diff --git a/Cronet/TEST_MAPPING b/Cronet/TEST_MAPPING
index b1f3088..9bc5c00 100644
--- a/Cronet/TEST_MAPPING
+++ b/Cronet/TEST_MAPPING
@@ -1,7 +1,7 @@
 {
   "presubmit": [
     {
-      "name": "CtsCronetTestCases"
+      "name": "CtsNetHttpTestCases"
     }
   ]
 }
diff --git a/Cronet/tests/cts/Android.bp b/Cronet/tests/cts/Android.bp
index d10c68c..68e3cf1 100644
--- a/Cronet/tests/cts/Android.bp
+++ b/Cronet/tests/cts/Android.bp
@@ -18,10 +18,36 @@
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
+// cronet_test_java_defaults can be used to specify a java_defaults target that
+// either enables or disables Cronet tests. This is used to disable Cronet
+// tests on tm-mainline-prod where the required APIs are not present.
+cronet_test_java_defaults = "CronetTestJavaDefaultsEnabled"
+// This is a placeholder comment to avoid merge conflicts
+// as cronet_test_java_defaults may have different values
+// depending on the branch
+
+java_defaults {
+    name: "CronetTestJavaDefaultsEnabled",
+    enabled: true,
+}
+
+java_defaults {
+    name: "CronetTestJavaDefaultsDisabled",
+    enabled: false,
+}
+
+java_defaults {
+    name: "CronetTestJavaDefaults",
+    defaults: [cronet_test_java_defaults],
+}
+
 android_test {
-    name: "CtsCronetTestCases",
+    name: "CtsNetHttpTestCases",
     compile_multilib: "both", // Include both the 32 and 64 bit versions
-    defaults: ["cts_defaults"],
+    defaults: [
+        "CronetTestJavaDefaults",
+        "cts_defaults",
+    ],
     sdk_version: "test_current",
     srcs: [
         "src/**/*.java",
@@ -39,7 +65,7 @@
         "android.test.base",
         "android.test.mock",
         "androidx.annotation_annotation",
-        "framework-cronet",
+        "framework-tethering",
         "org.apache.http.legacy",
     ],
 
diff --git a/Cronet/tests/cts/AndroidManifest.xml b/Cronet/tests/cts/AndroidManifest.xml
index 5a92dea..eaa24aa 100644
--- a/Cronet/tests/cts/AndroidManifest.xml
+++ b/Cronet/tests/cts/AndroidManifest.xml
@@ -25,7 +25,6 @@
 
     <application android:networkSecurityConfig="@xml/network_security_config">
         <uses-library android:name="android.test.runner"/>
-        <uses-library android:name="framework-cronet"/>
     </application>
 
     <instrumentation
diff --git a/Cronet/tests/cts/AndroidTest.xml b/Cronet/tests/cts/AndroidTest.xml
index d2422f1..e0421fd 100644
--- a/Cronet/tests/cts/AndroidTest.xml
+++ b/Cronet/tests/cts/AndroidTest.xml
@@ -23,14 +23,14 @@
     <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="CtsCronetTestCases.apk" />
+        <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 CtsCronetTestcasess in MTS if the Tethering Mainline module is installed. -->
+    <!-- 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" />
diff --git a/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java b/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java
index 2898f54..598be0e 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java
+++ b/Cronet/tests/cts/src/android/net/http/cts/CronetUrlRequestTest.java
@@ -22,7 +22,12 @@
 
 import android.content.Context;
 import android.net.ConnectivityManager;
+import android.net.http.HttpEngine;
+import android.net.http.UrlRequest;
+import android.net.http.UrlRequest.Status;
+import android.net.http.UrlResponseInfo;
 import android.net.http.cts.util.CronetCtsTestServer;
+import android.net.http.cts.util.TestStatusListener;
 import android.net.http.cts.util.TestUrlRequestCallback;
 import android.net.http.cts.util.TestUrlRequestCallback.ResponseStep;
 
@@ -30,9 +35,6 @@
 import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.runner.AndroidJUnit4;
 
-import org.chromium.net.CronetEngine;
-import org.chromium.net.UrlRequest;
-import org.chromium.net.UrlResponseInfo;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -42,7 +44,8 @@
 public class CronetUrlRequestTest {
     private static final String TAG = CronetUrlRequestTest.class.getSimpleName();
 
-    @NonNull private CronetEngine mCronetEngine;
+    @NonNull private HttpEngine mHttpEngine;
+    @NonNull private TestUrlRequestCallback mCallback;
     @NonNull private ConnectivityManager mCm;
     @NonNull private CronetCtsTestServer mTestServer;
 
@@ -50,18 +53,19 @@
     public void setUp() throws Exception {
         Context context = InstrumentationRegistry.getInstrumentation().getContext();
         mCm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
-        CronetEngine.Builder builder = new CronetEngine.Builder(context);
-        builder.enableHttpCache(CronetEngine.Builder.HTTP_CACHE_IN_MEMORY, 100 * 1024)
-                .enableHttp2(true)
-                // .enableBrotli(true)
-                .enableQuic(true);
-        mCronetEngine = builder.build();
+        HttpEngine.Builder builder = new HttpEngine.Builder(context);
+        builder.setEnableHttpCache(HttpEngine.Builder.HTTP_CACHE_IN_MEMORY, 100 * 1024)
+                .setEnableHttp2(true)
+                // .setEnableBrotli(true)
+                .setEnableQuic(true);
+        mHttpEngine = builder.build();
+        mCallback = new TestUrlRequestCallback();
         mTestServer = new CronetCtsTestServer(context);
     }
 
     @After
     public void tearDown() throws Exception {
-        mCronetEngine.shutdown();
+        mHttpEngine.shutdown();
         mTestServer.shutdown();
     }
 
@@ -73,21 +77,33 @@
         assertNotNull("This test requires a working Internet connection", mCm.getActiveNetwork());
     }
 
+    private UrlRequest buildUrlRequest(String url) {
+        return mHttpEngine.newUrlRequestBuilder(url, mCallback, mCallback.getExecutor()).build();
+    }
+
     @Test
     public void testUrlRequestGet_CompletesSuccessfully() throws Exception {
         assertHasTestableNetworks();
         String url = mTestServer.getSuccessUrl();
-        TestUrlRequestCallback callback = new TestUrlRequestCallback();
-        UrlRequest.Builder builder =
-                mCronetEngine.newUrlRequestBuilder(url, callback, callback.getExecutor());
-        builder.build().start();
+        UrlRequest request = buildUrlRequest(url);
+        request.start();
 
-        callback.expectCallback(ResponseStep.ON_SUCCEEDED);
+        mCallback.expectCallback(ResponseStep.ON_SUCCEEDED);
 
-        UrlResponseInfo info = callback.mResponseInfo;
+        UrlResponseInfo info = mCallback.mResponseInfo;
         assertEquals(
                 "Unexpected http status code from " + url + ".", 200, info.getHttpStatusCode());
         assertGreaterThan(
                 "Received byte from " + url + " is 0.", (int) info.getReceivedByteCount(), 0);
     }
+
+    @Test
+    public void testUrlRequestStatus_InvalidBeforeRequestStarts() throws Exception {
+        UrlRequest request = buildUrlRequest(mTestServer.getSuccessUrl());
+        // 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);
+    }
 }
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
new file mode 100644
index 0000000..e526c7d
--- /dev/null
+++ b/Cronet/tests/cts/src/android/net/http/cts/util/TestStatusListener.kt
@@ -0,0 +1,38 @@
+/*
+ * 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
index c7143f5..0b9e90f 100644
--- a/Cronet/tests/cts/src/android/net/http/cts/util/TestUrlRequestCallback.java
+++ b/Cronet/tests/cts/src/android/net/http/cts/util/TestUrlRequestCallback.java
@@ -24,15 +24,14 @@
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+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 org.chromium.net.CallbackException;
-import org.chromium.net.CronetException;
-import org.chromium.net.InlineExecutionProhibitedException;
-import org.chromium.net.UrlRequest;
-import org.chromium.net.UrlResponseInfo;
-
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.concurrent.ExecutorService;
@@ -50,7 +49,7 @@
     public ArrayList<UrlResponseInfo> mRedirectResponseInfoList = new ArrayList<>();
     public ArrayList<String> mRedirectUrlList = new ArrayList<>();
     public UrlResponseInfo mResponseInfo;
-    public CronetException mError;
+    public HttpException mError;
 
     public ResponseStep mResponseStep = ResponseStep.NOTHING;
 
@@ -89,7 +88,7 @@
     // Signaled on each step when mAutoAdvance is false.
     private final ConditionVariable mStepBlock = new ConditionVariable();
 
-    // Executor Service for Cronet callbacks.
+    // Executor Service for Http callbacks.
     private final ExecutorService mExecutorService;
     private Thread mExecutorThread;
 
@@ -349,7 +348,7 @@
     }
 
     @Override
-    public void onFailed(UrlRequest request, UrlResponseInfo info, CronetException error) {
+    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) {
diff --git a/OWNERS_core_networking b/OWNERS_core_networking
index 172670e..6d17476 100644
--- a/OWNERS_core_networking
+++ b/OWNERS_core_networking
@@ -1,4 +1,3 @@
-chenbruce@google.com
 chiachangwang@google.com
 cken@google.com
 huangaaron@google.com
diff --git a/Tethering/AndroidManifest.xml b/Tethering/AndroidManifest.xml
index b832e16..23467e7 100644
--- a/Tethering/AndroidManifest.xml
+++ b/Tethering/AndroidManifest.xml
@@ -43,7 +43,9 @@
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
 
+    <!-- Sending non-protected broadcast from system uid is not allowed. -->
     <protected-broadcast android:name="com.android.server.connectivity.tethering.DISABLE_TETHERING" />
+    <protected-broadcast android:name="com.android.server.connectivity.KeepaliveTracker.TCP_POLLING_ALARM" />
 
     <application
         android:process="com.android.networkstack.process"
diff --git a/Tethering/apex/Android.bp b/Tethering/apex/Android.bp
index 8840394..b26911c 100644
--- a/Tethering/apex/Android.bp
+++ b/Tethering/apex/Android.bp
@@ -50,11 +50,40 @@
 // as the above target may have different "enabled" values
 // depending on the branch
 
+// cronet_in_tethering_apex_defaults can be used to specify an apex_defaults target that either
+// enables or disables inclusion of Cronet in the Tethering apex. This is used to disable Cronet
+// on tm-mainline-prod. Note: in order for Cronet APIs to work Cronet must also be enabled
+// by the cronet_java_*_defaults in common/TetheringLib/Android.bp.
+cronet_in_tethering_apex_defaults = "CronetInTetheringApexDefaultsEnabled"
+// This is a placeholder comment to avoid merge conflicts
+// as cronet_apex_defaults may have different values
+// depending on the branch
+
+apex_defaults {
+    name: "CronetInTetheringApexDefaults",
+    defaults: [cronet_in_tethering_apex_defaults],
+}
+
+apex_defaults {
+    name: "CronetInTetheringApexDefaultsEnabled",
+    jni_libs: ["cronet_aml_components_cronet_android_cronet"],
+    arch: {
+        riscv64: {
+            // TODO: remove this when there is a riscv64 libcronet
+            exclude_jni_libs: ["cronet_aml_components_cronet_android_cronet"],
+        },
+    },
+}
+
+apex_defaults {
+    name: "CronetInTetheringApexDefaultsDisabled",
+}
+
 apex {
     name: "com.android.tethering",
     defaults: [
         "ConnectivityApexDefaults",
-        "CronetApexDefaults",
+        "CronetInTetheringApexDefaults",
         "r-launched-apex-module",
     ],
     compile_multilib: "both",
@@ -183,6 +212,7 @@
             "android.app.usage",
             "android.nearby",
             "android.net",
+            "android.net.http",
             "android.net.netstats",
             "android.net.util",
         ],
@@ -197,6 +227,8 @@
             "android.nearby.aidl",
             "android.net.apf",
             "android.net.connectivity",
+            "android.net.http.apihelpers",
+            "android.net.http.internal",
             "android.net.netstats.provider",
             "android.net.nsd",
             "android.net.wear",
diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index 3f4da10..cbdf0c0 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -17,8 +17,6 @@
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
-// TODO: This is currently not used, but is being merged early, so Cronet can be disabled in
-// tm-mainline-prod.
 // Both cronet_java_defaults and cronet_java_prejarjar_defaults can be used to
 // specify a java_defaults target that either enables or disables Cronet. This
 // is used to disable Cronet on tm-mainline-prod.
@@ -29,9 +27,20 @@
 // as cronet_defaults may have different values
 // depending on the branch
 
+// cronet_java_defaults_enabled_srcs is used to specify the srcs of CronetJavaDefaultsEnabled
+// This is required until the external/cronet is auto-merged to tm-mainline-prod and
+// :cronet_aml_api_sources is available
+cronet_java_defaults_enabled_srcs = [":cronet_aml_api_sources"]
+// This is a placeholder comment to avoid merge conflicts
+// as cronet_defaults may have different values
+// depending on the branch
+
 java_sdk_library {
     name: "framework-tethering",
-    defaults: ["framework-module-defaults"],
+    defaults: [
+        "CronetJavaDefaults",
+        "framework-tethering-defaults",
+    ],
     impl_library_visibility: [
         "//packages/modules/Connectivity/Tethering:__subpackages__",
         "//packages/modules/Connectivity/framework",
@@ -57,24 +66,103 @@
         "//packages/modules/NetworkStack/tests:__subpackages__",
         "//packages/modules/Wifi/service/tests/wifitests",
     ],
-
-    srcs: [":framework-tethering-srcs"],
-    libs: ["framework-connectivity.stubs.module_lib"],
     stub_only_libs: ["framework-connectivity.stubs.module_lib"],
+
+    jarjar_rules: ":framework-tethering-jarjar-rules",
+    installable: true,
+
+    hostdex: true, // for hiddenapi check
+    permitted_packages: ["android.net"],
+}
+
+java_defaults {
+    name: "CronetJavaDefaults",
+    defaults: [cronet_java_defaults],
+}
+
+java_defaults {
+    name: "CronetJavaDefaultsEnabled",
+    srcs: cronet_java_defaults_enabled_srcs,
+    libs: [
+        "androidx.annotation_annotation",
+    ],
+    impl_only_static_libs: [
+        "cronet_aml_java",
+    ],
+    // STOPSHIP(b/265674359): fix all Cronet lint warnings and re-enable lint
+    // directly in framework-tethering
+    lint: {
+         enabled: false,
+    },
+    api_lint: {
+        enabled: false,
+    },
+    api_dir: "cronet_enabled/api",
+}
+
+java_defaults {
+  name: "CronetJavaDefaultsDisabled",
+  lint: { strict_updatability_linting: true },
+}
+
+java_defaults {
+  name: "CronetJavaPrejarjarDefaults",
+  defaults: [cronet_java_prejarjar_defaults],
+}
+
+java_defaults {
+  name: "CronetJavaPrejarjarDefaultsDisabled",
+}
+
+java_defaults {
+  name: "CronetJavaPrejarjarDefaultsEnabled",
+  static_libs: [
+    "cronet_aml_api_java",
+    "cronet_aml_java"
+  ],
+}
+
+java_library {
+  name: "framework-tethering-pre-jarjar",
+  defaults: [
+    "framework-tethering-defaults",
+    "CronetJavaPrejarjarDefaults",
+  ],
+}
+
+java_genrule {
+    name: "framework-tethering-jarjar-rules",
+    tool_files: [
+        ":framework-tethering-pre-jarjar{.jar}",
+        ":framework-tethering.stubs.module_lib{.jar}",
+        "jarjar-excludes.txt",
+    ],
+    tools: [
+        "jarjar-rules-generator",
+    ],
+    out: ["framework_tethering_jarjar_rules.txt"],
+    cmd: "$(location jarjar-rules-generator) " +
+        "$(location :framework-tethering-pre-jarjar{.jar}) " +
+        "--apistubs $(location :framework-tethering.stubs.module_lib{.jar}) " + 
+        "--prefix android.net.http.internal " +
+        "--excludes $(location jarjar-excludes.txt) " +
+        "--output $(out)",
+}
+
+java_defaults {
+    name: "framework-tethering-defaults",
+    defaults: ["framework-module-defaults"],
+    srcs: [
+      ":framework-tethering-srcs"
+    ],
+    libs: ["framework-connectivity.stubs.module_lib"],
     aidl: {
         include_dirs: [
             "packages/modules/Connectivity/framework/aidl-export",
         ],
     },
-
-    jarjar_rules: "jarjar-rules.txt",
-    installable: true,
-
-    hostdex: true, // for hiddenapi check
     apex_available: ["com.android.tethering"],
-    permitted_packages: ["android.net"],
     min_sdk_version: "30",
-    lint: { strict_updatability_linting: true },
 }
 
 filegroup {
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/current.txt b/Tethering/common/TetheringLib/cronet_enabled/api/current.txt
new file mode 100644
index 0000000..c0157b7
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/current.txt
@@ -0,0 +1,194 @@
+// Signature format: 2.0
+package android.net.http {
+
+  public abstract class CallbackException extends android.net.http.HttpException {
+    ctor protected CallbackException(String, Throwable);
+  }
+
+  public class ConnectionMigrationOptions {
+    method @Nullable public Boolean getEnableDefaultNetworkMigration();
+    method @Nullable public Boolean getEnablePathDegradationMigration();
+  }
+
+  public static class ConnectionMigrationOptions.Builder {
+    ctor public ConnectionMigrationOptions.Builder();
+    method public android.net.http.ConnectionMigrationOptions build();
+    method public android.net.http.ConnectionMigrationOptions.Builder setEnableDefaultNetworkMigration(boolean);
+    method public android.net.http.ConnectionMigrationOptions.Builder setEnablePathDegradationMigration(boolean);
+  }
+
+  public final class DnsOptions {
+    method @Nullable public Boolean getPersistHostCache();
+    method @Nullable public java.time.Duration getPersistHostCachePeriod();
+  }
+
+  public static final class DnsOptions.Builder {
+    ctor public DnsOptions.Builder();
+    method public android.net.http.DnsOptions build();
+    method public android.net.http.DnsOptions.Builder setPersistHostCache(boolean);
+    method public android.net.http.DnsOptions.Builder setPersistHostCachePeriod(java.time.Duration);
+  }
+
+  public abstract class HttpEngine {
+    method public abstract java.net.URLStreamHandlerFactory createURLStreamHandlerFactory();
+    method public abstract String getVersionString();
+    method public abstract android.net.http.UrlRequest.Builder newUrlRequestBuilder(String, android.net.http.UrlRequest.Callback, java.util.concurrent.Executor);
+    method public abstract java.net.URLConnection openConnection(java.net.URL) throws java.io.IOException;
+    method public abstract void shutdown();
+  }
+
+  public static class HttpEngine.Builder {
+    ctor public HttpEngine.Builder(android.content.Context);
+    method public android.net.http.HttpEngine.Builder addPublicKeyPins(String, java.util.Set<byte[]>, boolean, java.time.Instant);
+    method public android.net.http.HttpEngine.Builder addQuicHint(String, int, int);
+    method public android.net.http.HttpEngine build();
+    method public String getDefaultUserAgent();
+    method public android.net.http.HttpEngine.Builder setConnectionMigrationOptions(android.net.http.ConnectionMigrationOptions);
+    method public android.net.http.HttpEngine.Builder setDnsOptions(android.net.http.DnsOptions);
+    method public android.net.http.HttpEngine.Builder setEnableBrotli(boolean);
+    method public android.net.http.HttpEngine.Builder setEnableHttp2(boolean);
+    method public android.net.http.HttpEngine.Builder setEnableHttpCache(int, long);
+    method public android.net.http.HttpEngine.Builder setEnablePublicKeyPinningBypassForLocalTrustAnchors(boolean);
+    method public android.net.http.HttpEngine.Builder setEnableQuic(boolean);
+    method public android.net.http.HttpEngine.Builder setQuicOptions(android.net.http.QuicOptions);
+    method public android.net.http.HttpEngine.Builder setStoragePath(String);
+    method public android.net.http.HttpEngine.Builder setUserAgent(String);
+    field public static final int HTTP_CACHE_DISABLED = 0; // 0x0
+    field public static final int HTTP_CACHE_DISK = 3; // 0x3
+    field public static final int HTTP_CACHE_DISK_NO_HTTP = 2; // 0x2
+    field public static final int HTTP_CACHE_IN_MEMORY = 1; // 0x1
+  }
+
+  public class HttpException extends java.io.IOException {
+    ctor public HttpException(String, Throwable);
+  }
+
+  public final class InlineExecutionProhibitedException extends java.util.concurrent.RejectedExecutionException {
+    ctor public InlineExecutionProhibitedException();
+  }
+
+  public abstract class NetworkException extends android.net.http.HttpException {
+    ctor public NetworkException(String, Throwable);
+    method public abstract int getErrorCode();
+    method public abstract boolean isImmediatelyRetryable();
+    field public static final int ERROR_ADDRESS_UNREACHABLE = 9; // 0x9
+    field public static final int ERROR_CONNECTION_CLOSED = 5; // 0x5
+    field public static final int ERROR_CONNECTION_REFUSED = 7; // 0x7
+    field public static final int ERROR_CONNECTION_RESET = 8; // 0x8
+    field public static final int ERROR_CONNECTION_TIMED_OUT = 6; // 0x6
+    field public static final int ERROR_HOSTNAME_NOT_RESOLVED = 1; // 0x1
+    field public static final int ERROR_INTERNET_DISCONNECTED = 2; // 0x2
+    field public static final int ERROR_NETWORK_CHANGED = 3; // 0x3
+    field public static final int ERROR_OTHER = 11; // 0xb
+    field public static final int ERROR_QUIC_PROTOCOL_FAILED = 10; // 0xa
+    field public static final int ERROR_TIMED_OUT = 4; // 0x4
+  }
+
+  public abstract class QuicException extends android.net.http.NetworkException {
+    ctor protected QuicException(String, Throwable);
+  }
+
+  public class QuicOptions {
+    method @Nullable public String getHandshakeUserAgent();
+    method @Nullable public Integer getInMemoryServerConfigsCacheSize();
+    method public java.util.Set<java.lang.String> getQuicHostAllowlist();
+  }
+
+  public static class QuicOptions.Builder {
+    ctor public QuicOptions.Builder();
+    method public android.net.http.QuicOptions.Builder addAllowedQuicHost(String);
+    method public android.net.http.QuicOptions build();
+    method public android.net.http.QuicOptions.Builder setHandshakeUserAgent(String);
+    method public android.net.http.QuicOptions.Builder setInMemoryServerConfigsCacheSize(int);
+  }
+
+  public abstract class UploadDataProvider implements java.io.Closeable {
+    ctor public UploadDataProvider();
+    method public void close() throws java.io.IOException;
+    method public abstract long getLength() throws java.io.IOException;
+    method public abstract void read(android.net.http.UploadDataSink, java.nio.ByteBuffer) throws java.io.IOException;
+    method public abstract void rewind(android.net.http.UploadDataSink) throws java.io.IOException;
+  }
+
+  public abstract class UploadDataSink {
+    ctor public UploadDataSink();
+    method public abstract void onReadError(Exception);
+    method public abstract void onReadSucceeded(boolean);
+    method public abstract void onRewindError(Exception);
+    method public abstract void onRewindSucceeded();
+  }
+
+  public abstract class UrlRequest {
+    method public abstract void cancel();
+    method public abstract void followRedirect();
+    method public abstract void getStatus(android.net.http.UrlRequest.StatusListener);
+    method public abstract boolean isDone();
+    method public abstract void read(java.nio.ByteBuffer);
+    method public abstract void start();
+  }
+
+  public abstract static class UrlRequest.Builder {
+    method public abstract android.net.http.UrlRequest.Builder addHeader(String, String);
+    method public abstract android.net.http.UrlRequest.Builder allowDirectExecutor();
+    method public abstract android.net.http.UrlRequest build();
+    method public abstract android.net.http.UrlRequest.Builder disableCache();
+    method public abstract android.net.http.UrlRequest.Builder setHttpMethod(String);
+    method public abstract android.net.http.UrlRequest.Builder setPriority(int);
+    method public abstract android.net.http.UrlRequest.Builder setUploadDataProvider(android.net.http.UploadDataProvider, java.util.concurrent.Executor);
+    field public static final int REQUEST_PRIORITY_HIGHEST = 4; // 0x4
+    field public static final int REQUEST_PRIORITY_IDLE = 0; // 0x0
+    field public static final int REQUEST_PRIORITY_LOW = 2; // 0x2
+    field public static final int REQUEST_PRIORITY_LOWEST = 1; // 0x1
+    field public static final int REQUEST_PRIORITY_MEDIUM = 3; // 0x3
+  }
+
+  public abstract static class UrlRequest.Callback {
+    ctor public UrlRequest.Callback();
+    method public void onCanceled(android.net.http.UrlRequest, android.net.http.UrlResponseInfo);
+    method public abstract void onFailed(android.net.http.UrlRequest, android.net.http.UrlResponseInfo, android.net.http.HttpException);
+    method public abstract void onReadCompleted(android.net.http.UrlRequest, android.net.http.UrlResponseInfo, java.nio.ByteBuffer) throws java.lang.Exception;
+    method public abstract void onRedirectReceived(android.net.http.UrlRequest, android.net.http.UrlResponseInfo, String) throws java.lang.Exception;
+    method public abstract void onResponseStarted(android.net.http.UrlRequest, android.net.http.UrlResponseInfo) throws java.lang.Exception;
+    method public abstract void onSucceeded(android.net.http.UrlRequest, android.net.http.UrlResponseInfo);
+  }
+
+  public static class UrlRequest.Status {
+    field public static final int CONNECTING = 10; // 0xa
+    field public static final int DOWNLOADING_PAC_FILE = 5; // 0x5
+    field public static final int ESTABLISHING_PROXY_TUNNEL = 8; // 0x8
+    field public static final int IDLE = 0; // 0x0
+    field public static final int INVALID = -1; // 0xffffffff
+    field public static final int READING_RESPONSE = 14; // 0xe
+    field public static final int RESOLVING_HOST = 9; // 0x9
+    field public static final int RESOLVING_HOST_IN_PAC_FILE = 7; // 0x7
+    field public static final int RESOLVING_PROXY_FOR_URL = 6; // 0x6
+    field public static final int SENDING_REQUEST = 12; // 0xc
+    field public static final int SSL_HANDSHAKE = 11; // 0xb
+    field public static final int WAITING_FOR_AVAILABLE_SOCKET = 2; // 0x2
+    field public static final int WAITING_FOR_CACHE = 4; // 0x4
+    field public static final int WAITING_FOR_DELEGATE = 3; // 0x3
+    field public static final int WAITING_FOR_RESPONSE = 13; // 0xd
+    field public static final int WAITING_FOR_STALLED_SOCKET_POOL = 1; // 0x1
+  }
+
+  public abstract static class UrlRequest.StatusListener {
+    ctor public UrlRequest.StatusListener();
+    method public abstract void onStatus(int);
+  }
+
+  public abstract class UrlResponseInfo {
+    ctor public UrlResponseInfo();
+    method public abstract java.util.Map<java.lang.String,java.util.List<java.lang.String>> getAllHeaders();
+    method public abstract java.util.List<java.util.Map.Entry<java.lang.String,java.lang.String>> getAllHeadersAsList();
+    method public abstract int getHttpStatusCode();
+    method public abstract String getHttpStatusText();
+    method public abstract String getNegotiatedProtocol();
+    method public abstract String getProxyServer();
+    method public abstract long getReceivedByteCount();
+    method public abstract String getUrl();
+    method public abstract java.util.List<java.lang.String> getUrlChain();
+    method public abstract boolean wasCached();
+  }
+
+}
+
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-current.txt b/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-current.txt
new file mode 100644
index 0000000..460c216
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-current.txt
@@ -0,0 +1,50 @@
+// Signature format: 2.0
+package android.net {
+
+  public final class TetheringConstants {
+    field public static final String EXTRA_ADD_TETHER_TYPE = "extraAddTetherType";
+    field public static final String EXTRA_PROVISION_CALLBACK = "extraProvisionCallback";
+    field public static final String EXTRA_REM_TETHER_TYPE = "extraRemTetherType";
+    field public static final String EXTRA_RUN_PROVISION = "extraRunProvision";
+    field public static final String EXTRA_SET_ALARM = "extraSetAlarm";
+  }
+
+  public class TetheringManager {
+    ctor public TetheringManager(@NonNull android.content.Context, @NonNull java.util.function.Supplier<android.os.IBinder>);
+    method public int getLastTetherError(@NonNull String);
+    method @NonNull public String[] getTetherableBluetoothRegexs();
+    method @NonNull public String[] getTetherableIfaces();
+    method @NonNull public String[] getTetherableUsbRegexs();
+    method @NonNull public String[] getTetherableWifiRegexs();
+    method @NonNull public String[] getTetheredIfaces();
+    method @NonNull public String[] getTetheringErroredIfaces();
+    method public boolean isTetheringSupported();
+    method public boolean isTetheringSupported(@NonNull String);
+    method public void requestLatestTetheringEntitlementResult(int, @NonNull android.os.ResultReceiver, boolean);
+    method @Deprecated public int setUsbTethering(boolean);
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public void startTethering(int, @NonNull java.util.concurrent.Executor, @NonNull android.net.TetheringManager.StartTetheringCallback);
+    method @Deprecated public int tether(@NonNull String);
+    method @Deprecated public int untether(@NonNull String);
+  }
+
+  public static interface TetheringManager.TetheredInterfaceCallback {
+    method public void onAvailable(@NonNull String);
+    method public void onUnavailable();
+  }
+
+  public static interface TetheringManager.TetheredInterfaceRequest {
+    method public void release();
+  }
+
+  public static interface TetheringManager.TetheringEventCallback {
+    method @Deprecated public default void onTetherableInterfaceRegexpsChanged(@NonNull android.net.TetheringManager.TetheringInterfaceRegexps);
+  }
+
+  @Deprecated public static class TetheringManager.TetheringInterfaceRegexps {
+    method @Deprecated @NonNull public java.util.List<java.lang.String> getTetherableBluetoothRegexs();
+    method @Deprecated @NonNull public java.util.List<java.lang.String> getTetherableUsbRegexs();
+    method @Deprecated @NonNull public java.util.List<java.lang.String> getTetherableWifiRegexs();
+  }
+
+}
+
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-removed.txt b/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/module-lib-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/removed.txt b/Tethering/common/TetheringLib/cronet_enabled/api/removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/system-current.txt b/Tethering/common/TetheringLib/cronet_enabled/api/system-current.txt
new file mode 100644
index 0000000..844ff64
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/system-current.txt
@@ -0,0 +1,117 @@
+// Signature format: 2.0
+package android.net {
+
+  public final class TetheredClient implements android.os.Parcelable {
+    ctor public TetheredClient(@NonNull android.net.MacAddress, @NonNull java.util.Collection<android.net.TetheredClient.AddressInfo>, int);
+    method public int describeContents();
+    method @NonNull public java.util.List<android.net.TetheredClient.AddressInfo> getAddresses();
+    method @NonNull public android.net.MacAddress getMacAddress();
+    method public int getTetheringType();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.TetheredClient> CREATOR;
+  }
+
+  public static final class TetheredClient.AddressInfo implements android.os.Parcelable {
+    method public int describeContents();
+    method @NonNull public android.net.LinkAddress getAddress();
+    method @Nullable public String getHostname();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.TetheredClient.AddressInfo> CREATOR;
+  }
+
+  public final class TetheringInterface implements android.os.Parcelable {
+    ctor public TetheringInterface(int, @NonNull String);
+    method public int describeContents();
+    method @NonNull public String getInterface();
+    method public int getType();
+    method public void writeToParcel(@NonNull android.os.Parcel, int);
+    field @NonNull public static final android.os.Parcelable.Creator<android.net.TetheringInterface> CREATOR;
+  }
+
+  public class TetheringManager {
+    method @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) public void registerTetheringEventCallback(@NonNull java.util.concurrent.Executor, @NonNull android.net.TetheringManager.TetheringEventCallback);
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public void requestLatestTetheringEntitlementResult(int, boolean, @NonNull java.util.concurrent.Executor, @NonNull android.net.TetheringManager.OnTetheringEntitlementResultListener);
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public void startTethering(@NonNull android.net.TetheringManager.TetheringRequest, @NonNull java.util.concurrent.Executor, @NonNull android.net.TetheringManager.StartTetheringCallback);
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public void stopAllTethering();
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.WRITE_SETTINGS}) public void stopTethering(int);
+    method @RequiresPermission(anyOf={android.Manifest.permission.TETHER_PRIVILEGED, android.Manifest.permission.ACCESS_NETWORK_STATE}) public void unregisterTetheringEventCallback(@NonNull android.net.TetheringManager.TetheringEventCallback);
+    field @Deprecated public static final String ACTION_TETHER_STATE_CHANGED = "android.net.conn.TETHER_STATE_CHANGED";
+    field public static final int CONNECTIVITY_SCOPE_GLOBAL = 1; // 0x1
+    field public static final int CONNECTIVITY_SCOPE_LOCAL = 2; // 0x2
+    field public static final String EXTRA_ACTIVE_LOCAL_ONLY = "android.net.extra.ACTIVE_LOCAL_ONLY";
+    field public static final String EXTRA_ACTIVE_TETHER = "tetherArray";
+    field public static final String EXTRA_AVAILABLE_TETHER = "availableArray";
+    field public static final String EXTRA_ERRORED_TETHER = "erroredArray";
+    field public static final int TETHERING_BLUETOOTH = 2; // 0x2
+    field public static final int TETHERING_ETHERNET = 5; // 0x5
+    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 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
+    field public static final int TETHER_ERROR_DISABLE_FORWARDING_ERROR = 9; // 0x9
+    field public static final int TETHER_ERROR_ENABLE_FORWARDING_ERROR = 8; // 0x8
+    field public static final int TETHER_ERROR_ENTITLEMENT_UNKNOWN = 13; // 0xd
+    field public static final int TETHER_ERROR_IFACE_CFG_ERROR = 10; // 0xa
+    field public static final int TETHER_ERROR_INTERNAL_ERROR = 5; // 0x5
+    field public static final int TETHER_ERROR_NO_ACCESS_TETHERING_PERMISSION = 15; // 0xf
+    field public static final int TETHER_ERROR_NO_CHANGE_TETHERING_PERMISSION = 14; // 0xe
+    field public static final int TETHER_ERROR_NO_ERROR = 0; // 0x0
+    field public static final int TETHER_ERROR_PROVISIONING_FAILED = 11; // 0xb
+    field public static final int TETHER_ERROR_SERVICE_UNAVAIL = 2; // 0x2
+    field public static final int TETHER_ERROR_TETHER_IFACE_ERROR = 6; // 0x6
+    field public static final int TETHER_ERROR_UNAVAIL_IFACE = 4; // 0x4
+    field public static final int TETHER_ERROR_UNKNOWN_IFACE = 1; // 0x1
+    field public static final int TETHER_ERROR_UNKNOWN_TYPE = 16; // 0x10
+    field public static final int TETHER_ERROR_UNSUPPORTED = 3; // 0x3
+    field public static final int TETHER_ERROR_UNTETHER_IFACE_ERROR = 7; // 0x7
+    field public static final int TETHER_HARDWARE_OFFLOAD_FAILED = 2; // 0x2
+    field public static final int TETHER_HARDWARE_OFFLOAD_STARTED = 1; // 0x1
+    field public static final int TETHER_HARDWARE_OFFLOAD_STOPPED = 0; // 0x0
+  }
+
+  public static interface TetheringManager.OnTetheringEntitlementResultListener {
+    method public void onTetheringEntitlementResult(int);
+  }
+
+  public static interface TetheringManager.StartTetheringCallback {
+    method public default void onTetheringFailed(int);
+    method public default void onTetheringStarted();
+  }
+
+  public static interface TetheringManager.TetheringEventCallback {
+    method public default void onClientsChanged(@NonNull java.util.Collection<android.net.TetheredClient>);
+    method public default void onError(@NonNull String, int);
+    method public default void onError(@NonNull android.net.TetheringInterface, int);
+    method public default void onLocalOnlyInterfacesChanged(@NonNull java.util.List<java.lang.String>);
+    method public default void onLocalOnlyInterfacesChanged(@NonNull java.util.Set<android.net.TetheringInterface>);
+    method public default void onOffloadStatusChanged(int);
+    method public default void onTetherableInterfacesChanged(@NonNull java.util.List<java.lang.String>);
+    method public default void onTetherableInterfacesChanged(@NonNull java.util.Set<android.net.TetheringInterface>);
+    method public default void onTetheredInterfacesChanged(@NonNull java.util.List<java.lang.String>);
+    method public default void onTetheredInterfacesChanged(@NonNull java.util.Set<android.net.TetheringInterface>);
+    method public default void onTetheringSupported(boolean);
+    method public default void onUpstreamChanged(@Nullable android.net.Network);
+  }
+
+  public static class TetheringManager.TetheringRequest {
+    method @Nullable public android.net.LinkAddress getClientStaticIpv4Address();
+    method public int getConnectivityScope();
+    method @Nullable public android.net.LinkAddress getLocalIpv4Address();
+    method public boolean getShouldShowEntitlementUi();
+    method public int getTetheringType();
+    method public boolean isExemptFromEntitlementCheck();
+  }
+
+  public static class TetheringManager.TetheringRequest.Builder {
+    ctor public TetheringManager.TetheringRequest.Builder(int);
+    method @NonNull public android.net.TetheringManager.TetheringRequest build();
+    method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setConnectivityScope(int);
+    method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setExemptFromEntitlementCheck(boolean);
+    method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setShouldShowEntitlementUi(boolean);
+    method @NonNull @RequiresPermission(android.Manifest.permission.TETHER_PRIVILEGED) public android.net.TetheringManager.TetheringRequest.Builder setStaticIpv4Addresses(@NonNull android.net.LinkAddress, @NonNull android.net.LinkAddress);
+  }
+
+}
+
diff --git a/Tethering/common/TetheringLib/cronet_enabled/api/system-removed.txt b/Tethering/common/TetheringLib/cronet_enabled/api/system-removed.txt
new file mode 100644
index 0000000..d802177
--- /dev/null
+++ b/Tethering/common/TetheringLib/cronet_enabled/api/system-removed.txt
@@ -0,0 +1 @@
+// Signature format: 2.0
diff --git a/Tethering/common/TetheringLib/jarjar-excludes.txt b/Tethering/common/TetheringLib/jarjar-excludes.txt
new file mode 100644
index 0000000..50bc186
--- /dev/null
+++ b/Tethering/common/TetheringLib/jarjar-excludes.txt
@@ -0,0 +1,2 @@
+# Don't touch anything that's already under android.net
+android\.net\..+
\ No newline at end of file
diff --git a/Tethering/common/TetheringLib/jarjar-rules.txt b/Tethering/common/TetheringLib/jarjar-rules.txt
deleted file mode 100644
index e459fad..0000000
--- a/Tethering/common/TetheringLib/jarjar-rules.txt
+++ /dev/null
@@ -1 +0,0 @@
-# jarjar rules for the bootclasspath tethering framework library here
\ No newline at end of file
diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index e1b7016..e48019c 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -1203,6 +1203,9 @@
         }
 
         private void handleConnectivityAction(Intent intent) {
+            // CONNECTIVITY_ACTION is not handled since U+ device.
+            if (SdkLevel.isAtLeastU()) return;
+
             final NetworkInfo networkInfo =
                     (NetworkInfo) intent.getParcelableExtra(EXTRA_NETWORK_INFO);
             if (networkInfo == null
@@ -2034,6 +2037,11 @@
                     // broadcasts that result in being passed a
                     // TetherMainSM.CMD_UPSTREAM_CHANGED.
                     handleNewUpstreamNetworkState(null);
+
+                    if (SdkLevel.isAtLeastU()) {
+                        // Need to try DUN immediately if Wi-Fi goes down.
+                        chooseUpstreamType(true);
+                    }
                     break;
                 default:
                     mLog.e("Unknown arg1 value: " + arg1);
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
index 38f1e9c..da81bda 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringServiceTest.java
@@ -666,7 +666,7 @@
 
             // Calling System.gc() or System.runFinalization() doesn't guarantee GCs or finalizers
             // are executed synchronously. The finalizer is called after GC on a separate thread.
-            final int attempts = 100;
+            final int attempts = 600;
             final long waitIntervalMs = 50;
             for (int i = 0; i < attempts; i++) {
                 forceGc();
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 a8d886b..f90b3a4 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -82,6 +82,8 @@
 import static org.junit.Assert.assertArrayEquals;
 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;
@@ -179,6 +181,7 @@
 import android.util.ArraySet;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.test.filters.SmallTest;
 import androidx.test.runner.AndroidJUnit4;
 
@@ -1337,6 +1340,131 @@
         verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
+    private void verifyWifiUpstreamAndUnregisterDunCallback(@NonNull final InOrder inOrder,
+            @NonNull final TestNetworkAgent wifi,
+            @NonNull final NetworkCallback currentDunCallack) throws Exception {
+        assertNotNull(currentDunCallack);
+
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
+        inOrder.verify(mCm).unregisterNetworkCallback(eq(currentDunCallack));
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
+        inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
+    }
+
+    @Nullable
+    private NetworkCallback verifyDunUpstream(@NonNull final InOrder inOrder,
+            @NonNull final TestNetworkAgent dun, final boolean needToRequestNetwork)
+            throws Exception {
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
+        ArgumentCaptor<NetworkCallback> captor = ArgumentCaptor.forClass(NetworkCallback.class);
+        NetworkCallback dunNetworkCallback = null;
+        if (needToRequestNetwork) {
+            inOrder.verify(mCm).requestNetwork(any(), eq(0), eq(TYPE_MOBILE_DUN), any(),
+                    captor.capture());
+            dunNetworkCallback = captor.getValue();
+        }
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(null);
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+
+        if (needToRequestNetwork) {
+            assertNotNull(dunNetworkCallback);
+        } else {
+            assertNull(dunNetworkCallback);
+        }
+
+        return dunNetworkCallback;
+    }
+
+    // Overall test coverage:
+    // - verifyChooseDunUpstreamByAutomaticMode: common, test#1, test#2
+    // - testChooseDunUpstreamByAutomaticMode_defaultNetworkWifi: test#3, test#4
+    // - testChooseDunUpstreamByAutomaticMode_loseDefaultNetworkWifi: test#5
+    // - testChooseDunUpstreamByAutomaticMode_defaultNetworkCell: test#5, test#7
+    // - testChooseDunUpstreamByAutomaticMode_loseAndRegainDun: test#8
+    // - testChooseDunUpstreamByAutomaticMode_switchDefaultFromWifiToCell: test#9, test#10
+    //
+    // Overall test cases:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |       |       |       |   -   | --+
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |       |   V   |       |   -   |   |
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |       |   V   |   O   |  Dun  |   +-- chooseDunUpstreamTestCommon
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |   V   |   O   |   O   |  WiFi |   |
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |   V   |   O   |       |  WiFi | --+
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   1   +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   2   +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   3   |   V   |   O   |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |   4   |   V   |       |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |   5   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   6   |       |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   7   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |       |       |       |   -   |
+    // |   8   +-------+-------+-------+-------+
+    // |       |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |   V   |       |   O   |  WiFi |
+    // |   9   +-------+-------+-------+-------+
+    // |       |   V   |       |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   10  +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
+    // Annotation:
+    // 1. "V" means that the given network is connected and it is default network.
+    // 2. "O" means that the given network is connected and it is not default network.
+    //
+
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |       |       |       |   -   | --+
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |       |   V   |       |   -   |   |
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |       |   V   |   O   |  Dun  |   +-- chooseDunUpstreamTestCommon
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |   V   |   O   |   O   |  WiFi |   |
+    // +-------+-------+-------+-------+-------+   |
+    // |   -   |   V   |   O   |       |  WiFi | --+
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   1   +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   2   +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
     private void verifyChooseDunUpstreamByAutomaticMode(boolean configAutomatic) throws Exception {
         // Enable automatic upstream selection.
         TestNetworkAgent mobile = new TestNetworkAgent(mCm, buildMobileDualStackUpstreamState());
@@ -1345,20 +1473,14 @@
         InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
         chooseDunUpstreamTestCommon(configAutomatic, inOrder, mobile, wifi, dun);
 
-        // When default network switch to mobile and wifi is connected (may have low signal),
+        // [1] When default network switch to mobile and wifi is connected (may have low signal),
         // automatic mode would request dun again and choose it as upstream.
         mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
         mLooper.dispatchAll();
-        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
-        ArgumentCaptor<NetworkCallback> captor = ArgumentCaptor.forClass(NetworkCallback.class);
-        inOrder.verify(mCm).requestNetwork(any(), eq(0), eq(TYPE_MOBILE_DUN), any(), any());
-        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(null);
-        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
-        dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
-        mLooper.dispatchAll();
-        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+        verifyDunUpstream(inOrder, dun, true /* needToRequestNetwork */);
 
-        // Lose and regain upstream again.
+        // [2] Lose and regain upstream again.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
         dun.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
         mLooper.dispatchAll();
         inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
@@ -1376,12 +1498,245 @@
         verifyChooseDunUpstreamByAutomaticMode(true /* configAutomatic */);
     }
 
