDiscovery(listener);
+        }
+
+        return serviceInfoFuture.get();
+    }
+
+    /**
+     * Returns the {@link NsdServiceInfo} when a service instance of {@code serviceType} gets lost.
+     */
+    public static NsdManager.DiscoveryListener discoverForServiceLost(
+            NsdManager nsdManager,
+            String serviceType,
+            CompletableFuture<NsdServiceInfo> serviceInfoFuture) {
+        NsdManager.DiscoveryListener listener =
+                new DefaultDiscoveryListener() {
+                    @Override
+                    public void onServiceLost(NsdServiceInfo serviceInfo) {
+                        serviceInfoFuture.complete(serviceInfo);
+                    }
+                };
+        nsdManager.discoverServices(serviceType, NsdManager.PROTOCOL_DNS_SD, listener);
+        return listener;
+    }
+
+    /** Resolves the service. */
+    public static NsdServiceInfo resolveService(NsdManager nsdManager, NsdServiceInfo serviceInfo)
+            throws Exception {
+        return resolveServiceUntil(nsdManager, serviceInfo, s -> true);
+    }
+
+    /** Returns the first resolved service that satisfies the {@code predicate}. */
+    public static NsdServiceInfo resolveServiceUntil(
+            NsdManager nsdManager, NsdServiceInfo serviceInfo, Predicate<NsdServiceInfo> predicate)
+            throws Exception {
+        CompletableFuture<NsdServiceInfo> resolvedServiceInfoFuture = new CompletableFuture<>();
+        NsdManager.ServiceInfoCallback callback =
+                new DefaultServiceInfoCallback() {
+                    @Override
+                    public void onServiceUpdated(@NonNull NsdServiceInfo serviceInfo) {
+                        if (predicate.test(serviceInfo)) {
+                            resolvedServiceInfoFuture.complete(serviceInfo);
+                        }
+                    }
+                };
+        nsdManager.registerServiceInfoCallback(serviceInfo, directExecutor(), callback);
+        try {
+            return resolvedServiceInfoFuture.get(
+                    SERVICE_DISCOVERY_TIMEOUT.toMillis(), MILLISECONDS);
+        } finally {
+            nsdManager.unregisterServiceInfoCallback(callback);
+        }
+    }
+
+    public static String getPrefixesFromNetData(String netData) {
+        int startIdx = netData.indexOf("Prefixes:");
+        int endIdx = netData.indexOf("Routes:");
+        return netData.substring(startIdx, endIdx);
+    }
+
+    public static Network getThreadNetwork(Duration timeout) throws Exception {
+        CompletableFuture<Network> networkFuture = new CompletableFuture<>();
+        ConnectivityManager cm =
+                ApplicationProvider.getApplicationContext()
+                        .getSystemService(ConnectivityManager.class);
+        NetworkRequest.Builder networkRequestBuilder =
+                new NetworkRequest.Builder().addTransportType(NetworkCapabilities.TRANSPORT_THREAD);
+        // Before V, we need to explicitly set `NET_CAPABILITY_LOCAL_NETWORK` capability to request
+        // a Thread network.
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            networkRequestBuilder.addCapability(NET_CAPABILITY_LOCAL_NETWORK);
+        }
+        NetworkRequest networkRequest = networkRequestBuilder.build();
+        ConnectivityManager.NetworkCallback networkCallback =
+                new ConnectivityManager.NetworkCallback() {
+                    @Override
+                    public void onAvailable(Network network) {
+                        networkFuture.complete(network);
+                    }
+                };
+        cm.registerNetworkCallback(networkRequest, networkCallback);
+        return networkFuture.get(timeout.toSeconds(), SECONDS);
+    }
+
+    private static class DefaultDiscoveryListener implements NsdManager.DiscoveryListener {
+        @Override
+        public void onStartDiscoveryFailed(String serviceType, int errorCode) {}
+
+        @Override
+        public void onStopDiscoveryFailed(String serviceType, int errorCode) {}
+
+        @Override
+        public void onDiscoveryStarted(String serviceType) {}
+
+        @Override
+        public void onDiscoveryStopped(String serviceType) {}
+
+        @Override
+        public void onServiceFound(NsdServiceInfo serviceInfo) {}
+
+        @Override
+        public void onServiceLost(NsdServiceInfo serviceInfo) {}
+    }
+
+    private static class DefaultServiceInfoCallback implements NsdManager.ServiceInfoCallback {
+        @Override
+        public void onServiceInfoCallbackRegistrationFailed(int errorCode) {}
+
+        @Override
+        public void onServiceUpdated(@NonNull NsdServiceInfo serviceInfo) {}
+
+        @Override
+        public void onServiceLost() {}
+
+        @Override
+        public void onServiceInfoCallbackUnregistered() {}
+    }
+
+    /**
+     * Parses a line of output from "ip -6 addr show" into a {@link LinkAddress}.
+     *
+     * <p>Example line: "inet6 2001:db8:1:1::1/64 scope global deprecated"
+     */
+    private static LinkAddress parseAddressLine(String line) {
+        String[] parts = line.trim().split("\\s+");
+        String addressString = parts[1];
+        String[] pieces = addressString.split("/", 2);
+        int prefixLength = Integer.parseInt(pieces[1]);
+        final InetAddress address = InetAddresses.parseNumericAddress(pieces[0]);
+        long deprecationTimeMillis =
+                line.contains("deprecated")
+                        ? SystemClock.elapsedRealtime()
+                        : LinkAddress.LIFETIME_PERMANENT;
+
+        return new LinkAddress(
+                address,
+                prefixLength,
+                0 /* flags */,
+                0 /* scope */,
+                deprecationTimeMillis,
+                LinkAddress.LIFETIME_PERMANENT /* expirationTime */);
+    }
 }
diff --git a/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java b/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
index 4a06fe8..b3175fd 100644
--- a/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
+++ b/thread/tests/integration/src/android/net/thread/utils/OtDaemonController.java
@@ -16,13 +16,16 @@
 
 package android.net.thread.utils;
 
+import android.annotation.Nullable;
 import android.net.InetAddresses;
+import android.net.IpPrefix;
 import android.os.SystemClock;
 
 import com.android.compatibility.common.util.SystemUtil;
 
 import java.net.Inet6Address;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -53,16 +56,68 @@
 
     /** Returns the list of IPv6 addresses on ot-daemon. */
     public List<Inet6Address> getAddresses() {
-        String output = executeCommand("ipaddr");
-        return Arrays.asList(output.split("\n")).stream()
-                .map(String::trim)
-                .filter(str -> !str.equals("Done"))
+        return executeCommandAndParse("ipaddr").stream()
                 .map(addr -> InetAddresses.parseNumericAddress(addr))
                 .map(inetAddr -> (Inet6Address) inetAddr)
                 .toList();
     }
 
+    /** Returns {@code true} if the Thread interface is up. */
+    public boolean isInterfaceUp() {
+        String output = executeCommand("ifconfig");
+        return output.contains("up");
+    }
+
+    /** Returns the ML-EID of the device. */
+    public Inet6Address getMlEid() {
+        String addressStr = executeCommandAndParse("ipaddr mleid").get(0);
+        return (Inet6Address) InetAddresses.parseNumericAddress(addressStr);
+    }
+
+    /** Returns the country code on ot-daemon. */
+    public String getCountryCode() {
+        return executeCommandAndParse("region").get(0);
+    }
+
+    /**
+     * Returns the list of IPv6 Mesh-Local addresses on ot-daemon.
+     *
+     * <p>The return List can be empty if no Mesh-Local prefix exists.
+     */
+    public List<Inet6Address> getMeshLocalAddresses() {
+        IpPrefix meshLocalPrefix = getMeshLocalPrefix();
+        if (meshLocalPrefix == null) {
+            return Collections.emptyList();
+        }
+        return getAddresses().stream().filter(addr -> meshLocalPrefix.contains(addr)).toList();
+    }
+
+    /**
+     * Returns the Mesh-Local prefix or {@code null} if none exists (e.g. the Active Dataset is not
+     * set).
+     */
+    @Nullable
+    public IpPrefix getMeshLocalPrefix() {
+        List<IpPrefix> prefixes =
+                executeCommandAndParse("prefix meshlocal").stream()
+                        .map(prefix -> new IpPrefix(prefix))
+                        .toList();
+        return prefixes.isEmpty() ? null : prefixes.get(0);
+    }
+
     public String executeCommand(String cmd) {
         return SystemUtil.runShellCommand(OT_CTL + " " + cmd);
     }
+
+    /**
+     * Executes a ot-ctl command and parse the output to a list of strings.
+     *
+     * <p>The trailing "Done" in the command output will be dropped.
+     */
+    public List<String> executeCommandAndParse(String cmd) {
+        return Arrays.asList(executeCommand(cmd).split("\n")).stream()
+                .map(String::trim)
+                .filter(str -> !str.equals("Done"))
+                .toList();
+    }
 }
diff --git a/thread/tests/integration/src/android/net/thread/utils/ThreadNetworkControllerWrapper.java b/thread/tests/integration/src/android/net/thread/utils/ThreadNetworkControllerWrapper.java
new file mode 100644
index 0000000..7e84233
--- /dev/null
+++ b/thread/tests/integration/src/android/net/thread/utils/ThreadNetworkControllerWrapper.java
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.net.thread.utils;
+
+import static android.Manifest.permission.ACCESS_NETWORK_STATE;
+import static android.Manifest.permission.NETWORK_SETTINGS;
+import static android.net.thread.ThreadNetworkManager.PERMISSION_THREAD_NETWORK_PRIVILEGED;
+import static android.net.thread.utils.IntegrationTestUtils.CALLBACK_TIMEOUT;
+
+import static com.android.testutils.TestPermissionUtil.runAsShell;
+
+import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
+
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.net.thread.ActiveOperationalDataset;
+import android.net.thread.ThreadNetworkController;
+import android.net.thread.ThreadNetworkController.StateCallback;
+import android.net.thread.ThreadNetworkException;
+import android.net.thread.ThreadNetworkManager;
+import android.os.OutcomeReceiver;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeoutException;
+
+/** A helper class which provides synchronous API wrappers for {@link ThreadNetworkController}. */
+public final class ThreadNetworkControllerWrapper {
+    public static final Duration JOIN_TIMEOUT = Duration.ofSeconds(10);
+    public static final Duration LEAVE_TIMEOUT = Duration.ofSeconds(2);
+    private static final Duration CALLBACK_TIMEOUT = Duration.ofSeconds(1);
+    private static final Duration SET_ENABLED_TIMEOUT = Duration.ofSeconds(2);
+
+    private final ThreadNetworkController mController;
+
+    /**
+     * Returns a new {@link ThreadNetworkControllerWrapper} instance or {@code null} if Thread
+     * feature is not supported on this device.
+     */
+    @Nullable
+    public static ThreadNetworkControllerWrapper newInstance(Context context) {
+        final ThreadNetworkManager manager = context.getSystemService(ThreadNetworkManager.class);
+        if (manager == null) {
+            return null;
+        }
+        return new ThreadNetworkControllerWrapper(manager.getAllThreadNetworkControllers().get(0));
+    }
+
+    private ThreadNetworkControllerWrapper(ThreadNetworkController controller) {
+        mController = controller;
+    }
+
+    /**
+     * Returns the Thread enabled state.
+     *
+     * <p>The value can be one of {@code ThreadNetworkController#STATE_*}.
+     */
+    public final int getEnabledState()
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Integer> future = new CompletableFuture<>();
+        StateCallback callback =
+                new StateCallback() {
+                    @Override
+                    public void onThreadEnableStateChanged(int enabledState) {
+                        future.complete(enabledState);
+                    }
+
+                    @Override
+                    public void onDeviceRoleChanged(int deviceRole) {}
+                };
+
+        runAsShell(
+                ACCESS_NETWORK_STATE,
+                () -> mController.registerStateCallback(directExecutor(), callback));
+        try {
+            return future.get(CALLBACK_TIMEOUT.toSeconds(), SECONDS);
+        } finally {
+            runAsShell(ACCESS_NETWORK_STATE, () -> mController.unregisterStateCallback(callback));
+        }
+    }
+
+    /**
+     * Returns the Thread device role.
+     *
+     * <p>The value can be one of {@code ThreadNetworkController#DEVICE_ROLE_*}.
+     */
+    public final int getDeviceRole()
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Integer> future = new CompletableFuture<>();
+        StateCallback callback = future::complete;
+
+        runAsShell(
+                ACCESS_NETWORK_STATE,
+                () -> mController.registerStateCallback(directExecutor(), callback));
+        try {
+            return future.get(CALLBACK_TIMEOUT.toSeconds(), SECONDS);
+        } finally {
+            runAsShell(ACCESS_NETWORK_STATE, () -> mController.unregisterStateCallback(callback));
+        }
+    }
+
+    /** An synchronous variant of {@link ThreadNetworkController#setEnabled}. */
+    public void setEnabledAndWait(boolean enabled)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Void> future = new CompletableFuture<>();
+        runAsShell(
+                PERMISSION_THREAD_NETWORK_PRIVILEGED,
+                () ->
+                        mController.setEnabled(
+                                enabled, directExecutor(), newOutcomeReceiver(future)));
+        future.get(SET_ENABLED_TIMEOUT.toSeconds(), SECONDS);
+    }
+
+    /** Joins the given network and wait for this device to become attached. */
+    public void joinAndWait(ActiveOperationalDataset activeDataset)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Void> future = new CompletableFuture<>();
+        runAsShell(
+                PERMISSION_THREAD_NETWORK_PRIVILEGED,
+                () ->
+                        mController.join(
+                                activeDataset, directExecutor(), newOutcomeReceiver(future)));
+        future.get(JOIN_TIMEOUT.toSeconds(), SECONDS);
+    }
+
+    /** An synchronous variant of {@link ThreadNetworkController#leave}. */
+    public void leaveAndWait() throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Void> future = new CompletableFuture<>();
+        runAsShell(
+                PERMISSION_THREAD_NETWORK_PRIVILEGED,
+                () -> mController.leave(directExecutor(), future::complete));
+        future.get(LEAVE_TIMEOUT.toSeconds(), SECONDS);
+    }
+
+    /** Waits for the device role to become {@code deviceRole}. */
+    public int waitForRole(int deviceRole, Duration timeout)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        return waitForRoleAnyOf(List.of(deviceRole), timeout);
+    }
+
+    /** Waits for the device role to become one of the values specified in {@code deviceRoles}. */
+    public int waitForRoleAnyOf(List<Integer> deviceRoles, Duration timeout)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Integer> future = new CompletableFuture<>();
+        ThreadNetworkController.StateCallback callback =
+                newRole -> {
+                    if (deviceRoles.contains(newRole)) {
+                        future.complete(newRole);
+                    }
+                };
+
+        runAsShell(
+                ACCESS_NETWORK_STATE,
+                () -> mController.registerStateCallback(directExecutor(), callback));
+
+        try {
+            return future.get(timeout.toSeconds(), SECONDS);
+        } finally {
+            mController.unregisterStateCallback(callback);
+        }
+    }
+
+    /** An synchronous variant of {@link ThreadNetworkController#setTestNetworkAsUpstream}. */
+    public void setTestNetworkAsUpstreamAndWait(@Nullable String networkInterfaceName)
+            throws InterruptedException, ExecutionException, TimeoutException {
+        CompletableFuture<Void> future = new CompletableFuture<>();
+        runAsShell(
+                PERMISSION_THREAD_NETWORK_PRIVILEGED,
+                NETWORK_SETTINGS,
+                () -> {
+                    mController.setTestNetworkAsUpstream(
+                            networkInterfaceName, directExecutor(), future::complete);
+                });
+        future.get(CALLBACK_TIMEOUT.toSeconds(), SECONDS);
+    }
+
+    private static <V> OutcomeReceiver<V, ThreadNetworkException> newOutcomeReceiver(
+            CompletableFuture<V> future) {
+        return new OutcomeReceiver<V, ThreadNetworkException>() {
+            @Override
+            public void onResult(V result) {
+                future.complete(result);
+            }
+
+            @Override
+            public void onError(ThreadNetworkException e) {
+                future.completeExceptionally(e);
+            }
+        };
+    }
+}
diff --git a/thread/tests/multidevices/Android.bp b/thread/tests/multidevices/Android.bp
new file mode 100644
index 0000000..050caa8
--- /dev/null
+++ b/thread/tests/multidevices/Android.bp
@@ -0,0 +1,43 @@
+//
+// Copyright (C) 2024 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    default_team: "trendy_team_fwk_thread_network",
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+python_test_host {
+    name: "ThreadNetworkMultiDeviceTests",
+    main: "thread_network_multi_device_test.py",
+    srcs: ["thread_network_multi_device_test.py"],
+    test_config: "AndroidTest.xml",
+    libs: [
+        "mobly",
+    ],
+    test_options: {
+        unit_test: false,
+        tags: ["mobly"],
+    },
+    test_suites: [
+        "mts-tethering",
+        "general-tests",
+    ],
+    version: {
+        py3: {
+            embedded_launcher: true,
+        },
+    },
+}
diff --git a/thread/tests/multidevices/AndroidTest.xml b/thread/tests/multidevices/AndroidTest.xml
new file mode 100644
index 0000000..8b2bed3
--- /dev/null
+++ b/thread/tests/multidevices/AndroidTest.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2024 The Android Open Source Project
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+ -->
+
+<configuration description="Config for Thread Multi-device test cases">
+    <option name="config-descriptor:metadata" key="component" value="threadnetwork" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_instant_app" />
+    <option name="config-descriptor:metadata" key="parameter" value="not_multi_abi" />
+    <option name="config-descriptor:metadata" key="parameter" value="secondary_user" />
+    <option name="config-descriptor:metadata" key="mainline-param" value="com.google.android.tethering.apex" />
+
+    <object class="com.android.tradefed.testtype.suite.module.DeviceFeatureModuleController"
+        type="module_controller">
+        <option name="required-feature" value="android.hardware.thread_network" />
+    </object>
+    <object type="module_controller" class="com.android.tradefed.testtype.suite.module.MainlineTestModuleController">
+        <option name="mainline-module-package-name" value="com.google.android.tethering" />
+    </object>
+    <!--
+        Only run tests if the device under test is SDK version 34 (Android 14) or above.
+    -->
+    <object type="module_controller"
+        class="com.android.tradefed.testtype.suite.module.Sdk34ModuleController" />
+
+    <device name="device1">
+        <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer" />
+    </device>
+    <device name="device2">
+        <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer" />
+    </device>
+
+    <test class="com.android.tradefed.testtype.mobly.MoblyBinaryHostTest">
+      <!-- The mobly-par-file-name should match the module name -->
+      <option name="mobly-par-file-name" value="ThreadNetworkMultiDeviceTests" />
+      <!-- Timeout limit in milliseconds for all test cases of the python binary -->
+      <option name="mobly-test-timeout" value="180000" />
+    </test>
+</configuration>
diff --git a/thread/tests/multidevices/thread_network_multi_device_test.py b/thread/tests/multidevices/thread_network_multi_device_test.py
new file mode 100644
index 0000000..652576b
--- /dev/null
+++ b/thread/tests/multidevices/thread_network_multi_device_test.py
@@ -0,0 +1,67 @@
+#  Copyright (C) 2024 The Android Open Source Project
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+# Lint as: python3
+
+import logging
+import time
+
+from mobly import asserts
+from mobly import base_test
+from mobly import test_runner
+from mobly.controllers import android_device
+
+class ThreadNetworkMultiDeviceTest(base_test.BaseTestClass):
+    def setup_class(self):
+        self.node_a, self.node_b = self.register_controller(
+            android_device, min_number=2)
+        self.node_a.adb.shell([
+            'ot-ctl', 'factoryreset',
+        ])
+        self.node_b.adb.shell([
+            'ot-ctl', 'factoryreset',
+        ])
+        time.sleep(1)
+
+    def ot_ctl(self, node, cmd, expect_done=True):
+        args = cmd.split(' ')
+        args = ['ot-ctl'] + args
+        stdout = node.adb.shell(args).decode('utf-8')
+        if expect_done:
+            asserts.assert_in('Done', stdout)
+        return stdout
+
+    def test_b_should_be_able_to_discover_a(self):
+        self.ot_ctl(self.node_a, 'dataset init new')
+        self.ot_ctl(self.node_a, 'dataset commit active')
+        self.ot_ctl(self.node_a, 'ifconfig up')
+        self.ot_ctl(self.node_a, 'thread start')
+        self.ot_ctl(self.node_a, 'state leader')
+        stdout = self.ot_ctl(self.node_a, 'extaddr')
+        extaddr = stdout.splitlines()[0]
+        logging.info('node a extaddr: %s', extaddr)
+        asserts.assert_equal(len(extaddr), 16)
+
+        stdout = self.ot_ctl(self.node_b, 'scan')
+        asserts.assert_in(extaddr, stdout)
+        logging.info('discovered node a')
+
+
+if __name__ == '__main__':
+    # Take test args
+    if '--' in sys.argv:
+        index = sys.argv.index('--')
+        sys.argv = sys.argv[:1] + sys.argv[index + 1:]
+
+    test_runner.main()
diff --git a/thread/tests/unit/Android.bp b/thread/tests/unit/Android.bp
index 3365cd0..9404d1b 100644
--- a/thread/tests/unit/Android.bp
+++ b/thread/tests/unit/Android.bp
@@ -33,6 +33,7 @@
         "mts-tethering",
     ],
     static_libs: [
+        "androidx.test.rules",
         "frameworks-base-testutils",
         "framework-connectivity-pre-jarjar",
         "framework-connectivity-t-pre-jarjar",
diff --git a/thread/tests/unit/AndroidManifest.xml b/thread/tests/unit/AndroidManifest.xml
index ace7c52..8442e80 100644
--- a/thread/tests/unit/AndroidManifest.xml
+++ b/thread/tests/unit/AndroidManifest.xml
@@ -19,6 +19,8 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     package="android.net.thread.unittests">
 