+    // testChooseDunUpstreamByAutomaticMode_* doesn't verify configAutomatic:false because no
+    // matter |configAutomatic| set to true or false, the result always be automatic mode. We
+    // just need one test to make sure this behavior. Don't need to test this configuration
+    // in all tests.
     @Test
     @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
     public void testChooseDunUpstreamByAutomaticModeWithConfigDisabled() throws Exception {
         verifyChooseDunUpstreamByAutomaticMode(false /* configAutomatic */);
     }
 
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   3   |   V   |   O   |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |   4   |   V   |       |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    //
+    // See verifyChooseDunUpstreamByAutomaticMode for the annotation.
+    //
+    @Test
+    public void testChooseDunUpstreamByAutomaticMode_defaultNetworkWifi() throws Exception {
+        TestNetworkAgent mobile = new TestNetworkAgent(mCm, buildMobileDualStackUpstreamState());
+        TestNetworkAgent wifi = new TestNetworkAgent(mCm, buildWifiUpstreamState());
+        TestNetworkAgent dun = new TestNetworkAgent(mCm, buildDunUpstreamState());
+        final InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
+        final NetworkCallback dunNetworkCallback1 = setupDunUpstreamTest(
+                true /* configAutomatic */, inOrder);
+
+        // When wifi connected, unregister dun request and choose wifi as upstream.
+        wifi.fakeConnect();
+        mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        verifyWifiUpstreamAndUnregisterDunCallback(inOrder, wifi, dunNetworkCallback1);
+
+        // When default network switch to mobile and wifi is connected (may have low signal),
+        // automatic mode would request dun again and choose it as upstream.
+        mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        final NetworkCallback dunNetworkCallback2 =
+                verifyDunUpstream(inOrder, dun, true /* needToRequestNetwork */);
+
+        // [3] When default network switch to wifi and mobile is still connected,
+        // unregister dun request and choose wifi as upstream.
+        mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        verifyWifiUpstreamAndUnregisterDunCallback(inOrder, wifi, dunNetworkCallback2);
+
+        // [4] When mobile is disconnected, keep wifi as upstream.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        mobile.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
+    }
+
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |   V   |       |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |   5   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
+    // See verifyChooseDunUpstreamByAutomaticMode for the annotation.
+    //
+    @Test
+    public void testChooseDunUpstreamByAutomaticMode_loseDefaultNetworkWifi() throws Exception {
+        TestNetworkAgent wifi = new TestNetworkAgent(mCm, buildWifiUpstreamState());
+        TestNetworkAgent dun = new TestNetworkAgent(mCm, buildDunUpstreamState());
+        final InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
+        final NetworkCallback dunNetworkCallback = setupDunUpstreamTest(
+                true /* configAutomatic */, inOrder);
+
+        // When wifi connected, unregister dun request and choose wifi as upstream.
+        wifi.fakeConnect();
+        mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        verifyWifiUpstreamAndUnregisterDunCallback(inOrder, wifi, dunNetworkCallback);
+
+        // [5] When wifi is disconnected, automatic mode would request dun again and choose it
+        // as upstream.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        mCm.makeDefaultNetwork(null, CALLBACKS_FIRST, doDispatchAll);
+        wifi.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        verifyDunUpstream(inOrder, dun, true /* needToRequestNetwork */);
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
+    }
+
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   6   |       |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |   7   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
+    // See verifyChooseDunUpstreamByAutomaticMode for the annotation.
+    //
+    @Test
+    public void testChooseDunUpstreamByAutomaticMode_defaultNetworkCell() throws Exception {
+        TestNetworkAgent mobile = new TestNetworkAgent(mCm, buildMobileDualStackUpstreamState());
+        TestNetworkAgent dun = new TestNetworkAgent(mCm, buildDunUpstreamState());
+        final InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
+        setupDunUpstreamTest(true /* configAutomatic */, inOrder);
+
+        // Pretend dun connected and expect choose dun as upstream.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+
+        // [6] When mobile is connected and default network switch to mobile, keep dun as upstream.
+        mobile.fakeConnect();
+        mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
+
+        // [7] When mobile is disconnected, keep dun as upstream.
+        mCm.makeDefaultNetwork(null, CALLBACKS_FIRST, doDispatchAll);
+        mobile.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
+    }
+
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |       |       |       |   -   |
+    // |   8   +-------+-------+-------+-------+
+    // |       |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
+    // See verifyChooseDunUpstreamByAutomaticMode for the annotation.
+    //
+    @Test
+    public void testChooseDunUpstreamByAutomaticMode_loseAndRegainDun() throws Exception {
+        TestNetworkAgent dun = new TestNetworkAgent(mCm, buildDunUpstreamState());
+        final InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
+        setupDunUpstreamTest(true /* configAutomatic */, inOrder);
+
+        // Pretend dun connected and expect choose dun as upstream.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+
+        // [8] Lose and regain upstream again.
+        dun.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        verifyDunUpstream(inOrder, dun, false /* needToRequestNetwork */);
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
+    }
+
+    // Test case:
+    // +-------+-------+-------+-------+-------+
+    // | Test  | WiFi  | Cellu |  Dun  | Expec |
+    // | Case  |       | alr   |       | ted   |
+    // |   #   |       |       |       | Upstr |
+    // |       |       |       |       | eam   |
+    // +-------+-------+-------+-------+-------+
+    // |   -   |       |       |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    // |       |   V   |       |   O   |  WiFi |
+    // |   9   +-------+-------+-------+-------+
+    // |       |   V   |       |       |  WiFi |
+    // +-------+-------+-------+-------+-------+
+    // |       |   O   |   V   |       |   -   |
+    // |   10  +-------+-------+-------+-------+
+    // |       |   O   |   V   |   O   |  Dun  |
+    // +-------+-------+-------+-------+-------+
+    //
+    // See verifyChooseDunUpstreamByAutomaticMode for the annotation.
+    //
+    @Test
+    public void testChooseDunUpstreamByAutomaticMode_switchDefaultFromWifiToCell()
+            throws Exception {
+        TestNetworkAgent mobile = new TestNetworkAgent(mCm, buildMobileDualStackUpstreamState());
+        TestNetworkAgent wifi = new TestNetworkAgent(mCm, buildWifiUpstreamState());
+        TestNetworkAgent dun = new TestNetworkAgent(mCm, buildDunUpstreamState());
+        final InOrder inOrder = inOrder(mCm, mUpstreamNetworkMonitor);
+        final NetworkCallback dunNetworkCallback = setupDunUpstreamTest(
+                true /* configAutomatic */, inOrder);
+
+        // Pretend dun connected and expect choose dun as upstream.
+        final Runnable doDispatchAll = () -> mLooper.dispatchAll();
+        dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+
+        // [9] When wifi is connected and default network switch to wifi, unregister dun request
+        // and choose wifi as upstream. When dun is disconnected, keep wifi as upstream.
+        wifi.fakeConnect();
+        mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        verifyWifiUpstreamAndUnregisterDunCallback(inOrder, wifi, dunNetworkCallback);
+        dun.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
+        mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
+
+        // [10] When mobile and mobile are connected and default network switch to mobile
+        // (may have low signal), automatic mode would request dun again and choose it as
+        // upstream.
+        mobile.fakeConnect();
+        mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
+        mLooper.dispatchAll();
+        verifyDunUpstream(inOrder, dun, true /* needToRequestNetwork */);
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
+    }
+
     @Test
     @IgnoreAfter(Build.VERSION_CODES.TIRAMISU)
     public void testChooseDunUpstreamByLegacyMode() throws Exception {
@@ -1425,8 +1780,7 @@
         verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
-    private void chooseDunUpstreamTestCommon(final boolean automatic, InOrder inOrder,
-            TestNetworkAgent mobile, TestNetworkAgent wifi, TestNetworkAgent dun) throws Exception {
+    private NetworkCallback setupDunUpstreamTest(final boolean automatic, InOrder inOrder) {
         when(mResources.getBoolean(R.bool.config_tether_upstream_automatic)).thenReturn(automatic);
         when(mTelephonyManager.isTetheringApnRequired()).thenReturn(true);
         sendConfigurationChanged();
@@ -1439,10 +1793,16 @@
         inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
         ArgumentCaptor<NetworkCallback> captor = ArgumentCaptor.forClass(NetworkCallback.class);
         inOrder.verify(mCm).requestNetwork(any(), eq(0), eq(TYPE_MOBILE_DUN), any(),
-                captor.capture());
-        final NetworkCallback dunNetworkCallback1 = captor.getValue();
+                captor.capture() /* DUN network callback */);
 
-        // Pretend cellular connected and expect the upstream to be set.
+        return captor.getValue();
+    }
+
+    private void chooseDunUpstreamTestCommon(final boolean automatic, InOrder inOrder,
+            TestNetworkAgent mobile, TestNetworkAgent wifi, TestNetworkAgent dun) throws Exception {
+        final NetworkCallback dunNetworkCallback = setupDunUpstreamTest(automatic, inOrder);
+
+        // Pretend cellular connected and expect the upstream to be not set.
         mobile.fakeConnect();
         mCm.makeDefaultNetwork(mobile, BROADCAST_FIRST);
         mLooper.dispatchAll();
@@ -1458,9 +1818,7 @@
         wifi.fakeConnect();
         mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
         mLooper.dispatchAll();
-        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
-        inOrder.verify(mCm).unregisterNetworkCallback(eq(dunNetworkCallback1));
-        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
+        verifyWifiUpstreamAndUnregisterDunCallback(inOrder, wifi, dunNetworkCallback);
         dun.fakeDisconnect(BROADCAST_FIRST, doDispatchAll);
         mLooper.dispatchAll();
         inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
@@ -1767,7 +2125,7 @@
                     new ArrayList<Network>(Arrays.asList(networks));
             for (Network upstream : expectedUpstreams) {
                 // throws OOB if no expectations
-                assertEquals(mActualUpstreams.remove(0), upstream);
+                assertEquals(upstream, mActualUpstreams.remove(0));
             }
             assertNoUpstreamChangeCallback();
         }
@@ -1782,14 +2140,14 @@
             for (TetheringConfigurationParcel config : expectedTetherConfig) {
                 // throws OOB if no expectations
                 final TetheringConfigurationParcel actualConfig = mTetheringConfigs.remove(0);
-                assertTetherConfigParcelEqual(actualConfig, config);
+                assertTetherConfigParcelEqual(config, actualConfig);
             }
             assertNoConfigChangeCallback();
         }
 
         public void expectOffloadStatusChanged(final int expectedStatus) {
             assertOffloadStatusChangedCallback();
-            assertEquals(mOffloadStatus.remove(0), new Integer(expectedStatus));
+            assertEquals(Integer.valueOf(expectedStatus), mOffloadStatus.remove(0));
         }
 
         public TetherStatesParcel pollTetherStatesChanged() {
@@ -1880,12 +2238,12 @@
 
         private void assertTetherConfigParcelEqual(@NonNull TetheringConfigurationParcel actual,
                 @NonNull TetheringConfigurationParcel expect) {
-            assertArrayEquals(actual.tetherableUsbRegexs, expect.tetherableUsbRegexs);
-            assertArrayEquals(actual.tetherableWifiRegexs, expect.tetherableWifiRegexs);
-            assertArrayEquals(actual.tetherableBluetoothRegexs, expect.tetherableBluetoothRegexs);
-            assertArrayEquals(actual.legacyDhcpRanges, expect.legacyDhcpRanges);
-            assertArrayEquals(actual.provisioningApp, expect.provisioningApp);
-            assertEquals(actual.provisioningAppNoUi, expect.provisioningAppNoUi);
+            assertArrayEquals(expect.tetherableUsbRegexs, actual.tetherableUsbRegexs);
+            assertArrayEquals(expect.tetherableWifiRegexs, actual.tetherableWifiRegexs);
+            assertArrayEquals(expect.tetherableBluetoothRegexs, actual.tetherableBluetoothRegexs);
+            assertArrayEquals(expect.legacyDhcpRanges, actual.legacyDhcpRanges);
+            assertArrayEquals(expect.provisioningApp, actual.provisioningApp);
+            assertEquals(expect.provisioningAppNoUi, actual.provisioningAppNoUi);
         }
     }
 
diff --git a/bpf_progs/bpf_net_helpers.h b/bpf_progs/bpf_net_helpers.h
index c39269e..b7ca3af 100644
--- a/bpf_progs/bpf_net_helpers.h
+++ b/bpf_progs/bpf_net_helpers.h
@@ -21,6 +21,18 @@
 #include <stdbool.h>
 #include <stdint.h>
 
+// bionic kernel uapi linux/udp.h header is munged...
+#define __kernel_udphdr udphdr
+#include <linux/udp.h>
+
+// Offsets from beginning of L4 (TCP/UDP) header
+#define TCP_OFFSET(field) offsetof(struct tcphdr, field)
+#define UDP_OFFSET(field) offsetof(struct udphdr, field)
+
+// Offsets from beginning of L3 (IPv4/IPv6) header
+#define IP4_OFFSET(field) offsetof(struct iphdr, field)
+#define IP6_OFFSET(field) offsetof(struct ipv6hdr, field)
+
 // 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;
 
diff --git a/bpf_progs/netd.c b/bpf_progs/netd.c
index 43920d0..84da79d 100644
--- a/bpf_progs/netd.c
+++ b/bpf_progs/netd.c
@@ -46,8 +46,9 @@
 static const bool INGRESS = false;
 static const bool EGRESS = true;
 
-#define IP_PROTO_OFF offsetof(struct iphdr, protocol)
-#define IPV6_PROTO_OFF offsetof(struct ipv6hdr, nexthdr)
+// Used for 'bool enable_tracing'
+static const bool TRACE_ON = true;
+static const bool TRACE_OFF = false;
 
 // offsetof(struct iphdr, ihl) -- but that's a bitfield
 #define IPPROTO_IHL_OFF 0
@@ -60,14 +61,18 @@
 #define TCP_FLAG32_OFF 12
 
 // For maps netd does not need to access
-#define DEFINE_BPF_MAP_NO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
-    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries, \
-                       AID_ROOT, AID_NET_BW_ACCT, 0060, "fs_bpf_net_shared", "", false)
+#define DEFINE_BPF_MAP_NO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries)      \
+    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries,              \
+                       AID_ROOT, AID_NET_BW_ACCT, 0060, "fs_bpf_net_shared", "", false, \
+                       BPFLOADER_MIN_VER, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,       \
+                       /*ignore_on_user*/false, /*ignore_on_userdebug*/false)
 
 // For maps netd only needs read only access to
-#define DEFINE_BPF_MAP_RO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
-    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries, \
-                       AID_ROOT, AID_NET_BW_ACCT, 0460, "fs_bpf_netd_readonly", "", false)
+#define DEFINE_BPF_MAP_RO_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries)         \
+    DEFINE_BPF_MAP_EXT(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries,                 \
+                       AID_ROOT, AID_NET_BW_ACCT, 0460, "fs_bpf_netd_readonly", "", false, \
+                       BPFLOADER_MIN_VER, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,       \
+                       /*ignore_on_user*/false, /*ignore_on_userdebug*/false)
 
 // For maps netd needs to be able to read and write
 #define DEFINE_BPF_MAP_RW_NETD(the_map, TYPE, TypeOfKey, TypeOfValue, num_entries) \
@@ -95,6 +100,19 @@
 /* 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", "", false,
+                   BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,
+                   /*ignore_on_user*/true, /*ignore_on_userdebug*/false)
+
+// A ring buffer on which packet information is pushed. This map will only be loaded
+// on eng and userdebug devices. User devices won't load this to save memory.
+DEFINE_BPF_RINGBUF_EXT(packet_trace_ringbuf, PacketTrace, PACKET_TRACE_BUF_SIZE,
+                       AID_ROOT, AID_SYSTEM, 0060, "fs_bpf_net_shared", "", false,
+                       BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, /*ignore_on_eng*/false,
+                       /*ignore_on_user*/true, /*ignore_on_userdebug*/false);
+
 // iptables xt_bpf programs need to be usable by both netd and netutils_wrappers
 // selinux contexts, because even non-xt_bpf iptables mutations are implemented as
 // a full table dump, followed by an update in userspace, and then a reload into the kernel,
@@ -222,12 +240,72 @@
         : bpf_skb_load_bytes(skb, L3_off, to, len);
 }
 
+static __always_inline inline void do_packet_tracing(
+        const struct __sk_buff* const skb, const bool egress, const uint32_t uid,
+        const uint32_t tag, const bool enable_tracing, const unsigned kver) {
+    if (!enable_tracing) return;
+    if (kver < KVER(5, 8, 0)) return;
+
+    uint32_t mapKey = 0;
+    bool* traceConfig = bpf_packet_trace_enabled_map_lookup_elem(&mapKey);
+    if (traceConfig == NULL) return;
+    if (*traceConfig == false) return;
+
+    PacketTrace* pkt = bpf_packet_trace_ringbuf_reserve();
+    if (pkt == NULL) return;
+
+    // Errors from bpf_skb_load_bytes_net are ignored to favor returning something
+    // over returning nothing. In the event of an error, the kernel will fill in
+    // zero for the destination memory. Do not change the default '= 0' below.
+
+    uint8_t proto = 0;
+    uint8_t L4_off = 0;
+    uint8_t ipVersion = 0;
+    if (skb->protocol == htons(ETH_P_IP)) {
+        (void)bpf_skb_load_bytes_net(skb, IP4_OFFSET(protocol), &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IPPROTO_IHL_OFF, &L4_off, sizeof(L4_off), kver);
+        L4_off = (L4_off & 0x0F) * 4;  // IHL calculation.
+        ipVersion = 4;
+    } else if (skb->protocol == htons(ETH_P_IPV6)) {
+        (void)bpf_skb_load_bytes_net(skb, IP6_OFFSET(nexthdr), &proto, sizeof(proto), kver);
+        L4_off = sizeof(struct ipv6hdr);
+        ipVersion = 6;
+    }
+
+    uint8_t flags = 0;
+    __be16 sport = 0, dport = 0;
+    if (proto == IPPROTO_TCP && L4_off >= 20) {
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_FLAG32_OFF + 1, &flags, sizeof(flags), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_OFFSET(source), &sport, sizeof(sport), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + TCP_OFFSET(dest), &dport, sizeof(dport), kver);
+    } else if (proto == IPPROTO_UDP && L4_off >= 20) {
+        (void)bpf_skb_load_bytes_net(skb, L4_off + UDP_OFFSET(source), &sport, sizeof(sport), kver);
+        (void)bpf_skb_load_bytes_net(skb, L4_off + UDP_OFFSET(dest), &dport, sizeof(dport), kver);
+    }
+
+    pkt->timestampNs = bpf_ktime_get_boot_ns();
+    pkt->ifindex = skb->ifindex;
+    pkt->length = skb->len;
+
+    pkt->uid = uid;
+    pkt->tag = tag;
+    pkt->sport = sport;
+    pkt->dport = dport;
+
+    pkt->egress = egress;
+    pkt->ipProto = proto;
+    pkt->tcpFlags = flags;
+    pkt->ipVersion = ipVersion;
+
+    bpf_packet_trace_ringbuf_submit(pkt);
+}
+
 static __always_inline inline bool skip_owner_match(struct __sk_buff* skb, const unsigned kver) {
     uint32_t flag = 0;
     if (skb->protocol == htons(ETH_P_IP)) {
         uint8_t proto;
         // no need to check for success, proto will be zeroed if bpf_skb_load_bytes_net() fails
-        (void)bpf_skb_load_bytes_net(skb, IP_PROTO_OFF, &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IP4_OFFSET(protocol), &proto, sizeof(proto), kver);
         if (proto == IPPROTO_ESP) return true;
         if (proto != IPPROTO_TCP) return false;  // handles read failure above
         uint8_t ihl;
@@ -243,7 +321,7 @@
     } else if (skb->protocol == htons(ETH_P_IPV6)) {
         uint8_t proto;
         // no need to check for success, proto will be zeroed if bpf_skb_load_bytes_net() fails
-        (void)bpf_skb_load_bytes_net(skb, IPV6_PROTO_OFF, &proto, sizeof(proto), kver);
+        (void)bpf_skb_load_bytes_net(skb, IP6_OFFSET(nexthdr), &proto, sizeof(proto), kver);
         if (proto == IPPROTO_ESP) return true;
         if (proto != IPPROTO_TCP) return false;  // handles read failure above
         // if the read below fails, we'll just assume no TCP flags are set, which is fine.
@@ -315,6 +393,7 @@
 }
 
 static __always_inline inline int bpf_traffic_account(struct __sk_buff* skb, bool egress,
+                                                      const bool enable_tracing,
                                                       const unsigned kver) {
     uint32_t sock_uid = bpf_get_socket_uid(skb);
     uint64_t cookie = bpf_get_socket_cookie(skb);
@@ -374,34 +453,51 @@
         key.tag = 0;
     }
 
+    do_packet_tracing(skb, egress, uid, tag, enable_tracing, kver);
     update_stats_with_config(skb, egress, &key, *selectedMap);
     update_app_uid_stats_map(skb, egress, &uid);
     asm("%0 &= 1" : "+r"(match));
     return match;
 }
 
+DEFINE_BPF_PROG_EXT("cgroupskb/ingress/stats$trace", AID_ROOT, AID_SYSTEM,
+                    bpf_cgroup_ingress_trace, KVER(5, 8, 0), KVER_INF,
+                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, false,
+                    "fs_bpf_netd_readonly", "", false, true, false)
+(struct __sk_buff* skb) {
+    return bpf_traffic_account(skb, INGRESS, TRACE_ON, KVER(5, 8, 0));
+}
+
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/ingress/stats$4_19", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_ingress_4_19, KVER(4, 19, 0), KVER_INF)
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, INGRESS, KVER(4, 19, 0));
+    return bpf_traffic_account(skb, INGRESS, TRACE_OFF, KVER(4, 19, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/ingress/stats$4_14", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_ingress_4_14, KVER_NONE, KVER(4, 19, 0))
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, INGRESS, KVER_NONE);
+    return bpf_traffic_account(skb, INGRESS, TRACE_OFF, KVER_NONE);
+}
+
+DEFINE_BPF_PROG_EXT("cgroupskb/egress/stats$trace", AID_ROOT, AID_SYSTEM,
+                    bpf_cgroup_egress_trace, KVER(5, 8, 0), KVER_INF,
+                    BPFLOADER_IGNORED_ON_VERSION, BPFLOADER_MAX_VER, false,
+                    "fs_bpf_netd_readonly", "", false, true, false)
+(struct __sk_buff* skb) {
+    return bpf_traffic_account(skb, EGRESS, TRACE_ON, KVER(5, 8, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/egress/stats$4_19", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_egress_4_19, KVER(4, 19, 0), KVER_INF)
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, EGRESS, KVER(4, 19, 0));
+    return bpf_traffic_account(skb, EGRESS, TRACE_OFF, KVER(4, 19, 0));
 }
 
 DEFINE_NETD_BPF_PROG_KVER_RANGE("cgroupskb/egress/stats$4_14", AID_ROOT, AID_SYSTEM,
                                 bpf_cgroup_egress_4_14, KVER_NONE, KVER(4, 19, 0))
 (struct __sk_buff* skb) {
-    return bpf_traffic_account(skb, EGRESS, KVER_NONE);
+    return bpf_traffic_account(skb, EGRESS, TRACE_OFF, KVER_NONE);
 }
 
 // WARNING: Android T's non-updatable netd depends on the name of this program.
diff --git a/bpf_progs/netd.h b/bpf_progs/netd.h
index cc88680..be604f9 100644
--- a/bpf_progs/netd.h
+++ b/bpf_progs/netd.h
@@ -69,6 +69,24 @@
     uint64_t tcpTxPackets;
 } Stats;
 
+typedef struct {
+  uint64_t timestampNs;
+  uint32_t ifindex;
+  uint32_t length;
+
+  uint32_t uid;
+  uint32_t tag;
+
+  __be16 sport;
+  __be16 dport;
+
+  bool egress;
+  uint8_t ipProto;
+  uint8_t tcpFlags;
+  uint8_t ipVersion; // 4=IPv4, 6=IPv6, 0=unknown
+} PacketTrace;
+STRUCT_SIZE(PacketTrace, 8+4+4 + 4+4 + 2+2 + 1+1+1+1);
+
 // Since we cannot garbage collect the stats map since device boot, we need to make these maps as
 // large as possible. The maximum size of number of map entries we can have is depend on the rlimit
 // of MEM_LOCK granted to netd. The memory space needed by each map can be calculated by the
@@ -87,7 +105,8 @@
 // dozable_uid_map:     key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
 // standby_uid_map:     key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
 // powersave_uid_map:   key:  4 bytes, value:  1 bytes, cost:  145216 bytes    =   145Kbytes
-// total:                                                                         4930Kbytes
+// packet_trace_ringbuf:key:  0 bytes, value: 24 bytes, cost:   32768 bytes    =    32Kbytes
+// total:                                                                         4962Kbytes
 // It takes maximum 4.9MB kernel memory space if all maps are full, which requires any devices
 // running this module to have a memlock rlimit to be larger then 5MB. In the old qtaguid module,
 // we don't have a total limit for data entries but only have limitation of tags each uid can have.
@@ -102,6 +121,7 @@
 static const int IFACE_STATS_MAP_SIZE = 1000;
 static const int CONFIGURATION_MAP_SIZE = 2;
 static const int UID_OWNER_MAP_SIZE = 4000;
+static const int PACKET_TRACE_BUF_SIZE = 32 * 1024;
 
 #ifdef __cplusplus
 
@@ -145,6 +165,8 @@
 #define CONFIGURATION_MAP_PATH BPF_NETD_PATH "map_netd_configuration_map"
 #define UID_OWNER_MAP_PATH BPF_NETD_PATH "map_netd_uid_owner_map"
 #define UID_PERMISSION_MAP_PATH BPF_NETD_PATH "map_netd_uid_permission_map"
+#define PACKET_TRACE_RINGBUF_PATH BPF_NETD_PATH "map_netd_packet_trace_ringbuf"
+#define PACKET_TRACE_ENABLED_MAP_PATH BPF_NETD_PATH "map_netd_packet_trace_enabled_map"
 
 #endif // __cplusplus
 
diff --git a/framework-t/api/current.txt b/framework-t/api/current.txt
index eb77288..5532853 100644
--- a/framework-t/api/current.txt
+++ b/framework-t/api/current.txt
@@ -192,15 +192,20 @@
     method @RequiresPermission(android.Manifest.permission.ACCESS_NETWORK_STATE) public void discoverServices(@NonNull String, int, @NonNull android.net.NetworkRequest, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.DiscoveryListener);
     method public void registerService(android.net.nsd.NsdServiceInfo, int, android.net.nsd.NsdManager.RegistrationListener);
     method public void registerService(@NonNull android.net.nsd.NsdServiceInfo, int, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.RegistrationListener);
-    method public void resolveService(android.net.nsd.NsdServiceInfo, android.net.nsd.NsdManager.ResolveListener);
-    method public void resolveService(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ResolveListener);
+    method public void registerServiceInfoCallback(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ServiceInfoCallback);
+    method @Deprecated public void resolveService(android.net.nsd.NsdServiceInfo, android.net.nsd.NsdManager.ResolveListener);
+    method @Deprecated public void resolveService(@NonNull android.net.nsd.NsdServiceInfo, @NonNull java.util.concurrent.Executor, @NonNull android.net.nsd.NsdManager.ResolveListener);
     method public void stopServiceDiscovery(android.net.nsd.NsdManager.DiscoveryListener);
+    method public void stopServiceResolution(@NonNull android.net.nsd.NsdManager.ResolveListener);
     method public void unregisterService(android.net.nsd.NsdManager.RegistrationListener);
+    method public void unregisterServiceInfoCallback(@NonNull android.net.nsd.NsdManager.ServiceInfoCallback);
     field public static final String ACTION_NSD_STATE_CHANGED = "android.net.nsd.STATE_CHANGED";
     field public static final String EXTRA_NSD_STATE = "nsd_state";
     field public static final int FAILURE_ALREADY_ACTIVE = 3; // 0x3
+    field public static final int FAILURE_BAD_PARAMETERS = 6; // 0x6
     field public static final int FAILURE_INTERNAL_ERROR = 0; // 0x0
     field public static final int FAILURE_MAX_LIMIT = 4; // 0x4
+    field public static final int FAILURE_OPERATION_NOT_RUNNING = 5; // 0x5
     field public static final int NSD_STATE_DISABLED = 1; // 0x1
     field public static final int NSD_STATE_ENABLED = 2; // 0x2
     field public static final int PROTOCOL_DNS_SD = 1; // 0x1
@@ -224,21 +229,32 @@
 
   public static interface NsdManager.ResolveListener {
     method public void onResolveFailed(android.net.nsd.NsdServiceInfo, int);
+    method public default void onResolveStopped(@NonNull android.net.nsd.NsdServiceInfo);
     method public void onServiceResolved(android.net.nsd.NsdServiceInfo);
+    method public default void onStopResolutionFailed(@NonNull android.net.nsd.NsdServiceInfo, int);
+  }
+
+  public static interface NsdManager.ServiceInfoCallback {
+    method public void onServiceInfoCallbackRegistrationFailed(int);
+    method public void onServiceInfoCallbackUnregistered();
+    method public void onServiceLost();
+    method public void onServiceUpdated(@NonNull android.net.nsd.NsdServiceInfo);
   }
 
   public final class NsdServiceInfo implements android.os.Parcelable {
     ctor public NsdServiceInfo();
     method public int describeContents();
     method public java.util.Map<java.lang.String,byte[]> getAttributes();
-    method public java.net.InetAddress getHost();
+    method @Deprecated public java.net.InetAddress getHost();
+    method @NonNull public java.util.List<java.net.InetAddress> getHostAddresses();
     method @Nullable public android.net.Network getNetwork();
     method public int getPort();
     method public String getServiceName();
     method public String getServiceType();
     method public void removeAttribute(String);
     method public void setAttribute(String, String);
-    method public void setHost(java.net.InetAddress);
+    method @Deprecated public void setHost(java.net.InetAddress);
+    method public void setHostAddresses(@NonNull java.util.List<java.net.InetAddress>);
     method public void setNetwork(@Nullable android.net.Network);
     method public void setPort(int);
     method public void setServiceName(String);
diff --git a/framework-t/api/system-current.txt b/framework-t/api/system-current.txt
index c2d245c..87b0a64 100644
--- a/framework-t/api/system-current.txt
+++ b/framework-t/api/system-current.txt
@@ -260,6 +260,7 @@
   public class IpSecManager {
     method @RequiresPermission(android.Manifest.permission.MANAGE_IPSEC_TUNNELS) public void applyTunnelModeTransform(@NonNull android.net.IpSecManager.IpSecTunnelInterface, int, @NonNull android.net.IpSecTransform) throws java.io.IOException;
     method @NonNull @RequiresPermission(android.Manifest.permission.MANAGE_IPSEC_TUNNELS) public android.net.IpSecManager.IpSecTunnelInterface createIpSecTunnelInterface(@NonNull java.net.InetAddress, @NonNull java.net.InetAddress, @NonNull android.net.Network) throws java.io.IOException, android.net.IpSecManager.ResourceUnavailableException;
+    method @RequiresPermission(android.Manifest.permission.MANAGE_IPSEC_TUNNELS) public void startTunnelModeTransformMigration(@NonNull android.net.IpSecTransform, @NonNull java.net.InetAddress, @NonNull java.net.InetAddress);
   }
 
   public static final class IpSecManager.IpSecTunnelInterface implements java.lang.AutoCloseable {
diff --git a/framework-t/src/android/net/IpSecManager.java b/framework-t/src/android/net/IpSecManager.java
index ff021d6..3afa6ef 100644
--- a/framework-t/src/android/net/IpSecManager.java
+++ b/framework-t/src/android/net/IpSecManager.java
@@ -273,7 +273,7 @@
             } catch (RemoteException e) {
                 throw e.rethrowFromSystemServer();
             }
-            mCloseGuard.open("open");
+            mCloseGuard.open("close");
         }
 
         /** @hide */
@@ -823,16 +823,18 @@
          * Update the underlying network for this IpSecTunnelInterface.
          *
          * <p>This new underlying network will be used for all transforms applied AFTER this call is
-         * complete. Before new {@link IpSecTransform}(s) with matching addresses are applied to
-         * this tunnel interface, traffic will still use the old SA, and be routed on the old
+         * complete. Before {@link IpSecTransform}(s) with matching addresses are applied to this
+         * tunnel interface, traffic will still use the old transform, and be routed on the old
          * underlying network.
          *
          * <p>To migrate IPsec tunnel mode traffic, a caller should:
          *
          * <ol>
          *   <li>Update the IpSecTunnelInterface’s underlying network.
-         *   <li>Apply {@link IpSecTransform}(s) with matching addresses to this
-         *       IpSecTunnelInterface.
+         *   <li>Apply the new {@link IpSecTransform}(s) to this IpSecTunnelInterface. These can be
+         *       new {@link IpSecTransform}(s) with matching addresses, or {@link IpSecTransform}(s)
+         *       that have started migration (see {@link
+         *       IpSecManager#startTunnelModeTransformMigration}).
          * </ol>
          *
          * @param underlyingNetwork the new {@link Network} that will carry traffic for this tunnel.
@@ -841,7 +843,6 @@
          *     method will throw an {@link IllegalArgumentException}. If the IpSecTunnelInterface is
          *     later added to this network, all outbound traffic will be blackholed.
          */
-        // TODO: b/169171001 Update the documentation when transform migration is supported.
         // The purpose of making updating network and applying transforms separate is to leave open
         // the possibility to support lossless migration procedures. To do that, Android platform
         // will need to support multiple inbound tunnel mode transforms, just like it can support
@@ -1033,9 +1034,10 @@
      * @param newDestinationAddress the new destination address
      * @hide
      */
+    @SystemApi
     @RequiresFeature(FEATURE_IPSEC_TUNNEL_MIGRATION)
     @RequiresPermission(android.Manifest.permission.MANAGE_IPSEC_TUNNELS)
-    public void startMigration(
+    public void startTunnelModeTransformMigration(
             @NonNull IpSecTransform transform,
             @NonNull InetAddress newSourceAddress,
             @NonNull InetAddress newDestinationAddress) {
diff --git a/framework-t/src/android/net/IpSecTransform.java b/framework-t/src/android/net/IpSecTransform.java
index 68ae5de..c236b6c 100644
--- a/framework-t/src/android/net/IpSecTransform.java
+++ b/framework-t/src/android/net/IpSecTransform.java
@@ -126,7 +126,7 @@
                 checkResultStatus(status);
                 mResourceId = result.resourceId;
                 Log.d(TAG, "Added Transform with Id " + mResourceId);
-                mCloseGuard.open("build");
+                mCloseGuard.open("close");
             } catch (ServiceSpecificException e) {
                 throw IpSecManager.rethrowUncheckedExceptionFromServiceSpecificException(e);
             }
diff --git a/framework-t/src/android/net/NetworkTemplate.java b/framework-t/src/android/net/NetworkTemplate.java
index b2da371..f633a8f 100644
--- a/framework-t/src/android/net/NetworkTemplate.java
+++ b/framework-t/src/android/net/NetworkTemplate.java
@@ -88,18 +88,6 @@
     public static final int MATCH_WIFI = 4;
     /** Match rule to match ethernet networks. */
     public static final int MATCH_ETHERNET = 5;
-    /**
-     * Match rule to match all cellular networks.
-     *
-     * @hide
-     */
-    public static final int MATCH_MOBILE_WILDCARD = 6;
-    /**
-     * Match rule to match all wifi networks.
-     *
-     * @hide
-     */
-    public static final int MATCH_WIFI_WILDCARD = 7;
     /** Match rule to match bluetooth networks. */
     public static final int MATCH_BLUETOOTH = 8;
     /**
@@ -177,8 +165,6 @@
             case MATCH_MOBILE:
             case MATCH_WIFI:
             case MATCH_ETHERNET:
-            case MATCH_MOBILE_WILDCARD:
-            case MATCH_WIFI_WILDCARD:
             case MATCH_BLUETOOTH:
             case MATCH_PROXY:
             case MATCH_CARRIER:
@@ -258,7 +244,6 @@
     }
 
     private final int mMatchRule;
-    private final String mSubscriberId;
 
     /**
      * Ugh, templates are designed to target a single subscriber, but we might
@@ -285,9 +270,8 @@
 
     private static void checkValidMatchSubscriberIds(int matchRule, String[] matchSubscriberIds) {
         switch (matchRule) {
-            case MATCH_MOBILE:
             case MATCH_CARRIER:
-                // MOBILE and CARRIER templates must always specify a subscriber ID.
+                // CARRIER templates must always specify a valid subscriber ID.
                 if (matchSubscriberIds.length == 0) {
                     throw new IllegalArgumentException("checkValidMatchSubscriberIds with empty"
                             + " list of ids for rule" + getMatchRuleName(matchRule));
@@ -313,21 +297,20 @@
         // to metered networks. It is now possible to match mobile with any meteredness, but
         // in order to preserve backward compatibility of @UnsupportedAppUsage methods, this
         //constructor passes METERED_YES for these types.
-        this(matchRule, subscriberId, new String[] { subscriberId },
+        this(matchRule, new String[] { subscriberId },
                 wifiNetworkKey != null ? new String[] { wifiNetworkKey } : new String[0],
-                (matchRule == MATCH_MOBILE || matchRule == MATCH_MOBILE_WILDCARD
-                        || matchRule == MATCH_CARRIER) ? METERED_YES : METERED_ALL,
-                ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, OEM_MANAGED_ALL);
+                (matchRule == MATCH_MOBILE || matchRule == MATCH_CARRIER)
+                        ? METERED_YES : METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL,
+                NETWORK_TYPE_ALL, OEM_MANAGED_ALL);
     }
 
     /** @hide */
-    public NetworkTemplate(int matchRule, String subscriberId, String[] matchSubscriberIds,
-            String[] matchWifiNetworkKeys, int metered, int roaming,
-            int defaultNetwork, int ratType, int oemManaged) {
+    public NetworkTemplate(int matchRule, String[] matchSubscriberIds,
+            String[] matchWifiNetworkKeys, int metered, int roaming, int defaultNetwork,
+            int ratType, int oemManaged) {
         Objects.requireNonNull(matchWifiNetworkKeys);
         Objects.requireNonNull(matchSubscriberIds);
         mMatchRule = matchRule;
-        mSubscriberId = subscriberId;
         mMatchSubscriberIds = matchSubscriberIds;
         mMatchWifiNetworkKeys = matchWifiNetworkKeys;
         mMetered = metered;
@@ -344,7 +327,6 @@
 
     private NetworkTemplate(Parcel in) {
         mMatchRule = in.readInt();
-        mSubscriberId = in.readString();
         mMatchSubscriberIds = in.createStringArray();
         mMatchWifiNetworkKeys = in.createStringArray();
         mMetered = in.readInt();
@@ -357,7 +339,6 @@
     @Override
     public void writeToParcel(@NonNull Parcel dest, int flags) {
         dest.writeInt(mMatchRule);
-        dest.writeString(mSubscriberId);
         dest.writeStringArray(mMatchSubscriberIds);
         dest.writeStringArray(mMatchWifiNetworkKeys);
         dest.writeInt(mMetered);
@@ -376,10 +357,6 @@
     public String toString() {
         final StringBuilder builder = new StringBuilder("NetworkTemplate: ");
         builder.append("matchRule=").append(getMatchRuleName(mMatchRule));
-        if (mSubscriberId != null) {
-            builder.append(", subscriberId=").append(
-                    NetworkIdentityUtils.scrubSubscriberId(mSubscriberId));
-        }
         if (mMatchSubscriberIds != null) {
             builder.append(", matchSubscriberIds=").append(
                     Arrays.toString(NetworkIdentityUtils.scrubSubscriberIds(mMatchSubscriberIds)));
@@ -406,7 +383,7 @@
 
     @Override
     public int hashCode() {
-        return Objects.hash(mMatchRule, mSubscriberId, Arrays.hashCode(mMatchWifiNetworkKeys),
+        return Objects.hash(mMatchRule, Arrays.hashCode(mMatchWifiNetworkKeys),
                 mMetered, mRoaming, mDefaultNetwork, mRatType, mOemManaged);
     }
 
@@ -415,7 +392,6 @@
         if (obj instanceof NetworkTemplate) {
             final NetworkTemplate other = (NetworkTemplate) obj;
             return mMatchRule == other.mMatchRule
-                    && Objects.equals(mSubscriberId, other.mSubscriberId)
                     && mMetered == other.mMetered
                     && mRoaming == other.mRoaming
                     && mDefaultNetwork == other.mDefaultNetwork
@@ -426,42 +402,25 @@
         return false;
     }
 
-    /** @hide */
-    public boolean isMatchRuleMobile() {
-        switch (mMatchRule) {
-            case MATCH_MOBILE:
-            case MATCH_MOBILE_WILDCARD:
-                return true;
-            default:
-                return false;
-        }
-    }
-
     /**
      * Get match rule of the template. See {@code MATCH_*}.
      */
-    @UnsupportedAppUsage
     public int getMatchRule() {
-        // Wildcard rules are not exposed. For external callers, convert wildcard rules to
-        // exposed rules before returning.
-        switch (mMatchRule) {
-            case MATCH_MOBILE_WILDCARD:
-                return MATCH_MOBILE;
-            case MATCH_WIFI_WILDCARD:
-                return MATCH_WIFI;
-            default:
-                return mMatchRule;
-        }
+        return mMatchRule;
     }
 
     /**
      * Get subscriber Id of the template.
+     *
+     * @deprecated User should use {@link #getSubscriberIds} instead.
      * @hide
      */
+    @Deprecated
     @Nullable
-    @UnsupportedAppUsage
+    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.TIRAMISU,
+            publicAlternatives = "Caller should use {@code getSubscriberIds} instead.")
     public String getSubscriberId() {
-        return mSubscriberId;
+        return CollectionUtils.isEmpty(mMatchSubscriberIds) ? null : mMatchSubscriberIds[0];
     }
 
     /**
@@ -548,10 +507,6 @@
                 return matchesWifi(ident);
             case MATCH_ETHERNET:
                 return matchesEthernet(ident);
-            case MATCH_MOBILE_WILDCARD:
-                return matchesMobileWildcard(ident);
-            case MATCH_WIFI_WILDCARD:
-                return matchesWifiWildcard(ident);
             case MATCH_BLUETOOTH:
                 return matchesBluetooth(ident);
             case MATCH_PROXY:
@@ -632,9 +587,9 @@
             // TODO: consider matching against WiMAX subscriber identity
             return true;
         } else {
-            return ident.mType == TYPE_MOBILE && !CollectionUtils.isEmpty(mMatchSubscriberIds)
-                    && CollectionUtils.contains(mMatchSubscriberIds, ident.mSubscriberId)
-                    && matchesCollapsedRatType(ident);
+            return (CollectionUtils.isEmpty(mMatchSubscriberIds)
+                || CollectionUtils.contains(mMatchSubscriberIds, ident.mSubscriberId))
+                && (ident.mType == TYPE_MOBILE && matchesCollapsedRatType(ident));
         }
     }
 
@@ -646,6 +601,8 @@
             case TYPE_WIFI:
                 return matchesSubscriberId(ident.mSubscriberId)
                         && matchesWifiNetworkKey(ident.mWifiNetworkKey);
+            case TYPE_WIFI_P2P:
+                return CollectionUtils.isEmpty(mMatchWifiNetworkKeys);
             default:
                 return false;
         }
@@ -681,24 +638,6 @@
                 || CollectionUtils.contains(mMatchWifiNetworkKeys, ident.mWifiNetworkKey)));
     }
 
-    private boolean matchesMobileWildcard(NetworkIdentity ident) {
-        if (ident.mType == TYPE_WIMAX) {
-            return true;
-        } else {
-            return ident.mType == TYPE_MOBILE && matchesCollapsedRatType(ident);
-        }
-    }
-
-    private boolean matchesWifiWildcard(NetworkIdentity ident) {
-        switch (ident.mType) {
-            case TYPE_WIFI:
-            case TYPE_WIFI_P2P:
-                return true;
-            default:
-                return false;
-        }
-    }
-
     /**
      * Check if matches Bluetooth network template.
      */
@@ -724,10 +663,6 @@
                 return "WIFI";
             case MATCH_ETHERNET:
                 return "ETHERNET";
-            case MATCH_MOBILE_WILDCARD:
-                return "MOBILE_WILDCARD";
-            case MATCH_WIFI_WILDCARD:
-                return "WIFI_WILDCARD";
             case MATCH_BLUETOOTH:
                 return "BLUETOOTH";
             case MATCH_PROXY:
@@ -775,20 +710,20 @@
         // information. For instances:
         // The TYPE_WIFI with subscriberId means that it is a merged carrier wifi network.
         // The TYPE_CARRIER means that the network associate to specific carrier network.
-        if (template.mSubscriberId == null) return template;
 