+    <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
+
     <application android:debuggable="true">
         <uses-library android:name="android.test.runner" />
     </application>
diff --git a/thread/tests/unit/AndroidTest.xml b/thread/tests/unit/AndroidTest.xml
index d16e423..58e9bdd 100644
--- a/thread/tests/unit/AndroidTest.xml
+++ b/thread/tests/unit/AndroidTest.xml
@@ -31,6 +31,11 @@
         <option name="mainline-module-package-name" value="com.google.android.tethering" />
     </object>
 
+    <object type="module_controller"
+            class="com.android.tradefed.testtype.suite.module.DeviceFeatureModuleController">
+        <option name="required-feature" value="android.hardware.thread_network" />
+    </object>
+
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="test-file-name" value="ThreadNetworkUnitTests.apk" />
         <option name="check-min-sdk" value="true" />
diff --git a/thread/tests/unit/src/android/net/thread/OperationalDatasetTimestampTest.java b/thread/tests/unit/src/android/net/thread/OperationalDatasetTimestampTest.java
index 2244a89..11c78e3 100644
--- a/thread/tests/unit/src/android/net/thread/OperationalDatasetTimestampTest.java
+++ b/thread/tests/unit/src/android/net/thread/OperationalDatasetTimestampTest.java
@@ -41,6 +41,19 @@
     }
 
     @Test
+    public void fromInstant_authoritativeIsSetAsSpecified() {
+        Instant instant = Instant.now();
+
+        OperationalDatasetTimestamp timestampAuthoritativeFalse =
+                OperationalDatasetTimestamp.fromInstant(instant, false);
+        OperationalDatasetTimestamp timestampAuthoritativeTrue =
+                OperationalDatasetTimestamp.fromInstant(instant, true);
+
+        assertThat(timestampAuthoritativeFalse.isAuthoritativeSource()).isEqualTo(false);
+        assertThat(timestampAuthoritativeTrue.isAuthoritativeSource()).isEqualTo(true);
+    }
+
+    @Test
     public void fromTlvValue_goodValue_success() {
         OperationalDatasetTimestamp timestamp =
                 OperationalDatasetTimestamp.fromTlvValue(base16().decode("FFEEDDCCBBAA9989"));
diff --git a/thread/tests/unit/src/android/net/thread/ThreadNetworkControllerTest.java b/thread/tests/unit/src/android/net/thread/ThreadNetworkControllerTest.java
index 75eb043..ac74372 100644
--- a/thread/tests/unit/src/android/net/thread/ThreadNetworkControllerTest.java
+++ b/thread/tests/unit/src/android/net/thread/ThreadNetworkControllerTest.java
@@ -19,6 +19,7 @@
 import static android.net.thread.ThreadNetworkController.DEVICE_ROLE_CHILD;
 import static android.net.thread.ThreadNetworkException.ERROR_UNAVAILABLE;
 import static android.net.thread.ThreadNetworkException.ERROR_UNSUPPORTED_CHANNEL;
+import static android.net.thread.ThreadNetworkException.ERROR_UNSUPPORTED_OPERATION;
 import static android.os.Process.SYSTEM_UID;
 
 import static com.google.common.io.BaseEncoding.base16;
@@ -33,6 +34,7 @@
 import android.os.Binder;
 import android.os.OutcomeReceiver;
 import android.os.Process;
+import android.util.SparseIntArray;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
@@ -77,6 +79,13 @@
     private static final ActiveOperationalDataset DEFAULT_DATASET =
             ActiveOperationalDataset.fromThreadTlvs(DEFAULT_DATASET_TLVS);
 
+    private static final SparseIntArray DEFAULT_CHANNEL_POWERS =
+            new SparseIntArray() {
+                {
+                    put(20, 32767);
+                }
+            };
+
     @Before
     public void setUp() {
         MockitoAnnotations.initMocks(this);
@@ -111,6 +120,10 @@
         return (IOperationReceiver) invocation.getArguments()[1];
     }
 
+    private static IOperationReceiver getSetChannelMaxPowersReceiver(InvocationOnMock invocation) {
+        return (IOperationReceiver) invocation.getArguments()[1];
+    }
+
     private static IActiveOperationalDatasetReceiver getCreateDatasetReceiver(
             InvocationOnMock invocation) {
         return (IActiveOperationalDatasetReceiver) invocation.getArguments()[1];
@@ -361,6 +374,51 @@
     }
 
     @Test
+    public void setChannelMaxPowers_callbackIsInvokedWithCallingAppIdentity() throws Exception {
+        setBinderUid(SYSTEM_UID);
+
+        AtomicInteger successCallbackUid = new AtomicInteger(0);
+        AtomicInteger errorCallbackUid = new AtomicInteger(0);
+
+        doAnswer(
+                        invoke -> {
+                            getSetChannelMaxPowersReceiver(invoke).onSuccess();
+                            return null;
+                        })
+                .when(mMockService)
+                .setChannelMaxPowers(any(ChannelMaxPower[].class), any(IOperationReceiver.class));
+        mController.setChannelMaxPowers(
+                DEFAULT_CHANNEL_POWERS,
+                Runnable::run,
+                v -> successCallbackUid.set(Binder.getCallingUid()));
+        doAnswer(
+                        invoke -> {
+                            getSetChannelMaxPowersReceiver(invoke)
+                                    .onError(ERROR_UNSUPPORTED_OPERATION, "");
+                            return null;
+                        })
+                .when(mMockService)
+                .setChannelMaxPowers(any(ChannelMaxPower[].class), any(IOperationReceiver.class));
+        mController.setChannelMaxPowers(
+                DEFAULT_CHANNEL_POWERS,
+                Runnable::run,
+                new OutcomeReceiver<>() {
+                    @Override
+                    public void onResult(Void unused) {}
+
+                    @Override
+                    public void onError(ThreadNetworkException e) {
+                        errorCallbackUid.set(Binder.getCallingUid());
+                    }
+                });
+
+        assertThat(successCallbackUid.get()).isNotEqualTo(SYSTEM_UID);
+        assertThat(successCallbackUid.get()).isEqualTo(Process.myUid());
+        assertThat(errorCallbackUid.get()).isNotEqualTo(SYSTEM_UID);
+        assertThat(errorCallbackUid.get()).isEqualTo(Process.myUid());
+    }
+
+    @Test
     public void setTestNetworkAsUpstream_callbackIsInvokedWithCallingAppIdentity()
             throws Exception {
         setBinderUid(SYSTEM_UID);
diff --git a/thread/tests/unit/src/android/net/thread/ThreadNetworkExceptionTest.java b/thread/tests/unit/src/android/net/thread/ThreadNetworkExceptionTest.java
index f62b437..5908c20 100644
--- a/thread/tests/unit/src/android/net/thread/ThreadNetworkExceptionTest.java
+++ b/thread/tests/unit/src/android/net/thread/ThreadNetworkExceptionTest.java
@@ -32,6 +32,6 @@
     public void constructor_tooLargeErrorCode_throwsIllegalArgumentException() throws Exception {
         // TODO (b/323791003): move this test case to cts/ThreadNetworkExceptionTest when mainline
         // CTS is ready.
-        assertThrows(IllegalArgumentException.class, () -> new ThreadNetworkException(13, "13"));
+        assertThrows(IllegalArgumentException.class, () -> new ThreadNetworkException(14, "14"));
     }
 }
diff --git a/thread/tests/unit/src/com/android/server/thread/NsdPublisherTest.java b/thread/tests/unit/src/com/android/server/thread/NsdPublisherTest.java
index 8aea0a3..b32986d 100644
--- a/thread/tests/unit/src/com/android/server/thread/NsdPublisherTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/NsdPublisherTest.java
@@ -16,43 +16,73 @@
 
 package com.android.server.thread;
 
+import static android.net.DnsResolver.ERROR_SYSTEM;
 import static android.net.nsd.NsdManager.FAILURE_INTERNAL_ERROR;
 import static android.net.nsd.NsdManager.PROTOCOL_DNS_SD;
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.hamcrest.MockitoHamcrest.argThat;
 
+import android.net.DnsResolver;
+import android.net.InetAddresses;
+import android.net.Network;
+import android.net.nsd.DiscoveryRequest;
 import android.net.nsd.NsdManager;
 import android.net.nsd.NsdServiceInfo;
+import android.os.CancellationSignal;
 import android.os.Handler;
 import android.os.test.TestLooper;
 
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.filters.SmallTest;
+
 import com.android.server.thread.openthread.DnsTxtAttribute;
+import com.android.server.thread.openthread.INsdDiscoverServiceCallback;
+import com.android.server.thread.openthread.INsdResolveHostCallback;
+import com.android.server.thread.openthread.INsdResolveServiceCallback;
 import com.android.server.thread.openthread.INsdStatusReceiver;
 
 import org.junit.Before;
 import org.junit.Test;
+import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import java.net.InetAddress;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 import java.util.concurrent.Executor;
 
 /** Unit tests for {@link NsdPublisher}. */
+@SmallTest
+@RunWith(AndroidJUnit4.class)
 public final class NsdPublisherTest {
+    private static final DnsTxtAttribute TEST_TXT_ENTRY_1 =
+            new DnsTxtAttribute("key1", new byte[] {0x01, 0x02});
+    private static final DnsTxtAttribute TEST_TXT_ENTRY_2 =
+            new DnsTxtAttribute("key2", new byte[] {0x03});
+
     @Mock private NsdManager mMockNsdManager;
+    @Mock private DnsResolver mMockDnsResolver;
 
     @Mock private INsdStatusReceiver mRegistrationReceiver;
     @Mock private INsdStatusReceiver mUnregistrationReceiver;
+    @Mock private INsdDiscoverServiceCallback mDiscoverServiceCallback;
+    @Mock private INsdResolveServiceCallback mResolveServiceCallback;
+    @Mock private INsdResolveHostCallback mResolveHostCallback;
+    @Mock private Network mNetwork;
 
     private TestLooper mTestLooper;
     private NsdPublisher mNsdPublisher;
@@ -66,19 +96,15 @@
     public void registerService_nsdManagerSucceeds_serviceRegistrationSucceeds() throws Exception {
         prepareTest();
 
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
-
         mNsdPublisher.registerService(
                 null,
                 "MyService",
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
-
         mTestLooper.dispatchAll();
 
         ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
@@ -105,11 +131,10 @@
         assertThat(actualServiceInfo.getSubtypes()).isEqualTo(Set.of("_subtype1", "_subtype2"));
         assertThat(actualServiceInfo.getPort()).isEqualTo(12345);
         assertThat(actualServiceInfo.getAttributes().size()).isEqualTo(2);
-        assertThat(actualServiceInfo.getAttributes().get("key1"))
-                .isEqualTo(new byte[] {(byte) 0x01, (byte) 0x02});
-        assertThat(actualServiceInfo.getAttributes().get("key2"))
-                .isEqualTo(new byte[] {(byte) 0x03});
-
+        assertThat(actualServiceInfo.getAttributes().get(TEST_TXT_ENTRY_1.name))
+                .isEqualTo(TEST_TXT_ENTRY_1.value);
+        assertThat(actualServiceInfo.getAttributes().get(TEST_TXT_ENTRY_2.name))
+                .isEqualTo(TEST_TXT_ENTRY_2.value);
         verify(mRegistrationReceiver, times(1)).onSuccess();
     }
 
@@ -117,19 +142,15 @@
     public void registerService_nsdManagerFails_serviceRegistrationFails() throws Exception {
         prepareTest();
 
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
-
         mNsdPublisher.registerService(
                 null,
                 "MyService",
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
-
         mTestLooper.dispatchAll();
 
         ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
@@ -156,21 +177,16 @@
         assertThat(actualServiceInfo.getSubtypes()).isEqualTo(Set.of("_subtype1", "_subtype2"));
         assertThat(actualServiceInfo.getPort()).isEqualTo(12345);
         assertThat(actualServiceInfo.getAttributes().size()).isEqualTo(2);
-        assertThat(actualServiceInfo.getAttributes().get("key1"))
-                .isEqualTo(new byte[] {(byte) 0x01, (byte) 0x02});
-        assertThat(actualServiceInfo.getAttributes().get("key2"))
-                .isEqualTo(new byte[] {(byte) 0x03});
-
+        assertThat(actualServiceInfo.getAttributes().get(TEST_TXT_ENTRY_1.name))
+                .isEqualTo(TEST_TXT_ENTRY_1.value);
+        assertThat(actualServiceInfo.getAttributes().get(TEST_TXT_ENTRY_2.name))
+                .isEqualTo(TEST_TXT_ENTRY_2.value);
         verify(mRegistrationReceiver, times(1)).onError(FAILURE_INTERNAL_ERROR);
     }
 
     @Test
     public void registerService_nsdManagerThrows_serviceRegistrationFails() throws Exception {
         prepareTest();
-
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
-
         doThrow(new IllegalArgumentException("NsdManager fails"))
                 .when(mMockNsdManager)
                 .registerService(any(), anyInt(), any(Executor.class), any());
@@ -181,7 +197,7 @@
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
         mTestLooper.dispatchAll();
@@ -194,16 +210,13 @@
             throws Exception {
         prepareTest();
 
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
-
         mNsdPublisher.registerService(
                 null,
                 "MyService",
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
 
@@ -239,16 +252,13 @@
     public void unregisterService_nsdManagerFails_serviceUnregistrationFails() throws Exception {
         prepareTest();
 
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
-
         mNsdPublisher.registerService(
                 null,
                 "MyService",
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
 
@@ -282,12 +292,425 @@
     }
 
     @Test
-    public void onOtDaemonDied_unregisterAll() {
+    public void registerHost_nsdManagerSucceeds_serviceRegistrationSucceeds() throws Exception {
         prepareTest();
 
-        DnsTxtAttribute txt1 = makeTxtAttribute("key1", List.of(0x01, 0x02));
-        DnsTxtAttribute txt2 = makeTxtAttribute("key2", List.of(0x03));
+        mNsdPublisher.registerHost(
+                "MyHost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                16 /* listenerId */);
 
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.RegistrationListener> actualRegistrationListenerCaptor =
+                ArgumentCaptor.forClass(NsdManager.RegistrationListener.class);
+
+        verify(mMockNsdManager, times(1))
+                .registerService(
+                        actualServiceInfoCaptor.capture(),
+                        eq(PROTOCOL_DNS_SD),
+                        any(),
+                        actualRegistrationListenerCaptor.capture());
+
+        NsdServiceInfo actualServiceInfo = actualServiceInfoCaptor.getValue();
+        NsdManager.RegistrationListener actualRegistrationListener =
+                actualRegistrationListenerCaptor.getValue();
+
+        actualRegistrationListener.onServiceRegistered(actualServiceInfo);
+        mTestLooper.dispatchAll();
+
+        assertThat(actualServiceInfo.getServiceName()).isNull();
+        assertThat(actualServiceInfo.getServiceType()).isNull();
+        assertThat(actualServiceInfo.getSubtypes()).isEmpty();
+        assertThat(actualServiceInfo.getPort()).isEqualTo(0);
+        assertThat(actualServiceInfo.getAttributes()).isEmpty();
+        assertThat(actualServiceInfo.getHostname()).isEqualTo("MyHost");
+        assertThat(actualServiceInfo.getHostAddresses())
+                .isEqualTo(makeAddresses("2001:db8::1", "2001:db8::2", "2001:db8::3"));
+
+        verify(mRegistrationReceiver, times(1)).onSuccess();
+    }
+
+    @Test
+    public void registerHost_nsdManagerFails_serviceRegistrationFails() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.registerHost(
+                "MyHost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                16 /* listenerId */);
+
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.RegistrationListener> actualRegistrationListenerCaptor =
+                ArgumentCaptor.forClass(NsdManager.RegistrationListener.class);
+
+        verify(mMockNsdManager, times(1))
+                .registerService(
+                        actualServiceInfoCaptor.capture(),
+                        eq(PROTOCOL_DNS_SD),
+                        any(),
+                        actualRegistrationListenerCaptor.capture());
+        mTestLooper.dispatchAll();
+
+        NsdServiceInfo actualServiceInfo = actualServiceInfoCaptor.getValue();
+        NsdManager.RegistrationListener actualRegistrationListener =
+                actualRegistrationListenerCaptor.getValue();
+
+        actualRegistrationListener.onRegistrationFailed(actualServiceInfo, FAILURE_INTERNAL_ERROR);
+        mTestLooper.dispatchAll();
+
+        assertThat(actualServiceInfo.getServiceName()).isNull();
+        assertThat(actualServiceInfo.getServiceType()).isNull();
+        assertThat(actualServiceInfo.getSubtypes()).isEmpty();
+        assertThat(actualServiceInfo.getPort()).isEqualTo(0);
+        assertThat(actualServiceInfo.getAttributes()).isEmpty();
+        assertThat(actualServiceInfo.getHostname()).isEqualTo("MyHost");
+        assertThat(actualServiceInfo.getHostAddresses())
+                .isEqualTo(makeAddresses("2001:db8::1", "2001:db8::2", "2001:db8::3"));
+
+        verify(mRegistrationReceiver, times(1)).onError(FAILURE_INTERNAL_ERROR);
+    }
+
+    @Test
+    public void registerHost_nsdManagerThrows_serviceRegistrationFails() throws Exception {
+        prepareTest();
+
+        doThrow(new IllegalArgumentException("NsdManager fails"))
+                .when(mMockNsdManager)
+                .registerService(any(), anyInt(), any(Executor.class), any());
+
+        mNsdPublisher.registerHost(
+                "MyHost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                16 /* listenerId */);
+
+        mTestLooper.dispatchAll();
+
+        verify(mRegistrationReceiver, times(1)).onError(FAILURE_INTERNAL_ERROR);
+    }
+
+    @Test
+    public void unregisterHost_nsdManagerSucceeds_serviceUnregistrationSucceeds() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.registerHost(
+                "MyHost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                16 /* listenerId */);
+
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.RegistrationListener> actualRegistrationListenerCaptor =
+                ArgumentCaptor.forClass(NsdManager.RegistrationListener.class);
+
+        verify(mMockNsdManager, times(1))
+                .registerService(
+                        actualServiceInfoCaptor.capture(),
+                        eq(PROTOCOL_DNS_SD),
+                        any(Executor.class),
+                        actualRegistrationListenerCaptor.capture());
+
+        NsdServiceInfo actualServiceInfo = actualServiceInfoCaptor.getValue();
+        NsdManager.RegistrationListener actualRegistrationListener =
+                actualRegistrationListenerCaptor.getValue();
+
+        actualRegistrationListener.onServiceRegistered(actualServiceInfo);
+        mNsdPublisher.unregister(mUnregistrationReceiver, 16 /* listenerId */);
+        mTestLooper.dispatchAll();
+        verify(mMockNsdManager, times(1)).unregisterService(actualRegistrationListener);
+
+        actualRegistrationListener.onServiceUnregistered(actualServiceInfo);
+        mTestLooper.dispatchAll();
+        verify(mUnregistrationReceiver, times(1)).onSuccess();
+    }
+
+    @Test
+    public void unregisterHost_nsdManagerFails_serviceUnregistrationFails() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.registerHost(
+                "MyHost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                16 /* listenerId */);
+
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.RegistrationListener> actualRegistrationListenerCaptor =
+                ArgumentCaptor.forClass(NsdManager.RegistrationListener.class);
+
+        verify(mMockNsdManager, times(1))
+                .registerService(
+                        actualServiceInfoCaptor.capture(),
+                        eq(PROTOCOL_DNS_SD),
+                        any(Executor.class),
+                        actualRegistrationListenerCaptor.capture());
+
+        NsdServiceInfo actualServiceInfo = actualServiceInfoCaptor.getValue();
+        NsdManager.RegistrationListener actualRegistrationListener =
+                actualRegistrationListenerCaptor.getValue();
+
+        actualRegistrationListener.onServiceRegistered(actualServiceInfo);
+        mNsdPublisher.unregister(mUnregistrationReceiver, 16 /* listenerId */);
+        mTestLooper.dispatchAll();
+        verify(mMockNsdManager, times(1)).unregisterService(actualRegistrationListener);
+
+        actualRegistrationListener.onUnregistrationFailed(
+                actualServiceInfo, FAILURE_INTERNAL_ERROR);
+        mTestLooper.dispatchAll();
+        verify(mUnregistrationReceiver, times(1)).onError(0);
+    }
+
+    @Test
+    public void discoverService_serviceDiscovered() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.discoverService("_test._tcp", mDiscoverServiceCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<NsdManager.DiscoveryListener> discoveryListenerArgumentCaptor =
+                ArgumentCaptor.forClass(NsdManager.DiscoveryListener.class);
+        verify(mMockNsdManager, times(1))
+                .discoverServices(
+                        eq(new DiscoveryRequest.Builder(PROTOCOL_DNS_SD, "_test._tcp").build()),
+                        any(Executor.class),
+                        discoveryListenerArgumentCaptor.capture());
+        NsdManager.DiscoveryListener actualDiscoveryListener =
+                discoveryListenerArgumentCaptor.getValue();
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName("test");
+        serviceInfo.setServiceType(null);
+        actualDiscoveryListener.onServiceFound(serviceInfo);
+        mTestLooper.dispatchAll();
+
+        verify(mDiscoverServiceCallback, times(1))
+                .onServiceDiscovered("test", "_test._tcp", true /* isFound */);
+    }
+
+    @Test
+    public void discoverService_serviceLost() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.discoverService("_test._tcp", mDiscoverServiceCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<NsdManager.DiscoveryListener> discoveryListenerArgumentCaptor =
+                ArgumentCaptor.forClass(NsdManager.DiscoveryListener.class);
+        verify(mMockNsdManager, times(1))
+                .discoverServices(
+                        eq(new DiscoveryRequest.Builder(PROTOCOL_DNS_SD, "_test._tcp").build()),
+                        any(Executor.class),
+                        discoveryListenerArgumentCaptor.capture());
+        NsdManager.DiscoveryListener actualDiscoveryListener =
+                discoveryListenerArgumentCaptor.getValue();
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName("test");
+        serviceInfo.setServiceType(null);
+        actualDiscoveryListener.onServiceLost(serviceInfo);
+        mTestLooper.dispatchAll();
+
+        verify(mDiscoverServiceCallback, times(1))
+                .onServiceDiscovered("test", "_test._tcp", false /* isFound */);
+    }
+
+    @Test
+    public void stopServiceDiscovery() {
+        prepareTest();
+
+        mNsdPublisher.discoverService("_test._tcp", mDiscoverServiceCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<NsdManager.DiscoveryListener> discoveryListenerArgumentCaptor =
+                ArgumentCaptor.forClass(NsdManager.DiscoveryListener.class);
+        verify(mMockNsdManager, times(1))
+                .discoverServices(
+                        eq(new DiscoveryRequest.Builder(PROTOCOL_DNS_SD, "_test._tcp").build()),
+                        any(Executor.class),
+                        discoveryListenerArgumentCaptor.capture());
+        NsdManager.DiscoveryListener actualDiscoveryListener =
+                discoveryListenerArgumentCaptor.getValue();
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName("test");
+        serviceInfo.setServiceType(null);
+        actualDiscoveryListener.onServiceFound(serviceInfo);
+        mNsdPublisher.stopServiceDiscovery(10 /* listenerId */);
+        mTestLooper.dispatchAll();
+
+        verify(mMockNsdManager, times(1)).stopServiceDiscovery(actualDiscoveryListener);
+    }
+
+    @Test
+    public void resolveService_serviceResolved() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.resolveService(
+                "test", "_test._tcp", mResolveServiceCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<NsdServiceInfo> serviceInfoArgumentCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.ServiceInfoCallback> serviceInfoCallbackArgumentCaptor =
+                ArgumentCaptor.forClass(NsdManager.ServiceInfoCallback.class);
+        verify(mMockNsdManager, times(1))
+                .registerServiceInfoCallback(
+                        serviceInfoArgumentCaptor.capture(),
+                        any(Executor.class),
+                        serviceInfoCallbackArgumentCaptor.capture());
+        assertThat(serviceInfoArgumentCaptor.getValue().getServiceName()).isEqualTo("test");
+        assertThat(serviceInfoArgumentCaptor.getValue().getServiceType()).isEqualTo("_test._tcp");
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName("test");
+        serviceInfo.setServiceType("_test._tcp");
+        serviceInfo.setPort(12345);
+        serviceInfo.setHostname("test-host");
+        serviceInfo.setHostAddresses(
+                List.of(
+                        InetAddress.parseNumericAddress("2001::1"),
+                        InetAddress.parseNumericAddress("2001::2")));
+        serviceInfo.setAttribute(TEST_TXT_ENTRY_1.name, TEST_TXT_ENTRY_1.value);
+        serviceInfo.setAttribute(TEST_TXT_ENTRY_2.name, TEST_TXT_ENTRY_2.value);
+        serviceInfoCallbackArgumentCaptor.getValue().onServiceUpdated(serviceInfo);
+        mTestLooper.dispatchAll();
+
+        verify(mResolveServiceCallback, times(1))
+                .onServiceResolved(
+                        eq("test-host"),
+                        eq("test"),
+                        eq("_test._tcp"),
+                        eq(12345),
+                        eq(List.of("2001::1", "2001::2")),
+                        (List<DnsTxtAttribute>)
+                                argThat(containsInAnyOrder(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2)),
+                        anyInt());
+    }
+
+    @Test
+    public void stopServiceResolution() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.resolveService(
+                "test", "_test._tcp", mResolveServiceCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<NsdServiceInfo> serviceInfoArgumentCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        ArgumentCaptor<NsdManager.ServiceInfoCallback> serviceInfoCallbackArgumentCaptor =
+                ArgumentCaptor.forClass(NsdManager.ServiceInfoCallback.class);
+        verify(mMockNsdManager, times(1))
+                .registerServiceInfoCallback(
+                        serviceInfoArgumentCaptor.capture(),
+                        any(Executor.class),
+                        serviceInfoCallbackArgumentCaptor.capture());
+        assertThat(serviceInfoArgumentCaptor.getValue().getServiceName()).isEqualTo("test");
+        assertThat(serviceInfoArgumentCaptor.getValue().getServiceType()).isEqualTo("_test._tcp");
+        NsdServiceInfo serviceInfo = new NsdServiceInfo();
+        serviceInfo.setServiceName("test");
+        serviceInfo.setServiceType("_test._tcp");
+        serviceInfo.setPort(12345);
+        serviceInfo.setHostname("test-host");
+        serviceInfo.setHostAddresses(
+                List.of(
+                        InetAddress.parseNumericAddress("2001::1"),
+                        InetAddress.parseNumericAddress("2001::2")));
+        serviceInfo.setAttribute("key1", new byte[] {(byte) 0x01, (byte) 0x02});
+        serviceInfo.setAttribute("key2", new byte[] {(byte) 0x03});
+        serviceInfoCallbackArgumentCaptor.getValue().onServiceUpdated(serviceInfo);
+        mNsdPublisher.stopServiceResolution(10 /* listenerId */);
+        mTestLooper.dispatchAll();
+
+        verify(mMockNsdManager, times(1))
+                .unregisterServiceInfoCallback(serviceInfoCallbackArgumentCaptor.getValue());
+    }
+
+    @Test
+    public void resolveHost_hostResolved() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.resolveHost("test", mResolveHostCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<DnsResolver.Callback<List<InetAddress>>> resolveHostCallbackArgumentCaptor =
+                ArgumentCaptor.forClass(DnsResolver.Callback.class);
+        verify(mMockDnsResolver, times(1))
+                .query(
+                        eq(mNetwork),
+                        eq("test.local"),
+                        eq(DnsResolver.FLAG_NO_CACHE_LOOKUP),
+                        any(Executor.class),
+                        any(CancellationSignal.class),
+                        resolveHostCallbackArgumentCaptor.capture());
+        resolveHostCallbackArgumentCaptor
+                .getValue()
+                .onAnswer(
+                        List.of(
+                                InetAddresses.parseNumericAddress("2001::1"),
+                                InetAddresses.parseNumericAddress("2001::2")),
+                        0);
+        mTestLooper.dispatchAll();
+
+        verify(mResolveHostCallback, times(1))
+                .onHostResolved("test", List.of("2001::1", "2001::2"));
+    }
+
+    @Test
+    public void resolveHost_errorReported() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.resolveHost("test", mResolveHostCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+
+        ArgumentCaptor<DnsResolver.Callback<List<InetAddress>>> resolveHostCallbackArgumentCaptor =
+                ArgumentCaptor.forClass(DnsResolver.Callback.class);
+        verify(mMockDnsResolver, times(1))
+                .query(
+                        eq(mNetwork),
+                        eq("test.local"),
+                        eq(DnsResolver.FLAG_NO_CACHE_LOOKUP),
+                        any(Executor.class),
+                        any(CancellationSignal.class),
+                        resolveHostCallbackArgumentCaptor.capture());
+        resolveHostCallbackArgumentCaptor
+                .getValue()
+                .onError(new DnsResolver.DnsException(ERROR_SYSTEM, null /* cause */));
+        mTestLooper.dispatchAll();
+
+        verify(mResolveHostCallback, times(1)).onHostResolved("test", Collections.emptyList());
+    }
+
+    @Test
+    public void stopHostResolution() throws Exception {
+        prepareTest();
+
+        mNsdPublisher.resolveHost("test", mResolveHostCallback, 10 /* listenerId */);
+        mTestLooper.dispatchAll();
+        ArgumentCaptor<CancellationSignal> cancellationSignalArgumentCaptor =
+                ArgumentCaptor.forClass(CancellationSignal.class);
+        verify(mMockDnsResolver, times(1))
+                .query(
+                        eq(mNetwork),
+                        eq("test.local"),
+                        eq(DnsResolver.FLAG_NO_CACHE_LOOKUP),
+                        any(Executor.class),
+                        cancellationSignalArgumentCaptor.capture(),
+                        any(DnsResolver.Callback.class));
+
+        mNsdPublisher.stopHostResolution(10 /* listenerId */);
+        mTestLooper.dispatchAll();
+
+        assertThat(cancellationSignalArgumentCaptor.getValue().isCanceled()).isTrue();
+    }
+
+    @Test
+    public void reset_unregisterAll() {
+        prepareTest();
         ArgumentCaptor<NsdServiceInfo> actualServiceInfoCaptor =
                 ArgumentCaptor.forClass(NsdServiceInfo.class);
         ArgumentCaptor<NsdManager.RegistrationListener> actualRegistrationListenerCaptor =
@@ -299,7 +722,7 @@
                 "_test._tcp",
                 List.of("_subtype1", "_subtype2"),
                 12345,
-                List.of(txt1, txt2),
+                List.of(TEST_TXT_ENTRY_1, TEST_TXT_ENTRY_2),
                 mRegistrationReceiver,
                 16 /* listenerId */);
         mTestLooper.dispatchAll();
@@ -336,24 +759,50 @@
                 actualRegistrationListenerCaptor.getAllValues().get(1);
         actualListener2.onServiceRegistered(actualServiceInfoCaptor.getValue());
 