-        if (CollectionUtils.contains(merged, template.mSubscriberId)) {
+        if (CollectionUtils.isEmpty(template.mMatchSubscriberIds)) return template;
+
+        if (CollectionUtils.contains(merged, template.mMatchSubscriberIds[0])) {
             // Requested template subscriber is part of the merge group; return
             // a template that matches all merged subscribers.
             final String[] matchWifiNetworkKeys = template.mMatchWifiNetworkKeys;
             // TODO: Use NetworkTemplate.Builder to build a template after NetworkTemplate
             // could handle incompatible subscriberIds. See b/217805241.
-            return new NetworkTemplate(template.mMatchRule, merged[0], merged,
+            return new NetworkTemplate(template.mMatchRule, merged,
                     CollectionUtils.isEmpty(matchWifiNetworkKeys)
                             ? new String[0] : new String[] { matchWifiNetworkKeys[0] },
-                    (template.mMatchRule == MATCH_MOBILE
-                            || template.mMatchRule == MATCH_MOBILE_WILDCARD
-                            || template.mMatchRule == MATCH_CARRIER) ? METERED_YES : METERED_ALL,
+                    (template.mMatchRule == MATCH_MOBILE || template.mMatchRule == MATCH_CARRIER)
+                            ? METERED_YES : METERED_ALL,
                     ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, OEM_MANAGED_ALL);
         }
 
@@ -956,10 +891,7 @@
          * @param matchRule the target match rule to be checked.
          */
         private static void assertRequestableMatchRule(final int matchRule) {
-            if (!isKnownMatchRule(matchRule)
-                    || matchRule == MATCH_PROXY
-                    || matchRule == MATCH_MOBILE_WILDCARD
-                    || matchRule == MATCH_WIFI_WILDCARD) {
+            if (!isKnownMatchRule(matchRule) || matchRule == MATCH_PROXY) {
                 throw new IllegalArgumentException("Invalid match rule: "
                         + getMatchRuleName(matchRule));
             }
@@ -980,20 +912,6 @@
         }
 
         /**
-         * For backward compatibility, deduce match rule to a wildcard match rule
-         * if the Subscriber Ids are empty.
-         */
-        private int getWildcardDeducedMatchRule() {
-            if (mMatchRule == MATCH_MOBILE && mMatchSubscriberIds.isEmpty()) {
-                return MATCH_MOBILE_WILDCARD;
-            } else if (mMatchRule == MATCH_WIFI && mMatchSubscriberIds.isEmpty()
-                    && mMatchWifiNetworkKeys.isEmpty()) {
-                return MATCH_WIFI_WILDCARD;
-            }
-            return mMatchRule;
-        }
-
-        /**
          * Builds the instance of the NetworkTemplate.
          *
          * @return the built instance of NetworkTemplate.
@@ -1001,8 +919,7 @@
         @NonNull
         public NetworkTemplate build() {
             assertRequestableParameters();
-            return new NetworkTemplate(getWildcardDeducedMatchRule(),
-                    mMatchSubscriberIds.isEmpty() ? null : mMatchSubscriberIds.iterator().next(),
+            return new NetworkTemplate(mMatchRule,
                     mMatchSubscriberIds.toArray(new String[0]),
                     mMatchWifiNetworkKeys.toArray(new String[0]), mMetered, mRoaming,
                     mDefaultNetwork, mRatType, mOemManaged);
diff --git a/framework-t/src/android/net/nsd/INsdManagerCallback.aidl b/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
index 1a262ec..d89bfa9 100644
--- a/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
+++ b/framework-t/src/android/net/nsd/INsdManagerCallback.aidl
@@ -36,4 +36,10 @@
     void onUnregisterServiceSucceeded(int listenerKey);
     void onResolveServiceFailed(int listenerKey, int error);
     void onResolveServiceSucceeded(int listenerKey, in NsdServiceInfo info);
+    void onStopResolutionFailed(int listenerKey, int error);
+    void onStopResolutionSucceeded(int listenerKey);
+    void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error);
+    void onServiceUpdated(int listenerKey, in NsdServiceInfo info);
+    void onServiceUpdatedLost(int listenerKey);
+    void onServiceInfoCallbackUnregistered(int listenerKey);
 }
diff --git a/framework-t/src/android/net/nsd/INsdServiceConnector.aidl b/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
index b06ae55..5533154 100644
--- a/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
+++ b/framework-t/src/android/net/nsd/INsdServiceConnector.aidl
@@ -32,4 +32,7 @@
     void stopDiscovery(int listenerKey);
     void resolveService(int listenerKey, in NsdServiceInfo serviceInfo);
     void startDaemon();
+    void stopResolution(int listenerKey);
+    void registerServiceInfoCallback(int listenerKey, in NsdServiceInfo serviceInfo);
+    void unregisterServiceInfoCallback(int listenerKey);
 }
\ No newline at end of file
diff --git a/framework-t/src/android/net/nsd/NsdManager.java b/framework-t/src/android/net/nsd/NsdManager.java
index fb3b1d6..122e3a0 100644
--- a/framework-t/src/android/net/nsd/NsdManager.java
+++ b/framework-t/src/android/net/nsd/NsdManager.java
@@ -16,6 +16,7 @@
 
 package android.net.nsd;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
@@ -44,6 +45,8 @@
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.Objects;
 import java.util.concurrent.Executor;
 
@@ -230,7 +233,6 @@
 
     /** @hide */
     public static final int DAEMON_CLEANUP                          = 18;
-
     /** @hide */
     public static final int DAEMON_STARTUP                          = 19;
 
@@ -242,6 +244,30 @@
     /** @hide */
     public static final int UNREGISTER_CLIENT                       = 22;
 
+    /** @hide */
+    public static final int MDNS_DISCOVERY_MANAGER_EVENT            = 23;
+
+    /** @hide */
+    public static final int STOP_RESOLUTION                         = 24;
+    /** @hide */
+    public static final int STOP_RESOLUTION_FAILED                  = 25;
+    /** @hide */
+    public static final int STOP_RESOLUTION_SUCCEEDED               = 26;
+
+    /** @hide */
+    public static final int REGISTER_SERVICE_CALLBACK               = 27;
+    /** @hide */
+    public static final int REGISTER_SERVICE_CALLBACK_FAILED        = 28;
+    /** @hide */
+    public static final int SERVICE_UPDATED                         = 29;
+    /** @hide */
+    public static final int SERVICE_UPDATED_LOST                    = 30;
+
+    /** @hide */
+    public static final int UNREGISTER_SERVICE_CALLBACK             = 31;
+    /** @hide */
+    public static final int UNREGISTER_SERVICE_CALLBACK_SUCCEEDED   = 32;
+
     /** Dns based service discovery protocol */
     public static final int PROTOCOL_DNS_SD = 0x0001;
 
@@ -267,6 +293,15 @@
         EVENT_NAMES.put(DAEMON_CLEANUP, "DAEMON_CLEANUP");
         EVENT_NAMES.put(DAEMON_STARTUP, "DAEMON_STARTUP");
         EVENT_NAMES.put(MDNS_SERVICE_EVENT, "MDNS_SERVICE_EVENT");
+        EVENT_NAMES.put(STOP_RESOLUTION, "STOP_RESOLUTION");
+        EVENT_NAMES.put(STOP_RESOLUTION_FAILED, "STOP_RESOLUTION_FAILED");
+        EVENT_NAMES.put(STOP_RESOLUTION_SUCCEEDED, "STOP_RESOLUTION_SUCCEEDED");
+        EVENT_NAMES.put(REGISTER_SERVICE_CALLBACK, "REGISTER_SERVICE_CALLBACK");
+        EVENT_NAMES.put(REGISTER_SERVICE_CALLBACK_FAILED, "REGISTER_SERVICE_CALLBACK_FAILED");
+        EVENT_NAMES.put(SERVICE_UPDATED, "SERVICE_UPDATED");
+        EVENT_NAMES.put(UNREGISTER_SERVICE_CALLBACK, "UNREGISTER_SERVICE_CALLBACK");
+        EVENT_NAMES.put(UNREGISTER_SERVICE_CALLBACK_SUCCEEDED,
+                "UNREGISTER_SERVICE_CALLBACK_SUCCEEDED");
     }
 
     /** @hide */
@@ -592,6 +627,36 @@
         public void onResolveServiceSucceeded(int listenerKey, NsdServiceInfo info) {
             sendInfo(RESOLVE_SERVICE_SUCCEEDED, listenerKey, info);
         }
+
+        @Override
+        public void onStopResolutionFailed(int listenerKey, int error) {
+            sendError(STOP_RESOLUTION_FAILED, listenerKey, error);
+        }
+
+        @Override
+        public void onStopResolutionSucceeded(int listenerKey) {
+            sendNoArg(STOP_RESOLUTION_SUCCEEDED, listenerKey);
+        }
+
+        @Override
+        public void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error) {
+            sendError(REGISTER_SERVICE_CALLBACK_FAILED, listenerKey, error);
+        }
+
+        @Override
+        public void onServiceUpdated(int listenerKey, NsdServiceInfo info) {
+            sendInfo(SERVICE_UPDATED, listenerKey, info);
+        }
+
+        @Override
+        public void onServiceUpdatedLost(int listenerKey) {
+            sendNoArg(SERVICE_UPDATED_LOST, listenerKey);
+        }
+
+        @Override
+        public void onServiceInfoCallbackUnregistered(int listenerKey) {
+            sendNoArg(UNREGISTER_SERVICE_CALLBACK_SUCCEEDED, listenerKey);
+        }
     }
 
     /**
@@ -615,6 +680,37 @@
      */
     public static final int FAILURE_MAX_LIMIT                   = 4;
 
+    /**
+     * Indicates that the stop operation failed because it is not running.
+     * This failure is passed with {@link ResolveListener#onStopResolutionFailed}.
+     */
+    public static final int FAILURE_OPERATION_NOT_RUNNING       = 5;
+
+    /**
+     * Indicates that the service has failed to resolve because of bad parameters.
+     *
+     * This failure is passed with
+     * {@link ServiceInfoCallback#onServiceInfoCallbackRegistrationFailed}.
+     */
+    public static final int FAILURE_BAD_PARAMETERS              = 6;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(value = {
+            FAILURE_OPERATION_NOT_RUNNING,
+    })
+    public @interface StopOperationFailureCode {
+    }
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(value = {
+            FAILURE_ALREADY_ACTIVE,
+            FAILURE_BAD_PARAMETERS,
+    })
+    public @interface ResolutionFailureCode {
+    }
+
     /** Interface for callback invocation for service discovery */
     public interface DiscoveryListener {
 
@@ -643,12 +739,97 @@
         public void onServiceUnregistered(NsdServiceInfo serviceInfo);
     }
 
-    /** Interface for callback invocation for service resolution */
+    /**
+     * Callback for use with {@link NsdManager#resolveService} to resolve the service info and use
+     * with {@link NsdManager#stopServiceResolution} to stop resolution.
+     */
     public interface ResolveListener {
 
-        public void onResolveFailed(NsdServiceInfo serviceInfo, int errorCode);
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolution was failed with an error.
+         *
+         * A resolution operation would call either onServiceResolved or onResolveFailed once based
+         * on the result.
+         */
+        void onResolveFailed(NsdServiceInfo serviceInfo, int errorCode);
 
-        public void onServiceResolved(NsdServiceInfo serviceInfo);
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolved service info.
+         *
+         * A resolution operation would call either onServiceResolved or onResolveFailed once based
+         * on the result.
+         */
+        void onServiceResolved(NsdServiceInfo serviceInfo);
+
+        /**
+         * Called on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report the resolution was stopped.
+         *
+         * A stop resolution operation would call either onResolveStopped or onStopResolutionFailed
+         * once based on the result.
+         */
+        default void onResolveStopped(@NonNull NsdServiceInfo serviceInfo) { }
+
+        /**
+         * Called once on the internal thread or with an executor passed to
+         * {@link NsdManager#resolveService} to report that stopping resolution failed with an
+         * error.
+         *
+         * A stop resolution operation would call either onResolveStopped or onStopResolutionFailed
+         * once based on the result.
+         */
+        default void onStopResolutionFailed(@NonNull NsdServiceInfo serviceInfo,
+                @StopOperationFailureCode int errorCode) { }
+    }
+
+    /**
+     * Callback to listen to service info updates.
+     *
+     * For use with {@link NsdManager#registerServiceInfoCallback} to register, and with
+     * {@link NsdManager#unregisterServiceInfoCallback} to stop listening.
+     */
+    public interface ServiceInfoCallback {
+
+        /**
+         * Reports that registering the callback failed with an error.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}.
+         *
+         * onServiceInfoCallbackRegistrationFailed will be called exactly once when the callback
+         * could not be registered. No other callback will be sent in that case.
+         */
+        void onServiceInfoCallbackRegistrationFailed(@ResolutionFailureCode int errorCode);
+
+        /**
+         * Reports updated service info.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}. Any
+         * service updates will be notified via this callback until
+         * {@link NsdManager#unregisterServiceInfoCallback} is called. This will only be called once
+         * the service is found, so may never be called if the service is never present.
+         */
+        void onServiceUpdated(@NonNull NsdServiceInfo serviceInfo);
+
+        /**
+         * Reports when the service that this callback listens to becomes unavailable.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}. The
+         * service may become available again, in which case {@link #onServiceUpdated} will be
+         * called.
+         */
+        void onServiceLost();
+
+        /**
+         * Reports that service info updates have stopped.
+         *
+         * Called on the executor passed to {@link NsdManager#registerServiceInfoCallback}.
+         *
+         * A callback unregistration operation will call onServiceInfoCallbackUnregistered
+         * once. After this, the callback may be reused.
+         */
+        void onServiceInfoCallbackUnregistered();
     }
 
     @VisibleForTesting
@@ -741,6 +922,33 @@
                     executor.execute(() -> ((ResolveListener) listener).onServiceResolved(
                             (NsdServiceInfo) obj));
                     break;
+                case STOP_RESOLUTION_FAILED:
+                    removeListener(key);
+                    executor.execute(() -> ((ResolveListener) listener).onStopResolutionFailed(
+                            ns, errorCode));
+                    break;
+                case STOP_RESOLUTION_SUCCEEDED:
+                    removeListener(key);
+                    executor.execute(() -> ((ResolveListener) listener).onResolveStopped(
+                            ns));
+                    break;
+                case REGISTER_SERVICE_CALLBACK_FAILED:
+                    removeListener(key);
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceInfoCallbackRegistrationFailed(errorCode));
+                    break;
+                case SERVICE_UPDATED:
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceUpdated((NsdServiceInfo) obj));
+                    break;
+                case SERVICE_UPDATED_LOST:
+                    executor.execute(() -> ((ServiceInfoCallback) listener).onServiceLost());
+                    break;
+                case UNREGISTER_SERVICE_CALLBACK_SUCCEEDED:
+                    removeListener(key);
+                    executor.execute(() -> ((ServiceInfoCallback) listener)
+                            .onServiceInfoCallbackUnregistered());
+                    break;
                 default:
                     Log.d(TAG, "Ignored " + message);
                     break;
@@ -1052,7 +1260,14 @@
      * @param serviceInfo service to be resolved
      * @param listener to receive callback upon success or failure. Cannot be null.
      * Cannot be in use for an active service resolution.
+     *
+     * @deprecated the returned ServiceInfo may get stale at any time after resolution, including
+     * immediately after the callback is called, and may not contain some service information that
+     * could be delivered later, like additional host addresses. Prefer using
+     * {@link #registerServiceInfoCallback}, which will keep the application up-to-date with the
+     * state of the service.
      */
+    @Deprecated
     public void resolveService(NsdServiceInfo serviceInfo, ResolveListener listener) {
         resolveService(serviceInfo, Runnable::run, listener);
     }
@@ -1064,7 +1279,14 @@
      * @param serviceInfo service to be resolved
      * @param executor Executor to run listener callbacks with
      * @param listener to receive callback upon success or failure.
+     *
+     * @deprecated the returned ServiceInfo may get stale at any time after resolution, including
+     * immediately after the callback is called, and may not contain some service information that
+     * could be delivered later, like additional host addresses. Prefer using
+     * {@link #registerServiceInfoCallback}, which will keep the application up-to-date with the
+     * state of the service.
      */
+    @Deprecated
     public void resolveService(@NonNull NsdServiceInfo serviceInfo,
             @NonNull Executor executor, @NonNull ResolveListener listener) {
         checkServiceInfo(serviceInfo);
@@ -1076,6 +1298,85 @@
         }
     }
 
+    /**
+     * Stop service resolution initiated with {@link #resolveService}.
+     *
+     * A successful stop is notified with a call to {@link ResolveListener#onResolveStopped}.
+     *
+     * <p> Upon failure to stop service resolution for example if resolution is done or the
+     * requester stops resolution repeatedly, the application is notified
+     * {@link ResolveListener#onStopResolutionFailed} with {@link #FAILURE_OPERATION_NOT_RUNNING}
+     *
+     * @param listener This should be a listener object that was passed to {@link #resolveService}.
+     *                 It identifies the resolution that should be stopped and notifies of a
+     *                 successful or unsuccessful stop. Throws {@code IllegalArgumentException} if
+     *                 the listener was not passed to resolveService before.
+     */
+    public void stopServiceResolution(@NonNull ResolveListener listener) {
+        int id = getListenerKey(listener);
+        try {
+            mService.stopResolution(id);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Register a callback to listen for updates to a service.
+     *
+     * An application can listen to a service to continuously monitor availability of given service.
+     * The callback methods will be called on the passed executor. And service updates are sent with
+     * continuous calls to {@link ServiceInfoCallback#onServiceUpdated}.
+     *
+     * This is different from {@link #resolveService} which provides one shot service information.
+     *
+     * <p> An application can listen to a service once a time. It needs to cancel the registration
+     * before registering other callbacks. Upon failure to register a callback for example if
+     * it's a duplicated registration, the application is notified through
+     * {@link ServiceInfoCallback#onServiceInfoCallbackRegistrationFailed} with
+     * {@link #FAILURE_BAD_PARAMETERS} or {@link #FAILURE_ALREADY_ACTIVE}.
+     *
+     * @param serviceInfo the service to receive updates for
+     * @param executor Executor to run callbacks with
+     * @param listener to receive callback upon service update
+     */
+    public void registerServiceInfoCallback(@NonNull NsdServiceInfo serviceInfo,
+            @NonNull Executor executor, @NonNull ServiceInfoCallback listener) {
+        checkServiceInfo(serviceInfo);
+        int key = putListener(listener, executor, serviceInfo);
+        try {
+            mService.registerServiceInfoCallback(key, serviceInfo);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Unregister a callback registered with {@link #registerServiceInfoCallback}.
+     *
+     * A successful unregistration is notified with a call to
+     * {@link ServiceInfoCallback#onServiceInfoCallbackUnregistered}. The same callback can only be
+     * reused after this is called.
+     *
+     * <p>If the callback is not already registered, this will throw with
+     * {@link IllegalArgumentException}.
+     *
+     * @param listener This should be a listener object that was passed to
+     *                 {@link #registerServiceInfoCallback}. It identifies the registration that
+     *                 should be unregistered and notifies of a successful or unsuccessful stop.
+     *                 Throws {@code IllegalArgumentException} if the listener was not passed to
+     *                 {@link #registerServiceInfoCallback} before.
+     */
+    public void unregisterServiceInfoCallback(@NonNull ServiceInfoCallback listener) {
+        // Will throw IllegalArgumentException if the listener is not known
+        int id = getListenerKey(listener);
+        try {
+            mService.unregisterServiceInfoCallback(id);
+        } catch (RemoteException e) {
+            e.rethrowFromSystemServer();
+        }
+    }
+
     private static void checkListener(Object listener) {
         Objects.requireNonNull(listener, "listener cannot be null");
     }
diff --git a/framework-t/src/android/net/nsd/NsdServiceInfo.java b/framework-t/src/android/net/nsd/NsdServiceInfo.java
index 6438a60..caeecdd 100644
--- a/framework-t/src/android/net/nsd/NsdServiceInfo.java
+++ b/framework-t/src/android/net/nsd/NsdServiceInfo.java
@@ -26,10 +26,14 @@
 import android.util.ArrayMap;
 import android.util.Log;
 
+import com.android.net.module.util.InetAddressUtils;
+
 import java.io.UnsupportedEncodingException;
 import java.net.InetAddress;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
 import java.util.Map;
 
 /**
@@ -46,7 +50,7 @@
 
     private final ArrayMap<String, byte[]> mTxtRecord = new ArrayMap<>();
 
-    private InetAddress mHost;
+    private final List<InetAddress> mHostAddresses = new ArrayList<>();
 
     private int mPort;
 
@@ -84,17 +88,32 @@
         mServiceType = s;
     }
 
-    /** Get the host address. The host address is valid for a resolved service. */
+    /**
+     * Get the host address. The host address is valid for a resolved service.
+     *
+     * @deprecated Use {@link #getHostAddresses()} to get the entire list of addresses for the host.
+     */
+    @Deprecated
     public InetAddress getHost() {
-        return mHost;
+        return mHostAddresses.size() == 0 ? null : mHostAddresses.get(0);
     }
 
-    /** Set the host address */
+    /**
+     * Set the host address
+     *
+     * @deprecated Use {@link #setHostAddresses(List)} to set multiple addresses for the host.
+     */
+    @Deprecated
     public void setHost(InetAddress s) {
-        mHost = s;
+        setHostAddresses(Collections.singletonList(s));
     }
 
-    /** Get port number. The port number is valid for a resolved service. */
+    /**
+     * Get port number. The port number is valid for a resolved service.
+     *
+     * The port is valid for all addresses.
+     * @see #getHostAddresses()
+     */
     public int getPort() {
         return mPort;
     }
@@ -105,6 +124,24 @@
     }
 
     /**
+     * Get the host addresses.
+     *
+     * All host addresses are valid for the resolved service.
+     * All addresses share the same port
+     * @see #getPort()
+     */
+    @NonNull
+    public List<InetAddress> getHostAddresses() {
+        return new ArrayList<>(mHostAddresses);
+    }
+
+    /** Set the host addresses */
+    public void setHostAddresses(@NonNull List<InetAddress> addresses) {
+        mHostAddresses.clear();
+        mHostAddresses.addAll(addresses);
+    }
+
+    /**
      * Unpack txt information from a base-64 encoded byte array.
      *
      * @param txtRecordsRawBytes The raw base64 encoded byte array.
@@ -359,7 +396,7 @@
         StringBuilder sb = new StringBuilder();
         sb.append("name: ").append(mServiceName)
                 .append(", type: ").append(mServiceType)
-                .append(", host: ").append(mHost)
+                .append(", hostAddresses: ").append(TextUtils.join(", ", mHostAddresses))
                 .append(", port: ").append(mPort)
                 .append(", network: ").append(mNetwork);
 
@@ -377,12 +414,6 @@
     public void writeToParcel(Parcel dest, int flags) {
         dest.writeString(mServiceName);
         dest.writeString(mServiceType);
-        if (mHost != null) {
-            dest.writeInt(1);
-            dest.writeByteArray(mHost.getAddress());
-        } else {
-            dest.writeInt(0);
-        }
         dest.writeInt(mPort);
 
         // TXT record key/value pairs.
@@ -401,6 +432,10 @@
 
         dest.writeParcelable(mNetwork, 0);
         dest.writeInt(mInterfaceIndex);
+        dest.writeInt(mHostAddresses.size());
+        for (InetAddress address : mHostAddresses) {
+            InetAddressUtils.parcelInetAddress(dest, address, flags);
+        }
     }
 
     /** Implement the Parcelable interface */
@@ -410,13 +445,6 @@
                 NsdServiceInfo info = new NsdServiceInfo();
                 info.mServiceName = in.readString();
                 info.mServiceType = in.readString();
-
-                if (in.readInt() == 1) {
-                    try {
-                        info.mHost = InetAddress.getByAddress(in.createByteArray());
-                    } catch (java.net.UnknownHostException e) {}
-                }
-
                 info.mPort = in.readInt();
 
                 // TXT record key/value pairs.
@@ -432,6 +460,10 @@
                 }
                 info.mNetwork = in.readParcelable(null, Network.class);
                 info.mInterfaceIndex = in.readInt();
+                int size = in.readInt();
+                for (int i = 0; i < size; i++) {
+                    info.mHostAddresses.add(InetAddressUtils.unparcelInetAddress(in));
+                }
                 return info;
             }
 
diff --git a/framework/api/module-lib-current.txt b/framework/api/module-lib-current.txt
index 7669e0e..f623b05 100644
--- a/framework/api/module-lib-current.txt
+++ b/framework/api/module-lib-current.txt
@@ -63,6 +63,7 @@
     field public static final int FIREWALL_RULE_DENY = 2; // 0x2
     field public static final int PROFILE_NETWORK_PREFERENCE_DEFAULT = 0; // 0x0
     field public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE = 1; // 0x1
+    field public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING = 3; // 0x3
     field public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK = 2; // 0x2
   }
 
diff --git a/framework/api/system-current.txt b/framework/api/system-current.txt
index dd3404c..0b03983 100644
--- a/framework/api/system-current.txt
+++ b/framework/api/system-current.txt
@@ -470,7 +470,9 @@
   }
 
   public abstract class SocketKeepalive implements java.lang.AutoCloseable {
+    method public final void start(@IntRange(from=0xa, to=0xe10) int, int);
     field public static final int ERROR_NO_SUCH_SLOT = -33; // 0xffffffdf
+    field public static final int FLAG_AUTOMATIC_ON_OFF = 1; // 0x1
     field public static final int SUCCESS = 0; // 0x0
   }
 
diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 60bc68c..40defd4 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -1232,16 +1232,19 @@
     }
 
     /**
-     * Preference for {@link ProfileNetworkPreference#setPreference(int)}.
+     * Preference for {@link ProfileNetworkPreference.Builder#setPreference(int)}.
      * See {@link #setProfileNetworkPreferences(UserHandle, List, Executor, Runnable)}
-     * Specify that the traffic for this user should by follow the default rules.
+     * Specify that the traffic for this user should by follow the default rules:
+     * applications in the profile designated by the UserHandle behave like any
+     * other application and use the system default network as their default
+     * network. Compare other PROFILE_NETWORK_PREFERENCE_* settings.
      * @hide
      */
     @SystemApi(client = MODULE_LIBRARIES)
     public static final int PROFILE_NETWORK_PREFERENCE_DEFAULT = 0;
 
     /**
-     * Preference for {@link ProfileNetworkPreference#setPreference(int)}.
+     * Preference for {@link ProfileNetworkPreference.Builder#setPreference(int)}.
      * See {@link #setProfileNetworkPreferences(UserHandle, List, Executor, Runnable)}
      * Specify that the traffic for this user should by default go on a network with
      * {@link NetworkCapabilities#NET_CAPABILITY_ENTERPRISE}, and on the system default network
@@ -1252,16 +1255,38 @@
     public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE = 1;
 
     /**
-     * Preference for {@link ProfileNetworkPreference#setPreference(int)}.
+     * Preference for {@link ProfileNetworkPreference.Builder#setPreference(int)}.
      * See {@link #setProfileNetworkPreferences(UserHandle, List, Executor, Runnable)}
      * Specify that the traffic for this user should by default go on a network with
      * {@link NetworkCapabilities#NET_CAPABILITY_ENTERPRISE} and if no such network is available
-     * should not go on the system default network
+     * should not have a default network at all (that is, network accesses that
+     * do not specify a network explicitly terminate with an error), even if there
+     * is a system default network available to apps outside this preference.
+     * The apps can still use a non-enterprise network if they request it explicitly
+     * provided that specific network doesn't require any specific permission they
+     * do not hold.
      * @hide
      */
     @SystemApi(client = MODULE_LIBRARIES)
     public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK = 2;
 
+    /**
+     * Preference for {@link ProfileNetworkPreference.Builder#setPreference(int)}.
+     * See {@link #setProfileNetworkPreferences(UserHandle, List, Executor, Runnable)}
+     * Specify that the traffic for this user should by default go on a network with
+     * {@link NetworkCapabilities#NET_CAPABILITY_ENTERPRISE}.
+     * If there is no such network, the apps will have no default
+     * network at all, even if there are available non-enterprise networks on the
+     * device (that is, network accesses that do not specify a network explicitly
+     * terminate with an error). Additionally, the designated apps should be
+     * blocked from using any non-enterprise network even if they specify it
+     * explicitly, unless they hold specific privilege overriding this (see
+     * {@link android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS}).
+     * @hide
+     */
+    @SystemApi(client = MODULE_LIBRARIES)
+    public static final int PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING = 3;
+
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(value = {
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index 7b6e769..7db231e 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -188,7 +188,7 @@
 
     void startNattKeepaliveWithFd(in Network network, in ParcelFileDescriptor pfd, int resourceId,
             int intervalSeconds, in ISocketKeepaliveCallback cb, String srcAddr,
-            String dstAddr);
+            String dstAddr, boolean automaticOnOffKeepalives);
 
     void startTcpKeepalive(in Network network, in ParcelFileDescriptor pfd, int intervalSeconds,
             in ISocketKeepaliveCallback cb);
diff --git a/framework/src/android/net/NattSocketKeepalive.java b/framework/src/android/net/NattSocketKeepalive.java
index 56cc923..4d45e70 100644
--- a/framework/src/android/net/NattSocketKeepalive.java
+++ b/framework/src/android/net/NattSocketKeepalive.java
@@ -47,13 +47,39 @@
         mResourceId = resourceId;
     }
 
+    /**
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * When a VPN is running with the network for this keepalive as its underlying network, the
+     * system can monitor the TCP connections on that VPN to determine whether this keepalive is
+     * necessary. To enable this behavior, pass {@link SocketKeepalive#FLAG_AUTOMATIC_ON_OFF} into
+     * the flags. When this is enabled, the system will disable sending keepalive packets when
+     * there are no TCP connections over the VPN(s) running over this network to save battery, and
+     * restart sending them as soon as any TCP connection is opened over one of the VPN networks.
+     * When no VPN is running on top of this network, this flag has no effect, i.e. the keepalives
+     * are always sent with the specified interval.
+     *
+     * Also {@see SocketKeepalive}.
+     *
+     * @param intervalSec The target interval in seconds between keepalive packet transmissions.
+     *                    The interval should be between 10 seconds and 3600 seconds. Otherwise,
+     *                    the supplied {@link Callback} will see a call to
+     *                    {@link Callback#onError(int)} with {@link #ERROR_INVALID_INTERVAL}.
+     * @param flags Flags to enable/disable available options on this keepalive.
+     * @hide
+     */
     @Override
-    protected void startImpl(int intervalSec) {
+    protected void startImpl(int intervalSec, int flags) {
+        if (0 != (flags & ~FLAG_AUTOMATIC_ON_OFF)) {
+            throw new IllegalArgumentException("Illegal flag value for "
+                    + this.getClass().getSimpleName() + " : " + flags);
+        }
+        final boolean automaticOnOffKeepalives = 0 != (flags & FLAG_AUTOMATIC_ON_OFF);
         mExecutor.execute(() -> {
             try {
                 mService.startNattKeepaliveWithFd(mNetwork, mPfd, mResourceId,
-                        intervalSec, mCallback,
-                        mSource.getHostAddress(), mDestination.getHostAddress());
+                        intervalSec, mCallback, mSource.getHostAddress(),
+                        mDestination.getHostAddress(), automaticOnOffKeepalives);
             } catch (RemoteException e) {
                 Log.e(TAG, "Error starting socket keepalive: ", e);
                 throw e.rethrowFromSystemServer();
diff --git a/framework/src/android/net/NetworkAgent.java b/framework/src/android/net/NetworkAgent.java
index 1486619..732bd87 100644
--- a/framework/src/android/net/NetworkAgent.java
+++ b/framework/src/android/net/NetworkAgent.java
@@ -483,6 +483,20 @@
      */
     public static final int EVENT_UNREGISTER_AFTER_REPLACEMENT = BASE + 29;
 
+    /**
+     * Sent by AutomaticOnOffKeepaliveTracker periodically (when relevant) to trigger monitor
+     * automatic keepalive request.
+     *
+     * NATT keepalives have an automatic mode where the system only sends keepalive packets when
+     * TCP sockets are open over a VPN. The system will check periodically for presence of
+     * such open sockets, and this message is what triggers the re-evaluation.
+     *
+     * arg1 = hardware slot number of the keepalive
+     * obj = {@link Network} that the keepalive is started on.
+     * @hide
+     */
+    public static final int CMD_MONITOR_AUTOMATIC_KEEPALIVE = BASE + 30;
+
     private static NetworkInfo getLegacyNetworkInfo(final NetworkAgentConfig config) {
         final NetworkInfo ni = new NetworkInfo(config.legacyType, config.legacySubType,
                 config.legacyTypeName, config.legacySubTypeName);
diff --git a/framework/src/android/net/SocketKeepalive.java b/framework/src/android/net/SocketKeepalive.java
index 57cf5e3..90e5e9b 100644
--- a/framework/src/android/net/SocketKeepalive.java
+++ b/framework/src/android/net/SocketKeepalive.java
@@ -16,6 +16,8 @@
 
 package android.net;
 
+import static android.annotation.SystemApi.Client.PRIVILEGED_APPS;
+
 import android.annotation.IntDef;
 import android.annotation.IntRange;
 import android.annotation.NonNull;
@@ -174,6 +176,27 @@
     public @interface KeepaliveEvent {}
 
     /**
+     * Whether the system automatically toggles keepalive when no TCP connection is open on the VPN.
+     *
+     * If this flag is present, the system will monitor the VPN(s) running on top of the specified
+     * network for open TCP connections. When no such connections are open, it will turn off the
+     * keepalives to conserve battery power. When there is at least one such connection it will
+     * turn on the keepalives to make sure functionality is preserved.
+     *
+     * This only works with {@link NattSocketKeepalive}.
+     * @hide
+     */
+    @SystemApi
+    public static final int FLAG_AUTOMATIC_ON_OFF = 1 << 0;
+
+    /** @hide */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "FLAG_"}, flag = true, value = {
+            FLAG_AUTOMATIC_ON_OFF
+    })
+    public @interface StartFlags {}
+
+    /**
      * The minimum interval in seconds between keepalive packet transmissions.
      *
      * @hide
@@ -294,13 +317,15 @@
     }
 
     /**
-     * Request that keepalive be started with the given {@code intervalSec}. See
-     * {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an exception
-     * when invoking start or stop of the {@link SocketKeepalive}, a {@link RemoteException} will be
-     * thrown into the {@code executor}. This is typically not important to catch because the remote
-     * party is the system, so if it is not in shape to communicate through binder the system is
-     * probably going down anyway. If the caller cares regardless, it can use a custom
-     * {@link Executor} to catch the {@link RemoteException}.
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * See {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an
+     * exception when invoking start or stop of the {@link SocketKeepalive}, a
+     * {@link RuntimeException} caused by a {@link RemoteException} will be thrown into the
+     * {@link Executor}. This is typically not important to catch because the remote party is
+     * the system, so if it is not in shape to communicate through binder the system is going
+     * down anyway. If the caller still cares, it can use a custom {@link Executor} to catch the
+     * {@link RuntimeException}.
      *
      * @param intervalSec The target interval in seconds between keepalive packet transmissions.
      *                    The interval should be between 10 seconds and 3600 seconds, otherwise
@@ -308,11 +333,35 @@
      */
     public final void start(@IntRange(from = MIN_INTERVAL_SEC, to = MAX_INTERVAL_SEC)
             int intervalSec) {
-        startImpl(intervalSec);
+        startImpl(intervalSec, 0 /* flags */);
+    }
+
+    /**
+     * Request that keepalive be started with the given {@code intervalSec}.
+     *
+     * See {@link SocketKeepalive}. If the remote binder dies, or the binder call throws an
+     * exception when invoking start or stop of the {@link SocketKeepalive}, a
+     * {@link RuntimeException} caused by a {@link RemoteException} will be thrown into the
+     * {@link Executor}. This is typically not important to catch because the remote party is
+     * the system, so if it is not in shape to communicate through binder the system is going
+     * down anyway. If the caller still cares, it can use a custom {@link Executor} to catch the
+     * {@link RuntimeException}.
+     *
+     * @param intervalSec The target interval in seconds between keepalive packet transmissions.
+     *                    The interval should be between 10 seconds and 3600 seconds. Otherwise,
+     *                    the supplied {@link Callback} will see a call to
+     *                    {@link Callback#onError(int)} with {@link #ERROR_INVALID_INTERVAL}.
+     * @param flags Flags to enable/disable available options on this keepalive.
+     * @hide
+     */
+    @SystemApi(client = PRIVILEGED_APPS)
+    public final void start(@IntRange(from = MIN_INTERVAL_SEC, to = MAX_INTERVAL_SEC)
+            int intervalSec, @StartFlags int flags) {
+        startImpl(intervalSec, flags);
     }
 
     /** @hide */
-    protected abstract void startImpl(int intervalSec);
+    protected abstract void startImpl(int intervalSec, @StartFlags int flags);
 
     /**
      * Requests that keepalive be stopped. The application must wait for {@link Callback#onStopped}
diff --git a/framework/src/android/net/TcpSocketKeepalive.java b/framework/src/android/net/TcpSocketKeepalive.java
index 7131784..51d805e 100644
--- a/framework/src/android/net/TcpSocketKeepalive.java
+++ b/framework/src/android/net/TcpSocketKeepalive.java
@@ -50,7 +50,11 @@
      *   acknowledgement.
      */
     @Override
-    protected void startImpl(int intervalSec) {
+    protected void startImpl(int intervalSec, int flags) {
+        if (0 != flags) {
+            throw new IllegalArgumentException("Illegal flag value for "
+                    + this.getClass().getSimpleName() + " : " + flags);
+        }
         mExecutor.execute(() -> {
             try {
                 mService.startTcpKeepalive(mNetwork, mPfd, intervalSec, mCallback);
diff --git a/service-t/Android.bp b/service-t/Android.bp
index d876166..5bf2973 100644
--- a/service-t/Android.bp
+++ b/service-t/Android.bp
@@ -52,6 +52,7 @@
         "framework-connectivity-t-pre-jarjar",
         // TODO: use framework-tethering-pre-jarjar when it is separated from framework-tethering
         "framework-tethering.impl",
+        "framework-wifi",
         "service-connectivity-pre-jarjar",
         "service-nearby-pre-jarjar",
         "ServiceConnectivityResources",
diff --git a/service-t/src/com/android/server/NsdService.java b/service-t/src/com/android/server/NsdService.java
index 1226eea..b361720 100644
--- a/service-t/src/com/android/server/NsdService.java
+++ b/service-t/src/com/android/server/NsdService.java
@@ -17,12 +17,17 @@
 package com.android.server;
 
 import static android.net.ConnectivityManager.NETID_UNSET;
+import static android.net.nsd.NsdManager.MDNS_DISCOVERY_MANAGER_EVENT;
 import static android.net.nsd.NsdManager.MDNS_SERVICE_EVENT;
+import static android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.content.Context;
 import android.content.Intent;
 import android.net.ConnectivityManager;
 import android.net.INetd;
+import android.net.InetAddresses;
 import android.net.LinkProperties;
 import android.net.Network;
 import android.net.mdns.aidl.DiscoveryInfo;
@@ -39,9 +44,11 @@
 import android.os.Handler;
 import android.os.HandlerThread;
 import android.os.IBinder;
+import android.os.Looper;
 import android.os.Message;
 import android.os.RemoteException;
 import android.os.UserHandle;
+import android.text.TextUtils;
 import android.util.Log;
 import android.util.Pair;
 import android.util.SparseArray;
@@ -50,7 +57,17 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.State;
 import com.android.internal.util.StateMachine;
+import com.android.net.module.util.DeviceConfigUtils;
 import com.android.net.module.util.PermissionUtils;
+import com.android.server.connectivity.mdns.ExecutorProvider;
+import com.android.server.connectivity.mdns.MdnsAdvertiser;
+import com.android.server.connectivity.mdns.MdnsDiscoveryManager;
+import com.android.server.connectivity.mdns.MdnsMultinetworkSocketClient;
+import com.android.server.connectivity.mdns.MdnsSearchOptions;
+import com.android.server.connectivity.mdns.MdnsServiceBrowserListener;
+import com.android.server.connectivity.mdns.MdnsServiceInfo;
+import com.android.server.connectivity.mdns.MdnsSocketClientBase;
+import com.android.server.connectivity.mdns.MdnsSocketProvider;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
@@ -58,7 +75,17 @@
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.net.UnknownHostException;
+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.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Network Service Discovery Service handles remote service discovery operation requests by
@@ -69,8 +96,22 @@
 public class NsdService extends INsdManager.Stub {
     private static final String TAG = "NsdService";
     private static final String MDNS_TAG = "mDnsConnector";
+    /**
+     * Enable discovery using the Java DiscoveryManager, instead of the legacy mdnsresponder
+     * implementation.
+     */
+    private static final String MDNS_DISCOVERY_MANAGER_VERSION = "mdns_discovery_manager_version";
+    private static final String LOCAL_DOMAIN_NAME = "local";
+    // Max label length as per RFC 1034/1035
+    private static final int MAX_LABEL_LENGTH = 63;
 
-    private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+    /**
+     * Enable advertising using the Java MdnsAdvertiser, instead of the legacy mdnsresponder
+     * implementation.
+     */
+    private static final String MDNS_ADVERTISER_VERSION = "mdns_advertiser_version";
+
+    public static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
     private static final long CLEANUP_DELAY_MS = 10000;
     private static final int IFACE_IDX_ANY = 0;
 
@@ -78,10 +119,19 @@
     private final NsdStateMachine mNsdStateMachine;
     private final MDnsManager mMDnsManager;
     private final MDnsEventCallback mMDnsEventCallback;
-    // WARNING : Accessing this value in any thread is not safe, it must only be changed in the
+    @Nullable
+    private final MdnsMultinetworkSocketClient mMdnsSocketClient;
+    @Nullable
+    private final MdnsDiscoveryManager mMdnsDiscoveryManager;
+    @Nullable
+    private final MdnsSocketProvider mMdnsSocketProvider;
+    @Nullable
+    private final MdnsAdvertiser mAdvertiser;
+    // WARNING : Accessing these values in any thread is not safe, it must only be changed in the
     // state machine thread. If change this outside state machine, it will need to introduce
     // synchronization.
     private boolean mIsDaemonStarted = false;
+    private boolean mIsMonitoringSocketsStarted = false;
 
     /**
      * Clients receiving asynchronous messages
@@ -98,6 +148,110 @@
     // The count of the connected legacy clients.
     private int mLegacyClientCount = 0;
 
+    private static class MdnsListener implements MdnsServiceBrowserListener {
+        protected final int mClientId;
+        protected final int mTransactionId;
+        @NonNull
+        protected final NsdServiceInfo mReqServiceInfo;
+        @NonNull
+        protected final String mListenedServiceType;
+
+        MdnsListener(int clientId, int transactionId, @NonNull NsdServiceInfo reqServiceInfo,
+                @NonNull String listenedServiceType) {
+            mClientId = clientId;
+            mTransactionId = transactionId;
+            mReqServiceInfo = reqServiceInfo;
+            mListenedServiceType = listenedServiceType;
+        }
+
+        @NonNull
+        public String getListenedServiceType() {
+            return mListenedServiceType;
+        }
+
+        @Override
+        public void onServiceFound(@NonNull MdnsServiceInfo serviceInfo) { }
+
+        @Override
+        public void onServiceUpdated(@NonNull MdnsServiceInfo serviceInfo) { }
+
+        @Override
+        public void onServiceRemoved(@NonNull MdnsServiceInfo serviceInfo) { }
+
+        @Override
+        public void onServiceNameDiscovered(@NonNull MdnsServiceInfo serviceInfo) { }
+
+        @Override
+        public void onServiceNameRemoved(@NonNull MdnsServiceInfo serviceInfo) { }
+
+        @Override
+        public void onSearchStoppedWithError(int error) { }
+
+        @Override
+        public void onSearchFailedToStart() { }
+
+        @Override
+        public void onDiscoveryQuerySent(@NonNull List<String> subtypes, int transactionId) { }
+
+        @Override
+        public void onFailedToParseMdnsResponse(int receivedPacketNumber, int errorCode) { }
+    }
+
+    private class DiscoveryListener extends MdnsListener {
+
+        DiscoveryListener(int clientId, int transactionId, @NonNull NsdServiceInfo reqServiceInfo,
+                @NonNull String listenServiceType) {
+            super(clientId, transactionId, reqServiceInfo, listenServiceType);
+        }
+
+        @Override
+        public void onServiceNameDiscovered(@NonNull MdnsServiceInfo serviceInfo) {
+            mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
+                    NsdManager.SERVICE_FOUND,
+                    new MdnsEvent(mClientId, mReqServiceInfo.getServiceType(), serviceInfo));
+        }
+
+        @Override
+        public void onServiceNameRemoved(@NonNull MdnsServiceInfo serviceInfo) {
+            mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
+                    NsdManager.SERVICE_LOST,
+                    new MdnsEvent(mClientId, mReqServiceInfo.getServiceType(), serviceInfo));
+        }
+    }
+
+    private class ResolutionListener extends MdnsListener {
+
+        ResolutionListener(int clientId, int transactionId, @NonNull NsdServiceInfo reqServiceInfo,
+                @NonNull String listenServiceType) {
+            super(clientId, transactionId, reqServiceInfo, listenServiceType);
+        }
+
+        @Override
+        public void onServiceFound(MdnsServiceInfo serviceInfo) {
+            mNsdStateMachine.sendMessage(MDNS_DISCOVERY_MANAGER_EVENT, mTransactionId,
+                    NsdManager.RESOLVE_SERVICE_SUCCEEDED,
+                    new MdnsEvent(mClientId, mReqServiceInfo.getServiceType(), serviceInfo));
+        }
+    }
+
+    /**
+     * Data class of mdns service callback information.
+     */
+    private static class MdnsEvent {
+        final int mClientId;
+        @NonNull
+        final String mRequestedServiceType;
+        @NonNull
+        final MdnsServiceInfo mMdnsServiceInfo;
+
+        MdnsEvent(int clientId, @NonNull String requestedServiceType,
+                @NonNull MdnsServiceInfo mdnsServiceInfo) {
+            mClientId = clientId;
+            mRequestedServiceType = requestedServiceType;
+            mMdnsServiceInfo = mdnsServiceInfo;
+        }
+    }
+
     private class NsdStateMachine extends StateMachine {
 
         private final DefaultState mDefaultState = new DefaultState();
@@ -148,6 +302,31 @@
             this.removeMessages(NsdManager.DAEMON_CLEANUP);
         }
 