-        mNsdPublisher.onOtDaemonDied();
+        mNsdPublisher.registerHost(
+                "Myhost",
+                List.of("2001:db8::1", "2001:db8::2", "2001:db8::3"),
+                mRegistrationReceiver,
+                18 /* listenerId */);
+
+        mTestLooper.dispatchAll();
+
+        verify(mMockNsdManager, times(3))
+                .registerService(
+                        actualServiceInfoCaptor.capture(),
+                        eq(PROTOCOL_DNS_SD),
+                        any(Executor.class),
+                        actualRegistrationListenerCaptor.capture());
+        NsdManager.RegistrationListener actualListener3 =
+                actualRegistrationListenerCaptor.getAllValues().get(1);
+        actualListener3.onServiceRegistered(actualServiceInfoCaptor.getValue());
+
+        mNsdPublisher.reset();
         mTestLooper.dispatchAll();
 
         verify(mMockNsdManager, times(1)).unregisterService(actualListener1);
         verify(mMockNsdManager, times(1)).unregisterService(actualListener2);
+        verify(mMockNsdManager, times(1)).unregisterService(actualListener3);
     }
 
-    private static DnsTxtAttribute makeTxtAttribute(String name, List<Integer> value) {
-        DnsTxtAttribute txtAttribute = new DnsTxtAttribute();
+    @Test
+    public void onOtDaemonDied_resetIsCalled() {
+        prepareTest();
+        NsdPublisher spyNsdPublisher = spy(mNsdPublisher);
 
-        txtAttribute.name = name;
-        txtAttribute.value = new byte[value.size()];
+        spyNsdPublisher.onOtDaemonDied();
+        mTestLooper.dispatchAll();
 
-        for (int i = 0; i < value.size(); ++i) {
-            txtAttribute.value[i] = value.get(i).byteValue();
+        verify(spyNsdPublisher, times(1)).reset();
+    }
+
+    private static List<InetAddress> makeAddresses(String... addressStrings) {
+        List<InetAddress> addresses = new ArrayList<>();
+
+        for (String addressString : addressStrings) {
+            addresses.add(InetAddresses.parseNumericAddress(addressString));
         }
-
-        return txtAttribute;
+        return addresses;
     }
 
     // @Before and @Test run in different threads. NsdPublisher requires the jobs are run on the
@@ -362,6 +811,7 @@
     private void prepareTest() {
         mTestLooper = new TestLooper();
         Handler handler = new Handler(mTestLooper.getLooper());
-        mNsdPublisher = new NsdPublisher(mMockNsdManager, handler);
+        mNsdPublisher = new NsdPublisher(mMockNsdManager, mMockDnsResolver, handler);
+        mNsdPublisher.setNetworkForHostResolution(mNetwork);
     }
 }
diff --git a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
index 60a5f2b..6e2369f 100644
--- a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkControllerServiceTest.java
@@ -21,9 +21,12 @@
 import static android.net.thread.ThreadNetworkController.STATE_ENABLED;
 import static android.net.thread.ThreadNetworkException.ERROR_FAILED_PRECONDITION;
 import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR;
+import static android.net.thread.ThreadNetworkException.ERROR_THREAD_DISABLED;
 import static android.net.thread.ThreadNetworkManager.DISALLOW_THREAD_NETWORK;
 import static android.net.thread.ThreadNetworkManager.PERMISSION_THREAD_NETWORK_PRIVILEGED;
 
+import static com.android.server.thread.ThreadNetworkCountryCode.DEFAULT_COUNTRY_CODE;
+import static com.android.server.thread.ThreadPersistentSettings.THREAD_ENABLED_IN_AIRPLANE_MODE;
 import static com.android.server.thread.openthread.IOtDaemon.ErrorCode.OT_ERROR_INVALID_STATE;
 
 import static com.google.common.io.BaseEncoding.base16;
@@ -33,10 +36,12 @@
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.spy;
@@ -47,34 +52,55 @@
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.res.Resources;
 import android.net.ConnectivityManager;
 import android.net.NetworkAgent;
 import android.net.NetworkProvider;
 import android.net.thread.ActiveOperationalDataset;
 import android.net.thread.IActiveOperationalDatasetReceiver;
 import android.net.thread.IOperationReceiver;
+import android.net.thread.ThreadConfiguration;
 import android.net.thread.ThreadNetworkException;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.ParcelFileDescriptor;
 import android.os.RemoteException;
+import android.os.SystemClock;
 import android.os.UserManager;
 import android.os.test.TestLooper;
+import android.provider.Settings;
+import android.util.AtomicFile;
 
+import androidx.test.annotation.UiThreadTest;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.SmallTest;
 
+import com.android.connectivity.resources.R;
+import com.android.dx.mockito.inline.extended.ExtendedMockito;
+import com.android.server.connectivity.ConnectivityResources;
+import com.android.server.thread.openthread.DnsTxtAttribute;
+import com.android.server.thread.openthread.MeshcopTxtAttributes;
 import com.android.server.thread.openthread.testing.FakeOtDaemon;
 
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
 import org.junit.runner.RunWith;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Captor;
+import org.mockito.InOrder;
 import org.mockito.Mock;
+import org.mockito.Mockito;
 import org.mockito.MockitoAnnotations;
+import org.mockito.MockitoSession;
 
+import java.nio.charset.StandardCharsets;
+import java.time.Clock;
+import java.time.DateTimeException;
+import java.time.Instant;
+import java.time.ZoneId;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.atomic.AtomicReference;
@@ -82,6 +108,12 @@
 /** Unit tests for {@link ThreadNetworkControllerService}. */
 @SmallTest
 @RunWith(AndroidJUnit4.class)
+// This test doesn't really need to run on the UI thread, but @Before and @Test annotated methods
+// need to run in the same thread because there are code in {@code ThreadNetworkControllerService}
+// checking that all its methods are running in the thread of the handler it's using. This is due
+// to a bug in TestLooper that it executes all tasks on the current thread rather than the thread
+// associated to the backed Looper object.
+@UiThreadTest
 public final class ThreadNetworkControllerServiceTest {
     // A valid Thread Active Operational Dataset generated from OpenThread CLI "dataset new":
     // Active Timestamp: 1
@@ -106,27 +138,43 @@
     private static final String DEFAULT_NETWORK_NAME = "thread-wpan0";
     private static final int OT_ERROR_NONE = 0;
     private static final int DEFAULT_SUPPORTED_CHANNEL_MASK = 0x07FFF800; // from channel 11 to 26
-    private static final int DEFAULT_PREFERRED_CHANNEL_MASK = 0x00000800; // channel 11
+
+    // The DEFAULT_PREFERRED_CHANNEL_MASK is the ot-daemon preferred channel mask. Channel 25 and
+    // 26 are not preferred by dataset. The ThreadNetworkControllerService will only select channel
+    // 11 when it creates randomized dataset.
+    private static final int DEFAULT_PREFERRED_CHANNEL_MASK = 0x06000800; // channel 11, 25 and 26
     private static final int DEFAULT_SELECTED_CHANNEL = 11;
     private static final byte[] DEFAULT_SUPPORTED_CHANNEL_MASK_ARRAY = base16().decode("001FFFE0");
 
+    private static final String TEST_VENDOR_OUI = "AC-DE-48";
+    private static final byte[] TEST_VENDOR_OUI_BYTES = new byte[] {(byte) 0xAC, (byte) 0xDE, 0x48};
+    private static final String TEST_VENDOR_NAME = "test vendor";
+    private static final String TEST_MODEL_NAME = "test model";
+    private static final boolean TEST_VGH_VALUE = false;
+
     @Mock private ConnectivityManager mMockConnectivityManager;
     @Mock private NetworkAgent mMockNetworkAgent;
     @Mock private TunInterfaceController mMockTunIfController;
     @Mock private ParcelFileDescriptor mMockTunFd;
     @Mock private InfraInterfaceController mMockInfraIfController;
-    @Mock private ThreadPersistentSettings mMockPersistentSettings;
     @Mock private NsdPublisher mMockNsdPublisher;
     @Mock private UserManager mMockUserManager;
     @Mock private IBinder mIBinder;
+    @Mock Resources mResources;
+    @Mock ConnectivityResources mConnectivityResources;
+
     private Context mContext;
     private TestLooper mTestLooper;
     private FakeOtDaemon mFakeOtDaemon;
+    private ThreadPersistentSettings mPersistentSettings;
     private ThreadNetworkControllerService mService;
     @Captor private ArgumentCaptor<ActiveOperationalDataset> mActiveDatasetCaptor;
 
+    @Rule(order = 1)
+    public final TemporaryFolder tempFolder = new TemporaryFolder();
+
     @Before
-    public void setUp() {
+    public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
 
         mContext = spy(ApplicationProvider.getApplicationContext());
@@ -143,9 +191,25 @@
         mFakeOtDaemon = new FakeOtDaemon(handler);
         when(mMockTunIfController.getTunFd()).thenReturn(mMockTunFd);
 
-        when(mMockPersistentSettings.get(any())).thenReturn(true);
         when(mMockUserManager.hasUserRestriction(eq(DISALLOW_THREAD_NETWORK))).thenReturn(false);
 
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+
+        when(mConnectivityResources.get()).thenReturn(mResources);
+        when(mResources.getBoolean(eq(R.bool.config_thread_default_enabled))).thenReturn(true);
+        when(mResources.getString(eq(R.string.config_thread_vendor_name)))
+                .thenReturn(TEST_VENDOR_NAME);
+        when(mResources.getString(eq(R.string.config_thread_vendor_oui)))
+                .thenReturn(TEST_VENDOR_OUI);
+        when(mResources.getString(eq(R.string.config_thread_model_name)))
+                .thenReturn(TEST_MODEL_NAME);
+        when(mResources.getBoolean(eq(R.bool.config_thread_managed_by_google_home)))
+                .thenReturn(TEST_VGH_VALUE);
+
+        final AtomicFile storageFile = new AtomicFile(tempFolder.newFile("thread_settings.xml"));
+        mPersistentSettings = new ThreadPersistentSettings(storageFile, mConnectivityResources);
+        mPersistentSettings.initialize();
+
         mService =
                 new ThreadNetworkControllerService(
                         mContext,
@@ -155,9 +219,11 @@
                         mMockConnectivityManager,
                         mMockTunIfController,
                         mMockInfraIfController,
-                        mMockPersistentSettings,
+                        mPersistentSettings,
                         mMockNsdPublisher,
-                        mMockUserManager);
+                        mMockUserManager,
+                        mConnectivityResources,
+                        () -> DEFAULT_COUNTRY_CODE);
         mService.setTestNetworkAgent(mMockNetworkAgent);
     }
 
@@ -174,6 +240,109 @@
     }
 
     @Test
+    public void initialize_resourceOverlayValuesAreSetToOtDaemon() throws Exception {
+        when(mResources.getString(eq(R.string.config_thread_vendor_name)))
+                .thenReturn(TEST_VENDOR_NAME);
+        when(mResources.getString(eq(R.string.config_thread_vendor_oui)))
+                .thenReturn(TEST_VENDOR_OUI);
+        when(mResources.getString(eq(R.string.config_thread_model_name)))
+                .thenReturn(TEST_MODEL_NAME);
+        when(mResources.getBoolean(eq(R.bool.config_thread_managed_by_google_home)))
+                .thenReturn(true);
+
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        MeshcopTxtAttributes meshcopTxts = mFakeOtDaemon.getOverriddenMeshcopTxtAttributes();
+        assertThat(meshcopTxts.vendorName).isEqualTo(TEST_VENDOR_NAME);
+        assertThat(meshcopTxts.vendorOui).isEqualTo(TEST_VENDOR_OUI_BYTES);
+        assertThat(meshcopTxts.modelName).isEqualTo(TEST_MODEL_NAME);
+        assertThat(meshcopTxts.nonStandardTxtEntries)
+                .containsExactly(new DnsTxtAttribute("vgh", "1".getBytes(StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_managedByGoogleIsFalse_vghIsZero() {
+        when(mResources.getBoolean(eq(R.bool.config_thread_managed_by_google_home)))
+                .thenReturn(false);
+
+        MeshcopTxtAttributes meshcopTxts =
+                ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources);
+
+        assertThat(meshcopTxts.nonStandardTxtEntries)
+                .containsExactly(new DnsTxtAttribute("vgh", "0".getBytes(StandardCharsets.UTF_8)));
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_emptyVendorName_accepted() {
+        when(mResources.getString(eq(R.string.config_thread_vendor_name))).thenReturn("");
+
+        MeshcopTxtAttributes meshcopTxts =
+                ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources);
+
+        assertThat(meshcopTxts.vendorName).isEqualTo("");
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_tooLongVendorName_throwsIllegalStateException() {
+        when(mResources.getString(eq(R.string.config_thread_vendor_name)))
+                .thenReturn("vendor name is 25 bytes!!");
+
+        assertThrows(
+                IllegalStateException.class,
+                () -> ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources));
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_tooLongModelName_throwsIllegalStateException() {
+        when(mResources.getString(eq(R.string.config_thread_model_name)))
+                .thenReturn("model name is 25 bytes!!!");
+
+        assertThrows(
+                IllegalStateException.class,
+                () -> ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources));
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_emptyModelName_accepted() {
+        when(mResources.getString(eq(R.string.config_thread_model_name))).thenReturn("");
+
+        var meshcopTxts = ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources);
+        assertThat(meshcopTxts.modelName).isEqualTo("");
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_invalidVendorOui_throwsIllegalStateException() {
+        assertThrows(
+                IllegalStateException.class, () -> getMeshcopTxtAttributesWithVendorOui("ABCDEFA"));
+        assertThrows(
+                IllegalStateException.class, () -> getMeshcopTxtAttributesWithVendorOui("ABCDEG"));
+        assertThrows(
+                IllegalStateException.class, () -> getMeshcopTxtAttributesWithVendorOui("ABCD"));
+        assertThrows(
+                IllegalStateException.class,
+                () -> getMeshcopTxtAttributesWithVendorOui("AB.CD.EF"));
+    }
+
+    @Test
+    public void getMeshcopTxtAttributes_validVendorOui_accepted() {
+        assertThat(getMeshcopTxtAttributesWithVendorOui("010203")).isEqualTo(new byte[] {1, 2, 3});
+        assertThat(getMeshcopTxtAttributesWithVendorOui("01-02-03"))
+                .isEqualTo(new byte[] {1, 2, 3});
+        assertThat(getMeshcopTxtAttributesWithVendorOui("01:02:03"))
+                .isEqualTo(new byte[] {1, 2, 3});
+        assertThat(getMeshcopTxtAttributesWithVendorOui("ABCDEF"))
+                .isEqualTo(new byte[] {(byte) 0xAB, (byte) 0xCD, (byte) 0xEF});
+        assertThat(getMeshcopTxtAttributesWithVendorOui("abcdef"))
+                .isEqualTo(new byte[] {(byte) 0xAB, (byte) 0xCD, (byte) 0xEF});
+    }
+
+    private byte[] getMeshcopTxtAttributesWithVendorOui(String vendorOui) {
+        when(mResources.getString(eq(R.string.config_thread_vendor_oui))).thenReturn(vendorOui);
+        return ThreadNetworkControllerService.getMeshcopTxtAttributes(mResources).vendorOui;
+    }
+
+    @Test
     public void join_otDaemonRemoteFailure_returnsInternalError() throws Exception {
         mService.initialize();
         final IOperationReceiver mockReceiver = mock(IOperationReceiver.class);
@@ -204,13 +373,13 @@
     }
 
     @Test
-    public void userRestriction_initWithUserRestricted_threadIsDisabled() {
+    public void userRestriction_initWithUserRestricted_otDaemonNotStarted() {
         when(mMockUserManager.hasUserRestriction(eq(DISALLOW_THREAD_NETWORK))).thenReturn(true);
 
         mService.initialize();
         mTestLooper.dispatchAll();
 
-        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_DISABLED);
+        assertThat(mFakeOtDaemon.isInitialized()).isFalse();
     }
 
     @Test
@@ -225,15 +394,9 @@
 
     @Test
     public void userRestriction_userBecomesRestricted_stateIsDisabledButNotPersisted() {
-        AtomicReference<BroadcastReceiver> receiverRef = new AtomicReference<>();
         when(mMockUserManager.hasUserRestriction(eq(DISALLOW_THREAD_NETWORK))).thenReturn(false);
-        doAnswer(
-                        invocation -> {
-                            receiverRef.set((BroadcastReceiver) invocation.getArguments()[0]);
-                            return null;
-                        })
-                .when(mContext)
-                .registerReceiver(any(BroadcastReceiver.class), any(), any(), any());
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(UserManager.ACTION_USER_RESTRICTIONS_CHANGED);
         mService.initialize();
         mTestLooper.dispatchAll();
 
@@ -242,21 +405,14 @@
         mTestLooper.dispatchAll();
 
         assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_DISABLED);
-        verify(mMockPersistentSettings, never())
-                .put(eq(ThreadPersistentSettings.THREAD_ENABLED.key), eq(false));
+        assertThat(mPersistentSettings.get(ThreadPersistentSettings.THREAD_ENABLED)).isTrue();
     }
 
     @Test
-    public void userRestriction_userBecomesNotRestricted_stateIsEnabledButNotPersisted() {
-        AtomicReference<BroadcastReceiver> receiverRef = new AtomicReference<>();
+    public void userRestriction_userBecomesNotRestricted_stateIsEnabled() {
         when(mMockUserManager.hasUserRestriction(eq(DISALLOW_THREAD_NETWORK))).thenReturn(true);
-        doAnswer(
-                        invocation -> {
-                            receiverRef.set((BroadcastReceiver) invocation.getArguments()[0]);
-                            return null;
-                        })
-                .when(mContext)
-                .registerReceiver(any(BroadcastReceiver.class), any(), any(), any());
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(UserManager.ACTION_USER_RESTRICTIONS_CHANGED);
         mService.initialize();
         mTestLooper.dispatchAll();
 
@@ -265,8 +421,6 @@
         mTestLooper.dispatchAll();
 
         assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_ENABLED);
-        verify(mMockPersistentSettings, never())
-                .put(eq(ThreadPersistentSettings.THREAD_ENABLED.key), eq(true));
     }
 
     @Test
@@ -283,6 +437,116 @@
         assertThat(failure.getErrorCode()).isEqualTo(ERROR_FAILED_PRECONDITION);
     }
 
+    @Test
+    public void airplaneMode_initWithAirplaneModeOn_otDaemonNotStarted() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.isInitialized()).isFalse();
+    }
+
+    @Test
+    public void airplaneMode_initWithAirplaneModeOff_threadIsEnabled() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_ENABLED);
+    }
+
+    @Test
+    public void airplaneMode_changesFromOffToOn_stateIsDisabled() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_DISABLED);
+    }
+
+    @Test
+    public void airplaneMode_changesFromOnToOff_stateIsEnabled() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+        mService.initialize();
+        mTestLooper.dispatchAll();
+
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_ENABLED);
+    }
+
+    @Test
+    public void airplaneMode_setEnabledWhenAirplaneModeIsOn_WillNotAutoDisableSecondTime() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+        CompletableFuture<Void> setEnabledFuture = new CompletableFuture<>();
+        mService.initialize();
+
+        mService.setEnabled(true, newOperationReceiver(setEnabledFuture));
+        mTestLooper.dispatchAll();
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_ENABLED);
+        assertThat(mPersistentSettings.get(THREAD_ENABLED_IN_AIRPLANE_MODE)).isTrue();
+    }
+
+    @Test
+    public void airplaneMode_setDisabledWhenAirplaneModeIsOn_WillAutoDisableSecondTime() {
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        AtomicReference<BroadcastReceiver> receiverRef =
+                captureBroadcastReceiver(Intent.ACTION_AIRPLANE_MODE_CHANGED);
+        CompletableFuture<Void> setEnabledFuture = new CompletableFuture<>();
+        mService.initialize();
+        mService.setEnabled(true, newOperationReceiver(setEnabledFuture));
+        mTestLooper.dispatchAll();
+
+        mService.setEnabled(false, newOperationReceiver(setEnabledFuture));
+        mTestLooper.dispatchAll();
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 0);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+        Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.AIRPLANE_MODE_ON, 1);
+        receiverRef.get().onReceive(mContext, new Intent());
+        mTestLooper.dispatchAll();
+
+        assertThat(mFakeOtDaemon.getEnabledState()).isEqualTo(STATE_DISABLED);
+        assertThat(mPersistentSettings.get(THREAD_ENABLED_IN_AIRPLANE_MODE)).isFalse();
+    }
+
+    private AtomicReference<BroadcastReceiver> captureBroadcastReceiver(String action) {
+        AtomicReference<BroadcastReceiver> receiverRef = new AtomicReference<>();
+
+        doAnswer(
+                        invocation -> {
+                            receiverRef.set((BroadcastReceiver) invocation.getArguments()[0]);
+                            return null;
+                        })
+                .when(mContext)
+                .registerReceiver(
+                        any(BroadcastReceiver.class),
+                        argThat(actualIntentFilter -> actualIntentFilter.hasAction(action)));
+
+        return receiverRef;
+    }
+
     private static IOperationReceiver newOperationReceiver(CompletableFuture<Void> future) {
         return new IOperationReceiver.Stub() {
             @Override
@@ -298,6 +562,102 @@
     }
 
     @Test
+    public void
+            createRandomizedDataset_noNetworkTimeClock_datasetActiveTimestampIsNotAuthoritative()
+                    throws Exception {
+        MockitoSession session =
+                ExtendedMockito.mockitoSession().mockStatic(SystemClock.class).startMocking();
+        final IActiveOperationalDatasetReceiver mockReceiver =
+                ExtendedMockito.mock(IActiveOperationalDatasetReceiver.class);
+
+        try {
+            ExtendedMockito.when(SystemClock.currentNetworkTimeClock())
+                    .thenThrow(new DateTimeException("fake throw"));
+            mService.createRandomizedDataset(DEFAULT_NETWORK_NAME, mockReceiver);
+            mTestLooper.dispatchAll();
+        } finally {
+            session.finishMocking();
+        }
+
+        verify(mockReceiver, never()).onError(anyInt(), anyString());
+        verify(mockReceiver, times(1)).onSuccess(mActiveDatasetCaptor.capture());
+        ActiveOperationalDataset activeDataset = mActiveDatasetCaptor.getValue();
+        assertThat(activeDataset.getActiveTimestamp().isAuthoritativeSource()).isFalse();
+    }
+
+    @Test
+    public void createRandomizedDataset_zeroNanoseconds_returnsZeroTicks() throws Exception {
+        Instant now = Instant.ofEpochSecond(0, 0);
+        Clock clock = Clock.fixed(now, ZoneId.systemDefault());
+        MockitoSession session =
+                ExtendedMockito.mockitoSession().mockStatic(SystemClock.class).startMocking();
+        final IActiveOperationalDatasetReceiver mockReceiver =
+                ExtendedMockito.mock(IActiveOperationalDatasetReceiver.class);
+
+        try {
+            ExtendedMockito.when(SystemClock.currentNetworkTimeClock()).thenReturn(clock);
+            mService.createRandomizedDataset(DEFAULT_NETWORK_NAME, mockReceiver);
+            mTestLooper.dispatchAll();
+        } finally {
+            session.finishMocking();
+        }
+
+        verify(mockReceiver, never()).onError(anyInt(), anyString());
+        verify(mockReceiver, times(1)).onSuccess(mActiveDatasetCaptor.capture());
+        ActiveOperationalDataset activeDataset = mActiveDatasetCaptor.getValue();
+        assertThat(activeDataset.getActiveTimestamp().getTicks()).isEqualTo(0);
+    }
+
+    @Test
+    public void createRandomizedDataset_maxNanoseconds_returnsMaxTicks() throws Exception {
+        // The nanoseconds to ticks conversion is rounded in the current implementation.
+        // 32767.5 / 32768 * 1000000000 = 999984741.2109375, using 999984741 to
+        // produce the maximum ticks.
+        Instant now = Instant.ofEpochSecond(0, 999984741);
+        Clock clock = Clock.fixed(now, ZoneId.systemDefault());
+        MockitoSession session =
+                ExtendedMockito.mockitoSession().mockStatic(SystemClock.class).startMocking();
+        final IActiveOperationalDatasetReceiver mockReceiver =
+                ExtendedMockito.mock(IActiveOperationalDatasetReceiver.class);
+
+        try {
+            ExtendedMockito.when(SystemClock.currentNetworkTimeClock()).thenReturn(clock);
+            mService.createRandomizedDataset(DEFAULT_NETWORK_NAME, mockReceiver);
+            mTestLooper.dispatchAll();
+        } finally {
+            session.finishMocking();
+        }
+
+        verify(mockReceiver, never()).onError(anyInt(), anyString());
+        verify(mockReceiver, times(1)).onSuccess(mActiveDatasetCaptor.capture());
+        ActiveOperationalDataset activeDataset = mActiveDatasetCaptor.getValue();
+        assertThat(activeDataset.getActiveTimestamp().getTicks()).isEqualTo(32767);
+    }
+
+    @Test
+    public void createRandomizedDataset_hasNetworkTimeClock_datasetActiveTimestampIsAuthoritative()
+            throws Exception {
+        MockitoSession session =
+                ExtendedMockito.mockitoSession().mockStatic(SystemClock.class).startMocking();
+        final IActiveOperationalDatasetReceiver mockReceiver =
+                ExtendedMockito.mock(IActiveOperationalDatasetReceiver.class);
+
+        try {
+            ExtendedMockito.when(SystemClock.currentNetworkTimeClock())
+                    .thenReturn(Clock.systemUTC());
+            mService.createRandomizedDataset(DEFAULT_NETWORK_NAME, mockReceiver);
+            mTestLooper.dispatchAll();
+        } finally {
+            session.finishMocking();
+        }
+
+        verify(mockReceiver, never()).onError(anyInt(), anyString());
+        verify(mockReceiver, times(1)).onSuccess(mActiveDatasetCaptor.capture());
+        ActiveOperationalDataset activeDataset = mActiveDatasetCaptor.getValue();
+        assertThat(activeDataset.getActiveTimestamp().isAuthoritativeSource()).isTrue();
+    }
+
+    @Test
     public void createRandomizedDataset_succeed_activeDatasetCreated() throws Exception {
         final IActiveOperationalDatasetReceiver mockReceiver =
                 mock(IActiveOperationalDatasetReceiver.class);
@@ -332,4 +692,101 @@
         verify(mockReceiver, never()).onSuccess(any(ActiveOperationalDataset.class));
         verify(mockReceiver, times(1)).onError(eq(ERROR_INTERNAL_ERROR), anyString());
     }
+
+    @Test
+    public void forceStopOtDaemonForTest_noPermission_throwsSecurityException() {
+        doThrow(new SecurityException(""))
+                .when(mContext)
+                .enforceCallingOrSelfPermission(eq(PERMISSION_THREAD_NETWORK_PRIVILEGED), any());
+
+        assertThrows(
+                SecurityException.class,
+                () -> mService.forceStopOtDaemonForTest(true, new IOperationReceiver.Default()));
+    }
+
+    @Test
+    public void forceStopOtDaemonForTest_enabled_otDaemonDiesAndJoinFails() throws Exception {
+        mService.initialize();
+        IOperationReceiver mockReceiver = mock(IOperationReceiver.class);
+        IOperationReceiver mockJoinReceiver = mock(IOperationReceiver.class);
+
+        mService.forceStopOtDaemonForTest(true, mockReceiver);
+        mTestLooper.dispatchAll();
+        mService.join(DEFAULT_ACTIVE_DATASET, mockJoinReceiver);
+        mTestLooper.dispatchAll();
+
+        verify(mockReceiver, times(1)).onSuccess();
+        assertThat(mFakeOtDaemon.isInitialized()).isFalse();
+        verify(mockJoinReceiver, times(1)).onError(eq(ERROR_THREAD_DISABLED), anyString());
+    }
+
+    @Test
+    public void forceStopOtDaemonForTest_disable_otDaemonRestartsAndJoinSccess() throws Exception {
+        mService.initialize();
+        IOperationReceiver mockReceiver = mock(IOperationReceiver.class);
+        IOperationReceiver mockJoinReceiver = mock(IOperationReceiver.class);
+
+        mService.forceStopOtDaemonForTest(true, mock(IOperationReceiver.class));
+        mTestLooper.dispatchAll();
+        mService.forceStopOtDaemonForTest(false, mockReceiver);
+        mTestLooper.dispatchAll();
+        mService.join(DEFAULT_ACTIVE_DATASET, mockJoinReceiver);
+        mTestLooper.dispatchAll();
+        mTestLooper.moveTimeForward(FakeOtDaemon.JOIN_DELAY.toMillis() + 100);
+        mTestLooper.dispatchAll();
+
+        verify(mockReceiver, times(1)).onSuccess();
+        assertThat(mFakeOtDaemon.isInitialized()).isTrue();
+        verify(mockJoinReceiver, times(1)).onSuccess();
+    }
+
+    @Test
+    public void onOtDaemonDied_joinedNetwork_interfaceStateBackToUp() throws Exception {
+        mService.initialize();
+        final IOperationReceiver mockReceiver = mock(IOperationReceiver.class);
+        mService.join(DEFAULT_ACTIVE_DATASET, mockReceiver);
+        mTestLooper.dispatchAll();
+        mTestLooper.moveTimeForward(FakeOtDaemon.JOIN_DELAY.toMillis() + 100);
+        mTestLooper.dispatchAll();
+
+        Mockito.reset(mMockInfraIfController);
+        mFakeOtDaemon.terminate();
+        mTestLooper.dispatchAll();
+
+        verify(mMockTunIfController, times(1)).onOtDaemonDied();
+        InOrder inOrder = Mockito.inOrder(mMockTunIfController);
+        inOrder.verify(mMockTunIfController, times(1)).setInterfaceUp(false);
+        inOrder.verify(mMockTunIfController, times(1)).setInterfaceUp(true);
+    }
+
+    @Test
+    public void setConfiguration_configurationUpdated() throws Exception {
+        mService.initialize();
+        final IOperationReceiver mockReceiver1 = mock(IOperationReceiver.class);
+        final IOperationReceiver mockReceiver2 = mock(IOperationReceiver.class);
+        final IOperationReceiver mockReceiver3 = mock(IOperationReceiver.class);
+        ThreadConfiguration config1 =
+                new ThreadConfiguration.Builder()
+                        .setNat64Enabled(false)
+                        .setDhcp6PdEnabled(false)
+                        .build();
+        ThreadConfiguration config2 =
+                new ThreadConfiguration.Builder()
+                        .setNat64Enabled(true)
+                        .setDhcp6PdEnabled(true)
+                        .build();
+        ThreadConfiguration config3 =
+                new ThreadConfiguration.Builder(config2).build(); // Same as config2
+
+        mService.setConfiguration(config1, mockReceiver1);
+        mService.setConfiguration(config2, mockReceiver2);
+        mService.setConfiguration(config3, mockReceiver3);
+        mTestLooper.dispatchAll();
+
+        assertThat(mPersistentSettings.getConfiguration()).isEqualTo(config3);
+        InOrder inOrder = Mockito.inOrder(mockReceiver1, mockReceiver2, mockReceiver3);
+        inOrder.verify(mockReceiver1).onSuccess();
+        inOrder.verify(mockReceiver2).onSuccess();
+        inOrder.verify(mockReceiver3).onSuccess();
+    }
 }
diff --git a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkCountryCodeTest.java b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkCountryCodeTest.java
index 5ca6511..ca9741d 100644
--- a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkCountryCodeTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkCountryCodeTest.java
@@ -19,6 +19,7 @@
 import static android.net.thread.ThreadNetworkException.ERROR_INTERNAL_ERROR;
 