+        private void maybeStartMonitoringSockets() {
+            if (mIsMonitoringSocketsStarted) {
+                if (DBG) Log.d(TAG, "Socket monitoring is already started.");
+                return;
+            }
+
+            mMdnsSocketProvider.startMonitoringSockets();
+            mIsMonitoringSocketsStarted = true;
+        }
+
+        private void maybeStopMonitoringSockets() {
+            if (!mIsMonitoringSocketsStarted) {
+                if (DBG) Log.d(TAG, "Socket monitoring has not been started.");
+                return;
+            }
+            mMdnsSocketProvider.stopMonitoringSockets();
+            mIsMonitoringSocketsStarted = false;
+        }
+
+        private void maybeStopMonitoringSocketsIfNoActiveRequest() {
+            if (!isAnyRequestActive()) {
+                maybeStopMonitoringSockets();
+            }
+        }
+
         NsdStateMachine(String name, Handler handler) {
             super(name, handler);
             addState(mDefaultState);
@@ -179,11 +358,17 @@
                         final NsdServiceConnector connector = (NsdServiceConnector) msg.obj;
                         cInfo = mClients.remove(connector);
                         if (cInfo != null) {
+                            if (mMdnsDiscoveryManager != null) {
+                                cInfo.unregisterAllListeners();
+                            }
                             cInfo.expungeAllRequests();
                             if (cInfo.isLegacy()) {
                                 mLegacyClientCount -= 1;
                             }
                         }
+                        if (mMdnsDiscoveryManager != null || mAdvertiser != null) {
+                            maybeStopMonitoringSocketsIfNoActiveRequest();
+                        }
                         maybeScheduleStop();
                         break;
                     case NsdManager.DISCOVER_SERVICES:
@@ -221,6 +406,20 @@
                                     clientId, NsdManager.FAILURE_INTERNAL_ERROR);
                         }
                         break;
+                    case NsdManager.STOP_RESOLUTION:
+                        cInfo = getClientInfoForReply(msg);
+                        if (cInfo != null) {
+                            cInfo.onStopResolutionFailed(
+                                    clientId, NsdManager.FAILURE_OPERATION_NOT_RUNNING);
+                        }
+                        break;
+                    case NsdManager.REGISTER_SERVICE_CALLBACK:
+                        cInfo = getClientInfoForReply(msg);
+                        if (cInfo != null) {
+                            cInfo.onServiceInfoCallbackRegistrationFailed(
+                                    clientId, NsdManager.FAILURE_BAD_PARAMETERS);
+                        }
+                        break;
                     case NsdManager.DAEMON_CLEANUP:
                         maybeStopDaemon();
                         break;
@@ -282,6 +481,75 @@
                 clientInfo.mClientRequests.delete(clientId);
                 mIdToClientInfoMap.remove(globalId);
                 maybeScheduleStop();
+                maybeStopMonitoringSocketsIfNoActiveRequest();
+            }
+
+            private void storeListenerMap(int clientId, int transactionId, MdnsListener listener,
+                    ClientInfo clientInfo) {
+                clientInfo.mClientIds.put(clientId, transactionId);
+                clientInfo.mListeners.put(clientId, listener);
+                mIdToClientInfoMap.put(transactionId, clientInfo);
+            }
+
+            private void removeListenerMap(int clientId, int transactionId, ClientInfo clientInfo) {
+                clientInfo.mClientIds.delete(clientId);
+                clientInfo.mListeners.delete(clientId);
+                mIdToClientInfoMap.remove(transactionId);
+                maybeStopMonitoringSocketsIfNoActiveRequest();
+            }
+
+            private void clearRegisteredServiceInfo(ClientInfo clientInfo) {
+                clientInfo.mRegisteredService = null;
+                clientInfo.mClientIdForServiceUpdates = 0;
+            }
+
+            /**
+             * Check the given service type is valid and construct it to a service type
+             * which can use for discovery / resolution service.
+             *
+             * <p> The valid service type should be 2 labels, or 3 labels if the query is for a
+             * subtype (see RFC6763 7.1). Each label is up to 63 characters and must start with an
+             * underscore; they are alphanumerical characters or dashes or underscore, except the
+             * last one that is just alphanumerical. The last label must be _tcp or _udp.
+             *
+             * @param serviceType the request service type for discovery / resolution service
+             * @return constructed service type or null if the given service type is invalid.
+             */
+            @Nullable
+            private String constructServiceType(String serviceType) {
+                if (TextUtils.isEmpty(serviceType)) return null;
+
+                final Pattern serviceTypePattern = Pattern.compile(
+                        "^(_[a-zA-Z0-9-_]{1,61}[a-zA-Z0-9]\\.)?"
+                                + "(_[a-zA-Z0-9-_]{1,61}[a-zA-Z0-9]\\._(?:tcp|udp))$");
+                final Matcher matcher = serviceTypePattern.matcher(serviceType);
+                if (!matcher.matches()) return null;
+                return matcher.group(1) == null
+                        ? serviceType
+                        : matcher.group(1) + "_sub." + matcher.group(2);
+            }
+
+            /**
+             * Truncate a service name to up to 63 UTF-8 bytes.
+             *
+             * See RFC6763 4.1.1: service instance names are UTF-8 and up to 63 bytes. Truncating
+             * names used in registerService follows historical behavior (see mdnsresponder
+             * handle_regservice_request).
+             */
+            @NonNull
+            private String truncateServiceName(@NonNull String originalName) {
+                // UTF-8 is at most 4 bytes per character; return early in the common case where
+                // the name can't possibly be over the limit given its string length.
+                if (originalName.length() <= MAX_LABEL_LENGTH / 4) return originalName;
+
+                final Charset utf8 = StandardCharsets.UTF_8;
+                final CharsetEncoder encoder = utf8.newEncoder();
+                final ByteBuffer out = ByteBuffer.allocate(MAX_LABEL_LENGTH);
+                // encode will write as many characters as possible to the out buffer, and just
+                // return an overflow code if there were too many characters (no need to check the
+                // return code here, this method truncates the name on purpose).
+                encoder.encode(CharBuffer.wrap(originalName), out, true /* endOfInput */);
+                return new String(out.array(), 0, out.position(), utf8);
             }
 
             @Override
@@ -291,7 +559,7 @@
                 final int clientId = msg.arg2;
                 final ListenerArgs args;
                 switch (msg.what) {
-                    case NsdManager.DISCOVER_SERVICES:
+                    case NsdManager.DISCOVER_SERVICES: {
                         if (DBG) Log.d(TAG, "Discover services");
                         args = (ListenerArgs) msg.obj;
                         clientInfo = mClients.get(args.connector);
@@ -309,21 +577,45 @@
                             break;
                         }
 
-                        maybeStartDaemon();
+                        final NsdServiceInfo info = args.serviceInfo;
                         id = getUniqueId();
-                        if (discoverServices(id, args.serviceInfo)) {
-                            if (DBG) {
-                                Log.d(TAG, "Discover " + msg.arg2 + " " + id
-                                        + args.serviceInfo.getServiceType());
+                        if (mMdnsDiscoveryManager != null) {
+                            final String serviceType = constructServiceType(info.getServiceType());
+                            if (serviceType == null) {
+                                clientInfo.onDiscoverServicesFailed(clientId,
+                                        NsdManager.FAILURE_INTERNAL_ERROR);
+                                break;
                             }
-                            storeRequestMap(clientId, id, clientInfo, msg.what);
-                            clientInfo.onDiscoverServicesStarted(clientId, args.serviceInfo);
+
+                            final String listenServiceType = serviceType + ".local";
+                            maybeStartMonitoringSockets();
+                            final MdnsListener listener =
+                                    new DiscoveryListener(clientId, id, info, listenServiceType);
+                            final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
+                                    .setNetwork(info.getNetwork())
+                                    .setIsPassiveMode(true)
+                                    .build();
+                            mMdnsDiscoveryManager.registerListener(
+                                    listenServiceType, listener, options);
+                            storeListenerMap(clientId, id, listener, clientInfo);
+                            clientInfo.onDiscoverServicesStarted(clientId, info);
                         } else {
-                            stopServiceDiscovery(id);
-                            clientInfo.onDiscoverServicesFailed(clientId,
-                                    NsdManager.FAILURE_INTERNAL_ERROR);
+                            maybeStartDaemon();
+                            if (discoverServices(id, info)) {
+                                if (DBG) {
+                                    Log.d(TAG, "Discover " + msg.arg2 + " " + id
+                                            + info.getServiceType());
+                                }
+                                storeRequestMap(clientId, id, clientInfo, msg.what);
+                                clientInfo.onDiscoverServicesStarted(clientId, info);
+                            } else {
+                                stopServiceDiscovery(id);
+                                clientInfo.onDiscoverServicesFailed(clientId,
+                                        NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
                         }
                         break;
+                    }
                     case NsdManager.STOP_DISCOVERY:
                         if (DBG) Log.d(TAG, "Stop service discovery");
                         args = (ListenerArgs) msg.obj;
@@ -343,12 +635,25 @@
                                     clientId, NsdManager.FAILURE_INTERNAL_ERROR);
                             break;
                         }
-                        removeRequestMap(clientId, id, clientInfo);
-                        if (stopServiceDiscovery(id)) {
+                        if (mMdnsDiscoveryManager != null) {
+                            final MdnsListener listener = clientInfo.mListeners.get(clientId);
+                            if (listener == null) {
+                                clientInfo.onStopDiscoveryFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                                break;
+                            }
+                            mMdnsDiscoveryManager.unregisterListener(
+                                    listener.getListenedServiceType(), listener);
+                            removeListenerMap(clientId, id, clientInfo);
                             clientInfo.onStopDiscoverySucceeded(clientId);
                         } else {
-                            clientInfo.onStopDiscoveryFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            removeRequestMap(clientId, id, clientInfo);
+                            if (stopServiceDiscovery(id)) {
+                                clientInfo.onStopDiscoverySucceeded(clientId);
+                            } else {
+                                clientInfo.onStopDiscoveryFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
                         }
                         break;
                     case NsdManager.REGISTER_SERVICE:
@@ -369,16 +674,36 @@
                             break;
                         }
 
-                        maybeStartDaemon();
                         id = getUniqueId();
-                        if (registerService(id, args.serviceInfo)) {
-                            if (DBG) Log.d(TAG, "Register " + clientId + " " + id);
+                        if (mAdvertiser != null) {
+                            final NsdServiceInfo serviceInfo = args.serviceInfo;
+                            final String serviceType = serviceInfo.getServiceType();
+                            final String registerServiceType = constructServiceType(serviceType);
+                            if (registerServiceType == null) {
+                                Log.e(TAG, "Invalid service type: " + serviceType);
+                                clientInfo.onRegisterServiceFailed(clientId,
+                                        NsdManager.FAILURE_INTERNAL_ERROR);
+                                break;
+                            }
+                            serviceInfo.setServiceType(registerServiceType);
+                            serviceInfo.setServiceName(truncateServiceName(
+                                    serviceInfo.getServiceName()));
+
+                            maybeStartMonitoringSockets();
+                            mAdvertiser.addService(id, serviceInfo);
                             storeRequestMap(clientId, id, clientInfo, msg.what);
-                            // Return success after mDns reports success
                         } else {
-                            unregisterService(id);
-                            clientInfo.onRegisterServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            maybeStartDaemon();
+                            if (registerService(id, args.serviceInfo)) {
+                                if (DBG) Log.d(TAG, "Register " + clientId + " " + id);
+                                storeRequestMap(clientId, id, clientInfo, msg.what);
+                                // Return success after mDns reports success
+                            } else {
+                                unregisterService(id);
+                                clientInfo.onRegisterServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
+
                         }
                         break;
                     case NsdManager.UNREGISTER_SERVICE:
@@ -394,14 +719,20 @@
                         }
                         id = clientInfo.mClientIds.get(clientId);
                         removeRequestMap(clientId, id, clientInfo);
-                        if (unregisterService(id)) {
+
+                        if (mAdvertiser != null) {
+                            mAdvertiser.removeService(id);
                             clientInfo.onUnregisterServiceSucceeded(clientId);
                         } else {
-                            clientInfo.onUnregisterServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            if (unregisterService(id)) {
+                                clientInfo.onUnregisterServiceSucceeded(clientId);
+                            } else {
+                                clientInfo.onUnregisterServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
                         }
                         break;
-                    case NsdManager.RESOLVE_SERVICE:
+                    case NsdManager.RESOLVE_SERVICE: {
                         if (DBG) Log.d(TAG, "Resolve service");
                         args = (ListenerArgs) msg.obj;
                         clientInfo = mClients.get(args.connector);
@@ -413,8 +744,82 @@
                             break;
                         }
 
-                        if (clientInfo.mResolvedService != null) {
-                            clientInfo.onResolveServiceFailed(
+                        final NsdServiceInfo info = args.serviceInfo;
+                        id = getUniqueId();
+                        if (mMdnsDiscoveryManager != null) {
+                            final String serviceType = constructServiceType(info.getServiceType());
+                            if (serviceType == null) {
+                                clientInfo.onResolveServiceFailed(clientId,
+                                        NsdManager.FAILURE_INTERNAL_ERROR);
+                                break;
+                            }
+                            final String resolveServiceType = serviceType + ".local";
+
+                            maybeStartMonitoringSockets();
+                            final MdnsListener listener =
+                                    new ResolutionListener(clientId, id, info, resolveServiceType);
+                            final MdnsSearchOptions options = MdnsSearchOptions.newBuilder()
+                                    .setNetwork(info.getNetwork())
+                                    .setIsPassiveMode(true)
+                                    .build();
+                            mMdnsDiscoveryManager.registerListener(
+                                    resolveServiceType, listener, options);
+                            storeListenerMap(clientId, id, listener, clientInfo);
+                        } else {
+                            if (clientInfo.mResolvedService != null) {
+                                clientInfo.onResolveServiceFailed(
+                                        clientId, NsdManager.FAILURE_ALREADY_ACTIVE);
+                                break;
+                            }
+
+                            maybeStartDaemon();
+                            if (resolveService(id, args.serviceInfo)) {
+                                clientInfo.mResolvedService = new NsdServiceInfo();
+                                storeRequestMap(clientId, id, clientInfo, msg.what);
+                            } else {
+                                clientInfo.onResolveServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
+                        }
+                        break;
+                    }
+                    case NsdManager.STOP_RESOLUTION:
+                        if (DBG) Log.d(TAG, "Stop service resolution");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in stop resolution");
+                            break;
+                        }
+
+                        id = clientInfo.mClientIds.get(clientId);
+                        removeRequestMap(clientId, id, clientInfo);
+                        if (stopResolveService(id)) {
+                            clientInfo.onStopResolutionSucceeded(clientId);
+                        } else {
+                            clientInfo.onStopResolutionFailed(
+                                    clientId, NsdManager.FAILURE_OPERATION_NOT_RUNNING);
+                        }
+                        clientInfo.mResolvedService = null;
+                        // TODO: Implement the stop resolution with MdnsDiscoveryManager.
+                        break;
+                    case NsdManager.REGISTER_SERVICE_CALLBACK:
+                        if (DBG) Log.d(TAG, "Register a service callback");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in callback registration");
+                            break;
+                        }
+
+                        if (clientInfo.mRegisteredService != null) {
+                            clientInfo.onServiceInfoCallbackRegistrationFailed(
                                     clientId, NsdManager.FAILURE_ALREADY_ACTIVE);
                             break;
                         }
@@ -422,24 +827,64 @@
                         maybeStartDaemon();
                         id = getUniqueId();
                         if (resolveService(id, args.serviceInfo)) {
-                            clientInfo.mResolvedService = new NsdServiceInfo();
+                            clientInfo.mRegisteredService = new NsdServiceInfo();
+                            clientInfo.mClientIdForServiceUpdates = clientId;
                             storeRequestMap(clientId, id, clientInfo, msg.what);
                         } else {
-                            clientInfo.onResolveServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            clientInfo.onServiceInfoCallbackRegistrationFailed(
+                                    clientId, NsdManager.FAILURE_BAD_PARAMETERS);
                         }
                         break;
+                    case NsdManager.UNREGISTER_SERVICE_CALLBACK:
+                        if (DBG) Log.d(TAG, "Unregister a service callback");
+                        args = (ListenerArgs) msg.obj;
+                        clientInfo = mClients.get(args.connector);
+                        // If the binder death notification for a INsdManagerCallback was received
+                        // before any calls are received by NsdService, the clientInfo would be
+                        // cleared and cause NPE. Add a null check here to prevent this corner case.
+                        if (clientInfo == null) {
+                            Log.e(TAG, "Unknown connector in callback unregistration");
+                            break;
+                        }
+
+                        id = clientInfo.mClientIds.get(clientId);
+                        removeRequestMap(clientId, id, clientInfo);
+                        if (stopResolveService(id)) {
+                            clientInfo.onServiceInfoCallbackUnregistered(clientId);
+                        } else {
+                            Log.e(TAG, "Failed to unregister service info callback");
+                        }
+                        clearRegisteredServiceInfo(clientInfo);
+                        break;
                     case MDNS_SERVICE_EVENT:
                         if (!handleMDnsServiceEvent(msg.arg1, msg.arg2, msg.obj)) {
                             return NOT_HANDLED;
                         }
                         break;
+                    case MDNS_DISCOVERY_MANAGER_EVENT:
+                        if (!handleMdnsDiscoveryManagerEvent(msg.arg1, msg.arg2, msg.obj)) {
+                            return NOT_HANDLED;
+                        }
+                        break;
                     default:
                         return NOT_HANDLED;
                 }
                 return HANDLED;
             }
 
+            private void notifyResolveFailedResult(boolean isListenedToUpdates, int clientId,
+                    ClientInfo clientInfo, int error) {
+                if (isListenedToUpdates) {
+                    clientInfo.onServiceInfoCallbackRegistrationFailed(clientId, error);
+                    clearRegisteredServiceInfo(clientInfo);
+                } else {
+                    // The resolve API always returned FAILURE_INTERNAL_ERROR on error; keep it
+                    // for backwards compatibility.
+                    clientInfo.onResolveServiceFailed(clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                    clientInfo.mResolvedService = null;
+                }
+            }
+
             private boolean handleMDnsServiceEvent(int code, int id, Object obj) {
                 NsdServiceInfo servInfo;
                 ClientInfo clientInfo = mIdToClientInfoMap.get(id);
@@ -490,6 +935,8 @@
                         // found services on the same interface index and their network at the time
                         setServiceNetworkForCallback(servInfo, lostNetId, info.interfaceIdx);
                         clientInfo.onServiceLost(clientId, servInfo);
+                        // TODO: also support registered service lost when not discovering
+                        clientInfo.maybeNotifyRegisteredServiceLost(servInfo);
                         break;
                     }
                     case IMDnsEventListener.SERVICE_DISCOVERY_FAILED:
@@ -526,10 +973,15 @@
                         String rest = fullName.substring(index);
                         String type = rest.replace(".local.", "");
 
-                        clientInfo.mResolvedService.setServiceName(name);
-                        clientInfo.mResolvedService.setServiceType(type);
-                        clientInfo.mResolvedService.setPort(info.port);
-                        clientInfo.mResolvedService.setTxtRecords(info.txtRecord);
+                        final boolean isListenedToUpdates =
+                                clientId == clientInfo.mClientIdForServiceUpdates;
+                        final NsdServiceInfo serviceInfo = isListenedToUpdates
+                                ? clientInfo.mRegisteredService : clientInfo.mResolvedService;
+
+                        serviceInfo.setServiceName(name);
+                        serviceInfo.setServiceType(type);
+                        serviceInfo.setPort(info.port);
+                        serviceInfo.setTxtRecords(info.txtRecord);
                         // Network will be added after SERVICE_GET_ADDR_SUCCESS
 
                         stopResolveService(id);
@@ -539,9 +991,8 @@
                         if (getAddrInfo(id2, info.hostname, info.interfaceIdx)) {
                             storeRequestMap(clientId, id2, clientInfo, NsdManager.RESOLVE_SERVICE);
                         } else {
-                            clientInfo.onResolveServiceFailed(
-                                    clientId, NsdManager.FAILURE_INTERNAL_ERROR);
-                            clientInfo.mResolvedService = null;
+                            notifyResolveFailedResult(isListenedToUpdates, clientId, clientInfo,
+                                    NsdManager.FAILURE_BAD_PARAMETERS);
                         }
                         break;
                     }
@@ -549,17 +1000,17 @@
                         /* NNN resolveId errorCode */
                         stopResolveService(id);
                         removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
-                        clientInfo.onResolveServiceFailed(
-                                clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                        notifyResolveFailedResult(
+                                clientId == clientInfo.mClientIdForServiceUpdates,
+                                clientId, clientInfo, NsdManager.FAILURE_BAD_PARAMETERS);
                         break;
                     case IMDnsEventListener.SERVICE_GET_ADDR_FAILED:
                         /* NNN resolveId errorCode */
                         stopGetAddrInfo(id);
                         removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
-                        clientInfo.onResolveServiceFailed(
-                                clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                        notifyResolveFailedResult(
+                                clientId == clientInfo.mClientIdForServiceUpdates,
+                                clientId, clientInfo, NsdManager.FAILURE_BAD_PARAMETERS);
                         break;
                     case IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS: {
                         /* NNN resolveId hostname ttl addr interfaceIdx netId */
@@ -576,19 +1027,117 @@
                         // If the resolved service is on an interface without a network, consider it
                         // as a failure: it would not be usable by apps as they would need
                         // privileged permissions.
-                        if (netId != NETID_UNSET && serviceHost != null) {
-                            clientInfo.mResolvedService.setHost(serviceHost);
-                            setServiceNetworkForCallback(clientInfo.mResolvedService,
-                                    netId, info.interfaceIdx);
-                            clientInfo.onResolveServiceSucceeded(
-                                    clientId, clientInfo.mResolvedService);
+                        if (clientId == clientInfo.mClientIdForServiceUpdates) {
+                            if (netId != NETID_UNSET && serviceHost != null) {
+                                setServiceNetworkForCallback(clientInfo.mRegisteredService,
+                                        netId, info.interfaceIdx);
+                                final List<InetAddress> addresses =
+                                        clientInfo.mRegisteredService.getHostAddresses();
+                                addresses.add(serviceHost);
+                                clientInfo.mRegisteredService.setHostAddresses(addresses);
+                                clientInfo.onServiceUpdated(
+                                        clientId, clientInfo.mRegisteredService);
+                            } else {
+                                stopGetAddrInfo(id);
+                                removeRequestMap(clientId, id, clientInfo);
+                                clearRegisteredServiceInfo(clientInfo);
+                                clientInfo.onServiceInfoCallbackRegistrationFailed(
+                                        clientId, NsdManager.FAILURE_BAD_PARAMETERS);
+                            }
                         } else {
+                            if (netId != NETID_UNSET && serviceHost != null) {
+                                clientInfo.mResolvedService.setHost(serviceHost);
+                                setServiceNetworkForCallback(clientInfo.mResolvedService,
+                                        netId, info.interfaceIdx);
+                                clientInfo.onResolveServiceSucceeded(
+                                        clientId, clientInfo.mResolvedService);
+                            } else {
+                                clientInfo.onResolveServiceFailed(
+                                        clientId, NsdManager.FAILURE_INTERNAL_ERROR);
+                            }
+                            stopGetAddrInfo(id);
+                            removeRequestMap(clientId, id, clientInfo);
+                            clientInfo.mResolvedService = null;
+                        }
+                        break;
+                    }
+                    default:
+                        return false;
+                }
+                return true;
+            }
+
+            private NsdServiceInfo buildNsdServiceInfoFromMdnsEvent(final MdnsEvent event) {
+                final MdnsServiceInfo serviceInfo = event.mMdnsServiceInfo;
+                final String serviceType = event.mRequestedServiceType;
+                final String serviceName = serviceInfo.getServiceInstanceName();
+                final NsdServiceInfo servInfo = new NsdServiceInfo(serviceName, serviceType);
+                final Network network = serviceInfo.getNetwork();
+                setServiceNetworkForCallback(
+                        servInfo,
+                        network == null ? NETID_UNSET : network.netId,
+                        serviceInfo.getInterfaceIndex());
+                return servInfo;
+            }
+
+            private boolean handleMdnsDiscoveryManagerEvent(
+                    int transactionId, int code, Object obj) {
+                final ClientInfo clientInfo = mIdToClientInfoMap.get(transactionId);
+                if (clientInfo == null) {
+                    Log.e(TAG, String.format(
+                            "id %d for %d has no client mapping", transactionId, code));
+                    return false;
+                }
+
+                final MdnsEvent event = (MdnsEvent) obj;
+                final int clientId = event.mClientId;
+                final NsdServiceInfo info = buildNsdServiceInfoFromMdnsEvent(event);
+                if (DBG) {
+                    Log.d(TAG, String.format("MdnsDiscoveryManager event code=%s transactionId=%d",
+                            NsdManager.nameOf(code), transactionId));
+                }
+                switch (code) {
+                    case NsdManager.SERVICE_FOUND:
+                        clientInfo.onServiceFound(clientId, info);
+                        break;
+                    case NsdManager.SERVICE_LOST:
+                        clientInfo.onServiceLost(clientId, info);
+                        break;
+                    case NsdManager.RESOLVE_SERVICE_SUCCEEDED: {
+                        final MdnsServiceInfo serviceInfo = event.mMdnsServiceInfo;
+                        // Add '.' in front of the service type that aligns with historical behavior
+                        info.setServiceType("." + event.mRequestedServiceType);
+                        info.setPort(serviceInfo.getPort());
+
+                        Map<String, String> attrs = serviceInfo.getAttributes();
+                        for (Map.Entry<String, String> kv : attrs.entrySet()) {
+                            final String key = kv.getKey();
+                            try {
+                                info.setAttribute(key, serviceInfo.getAttributeAsBytes(key));
+                            } catch (IllegalArgumentException e) {
+                                Log.e(TAG, "Invalid attribute", e);
+                            }
+                        }
+                        try {
+                            if (serviceInfo.getIpv4Address() != null) {
+                                info.setHost(InetAddresses.parseNumericAddress(
+                                        serviceInfo.getIpv4Address()));
+                            } else {
+                                info.setHost(InetAddresses.parseNumericAddress(
+                                        serviceInfo.getIpv6Address()));
+                            }
+                            clientInfo.onResolveServiceSucceeded(clientId, info);
+                        } catch (IllegalArgumentException e) {
+                            Log.wtf(TAG, "Invalid address in RESOLVE_SERVICE_SUCCEEDED", e);
                             clientInfo.onResolveServiceFailed(
                                     clientId, NsdManager.FAILURE_INTERNAL_ERROR);
                         }
-                        stopGetAddrInfo(id);
-                        removeRequestMap(clientId, id, clientInfo);
-                        clientInfo.mResolvedService = null;
+
+                        // Unregister the listener immediately like IMDnsEventListener design
+                        final MdnsListener listener = clientInfo.mListeners.get(clientId);
+                        mMdnsDiscoveryManager.unregisterListener(
+                                listener.getListenedServiceType(), listener);
+                        removeListenerMap(clientId, transactionId, clientInfo);
                         break;
                     }
                     default:
@@ -650,12 +1199,95 @@
 
     @VisibleForTesting
     NsdService(Context ctx, Handler handler, long cleanupDelayMs) {
+        this(ctx, handler, cleanupDelayMs, new Dependencies());
+    }
+
+    @VisibleForTesting
+    NsdService(Context ctx, Handler handler, long cleanupDelayMs, Dependencies deps) {
         mCleanupDelayMs = cleanupDelayMs;
         mContext = ctx;
         mNsdStateMachine = new NsdStateMachine(TAG, handler);
         mNsdStateMachine.start();
         mMDnsManager = ctx.getSystemService(MDnsManager.class);
         mMDnsEventCallback = new MDnsEventCallback(mNsdStateMachine);
+
+        final boolean discoveryManagerEnabled = deps.isMdnsDiscoveryManagerEnabled(ctx);
+        final boolean advertiserEnabled = deps.isMdnsAdvertiserEnabled(ctx);
+        if (discoveryManagerEnabled || advertiserEnabled) {
+            mMdnsSocketProvider = deps.makeMdnsSocketProvider(ctx, handler.getLooper());
+        } else {
+            mMdnsSocketProvider = null;
+        }
+
+        if (discoveryManagerEnabled) {
+            mMdnsSocketClient =
+                    new MdnsMultinetworkSocketClient(handler.getLooper(), mMdnsSocketProvider);
+            mMdnsDiscoveryManager =
+                    deps.makeMdnsDiscoveryManager(new ExecutorProvider(), mMdnsSocketClient);
+            handler.post(() -> mMdnsSocketClient.setCallback(mMdnsDiscoveryManager));
+        } else {
+            mMdnsSocketClient = null;
+            mMdnsDiscoveryManager = null;
+        }
+
+        if (advertiserEnabled) {
+            mAdvertiser = deps.makeMdnsAdvertiser(handler.getLooper(), mMdnsSocketProvider,
+                    new AdvertiserCallback());
+        } else {
+            mAdvertiser = null;
+        }
+    }
+
+    /**
+     * Dependencies of NsdService, for injection in tests.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /**
+         * Check whether the MdnsDiscoveryManager feature is enabled.
+         *
+         * @param context The global context information about an app environment.
+         * @return true if the MdnsDiscoveryManager feature is enabled.
+         */
+        public boolean isMdnsDiscoveryManagerEnabled(Context context) {
+            return DeviceConfigUtils.isFeatureEnabled(context, NAMESPACE_CONNECTIVITY,
+                    MDNS_DISCOVERY_MANAGER_VERSION, false /* defaultEnabled */);
+        }
+
+        /**
+         * Check whether the MdnsAdvertiser feature is enabled.
+         *
+         * @param context The global context information about an app environment.
+         * @return true if the MdnsAdvertiser feature is enabled.
+         */
+        public boolean isMdnsAdvertiserEnabled(Context context) {
+            return DeviceConfigUtils.isFeatureEnabled(context, NAMESPACE_CONNECTIVITY,
+                    MDNS_ADVERTISER_VERSION, false /* defaultEnabled */);
+        }
+
+        /**
+         * @see MdnsDiscoveryManager
+         */
+        public MdnsDiscoveryManager makeMdnsDiscoveryManager(
+                ExecutorProvider executorProvider, MdnsSocketClientBase socketClient) {
+            return new MdnsDiscoveryManager(executorProvider, socketClient);
+        }
+
+        /**
+         * @see MdnsAdvertiser
+         */
+        public MdnsAdvertiser makeMdnsAdvertiser(
+                @NonNull Looper looper, @NonNull MdnsSocketProvider socketProvider,
+                @NonNull MdnsAdvertiser.AdvertiserCallback cb) {
+            return new MdnsAdvertiser(looper, socketProvider, cb);
+        }
+
+        /**
+         * @see MdnsSocketProvider
+         */
+        public MdnsSocketProvider makeMdnsSocketProvider(Context context, Looper looper) {
+            return new MdnsSocketProvider(context, looper);
+        }
     }
 
     public static NsdService create(Context context) {
@@ -708,6 +1340,49 @@
         }
     }
 
+    private class AdvertiserCallback implements MdnsAdvertiser.AdvertiserCallback {
+        @Override
+        public void onRegisterServiceSucceeded(int serviceId, NsdServiceInfo registeredInfo) {
+            final ClientInfo clientInfo = getClientInfoOrLog(serviceId);
+            if (clientInfo == null) return;
+
+            final int clientId = getClientIdOrLog(clientInfo, serviceId);
+            if (clientId < 0) return;
+
+            // onRegisterServiceSucceeded only has the service name in its info. This aligns with
+            // historical behavior.
+            final NsdServiceInfo cbInfo = new NsdServiceInfo(registeredInfo.getServiceName(), null);
+            clientInfo.onRegisterServiceSucceeded(clientId, cbInfo);
+        }
+
+        @Override
+        public void onRegisterServiceFailed(int serviceId, int errorCode) {
+            final ClientInfo clientInfo = getClientInfoOrLog(serviceId);
+            if (clientInfo == null) return;
+
+            final int clientId = getClientIdOrLog(clientInfo, serviceId);
+            if (clientId < 0) return;
+
+            clientInfo.onRegisterServiceFailed(clientId, errorCode);
+        }
+
+        private ClientInfo getClientInfoOrLog(int serviceId) {
+            final ClientInfo clientInfo = mIdToClientInfoMap.get(serviceId);
+            if (clientInfo == null) {
+                Log.e(TAG, String.format("Callback for service %d has no client", serviceId));
+            }
+            return clientInfo;
+        }
+
+        private int getClientIdOrLog(@NonNull ClientInfo info, int serviceId) {
+            final int clientId = info.getClientId(serviceId);
+            if (clientId < 0) {
+                Log.e(TAG, String.format("Client ID not found for service %d", serviceId));
+            }
+            return clientId;
+        }
+    }
+
     @Override
     public INsdServiceConnector connect(INsdManagerCallback cb) {
         mContext.enforceCallingOrSelfPermission(android.Manifest.permission.INTERNET, "NsdService");
@@ -763,6 +1438,26 @@
         }
 
         @Override
+        public void stopResolution(int listenerKey) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.STOP_RESOLUTION, 0, listenerKey, new ListenerArgs(this, null)));
+        }
+
+        @Override
+        public void registerServiceInfoCallback(int listenerKey, NsdServiceInfo serviceInfo) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.REGISTER_SERVICE_CALLBACK, 0, listenerKey,
+                    new ListenerArgs(this, serviceInfo)));
+        }
+
+        @Override
+        public void unregisterServiceInfoCallback(int listenerKey) {
+            mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
+                    NsdManager.UNREGISTER_SERVICE_CALLBACK, 0, listenerKey,
+                    new ListenerArgs(this, null)));
+        }
+
+        @Override
         public void startDaemon() {
             mNsdStateMachine.sendMessage(mNsdStateMachine.obtainMessage(
                     NsdManager.DAEMON_STARTUP, new ListenerArgs(this, null)));
@@ -917,9 +1612,17 @@
         /* A map from client id to the type of the request we had received */
         private final SparseIntArray mClientRequests = new SparseIntArray();
 
+        /* A map from client id to the MdnsListener */
+        private final SparseArray<MdnsListener> mListeners = new SparseArray<>();
+
         // The target SDK of this client < Build.VERSION_CODES.S
         private boolean mIsLegacy = false;
 
+        /*** The service that is registered to listen to its updates */
+        private NsdServiceInfo mRegisteredService;
+        /*** The client id that listen to updates */
+        private int mClientIdForServiceUpdates;
+
         private ClientInfo(INsdManagerCallback cb) {
             mCb = cb;
             if (DBG) Log.d(TAG, "New client");
@@ -968,7 +1671,11 @@
                         stopResolveService(globalId);
                         break;
                     case NsdManager.REGISTER_SERVICE:
-                        unregisterService(globalId);
+                        if (mAdvertiser != null) {
+                            mAdvertiser.removeService(globalId);
+                        } else {
+                            unregisterService(globalId);
+                        }
                         break;
                     default:
                         break;
@@ -978,6 +1685,15 @@
             mClientRequests.clear();
         }
 
+        void unregisterAllListeners() {
+            for (int i = 0; i < mListeners.size(); i++) {
+                final MdnsListener listener = mListeners.valueAt(i);
+                mMdnsDiscoveryManager.unregisterListener(
+                        listener.getListenedServiceType(), listener);
+            }
+            mListeners.clear();
+        }
+
         // mClientIds is a sparse array of listener id -> mDnsClient id.  For a given mDnsClient id,
         // return the corresponding listener id.  mDnsClient id is also called a global id.
         private int getClientId(final int globalId) {
@@ -988,6 +1704,18 @@
             return mClientIds.keyAt(idx);
         }
 
+        private void maybeNotifyRegisteredServiceLost(@NonNull NsdServiceInfo info) {
+            if (mRegisteredService == null) return;
+            if (!Objects.equals(mRegisteredService.getServiceName(), info.getServiceName())) return;
+            // Resolved services have a leading dot appended at the beginning of their type, but in
+            // discovered info it's at the end
+            if (!Objects.equals(
+                    mRegisteredService.getServiceType() + ".", "." + info.getServiceType())) {
+                return;
+            }
+            onServiceUpdatedLost(mClientIdForServiceUpdates);
+        }
+
         void onDiscoverServicesStarted(int listenerKey, NsdServiceInfo info) {
             try {
                 mCb.onDiscoverServicesStarted(listenerKey, info);
@@ -1083,5 +1811,53 @@
                 Log.e(TAG, "Error calling onResolveServiceSucceeded", e);
             }
         }
+
+        void onStopResolutionFailed(int listenerKey, int error) {
+            try {
+                mCb.onStopResolutionFailed(listenerKey, error);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onStopResolutionFailed", e);
+            }
+        }
+
+        void onStopResolutionSucceeded(int listenerKey) {
+            try {
+                mCb.onStopResolutionSucceeded(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onStopResolutionSucceeded", e);
+            }
+        }
+
+        void onServiceInfoCallbackRegistrationFailed(int listenerKey, int error) {
+            try {
+                mCb.onServiceInfoCallbackRegistrationFailed(listenerKey, error);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceInfoCallbackRegistrationFailed", e);
+            }
+        }
+
+        void onServiceUpdated(int listenerKey, NsdServiceInfo info) {
+            try {
+                mCb.onServiceUpdated(listenerKey, info);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceUpdated", e);
+            }
+        }
+
+        void onServiceUpdatedLost(int listenerKey) {
+            try {
+                mCb.onServiceUpdatedLost(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceUpdatedLost", e);
+            }
+        }
+
+        void onServiceInfoCallbackUnregistered(int listenerKey) {
+            try {
+                mCb.onServiceInfoCallbackUnregistered(listenerKey);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error calling onServiceInfoCallbackUnregistered", e);
+            }
+        }
     }
 }
diff --git a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
index 0605abe..51683de 100644
--- a/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
+++ b/service-t/src/com/android/server/ethernet/EthernetNetworkFactory.java
@@ -491,10 +491,19 @@
             mDeps.makeIpClient(mContext, name, mIpClientCallback);
             mIpClientCallback.awaitIpClientStart();
 
+            if (mIpConfig.getProxySettings() == ProxySettings.STATIC
+                    || mIpConfig.getProxySettings() == ProxySettings.PAC) {
+                mIpClient.setHttpProxy(mIpConfig.getHttpProxy());
+            }
+
             if (sTcpBufferSizes == null) {
                 sTcpBufferSizes = mDeps.getTcpBufferSizesFromResource(mContext);
             }
-            provisionIpClient(mIpClient, mIpConfig, sTcpBufferSizes);
+            if (!TextUtils.isEmpty(sTcpBufferSizes)) {
+                mIpClient.setTcpBufferSizes(sTcpBufferSizes);
+            }
+
+            mIpClient.startProvisioning(createProvisioningConfiguration(mIpConfig));
         }
 
         void onIpLayerStarted(@NonNull final LinkProperties linkProperties) {
@@ -635,20 +644,6 @@
             mRequestIds.clear();
         }
 
-        private static void provisionIpClient(@NonNull final IpClientManager ipClient,
-                @NonNull final IpConfiguration config, @NonNull final String tcpBufferSizes) {
-            if (config.getProxySettings() == ProxySettings.STATIC ||
-                    config.getProxySettings() == ProxySettings.PAC) {
-                ipClient.setHttpProxy(config.getHttpProxy());
-            }
-
-            if (!TextUtils.isEmpty(tcpBufferSizes)) {
-                ipClient.setTcpBufferSizes(tcpBufferSizes);
-            }
-
-            ipClient.startProvisioning(createProvisioningConfiguration(config));
-        }
-
         private static ProvisioningConfiguration createProvisioningConfiguration(
                 @NonNull final IpConfiguration config) {
             if (config.getIpAssignment() == IpAssignment.STATIC) {
diff --git a/service/mdns/com/android/server/connectivity/mdns/ConnectivityMonitor.java b/service-t/src/com/android/server/mdns/ConnectivityMonitor.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/ConnectivityMonitor.java
rename to service-t/src/com/android/server/mdns/ConnectivityMonitor.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/ConnectivityMonitorWithConnectivityManager.java b/service-t/src/com/android/server/mdns/ConnectivityMonitorWithConnectivityManager.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/ConnectivityMonitorWithConnectivityManager.java
rename to service-t/src/com/android/server/mdns/ConnectivityMonitorWithConnectivityManager.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java b/service-t/src/com/android/server/mdns/EnqueueMdnsQueryCallable.java
similarity index 67%
rename from service/mdns/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
rename to service-t/src/com/android/server/mdns/EnqueueMdnsQueryCallable.java
index f7871f3..fdd1478 100644
--- a/service/mdns/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
+++ b/service-t/src/com/android/server/mdns/EnqueueMdnsQueryCallable.java
@@ -18,7 +18,9 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.net.Network;
 import android.text.TextUtils;
+import android.util.Log;
 import android.util.Pair;
 
 import com.android.server.connectivity.mdns.util.MdnsLogger;
@@ -58,26 +60,29 @@
         }
     }
 
-    private final WeakReference<MdnsSocketClient> weakRequestSender;
+    private final WeakReference<MdnsSocketClientBase> weakRequestSender;
     private final MdnsPacketWriter packetWriter;
     private final String[] serviceTypeLabels;
     private final List<String> subtypes;
     private final boolean expectUnicastResponse;
     private final int transactionId;
+    private final Network network;
 
     EnqueueMdnsQueryCallable(
-            @NonNull MdnsSocketClient requestSender,
+            @NonNull MdnsSocketClientBase requestSender,
             @NonNull MdnsPacketWriter packetWriter,
             @NonNull String serviceType,
             @NonNull Collection<String> subtypes,
             boolean expectUnicastResponse,
-            int transactionId) {
+            int transactionId,
+            @Nullable Network network) {
         weakRequestSender = new WeakReference<>(requestSender);
         this.packetWriter = packetWriter;
         serviceTypeLabels = TextUtils.split(serviceType, "\\.");
         this.subtypes = new ArrayList<>(subtypes);
         this.expectUnicastResponse = expectUnicastResponse;
         this.transactionId = transactionId;
+        this.network = network;
     }
 
     // Incompatible return type for override of Callable#call().
@@ -86,7 +91,7 @@
     @Nullable
     public Pair<Integer, List<String>> call() {
         try {
-            MdnsSocketClient requestSender = weakRequestSender.get();
+            MdnsSocketClientBase requestSender = weakRequestSender.get();
             if (requestSender == null) {
                 return null;
             }
@@ -127,15 +132,24 @@
                     MdnsConstants.QCLASS_INTERNET
                             | (expectUnicastResponse ? MdnsConstants.QCLASS_UNICAST : 0));
 
-            InetAddress mdnsAddress = MdnsConstants.getMdnsIPv4Address();
-            if (requestSender.isOnIPv6OnlyNetwork()) {
-                mdnsAddress = MdnsConstants.getMdnsIPv6Address();
-            }
+            if (requestSender instanceof MdnsMultinetworkSocketClient) {
+                sendPacketToIpv4AndIpv6(requestSender, MdnsConstants.MDNS_PORT, network);
+                for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
+                    sendPacketToIpv4AndIpv6(requestSender, emulatorPort, network);
+                }
+            } else if (requestSender instanceof MdnsSocketClient) {
+                final MdnsSocketClient client = (MdnsSocketClient) requestSender;
+                InetAddress mdnsAddress = MdnsConstants.getMdnsIPv4Address();
+                if (client.isOnIPv6OnlyNetwork()) {
+                    mdnsAddress = MdnsConstants.getMdnsIPv6Address();
+                }
 
-            sendPacketTo(requestSender,
-                    new InetSocketAddress(mdnsAddress, MdnsConstants.MDNS_PORT));
-            for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
-                sendPacketTo(requestSender, new InetSocketAddress(mdnsAddress, emulatorPort));
+                sendPacketTo(client, new InetSocketAddress(mdnsAddress, MdnsConstants.MDNS_PORT));
+                for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
+                    sendPacketTo(client, new InetSocketAddress(mdnsAddress, emulatorPort));
+                }
+            } else {
+                throw new IOException("Unknown socket client type: " + requestSender.getClass());
             }
             return Pair.create(transactionId, subtypes);
         } catch (IOException e) {
@@ -145,7 +159,7 @@
         }
     }
 