 import static com.android.server.thread.ThreadNetworkCountryCode.DEFAULT_COUNTRY_CODE;
+import static com.android.server.thread.ThreadPersistentSettings.THREAD_COUNTRY_CODE;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -104,6 +105,7 @@
     @Mock List<SubscriptionInfo> mSubscriptionInfoList;
     @Mock SubscriptionInfo mSubscriptionInfo0;
     @Mock SubscriptionInfo mSubscriptionInfo1;
+    @Mock ThreadPersistentSettings mPersistentSettings;
 
     private ThreadNetworkCountryCode mThreadNetworkCountryCode;
     private boolean mErrorSetCountryCode;
@@ -164,7 +166,8 @@
                 mContext,
                 mTelephonyManager,
                 mSubscriptionManager,
-                oemCountryCode);
+                oemCountryCode,
+                mPersistentSettings);
     }
 
     private static Address newAddress(String countryCode) {
@@ -450,6 +453,14 @@
     }
 
     @Test
+    public void settingsCountryCode_settingsCountryCodeIsActive_settingsCountryCodeIsUsed() {
+        when(mPersistentSettings.get(THREAD_COUNTRY_CODE)).thenReturn(TEST_COUNTRY_CODE_CN);
+        mThreadNetworkCountryCode.initialize();
+
+        assertThat(mThreadNetworkCountryCode.getCountryCode()).isEqualTo(TEST_COUNTRY_CODE_CN);
+    }
+
+    @Test
     public void dump_allCountryCodeInfoAreDumped() {
         StringWriter stringWriter = new StringWriter();
         PrintWriter printWriter = new PrintWriter(stringWriter);
diff --git a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkShellCommandTest.java b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkShellCommandTest.java
index c7e0eca..dfb3129 100644
--- a/thread/tests/unit/src/com/android/server/thread/ThreadNetworkShellCommandTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/ThreadNetworkShellCommandTest.java
@@ -16,17 +16,29 @@
 
 package com.android.server.thread;
 
+import static com.google.common.io.BaseEncoding.base16;
+import static com.google.common.truth.Truth.assertThat;
+
 import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.anyString;
+import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.contains;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.validateMockitoUsage;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.content.Context;
+import android.net.thread.ActiveOperationalDataset;
+import android.net.thread.PendingOperationalDataset;
 import android.os.Binder;
-import android.os.Process;
 
+import androidx.test.core.app.ApplicationProvider;
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
@@ -34,6 +46,7 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
@@ -44,20 +57,44 @@
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class ThreadNetworkShellCommandTest {
-    private static final String TAG = "ThreadNetworkShellCommandTTest";
-    @Mock ThreadNetworkService mThreadNetworkService;
-    @Mock ThreadNetworkCountryCode mThreadNetworkCountryCode;
-    @Mock PrintWriter mErrorWriter;
-    @Mock PrintWriter mOutputWriter;
+    // A valid Thread Active Operational Dataset generated from OpenThread CLI "dataset new":
+    // Active Timestamp: 1
+    // Channel: 19
+    // Channel Mask: 0x07FFF800
+    // Ext PAN ID: ACC214689BC40BDF
+    // Mesh Local Prefix: fd64:db12:25f4:7e0b::/64
+    // Network Key: F26B3153760F519A63BAFDDFFC80D2AF
+    // Network Name: OpenThread-d9a0
+    // PAN ID: 0xD9A0
+    // PSKc: A245479C836D551B9CA557F7B9D351B4
+    // Security Policy: 672 onrcb
+    private static final String DEFAULT_ACTIVE_DATASET_TLVS =
+            "0E080000000000010000000300001335060004001FFFE002"
+                    + "08ACC214689BC40BDF0708FD64DB1225F47E0B0510F26B31"
+                    + "53760F519A63BAFDDFFC80D2AF030F4F70656E5468726561"
+                    + "642D643961300102D9A00410A245479C836D551B9CA557F7"
+                    + "B9D351B40C0402A0FFF8";
 
-    ThreadNetworkShellCommand mThreadNetworkShellCommand;
+    @Mock private ThreadNetworkControllerService mControllerService;
+    @Mock private ThreadNetworkCountryCode mCountryCode;
+    @Mock private PrintWriter mErrorWriter;
+    @Mock private PrintWriter mOutputWriter;
+
+    private Context mContext;
+    private ThreadNetworkShellCommand mShellCommand;
 
     @Before
     public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
 
-        mThreadNetworkShellCommand = new ThreadNetworkShellCommand(mThreadNetworkCountryCode);
-        mThreadNetworkShellCommand.setPrintWriters(mOutputWriter, mErrorWriter);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        doNothing()
+                .when(mContext)
+                .enforceCallingOrSelfPermission(
+                        eq("android.permission.THREAD_NETWORK_TESTING"), anyString());
+
+        mShellCommand = new ThreadNetworkShellCommand(mContext, mControllerService, mCountryCode);
+        mShellCommand.setPrintWriters(mOutputWriter, mErrorWriter);
     }
 
     @After
@@ -66,11 +103,26 @@
     }
 
     @Test
-    public void getCountryCode_executeInUnrootedShell_allowed() {
-        BinderUtil.setUid(Process.SHELL_UID);
-        when(mThreadNetworkCountryCode.getCountryCode()).thenReturn("US");
+    public void getCountryCode_testingPermissionIsChecked() {
+        when(mCountryCode.getCountryCode()).thenReturn("US");
 
-        mThreadNetworkShellCommand.exec(
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"get-country-code"});
+
+        verify(mContext, times(1))
+                .enforceCallingOrSelfPermission(
+                        eq("android.permission.THREAD_NETWORK_TESTING"), anyString());
+    }
+
+    @Test
+    public void getCountryCode_currentCountryCodePrinted() {
+        when(mCountryCode.getCountryCode()).thenReturn("US");
+
+        mShellCommand.exec(
                 new Binder(),
                 new FileDescriptor(),
                 new FileDescriptor(),
@@ -81,60 +133,172 @@
     }
 
     @Test
-    public void forceSetCountryCodeEnabled_executeInUnrootedShell_notAllowed() {
-        BinderUtil.setUid(Process.SHELL_UID);
-
-        mThreadNetworkShellCommand.exec(
+    public void forceSetCountryCodeEnabled_testingPermissionIsChecked() {
+        mShellCommand.exec(
                 new Binder(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new String[] {"force-country-code", "enabled", "US"});
 
-        verify(mThreadNetworkCountryCode, never()).setOverrideCountryCode(eq("US"));
-        verify(mErrorWriter).println(contains("force-country-code"));
+        verify(mContext, times(1))
+                .enforceCallingOrSelfPermission(
+                        eq("android.permission.THREAD_NETWORK_TESTING"), anyString());
     }
 
     @Test
-    public void forceSetCountryCodeEnabled_executeInRootedShell_allowed() {
-        BinderUtil.setUid(Process.ROOT_UID);
-
-        mThreadNetworkShellCommand.exec(
+    public void forceSetCountryCodeEnabled_countryCodeIsOverridden() {
+        mShellCommand.exec(
                 new Binder(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new String[] {"force-country-code", "enabled", "US"});
 
-        verify(mThreadNetworkCountryCode).setOverrideCountryCode(eq("US"));
+        verify(mCountryCode).setOverrideCountryCode(eq("US"));
     }
 
     @Test
-    public void forceSetCountryCodeDisabled_executeInUnrootedShell_notAllowed() {
-        BinderUtil.setUid(Process.SHELL_UID);
-
-        mThreadNetworkShellCommand.exec(
+    public void forceSetCountryCodeDisabled_overriddenCountryCodeIsCleared() {
+        mShellCommand.exec(
                 new Binder(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new String[] {"force-country-code", "disabled"});
 
-        verify(mThreadNetworkCountryCode, never()).setOverrideCountryCode(any());
-        verify(mErrorWriter).println(contains("force-country-code"));
+        verify(mCountryCode).clearOverrideCountryCode();
     }
 
     @Test
-    public void forceSetCountryCodeDisabled_executeInRootedShell_allowed() {
-        BinderUtil.setUid(Process.ROOT_UID);
-
-        mThreadNetworkShellCommand.exec(
+    public void forceStopOtDaemon_testingPermissionIsChecked() {
+        mShellCommand.exec(
                 new Binder(),
                 new FileDescriptor(),
                 new FileDescriptor(),
                 new FileDescriptor(),
-                new String[] {"force-country-code", "disabled"});
+                new String[] {"force-stop-ot-daemon", "enabled"});
 
-        verify(mThreadNetworkCountryCode).clearOverrideCountryCode();
+        verify(mContext, times(1))
+                .enforceCallingOrSelfPermission(
+                        eq("android.permission.THREAD_NETWORK_TESTING"), anyString());
+    }
+
+    @Test
+    public void forceStopOtDaemon_serviceThrows_failed() {
+        doThrow(new SecurityException(""))
+                .when(mControllerService)
+                .forceStopOtDaemonForTest(eq(true), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"force-stop-ot-daemon", "enabled"});
+
+        verify(mControllerService, times(1)).forceStopOtDaemonForTest(eq(true), any());
+        verify(mOutputWriter, never()).println();
+    }
+
+    @Test
+    public void forceStopOtDaemon_serviceApiTimeout_failedWithTimeoutError() {
+        doNothing().when(mControllerService).forceStopOtDaemonForTest(eq(true), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"force-stop-ot-daemon", "enabled"});
+
+        verify(mControllerService, times(1)).forceStopOtDaemonForTest(eq(true), any());
+        verify(mErrorWriter, atLeastOnce()).println(contains("timeout"));
+        verify(mOutputWriter, never()).println();
+    }
+
+    @Test
+    public void join_controllerServiceJoinIsCalled() {
+        doNothing().when(mControllerService).join(any(), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"join", DEFAULT_ACTIVE_DATASET_TLVS});
+
+        var activeDataset =
+                ActiveOperationalDataset.fromThreadTlvs(
+                        base16().decode(DEFAULT_ACTIVE_DATASET_TLVS));
+        verify(mControllerService, times(1)).join(eq(activeDataset), any());
+        verify(mErrorWriter, never()).println();
+    }
+
+    @Test
+    public void join_invalidDataset_controllerServiceJoinIsNotCalled() {
+        doNothing().when(mControllerService).join(any(), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"join", "000102"});
+
+        verify(mControllerService, never()).join(any(), any());
+        verify(mErrorWriter, times(1)).println(contains("Invalid dataset argument"));
+    }
+
+    @Test
+    public void migrate_controllerServiceMigrateIsCalled() {
+        doNothing().when(mControllerService).scheduleMigration(any(), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"migrate", DEFAULT_ACTIVE_DATASET_TLVS, "300"});
+
+        ArgumentCaptor<PendingOperationalDataset> captor =
+                ArgumentCaptor.forClass(PendingOperationalDataset.class);
+        verify(mControllerService, times(1)).scheduleMigration(captor.capture(), any());
+        assertThat(captor.getValue().getActiveOperationalDataset())
+                .isEqualTo(
+                        ActiveOperationalDataset.fromThreadTlvs(
+                                base16().decode(DEFAULT_ACTIVE_DATASET_TLVS)));
+        assertThat(captor.getValue().getDelayTimer().toSeconds()).isEqualTo(300);
+        verify(mErrorWriter, never()).println();
+    }
+
+    @Test
+    public void migrate_invalidDataset_controllerServiceMigrateIsNotCalled() {
+        doNothing().when(mControllerService).scheduleMigration(any(), any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"migrate", "000102", "300"});
+
+        verify(mControllerService, never()).scheduleMigration(any(), any());
+        verify(mErrorWriter, times(1)).println(contains("Invalid dataset argument"));
+    }
+
+    @Test
+    public void leave_controllerServiceLeaveIsCalled() {
+        doNothing().when(mControllerService).leave(any());
+
+        mShellCommand.exec(
+                new Binder(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new FileDescriptor(),
+                new String[] {"leave"});
+
+        verify(mControllerService, times(1)).leave(any());
+        verify(mErrorWriter, never()).println();
     }
 }
diff --git a/thread/tests/unit/src/com/android/server/thread/ThreadPersistentSettingsTest.java b/thread/tests/unit/src/com/android/server/thread/ThreadPersistentSettingsTest.java
index 49b002a..c932ac8 100644
--- a/thread/tests/unit/src/com/android/server/thread/ThreadPersistentSettingsTest.java
+++ b/thread/tests/unit/src/com/android/server/thread/ThreadPersistentSettingsTest.java
@@ -16,44 +16,53 @@
 
 package com.android.server.thread;
 
+import static com.android.server.thread.ThreadPersistentSettings.THREAD_COUNTRY_CODE;
 import static com.android.server.thread.ThreadPersistentSettings.THREAD_ENABLED;
+
 import static com.google.common.truth.Truth.assertThat;
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.anyInt;
-import static org.mockito.Mockito.doAnswer;
+
 import static org.mockito.Mockito.eq;
-import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.validateMockitoUsage;
-import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import android.content.res.Resources;
+import android.net.thread.ThreadConfiguration;
 import android.os.PersistableBundle;
 import android.util.AtomicFile;
+
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
+
 import com.android.connectivity.resources.R;
 import com.android.server.connectivity.ConnectivityResources;
-import java.io.ByteArrayOutputStream;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
+
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import java.io.ByteArrayOutputStream;
+import java.io.FileOutputStream;
+
 /** Unit tests for {@link ThreadPersistentSettings}. */
 @RunWith(AndroidJUnit4.class)
 @SmallTest
 public class ThreadPersistentSettingsTest {
-    @Mock private AtomicFile mAtomicFile;
+    private static final String TEST_COUNTRY_CODE = "CN";
+
     @Mock Resources mResources;
     @Mock ConnectivityResources mConnectivityResources;
 
+    private AtomicFile mAtomicFile;
     private ThreadPersistentSettings mThreadPersistentSettings;
 
+    @Rule(order = 0)
+    public final TemporaryFolder mTemporaryFolder = new TemporaryFolder();
+
     @Before
     public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
@@ -61,8 +70,7 @@
         when(mConnectivityResources.get()).thenReturn(mResources);
         when(mResources.getBoolean(eq(R.bool.config_thread_default_enabled))).thenReturn(true);
 
-        FileOutputStream fos = mock(FileOutputStream.class);
-        when(mAtomicFile.startWrite()).thenReturn(fos);
+        mAtomicFile = createAtomicFile();
         mThreadPersistentSettings =
                 new ThreadPersistentSettings(mAtomicFile, mConnectivityResources);
     }
@@ -76,7 +84,7 @@
     @Test
     public void initialize_readsFromFile() throws Exception {
         byte[] data = createXmlForParsing(THREAD_ENABLED.key, false);
-        setupAtomicFileMockForRead(data);
+        setupAtomicFileForRead(data);
 
         mThreadPersistentSettings.initialize();
 
@@ -86,7 +94,7 @@
     @Test
     public void initialize_ThreadDisabledInResources_returnsThreadDisabled() throws Exception {
         when(mResources.getBoolean(eq(R.bool.config_thread_default_enabled))).thenReturn(false);
-        setupAtomicFileMockForRead(new byte[0]);
+        setupAtomicFileForRead(new byte[0]);
 
         mThreadPersistentSettings.initialize();
 
@@ -98,7 +106,7 @@
             throws Exception {
         when(mResources.getBoolean(eq(R.bool.config_thread_default_enabled))).thenReturn(false);
         byte[] data = createXmlForParsing(THREAD_ENABLED.key, true);
-        setupAtomicFileMockForRead(data);
+        setupAtomicFileForRead(data);
 
         mThreadPersistentSettings.initialize();
 
@@ -110,9 +118,6 @@
         mThreadPersistentSettings.put(THREAD_ENABLED.key, true);
 
         assertThat(mThreadPersistentSettings.get(THREAD_ENABLED)).isTrue();
-        // Confirm that file writes have been triggered.
-        verify(mAtomicFile).startWrite();
-        verify(mAtomicFile).finishWrite(any());
     }
 
     @Test
@@ -120,9 +125,81 @@
         mThreadPersistentSettings.put(THREAD_ENABLED.key, false);
 
         assertThat(mThreadPersistentSettings.get(THREAD_ENABLED)).isFalse();
-        // Confirm that file writes have been triggered.
-        verify(mAtomicFile).startWrite();
-        verify(mAtomicFile).finishWrite(any());
+        mThreadPersistentSettings.initialize();
+        assertThat(mThreadPersistentSettings.get(THREAD_ENABLED)).isFalse();
+    }
+
+    @Test
+    public void put_ThreadCountryCodeString_returnsString() throws Exception {
+        mThreadPersistentSettings.put(THREAD_COUNTRY_CODE.key, TEST_COUNTRY_CODE);
+
+        assertThat(mThreadPersistentSettings.get(THREAD_COUNTRY_CODE)).isEqualTo(TEST_COUNTRY_CODE);
+        mThreadPersistentSettings.initialize();
+        assertThat(mThreadPersistentSettings.get(THREAD_COUNTRY_CODE)).isEqualTo(TEST_COUNTRY_CODE);
+    }
+
+    @Test
+    public void put_ThreadCountryCodeNull_returnsNull() throws Exception {
+        mThreadPersistentSettings.put(THREAD_COUNTRY_CODE.key, null);
+
+        assertThat(mThreadPersistentSettings.get(THREAD_COUNTRY_CODE)).isNull();
+        mThreadPersistentSettings.initialize();
+        assertThat(mThreadPersistentSettings.get(THREAD_COUNTRY_CODE)).isNull();
+    }
+
+    @Test
+    public void putConfiguration_sameValues_returnsFalse() {
+        ThreadConfiguration configuration =
+                new ThreadConfiguration.Builder()
+                        .setNat64Enabled(true)
+                        .setDhcp6PdEnabled(true)
+                        .build();
+        mThreadPersistentSettings.putConfiguration(configuration);
+
+        assertThat(mThreadPersistentSettings.putConfiguration(configuration)).isFalse();
+    }
+
+    @Test
+    public void putConfiguration_differentValues_returnsTrue() {
+        ThreadConfiguration configuration1 =
+                new ThreadConfiguration.Builder()
+                        .setNat64Enabled(false)
+                        .setDhcp6PdEnabled(false)
+                        .build();
+        mThreadPersistentSettings.putConfiguration(configuration1);
+        ThreadConfiguration configuration2 =
+                new ThreadConfiguration.Builder()
+                        .setNat64Enabled(true)
+                        .setDhcp6PdEnabled(true)
+                        .build();
+
+        assertThat(mThreadPersistentSettings.putConfiguration(configuration2)).isTrue();
+    }
+
+    @Test
+    public void putConfiguration_nat64Enabled_valuesUpdatedAndPersisted() throws Exception {
+        ThreadConfiguration configuration =
+                new ThreadConfiguration.Builder().setNat64Enabled(true).build();
+        mThreadPersistentSettings.putConfiguration(configuration);
+
+        assertThat(mThreadPersistentSettings.getConfiguration()).isEqualTo(configuration);
+        mThreadPersistentSettings.initialize();
+        assertThat(mThreadPersistentSettings.getConfiguration()).isEqualTo(configuration);
+    }
+
+    @Test
+    public void putConfiguration_dhcp6PdEnabled_valuesUpdatedAndPersisted() throws Exception {
+        ThreadConfiguration configuration =
+                new ThreadConfiguration.Builder().setDhcp6PdEnabled(true).build();
+        mThreadPersistentSettings.putConfiguration(configuration);
+
+        assertThat(mThreadPersistentSettings.getConfiguration()).isEqualTo(configuration);
+        mThreadPersistentSettings.initialize();
+        assertThat(mThreadPersistentSettings.getConfiguration()).isEqualTo(configuration);
+    }
+
+    private AtomicFile createAtomicFile() throws Exception {
+        return new AtomicFile(mTemporaryFolder.newFile());
     }
 
     private byte[] createXmlForParsing(String key, Boolean value) throws Exception {
@@ -133,19 +210,9 @@
         return outputStream.toByteArray();
     }
 
-    private void setupAtomicFileMockForRead(byte[] dataToRead) throws Exception {
-        FileInputStream is = mock(FileInputStream.class);
-        when(mAtomicFile.openRead()).thenReturn(is);
-        when(is.available()).thenReturn(dataToRead.length).thenReturn(0);
-        doAnswer(
-                        invocation -> {
-                            byte[] data = invocation.getArgument(0);
-                            int pos = invocation.getArgument(1);
-                            if (pos == dataToRead.length) return 0; // read complete.
-                            System.arraycopy(dataToRead, 0, data, 0, dataToRead.length);
-                            return dataToRead.length;
-                        })
-                .when(is)
-                .read(any(), anyInt(), anyInt());
+    private void setupAtomicFileForRead(byte[] dataToRead) throws Exception {
+        try (FileOutputStream outputStream = new FileOutputStream(mAtomicFile.getBaseFile())) {
+            outputStream.write(dataToRead);
+        }
     }
 }
diff --git a/thread/tests/utils/Android.bp b/thread/tests/utils/Android.bp
index 24e9bb9..726ec9d 100644
--- a/thread/tests/utils/Android.bp
+++ b/thread/tests/utils/Android.bp
@@ -27,6 +27,7 @@
         "net-tests-utils",
         "net-utils-device-common",
         "net-utils-device-common-bpf",
+        "net-utils-device-common-struct-base",
     ],
     srcs: [
         "src/**/*.java",
diff --git a/thread/tests/utils/src/android/net/thread/utils/TapTestNetworkTracker.java b/thread/tests/utils/src/android/net/thread/utils/TapTestNetworkTracker.java
index 43f177d..b586a19 100644
--- a/thread/tests/utils/src/android/net/thread/utils/TapTestNetworkTracker.java
+++ b/thread/tests/utils/src/android/net/thread/utils/TapTestNetworkTracker.java
@@ -62,6 +62,7 @@
     private final Looper mLooper;
     private TestNetworkInterface mInterface;
     private TestableNetworkAgent mAgent;
+    private Network mNetwork;
     private final TestableNetworkCallback mNetworkCallback;
     private final ConnectivityManager mConnectivityManager;
 
@@ -91,6 +92,11 @@
         return mInterface.getInterfaceName();
     }
 
+    /** Returns the {@link android.net.Network} of the test network. */
+    public Network getNetwork() {
+        return mNetwork;
+    }
+
     private void setUpTestNetwork() throws Exception {
         mInterface = mContext.getSystemService(TestNetworkManager.class).createTapInterface();
 
@@ -105,13 +111,13 @@
                         newNetworkCapabilities(),
                         lp,
                         new NetworkAgentConfig.Builder().build());
-        final Network network = mAgent.register();
+        mNetwork = mAgent.register();
         mAgent.markConnected();
 
         PollingCheck.check(
                 "No usable address on interface",
                 TIMEOUT.toMillis(),
-                () -> hasUsableAddress(network, getInterfaceName()));
+                () -> hasUsableAddress(mNetwork, getInterfaceName()));
 