-    private void sendPacketTo(MdnsSocketClient requestSender, InetSocketAddress address)
+    private void sendPacketTo(MdnsSocketClientBase requestSender, InetSocketAddress address)
             throws IOException {
         DatagramPacket packet = packetWriter.getPacket(address);
         if (expectUnicastResponse) {
@@ -154,4 +168,31 @@
             requestSender.sendMulticastPacket(packet);
         }
     }
+
+    private void sendPacketFromNetwork(MdnsSocketClientBase requestSender,
+            InetSocketAddress address, Network network)
+            throws IOException {
+        DatagramPacket packet = packetWriter.getPacket(address);
+        if (expectUnicastResponse) {
+            requestSender.sendUnicastPacket(packet, network);
+        } else {
+            requestSender.sendMulticastPacket(packet, network);
+        }
+    }
+
+    private void sendPacketToIpv4AndIpv6(MdnsSocketClientBase requestSender, int port,
+            Network network) {
+        try {
+            sendPacketFromNetwork(requestSender,
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), port), network);
+        } catch (IOException e) {
+            Log.i(TAG, "Can't send packet to IPv4", e);
+        }
+        try {
+            sendPacketFromNetwork(requestSender,
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), port), network);
+        } catch (IOException e) {
+            Log.i(TAG, "Can't send packet to IPv6", e);
+        }
+    }
 }
\ No newline at end of file
diff --git a/service/mdns/com/android/server/connectivity/mdns/ExecutorProvider.java b/service-t/src/com/android/server/mdns/ExecutorProvider.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/ExecutorProvider.java
rename to service-t/src/com/android/server/mdns/ExecutorProvider.java
diff --git a/service-t/src/com/android/server/mdns/MdnsAdvertiser.java b/service-t/src/com/android/server/mdns/MdnsAdvertiser.java
new file mode 100644
index 0000000..977478a
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsAdvertiser.java
@@ -0,0 +1,474 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.net.LinkAddress;
+import android.net.Network;
+import android.net.nsd.NsdManager;
+import android.net.nsd.NsdServiceInfo;
+import android.os.Looper;
+import android.util.ArrayMap;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+
+import java.util.List;
+import java.util.Map;
+import java.util.function.BiPredicate;
+import java.util.function.Consumer;
+
+/**
+ * MdnsAdvertiser manages advertising services per {@link com.android.server.NsdService} requests.
+ *
+ * All methods except the constructor must be called on the looper thread.
+ */
+public class MdnsAdvertiser {
+    private static final String TAG = MdnsAdvertiser.class.getSimpleName();
+    static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+
+    private final Looper mLooper;
+    private final AdvertiserCallback mCb;
+
+    // Max-sized buffers to be used as temporary buffer to read/build packets. May be used by
+    // multiple components, but only for self-contained operations in the looper thread, so not
+    // concurrently.
+    // TODO: set according to MTU. 1300 should fit for ethernet MTU 1500 with some overhead.
+    private final byte[] mPacketCreationBuffer = new byte[1300];
+
+    private final MdnsSocketProvider mSocketProvider;
+    private final ArrayMap<Network, InterfaceAdvertiserRequest> mAdvertiserRequests =
+            new ArrayMap<>();
+    private final ArrayMap<MdnsInterfaceSocket, MdnsInterfaceAdvertiser> mAllAdvertisers =
+            new ArrayMap<>();
+    private final SparseArray<Registration> mRegistrations = new SparseArray<>();
+    private final Dependencies mDeps;
+
+    /**
+     * Dependencies for {@link MdnsAdvertiser}, useful for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /**
+         * @see MdnsInterfaceAdvertiser
+         */
+        public MdnsInterfaceAdvertiser makeAdvertiser(@NonNull MdnsInterfaceSocket socket,
+                @NonNull List<LinkAddress> initialAddresses,
+                @NonNull Looper looper, @NonNull byte[] packetCreationBuffer,
+                @NonNull MdnsInterfaceAdvertiser.Callback cb) {
+            // Note NetworkInterface is final and not mockable
+            final String logTag = socket.getInterface().getName();
+            return new MdnsInterfaceAdvertiser(logTag, socket, initialAddresses, looper,
+                    packetCreationBuffer, cb);
+        }
+    }
+
+    private final MdnsInterfaceAdvertiser.Callback mInterfaceAdvertiserCb =
+            new MdnsInterfaceAdvertiser.Callback() {
+        @Override
+        public void onRegisterServiceSucceeded(
+                @NonNull MdnsInterfaceAdvertiser advertiser, int serviceId) {
+            // Wait for all current interfaces to be done probing before notifying of success.
+            if (any(mAllAdvertisers, (k, a) -> a.isProbing(serviceId))) return;
+            // The service may still be unregistered/renamed if a conflict is found on a later added
+            // interface, or if a conflicting announcement/reply is detected (RFC6762 9.)
+
+            final Registration registration = mRegistrations.get(serviceId);
+            if (registration == null) {
+                Log.wtf(TAG, "Register succeeded for unknown registration");
+                return;
+            }
+            if (!registration.mNotifiedRegistrationSuccess) {
+                mCb.onRegisterServiceSucceeded(serviceId, registration.getServiceInfo());
+                registration.mNotifiedRegistrationSuccess = true;
+            }
+        }
+
+        @Override
+        public void onServiceConflict(@NonNull MdnsInterfaceAdvertiser advertiser, int serviceId) {
+            if (DBG) {
+                Log.v(TAG, "Found conflict, restarted probing for service " + serviceId);
+            }
+
+            final Registration registration = mRegistrations.get(serviceId);
+            if (registration == null) return;
+            if (registration.mNotifiedRegistrationSuccess) {
+                // TODO: consider notifying clients that the service is no longer registered with
+                // the old name (back to probing). The legacy implementation did not send any
+                // callback though; it only sent onServiceRegistered after re-probing finishes
+                // (with the old, conflicting, actually not used name as argument... The new
+                // implementation will send callbacks with the new name).
+                registration.mNotifiedRegistrationSuccess = false;
+
+                // The service was done probing, just reset it to probing state (RFC6762 9.)
+                forAllAdvertisers(a -> a.restartProbingForConflict(serviceId));
+                return;
+            }
+
+            // Conflict was found during probing; rename once to find a name that has no conflict
+            registration.updateForConflict(
+                    registration.makeNewServiceInfoForConflict(1 /* renameCount */),
+                    1 /* renameCount */);
+
+            // Keep renaming if the new name conflicts in local registrations
+            updateRegistrationUntilNoConflict((net, adv) -> adv.hasRegistration(registration),
+                    registration);
+
+            // Update advertisers to use the new name
+            forAllAdvertisers(a -> a.renameServiceForConflict(
+                    serviceId, registration.getServiceInfo()));
+        }
+
+        @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);
+        }
+    };
+
+    private boolean hasAnyConflict(
+            @NonNull BiPredicate<Network, InterfaceAdvertiserRequest> applicableAdvertiserFilter,
+            @NonNull NsdServiceInfo newInfo) {
+        return any(mAdvertiserRequests, (network, adv) ->
+                applicableAdvertiserFilter.test(network, adv) && adv.hasConflict(newInfo));
+    }
+
+    private void updateRegistrationUntilNoConflict(
+            @NonNull BiPredicate<Network, InterfaceAdvertiserRequest> applicableAdvertiserFilter,
+            @NonNull Registration registration) {
+        int renameCount = 0;
+        NsdServiceInfo newInfo = registration.getServiceInfo();
+        while (hasAnyConflict(applicableAdvertiserFilter, newInfo)) {
+            renameCount++;
+            newInfo = registration.makeNewServiceInfoForConflict(renameCount);
+        }
+        registration.updateForConflict(newInfo, renameCount);
+    }
+
+    /**
+     * A request for a {@link MdnsInterfaceAdvertiser}.
+     *
+     * This class tracks services to be advertised on all sockets provided via a registered
+     * {@link MdnsSocketProvider.SocketCallback}.
+     */
+    private class InterfaceAdvertiserRequest implements MdnsSocketProvider.SocketCallback {
+        /** Registrations to add to newer MdnsInterfaceAdvertisers when sockets are created. */
+        @NonNull
+        private final SparseArray<Registration> mPendingRegistrations = new SparseArray<>();
+        @NonNull
+        private final ArrayMap<MdnsInterfaceSocket, MdnsInterfaceAdvertiser> mAdvertisers =
+                new ArrayMap<>();
+
+        InterfaceAdvertiserRequest(@Nullable Network requestedNetwork) {
+            mSocketProvider.requestSocket(requestedNetwork, this);
+        }
+
+        /**
+         * Called when an advertiser was destroyed, after all services were unregistered and it sent
+         * exit announcements, or the interface is gone.
+         *
+         * @return true if this {@link InterfaceAdvertiserRequest} should now be deleted.
+         */
+        boolean onAdvertiserDestroyed(@NonNull MdnsInterfaceSocket socket) {
+            mAdvertisers.remove(socket);
+            if (mAdvertisers.size() == 0 && mPendingRegistrations.size() == 0) {
+                // No advertiser is using sockets from this request anymore (in particular for exit
+                // announcements), and there is no registration so newer sockets will not be
+                // necessary, so the request can be unregistered.
+                mSocketProvider.unrequestSocket(this);
+                return true;
+            }
+            return false;
+        }
+
+        /**
+         * Return whether this {@link InterfaceAdvertiserRequest} has the given registration.
+         */
+        boolean hasRegistration(@NonNull Registration registration) {
+            return mPendingRegistrations.indexOfValue(registration) >= 0;
+        }
+
+        /**
+         * Return whether using the proposed new {@link NsdServiceInfo} to add a registration would
+         * cause a conflict in this {@link InterfaceAdvertiserRequest}.
+         */
+        boolean hasConflict(@NonNull NsdServiceInfo newInfo) {
+            return getConflictingService(newInfo) >= 0;
+        }
+
+        /**
+         * Get the ID of a conflicting service, or -1 if none.
+         */
+        int getConflictingService(@NonNull NsdServiceInfo info) {
+            for (int i = 0; i < mPendingRegistrations.size(); i++) {
+                final NsdServiceInfo other = mPendingRegistrations.valueAt(i).getServiceInfo();
+                if (info.getServiceName().equals(other.getServiceName())
+                        && info.getServiceType().equals(other.getServiceType())) {
+                    return mPendingRegistrations.keyAt(i);
+                }
+            }
+            return -1;
+        }
+
+        /**
+         * Add a service.
+         *
+         * Conflicts must be checked via {@link #getConflictingService} before attempting to add.
+         */
+        void addService(int id, Registration registration) {
+            mPendingRegistrations.put(id, registration);
+            for (int i = 0; i < mAdvertisers.size(); i++) {
+                try {
+                    mAdvertisers.valueAt(i).addService(id, registration.getServiceInfo());
+                } catch (NameConflictException e) {
+                    Log.wtf(TAG, "Name conflict adding services that should have unique names", e);
+                }
+            }
+        }
+
+        void removeService(int id) {
+            mPendingRegistrations.remove(id);
+            for (int i = 0; i < mAdvertisers.size(); i++) {
+                mAdvertisers.valueAt(i).removeService(id);
+            }
+        }
+
+        @Override
+        public void onSocketCreated(@NonNull Network network,
+                @NonNull MdnsInterfaceSocket socket,
+                @NonNull List<LinkAddress> addresses) {
+            MdnsInterfaceAdvertiser advertiser = mAllAdvertisers.get(socket);
+            if (advertiser == null) {
+                advertiser = mDeps.makeAdvertiser(socket, addresses, mLooper, mPacketCreationBuffer,
+                        mInterfaceAdvertiserCb);
+                mAllAdvertisers.put(socket, advertiser);
+                advertiser.start();
+            }
+            mAdvertisers.put(socket, advertiser);
+            for (int i = 0; i < mPendingRegistrations.size(); i++) {
+                try {
+                    advertiser.addService(mPendingRegistrations.keyAt(i),
+                            mPendingRegistrations.valueAt(i).getServiceInfo());
+                } catch (NameConflictException e) {
+                    Log.wtf(TAG, "Name conflict adding services that should have unique names", e);
+                }
+            }
+        }
+
+        @Override
+        public void onInterfaceDestroyed(@NonNull Network network,
+                @NonNull MdnsInterfaceSocket socket) {
+            final MdnsInterfaceAdvertiser advertiser = mAdvertisers.get(socket);
+            if (advertiser != null) advertiser.destroyNow();
+        }
+
+        @Override
+        public void onAddressesChanged(@NonNull Network network,
+                @NonNull MdnsInterfaceSocket socket, @NonNull List<LinkAddress> addresses) {
+            final MdnsInterfaceAdvertiser advertiser = mAdvertisers.get(socket);
+            if (advertiser != null) advertiser.updateAddresses(addresses);
+        }
+    }
+
+    private static class Registration {
+        @NonNull
+        final String mOriginalName;
+        boolean mNotifiedRegistrationSuccess;
+        private int mConflictCount;
+        @NonNull
+        private NsdServiceInfo mServiceInfo;
+
+        private Registration(@NonNull NsdServiceInfo serviceInfo) {
+            this.mOriginalName = serviceInfo.getServiceName();
+            this.mServiceInfo = serviceInfo;
+        }
+
+        /**
+         * Update the registration to use a different service name, after a conflict was found.
+         *
+         * @param newInfo New service info to use.
+         * @param renameCount How many renames were done before reaching the current name.
+         */
+        private void updateForConflict(@NonNull NsdServiceInfo newInfo, int renameCount) {
+            mConflictCount += renameCount;
+            mServiceInfo = newInfo;
+        }
+
+        /**
+         * Make a new service name for the registration, after a conflict was found.
+         *
+         * If a name conflict was found during probing or because different advertising requests
+         * used the same name, the registration is attempted again with a new name (here using
+         * a number suffix, (1), (2) etc). Registration success is notified once probing succeeds
+         * with a new name. This matches legacy behavior based on mdnsresponder, and appendix D of
+         * RFC6763.
+         *
+         * @param renameCount How much to increase the number suffix for this conflict.
+         */
+        @NonNull
+        public NsdServiceInfo makeNewServiceInfoForConflict(int renameCount) {
+            // In case of conflict choose a different service name. After the first conflict use
+            // "Name (2)", then "Name (3)" etc.
+            // TODO: use a hidden method in NsdServiceInfo once MdnsAdvertiser is moved to service-t
+            final NsdServiceInfo newInfo = new NsdServiceInfo();
+            newInfo.setServiceName(mOriginalName + " (" + (mConflictCount + renameCount + 1) + ")");
+            newInfo.setServiceType(mServiceInfo.getServiceType());
+            for (Map.Entry<String, byte[]> attr : mServiceInfo.getAttributes().entrySet()) {
+                newInfo.setAttribute(attr.getKey(),
+                        attr.getValue() == null ? null : new String(attr.getValue()));
+            }
+            newInfo.setHost(mServiceInfo.getHost());
+            newInfo.setPort(mServiceInfo.getPort());
+            newInfo.setNetwork(mServiceInfo.getNetwork());
+            // interfaceIndex is not set when registering
+            return newInfo;
+        }
+
+        @NonNull
+        public NsdServiceInfo getServiceInfo() {
+            return mServiceInfo;
+        }
+    }
+
+    /**
+     * Callbacks for advertising services.
+     *
+     * Every method is called on the MdnsAdvertiser looper thread.
+     */
+    public interface AdvertiserCallback {
+        /**
+         * Called when a service was successfully registered, after probing.
+         *
+         * @param serviceId ID of the service provided when registering.
+         * @param registeredInfo Registered info, which may be different from the requested info,
+         *                       after probing and possibly choosing alternative service names.
+         */
+        void onRegisterServiceSucceeded(int serviceId, NsdServiceInfo registeredInfo);
+
+        /**
+         * Called when service registration failed.
+         *
+         * @param serviceId ID of the service provided when registering.
+         * @param errorCode One of {@code NsdManager.FAILURE_*}
+         */
+        void onRegisterServiceFailed(int serviceId, int errorCode);
+
+        // Unregistration is notified immediately as success in NsdService so no callback is needed
+        // here.
+    }
+
+    public MdnsAdvertiser(@NonNull Looper looper, @NonNull MdnsSocketProvider socketProvider,
+            @NonNull AdvertiserCallback cb) {
+        this(looper, socketProvider, cb, new Dependencies());
+    }
+
+    @VisibleForTesting
+    MdnsAdvertiser(@NonNull Looper looper, @NonNull MdnsSocketProvider socketProvider,
+            @NonNull AdvertiserCallback cb, @NonNull Dependencies deps) {
+        mLooper = looper;
+        mCb = cb;
+        mSocketProvider = socketProvider;
+        mDeps = deps;
+    }
+
+    private void checkThread() {
+        if (Thread.currentThread() != mLooper.getThread()) {
+            throw new IllegalStateException("This must be called on the looper thread");
+        }
+    }
+
+    /**
+     * Add a service to advertise.
+     * @param id A unique ID for the service.
+     * @param service The service info to advertise.
+     */
+    public void addService(int id, NsdServiceInfo service) {
+        checkThread();
+        if (mRegistrations.get(id) != null) {
+            Log.e(TAG, "Adding duplicate registration for " + service);
+            // TODO (b/264986328): add a more specific error code
+            mCb.onRegisterServiceFailed(id, NsdManager.FAILURE_INTERNAL_ERROR);
+            return;
+        }
+
+        if (DBG) {
+            Log.i(TAG, "Adding service " + service + " with ID " + id);
+        }
+
+        final Network network = service.getNetwork();
+        final Registration registration = new Registration(service);
+        final BiPredicate<Network, InterfaceAdvertiserRequest> checkConflictFilter;
+        if (network == null) {
+            // If registering on all networks, no advertiser must have conflicts
+            checkConflictFilter = (net, adv) -> true;
+        } else {
+            // If registering on one network, the matching network advertiser and the one for all
+            // networks must not have conflicts
+            checkConflictFilter = (net, adv) -> net == null || network.equals(net);
+        }
+
+        updateRegistrationUntilNoConflict(checkConflictFilter, registration);
+
+        InterfaceAdvertiserRequest advertiser = mAdvertiserRequests.get(network);
+        if (advertiser == null) {
+            advertiser = new InterfaceAdvertiserRequest(network);
+            mAdvertiserRequests.put(network, advertiser);
+        }
+        advertiser.addService(id, registration);
+        mRegistrations.put(id, registration);
+    }
+
+    /**
+     * Remove a previously added service.
+     * @param id ID used when registering.
+     */
+    public void removeService(int id) {
+        checkThread();
+        if (!mRegistrations.contains(id)) return;
+        if (DBG) {
+            Log.i(TAG, "Removing service with ID " + id);
+        }
+        for (int i = mAdvertiserRequests.size() - 1; i >= 0; i--) {
+            final InterfaceAdvertiserRequest advertiser = mAdvertiserRequests.valueAt(i);
+            advertiser.removeService(id);
+        }
+        mRegistrations.remove(id);
+    }
+
+    private static <K, V> boolean any(@NonNull ArrayMap<K, V> map,
+            @NonNull BiPredicate<K, V> predicate) {
+        for (int i = 0; i < map.size(); i++) {
+            if (predicate.test(map.keyAt(i), map.valueAt(i))) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void forAllAdvertisers(@NonNull Consumer<MdnsInterfaceAdvertiser> consumer) {
+        any(mAllAdvertisers, (socket, advertiser) -> {
+            consumer.accept(advertiser);
+            return false;
+        });
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsAnnouncer.java b/service-t/src/com/android/server/mdns/MdnsAnnouncer.java
similarity index 61%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsAnnouncer.java
rename to service-t/src/com/android/server/mdns/MdnsAnnouncer.java
index 91e08a8..27fc945 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsAnnouncer.java
+++ b/service-t/src/com/android/server/mdns/MdnsAnnouncer.java
@@ -22,52 +22,58 @@
 
 import com.android.internal.annotations.VisibleForTesting;
 
-import java.net.SocketAddress;
 import java.util.Collections;
 import java.util.List;
-import java.util.function.Supplier;
 
 /**
  * Sends mDns announcements when a service registration changes and at regular intervals.
  *
  * This allows maintaining other hosts' caches up-to-date. See RFC6762 8.3.
  */
-public class MdnsAnnouncer extends MdnsPacketRepeater<MdnsAnnouncer.AnnouncementInfo> {
+public class MdnsAnnouncer extends MdnsPacketRepeater<MdnsAnnouncer.BaseAnnouncementInfo> {
     private static final long ANNOUNCEMENT_INITIAL_DELAY_MS = 1000L;
     @VisibleForTesting
     static final int ANNOUNCEMENT_COUNT = 8;
 
+    // Matches delay and GoodbyeCount used by the legacy implementation
+    private static final long EXIT_DELAY_MS = 2000L;
+    private static final int EXIT_COUNT = 3;
+
     @NonNull
     private final String mLogTag;
 
-    static class AnnouncementInfo implements MdnsPacketRepeater.Request {
+    /** Base class for announcement requests to send with {@link MdnsAnnouncer}. */
+    public abstract static class BaseAnnouncementInfo implements MdnsPacketRepeater.Request {
+        private final int mServiceId;
         @NonNull
         private final MdnsPacket mPacket;
-        @NonNull
-        private final Supplier<Iterable<SocketAddress>> mDestinationsSupplier;
 
-        AnnouncementInfo(List<MdnsRecord> announcedRecords, List<MdnsRecord> additionalRecords,
-                Supplier<Iterable<SocketAddress>> destinationsSupplier) {
-            // Records to announce (as answers)
-            // Records to place in the "Additional records", with NSEC negative responses
-            // to mark records that have been verified unique
+        protected BaseAnnouncementInfo(int serviceId, @NonNull List<MdnsRecord> announcedRecords,
+                @NonNull List<MdnsRecord> additionalRecords) {
+            mServiceId = serviceId;
             final int flags = 0x8400; // Response, authoritative (rfc6762 18.4)
             mPacket = new MdnsPacket(flags,
                     Collections.emptyList() /* questions */,
                     announcedRecords,
                     Collections.emptyList() /* authorityRecords */,
                     additionalRecords);
-            mDestinationsSupplier = destinationsSupplier;
+        }
+
+        public int getServiceId() {
+            return mServiceId;
         }
 
         @Override
         public MdnsPacket getPacket(int index) {
             return mPacket;
         }
+    }
 
-        @Override
-        public Iterable<SocketAddress> getDestinations(int index) {
-            return mDestinationsSupplier.get();
+    /** Announcement request to send with {@link MdnsAnnouncer}. */
+    public static class AnnouncementInfo extends BaseAnnouncementInfo {
+        AnnouncementInfo(int serviceId, List<MdnsRecord> announcedRecords,
+                List<MdnsRecord> additionalRecords) {
+            super(serviceId, announcedRecords, additionalRecords);
         }
 
         @Override
@@ -82,9 +88,26 @@
         }
     }
 
+    /** Service exit announcement request to send with {@link MdnsAnnouncer}. */
+    public static class ExitAnnouncementInfo extends BaseAnnouncementInfo {
+        ExitAnnouncementInfo(int serviceId, List<MdnsRecord> announcedRecords) {
+            super(serviceId, announcedRecords, Collections.emptyList() /* additionalRecords */);
+        }
+
+        @Override
+        public long getDelayMs(int nextIndex) {
+            return EXIT_DELAY_MS;
+        }
+
+        @Override
+        public int getNumSends() {
+            return EXIT_COUNT;
+        }
+    }
+
     public MdnsAnnouncer(@NonNull String interfaceTag, @NonNull Looper looper,
             @NonNull MdnsReplySender replySender,
-            @Nullable PacketRepeaterCallback<AnnouncementInfo> cb) {
+            @Nullable PacketRepeaterCallback<BaseAnnouncementInfo> cb) {
         super(looper, replySender, cb);
         mLogTag = MdnsAnnouncer.class.getSimpleName() + "/" + interfaceTag;
     }
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsAnyRecord.java b/service-t/src/com/android/server/mdns/MdnsAnyRecord.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsAnyRecord.java
rename to service-t/src/com/android/server/mdns/MdnsAnyRecord.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsConfigs.java b/service-t/src/com/android/server/mdns/MdnsConfigs.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsConfigs.java
rename to service-t/src/com/android/server/mdns/MdnsConfigs.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsConstants.java b/service-t/src/com/android/server/mdns/MdnsConstants.java
similarity index 97%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsConstants.java
rename to service-t/src/com/android/server/mdns/MdnsConstants.java
index 396be5f..f0e1717 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsConstants.java
+++ b/service-t/src/com/android/server/mdns/MdnsConstants.java
@@ -37,6 +37,7 @@
     public static final int FLAGS_QUERY = 0x0000;
     public static final int FLAGS_RESPONSE_MASK = 0xF80F;
     public static final int FLAGS_RESPONSE = 0x8000;
+    public static final int FLAG_TRUNCATED = 0x0200;
     public static final int QCLASS_INTERNET = 0x0001;
     public static final int QCLASS_UNICAST = 0x8000;
     public static final String SUBTYPE_LABEL = "_sub";
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java b/service-t/src/com/android/server/mdns/MdnsDiscoveryManager.java
similarity index 89%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java
rename to service-t/src/com/android/server/mdns/MdnsDiscoveryManager.java
index 0f3c23a..cc6b98b 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsDiscoveryManager.java
+++ b/service-t/src/com/android/server/mdns/MdnsDiscoveryManager.java
@@ -34,18 +34,18 @@
  * This class keeps tracking the set of registered {@link MdnsServiceBrowserListener} instances, and
  * notify them when a mDNS service instance is found, updated, or removed?
  */
-public class MdnsDiscoveryManager implements MdnsSocketClient.Callback {
+public class MdnsDiscoveryManager implements MdnsSocketClientBase.Callback {
     private static final String TAG = MdnsDiscoveryManager.class.getSimpleName();
     public static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
     private static final MdnsLogger LOGGER = new MdnsLogger("MdnsDiscoveryManager");
 
     private final ExecutorProvider executorProvider;
-    private final MdnsSocketClient socketClient;
+    private final MdnsSocketClientBase socketClient;
 
     private final Map<String, MdnsServiceTypeClient> serviceTypeClients = new ArrayMap<>();
 
-    public MdnsDiscoveryManager(
-            @NonNull ExecutorProvider executorProvider, @NonNull MdnsSocketClient socketClient) {
+    public MdnsDiscoveryManager(@NonNull ExecutorProvider executorProvider,
+            @NonNull MdnsSocketClientBase socketClient) {
         this.executorProvider = executorProvider;
         this.socketClient = socketClient;
     }
@@ -76,12 +76,16 @@
                 return;
             }
         }
+        // Request the network for discovery.
+        socketClient.notifyNetworkRequested(listener, searchOptions.getNetwork());
+
         // All listeners of the same service types shares the same MdnsServiceTypeClient.
         MdnsServiceTypeClient serviceTypeClient = serviceTypeClients.get(serviceType);
         if (serviceTypeClient == null) {
             serviceTypeClient = createServiceTypeClient(serviceType);
             serviceTypeClients.put(serviceType, serviceTypeClient);
         }
+        // TODO(b/264634275): Wait for a socket to be created before sending packets.
         serviceTypeClient.startSendAndReceive(listener, searchOptions);
     }
 
@@ -96,20 +100,22 @@
     public synchronized void unregisterListener(
             @NonNull String serviceType, @NonNull MdnsServiceBrowserListener listener) {
         LOGGER.log("Unregistering listener for service type: %s", serviceType);
+        if (DBG) Log.d(TAG, "Unregistering listener for serviceType:" + serviceType);
         MdnsServiceTypeClient serviceTypeClient = serviceTypeClients.get(serviceType);
         if (serviceTypeClient == null) {
             return;
         }
         if (serviceTypeClient.stopSendAndReceive(listener)) {
             // No listener is registered for the service type anymore, remove it from the list of
-          // the
-            // service type clients.
+            // the service type clients.
             serviceTypeClients.remove(serviceType);
             if (serviceTypeClients.isEmpty()) {
                 // No discovery request. Stops the socket client.
                 socketClient.stopDiscovery();
             }
         }
+        // Unrequested the network.
+        socketClient.notifyNetworkUnrequested(listener);
     }
 
     @Override
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java b/service-t/src/com/android/server/mdns/MdnsInetAddressRecord.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsInetAddressRecord.java
rename to service-t/src/com/android/server/mdns/MdnsInetAddressRecord.java
diff --git a/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java b/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java
new file mode 100644
index 0000000..c616e01
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsInterfaceAdvertiser.java
@@ -0,0 +1,344 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.net.LinkAddress;
+import android.net.nsd.NsdServiceInfo;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.net.module.util.HexDump;
+import com.android.server.connectivity.mdns.MdnsAnnouncer.BaseAnnouncementInfo;
+import com.android.server.connectivity.mdns.MdnsPacketRepeater.PacketRepeaterCallback;
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.util.List;
+
+/**
+ * A class that handles advertising services on a {@link MdnsInterfaceSocket} tied to an interface.
+ */
+public class MdnsInterfaceAdvertiser implements MulticastPacketReader.PacketHandler {
+    private static final boolean DBG = MdnsAdvertiser.DBG;
+    @VisibleForTesting
+    public static final long EXIT_ANNOUNCEMENT_DELAY_MS = 100L;
+    @NonNull
+    private final String mTag;
+    @NonNull
+    private final ProbingCallback mProbingCallback = new ProbingCallback();
+    @NonNull
+    private final AnnouncingCallback mAnnouncingCallback = new AnnouncingCallback();
+    @NonNull
+    private final MdnsRecordRepository mRecordRepository;
+    @NonNull
+    private final Callback mCb;
+    // Callbacks are on the same looper thread, but posted to the next handler loop
+    @NonNull
+    private final Handler mCbHandler;
+    @NonNull
+    private final MdnsInterfaceSocket mSocket;
+    @NonNull
+    private final MdnsAnnouncer mAnnouncer;
+    @NonNull
+    private final MdnsProber mProber;
+    @NonNull
+    private final MdnsReplySender mReplySender;
+
+    /**
+     * Callbacks called by {@link MdnsInterfaceAdvertiser} to report status updates.
+     */
+    interface Callback {
+        /**
+         * Called by the advertiser after it successfully registered a service, after probing.
+         */
+        void onRegisterServiceSucceeded(@NonNull MdnsInterfaceAdvertiser advertiser, int serviceId);
+
+        /**
+         * Called by the advertiser when a conflict was found, during or after probing.
+         *
+         * If a conflict is found during probing, the {@link #renameServiceForConflict} must be
+         * called to restart probing and attempt registration with a different name.
+         */
+        void onServiceConflict(@NonNull MdnsInterfaceAdvertiser advertiser, int serviceId);
+
+        /**
+         * Called by the advertiser when it destroyed itself.
+         *
+         * This can happen after a call to {@link #destroyNow()}, or after all services were
+         * unregistered and the advertiser finished sending exit announcements.
+         */
+        void onDestroyed(@NonNull MdnsInterfaceSocket socket);
+    }
+
+    /**
+     * Callbacks from {@link MdnsProber}.
+     */
+    private class ProbingCallback implements
+            PacketRepeaterCallback<MdnsProber.ProbingInfo> {
+        @Override
+        public void onFinished(MdnsProber.ProbingInfo info) {
+            final MdnsAnnouncer.AnnouncementInfo announcementInfo;
+            if (DBG) {
+                Log.v(mTag, "Probing finished for service " + info.getServiceId());
+            }
+            mCbHandler.post(() -> mCb.onRegisterServiceSucceeded(
+                    MdnsInterfaceAdvertiser.this, info.getServiceId()));
+            try {
+                announcementInfo = mRecordRepository.onProbingSucceeded(info);
+            } catch (IOException e) {
+                Log.e(mTag, "Error building announcements", e);
+                return;
+            }
+
+            mAnnouncer.startSending(info.getServiceId(), announcementInfo,
+                    0L /* initialDelayMs */);
+        }
+    }
+
+    /**
+     * Callbacks from {@link MdnsAnnouncer}.
+     */
+    private class AnnouncingCallback implements PacketRepeaterCallback<BaseAnnouncementInfo> {
+        @Override
+        public void onSent(int index, @NonNull BaseAnnouncementInfo info) {
+            mRecordRepository.onAdvertisementSent(info.getServiceId());
+        }
+
+        @Override
+        public void onFinished(@NonNull BaseAnnouncementInfo info) {
+            if (info instanceof MdnsAnnouncer.ExitAnnouncementInfo) {
+                mRecordRepository.removeService(info.getServiceId());
+
+                if (mRecordRepository.getServicesCount() == 0) {
+                    destroyNow();
+                }
+            }
+        }
+    }
+
+    /**
+     * Dependencies for {@link MdnsInterfaceAdvertiser}, useful for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /** @see MdnsRecordRepository */
+        @NonNull
+        public MdnsRecordRepository makeRecordRepository(@NonNull Looper looper) {
+            return new MdnsRecordRepository(looper);
+        }
+
+        /** @see MdnsReplySender */
+        @NonNull
+        public MdnsReplySender makeReplySender(@NonNull String interfaceTag, @NonNull Looper looper,
+                @NonNull MdnsInterfaceSocket socket, @NonNull byte[] packetCreationBuffer) {
+            return new MdnsReplySender(interfaceTag, looper, socket, packetCreationBuffer);
+        }
+
+        /** @see MdnsAnnouncer */
+        public MdnsAnnouncer makeMdnsAnnouncer(@NonNull String interfaceTag, @NonNull Looper looper,
+                @NonNull MdnsReplySender replySender,
+                @Nullable PacketRepeaterCallback<MdnsAnnouncer.BaseAnnouncementInfo> cb) {
+            return new MdnsAnnouncer(interfaceTag, looper, replySender, cb);
+        }
+
+        /** @see MdnsProber */
+        public MdnsProber makeMdnsProber(@NonNull String interfaceTag, @NonNull Looper looper,
+                @NonNull MdnsReplySender replySender,
+                @NonNull PacketRepeaterCallback<MdnsProber.ProbingInfo> cb) {
+            return new MdnsProber(interfaceTag, looper, replySender, cb);
+        }
+    }
+
+    public MdnsInterfaceAdvertiser(@NonNull String logTag,
+            @NonNull MdnsInterfaceSocket socket, @NonNull List<LinkAddress> initialAddresses,
+            @NonNull Looper looper, @NonNull byte[] packetCreationBuffer, @NonNull Callback cb) {
+        this(logTag, socket, initialAddresses, looper, packetCreationBuffer, cb,
+                new Dependencies());
+    }
+
+    public MdnsInterfaceAdvertiser(@NonNull String logTag,
+            @NonNull MdnsInterfaceSocket socket, @NonNull List<LinkAddress> initialAddresses,
+            @NonNull Looper looper, @NonNull byte[] packetCreationBuffer, @NonNull Callback cb,
+            @NonNull Dependencies deps) {
+        mTag = MdnsInterfaceAdvertiser.class.getSimpleName() + "/" + logTag;
+        mRecordRepository = deps.makeRecordRepository(looper);
+        mRecordRepository.updateAddresses(initialAddresses);
+        mSocket = socket;
+        mCb = cb;
+        mCbHandler = new Handler(looper);
+        mReplySender = deps.makeReplySender(logTag, looper, socket, packetCreationBuffer);
+        mAnnouncer = deps.makeMdnsAnnouncer(logTag, looper, mReplySender,
+                mAnnouncingCallback);
+        mProber = deps.makeMdnsProber(logTag, looper, mReplySender, mProbingCallback);
+    }
+
+    /**
+     * 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()}.
+     */
+    public void start() {
+        mSocket.addPacketHandler(this);
+    }
+
+    /**
+     * Start advertising a service.
+     *
+     * @throws NameConflictException There is already a service being advertised with that name.
+     */
+    public void addService(int id, NsdServiceInfo service) throws NameConflictException {
+        final int replacedExitingService = mRecordRepository.addService(id, service);
+        // Cancel announcements for the existing service. This only happens for exiting services
+        // (so cancelling exiting announcements), as per RecordRepository.addService.
+        if (replacedExitingService >= 0) {
+            if (DBG) {
+                Log.d(mTag, "Service " + replacedExitingService
+                        + " getting re-added, cancelling exit announcements");
+            }
+            mAnnouncer.stop(replacedExitingService);
+        }
+        mProber.startProbing(mRecordRepository.setServiceProbing(id));
+    }
+
+    /**
+     * Stop advertising a service.
+     *
+     * This will trigger exit announcements for the service.
+     */
+    public void removeService(int id) {
+        if (!mRecordRepository.hasActiveService(id)) return;
+        mProber.stop(id);
+        mAnnouncer.stop(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.
+            // 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
+            // that was already in-flight while unregistering won't be received after the exit on
+            // interface B.
+            mAnnouncer.startSending(id, exitInfo, EXIT_ANNOUNCEMENT_DELAY_MS);
+        } else {
+            // No exit announcement necessary: remove the service immediately.
+            mRecordRepository.removeService(id);
+            if (mRecordRepository.getServicesCount() == 0) {
+                destroyNow();
+            }
+        }
+    }
+
+    /**
+     * Update interface addresses used to advertise.
+     *
+     * This causes new address records to be announced.
+     */
+    public void updateAddresses(@NonNull List<LinkAddress> newAddresses) {
+        mRecordRepository.updateAddresses(newAddresses);
+        // TODO: restart advertising, but figure out what exit messages need to be sent for the
+        // previous addresses
+    }
+
+    /**
+     * Destroy the advertiser immediately, not sending any exit announcement.
+     *
+     * <p>Useful when the underlying network went away. This will trigger an onDestroyed callback.
+     */
+    public void destroyNow() {
+        for (int serviceId : mRecordRepository.clearServices()) {
+            mProber.stop(serviceId);
+            mAnnouncer.stop(serviceId);
+        }
+        mReplySender.cancelAll();
+        mSocket.removePacketHandler(this);
+        mCbHandler.post(() -> mCb.onDestroyed(mSocket));
+    }
+
+    /**
+     * Reset a service to the probing state due to a conflict found on the network.
+     */
+    public void restartProbingForConflict(int serviceId) {
+        final MdnsProber.ProbingInfo probingInfo = mRecordRepository.setServiceProbing(serviceId);
+        if (probingInfo == null) return;
+
+        mProber.restartForConflict(probingInfo);
+    }
+
+    /**
+     * Rename a service following a conflict found on the network, and restart probing.
+     *
+     * If the service was not registered on this {@link MdnsInterfaceAdvertiser}, this is a no-op.
+     */
+    public void renameServiceForConflict(int serviceId, NsdServiceInfo newInfo) {
+        final MdnsProber.ProbingInfo probingInfo = mRecordRepository.renameServiceForConflict(
+                serviceId, newInfo);
+        if (probingInfo == null) return;
+
+        mProber.restartForConflict(probingInfo);
+    }
+
+    /**
+     * Indicates whether probing is in progress for the given service on this interface.
+     *
+     * Also returns false if the specified service is not registered.
+     */
+    public boolean isProbing(int serviceId) {
+        return mRecordRepository.isProbing(serviceId);
+    }
+
+    @Override
+    public void handlePacket(byte[] recvbuf, int length, InetSocketAddress src) {
+        final MdnsPacket packet;
+        try {
+            packet = MdnsPacket.parse(new MdnsPacketReader(recvbuf, length));
+        } catch (MdnsPacket.ParseException e) {
+            Log.e(mTag, "Error parsing mDNS packet", e);
+            if (DBG) {
+                Log.v(
+                        mTag, "Packet: " + HexDump.toHexString(recvbuf, 0, length));
+            }
+            return;
+        }
+
+        if (DBG) {
+            Log.v(mTag,
+                    "Parsed packet with " + packet.questions.size() + " questions, "
+                            + packet.answers.size() + " answers, "
+                            + packet.authorityRecords.size() + " authority, "
+                            + packet.additionalRecords.size() + " additional from " + src);
+        }
+
+        for (int conflictServiceId : mRecordRepository.getConflictingServices(packet)) {
+            mCbHandler.post(() -> mCb.onServiceConflict(this, conflictServiceId));
+        }
+
+        // Even in case of conflict, add replies for other services. But in general conflicts would
+        // happen when the incoming packet has answer records (not a question), so there will be no
+        // answer. One exception is simultaneous probe tiebreaking (rfc6762 8.2), in which case the
+        // conflicting service is still probing and won't reply either.
+        final MdnsRecordRepository.ReplyInfo answers = mRecordRepository.getReply(packet, src);
+
+        if (answers == null) return;
+        mReplySender.queueReply(answers);
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsInterfaceSocket.java b/service-t/src/com/android/server/mdns/MdnsInterfaceSocket.java
similarity index 66%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsInterfaceSocket.java
rename to service-t/src/com/android/server/mdns/MdnsInterfaceSocket.java
index 6090415..119c7a8 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsInterfaceSocket.java
+++ b/service-t/src/com/android/server/mdns/MdnsInterfaceSocket.java
@@ -22,10 +22,15 @@
 import android.annotation.NonNull;
 import android.net.LinkAddress;
 import android.net.util.SocketUtils;
+import android.os.Handler;
+import android.os.Looper;
 import android.os.ParcelFileDescriptor;
 import android.system.ErrnoException;
+import android.system.Os;
+import android.system.OsConstants;
 import android.util.Log;
 
+import java.io.FileDescriptor;
 import java.io.IOException;
 import java.net.DatagramPacket;
 import java.net.InetSocketAddress;
@@ -41,15 +46,19 @@
  * otherwise.
  *
  * @see MulticastSocket for javadoc of each public method.
+ * @see MulticastSocket for javadoc of each public method.
  */
 public class MdnsInterfaceSocket {
     private static final String TAG = MdnsInterfaceSocket.class.getSimpleName();
     @NonNull private final MulticastSocket mMulticastSocket;
     @NonNull private final NetworkInterface mNetworkInterface;
+    @NonNull private final MulticastPacketReader mPacketReader;
+    @NonNull private final ParcelFileDescriptor mFileDescriptor;
     private boolean mJoinedIpv4 = false;
     private boolean mJoinedIpv6 = false;
 
-    public MdnsInterfaceSocket(@NonNull NetworkInterface networkInterface, int port)
+    public MdnsInterfaceSocket(@NonNull NetworkInterface networkInterface, int port,
+            @NonNull Looper looper, @NonNull byte[] packetReadBuffer)
             throws IOException {
         mNetworkInterface = networkInterface;
         mMulticastSocket = new MulticastSocket(port);
@@ -58,11 +67,19 @@
         mMulticastSocket.setNetworkInterface(networkInterface);
 
         // Bind socket to the interface for receiving from that interface only.
-        try (ParcelFileDescriptor pfd = ParcelFileDescriptor.fromDatagramSocket(mMulticastSocket)) {
-            SocketUtils.bindSocketToInterface(pfd.getFileDescriptor(), mNetworkInterface.getName());
+        mFileDescriptor = ParcelFileDescriptor.fromDatagramSocket(mMulticastSocket);
+        try {
+            final FileDescriptor fd = mFileDescriptor.getFileDescriptor();
+            final int flags = Os.fcntlInt(fd, OsConstants.F_GETFL, 0);
+            Os.fcntlInt(fd, OsConstants.F_SETFL, flags | OsConstants.SOCK_NONBLOCK);
+            SocketUtils.bindSocketToInterface(fd, mNetworkInterface.getName());
         } catch (ErrnoException e) {
             throw new IOException("Error setting socket options", e);
         }
+
+        mPacketReader = new MulticastPacketReader(networkInterface.getName(), mFileDescriptor,
+                new Handler(looper), packetReadBuffer);
+        mPacketReader.start();
     }
 
     /**
@@ -74,23 +91,14 @@
         mMulticastSocket.send(packet);
     }
 
-    /**
-     * Receives a datagram packet from this socket.
-     *
-     * <p>This method could be used on any thread.
-     */
-    public void receive(@NonNull DatagramPacket packet) throws IOException {
-        mMulticastSocket.receive(packet);
-    }
-
-    private boolean hasIpv4Address(List<LinkAddress> addresses) {
+    private static boolean hasIpv4Address(@NonNull List<LinkAddress> addresses) {
         for (LinkAddress address : addresses) {
             if (address.isIpv4()) return true;
         }
         return false;
     }
 
-    private boolean hasIpv6Address(List<LinkAddress> addresses) {
+    private static boolean hasIpv6Address(@NonNull List<LinkAddress> addresses) {
         for (LinkAddress address : addresses) {
             if (address.isIpv6()) return true;
         }
@@ -103,7 +111,7 @@
         maybeJoinIpv6(addresses);
     }
 
-    private boolean joinGroup(InetSocketAddress multicastAddress) {
+    private boolean joinGroup(@NonNull InetSocketAddress multicastAddress) {
         try {
             mMulticastSocket.joinGroup(multicastAddress, mNetworkInterface);
             return true;
@@ -114,7 +122,7 @@
         }
     }
 
-    private void maybeJoinIpv4(List<LinkAddress> addresses) {
+    private void maybeJoinIpv4(@NonNull List<LinkAddress> addresses) {
         final boolean hasAddr = hasIpv4Address(addresses);
         if (!mJoinedIpv4 && hasAddr) {
             mJoinedIpv4 = joinGroup(MULTICAST_IPV4_ADDRESS);
@@ -124,7 +132,7 @@
         }
     }
 