         lp.setLinkAddresses(makeLinkAddresses());
         mAgent.sendLinkProperties(lp);
diff --git a/thread/tests/utils/src/android/net/thread/utils/ThreadFeatureCheckerRule.java b/thread/tests/utils/src/android/net/thread/utils/ThreadFeatureCheckerRule.java
new file mode 100644
index 0000000..38a6e90
--- /dev/null
+++ b/thread/tests/utils/src/android/net/thread/utils/ThreadFeatureCheckerRule.java
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.net.thread.utils;
+
+import static com.android.testutils.DeviceInfoUtils.isKernelVersionAtLeast;
+
+import static org.junit.Assume.assumeTrue;
+
+import android.content.Context;
+import android.os.SystemProperties;
+import android.os.VintfRuntimeInfo;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+import java.lang.annotation.Annotation;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * A rule used to skip Thread tests when the device doesn't support a specific feature indicated by
+ * {@code ThreadFeatureCheckerRule.Requires*}.
+ */
+public final class ThreadFeatureCheckerRule implements TestRule {
+    private static final String KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED = "5.15.0";
+    private static final int KERNEL_ANDROID_VERSION_MULTICAST_ROUTING_SUPPORTED = 14;
+
+    /**
+     * Annotates a test class or method requires the Thread feature to run.
+     *
+     * <p>In Absence of the Thread feature, the test class or method will be ignored.
+     */
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.METHOD, ElementType.TYPE})
+    public @interface RequiresThreadFeature {}
+
+    /**
+     * Annotates a test class or method requires the kernel IPv6 multicast routing feature to run.
+     *
+     * <p>In Absence of the multicast routing feature, the test class or method will be ignored.
+     */
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.METHOD, ElementType.TYPE})
+    public @interface RequiresIpv6MulticastRouting {}
+
+    /**
+     * Annotates a test class or method requires the simulation Thread device (i.e. ot-cli-ftd) to
+     * run.
+     *
+     * <p>In Absence of the simulation device, the test class or method will be ignored.
+     */
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.METHOD, ElementType.TYPE})
+    public @interface RequiresSimulationThreadDevice {}
+
+    @Override
+    public Statement apply(final Statement base, Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                if (hasAnnotation(RequiresThreadFeature.class, description)) {
+                    assumeTrue(
+                            "Skipping test because the Thread feature is unavailable",
+                            hasThreadFeature());
+                }
+
+                if (hasAnnotation(RequiresIpv6MulticastRouting.class, description)) {
+                    assumeTrue(
+                            "Skipping test because kernel IPv6 multicast routing is unavailable",
+                            hasIpv6MulticastRouting());
+                }
+
+                if (hasAnnotation(RequiresSimulationThreadDevice.class, description)) {
+                    assumeTrue(
+                            "Skipping test because simulation Thread device is unavailable",
+                            hasSimulationThreadDevice());
+                }
+
+                base.evaluate();
+            }
+        };
+    }
+
+    /** Returns {@code true} if a test method or the test class is annotated with annotation. */
+    private <T extends Annotation> boolean hasAnnotation(
+            Class<T> annotationClass, Description description) {
+        // Method annotation
+        boolean hasAnnotation = description.getAnnotation(annotationClass) != null;
+
+        // Class annotation
+        Class<?> clazz = description.getTestClass();
+        while (!hasAnnotation && clazz != Object.class) {
+            hasAnnotation |= clazz.getAnnotation(annotationClass) != null;
+            clazz = clazz.getSuperclass();
+        }
+
+        return hasAnnotation;
+    }
+
+    /** Returns {@code true} if this device has the Thread feature supported. */
+    private static boolean hasThreadFeature() {
+        final Context context = ApplicationProvider.getApplicationContext();
+
+        // Use service name rather than `ThreadNetworkManager.class` to avoid
+        // `ClassNotFoundException` on U- devices.
+        return context.getSystemService("thread_network") != null;
+    }
+
+    /**
+     * Returns {@code true} if this device has the kernel IPv6 multicast routing feature enabled.
+     */
+    private static boolean hasIpv6MulticastRouting() {
+        // The kernel IPv6 multicast routing (i.e. IPV6_MROUTE) is enabled on kernel version
+        // android14-5.15.0 and later
+        return isKernelVersionAtLeast(KERNEL_VERSION_MULTICAST_ROUTING_SUPPORTED)
+                && isKernelAndroidVersionAtLeast(
+                        KERNEL_ANDROID_VERSION_MULTICAST_ROUTING_SUPPORTED);
+    }
+
+    /**
+     * Returns {@code true} if the android version in the kernel version of this device is equal to
+     * or larger than the given {@code minVersion}.
+     */
+    private static boolean isKernelAndroidVersionAtLeast(int minVersion) {
+        final String osRelease = VintfRuntimeInfo.getOsRelease();
+        final Pattern pattern = Pattern.compile("android(\\d+)");
+        Matcher matcher = pattern.matcher(osRelease);
+
+        if (matcher.find()) {
+            int version = Integer.parseInt(matcher.group(1));
+            return (version >= minVersion);
+        }
+        return false;
+    }
+
+    /** Returns {@code true} if the simulation Thread device is supported. */
+    private static boolean hasSimulationThreadDevice() {
+        // Simulation radio is supported on only Cuttlefish
+        return SystemProperties.get("ro.product.model").startsWith("Cuttlefish");
+    }
+}
diff --git a/tools/Android.bp b/tools/Android.bp
index 9216b5b..2c2ed14 100644
--- a/tools/Android.bp
+++ b/tools/Android.bp
@@ -83,6 +83,8 @@
     ],
     data: [
         "testdata/test-jarjar-excludes.txt",
+        // txt with Test classes to test they aren't included when added to jarjar excludes
+        "testdata/test-jarjar-excludes-testclass.txt",
         // two unsupportedappusage lists with different classes to test using multiple lists
         "testdata/test-unsupportedappusage.txt",
         "testdata/test-other-unsupportedappusage.txt",
diff --git a/tools/aospify_device.sh b/tools/aospify_device.sh
new file mode 100755
index 0000000..0176093
--- /dev/null
+++ b/tools/aospify_device.sh
@@ -0,0 +1,176 @@
+#!/bin/bash
+
+# Script to swap core networking modules in a GMS userdebug device to AOSP modules, by remounting
+# the system partition and replacing module prebuilts. This is only to be used for local testing,
+# and should only be used on userdebug devices that support "adb root" and remounting the system
+# partition using overlayfs. The setup wizard should be cleared before running the script.
+#
+# Usage: aospify_device.sh [device_serial]
+#
+# Reset with "adb enable-verity", then wiping data (from Settings, or:
+# "adb reboot bootloader && fastboot erase userdata && fastboot reboot").
+# Some devices output errors like "Overlayfs teardown failed" on "enable-verity" but it still works
+# (/mnt/scratch should be deleted).
+#
+# This applies to NetworkStack, CaptivePortalLogin, dnsresolver, tethering, cellbroadcast modules,
+# which generally need to be preloaded together (core networking modules + cellbroadcast which
+# shares its certificates with NetworkStack and CaptivePortalLogin)
+#
+# This allows device manufacturers to test their changes in AOSP modules, running them on their
+# own device builds, before contributing contributing the patches to AOSP. After running this script
+# once AOSP modules can be quickly built and updated on the prepared device with:
+#   m NetworkStack
+#   adb install --staged $ANDROID_PRODUCT_OUT/system/priv-app/NetworkStack/NetworkStack.apk \
+#   adb reboot
+# or for APEX modules:
+#   m com.android.tethering deapexer
+#   $ANDROID_HOST_OUT/bin/deapexer decompress --input $ANDROID_PRODUCT_OUT/system/apex/com.android.tethering.capex --output /tmp/decompressed.apex
+#   adb install /tmp/decompressed.apex && adb reboot
+#
+# This has been tested on Android T and Android U Pixel devices. On recent (U+) devices, it requires
+# setting a released target SDK (for example target_sdk_version: "34") in
+# packages/modules/Connectivity/service/ServiceConnectivityResources/Android.bp before building.
+set -e
+
+function push_apex {
+    local original_apex_name=$1
+    local aosp_apex_name=$2
+    if $ADB_CMD shell ls /system/apex/$original_apex_name.capex 1>/dev/null 2>/dev/null; then
+        $ADB_CMD shell rm /system/apex/$original_apex_name.capex
+        $ADB_CMD push $ANDROID_PRODUCT_OUT/system/apex/$aosp_apex_name.capex /system/apex/
+    else
+        rm -f /tmp/decompressed_$aosp_apex_name.apex
+        $ANDROID_HOST_OUT/bin/deapexer decompress --input $ANDROID_PRODUCT_OUT/system/apex/$aosp_apex_name.capex --output /tmp/decompressed_$aosp_apex_name.apex
+        if ! $ADB_CMD shell ls /system/apex/$original_apex_name.apex 1>/dev/null 2>/dev/null; then
+            # Filename observed on some phones, even though it is not actually compressed
+            original_apex_name=${original_apex_name}_compressed
+        fi
+        $ADB_CMD shell rm /system/apex/$original_apex_name.apex
+        $ADB_CMD push /tmp/decompressed_$aosp_apex_name.apex /system/apex/$aosp_apex_name.apex
+        rm /tmp/decompressed_$aosp_apex_name.apex
+    fi
+}
+
+function push_apk {
+    local app_type=$1
+    local original_apk_name=$2
+    local aosp_apk_name=$3
+    $ADB_CMD shell rm /system/$app_type/$original_apk_name/$original_apk_name*.apk
+    $ADB_CMD push $ANDROID_PRODUCT_OUT/system/$app_type/$aosp_apk_name/$aosp_apk_name.apk /system/$app_type/$original_apk_name/
+}
+
+NETWORKSTACK_AOSP_SEPOLICY_KEY="<signer signature=\"308205dc308203c4a003020102020900fc6cb0d8a6fdd16\
+8300d06092a864886f70d01010b0500308181310b30090603550406130255533113301106035504080c0a43616c69666f72\
+6e69613116301406035504070c0d4d6f756e7461696e20566965773110300e060355040a0c07416e64726f69643110300e0\
+60355040b0c07416e64726f69643121301f06035504030c18636f6d2e616e64726f69642e6e6574776f726b737461636b30\
+20170d3139303231323031343632305a180f34373537303130383031343632305a308181310b30090603550406130255533\
+113301106035504080c0a43616c69666f726e69613116301406035504070c0d4d6f756e7461696e20566965773110300e06\
+0355040a0c07416e64726f69643110300e060355040b0c07416e64726f69643121301f06035504030c18636f6d2e616e647\
+26f69642e6e6574776f726b737461636b30820222300d06092a864886f70d01010105000382020f003082020a0282020100\
+bb71f5137ff0b2d757acc2ca3d378e0f8de11090d5caf3d49e314d35c283b778b02d792d8eba440364ca970985441660f0b\
+c00afbc63dd611b1bf51ad28a1edd21e0048f548b80f8bd113e25682822f57dab8273afaf12c64d19a0c6be238f3e66ddc7\
+9b10fd926931e3ee60a7bf618644da3c2c4fc428139d45d27beda7fe45e30075b493ead6ec01cdd55d931c0a657e2e59742\
+ca632b6dc3842a2deb7d22443c809291d7a549203ae6ae356582a4ca23f30f0549c4ec8408a75278e95c69e8390ad5280bc\
+efaef6f1309a41bd9f3bfb5d12dca7e79ec6fd6848193fa9ab728224887b4f93e985ec7cbf6401b0e863a4b91c05d046f04\
+0fe954004b1645954fcb4114cee1e8b64b47d719a19ef4c001cb183f7f3e166e43f56d68047c3440da34fdf529d44274b8b\
+2f6afb345091ad8ad4b93bd5c55d52286a5d3c157465db8ddf62e7cdb6b10fb18888046afdd263ae6f2125d9065759c7e42\
+f8610a6746edbdc547d4301612eeec3c3cbd124dececc8d38b20e73b13f24ee7ca13a98c5f61f0c81b07d2b519749bc2bcb\
+9e0949aef6c118a3e8125e6ab57fce46bb091a66740e10b31c740b891900c0ecda9cc69ecb4f3369998b175106dd0a4ffd7\
+024eb7e75fedd1a5b131d0bb2b40c63491e3cf86b8957b21521b3a96ed1376a51a6ac697866b0256dee1bcd9ab9a188bf4c\
+ed80b59a5f24c2da9a55eb7b0e502116e30203010001a3533051301d0603551d0e041604149383c92cfbf099d5c47b0c365\
+7d8622a084b72e1301f0603551d230418301680149383c92cfbf099d5c47b0c3657d8622a084b72e1300f0603551d130101\
+ff040530030101ff300d06092a864886f70d01010b050003820201006a0501382fde2a6b8f70c60cd1b8ee4f788718c288b\
+170258ef3a96230b65005650d6a4c42a59a97b2ddec502413e7b438fbd060363d74b74a232382a7f77fd3da34e38f79fad0\
+35a8b472c5cff365818a0118d87fa1e31cc7ed4befd27628760c290980c3cc3b7ff0cfd01b75ff1fcc83e981b5b25a54d85\
+b68a80424ac26015fb3a4c754969a71174c0bc283f6c88191dced609e245f5938ffd0ad799198e2d0bf6342221c1b0a5d33\
+2ed2fffc668982cabbcb7d3b630ff8476e5c84ac0ad37adf9224035200039f95ec1fa95bf83796c0e8986135cee2dcaef19\
+0b249855a7e7397d4a0bf17ea63d978589c6b48118a381fffbd790c44d80233e2e35292a3b5533ca3f2cc173f85cf904adf\
+e2e4e2183dc1eba0ebae07b839a81ff1bc92e292550957c8599af21e9c0497b9234ce345f3f508b1cc872aa55ddb5e773c5\
+c7dd6577b9a8b6daed20ae1ff4b8206fd9f5c8f5a22ba1980bef01ae6fcb2659b97ad5b985fa81c019ffe008ddd9c8130c0\
+6fc6032b2149c2209fc438a7e8c3b20ce03650ad31c4ee48f169777a0ae182b72ca31b81540f61f167d8d7adf4f6bb2330f\
+f5c24037245000d8172c12ab5d5aa5890b8b12db0f0e7296264eb66e7f9714c31004649fb4b864005f9c43c80db3f6de52f\
+d44d6e2036bfe7f5807156ed5ab591d06fd6bb93ba4334ea2739af8b41ed2686454e60b666d10738bb7ba88001\">\
+<seinfo value=\"network_stack\"\/><\/signer>"
+
+DEVICE=$1
+ADB_CMD="adb -s $DEVICE"
+
+if [ -z "$DEVICE" ]; then
+    echo "Usage: aospify_device.sh [device_serial]"
+    exit 1
+fi
+
+if [ -z "$ANDROID_BUILD_TOP" ]; then
+    echo "Run build/envsetup.sh first to set ANDROID_BUILD_TOP"
+    exit 1
+fi
+
+if ! $ADB_CMD wait-for-device shell pm path com.google.android.networkstack 1>/dev/null 2>/dev/null; then
+    echo "This device is already not using GMS modules"
+    exit 1
+fi
+
+read -p "This script is only for test purposes and highly likely to make your device unusable. \
+Continue ? <y/N>" prompt
+if [[ $prompt != "y" ]]
+then
+    exit 0
+fi
+
+cd $ANDROID_BUILD_TOP
+source build/envsetup.sh
+lunch aosp_arm64-trunk_staging-userdebug
+m NetworkStack CaptivePortalLogin com.android.tethering com.android.cellbroadcast \
+    com.android.resolv deapexer \
+    out/target/product/generic_arm64/system/etc/selinux/plat_mac_permissions.xml \
+    out/target/product/generic_arm64/system/etc/permissions/com.android.networkstack.xml
+
+$ADB_CMD root
+$ADB_CMD remount
+$ADB_CMD reboot
+
+echo "Waiting for boot..."
+until [[ $($ADB_CMD wait-for-device shell getprop sys.boot_completed) == 1 ]]; do
+    sleep 1;
+done
+
+$ADB_CMD root
+$ADB_CMD remount
+
+push_apk priv-app NetworkStackGoogle NetworkStack
+push_apk app CaptivePortalLoginGoogle CaptivePortalLogin
+push_apex com.google.android.tethering com.android.tethering
+push_apex com.google.android.cellbroadcast com.android.cellbroadcast
+push_apex com.google.android.resolv com.android.resolv
+
+# Replace the network_stack key used to set its sepolicy context
+rm -f /tmp/pulled_plat_mac_permissions.xml
+$ADB_CMD pull /system/etc/selinux/plat_mac_permissions.xml /tmp/pulled_plat_mac_permissions.xml
+sed_replace='s/<signer signature="[0-9a-fA-F]+"><seinfo value="network_stack"\/><\/signer>/'$NETWORKSTACK_AOSP_SEPOLICY_KEY'/'
+sed -E "$sed_replace" /tmp/pulled_plat_mac_permissions.xml |
+    $ADB_CMD shell 'cat > /system/etc/selinux/plat_mac_permissions.xml'
+rm /tmp/pulled_plat_mac_permissions.xml
+
+# Update the networkstack privapp-permissions allowlist
+rm -f /tmp/pulled_privapp-permissions.xml
+networkstack_permissions=/system/etc/permissions/GoogleNetworkStack_permissions.xml
+if ! $ADB_CMD shell ls $networkstack_permissions 1>/dev/null 2>/dev/null; then
+    networkstack_permissions=/system/etc/permissions/privapp-permissions-google.xml
+fi
+
+$ADB_CMD pull $networkstack_permissions /tmp/pulled_privapp-permissions.xml
+
+# Remove last </permission> line, and the permissions for com.google.android.networkstack
+sed -nE '1,/<\/permissions>/p' /tmp/pulled_privapp-permissions.xml \
+    | sed -E '/com.google.android.networkstack/,/privapp-permissions/d' > /tmp/modified_privapp-permissions.xml
+# Add the AOSP permissions and re-add the </permissions> line
+sed -nE '/com.android.networkstack/,/privapp-permissions/p' $ANDROID_PRODUCT_OUT/system/etc/permissions/com.android.networkstack.xml \
+    >> /tmp/modified_privapp-permissions.xml
+echo '</permissions>' >> /tmp/modified_privapp-permissions.xml
+
+$ADB_CMD push /tmp/modified_privapp-permissions.xml $networkstack_permissions
+
+rm /tmp/pulled_privapp-permissions.xml /tmp/modified_privapp-permissions.xml
+
+echo "Done modifying, rebooting"
+$ADB_CMD reboot
\ No newline at end of file
diff --git a/tools/gen_jarjar_test.py b/tools/gen_jarjar_test.py
index f5bf499..12038e9 100644
--- a/tools/gen_jarjar_test.py
+++ b/tools/gen_jarjar_test.py
@@ -84,6 +84,31 @@
             'rule test.utils.TestUtilClass$TestInnerClassTest jarjar.prefix.@0\n',
             'rule test.utils.TestUtilClass$TestInnerClassTest$* jarjar.prefix.@0\n'], lines)
 
+    def test_gen_rules_repeated_testclass_excluded(self):
+        args = gen_jarjar.parse_arguments([
+            "jarjar-rules-generator-testjavalib.jar",
+            "--prefix", "jarjar.prefix",
+            "--output", "test-output-rules.txt",
+            "--apistubs", "framework-connectivity.stubs.module_lib.jar",
+            "--unsupportedapi", ":testdata/test-unsupportedappusage.txt",
+            "--excludes", "testdata/test-jarjar-excludes-testclass.txt",
+        ])
+        gen_jarjar.make_jarjar_rules(args)
+
+        with open(args.output) as out:
+            lines = out.readlines()
+
+        self.maxDiff = None
+        self.assertListEqual([
+            'rule android.net.IpSecTransform jarjar.prefix.@0\n',
+            'rule test.unsupportedappusage.OtherUnsupportedUsageClass jarjar.prefix.@0\n',
+            'rule test.unsupportedappusage.OtherUnsupportedUsageClassTest jarjar.prefix.@0\n',
+            'rule test.unsupportedappusage.OtherUnsupportedUsageClassTest$* jarjar.prefix.@0\n',
+            'rule test.utils.TestUtilClass jarjar.prefix.@0\n',
+            'rule test.utils.TestUtilClass$TestInnerClass jarjar.prefix.@0\n',
+            'rule test.utils.TestUtilClass$TestInnerClassTest jarjar.prefix.@0\n',
+            'rule test.utils.TestUtilClass$TestInnerClassTest$* jarjar.prefix.@0\n'], lines)
+
 
 if __name__ == '__main__':
     # Need verbosity=2 for the test results parser to find results
diff --git a/tools/testdata/test-jarjar-excludes-testclass.txt b/tools/testdata/test-jarjar-excludes-testclass.txt
new file mode 100644
index 0000000..f7cc2cb
--- /dev/null
+++ b/tools/testdata/test-jarjar-excludes-testclass.txt
@@ -0,0 +1,7 @@
+# Test file for excluded classes
+test\.jarj.rexcluded\.JarjarExcludedCla.s
+test\.jarjarexcluded\.JarjarExcludedClass\$TestInnerCl.ss
+
+# Exclude actual test files
+test\.utils\.TestUtilClassTest
+android\.net\.IpSecTransformTest
\ No newline at end of file