-    private void maybeJoinIpv6(List<LinkAddress> addresses) {
+    private void maybeJoinIpv6(@NonNull List<LinkAddress> addresses) {
         final boolean hasAddr = hasIpv6Address(addresses);
         if (!mJoinedIpv6 && hasAddr) {
             mJoinedIpv6 = joinGroup(MULTICAST_IPV6_ADDRESS);
@@ -134,33 +142,40 @@
         }
     }
 
-    /*** Destroy this socket by leaving all joined multicast groups and closing this socket. */
+    /*** Destroy the socket */
     public void destroy() {
-        if (mJoinedIpv4) {
-            try {
-                mMulticastSocket.leaveGroup(MULTICAST_IPV4_ADDRESS, mNetworkInterface);
-            } catch (IOException e) {
-                Log.e(TAG, "Error leaving IPv4 group for " + mNetworkInterface, e);
-            }
-        }
-        if (mJoinedIpv6) {
-            try {
-                mMulticastSocket.leaveGroup(MULTICAST_IPV6_ADDRESS, mNetworkInterface);
-            } catch (IOException e) {
-                Log.e(TAG, "Error leaving IPv4 group for " + mNetworkInterface, e);
-            }
+        mPacketReader.stop();
+        try {
+            mFileDescriptor.close();
+        } catch (IOException e) {
+            Log.e(TAG, "Close file descriptor failed.");
         }
         mMulticastSocket.close();
     }
 
     /**
-     * Returns the index of the network interface that this socket is bound to. If the interface
-     * cannot be determined, returns -1.
+     * Add a handler to receive callbacks when reads the packet from socket. If the handler is
+     * already set, this is a no-op.
+     */
+    public void addPacketHandler(@NonNull MulticastPacketReader.PacketHandler handler) {
+        mPacketReader.addPacketHandler(handler);
+    }
+
+    /**
+     * Remove a handler added via {@link #addPacketHandler}. If the handler is not present, this is
+     * a no-op.
+     */
+    public void removePacketHandler(@NonNull MulticastPacketReader.PacketHandler handler) {
+        mPacketReader.removePacketHandler(handler);
+    }
+
+    /**
+     * Returns the network interface that this socket is bound to.
      *
      * <p>This method could be used on any thread.
      */
-    public int getInterfaceIndex() {
-        return mNetworkInterface.getIndex();
+    public NetworkInterface getInterface() {
+        return mNetworkInterface;
     }
 
     /*** Returns whether this socket has joined IPv4 group */
diff --git a/service-t/src/com/android/server/mdns/MdnsMultinetworkSocketClient.java b/service-t/src/com/android/server/mdns/MdnsMultinetworkSocketClient.java
new file mode 100644
index 0000000..d959065
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsMultinetworkSocketClient.java
@@ -0,0 +1,219 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import static com.android.server.connectivity.mdns.MdnsSocketProvider.ensureRunningOnHandlerThread;
+import static com.android.server.connectivity.mdns.MdnsSocketProvider.isNetworkMatched;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.net.LinkAddress;
+import android.net.Network;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.ArrayMap;
+import android.util.Log;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetSocketAddress;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * The {@link MdnsMultinetworkSocketClient} manages the multinetwork socket for mDns
+ *
+ *  * <p>This class is not thread safe.
+ */
+public class MdnsMultinetworkSocketClient implements MdnsSocketClientBase {
+    private static final String TAG = MdnsMultinetworkSocketClient.class.getSimpleName();
+    private static final boolean DBG = MdnsDiscoveryManager.DBG;
+
+    @NonNull private final Handler mHandler;
+    @NonNull private final MdnsSocketProvider mSocketProvider;
+    @NonNull private final MdnsResponseDecoder mResponseDecoder;
+
+    private final Map<MdnsServiceBrowserListener, InterfaceSocketCallback> mRequestedNetworks =
+            new ArrayMap<>();
+    private final ArrayMap<MdnsInterfaceSocket, Network> mActiveNetworkSockets = new ArrayMap<>();
+    private final ArrayMap<MdnsInterfaceSocket, ReadPacketHandler> mSocketPacketHandlers =
+            new ArrayMap<>();
+    private MdnsSocketClientBase.Callback mCallback = null;
+    private int mReceivedPacketNumber = 0;
+
+    public MdnsMultinetworkSocketClient(@NonNull Looper looper,
+            @NonNull MdnsSocketProvider provider) {
+        mHandler = new Handler(looper);
+        mSocketProvider = provider;
+        mResponseDecoder = new MdnsResponseDecoder(
+                new MdnsResponseDecoder.Clock(), null /* serviceType */);
+    }
+
+    private class InterfaceSocketCallback implements MdnsSocketProvider.SocketCallback {
+        @Override
+        public void onSocketCreated(@NonNull Network network,
+                @NonNull MdnsInterfaceSocket socket, @NonNull List<LinkAddress> addresses) {
+            // The socket may be already created by other request before, try to get the stored
+            // ReadPacketHandler.
+            ReadPacketHandler handler = mSocketPacketHandlers.get(socket);
+            if (handler == null) {
+                // First request to create this socket. Initial a ReadPacketHandler for this socket.
+                handler = new ReadPacketHandler(network, socket.getInterface().getIndex());
+                mSocketPacketHandlers.put(socket, handler);
+            }
+            socket.addPacketHandler(handler);
+            mActiveNetworkSockets.put(socket, network);
+        }
+
+        @Override
+        public void onInterfaceDestroyed(@NonNull Network network,
+                @NonNull MdnsInterfaceSocket socket) {
+            mSocketPacketHandlers.remove(socket);
+            mActiveNetworkSockets.remove(socket);
+        }
+    }
+
+    private class ReadPacketHandler implements MulticastPacketReader.PacketHandler {
+        private final Network mNetwork;
+        private final int mInterfaceIndex;
+
+        ReadPacketHandler(@NonNull Network network, int interfaceIndex) {
+            mNetwork = network;
+            mInterfaceIndex = interfaceIndex;
+        }
+
+        @Override
+        public void handlePacket(byte[] recvbuf, int length, InetSocketAddress src) {
+            processResponsePacket(recvbuf, length, mInterfaceIndex, mNetwork);
+        }
+    }
+
+    /*** Set callback for receiving mDns response */
+    @Override
+    public void setCallback(@Nullable MdnsSocketClientBase.Callback callback) {
+        ensureRunningOnHandlerThread(mHandler);
+        mCallback = callback;
+    }
+
+    /***
+     * Notify that the given network is requested for mdns discovery / resolution
+     *
+     * @param listener the listener for discovery.
+     * @param network the target network for discovery. Null means discovery on all possible
+     *                interfaces.
+     */
+    @Override
+    public void notifyNetworkRequested(@NonNull MdnsServiceBrowserListener listener,
+            @Nullable Network network) {
+        ensureRunningOnHandlerThread(mHandler);
+        InterfaceSocketCallback callback = mRequestedNetworks.get(listener);
+        if (callback != null) {
+            throw new IllegalArgumentException("Can not register duplicated listener");
+        }
+
+        if (DBG) Log.d(TAG, "notifyNetworkRequested: network=" + network);
+        callback = new InterfaceSocketCallback();
+        mRequestedNetworks.put(listener, callback);
+        mSocketProvider.requestSocket(network, callback);
+    }
+
+    /*** Notify that the network is unrequested */
+    @Override
+    public void notifyNetworkUnrequested(@NonNull MdnsServiceBrowserListener listener) {
+        ensureRunningOnHandlerThread(mHandler);
+        final InterfaceSocketCallback callback = mRequestedNetworks.remove(listener);
+        if (callback == null) {
+            Log.e(TAG, "Can not be unrequested with unknown listener=" + listener);
+            return;
+        }
+        mSocketProvider.unrequestSocket(callback);
+    }
+
+    private void sendMdnsPacket(@NonNull DatagramPacket packet, @Nullable Network targetNetwork) {
+        final boolean isIpv6 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
+                instanceof Inet6Address;
+        final boolean isIpv4 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
+                instanceof Inet4Address;
+        for (int i = 0; i < mActiveNetworkSockets.size(); i++) {
+            final MdnsInterfaceSocket socket = mActiveNetworkSockets.keyAt(i);
+            final Network network = mActiveNetworkSockets.valueAt(i);
+            // Check ip capability and network before sending packet
+            if (((isIpv6 && socket.hasJoinedIpv6()) || (isIpv4 && socket.hasJoinedIpv4()))
+                    && isNetworkMatched(targetNetwork, network)) {
+                try {
+                    socket.send(packet);
+                } catch (IOException e) {
+                    Log.e(TAG, "Failed to send a mDNS packet.", e);
+                }
+            }
+        }
+    }
+
+    private void processResponsePacket(byte[] recvbuf, int length, int interfaceIndex,
+            @NonNull Network network) {
+        int packetNumber = ++mReceivedPacketNumber;
+
+        final List<MdnsResponse> responses = new ArrayList<>();
+        final int errorCode = mResponseDecoder.decode(
+                recvbuf, length, responses, interfaceIndex, network);
+        if (errorCode == MdnsResponseDecoder.SUCCESS) {
+            for (MdnsResponse response : responses) {
+                if (mCallback != null) {
+                    mCallback.onResponseReceived(response);
+                }
+            }
+        } else if (errorCode != MdnsResponseErrorCode.ERROR_NOT_RESPONSE_MESSAGE) {
+            if (mCallback != null) {
+                mCallback.onFailedToParseMdnsResponse(packetNumber, errorCode);
+            }
+        }
+    }
+
+    /** Sends a mDNS request packet that asks for multicast response. */
+    @Override
+    public void sendMulticastPacket(@NonNull DatagramPacket packet) {
+        sendMulticastPacket(packet, null /* network */);
+    }
+
+    /**
+     * Sends a mDNS request packet via given network that asks for multicast response. Null network
+     * means sending packet via all networks.
+     */
+    @Override
+    public void sendMulticastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
+        mHandler.post(() -> sendMdnsPacket(packet, network));
+    }
+
+    /** Sends a mDNS request packet that asks for unicast response. */
+    @Override
+    public void sendUnicastPacket(@NonNull DatagramPacket packet) {
+        sendUnicastPacket(packet, null /* network */);
+    }
+
+    /**
+     * Sends a mDNS request packet via given network that asks for unicast response. Null network
+     * means sending packet via all networks.
+     */
+    @Override
+    public void sendUnicastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
+        // TODO: Separate unicast packet.
+        mHandler.post(() -> sendMdnsPacket(packet, network));
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsNsecRecord.java b/service-t/src/com/android/server/mdns/MdnsNsecRecord.java
similarity index 86%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsNsecRecord.java
rename to service-t/src/com/android/server/mdns/MdnsNsecRecord.java
index 06fdd5e..6ec2f99 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsNsecRecord.java
+++ b/service-t/src/com/android/server/mdns/MdnsNsecRecord.java
@@ -17,12 +17,14 @@
 package com.android.server.connectivity.mdns;
 
 import android.net.DnsResolver;
+import android.text.TextUtils;
 
 import com.android.net.module.util.CollectionUtils;
 
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Objects;
 
 /**
  * A mDNS "NSEC" record, used in particular for negative responses (RFC6762 6.1).
@@ -140,4 +142,30 @@
         writer.writeUInt8(bytesInBlock);
         writer.writeBytes(bytes);
     }
+
+    @Override
+    public String toString() {
+        return "NSEC: NextDomain: " + TextUtils.join(".", mNextDomain)
+                + " Types " + Arrays.toString(mTypes);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(),
+                Arrays.hashCode(mNextDomain), Arrays.hashCode(mTypes));
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (this == other) {
+            return true;
+        }
+        if (!(other instanceof MdnsNsecRecord)) {
+            return false;
+        }
+
+        return super.equals(other)
+                && Arrays.equals(mNextDomain, ((MdnsNsecRecord) other).mNextDomain)
+                && Arrays.equals(mTypes, ((MdnsNsecRecord) other).mTypes);
+    }
 }
diff --git a/service-t/src/com/android/server/mdns/MdnsPacket.java b/service-t/src/com/android/server/mdns/MdnsPacket.java
new file mode 100644
index 0000000..27002b9
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsPacket.java
@@ -0,0 +1,231 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.util.Log;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * A class holding data that can be included in a mDNS packet.
+ */
+public class MdnsPacket {
+    private static final String TAG = MdnsPacket.class.getSimpleName();
+
+    public final int flags;
+    @NonNull
+    public final List<MdnsRecord> questions;
+    @NonNull
+    public final List<MdnsRecord> answers;
+    @NonNull
+    public final List<MdnsRecord> authorityRecords;
+    @NonNull
+    public final List<MdnsRecord> additionalRecords;
+
+    MdnsPacket(int flags,
+            @NonNull List<MdnsRecord> questions,
+            @NonNull List<MdnsRecord> answers,
+            @NonNull List<MdnsRecord> authorityRecords,
+            @NonNull List<MdnsRecord> additionalRecords) {
+        this.flags = flags;
+        this.questions = Collections.unmodifiableList(questions);
+        this.answers = Collections.unmodifiableList(answers);
+        this.authorityRecords = Collections.unmodifiableList(authorityRecords);
+        this.additionalRecords = Collections.unmodifiableList(additionalRecords);
+    }
+
+    /**
+     * Exception thrown on parse errors.
+     */
+    public static class ParseException extends IOException {
+        public final int code;
+
+        public ParseException(int code, @NonNull String message, @Nullable Throwable cause) {
+            super(message, cause);
+            this.code = code;
+        }
+    }
+
+    /**
+     * Parse the packet in the provided {@link MdnsPacketReader}.
+     */
+    @NonNull
+    public static MdnsPacket parse(@NonNull MdnsPacketReader reader) throws ParseException {
+        final int flags;
+        try {
+            reader.readUInt16(); // transaction ID (not used)
+            flags = reader.readUInt16();
+        } catch (EOFException e) {
+            throw new ParseException(MdnsResponseErrorCode.ERROR_END_OF_FILE,
+                    "Reached the end of the mDNS response unexpectedly.", e);
+        }
+        return parseRecordsSection(reader, flags);
+    }
+
+    /**
+     * Parse the records section of a mDNS packet in the provided {@link MdnsPacketReader}.
+     *
+     * The records section starts with the questions count, just after the packet flags.
+     */
+    public static MdnsPacket parseRecordsSection(@NonNull MdnsPacketReader reader, int flags)
+            throws ParseException {
+        try {
+            final int numQuestions = reader.readUInt16();
+            final int numAnswers = reader.readUInt16();
+            final int numAuthority = reader.readUInt16();
+            final int numAdditional = reader.readUInt16();
+
+            final ArrayList<MdnsRecord> questions = parseRecords(reader, numQuestions, true);
+            final ArrayList<MdnsRecord> answers = parseRecords(reader, numAnswers, false);
+            final ArrayList<MdnsRecord> authority = parseRecords(reader, numAuthority, false);
+            final ArrayList<MdnsRecord> additional = parseRecords(reader, numAdditional, false);
+
+            return new MdnsPacket(flags, questions, answers, authority, additional);
+        } catch (EOFException e) {
+            throw new ParseException(MdnsResponseErrorCode.ERROR_END_OF_FILE,
+                    "Reached the end of the mDNS response unexpectedly.", e);
+        }
+    }
+
+    private static ArrayList<MdnsRecord> parseRecords(@NonNull MdnsPacketReader reader, int count,
+            boolean isQuestion)
+            throws ParseException {
+        final ArrayList<MdnsRecord> records = new ArrayList<>(count);
+        for (int i = 0; i < count; ++i) {
+            final MdnsRecord record = parseRecord(reader, isQuestion);
+            if (record != null) {
+                records.add(record);
+            }
+        }
+        return records;
+    }
+
+    @Nullable
+    private static MdnsRecord parseRecord(@NonNull MdnsPacketReader reader, boolean isQuestion)
+            throws ParseException {
+        String[] name;
+        try {
+            name = reader.readLabels();
+        } catch (IOException e) {
+            throw new ParseException(MdnsResponseErrorCode.ERROR_READING_RECORD_NAME,
+                    "Failed to read labels from mDNS response.", e);
+        }
+
+        final int type;
+        try {
+            type = reader.readUInt16();
+        } catch (EOFException e) {
+            throw new ParseException(MdnsResponseErrorCode.ERROR_END_OF_FILE,
+                    "Reached the end of the mDNS response unexpectedly.", e);
+        }
+
+        switch (type) {
+            case MdnsRecord.TYPE_A: {
+                try {
+                    return new MdnsInetAddressRecord(name, MdnsRecord.TYPE_A, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_A_RDATA,
+                            "Failed to read A record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_AAAA: {
+                try {
+                    return new MdnsInetAddressRecord(name,
+                            MdnsRecord.TYPE_AAAA, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_AAAA_RDATA,
+                            "Failed to read AAAA record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_PTR: {
+                try {
+                    return new MdnsPointerRecord(name, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_PTR_RDATA,
+                            "Failed to read PTR record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_SRV: {
+                try {
+                    return new MdnsServiceRecord(name, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_SRV_RDATA,
+                            "Failed to read SRV record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_TXT: {
+                try {
+                    return new MdnsTextRecord(name, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_TXT_RDATA,
+                            "Failed to read TXT record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_NSEC: {
+                try {
+                    return new MdnsNsecRecord(name, reader, isQuestion);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_NSEC_RDATA,
+                            "Failed to read NSEC record from mDNS response.", e);
+                }
+            }
+
+            case MdnsRecord.TYPE_ANY: {
+                try {
+                    return new MdnsAnyRecord(name, reader);
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_READING_ANY_RDATA,
+                            "Failed to read TYPE_ANY record from mDNS response.", e);
+                }
+            }
+
+            default: {
+                try {
+                    if (MdnsAdvertiser.DBG) {
+                        Log.i(TAG, "Skipping parsing of record of unhandled type " + type);
+                    }
+                    skipMdnsRecord(reader, isQuestion);
+                    return null;
+                } catch (IOException e) {
+                    throw new ParseException(MdnsResponseErrorCode.ERROR_SKIPPING_UNKNOWN_RECORD,
+                            "Failed to skip mDNS record.", e);
+                }
+            }
+        }
+    }
+
+    private static void skipMdnsRecord(@NonNull MdnsPacketReader reader, boolean isQuestion)
+            throws IOException {
+        reader.skip(2); // Skip the class
+        if (isQuestion) return;
+        // Skip TTL and data
+        reader.skip(4);
+        int dataLength = reader.readUInt16();
+        reader.skip(dataLength);
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsPacketReader.java b/service-t/src/com/android/server/mdns/MdnsPacketReader.java
similarity index 97%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsPacketReader.java
rename to service-t/src/com/android/server/mdns/MdnsPacketReader.java
index 856a2cd..aa38844 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsPacketReader.java
+++ b/service-t/src/com/android/server/mdns/MdnsPacketReader.java
@@ -38,8 +38,13 @@
 
     /** Constructs a reader for the given packet. */
     public MdnsPacketReader(DatagramPacket packet) {
-        buf = packet.getData();
-        count = packet.getLength();
+        this(packet.getData(), packet.getLength());
+    }
+
+    /** Constructs a reader for the given packet. */
+    public MdnsPacketReader(byte[] buffer, int length) {
+        buf = buffer;
+        count = length;
         pos = 0;
         limit = -1;
         labelDictionary = new SparseArray<>(16);
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsPacketRepeater.java b/service-t/src/com/android/server/mdns/MdnsPacketRepeater.java
similarity index 88%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsPacketRepeater.java
rename to service-t/src/com/android/server/mdns/MdnsPacketRepeater.java
index 015dbd8..4c385da 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsPacketRepeater.java
+++ b/service-t/src/com/android/server/mdns/MdnsPacketRepeater.java
@@ -16,6 +16,9 @@
 
 package com.android.server.connectivity.mdns;
 
+import static com.android.server.connectivity.mdns.MdnsRecordRepository.IPV4_ADDR;
+import static com.android.server.connectivity.mdns.MdnsRecordRepository.IPV6_ADDR;
+
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.os.Handler;
@@ -24,7 +27,7 @@
 import android.util.Log;
 
 import java.io.IOException;
-import java.net.SocketAddress;
+import java.net.InetSocketAddress;
 
 /**
  * A class used to send several packets at given time intervals.
@@ -32,6 +35,10 @@
  */
 public abstract class MdnsPacketRepeater<T extends MdnsPacketRepeater.Request> {
     private static final boolean DBG = MdnsAdvertiser.DBG;
+    private static final InetSocketAddress[] ALL_ADDRS = new InetSocketAddress[] {
+            IPV4_ADDR, IPV6_ADDR
+    };
+
     @NonNull
     private final MdnsReplySender mReplySender;
     @NonNull
@@ -70,12 +77,6 @@
         MdnsPacket getPacket(int index);
 
         /**
-         * Get a set of destinations for the packet for one iteration.
-         */
-        @NonNull
-        Iterable<SocketAddress> getDestinations(int index);
-
-        /**
          * Get the delay in milliseconds until the next packet transmission.
          */
         long getDelayMs(int nextIndex);
@@ -110,12 +111,13 @@
             }
 
             final MdnsPacket packet = request.getPacket(index);
-            final Iterable<SocketAddress> destinations = request.getDestinations(index);
             if (DBG) {
-                Log.v(getTag(), "Sending packets to " + destinations + " for iteration "
-                        + index + " out of " + request.getNumSends());
+                Log.v(getTag(), "Sending packets for iteration " + index + " out of "
+                        + request.getNumSends() + " for ID " + msg.what);
             }
-            for (SocketAddress destination : destinations) {
+            // Send to both v4 and v6 addresses; the reply sender will take care of ignoring the
+            // send when the socket has not joined the relevant group.
+            for (InetSocketAddress destination : ALL_ADDRS) {
                 try {
                     mReplySender.sendNow(packet, destination);
                 } catch (IOException e) {
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsPacketWriter.java b/service-t/src/com/android/server/mdns/MdnsPacketWriter.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsPacketWriter.java
rename to service-t/src/com/android/server/mdns/MdnsPacketWriter.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsPointerRecord.java b/service-t/src/com/android/server/mdns/MdnsPointerRecord.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsPointerRecord.java
rename to service-t/src/com/android/server/mdns/MdnsPointerRecord.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsProber.java b/service-t/src/com/android/server/mdns/MdnsProber.java
similarity index 84%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsProber.java
rename to service-t/src/com/android/server/mdns/MdnsProber.java
index db7049e..669b323 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsProber.java
+++ b/service-t/src/com/android/server/mdns/MdnsProber.java
@@ -22,12 +22,10 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.net.module.util.CollectionUtils;
 
-import java.net.SocketAddress;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
-import java.util.function.Supplier;
 
 /**
  * Sends mDns probe requests to verify service records are unique on the network.
@@ -35,37 +33,32 @@
  * TODO: implement receiving replies and handling conflicts.
  */
 public class MdnsProber extends MdnsPacketRepeater<MdnsProber.ProbingInfo> {
+    private static final long CONFLICT_RETRY_DELAY_MS = 5_000L;
     @NonNull
     private final String mLogTag;
 
     public MdnsProber(@NonNull String interfaceTag, @NonNull Looper looper,
             @NonNull MdnsReplySender replySender,
             @NonNull PacketRepeaterCallback<ProbingInfo> cb) {
-        // 3 packets as per https://datatracker.ietf.org/doc/html/rfc6762#section-8.1
         super(looper, replySender, cb);
         mLogTag = MdnsProber.class.getSimpleName() + "/" + interfaceTag;
     }
 
-    static class ProbingInfo implements Request {
+    /** Probing request to send with {@link MdnsProber}. */
+    public static class ProbingInfo implements Request {
 
         private final int mServiceId;
         @NonNull
         private final MdnsPacket mPacket;
-        @NonNull
-        private final Supplier<Iterable<SocketAddress>> mDestinationsSupplier;
 
         /**
          * Create a new ProbingInfo
          * @param serviceId Service to probe for.
          * @param probeRecords Records to be probed for uniqueness.
-         * @param destinationsSupplier Supplier for the probe destinations. Will be called on the
-         *                             probe handler thread for each probe.
          */
-        ProbingInfo(int serviceId, @NonNull List<MdnsRecord> probeRecords,
-                @NonNull Supplier<Iterable<SocketAddress>> destinationsSupplier) {
+        ProbingInfo(int serviceId, @NonNull List<MdnsRecord> probeRecords) {
             mServiceId = serviceId;
             mPacket = makePacket(probeRecords);
-            mDestinationsSupplier = destinationsSupplier;
         }
 
         public int getServiceId() {
@@ -78,12 +71,6 @@
             return mPacket;
         }
 
-        @NonNull
-        @Override
-        public Iterable<SocketAddress> getDestinations(int index) {
-            return mDestinationsSupplier.get();
-        }
-
         @Override
         public long getDelayMs(int nextIndex) {
             // As per https://datatracker.ietf.org/doc/html/rfc6762#section-8.1
@@ -153,4 +140,18 @@
     private void startProbing(@NonNull ProbingInfo info, long delay) {
         startSending(info.getServiceId(), info, delay);
     }
+
+    /**
+     * Restart probing with new service info as a conflict was found.
+     */
+    public void restartForConflict(@NonNull ProbingInfo newInfo) {
+        stop(newInfo.getServiceId());
+
+        /* RFC 6762 8.1: "If fifteen conflicts occur within any ten-second period, then the host
+        MUST wait at least five seconds before each successive additional probe attempt. [...]
+        For very simple devices, a valid way to comply with this requirement is to always wait
+        five seconds after any failed probe attempt before trying again. */
+        // TODO: count 15 conflicts in 10s instead of waiting for 5s every time
+        startProbing(newInfo, CONFLICT_RETRY_DELAY_MS);
+    }
 }
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsRecord.java b/service-t/src/com/android/server/mdns/MdnsRecord.java
similarity index 99%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsRecord.java
rename to service-t/src/com/android/server/mdns/MdnsRecord.java
index 00871ea..bcee9d1 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsRecord.java
+++ b/service-t/src/com/android/server/mdns/MdnsRecord.java
@@ -45,6 +45,7 @@
     private static final int FLAG_CACHE_FLUSH = 0x8000;
 
     public static final long RECEIPT_TIME_NOT_SENT = 0L;
+    public static final int CLASS_ANY = 0x00ff;
 
     /** Status indicating that the record is current. */
     public static final int STATUS_OK = 0;
@@ -317,4 +318,4 @@
             return (recordType * 31) + Arrays.hashCode(recordName);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/service-t/src/com/android/server/mdns/MdnsRecordRepository.java b/service-t/src/com/android/server/mdns/MdnsRecordRepository.java
new file mode 100644
index 0000000..e975ab4
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsRecordRepository.java
@@ -0,0 +1,885 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.TargetApi;
+import android.net.LinkAddress;
+import android.net.nsd.NsdServiceInfo;
+import android.os.Build;
+import android.os.Looper;
+import android.os.SystemClock;
+import android.util.ArraySet;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.net.module.util.CollectionUtils;
+import com.android.net.module.util.HexDump;
+
+import java.io.IOException;
+import java.net.Inet4Address;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.NetworkInterface;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Random;
+import java.util.Set;
+import java.util.TreeMap;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * A repository of records advertised through {@link MdnsInterfaceAdvertiser}.
+ *
+ * Must be used on a consistent looper thread.
+ */
+@TargetApi(Build.VERSION_CODES.TIRAMISU) // Allow calling T+ APIs; this is only loaded on T+
+public class MdnsRecordRepository {
+    // RFC6762 p.15
+    private static final long MIN_MULTICAST_REPLY_INTERVAL_MS = 1_000L;
+
+    // TTLs as per RFC6762 10.
+    // TTL for records with a host name as the resource record's name (e.g., A, AAAA, HINFO) or a
+    // host name contained within the resource record's rdata (e.g., SRV, reverse mapping PTR
+    // record)
+    private static final long NAME_RECORDS_TTL_MILLIS = TimeUnit.SECONDS.toMillis(120);
+    // TTL for other records
+    private static final long NON_NAME_RECORDS_TTL_MILLIS = TimeUnit.MINUTES.toMillis(75);
+
+    // Top-level domain for link-local queries, as per RFC6762 3.
+    private static final String LOCAL_TLD = "local";
+
+    // Service type for service enumeration (RFC6763 9.)
+    private static final String[] DNS_SD_SERVICE_TYPE =
+            new String[] { "_services", "_dns-sd", "_udp", LOCAL_TLD };
+
+    public static final InetSocketAddress IPV6_ADDR = new InetSocketAddress(
+            MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT);
+    public static final InetSocketAddress IPV4_ADDR = new InetSocketAddress(
+            MdnsConstants.getMdnsIPv4Address(), MdnsConstants.MDNS_PORT);
+
+    @NonNull
+    private final Random mDelayGenerator = new Random();
+    // Map of service unique ID -> records for service
+    @NonNull
+    private final SparseArray<ServiceRegistration> mServices = new SparseArray<>();
+    @NonNull
+    private final List<RecordInfo<?>> mGeneralRecords = new ArrayList<>();
+    @NonNull
+    private final Looper mLooper;
+    @NonNull
+    private String[] mDeviceHostname;
+
+    public MdnsRecordRepository(@NonNull Looper looper) {
+        this(looper, new Dependencies());
+    }
+
+    @VisibleForTesting
+    public MdnsRecordRepository(@NonNull Looper looper, @NonNull Dependencies deps) {
+        mDeviceHostname = deps.getHostname();
+        mLooper = looper;
+    }
+
+    /**
+     * Dependencies to use with {@link MdnsRecordRepository}, useful for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /**
+         * Get a unique hostname to be used by the device.
+         */
+        @NonNull
+        public String[] getHostname() {
+            // Generate a very-probably-unique hostname. This allows minimizing possible conflicts
+            // to the point that probing for it is no longer necessary (as per RFC6762 8.1 last
+            // paragraph), and does not leak more information than what could already be obtained by
+            // looking at the mDNS packets source address.
+            // This differs from historical behavior that just used "Android.local" for many
+            // devices, creating a lot of conflicts.
+            // Having a different hostname per interface is an acceptable option as per RFC6762 14.
+            // This hostname will change every time the interface is reconnected, so this does not
+            // allow tracking the device.
+            // TODO: consider deriving a hostname from other sources, such as the IPv6 addresses
+            // (reusing the same privacy-protecting mechanics).
+            return new String[] {
+                    "Android_" + UUID.randomUUID().toString().replace("-", ""), LOCAL_TLD };
+        }
+
+        /**
+         * @see NetworkInterface#getInetAddresses().
+         */
+        @NonNull
+        public Enumeration<InetAddress> getInterfaceInetAddresses(@NonNull NetworkInterface iface) {
+            return iface.getInetAddresses();
+        }
+    }
+
+    private static class RecordInfo<T extends MdnsRecord> {
+        public final T record;
+        public final NsdServiceInfo serviceInfo;
+
+        /**
+         * Whether the name of this record is expected to be fully owned by the service or may be
+         * advertised by other hosts as well (shared).
+         */
+        public final boolean isSharedName;
+
+        /**
+         * Whether probing is still in progress for the record.
+         */
+        public boolean isProbing;
+
+        /**
+         * Last time (as per SystemClock.elapsedRealtime) when advertised via multicast, 0 if never
+         */
+        public long lastAdvertisedTimeMs;
+
+        /**
+         * Last time (as per SystemClock.elapsedRealtime) when sent via unicast or multicast,
+         * 0 if never
+         */
+        public long lastSentTimeMs;
+
+        RecordInfo(NsdServiceInfo serviceInfo, T record, boolean sharedName,
+                 boolean probing) {
+            this.serviceInfo = serviceInfo;
+            this.record = record;
+            this.isSharedName = sharedName;
+            this.isProbing = probing;
+        }
+    }
+
+    private static class ServiceRegistration {
+        @NonNull
+        public final List<RecordInfo<?>> allRecords;
+        @NonNull
+        public final RecordInfo<MdnsPointerRecord> ptrRecord;
+        @NonNull
+        public final RecordInfo<MdnsServiceRecord> srvRecord;
+        @NonNull
+        public final RecordInfo<MdnsTextRecord> txtRecord;
+        @NonNull
+        public final NsdServiceInfo serviceInfo;
+
+        /**
+         * Whether the service is sending exit announcements and will be destroyed soon.
+         */
+        public boolean exiting = false;
+
+        /**
+         * Create a ServiceRegistration for dns-sd service registration (RFC6763).
+         *
+         * @param deviceHostname Hostname of the device (for the interface used)
+         * @param serviceInfo Service to advertise
+         */
+        ServiceRegistration(@NonNull String[] deviceHostname, @NonNull NsdServiceInfo serviceInfo) {
+            this.serviceInfo = serviceInfo;
+
+            final String[] serviceType = splitServiceType(serviceInfo);
+            final String[] serviceName = splitFullyQualifiedName(serviceInfo, serviceType);
+
+            // Service PTR record
+            ptrRecord = new RecordInfo<>(
+                    serviceInfo,
+                    new MdnsPointerRecord(
+                            serviceType,
+                            0L /* receiptTimeMillis */,
+                            false /* cacheFlush */,
+                            NON_NAME_RECORDS_TTL_MILLIS,
+                            serviceName),
+                    true /* sharedName */, true /* probing */);
+
+            srvRecord = new RecordInfo<>(
+                    serviceInfo,
+                    new MdnsServiceRecord(serviceName,
+                            0L /* receiptTimeMillis */,
+                            true /* cacheFlush */,
+                            NAME_RECORDS_TTL_MILLIS, 0 /* servicePriority */, 0 /* serviceWeight */,
+                            serviceInfo.getPort(),
+                            deviceHostname),
+                    false /* sharedName */, true /* probing */);
+
+            txtRecord = new RecordInfo<>(
+                    serviceInfo,
+                    new MdnsTextRecord(serviceName,
+                            0L /* receiptTimeMillis */,
+                            true /* cacheFlush */, // Service name is verified unique after probing
+                            NON_NAME_RECORDS_TTL_MILLIS,
+                            attrsToTextEntries(serviceInfo.getAttributes())),
+                    false /* sharedName */, true /* probing */);
+
+            final ArrayList<RecordInfo<?>> allRecords = new ArrayList<>(4);
+            allRecords.add(ptrRecord);
+            allRecords.add(srvRecord);
+            allRecords.add(txtRecord);
+            // Service type enumeration record (RFC6763 9.)
+            allRecords.add(new RecordInfo<>(
+                    serviceInfo,
+                    new MdnsPointerRecord(
+                            DNS_SD_SERVICE_TYPE,
+                            0L /* receiptTimeMillis */,
+                            false /* cacheFlush */,
+                            NON_NAME_RECORDS_TTL_MILLIS,
+                            serviceType),
+                    true /* sharedName */, true /* probing */));
+
+            this.allRecords = Collections.unmodifiableList(allRecords);
+        }
+
+        void setProbing(boolean probing) {
+            for (RecordInfo<?> info : allRecords) {
+                info.isProbing = probing;
+            }
+        }
+    }
+
+    /**
+     * Inform the repository of the latest interface addresses.
+     */
+    public void updateAddresses(@NonNull List<LinkAddress> newAddresses) {
+        mGeneralRecords.clear();
+        for (LinkAddress addr : newAddresses) {
+            final String[] revDnsAddr = getReverseDnsAddress(addr.getAddress());
+            mGeneralRecords.add(new RecordInfo<>(
+                    null /* serviceInfo */,
+                    new MdnsPointerRecord(
+                            revDnsAddr,
+                            0L /* receiptTimeMillis */,
+                            true /* cacheFlush */,
+                            NAME_RECORDS_TTL_MILLIS,
+                            mDeviceHostname),
+                    false /* sharedName */, false /* probing */));
+
+            mGeneralRecords.add(new RecordInfo<>(
+                    null /* serviceInfo */,
+                    new MdnsInetAddressRecord(
+                            mDeviceHostname,
+                            0L /* receiptTimeMillis */,
+                            true /* cacheFlush */,
+                            NAME_RECORDS_TTL_MILLIS,
+                            addr.getAddress()),
+                    false /* sharedName */, false /* probing */));
+        }
+    }
+
+    /**
+     * Add a service to the repository.
+     *
+     * This may remove/replace any existing service that used the name added but is exiting.
+     * @param serviceId A unique service ID.
+     * @param serviceInfo Service info to add.
+     * @return If the added service replaced another with a matching name (which was exiting), the
+     *         ID of the replaced service.
+     * @throws NameConflictException There is already a (non-exiting) service using the name.
+     */
+    public int addService(int serviceId, NsdServiceInfo serviceInfo) throws NameConflictException {
+        if (mServices.contains(serviceId)) {
+            throw new IllegalArgumentException(
+                    "Service ID must not be reused across registrations: " + serviceId);
+        }
+
+        final int existing = getServiceByName(serviceInfo.getServiceName());
+        // It's OK to re-add a service that is exiting
+        if (existing >= 0 && !mServices.get(existing).exiting) {
+            throw new NameConflictException(existing);
+        }
+
+        final ServiceRegistration registration = new ServiceRegistration(
+                mDeviceHostname, serviceInfo);
+        mServices.put(serviceId, registration);
+
+        // Remove existing exiting service
+        mServices.remove(existing);
+        return existing;
+    }
+
+    /**
+     * @return The ID of the service identified by its name, or -1 if none.
+     */
+    private int getServiceByName(@NonNull String serviceName) {
+        for (int i = 0; i < mServices.size(); i++) {
+            final ServiceRegistration registration = mServices.valueAt(i);
+            if (serviceName.equals(registration.serviceInfo.getServiceName())) {
+                return mServices.keyAt(i);
+            }
+        }
+        return -1;
+    }
+
+    private MdnsProber.ProbingInfo makeProbingInfo(int serviceId,
+            @NonNull MdnsServiceRecord srvRecord) {
+        final List<MdnsRecord> probingRecords = new ArrayList<>();
+        // Probe with cacheFlush cleared; it is set when announcing, as it was verified unique:
+        // RFC6762 10.2
+        probingRecords.add(new MdnsServiceRecord(srvRecord.getName(),
+                0L /* receiptTimeMillis */,
+                false /* cacheFlush */,
+                srvRecord.getTtl(),
+                srvRecord.getServicePriority(), srvRecord.getServiceWeight(),
+                srvRecord.getServicePort(),
+                srvRecord.getServiceHost()));
+
+        return new MdnsProber.ProbingInfo(serviceId, probingRecords);
+    }
+
+    private static List<MdnsServiceInfo.TextEntry> attrsToTextEntries(Map<String, byte[]> attrs) {
+        final List<MdnsServiceInfo.TextEntry> out = new ArrayList<>(attrs.size());
+        for (Map.Entry<String, byte[]> attr : attrs.entrySet()) {
+            out.add(new MdnsServiceInfo.TextEntry(attr.getKey(), attr.getValue()));
+        }
+        return out;
+    }
+
+    /**
+     * Mark a service in the repository as exiting.
+     * @param id ID of the service, used at registration time.
+     * @return The exit announcement to indicate the service was removed, or null if not necessary.
+     */
+    @Nullable
+    public MdnsAnnouncer.ExitAnnouncementInfo exitService(int id) {
+        final ServiceRegistration registration = mServices.get(id);
+        if (registration == null) return null;
+        if (registration.exiting) return null;
+
+        // Send exit (TTL 0) for the PTR record, if the record was sent (in particular don't send
+        // if still probing)
+        if (registration.ptrRecord.lastSentTimeMs == 0L) {
+            return null;
+        }
+
+        registration.exiting = true;
+        final MdnsPointerRecord expiredRecord = new MdnsPointerRecord(
+                registration.ptrRecord.record.getName(),
+                0L /* receiptTimeMillis */,
+                true /* cacheFlush */,
+                0L /* ttlMillis */,
+                registration.ptrRecord.record.getPointer());
+
+        // Exit should be skipped if the record is still advertised by another service, but that
+        // would be a conflict (2 service registrations with the same service name), so it would
+        // not have been allowed by the repository.
+        return new MdnsAnnouncer.ExitAnnouncementInfo(id, Collections.singletonList(expiredRecord));
+    }
+
+    public void removeService(int id) {
+        mServices.remove(id);
+    }
+
+    /**
+     * @return The number of services currently held in the repository, including exiting services.
+     */
+    public int getServicesCount() {
+        return mServices.size();
+    }
+
+    /**
+     * Remove all services from the repository
+     * @return IDs of the removed services
+     */
+    @NonNull
+    public int[] clearServices() {
+        final int[] ret = new int[mServices.size()];
+        for (int i = 0; i < mServices.size(); i++) {
+            ret[i] = mServices.keyAt(i);
+        }
+        mServices.clear();
+        return ret;
+    }
+
+    /**
+     * Info about a reply to be sent.
+     */
+    public static class ReplyInfo {
+        @NonNull
+        public final List<MdnsRecord> answers;
+        @NonNull
+        public final List<MdnsRecord> additionalAnswers;
+        public final long sendDelayMs;
+        @NonNull
+        public final InetSocketAddress destination;
+
+        public ReplyInfo(
+                @NonNull List<MdnsRecord> answers,
+                @NonNull List<MdnsRecord> additionalAnswers,
+                long sendDelayMs,
+                @NonNull InetSocketAddress destination) {
+            this.answers = answers;
+            this.additionalAnswers = additionalAnswers;
+            this.sendDelayMs = sendDelayMs;
+            this.destination = destination;
+        }
+
+        @Override
+        public String toString() {
+            return "{ReplyInfo to " + destination + ", answers: " + answers.size()
+                    + ", additionalAnswers: " + additionalAnswers.size()
+                    + ", sendDelayMs " + sendDelayMs + "}";
+        }
+    }
+
+    /**
+     * Get the reply to send to an incoming packet.
+     *
+     * @param packet The incoming packet.
+     * @param src The source address of the incoming packet.
+     */
+    @Nullable
+    public ReplyInfo getReply(MdnsPacket packet, InetSocketAddress src) {
+        final long now = SystemClock.elapsedRealtime();
+        final boolean replyUnicast = (packet.flags & MdnsConstants.QCLASS_UNICAST) != 0;
+        final ArrayList<MdnsRecord> additionalAnswerRecords = new ArrayList<>();
+        final ArrayList<RecordInfo<?>> answerInfo = new ArrayList<>();
+        for (MdnsRecord question : packet.questions) {
+            // Add answers from general records
+            addReplyFromService(question, mGeneralRecords, null /* servicePtrRecord */,
+                    null /* serviceSrvRecord */, null /* serviceTxtRecord */, replyUnicast, now,
+                    answerInfo, additionalAnswerRecords);
+
+            // Add answers from each service
+            for (int i = 0; i < mServices.size(); i++) {
+                final ServiceRegistration registration = mServices.valueAt(i);
+                if (registration.exiting) continue;
+                addReplyFromService(question, registration.allRecords, registration.ptrRecord,
+                        registration.srvRecord, registration.txtRecord, replyUnicast, now,
+                        answerInfo, additionalAnswerRecords);
+            }
+        }
+
+        if (answerInfo.size() == 0 && additionalAnswerRecords.size() == 0) {
+            return null;
+        }
+
+        // Determine the send delay
+        final long delayMs;
+        if ((packet.flags & MdnsConstants.FLAG_TRUNCATED) != 0) {
+            // RFC 6762 6.: 400-500ms delay if TC bit is set
+            delayMs = 400L + mDelayGenerator.nextInt(100);
+        } else if (packet.questions.size() > 1
+                || CollectionUtils.any(answerInfo, a -> a.isSharedName)) {
+            // 20-120ms if there may be responses from other hosts (not a fully owned
+            // name) (RFC 6762 6.), or if there are multiple questions (6.3).
+            // TODO: this should be 0 if this is a probe query ("can be distinguished from a
+            // normal query by the fact that a probe query contains a proposed record in the
+            // Authority Section that answers the question" in 6.), and the reply is for a fully
+            // owned record.
+            delayMs = 20L + mDelayGenerator.nextInt(100);
+        } else {
+            delayMs = 0L;
+        }
+
+        // Determine the send destination
+        final InetSocketAddress dest;
+        if (replyUnicast) {
+            dest = src;
+        } else if (src.getAddress() instanceof Inet4Address) {
+            dest = IPV4_ADDR;
+        } else {
+            dest = IPV6_ADDR;
+        }
+
+        // Build the list of answer records from their RecordInfo
+        final ArrayList<MdnsRecord> answerRecords = new ArrayList<>(answerInfo.size());
+        for (RecordInfo<?> info : answerInfo) {
+            // TODO: consider actual packet send delay after response aggregation
+            info.lastSentTimeMs = now + delayMs;
+            if (!replyUnicast) {
+                info.lastAdvertisedTimeMs = info.lastSentTimeMs;
+            }
+            answerRecords.add(info.record);
+        }
+
+        return new ReplyInfo(answerRecords, additionalAnswerRecords, delayMs, dest);
+    }
+
+    /**
+     * Add answers and additional answers for a question, from a ServiceRegistration.
+     */
+    private void addReplyFromService(@NonNull MdnsRecord question,
+            @NonNull List<RecordInfo<?>> serviceRecords,
+            @Nullable RecordInfo<MdnsPointerRecord> servicePtrRecord,
+            @Nullable RecordInfo<MdnsServiceRecord> serviceSrvRecord,
+            @Nullable RecordInfo<MdnsTextRecord> serviceTxtRecord,
+            boolean replyUnicast, long now, @NonNull List<RecordInfo<?>> answerInfo,
+            @NonNull List<MdnsRecord> additionalAnswerRecords) {
+        boolean hasDnsSdPtrRecordAnswer = false;
+        boolean hasDnsSdSrvRecordAnswer = false;
+        boolean hasFullyOwnedNameMatch = false;
+        boolean hasKnownAnswer = false;
+
+        final int answersStartIndex = answerInfo.size();
+        for (RecordInfo<?> info : serviceRecords) {
+            if (info.isProbing) continue;
+
+             /* RFC6762 6.: the record name must match the question name, the record rrtype
+             must match the question qtype unless the qtype is "ANY" (255) or the rrtype is
+             "CNAME" (5), and the record rrclass must match the question qclass unless the
+             qclass is "ANY" (255) */
+            if (!Arrays.equals(info.record.getName(), question.getName())) continue;
+            hasFullyOwnedNameMatch |= !info.isSharedName;
+
+            // The repository does not store CNAME records
+            if (question.getType() != MdnsRecord.TYPE_ANY
+                    && question.getType() != info.record.getType()) {
+                continue;
+            }
+            if (question.getRecordClass() != MdnsRecord.CLASS_ANY
+                    && question.getRecordClass() != info.record.getRecordClass()) {
+                continue;
+            }
+
+            hasKnownAnswer = true;
+            hasDnsSdPtrRecordAnswer |= (info == servicePtrRecord);
+            hasDnsSdSrvRecordAnswer |= (info == serviceSrvRecord);
+
+            // 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 (!replyUnicast && info.lastAdvertisedTimeMs > 0L
+                    && now - info.lastAdvertisedTimeMs < MIN_MULTICAST_REPLY_INTERVAL_MS) {
+                continue;
+            }
+
+            // TODO: Don't reply if in known answers of the querier (7.1) if TTL is > half
+
+            answerInfo.add(info);
+        }
+
+        // RFC6762 6.1:
+        // "Any time a responder receives a query for a name for which it has verified exclusive
+        // ownership, for a type for which that name has no records, the responder MUST [...]
+        // respond asserting the nonexistence of that record"
+        if (hasFullyOwnedNameMatch && !hasKnownAnswer) {
+            additionalAnswerRecords.add(new MdnsNsecRecord(
+                    question.getName(),
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    // TODO: RFC6762 6.1: "In general, the TTL given for an NSEC record SHOULD
+                    // be the same as the TTL that the record would have had, had it existed."
+                    NAME_RECORDS_TTL_MILLIS,
+                    question.getName(),
+                    new int[] { question.getType() }));
+        }
+
+        // No more records to add if no answer
+        if (answerInfo.size() == answersStartIndex) return;
+
+        final List<RecordInfo<?>> additionalAnswerInfo = new ArrayList<>();
+        // RFC6763 12.1: if including PTR record, include the SRV and TXT records it names
+        if (hasDnsSdPtrRecordAnswer) {
+            if (serviceTxtRecord != null) {
+                additionalAnswerInfo.add(serviceTxtRecord);
+            }
+            if (serviceSrvRecord != null) {
+                additionalAnswerInfo.add(serviceSrvRecord);
+            }
+        }
+
+        // RFC6763 12.1&.2: if including PTR or SRV record, include the address records it names
+        if (hasDnsSdPtrRecordAnswer || hasDnsSdSrvRecordAnswer) {
+            for (RecordInfo<?> record : mGeneralRecords) {
+                if (record.record instanceof MdnsInetAddressRecord) {
+                    additionalAnswerInfo.add(record);
+                }
+            }
+        }
+
+        for (RecordInfo<?> info : additionalAnswerInfo) {
+            additionalAnswerRecords.add(info.record);
+        }
+
+        // RFC6762 6.1: negative responses
+        addNsecRecordsForUniqueNames(additionalAnswerRecords,
+                answerInfo.listIterator(answersStartIndex),
+                additionalAnswerInfo.listIterator());
+    }
+
+    /**
+     * Add NSEC records indicating that the response records are unique.
+     *
+     * Following RFC6762 6.1:
+     * "On receipt of a question for a particular name, rrtype, and rrclass, for which a responder
+     * does have one or more unique answers, the responder MAY also include an NSEC record in the
+     * Additional Record Section indicating the nonexistence of other rrtypes for that name and
+     * rrclass."
+     * @param destinationList List to add the NSEC records to.
+     * @param answerRecords Lists of answered records based on which to add NSEC records (typically
+     *                      answer and additionalAnswer sections)
+     */
+    @SafeVarargs
+    private static void addNsecRecordsForUniqueNames(
+            List<MdnsRecord> destinationList,
+            Iterator<RecordInfo<?>>... answerRecords) {
+        // Group unique records by name. Use a TreeMap with comparator as arrays don't implement
+        // equals / hashCode.
+        final Map<String[], List<MdnsRecord>> nsecByName = new TreeMap<>(Arrays::compare);
+        // But keep the list of names in added order, otherwise records would be sorted in
+        // alphabetical order instead of the order of the original records, which would look like
+        // inconsistent behavior depending on service name.
+        final List<String[]> namesInAddedOrder = new ArrayList<>();
+        for (Iterator<RecordInfo<?>> answers : answerRecords) {
+            addNonSharedRecordsToMap(answers, nsecByName, namesInAddedOrder);
+        }
+
+        for (String[] nsecName : namesInAddedOrder) {
+            final List<MdnsRecord> entryRecords = nsecByName.get(nsecName);
+            long minTtl = Long.MAX_VALUE;
+            final Set<Integer> types = new ArraySet<>(entryRecords.size());
+            for (MdnsRecord record : entryRecords) {
+                if (minTtl > record.getTtl()) minTtl = record.getTtl();
+                types.add(record.getType());
+            }
+
+            destinationList.add(new MdnsNsecRecord(
+                    nsecName,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    minTtl,
+                    nsecName,
+                    CollectionUtils.toIntArray(types)));
+        }
+    }
+
+    /**
+     * Add non-shared records to a map listing them by record name, and to a list of names that
+     * remembers the adding order.
+     *
+     * In the destination map records are grouped by name; so the map has one key per record name,
+     * and the values are the lists of different records that share the same name.
+     * @param records Records to scan.
+     * @param dest Map to add the records to.
+     * @param namesInAddedOrder List of names to add the names in order, keeping the first
+     *                          occurrence of each name.
+     */
+    private static void addNonSharedRecordsToMap(
+            Iterator<RecordInfo<?>> records,
+            Map<String[], List<MdnsRecord>> dest,
+            List<String[]> namesInAddedOrder) {
+        while (records.hasNext()) {
+            final RecordInfo<?> record = records.next();
+            if (record.isSharedName) continue;
+            final List<MdnsRecord> recordsForName = dest.computeIfAbsent(record.record.name,
+                    key -> {
+                        namesInAddedOrder.add(key);
+                        return new ArrayList<>();
+                    });
+            recordsForName.add(record.record);
+        }
+    }
+
+    /**
+     * 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 {
+
+        final ServiceRegistration registration = mServices.get(probeSuccessInfo.getServiceId());
+        if (registration == null) throw new IOException(
+                "Service is not registered: " + probeSuccessInfo.getServiceId());
+        registration.setProbing(false);
+
+        final ArrayList<MdnsRecord> answers = new ArrayList<>();
+        final ArrayList<MdnsRecord> additionalAnswers = new ArrayList<>();
+
+        // Interface address records in general records
+        for (RecordInfo<?> record : mGeneralRecords) {
+            answers.add(record.record);
+        }
+
+        // All service records
+        for (RecordInfo<?> info : registration.allRecords) {
+            answers.add(info.record);
+        }
+
+        addNsecRecordsForUniqueNames(additionalAnswers,
+                mGeneralRecords.iterator(), registration.allRecords.iterator());
+
+        return new MdnsAnnouncer.AnnouncementInfo(probeSuccessInfo.getServiceId(),
+                answers, additionalAnswers);
+    }
+
+    /**
+     * Get the service IDs of services conflicting with a received packet.
+     */
+    public Set<Integer> getConflictingServices(MdnsPacket packet) {
+        // Avoid allocating a new set for each incoming packet: use an empty set by default.
+        Set<Integer> conflicting = Collections.emptySet();
+        for (MdnsRecord record : packet.answers) {
+            for (int i = 0; i < mServices.size(); i++) {
+                final ServiceRegistration registration = mServices.valueAt(i);
+                if (registration.exiting) continue;
+
+                // Only look for conflicts in service name, as a different service name can be used
+                // if there is a conflict, but there is nothing actionable if any other conflict
+                // happens. In fact probing is only done for the service name in the SRV record.
+                // This means only SRV and TXT records need to be checked.
+                final RecordInfo<MdnsServiceRecord> srvRecord = registration.srvRecord;
+                if (!Arrays.equals(record.getName(), srvRecord.record.getName())) continue;
+
+                // 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)) {
+                        continue;
+                    }
+                }
+
+                if (record instanceof MdnsTextRecord) {
+                    final MdnsTextRecord local = registration.txtRecord.record;
+                    final MdnsTextRecord other = (MdnsTextRecord) record;
+                    if (Objects.equals(local, other)) {
+                        continue;
+                    }
+                }
+
+                if (conflicting.size() == 0) {
+                    // Conflict was found: use a mutable set
+                    conflicting = new ArraySet<>();
+                }
+                final int serviceId = mServices.keyAt(i);
+                conflicting.add(serviceId);
+            }
+        }
+
+        return conflicting;
+    }
+
+    /**
+     * (Re)set a service to the probing state.
+     * @return The {@link MdnsProber.ProbingInfo} to send for probing.
+     */
+    @Nullable
+    public MdnsProber.ProbingInfo setServiceProbing(int serviceId) {
+        final ServiceRegistration registration = mServices.get(serviceId);
+        if (registration == null) return null;
+
+        registration.setProbing(true);
+        return makeProbingInfo(serviceId, registration.srvRecord.record);
+    }
+
+    /**
+     * Indicates whether a given service is in probing state.
+     */
+    public boolean isProbing(int serviceId) {
+        final ServiceRegistration registration = mServices.get(serviceId);
+        if (registration == null) return false;
+
+        return registration.srvRecord.isProbing;
+    }
+
+    /**
+     * Return whether the repository has an active (non-exiting) service for the given ID.
+     */
+    public boolean hasActiveService(int serviceId) {
+        final ServiceRegistration registration = mServices.get(serviceId);
+        if (registration == null) return false;
+
+        return !registration.exiting;
+    }
+
+    /**
+     * Rename a service to the newly provided info, following a conflict.
+     *
+     * If the specified service does not exist, this returns null.
+     */
+    @Nullable
+    public MdnsProber.ProbingInfo renameServiceForConflict(int serviceId, NsdServiceInfo newInfo) {
+        if (!mServices.contains(serviceId)) return null;
+
+        final ServiceRegistration newService = new ServiceRegistration(
+                mDeviceHostname, newInfo);
+        mServices.put(serviceId, newService);
+        return makeProbingInfo(serviceId, newService.srvRecord.record);
+    }
+
+    /**
+     * Called when {@link MdnsAdvertiser} sent an advertisement for the given service.
+     */
+    public void onAdvertisementSent(int serviceId) {
+        final ServiceRegistration registration = mServices.get(serviceId);
+        if (registration == null) return;
+
+        final long now = SystemClock.elapsedRealtime();
+        for (RecordInfo<?> record : registration.allRecords) {
+            record.lastSentTimeMs = now;
+            record.lastAdvertisedTimeMs = now;
+        }
+    }
+
+    /**
+     * Compute:
+     * 2001:db8::1 --> 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.0.1.0.0.2.ip6.arpa
+     *
+     * Or:
+     * 192.0.2.123 --> 123.2.0.192.in-addr.arpa
+     */
+    @VisibleForTesting
+    public static String[] getReverseDnsAddress(@NonNull InetAddress addr) {
+        // xxx.xxx.xxx.xxx.in-addr.arpa (up to 28 characters)
+        // or 32 hex characters separated by dots + .ip6.arpa
+        final byte[] addrBytes = addr.getAddress();
+        final List<String> out = new ArrayList<>();
+        if (addr instanceof Inet4Address) {
+            for (int i = addrBytes.length - 1; i >= 0; i--) {
+                out.add(String.valueOf(Byte.toUnsignedInt(addrBytes[i])));
+            }
+            out.add("in-addr");
+        } else {
+            final String hexAddr = HexDump.toHexString(addrBytes);
+
+            for (int i = hexAddr.length() - 1; i >= 0; i--) {
+                out.add(String.valueOf(hexAddr.charAt(i)));
+            }
+            out.add("ip6");
+        }
+        out.add("arpa");
+
+        return out.toArray(new String[0]);
+    }
+
+    private static String[] splitFullyQualifiedName(
+            @NonNull NsdServiceInfo info, @NonNull String[] serviceType) {
+        final String[] split = new String[serviceType.length + 1];
+        split[0] = info.getServiceName();
+        System.arraycopy(serviceType, 0, split, 1, serviceType.length);
+
+        return split;
+    }
+
+    private static String[] splitServiceType(@NonNull NsdServiceInfo info) {
+        // String.split(pattern, 0) removes trailing empty strings, which would appear when
+        // splitting "domain.name." (with a dot a the end), so this is what is needed here.
+        final String[] split = info.getServiceType().split("\\.", 0);
+        final String[] type = new String[split.length + 1];
+        System.arraycopy(split, 0, type, 0, split.length);
+        type[split.length] = LOCAL_TLD;
+
+        return type;
+    }
+}
diff --git a/service-t/src/com/android/server/mdns/MdnsReplySender.java b/service-t/src/com/android/server/mdns/MdnsReplySender.java
new file mode 100644
index 0000000..f1389ca
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsReplySender.java
@@ -0,0 +1,153 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import static com.android.server.connectivity.mdns.MdnsSocketProvider.ensureRunningOnHandlerThread;
+
+import android.annotation.NonNull;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.util.Log;
+
+import com.android.server.connectivity.mdns.MdnsRecordRepository.ReplyInfo;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetSocketAddress;
+import java.net.MulticastSocket;
+import java.util.Collections;
+
+/**
+ * A class that handles sending mDNS replies to a {@link MulticastSocket}, possibly queueing them
+ * to be sent after some delay.
+ *
+ * TODO: implement sending after a delay, combining queued replies and duplicate answer suppression
+ */
+public class MdnsReplySender {
+    private static final boolean DBG = MdnsAdvertiser.DBG;
+    private static final int MSG_SEND = 1;
+
+    private final String mLogTag;
+    @NonNull
+    private final MdnsInterfaceSocket mSocket;
+    @NonNull
+    private final Handler mHandler;
+    @NonNull
+    private final byte[] mPacketCreationBuffer;
+
+    public MdnsReplySender(@NonNull String interfaceTag, @NonNull Looper looper,
+            @NonNull MdnsInterfaceSocket socket, @NonNull byte[] packetCreationBuffer) {
+        mHandler = new SendHandler(looper);
+        mLogTag = MdnsReplySender.class.getSimpleName() + "/" +  interfaceTag;
+        mSocket = socket;
+        mPacketCreationBuffer = packetCreationBuffer;
+    }
+
+    /**
+     * Queue a reply to be sent when its send delay expires.
+     */
+    public void queueReply(@NonNull ReplyInfo reply) {
+        ensureRunningOnHandlerThread(mHandler);
+        // TODO: implement response aggregation (RFC 6762 6.4)
+        mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_SEND, reply), reply.sendDelayMs);
+
+        if (DBG) {
+            Log.v(mLogTag, "Scheduling " + reply);
+        }
+    }
+
+    /**
+     * Send a packet immediately.
+     *
+     * Must be called on the looper thread used by the {@link MdnsReplySender}.
+     */
+    public void sendNow(@NonNull MdnsPacket packet, @NonNull InetSocketAddress destination)
+            throws IOException {
+        ensureRunningOnHandlerThread(mHandler);
+        if (!((destination.getAddress() instanceof Inet6Address && mSocket.hasJoinedIpv6())
+                || (destination.getAddress() instanceof Inet4Address && mSocket.hasJoinedIpv4()))) {
+            // Skip sending if the socket has not joined the v4/v6 group (there was no address)
+            return;
+        }
+
+        // TODO: support packets over size (send in multiple packets with TC bit set)
+        final MdnsPacketWriter writer = new MdnsPacketWriter(mPacketCreationBuffer);
+
+        writer.writeUInt16(0); // Transaction ID (advertisement: 0)
+        writer.writeUInt16(packet.flags); // Response, authoritative (rfc6762 18.4)
+        writer.writeUInt16(packet.questions.size()); // questions count
+        writer.writeUInt16(packet.answers.size()); // answers count
+        writer.writeUInt16(packet.authorityRecords.size()); // authority entries count
+        writer.writeUInt16(packet.additionalRecords.size()); // additional records count
+
+        for (MdnsRecord record : packet.questions) {
+            // Questions do not have TTL or data
+            record.writeHeaderFields(writer);
+        }
+        for (MdnsRecord record : packet.answers) {
+            record.write(writer, 0L);
+        }
+        for (MdnsRecord record : packet.authorityRecords) {
+            record.write(writer, 0L);
+        }
+        for (MdnsRecord record : packet.additionalRecords) {
+            record.write(writer, 0L);
+        }
+
+        final int len = writer.getWritePosition();
+        final byte[] outBuffer = new byte[len];
+        System.arraycopy(mPacketCreationBuffer, 0, outBuffer, 0, len);
+
+        mSocket.send(new DatagramPacket(outBuffer, 0, len, destination));
+    }
+
+    /**
+     * Cancel all pending sends.
+     */
+    public void cancelAll() {
+        ensureRunningOnHandlerThread(mHandler);
+        mHandler.removeMessages(MSG_SEND);
+    }
+
+    private class SendHandler extends Handler {
+        SendHandler(@NonNull Looper looper) {
+            super(looper);
+        }
+
+        @Override
+        public void handleMessage(@NonNull Message msg) {
+            final ReplyInfo replyInfo = (ReplyInfo) msg.obj;
+            if (DBG) Log.v(mLogTag, "Sending " + replyInfo);
+
+            final int flags = 0x8400; // Response, authoritative (rfc6762 18.4)
+            final MdnsPacket packet = new MdnsPacket(flags,
+                    Collections.emptyList() /* questions */,
+                    replyInfo.answers,
+                    Collections.emptyList() /* authorityRecords */,
+                    replyInfo.additionalAnswers);
+
+            try {
+                sendNow(packet, replyInfo.destination);
+            } catch (IOException e) {
+                Log.e(mLogTag, "Error sending MDNS response", e);
+            }
+        }
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsResponse.java b/service-t/src/com/android/server/mdns/MdnsResponse.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsResponse.java
rename to service-t/src/com/android/server/mdns/MdnsResponse.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsResponseDecoder.java b/service-t/src/com/android/server/mdns/MdnsResponseDecoder.java
similarity index 66%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsResponseDecoder.java
rename to service-t/src/com/android/server/mdns/MdnsResponseDecoder.java
index 7cf84f6..82da2e4 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsResponseDecoder.java
+++ b/service-t/src/com/android/server/mdns/MdnsResponseDecoder.java
@@ -24,11 +24,9 @@
 import com.android.server.connectivity.mdns.util.MdnsLogger;
 
 import java.io.EOFException;
-import java.io.IOException;
 import java.net.DatagramPacket;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.LinkedList;
 import java.util.List;
 
 /** A class that decodes mDNS responses from UDP packets. */
@@ -48,12 +46,6 @@
         this.serviceType = serviceType;
     }
 
-    private static void skipMdnsRecord(MdnsPacketReader reader) throws IOException {
-        reader.skip(2 + 4); // skip the class and TTL
-        int dataLength = reader.readUInt16();
-        reader.skip(dataLength);
-    }
-
     private static MdnsResponse findResponseWithPointer(
             List<MdnsResponse> responses, String[] pointer) {
         if (responses != null) {
@@ -101,9 +93,26 @@
      */
     public int decode(@NonNull DatagramPacket packet, @NonNull List<MdnsResponse> responses,
             int interfaceIndex, @Nullable Network network) {
-        MdnsPacketReader reader = new MdnsPacketReader(packet);
+        return decode(packet.getData(), packet.getLength(), responses, interfaceIndex, network);
+    }
 
-        List<MdnsRecord> records;
+    /**
+     * Decodes all mDNS responses for the desired service type from a packet. The class does not
+     * check
+     * the responses for completeness; the caller should do that.
+     *
+     * @param recvbuf The received data buffer to read from.
+     * @param length The length of received data buffer.
+     * @param interfaceIndex the network interface index (or {@link
+     *     MdnsSocket#INTERFACE_INDEX_UNSPECIFIED} if not known) at which the packet was received
+     * @param network the network at which the packet was received, or null if it is unknown.
+     * @return A list of mDNS responses, or null if the packet contained no appropriate responses.
+     */
+    public int decode(@NonNull byte[] recvbuf, int length, @NonNull List<MdnsResponse> responses,
+            int interfaceIndex, @Nullable Network network) {
+        MdnsPacketReader reader = new MdnsPacketReader(recvbuf, length);
+
+        final MdnsPacket mdnsPacket;
         try {
             reader.readUInt16(); // transaction ID (not used)
             int flags = reader.readUInt16();
@@ -111,111 +120,25 @@
                 return MdnsResponseErrorCode.ERROR_NOT_RESPONSE_MESSAGE;
             }
 
-            int numQuestions = reader.readUInt16();
-            int numAnswers = reader.readUInt16();
-            int numAuthority = reader.readUInt16();
-            int numRecords = reader.readUInt16();
-
-            LOGGER.log(String.format(
-                    "num questions: %d, num answers: %d, num authority: %d, num records: %d",
-                    numQuestions, numAnswers, numAuthority, numRecords));
-
-            if (numAnswers < 1) {
+            mdnsPacket = MdnsPacket.parseRecordsSection(reader, flags);
+            if (mdnsPacket.answers.size() < 1) {
                 return MdnsResponseErrorCode.ERROR_NO_ANSWERS;
             }
-
-            records = new LinkedList<>();
-
-            for (int i = 0; i < (numAnswers + numAuthority + numRecords); ++i) {
-                String[] name;
-                try {
-                    name = reader.readLabels();
-                } catch (IOException e) {
-                    LOGGER.e("Failed to read labels from mDNS response.", e);
-                    return MdnsResponseErrorCode.ERROR_READING_RECORD_NAME;
-                }
-                int type = reader.readUInt16();
-
-                switch (type) {
-                    case MdnsRecord.TYPE_A: {
-                        try {
-                            records.add(new MdnsInetAddressRecord(name, MdnsRecord.TYPE_A, reader));
-                        } catch (IOException e) {
-                            LOGGER.e("Failed to read A record from mDNS response.", e);
-                            return MdnsResponseErrorCode.ERROR_READING_A_RDATA;
-                        }
-                        break;
-                    }
-
-                    case MdnsRecord.TYPE_AAAA: {
-                        try {
-                            // AAAA should only contain the IPv6 address.
-                            MdnsInetAddressRecord record =
-                                    new MdnsInetAddressRecord(name, MdnsRecord.TYPE_AAAA, reader);
-                            if (record.getInet6Address() != null) {
-                                records.add(record);
-                            }
-                        } catch (IOException e) {
-                            LOGGER.e("Failed to read AAAA record from mDNS response.", e);
-                            return MdnsResponseErrorCode.ERROR_READING_AAAA_RDATA;
-                        }
-                        break;
-                    }
-
-                    case MdnsRecord.TYPE_PTR: {
-                        try {
-                            records.add(new MdnsPointerRecord(name, reader));
-                        } catch (IOException e) {
-                            LOGGER.e("Failed to read PTR record from mDNS response.", e);
-                            return MdnsResponseErrorCode.ERROR_READING_PTR_RDATA;
-                        }
-                        break;
-                    }
-
-                    case MdnsRecord.TYPE_SRV: {
-                        if (name.length == 4) {
-                            try {
-                                records.add(new MdnsServiceRecord(name, reader));
-                            } catch (IOException e) {
-                                LOGGER.e("Failed to read SRV record from mDNS response.", e);
-                                return MdnsResponseErrorCode.ERROR_READING_SRV_RDATA;
-                            }
-                        } else {
-                            try {
-                                skipMdnsRecord(reader);
-                            } catch (IOException e) {
-                                LOGGER.e("Failed to skip SVR record from mDNS response.", e);
-                                return MdnsResponseErrorCode.ERROR_SKIPPING_SRV_RDATA;
-                            }
-                        }
-                        break;
-                    }
-
-                    case MdnsRecord.TYPE_TXT: {
-                        try {
-                            records.add(new MdnsTextRecord(name, reader));
-                        } catch (IOException e) {
-                            LOGGER.e("Failed to read TXT record from mDNS response.", e);
-                            return MdnsResponseErrorCode.ERROR_READING_TXT_RDATA;
-                        }
-                        break;
-                    }
-
-                    default: {
-                        try {
-                            skipMdnsRecord(reader);
-                        } catch (IOException e) {
-                            LOGGER.e("Failed to skip mDNS record.", e);
-                            return MdnsResponseErrorCode.ERROR_SKIPPING_UNKNOWN_RECORD;
-                        }
-                    }
-                }
-            }
         } catch (EOFException e) {
             LOGGER.e("Reached the end of the mDNS response unexpectedly.", e);
             return MdnsResponseErrorCode.ERROR_END_OF_FILE;
+        } catch (MdnsPacket.ParseException e) {
+            LOGGER.e(e.getMessage(), e);
+            return e.code;
         }
 
+        final ArrayList<MdnsRecord> records = new ArrayList<>(
+                mdnsPacket.questions.size() + mdnsPacket.answers.size()
+                        + mdnsPacket.authorityRecords.size() + mdnsPacket.additionalRecords.size());
+        records.addAll(mdnsPacket.answers);
+        records.addAll(mdnsPacket.authorityRecords);
+        records.addAll(mdnsPacket.additionalRecords);
+
         // The response records are structured in a hierarchy, where some records reference
         // others, as follows:
         //
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java b/service-t/src/com/android/server/mdns/MdnsResponseErrorCode.java
similarity index 92%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java
rename to service-t/src/com/android/server/mdns/MdnsResponseErrorCode.java
index fcf9058..73a7e3a 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsResponseErrorCode.java
+++ b/service-t/src/com/android/server/mdns/MdnsResponseErrorCode.java
@@ -35,4 +35,6 @@
     public static final int ERROR_READING_TXT_RDATA = 10;
     public static final int ERROR_SKIPPING_UNKNOWN_RECORD = 11;
     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;
 }
\ No newline at end of file
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsSearchOptions.java b/service-t/src/com/android/server/mdns/MdnsSearchOptions.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsSearchOptions.java
rename to service-t/src/com/android/server/mdns/MdnsSearchOptions.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsServiceBrowserListener.java b/service-t/src/com/android/server/mdns/MdnsServiceBrowserListener.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsServiceBrowserListener.java
rename to service-t/src/com/android/server/mdns/MdnsServiceBrowserListener.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsServiceInfo.java b/service-t/src/com/android/server/mdns/MdnsServiceInfo.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsServiceInfo.java
rename to service-t/src/com/android/server/mdns/MdnsServiceInfo.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsServiceRecord.java b/service-t/src/com/android/server/mdns/MdnsServiceRecord.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsServiceRecord.java
rename to service-t/src/com/android/server/mdns/MdnsServiceRecord.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java b/service-t/src/com/android/server/mdns/MdnsServiceTypeClient.java
similarity index 96%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
rename to service-t/src/com/android/server/mdns/MdnsServiceTypeClient.java
index 538f376..d26fbdb 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
+++ b/service-t/src/com/android/server/mdns/MdnsServiceTypeClient.java
@@ -20,6 +20,7 @@
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
+import android.net.Network;
 import android.os.SystemClock;
 import android.text.TextUtils;
 import android.util.ArraySet;
@@ -52,7 +53,7 @@
 
     private final String serviceType;
     private final String[] serviceTypeLabels;
-    private final MdnsSocketClient socketClient;
+    private final MdnsSocketClientBase socketClient;
     private final ScheduledExecutorService executor;
     private final Object lock = new Object();
     private final Set<MdnsServiceBrowserListener> listeners = new ArraySet<>();
@@ -77,11 +78,11 @@
      * Constructor of {@link MdnsServiceTypeClient}.
      *
      * @param socketClient Sends and receives mDNS packet.
-     * @param executor     A {@link ScheduledExecutorService} used to schedule query tasks.
+     * @param executor         A {@link ScheduledExecutorService} used to schedule query tasks.
      */
     public MdnsServiceTypeClient(
             @NonNull String serviceType,
-            @NonNull MdnsSocketClient socketClient,
+            @NonNull MdnsSocketClientBase socketClient,
             @NonNull ScheduledExecutorService executor) {
         this.serviceType = serviceType;
         this.socketClient = socketClient;
@@ -169,7 +170,8 @@
                                     new QueryTaskConfig(
                                             searchOptions.getSubtypes(),
                                             searchOptions.isPassiveMode(),
-                                            ++currentSessionId)));
+                                            ++currentSessionId,
+                                            searchOptions.getNetwork())));
         }
     }
 
@@ -322,9 +324,10 @@
         private int burstCounter;
         private int timeToRunNextTaskInMs;
         private boolean isFirstBurst;
+        @Nullable private final Network network;
 
         QueryTaskConfig(@NonNull Collection<String> subtypes, boolean usePassiveMode,
-                long sessionId) {
+                long sessionId, @Nullable Network network) {
             this.usePassiveMode = usePassiveMode;
             this.subtypes = new ArrayList<>(subtypes);
             this.queriesPerBurst = QUERIES_PER_BURST;
@@ -346,6 +349,7 @@
                 // doubles until it maxes out at TIME_BETWEEN_BURSTS_MS.
                 this.timeBetweenBurstsInMs = INITIAL_TIME_BETWEEN_BURSTS_MS;
             }
+            this.network = network;
         }
 
         QueryTaskConfig getConfigForNextRun() {
@@ -405,7 +409,8 @@
                                 serviceType,
                                 config.subtypes,
                                 config.expectUnicastResponse,
-                                config.transactionId)
+                                config.transactionId,
+                                config.network)
                                 .call();
             } catch (RuntimeException e) {
                 LOGGER.e(String.format("Failed to run EnqueueMdnsQueryCallable for subtype: %s",
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsSocket.java b/service-t/src/com/android/server/mdns/MdnsSocket.java
similarity index 97%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsSocket.java
rename to service-t/src/com/android/server/mdns/MdnsSocket.java
index 64c4495..5fd1354 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsSocket.java
+++ b/service-t/src/com/android/server/mdns/MdnsSocket.java
@@ -40,9 +40,9 @@
     private static final MdnsLogger LOGGER = new MdnsLogger("MdnsSocket");
 
     static final int INTERFACE_INDEX_UNSPECIFIED = -1;
-    protected static final InetSocketAddress MULTICAST_IPV4_ADDRESS =
+    public static final InetSocketAddress MULTICAST_IPV4_ADDRESS =
             new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), MdnsConstants.MDNS_PORT);
-    protected static final InetSocketAddress MULTICAST_IPV6_ADDRESS =
+    public static final InetSocketAddress MULTICAST_IPV6_ADDRESS =
             new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT);
     private final MulticastNetworkInterfaceProvider multicastNetworkInterfaceProvider;
     private final MulticastSocket multicastSocket;
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsSocketClient.java b/service-t/src/com/android/server/mdns/MdnsSocketClient.java
similarity index 98%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsSocketClient.java
rename to service-t/src/com/android/server/mdns/MdnsSocketClient.java
index 6a321d1..907687e 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsSocketClient.java
+++ b/service-t/src/com/android/server/mdns/MdnsSocketClient.java
@@ -16,6 +16,8 @@
 
 package com.android.server.connectivity.mdns;
 
+import static com.android.server.connectivity.mdns.MdnsSocketClientBase.Callback;
+
 import android.Manifest.permission;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
@@ -47,7 +49,7 @@
  *
  * <p>See https://tools.ietf.org/html/rfc6763 (namely sections 4 and 5).
  */
-public class MdnsSocketClient {
+public class MdnsSocketClient implements MdnsSocketClientBase {
 
     private static final String TAG = "MdnsClient";
     // TODO: The following values are copied from cast module. We need to think about the
@@ -116,11 +118,13 @@
         }
     }
 
+    @Override
     public synchronized void setCallback(@Nullable Callback callback) {
         this.callback = callback;
     }
 
     @RequiresPermission(permission.CHANGE_WIFI_MULTICAST_STATE)
+    @Override
     public synchronized void startDiscovery() throws IOException {
         if (multicastSocket != null) {
             LOGGER.w("Discovery is already in progress.");
@@ -160,6 +164,7 @@
     }
 
     @RequiresPermission(permission.CHANGE_WIFI_MULTICAST_STATE)
+    @Override
     public void stopDiscovery() {
         LOGGER.log("Stop discovery.");
         if (multicastSocket == null && unicastSocket == null) {
@@ -195,11 +200,13 @@
     }
 
     /** Sends a mDNS request packet that asks for multicast response. */
+    @Override
     public void sendMulticastPacket(@NonNull DatagramPacket packet) {
         sendMdnsPacket(packet, multicastPacketQueue);
     }
 
     /** Sends a mDNS request packet that asks for unicast response. */
+    @Override
     public void sendUnicastPacket(DatagramPacket packet) {
         if (useSeparateSocketForUnicast) {
             sendMdnsPacket(packet, unicastPacketQueue);
@@ -512,11 +519,4 @@
     public boolean isOnIPv6OnlyNetwork() {
         return multicastSocket != null && multicastSocket.isOnIPv6OnlyNetwork();
     }
-
-    /** Callback for {@link MdnsSocketClient}. */
-    public interface Callback {
-        void onResponseReceived(@NonNull MdnsResponse response);
-
-        void onFailedToParseMdnsResponse(int receivedPacketNumber, int errorCode);
-    }
 }
\ No newline at end of file
diff --git a/service-t/src/com/android/server/mdns/MdnsSocketClientBase.java b/service-t/src/com/android/server/mdns/MdnsSocketClientBase.java
new file mode 100644
index 0000000..23504a0
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MdnsSocketClientBase.java
@@ -0,0 +1,80 @@
+/*
+ * 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.
+ */
+
+package com.android.server.connectivity.mdns;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.net.Network;
+
+import java.io.IOException;
+import java.net.DatagramPacket;
+
+/**
+ * Base class for multicast socket client.
+ *
+ * @hide
+ */
+public interface MdnsSocketClientBase {
+    /*** Start mDns discovery on given network. */
+    default void startDiscovery() throws IOException { }
+
+    /*** Stop mDns discovery. */
+    default void stopDiscovery() { }
+
+    /*** Set callback for receiving mDns response */
+    void setCallback(@Nullable Callback callback);
+
+    /*** Sends a mDNS request packet that asks for multicast response. */
+    void sendMulticastPacket(@NonNull DatagramPacket packet);
+
+    /**
+     * Sends a mDNS request packet via given network that asks for multicast response. Null network
+     * means sending packet via all networks.
+     */
+    default void sendMulticastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
+        throw new UnsupportedOperationException(
+                "This socket client doesn't support per-network sending");
+    }
+
+    /*** Sends a mDNS request packet that asks for unicast response. */
+    void sendUnicastPacket(@NonNull DatagramPacket packet);
+
+    /**
+     * Sends a mDNS request packet via given network that asks for unicast response. Null network
+     * means sending packet via all networks.
+     */
+    default void sendUnicastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
+        throw new UnsupportedOperationException(
+                "This socket client doesn't support per-network sending");
+    }
+
+    /*** Notify that the given network is requested for mdns discovery / resolution */
+    default void notifyNetworkRequested(@NonNull MdnsServiceBrowserListener listener,
+            @Nullable Network network) { }
+
+    /*** Notify that the network is unrequested */
+    default void notifyNetworkUnrequested(@NonNull MdnsServiceBrowserListener listener) { }
+
+    /*** Callback for mdns response  */
+    interface Callback {
+        /*** Receive a mdns response */
+        void onResponseReceived(@NonNull MdnsResponse response);
+
+        /*** Parse a mdns response failed */
+        void onFailedToParseMdnsResponse(int receivedPacketNumber, int errorCode);
+    }
+}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsSocketProvider.java b/service-t/src/com/android/server/mdns/MdnsSocketProvider.java
similarity index 85%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsSocketProvider.java
rename to service-t/src/com/android/server/mdns/MdnsSocketProvider.java
index b8c324e..9298852 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsSocketProvider.java
+++ b/service-t/src/com/android/server/mdns/MdnsSocketProvider.java
@@ -35,6 +35,7 @@
 import android.util.Log;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.LinkPropertiesUtils.CompareResult;
 import com.android.net.module.util.ip.NetlinkMonitor;
 import com.android.net.module.util.netlink.NetlinkConstants;
@@ -42,7 +43,6 @@
 import com.android.server.connectivity.mdns.util.MdnsLogger;
 
 import java.io.IOException;
-import java.net.InterfaceAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.util.ArrayList;
@@ -60,8 +60,13 @@
 public class MdnsSocketProvider {
     private static final String TAG = MdnsSocketProvider.class.getSimpleName();
     private static final boolean DBG = MdnsDiscoveryManager.DBG;
+    // This buffer size matches what MdnsSocketClient uses currently.
+    // But 1440 should generally be enough because of standard Ethernet.
+    // Note: mdnsresponder mDNSEmbeddedAPI.h uses 8940 for Ethernet jumbo frames.
+    private static final int READ_BUFFER_SIZE = 2048;
     private static final MdnsLogger LOGGER = new MdnsLogger(TAG);
     @NonNull private final Context mContext;
+    @NonNull private final Looper mLooper;
     @NonNull private final Handler mHandler;
     @NonNull private final Dependencies mDependencies;
     @NonNull private final NetworkCallback mNetworkCallback;
@@ -75,6 +80,7 @@
             new ArrayMap<>();
     private final List<String> mLocalOnlyInterfaces = new ArrayList<>();
     private final List<String> mTetheredInterfaces = new ArrayList<>();
+    private final byte[] mPacketReadBuffer = new byte[READ_BUFFER_SIZE];
     private boolean mMonitoringSockets = false;
 
     public MdnsSocketProvider(@NonNull Context context, @NonNull Looper looper) {
@@ -84,6 +90,7 @@
     MdnsSocketProvider(@NonNull Context context, @NonNull Looper looper,
             @NonNull Dependencies deps) {
         mContext = context;
+        mLooper = looper;
         mHandler = new Handler(looper);
         mDependencies = deps;
         mNetworkCallback = new NetworkCallback() {
@@ -119,32 +126,33 @@
     @VisibleForTesting
     public static class Dependencies {
         /*** Get network interface by given interface name */
-        public NetworkInterfaceWrapper getNetworkInterfaceByName(String interfaceName)
+        public NetworkInterfaceWrapper getNetworkInterfaceByName(@NonNull String interfaceName)
                 throws SocketException {
             final NetworkInterface ni = NetworkInterface.getByName(interfaceName);
             return ni == null ? null : new NetworkInterfaceWrapper(ni);
         }
 
         /*** Check whether given network interface can support mdns */
-        public boolean canScanOnInterface(NetworkInterfaceWrapper networkInterface) {
+        public boolean canScanOnInterface(@NonNull NetworkInterfaceWrapper networkInterface) {
             return MulticastNetworkInterfaceProvider.canScanOnInterface(networkInterface);
         }
 
         /*** Create a MdnsInterfaceSocket */
-        public MdnsInterfaceSocket createMdnsInterfaceSocket(NetworkInterface networkInterface,
-                int port) throws IOException {
-            return new MdnsInterfaceSocket(networkInterface, port);
+        public MdnsInterfaceSocket createMdnsInterfaceSocket(
+                @NonNull NetworkInterface networkInterface, int port, @NonNull Looper looper,
+                @NonNull byte[] packetReadBuffer) throws IOException {
+            return new MdnsInterfaceSocket(networkInterface, port, looper, packetReadBuffer);
         }
     }
 
     /*** Data class for storing socket related info  */
     private static class SocketInfo {
         final MdnsInterfaceSocket mSocket;
-        final List<LinkAddress> mAddresses = new ArrayList<>();
+        final List<LinkAddress> mAddresses;
 
         SocketInfo(MdnsInterfaceSocket socket, List<LinkAddress> addresses) {
             mSocket = socket;
-            mAddresses.addAll(addresses);
+            mAddresses = new ArrayList<>(addresses);
         }
     }
 
@@ -160,8 +168,9 @@
         }
     }
 
-    private void ensureRunningOnHandlerThread() {
-        if (mHandler.getLooper().getThread() != Thread.currentThread()) {
+    /*** Ensure that current running thread is same as given handler thread */
+    public static void ensureRunningOnHandlerThread(Handler handler) {
+        if (handler.getLooper().getThread() != Thread.currentThread()) {
             throw new IllegalStateException(
                     "Not running on Handler thread: " + Thread.currentThread().getName());
         }
@@ -169,7 +178,7 @@
 
     /*** Start monitoring sockets by listening callbacks for sockets creation or removal */
     public void startMonitoringSockets() {
-        ensureRunningOnHandlerThread();
+        ensureRunningOnHandlerThread(mHandler);
         if (mMonitoringSockets) {
             Log.d(TAG, "Already monitoring sockets.");
             return;
@@ -188,7 +197,7 @@
 
     /*** Stop monitoring sockets and unregister callbacks */
     public void stopMonitoringSockets() {
-        ensureRunningOnHandlerThread();
+        ensureRunningOnHandlerThread(mHandler);
         if (!mMonitoringSockets) {
             Log.d(TAG, "Monitoring sockets hasn't been started.");
             return;
@@ -204,19 +213,15 @@
         mMonitoringSockets = false;
     }
 
-    private static boolean isNetworkMatched(@Nullable Network targetNetwork,
+    /*** Check whether the target network is matched current network */
+    public static boolean isNetworkMatched(@Nullable Network targetNetwork,
             @NonNull Network currentNetwork) {
         return targetNetwork == null || targetNetwork.equals(currentNetwork);
     }
 
     private boolean matchRequestedNetwork(Network network) {
-        for (int i = 0; i < mCallbacksToRequestedNetworks.size(); i++) {
-            final Network requestedNetwork =  mCallbacksToRequestedNetworks.valueAt(i);
-            if (isNetworkMatched(requestedNetwork, network)) {
-                return true;
-            }
-        }
-        return false;
+        return hasAllNetworksRequest()
+                || mCallbacksToRequestedNetworks.containsValue(network);
     }
 
     private boolean hasAllNetworksRequest() {
@@ -244,7 +249,7 @@
             // Try to join the group again.
             socketInfo.mSocket.joinGroup(addresses);
 
-            notifyAddressesChanged(network, lp);
+            notifyAddressesChanged(network, socketInfo.mSocket, lp);
         }
     }
 
@@ -279,15 +284,6 @@
         current.addAll(updated);
     }
 
-    private static List<LinkAddress> getLinkAddressFromNetworkInterface(
-            NetworkInterfaceWrapper networkInterface) {
-        List<LinkAddress> addresses = new ArrayList<>();
-        for (InterfaceAddress address : networkInterface.getInterfaceAddresses()) {
-            addresses.add(new LinkAddress(address));
-        }
-        return addresses;
-    }
-
     private void createSocket(Network network, LinkProperties lp) {
         final String interfaceName = lp.getInterfaceName();
         if (interfaceName == null) {
@@ -307,10 +303,12 @@
                         + " with interfaceName:" + interfaceName);
             }
             final MdnsInterfaceSocket socket = mDependencies.createMdnsInterfaceSocket(
-                    networkInterface.getNetworkInterface(), MdnsConstants.MDNS_PORT);
+                    networkInterface.getNetworkInterface(), MdnsConstants.MDNS_PORT, mLooper,
+                    mPacketReadBuffer);
             final List<LinkAddress> addresses;
             if (network.netId == INetd.LOCAL_NET_ID) {
-                addresses = getLinkAddressFromNetworkInterface(networkInterface);
+                addresses = CollectionUtils.map(
+                        networkInterface.getInterfaceAddresses(), LinkAddress::new);
                 mTetherInterfaceSockets.put(interfaceName, new SocketInfo(socket, addresses));
             } else {
                 addresses = lp.getLinkAddresses();
@@ -355,12 +353,13 @@
         }
     }
 
-    private void notifyAddressesChanged(Network network, LinkProperties lp) {
+    private void notifyAddressesChanged(Network network, MdnsInterfaceSocket socket,
+            LinkProperties lp) {
         for (int i = 0; i < mCallbacksToRequestedNetworks.size(); i++) {
             final Network requestedNetwork = mCallbacksToRequestedNetworks.valueAt(i);
             if (isNetworkMatched(requestedNetwork, network)) {
                 mCallbacksToRequestedNetworks.keyAt(i)
-                        .onAddressesChanged(network, lp.getLinkAddresses());
+                        .onAddressesChanged(network, socket, lp.getLinkAddresses());
             }
         }
     }
@@ -401,7 +400,7 @@
      * @param cb the callback to listen the socket creation.
      */
     public void requestSocket(@Nullable Network network, @NonNull SocketCallback cb) {
-        ensureRunningOnHandlerThread();
+        ensureRunningOnHandlerThread(mHandler);
         mCallbacksToRequestedNetworks.put(cb, network);
         if (network == null) {
             // Does not specify a required network, create sockets for all possible
@@ -424,7 +423,7 @@
 
     /*** Unrequest the socket */
     public void unrequestSocket(@NonNull SocketCallback cb) {
-        ensureRunningOnHandlerThread();
+        ensureRunningOnHandlerThread(mHandler);
         mCallbacksToRequestedNetworks.remove(cb);
         if (hasAllNetworksRequest()) {
             // Still has a request for all networks (interfaces).
@@ -433,16 +432,24 @@
 
         // Check if remaining requests are matched any of sockets.
         for (int i = mNetworkSockets.size() - 1; i >= 0; i--) {
-            if (matchRequestedNetwork(mNetworkSockets.keyAt(i))) continue;
-            mNetworkSockets.removeAt(i).mSocket.destroy();
+            final Network network = mNetworkSockets.keyAt(i);
+            if (matchRequestedNetwork(network)) continue;
+            final SocketInfo info = mNetworkSockets.removeAt(i);
+            info.mSocket.destroy();
+            // Still notify to unrequester for socket destroy.
+            cb.onInterfaceDestroyed(network, info.mSocket);
         }
 
         // Remove all sockets for tethering interface because these sockets do not have associated
         // networks, and they should invoke by a request for all networks (interfaces). If there is
         // no such request, the sockets for tethering interface should be removed.
         for (int i = mTetherInterfaceSockets.size() - 1; i >= 0; i--) {
-            mTetherInterfaceSockets.removeAt(i).mSocket.destroy();
+            final SocketInfo info = mTetherInterfaceSockets.valueAt(i);
+            info.mSocket.destroy();
+            // Still notify to unrequester for socket destroy.
+            cb.onInterfaceDestroyed(new Network(INetd.LOCAL_NET_ID), info.mSocket);
         }
+        mTetherInterfaceSockets.clear();
     }
 
     /*** Callbacks for listening socket changes */
@@ -455,6 +462,6 @@
                 @NonNull MdnsInterfaceSocket socket) {}
         /*** Notify the addresses is changed on the network */
         default void onAddressesChanged(@NonNull Network network,
-                @NonNull List<LinkAddress> addresses) {}
+                @NonNull MdnsInterfaceSocket socket, @NonNull List<LinkAddress> addresses) {}
     }
 }
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsTextRecord.java b/service-t/src/com/android/server/mdns/MdnsTextRecord.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsTextRecord.java
rename to service-t/src/com/android/server/mdns/MdnsTextRecord.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/MulticastNetworkInterfaceProvider.java b/service-t/src/com/android/server/mdns/MulticastNetworkInterfaceProvider.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/MulticastNetworkInterfaceProvider.java
rename to service-t/src/com/android/server/mdns/MulticastNetworkInterfaceProvider.java
diff --git a/service-t/src/com/android/server/mdns/MulticastPacketReader.java b/service-t/src/com/android/server/mdns/MulticastPacketReader.java
new file mode 100644
index 0000000..b597f0a
--- /dev/null
+++ b/service-t/src/com/android/server/mdns/MulticastPacketReader.java
@@ -0,0 +1,120 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import static com.android.server.connectivity.mdns.MdnsSocketProvider.ensureRunningOnHandlerThread;
+
+import android.annotation.NonNull;
+import android.os.Handler;
+import android.os.ParcelFileDescriptor;
+import android.system.Os;
+import android.util.ArraySet;
+
+import com.android.net.module.util.FdEventsReader;
+
+import java.io.FileDescriptor;
+import java.net.InetSocketAddress;
+import java.util.Set;
+
+/** Simple reader for mDNS packets. */
+public class MulticastPacketReader extends FdEventsReader<MulticastPacketReader.RecvBuffer> {
+    @NonNull
+    private final String mLogTag;
+    @NonNull
+    private final ParcelFileDescriptor mSocket;
+    @NonNull
+    private final Handler mHandler;
+    @NonNull
+    private final Set<PacketHandler> mPacketHandlers = new ArraySet<>();
+
+    interface PacketHandler {
+        void handlePacket(byte[] recvbuf, int length, InetSocketAddress src);
+    }
+
+    public static final class RecvBuffer {
+        final byte[] data;
+        final InetSocketAddress src;
+
+        private RecvBuffer(byte[] data, InetSocketAddress src) {
+            this.data = data;
+            this.src = src;
+        }
+    }
+
+    /**
+     * Create a new {@link MulticastPacketReader}.
+     * @param socket Socket to read from. This will *not* be closed when the reader terminates.
+     * @param buffer Buffer to read packets into. Will only be used from the handler thread.
+     */
+    protected MulticastPacketReader(@NonNull String interfaceTag,
+            @NonNull ParcelFileDescriptor socket, @NonNull Handler handler,
+            @NonNull byte[] buffer) {
+        super(handler, new RecvBuffer(buffer, new InetSocketAddress()));
+        mLogTag = MulticastPacketReader.class.getSimpleName() + "/" + interfaceTag;
+        mSocket = socket;
+        mHandler = handler;
+    }
+
+    @Override
+    protected int recvBufSize(@NonNull RecvBuffer buffer) {
+        return buffer.data.length;
+    }
+
+    @Override
+    protected FileDescriptor createFd() {
+        // Keep a reference to the PFD as it would close the fd in its finalizer otherwise
+        return mSocket.getFileDescriptor();
+    }
+
+    @Override
+    protected void onStop() {
+        // Do nothing (do not close the FD)
+    }
+
+    @Override
+    protected int readPacket(@NonNull FileDescriptor fd, @NonNull RecvBuffer buffer)
+            throws Exception {
+        return Os.recvfrom(
+                fd, buffer.data, 0, buffer.data.length, 0 /* flags */, buffer.src);
+    }
+
+    @Override
+    protected void handlePacket(@NonNull RecvBuffer recvbuf, int length) {
+        for (PacketHandler handler : mPacketHandlers) {
+            handler.handlePacket(recvbuf.data, length, recvbuf.src);
+        }
+    }
+
+    /**
+     * Add a packet handler to deal with received packets. If the handler is already set,
+     * this is a no-op.
+     */
+    public void addPacketHandler(@NonNull PacketHandler handler) {
+        ensureRunningOnHandlerThread(mHandler);
+        mPacketHandlers.add(handler);
+    }
+
+    /**
+     * Remove a packet handler added via {@link #addPacketHandler}. If the handler was not set,
+     * this is a no-op.
+     */
+    public void removePacketHandler(@NonNull PacketHandler handler) {
+        ensureRunningOnHandlerThread(mHandler);
+        mPacketHandlers.remove(handler);
+    }
+}
+
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsAdvertiser.java b/service-t/src/com/android/server/mdns/NameConflictException.java
similarity index 64%
rename from service/mdns/com/android/server/connectivity/mdns/MdnsAdvertiser.java
rename to service-t/src/com/android/server/mdns/NameConflictException.java
index dee78fd..c123d02 100644
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsAdvertiser.java
+++ b/service-t/src/com/android/server/mdns/NameConflictException.java
@@ -16,14 +16,15 @@
 
 package com.android.server.connectivity.mdns;
 
-import android.util.Log;
-
 /**
- * MdnsAdvertiser manages advertising services per {@link com.android.server.NsdService} requests.
- *
- * TODO: implement
+ * An exception thrown when a service name conflicts with an existing service.
  */
-public class MdnsAdvertiser {
-    private static final String TAG = MdnsAdvertiser.class.getSimpleName();
-    public static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
+public class NameConflictException extends Exception {
+    /**
+     * ID of the existing service that conflicted.
+     */
+    public final int conflictingServiceId;
+    public NameConflictException(int conflictingServiceId) {
+        this.conflictingServiceId = conflictingServiceId;
+    }
 }
diff --git a/service/mdns/com/android/server/connectivity/mdns/NetworkInterfaceWrapper.java b/service-t/src/com/android/server/mdns/NetworkInterfaceWrapper.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/NetworkInterfaceWrapper.java
rename to service-t/src/com/android/server/mdns/NetworkInterfaceWrapper.java
diff --git a/service/mdns/com/android/server/connectivity/mdns/util/MdnsLogger.java b/service-t/src/com/android/server/mdns/util/MdnsLogger.java
similarity index 100%
rename from service/mdns/com/android/server/connectivity/mdns/util/MdnsLogger.java
rename to service-t/src/com/android/server/mdns/util/MdnsLogger.java
diff --git a/service-t/src/com/android/server/net/NetworkStatsFactory.java b/service-t/src/com/android/server/net/NetworkStatsFactory.java
index 8161f50..e0abdf1 100644
--- a/service-t/src/com/android/server/net/NetworkStatsFactory.java
+++ b/service-t/src/com/android/server/net/NetworkStatsFactory.java
@@ -200,16 +200,6 @@
     }
 
     /**
-     * Parse and return interface-level summary {@link NetworkStats} measured
-     * using {@code /proc/net/dev} style hooks, which may include non IP layer
-     * traffic. Values monotonically increase since device boot, and may include
-     * details about inactive interfaces.
-     */
-    public NetworkStats readNetworkStatsSummaryDev() throws IOException {
-        return mDeps.getNetworkStatsDev();
-    }
-
-    /**
      * Parse and return interface-level summary {@link NetworkStats}. Designed
      * to return only IP layer traffic. Values monotonically increase since
      * device boot, and may include details about inactive interfaces.
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index 3a17bdd..5852a30 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -339,13 +339,11 @@
             }
         }
 
-        Config getDevConfig();
         Config getXtConfig();
         Config getUidConfig();
         Config getUidTagConfig();
 
         long getGlobalAlertBytes(long def);
-        long getDevPersistBytes(long def);
         long getXtPersistBytes(long def);
         long getUidPersistBytes(long def);
         long getUidTagPersistBytes(long def);
@@ -395,8 +393,6 @@
     private final Semaphore mStatsProviderSem = new Semaphore(0, true);
 
     @GuardedBy("mStatsLock")
-    private NetworkStatsRecorder mDevRecorder;
-    @GuardedBy("mStatsLock")
     private NetworkStatsRecorder mXtRecorder;
     @GuardedBy("mStatsLock")
     private NetworkStatsRecorder mUidRecorder;
@@ -864,8 +860,6 @@
             mSystemReady = true;
 
             // create data recorders along with historical rotators
-            mDevRecorder = buildRecorder(PREFIX_DEV, mSettings.getDevConfig(), false, mStatsDir,
-                    true /* wipeOnError */);
             mXtRecorder = buildRecorder(PREFIX_XT, mSettings.getXtConfig(), false, mStatsDir,
                     true /* wipeOnError */);
             mUidRecorder = buildRecorder(PREFIX_UID, mSettings.getUidConfig(), false, mStatsDir,
@@ -963,7 +957,6 @@
         final long currentTime = mClock.millis();
 
         // persist any pending stats
-        mDevRecorder.forcePersistLocked(currentTime);
         mXtRecorder.forcePersistLocked(currentTime);
         mUidRecorder.forcePersistLocked(currentTime);
         mUidTagRecorder.forcePersistLocked(currentTime);
@@ -1030,8 +1023,17 @@
             Log.i(TAG, "Starting import : attempts " + attempts + "/" + targetAttempts);
         }
 
+        // Still create a legacy dev recorder locally but the service doesn't really use it.
+        // This is for backward compatibility where the OEMs might call readPlatformCollection to
+        // perform proprietary operations and relying on the side-effects to complete the follow-up
+        // import process.
+        final NetworkStatsSettings.Config devConfig =
+                new NetworkStatsSettings.Config(HOUR_IN_MILLIS,
+                15 * DAY_IN_MILLIS, 90 * DAY_IN_MILLIS);
+        final NetworkStatsRecorder devRecorder = buildRecorder(PREFIX_DEV, devConfig,
+                false, mStatsDir, true /* wipeOnError */);
         final MigrationInfo[] migrations = new MigrationInfo[]{
-                new MigrationInfo(mDevRecorder), new MigrationInfo(mXtRecorder),
+                new MigrationInfo(devRecorder), new MigrationInfo(mXtRecorder),
                 new MigrationInfo(mUidRecorder), new MigrationInfo(mUidTagRecorder)
         };
 
@@ -1041,9 +1043,10 @@
             final File legacyBaseDir = mDeps.getLegacyStatsDir();
             // Set wipeOnError flag false so the recorder won't damage persistent data if reads
             // failed and calling deleteAll.
+            // Set DEV legacy recorder as null since the DEV recorder has been removed.
+            // Thus it doesn't need to build DEV legacy recorder for comparing with imported data.
             legacyRecorders = new NetworkStatsRecorder[]{
-                buildRecorder(PREFIX_DEV, mSettings.getDevConfig(), false, legacyBaseDir,
-                        false /* wipeOnError */),
+                null /* dev Recorder */,
                 buildRecorder(PREFIX_XT, mSettings.getXtConfig(), false, legacyBaseDir,
                         false /* wipeOnError */),
                 buildRecorder(PREFIX_UID, mSettings.getUidConfig(), false, legacyBaseDir,
@@ -1060,7 +1063,6 @@
             // commit any data to disk until all are read.
             for (int i = 0; i < migrations.length; i++) {
                 final MigrationInfo migration = migrations[i];
-
                 // Read the collection from platform code, and set fallbacks counter if throws
                 // for better debugging.
                 try {
@@ -1094,6 +1096,7 @@
 
             // Find the latest end time.
             for (final MigrationInfo migration : migrations) {
+                if (PREFIX_DEV.equals(migration.recorder.getCookie())) continue;
                 final long migrationEnd = migration.collection.getEndMillis();
                 if (migrationEnd > migrationEndTime) migrationEndTime = migrationEnd;
             }
@@ -1110,7 +1113,8 @@
             for (final MigrationInfo migration : migrations) {
                 migration.imported = true;
                 migration.recorder.removeDataBefore(migrationEndTime);
-                if (migration.collection.isEmpty()) continue;
+                if (migration.collection.isEmpty()
+                        || PREFIX_DEV.equals(migration.recorder.getCookie())) continue;
                 migration.recorder.importCollectionLocked(migration.collection);
             }
 
@@ -1133,6 +1137,7 @@
             if (migrationEndTime > Long.MIN_VALUE) {
                 try {
                     for (final MigrationInfo migration : migrations) {
+                        if (PREFIX_DEV.equals(migration.recorder.getCookie())) continue;
                         if (migration.imported) {
                             migration.recorder.removeDataBefore(migrationEndTime);
                         }
@@ -1143,6 +1148,7 @@
                     // framework will reboot, and if there are remaining tries, the migration
                     // process will retry, which is fine because it's idempotent.
                     for (final MigrationInfo migration : migrations) {
+                        if (PREFIX_DEV.equals(migration.recorder.getCookie())) continue;
                         migration.recorder.recoverAndDeleteData();
                     }
                 }
@@ -1196,11 +1202,14 @@
     /**
      * Compare imported data with the data returned by legacy recorders.
      *
-     * @return true if the data matches, false if the data does not match or throw with exceptions.
+     * @return true if the data matches or if {@code legacyRecorder} is null, false if the data
+     * does not match or throw with exceptions.
      */
     private boolean compareImportedToLegacyStats(@NonNull MigrationInfo migration,
-            @NonNull NetworkStatsRecorder legacyRecorder) {
+            @Nullable NetworkStatsRecorder legacyRecorder) {
         final NetworkStatsCollection legacyStats;
+        // Skip the recorder that doesn't need to be compared.
+        if (legacyRecorder == null) return true;
         try {
             legacyStats = legacyRecorder.getOrLoadCompleteLocked();
         } catch (Throwable e) {
@@ -1854,7 +1863,6 @@
 
             updatePersistThresholdsLocked();
 
-            mDevRecorder.maybePersistLocked(currentTime);
             mXtRecorder.maybePersistLocked(currentTime);
             mUidRecorder.maybePersistLocked(currentTime);
             mUidTagRecorder.maybePersistLocked(currentTime);
@@ -1970,7 +1978,6 @@
      */
     @GuardedBy("mStatsLock")
     private void updatePersistThresholdsLocked() {
-        mDevRecorder.setPersistThreshold(mSettings.getDevPersistBytes(mPersistThreshold));
         mXtRecorder.setPersistThreshold(mSettings.getXtPersistBytes(mPersistThreshold));
         mUidRecorder.setPersistThreshold(mSettings.getUidPersistBytes(mPersistThreshold));
         mUidTagRecorder.setPersistThreshold(mSettings.getUidTagPersistBytes(mPersistThreshold));
@@ -2250,30 +2257,23 @@
     @GuardedBy("mStatsLock")
     private void recordSnapshotLocked(long currentTime) throws RemoteException {
         // snapshot and record current counters; read UID stats first to
-        // avoid over counting dev stats.
+        // avoid over counting xt stats.
         Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotUid");
         final NetworkStats uidSnapshot = getNetworkStatsUidDetail(INTERFACES_ALL);
         Trace.traceEnd(TRACE_TAG_NETWORK);
         Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotXt");
         final NetworkStats xtSnapshot = readNetworkStatsSummaryXt();
         Trace.traceEnd(TRACE_TAG_NETWORK);
-        Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotDev");
-        final NetworkStats devSnapshot = readNetworkStatsSummaryDev();
-        Trace.traceEnd(TRACE_TAG_NETWORK);
 
-        // Snapshot for dev/xt stats from all custom stats providers. Counts per-interface data
-        // from stats providers that isn't already counted by dev and XT stats.
+        // Snapshot for xt stats from all custom stats providers. Counts per-interface data
+        // from stats providers that isn't already counted by XT stats.
         Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotStatsProvider");
         final NetworkStats providersnapshot = getNetworkStatsFromProviders(STATS_PER_IFACE);
         Trace.traceEnd(TRACE_TAG_NETWORK);
         xtSnapshot.combineAllValues(providersnapshot);
-        devSnapshot.combineAllValues(providersnapshot);
 
-        // For xt/dev, we pass a null VPN array because usage is aggregated by UID, so VPN traffic
+        // For xt, we pass a null VPN array because usage is aggregated by UID, so VPN traffic
         // can't be reattributed to responsible apps.
-        Trace.traceBegin(TRACE_TAG_NETWORK, "recordDev");
-        mDevRecorder.recordSnapshotLocked(devSnapshot, mActiveIfaces, currentTime);
-        Trace.traceEnd(TRACE_TAG_NETWORK);
         Trace.traceBegin(TRACE_TAG_NETWORK, "recordXt");
         mXtRecorder.recordSnapshotLocked(xtSnapshot, mActiveIfaces, currentTime);
         Trace.traceEnd(TRACE_TAG_NETWORK);
@@ -2353,13 +2353,11 @@
         // persist any pending data depending on requested flags
         Trace.traceBegin(TRACE_TAG_NETWORK, "[persisting]");
         if (persistForce) {
-            mDevRecorder.forcePersistLocked(currentTime);
             mXtRecorder.forcePersistLocked(currentTime);
             mUidRecorder.forcePersistLocked(currentTime);
             mUidTagRecorder.forcePersistLocked(currentTime);
         } else {
             if (persistNetwork) {
-                mDevRecorder.maybePersistLocked(currentTime);
                 mXtRecorder.maybePersistLocked(currentTime);
             }
             if (persistUid) {
@@ -2416,30 +2414,25 @@
         final long currentTime = mClock.millis();
 
         NetworkTemplate template;
-        NetworkStats.Entry devTotal;
         NetworkStats.Entry xtTotal;
         NetworkStats.Entry uidTotal;
 
         // collect mobile sample
         template = new NetworkTemplate.Builder(MATCH_MOBILE).setMeteredness(METERED_YES).build();
-        devTotal = mDevRecorder.getTotalSinceBootLocked(template);
         xtTotal = mXtRecorder.getTotalSinceBootLocked(template);
         uidTotal = mUidRecorder.getTotalSinceBootLocked(template);
 
         EventLog.writeEvent(LOG_TAG_NETSTATS_MOBILE_SAMPLE,
-                devTotal.rxBytes, devTotal.rxPackets, devTotal.txBytes, devTotal.txPackets,
                 xtTotal.rxBytes, xtTotal.rxPackets, xtTotal.txBytes, xtTotal.txPackets,
                 uidTotal.rxBytes, uidTotal.rxPackets, uidTotal.txBytes, uidTotal.txPackets,
                 currentTime);
 
         // collect wifi sample
         template = new NetworkTemplate.Builder(MATCH_WIFI).build();
-        devTotal = mDevRecorder.getTotalSinceBootLocked(template);
         xtTotal = mXtRecorder.getTotalSinceBootLocked(template);
         uidTotal = mUidRecorder.getTotalSinceBootLocked(template);
 
         EventLog.writeEvent(LOG_TAG_NETSTATS_WIFI_SAMPLE,
-                devTotal.rxBytes, devTotal.rxPackets, devTotal.txBytes, devTotal.txPackets,
                 xtTotal.rxBytes, xtTotal.rxPackets, xtTotal.txBytes, xtTotal.txPackets,
                 uidTotal.rxBytes, uidTotal.rxPackets, uidTotal.txBytes, uidTotal.txPackets,
                 currentTime);
@@ -2741,7 +2734,12 @@
 
             pw.println("Dev stats:");
             pw.increaseIndent();
-            mDevRecorder.dumpLocked(pw, fullHistory);
+            pw.println("Pending bytes: ");
+            if (fullHistory) {
+                pw.println("Complete history:");
+            } else {
+                pw.println("History since boot:");
+            }
             pw.decreaseIndent();
 
             pw.println("Xt stats:");
@@ -2801,7 +2799,6 @@
                 mActiveIfaces);
         dumpInterfaces(proto, NetworkStatsServiceDumpProto.ACTIVE_UID_INTERFACES,
                 mActiveUidIfaces);
-        mDevRecorder.dumpDebugLocked(proto, NetworkStatsServiceDumpProto.DEV_STATS);
         mXtRecorder.dumpDebugLocked(proto, NetworkStatsServiceDumpProto.XT_STATS);
         mUidRecorder.dumpDebugLocked(proto, NetworkStatsServiceDumpProto.UID_STATS);
         mUidTagRecorder.dumpDebugLocked(proto,
@@ -2817,7 +2814,7 @@
             return;
         }
         if (map.isEmpty()) {
-            pw.println("No entries");
+            pw.println("");
             return;
         }
         // If there is a concurrent entry deletion, value could be null. http://b/220084230.
@@ -2936,14 +2933,6 @@
                 });
     }
 
-    private NetworkStats readNetworkStatsSummaryDev() {
-        try {
-            return mStatsFactory.readNetworkStatsSummaryDev();
-        } catch (IOException e) {
-            throw new IllegalStateException(e);
-        }
-    }
-
     private NetworkStats readNetworkStatsSummaryXt() {
         try {
             return mStatsFactory.readNetworkStatsSummaryXt();
@@ -3252,12 +3241,8 @@
             return false;
         }
         @Override
-        public Config getDevConfig() {
-            return new Config(HOUR_IN_MILLIS, 15 * DAY_IN_MILLIS, 90 * DAY_IN_MILLIS);
-        }
-        @Override
         public Config getXtConfig() {
-            return getDevConfig();
+            return new Config(HOUR_IN_MILLIS, 15 * DAY_IN_MILLIS, 90 * DAY_IN_MILLIS);
         }
         @Override
         public Config getUidConfig() {
@@ -3268,10 +3253,6 @@
             return new Config(2 * HOUR_IN_MILLIS, 5 * DAY_IN_MILLIS, 15 * DAY_IN_MILLIS);
         }
         @Override
-        public long getDevPersistBytes(long def) {
-            return def;
-        }
-        @Override
         public long getXtPersistBytes(long def) {
             return def;
         }
diff --git a/service/Android.bp b/service/Android.bp
index 224fa19..c8d2fdd 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -195,26 +195,6 @@
     ],
 }
 
-// TODO: Remove this temporary library and put code into module when test coverage is enough.
-java_library {
-    name: "service-mdns",
-    sdk_version: "system_server_current",
-    min_sdk_version: "30",
-    srcs: [
-        "mdns/**/*.java",
-    ],
-    libs: [
-        "framework-annotations-lib",
-        "framework-connectivity-pre-jarjar",
-        "framework-tethering",
-        "framework-wifi",
-        "service-connectivity-pre-jarjar",
-    ],
-    visibility: [
-        "//packages/modules/Connectivity/tests:__subpackages__",
-    ],
-}
-
 java_library {
     name: "service-connectivity-protos",
     sdk_version: "system_current",
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsPacket.java b/service/mdns/com/android/server/connectivity/mdns/MdnsPacket.java
deleted file mode 100644
index eae084a..0000000
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsPacket.java
+++ /dev/null
@@ -1,43 +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 com.android.server.connectivity.mdns;
-
-import java.util.Collections;
-import java.util.List;
-
-/**
- * A class holding data that can be included in a mDNS packet.
- */
-public class MdnsPacket {
-    public final int flags;
-    public final List<MdnsRecord> questions;
-    public final List<MdnsRecord> answers;
-    public final List<MdnsRecord> authorityRecords;
-    public final List<MdnsRecord> additionalRecords;
-
-    MdnsPacket(int flags,
-            List<MdnsRecord> questions,
-            List<MdnsRecord> answers,
-            List<MdnsRecord> authorityRecords,
-            List<MdnsRecord> additionalRecords) {
-        this.flags = flags;
-        this.questions = Collections.unmodifiableList(questions);
-        this.answers = Collections.unmodifiableList(answers);
-        this.authorityRecords = Collections.unmodifiableList(authorityRecords);
-        this.additionalRecords = Collections.unmodifiableList(additionalRecords);
-    }
-}
diff --git a/service/mdns/com/android/server/connectivity/mdns/MdnsReplySender.java b/service/mdns/com/android/server/connectivity/mdns/MdnsReplySender.java
deleted file mode 100644
index 1fdbc5c..0000000
--- a/service/mdns/com/android/server/connectivity/mdns/MdnsReplySender.java
+++ /dev/null
@@ -1,89 +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 com.android.server.connectivity.mdns;
-
-import android.annotation.NonNull;
-import android.os.Looper;
-
-import java.io.IOException;
-import java.net.DatagramPacket;
-import java.net.MulticastSocket;
-import java.net.SocketAddress;
-
-/**
- * A class that handles sending mDNS replies to a {@link MulticastSocket}, possibly queueing them
- * to be sent after some delay.
- *
- * TODO: implement sending after a delay, combining queued replies and duplicate answer suppression
- */
-public class MdnsReplySender {
-    @NonNull
-    private final MulticastSocket mSocket;
-    @NonNull
-    private final Looper mLooper;
-    @NonNull
-    private final byte[] mPacketCreationBuffer;
-
-    public MdnsReplySender(@NonNull Looper looper,
-            @NonNull MulticastSocket socket, @NonNull byte[] packetCreationBuffer) {
-        mLooper = looper;
-        mSocket = socket;
-        mPacketCreationBuffer = packetCreationBuffer;
-    }
-
-    /**
-     * Send a packet immediately.
-     *
-     * Must be called on the looper thread used by the {@link MdnsReplySender}.
-     */
-    public void sendNow(@NonNull MdnsPacket packet, @NonNull SocketAddress destination)
-            throws IOException {
-        if (Thread.currentThread() != mLooper.getThread()) {
-            throw new IllegalStateException("sendNow must be called in the handler thread");
-        }
-
-        // TODO: support packets over size (send in multiple packets with TC bit set)
-        final MdnsPacketWriter writer = new MdnsPacketWriter(mPacketCreationBuffer);
-
-        writer.writeUInt16(0); // Transaction ID (advertisement: 0)
-        writer.writeUInt16(packet.flags); // Response, authoritative (rfc6762 18.4)
-        writer.writeUInt16(packet.questions.size()); // questions count
-        writer.writeUInt16(packet.answers.size()); // answers count
-        writer.writeUInt16(packet.authorityRecords.size()); // authority entries count
-        writer.writeUInt16(packet.additionalRecords.size()); // additional records count
-
-        for (MdnsRecord record : packet.questions) {
-            // Questions do not have TTL or data
-            record.writeHeaderFields(writer);
-        }
-        for (MdnsRecord record : packet.answers) {
-            record.write(writer, 0L);
-        }
-        for (MdnsRecord record : packet.authorityRecords) {
-            record.write(writer, 0L);
-        }
-        for (MdnsRecord record : packet.additionalRecords) {
-            record.write(writer, 0L);
-        }
-
-        final int len = writer.getWritePosition();
-        final byte[] outBuffer = new byte[len];
-        System.arraycopy(mPacketCreationBuffer, 0, outBuffer, 0, len);
-
-        mSocket.send(new DatagramPacket(outBuffer, 0, len, destination));
-    }
-}
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index 004b4d2..f5c6fb7 100755
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -242,6 +242,8 @@
 import android.util.SparseArray;
 import android.util.SparseIntArray;
 
+import androidx.annotation.RequiresApi;
+
 import com.android.connectivity.resources.R;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
@@ -262,7 +264,12 @@
 import com.android.net.module.util.PermissionUtils;
 import com.android.net.module.util.TcUtils;
 import com.android.net.module.util.netlink.InetDiagMessage;
+import com.android.networkstack.apishim.BroadcastOptionsShimImpl;
+import com.android.networkstack.apishim.ConstantsShim;
+import com.android.networkstack.apishim.common.BroadcastOptionsShim;
+import com.android.networkstack.apishim.common.UnsupportedApiLevelException;
 import com.android.server.connectivity.AutodestructReference;
+import com.android.server.connectivity.AutomaticOnOffKeepaliveTracker;
 import com.android.server.connectivity.CarrierPrivilegeAuthenticator;
 import com.android.server.connectivity.ClatCoordinator;
 import com.android.server.connectivity.ConnectivityFlags;
@@ -372,6 +379,10 @@
     private static final int DEFAULT_LINGER_DELAY_MS = 30_000;
     private static final int DEFAULT_NASCENT_DELAY_MS = 5_000;
 
+    // Delimiter used when creating the broadcast delivery group for sending
+    // CONNECTIVITY_ACTION broadcast.
+    private static final char DELIVERY_GROUP_KEY_DELIMITER = ';';
+
     // The maximum value for the blocking validation result, in milliseconds.
     public static final int MAX_VALIDATION_IGNORE_AFTER_ROAM_TIME_MS = 10000;
 
@@ -833,7 +844,7 @@
 
     private final LocationPermissionChecker mLocationPermissionChecker;
 
-    private final KeepaliveTracker mKeepaliveTracker;
+    private final AutomaticOnOffKeepaliveTracker mKeepaliveTracker;
     private final QosCallbackTracker mQosCallbackTracker;
     private final NetworkNotificationManager mNotifier;
     private final LingerMonitor mLingerMonitor;
@@ -1411,6 +1422,16 @@
                         + ", ingress=true, PRIO_POLICE, ETH_P_ALL) failure: ", e);
             }
         }
+
+        /**
+         * Wraps {@link BroadcastOptionsShimImpl#newInstance(BroadcastOptions)}
+         */
+        // TODO: when available in all active branches:
+        //  @RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
+        @RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT)
+        public BroadcastOptionsShim makeBroadcastOptionsShim(BroadcastOptions options) {
+            return BroadcastOptionsShimImpl.newInstance(options);
+        }
     }
 
     public ConnectivityService(Context context) {
@@ -1545,7 +1566,7 @@
         mSettingsObserver = new SettingsObserver(mContext, mHandler);
         registerSettingsCallbacks();
 
-        mKeepaliveTracker = new KeepaliveTracker(mContext, mHandler);
+        mKeepaliveTracker = new AutomaticOnOffKeepaliveTracker(mContext, mHandler);
         mNotifier = new NetworkNotificationManager(mContext, mTelephonyManager);
         mQosCallbackTracker = new QosCallbackTracker(mHandler, mNetworkRequestCounter);
 
@@ -3037,6 +3058,7 @@
                         ConnectivityManager.EXTRA_NETWORK_INFO);
                 final BroadcastOptions opts = BroadcastOptions.makeBasic();
                 opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M);
+                applyMostRecentPolicyForConnectivityAction(opts, ni);
                 options = opts.toBundle();
                 intent.addFlags(Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS);
             }
@@ -3048,6 +3070,32 @@
         }
     }
 
+    private void applyMostRecentPolicyForConnectivityAction(BroadcastOptions options,
+            NetworkInfo info) {
+        // Delivery group policy APIs are only available on U+.
+        if (!SdkLevel.isAtLeastU()) return;
+
+        final BroadcastOptionsShim optsShim = mDeps.makeBroadcastOptionsShim(options);
+        try {
+            // This allows us to discard older broadcasts still waiting to be delivered
+            // which have the same namespace and key.
+            optsShim.setDeliveryGroupPolicy(ConstantsShim.DELIVERY_GROUP_POLICY_MOST_RECENT);
+            optsShim.setDeliveryGroupMatchingKey(ConnectivityManager.CONNECTIVITY_ACTION,
+                    createDeliveryGroupKeyForConnectivityAction(info));
+        } catch (UnsupportedApiLevelException e) {
+            Log.wtf(TAG, "Using unsupported API" + e);
+        }
+    }
+
+    @VisibleForTesting
+    static String createDeliveryGroupKeyForConnectivityAction(NetworkInfo info) {
+        final StringBuilder sb = new StringBuilder();
+        sb.append(info.getType()).append(DELIVERY_GROUP_KEY_DELIMITER);
+        sb.append(info.getSubtype()).append(DELIVERY_GROUP_KEY_DELIMITER);
+        sb.append(info.getExtraInfo());
+        return sb.toString();
+    }
+
     /**
      * Called by SystemServer through ConnectivityManager when the system is ready.
      */
@@ -4366,6 +4414,9 @@
             mNetworkForNetId.remove(nai.network.getNetId());
         }
         propagateUnderlyingNetworkCapabilities(nai.network);
+        // Update allowed network lists in netd. This should be called after removing nai
+        // from mNetworkAgentInfos.
+        updateProfileAllowedNetworks();
         // Remove all previously satisfied requests.
         for (int i = 0; i < nai.numNetworkRequests(); i++) {
             final NetworkRequest request = nai.requestAt(i);
@@ -4800,6 +4851,7 @@
                 }
             }
         }
+
         nri.mPerUidCounter.decrementCount(nri.mUid);
         mNetworkRequestInfoLogs.log("RELEASE " + nri);
         checkNrisConsistency(nri);
@@ -5493,6 +5545,33 @@
                     mKeepaliveTracker.handleStartKeepalive(msg);
                     break;
                 }
+                case NetworkAgent.CMD_MONITOR_AUTOMATIC_KEEPALIVE: {
+                    final Network network = (Network) msg.obj;
+                    final int slot = msg.arg1;
+
+                    boolean networkFound = false;
+                    final ArrayList<NetworkAgentInfo> vpnsRunningOnThisNetwork = new ArrayList<>();
+                    for (NetworkAgentInfo n : mNetworkAgentInfos) {
+                        if (n.network.equals(network)) networkFound = true;
+                        if (n.isVPN() && n.everConnected() && hasUnderlyingNetwork(n, network)) {
+                            vpnsRunningOnThisNetwork.add(n);
+                        }
+                    }
+
+                    // If the network no longer exists, then the keepalive should have been
+                    // cleaned up already. There is no point trying to resume keepalives.
+                    if (!networkFound) return;
+
+                    if (!vpnsRunningOnThisNetwork.isEmpty()) {
+                        mKeepaliveTracker.handleMonitorAutomaticKeepalive(network, slot,
+                                // TODO: check all the VPNs running on top of this network
+                                vpnsRunningOnThisNetwork.get(0).network.netId);
+                    } else {
+                        // If no VPN, then make sure the keepalive is running.
+                        mKeepaliveTracker.handleMaybeResumeKeepalive(network, slot);
+                    }
+                    break;
+                }
                 // Sent by KeepaliveTracker to process an app request on the state machine thread.
                 case NetworkAgent.CMD_STOP_SOCKET_KEEPALIVE: {
                     NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj);
@@ -6166,12 +6245,14 @@
         if (mOemNetworkPreferences.getNetworkPreferences().size() > 0) {
             handleSetOemNetworkPreference(mOemNetworkPreferences, null);
         }
+        updateProfileAllowedNetworks();
     }
 
     private void onUserRemoved(@NonNull final UserHandle user) {
         // If there was a network preference for this user, remove it.
         handleSetProfileNetworkPreference(
-                List.of(new ProfileNetworkPreferenceInfo(user, null, true)),
+                List.of(new ProfileNetworkPreferenceInfo(user, null, true,
+                        false /* blockingNonEnterprise */)),
                 null /* listener */);
         if (mOemNetworkPreferences.getNetworkPreferences().size() > 0) {
             handleSetOemNetworkPreference(mOemNetworkPreferences, null);
@@ -8688,6 +8769,73 @@
         }
     }
 
+    /**
+     * Collect restricted uid ranges for the given network and UserHandle, these uids
+     * are not restricted for matched enterprise networks but being restricted for non-matched
+     * enterprise networks and non-enterprise networks.
+     */
+    @NonNull
+    private ArraySet<UidRange> getRestrictedUidRangesForEnterpriseBlocking(
+            @NonNull NetworkAgentInfo nai, @NonNull UserHandle user) {
+        final ArraySet<UidRange> restrictedUidRanges = new ArraySet<>();
+        for (final ProfileNetworkPreferenceInfo pref : mProfileNetworkPreferences) {
+            if (!pref.user.equals(user) || !pref.blockingNonEnterprise) continue;
+
+            if (nai.networkCapabilities.hasCapability(NET_CAPABILITY_ENTERPRISE)) {
+                // The NC is built from a `ProfileNetworkPreference` which has only one
+                // enterprise ID, so it's guaranteed to have exactly one.
+                final int prefId = pref.capabilities.getEnterpriseIds()[0];
+                if (nai.networkCapabilities.hasEnterpriseId(prefId)) {
+                    continue;
+                }
+            }
+
+            if (UidRangeUtils.doesRangeSetOverlap(restrictedUidRanges,
+                    pref.capabilities.getUidRanges())) {
+                throw new IllegalArgumentException(
+                        "Overlapping uid range in preference: " + pref);
+            }
+            restrictedUidRanges.addAll(pref.capabilities.getUidRanges());
+        }
+        return restrictedUidRanges;
+    }
+
+    private void updateProfileAllowedNetworks() {
+        ensureRunningOnConnectivityServiceThread();
+        final ArrayList<NativeUidRangeConfig> configs = new ArrayList<>();
+        final List<UserHandle> users = mContext.getSystemService(UserManager.class)
+                        .getUserHandles(true /* excludeDying */);
+        if (users.isEmpty()) {
+            throw new IllegalStateException("No user is available");
+        }
+
+        for (final NetworkAgentInfo nai : mNetworkAgentInfos) {
+            ArraySet<UidRange> allowedUidRanges = new ArraySet<>();
+            for (final UserHandle user : users) {
+                final ArraySet<UidRange> restrictedUidRanges =
+                        getRestrictedUidRangesForEnterpriseBlocking(nai, user);
+                allowedUidRanges.addAll(UidRangeUtils.removeRangeSetFromUidRange(
+                        UidRange.createForUser(user), restrictedUidRanges));
+            }
+
+            final UidRangeParcel[] rangesParcel = toUidRangeStableParcels(allowedUidRanges);
+            configs.add(new NativeUidRangeConfig(
+                    nai.network.netId, rangesParcel, 0 /* subPriority */));
+        }
+
+        // The netd API replaces the previous configs with the current configs.
+        // Thus, for network disconnection or preference removal, no need to
+        // unset previous config. Instead, collecting all currently needed
+        // configs and issue to netd.
+        try {
+            mNetd.setNetworkAllowlist(configs.toArray(new NativeUidRangeConfig[0]));
+        } catch (ServiceSpecificException e) {
+            // Has the interface disappeared since the network was built?
+        } catch (RemoteException e) {
+            // Netd died. This usually causes a runtime restart anyway.
+        }
+    }
+
     private void makeDefaultNetwork(@Nullable final NetworkAgentInfo newDefaultNetwork) {
         try {
             if (null != newDefaultNetwork) {
@@ -9320,6 +9468,7 @@
             networkAgent.setCreated();
             networkAgent.onNetworkCreated();
             updateAllowedUids(networkAgent, null, networkAgent.networkCapabilities);
+            updateProfileAllowedNetworks();
         }
 
         if (!networkAgent.everConnected() && state == NetworkInfo.State.CONNECTED) {
@@ -9665,20 +9814,23 @@
         enforceKeepalivePermission();
         mKeepaliveTracker.startNattKeepalive(
                 getNetworkAgentInfoForNetwork(network), null /* fd */,
-                intervalSeconds, cb,
-                srcAddr, srcPort, dstAddr, NattSocketKeepalive.NATT_PORT);
+                intervalSeconds, cb, srcAddr, srcPort, dstAddr, NattSocketKeepalive.NATT_PORT,
+                // Keep behavior of the deprecated method as it is. Set automaticOnOffKeepalives to
+                // false because there is no way and no plan to configure automaticOnOffKeepalives
+                // in this deprecated method.
+                false /* automaticOnOffKeepalives */);
     }
 
     @Override
     public void startNattKeepaliveWithFd(Network network, ParcelFileDescriptor pfd, int resourceId,
             int intervalSeconds, ISocketKeepaliveCallback cb, String srcAddr,
-            String dstAddr) {
+            String dstAddr, boolean automaticOnOffKeepalives) {
         try {
             final FileDescriptor fd = pfd.getFileDescriptor();
             mKeepaliveTracker.startNattKeepalive(
                     getNetworkAgentInfoForNetwork(network), fd, resourceId,
                     intervalSeconds, cb,
-                    srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT);
+                    srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT, automaticOnOffKeepalives);
         } finally {
             // FileDescriptors coming from AIDL calls must be manually closed to prevent leaks.
             // startNattKeepalive calls Os.dup(fd) before returning, so we can close immediately.
@@ -10856,6 +11008,7 @@
         for (final ProfileNetworkPreference preference : preferences) {
             final NetworkCapabilities nc;
             boolean allowFallback = true;
+            boolean blockingNonEnterprise = false;
             switch (preference.getPreference()) {
                 case ConnectivityManager.PROFILE_NETWORK_PREFERENCE_DEFAULT:
                     nc = null;
@@ -10865,6 +11018,9 @@
                                 "Invalid enterprise identifier in setProfileNetworkPreferences");
                     }
                     break;
+                case ConnectivityManager.PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING:
+                    blockingNonEnterprise = true;
+                    // continue to process the enterprise preference.
                 case ConnectivityManager.PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK:
                     allowFallback = false;
                     // continue to process the enterprise preference.
@@ -10898,7 +11054,8 @@
                     throw new IllegalArgumentException(
                             "Invalid preference in setProfileNetworkPreferences");
             }
-            preferenceList.add(new ProfileNetworkPreferenceInfo(profile, nc, allowFallback));
+            preferenceList.add(new ProfileNetworkPreferenceInfo(
+                    profile, nc, allowFallback, blockingNonEnterprise));
             if (hasDefaultPreference && preferenceList.size() > 1) {
                 throw new IllegalArgumentException(
                         "Default profile preference should not be set along with other preference");
@@ -11011,6 +11168,7 @@
         removeDefaultNetworkRequestsForPreference(PREFERENCE_ORDER_PROFILE);
         addPerAppDefaultNetworkRequests(
                 createNrisFromProfileNetworkPreferences(mProfileNetworkPreferences));
+        updateProfileAllowedNetworks();
 
         // Finally, rematch.
         rematchAllNetworksAndRequests();
diff --git a/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
new file mode 100644
index 0000000..27be545
--- /dev/null
+++ b/service/src/com/android/server/connectivity/AutomaticOnOffKeepaliveTracker.java
@@ -0,0 +1,691 @@
+/*
+ * 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.connectivity;
+
+import static android.net.NetworkAgent.CMD_START_SOCKET_KEEPALIVE;
+import static android.net.SocketKeepalive.ERROR_INVALID_SOCKET;
+import static android.net.SocketKeepalive.SUCCESS;
+import static android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY;
+import static android.system.OsConstants.AF_INET;
+import static android.system.OsConstants.AF_INET6;
+import static android.system.OsConstants.SOL_SOCKET;
+import static android.system.OsConstants.SO_SNDTIMEO;
+
+import static com.android.net.module.util.netlink.NetlinkConstants.NLMSG_DONE;
+import static com.android.net.module.util.netlink.NetlinkConstants.SOCKDIAG_MSG_HEADER_SIZE;
+import static com.android.net.module.util.netlink.NetlinkConstants.SOCK_DIAG_BY_FAMILY;
+import static com.android.net.module.util.netlink.NetlinkUtils.IO_TIMEOUT_MS;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.INetd;
+import android.net.ISocketKeepaliveCallback;
+import android.net.MarkMaskParcel;
+import android.net.Network;
+import android.net.NetworkAgent;
+import android.net.SocketKeepalive;
+import android.net.SocketKeepalive.InvalidSocketException;
+import android.os.FileUtils;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.RemoteException;
+import android.os.SystemClock;
+import android.system.ErrnoException;
+import android.system.Os;
+import android.system.StructTimeval;
+import android.util.Log;
+import android.util.SparseArray;
+
+import com.android.internal.annotations.VisibleForTesting;
+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.DeviceConfigUtils;
+import com.android.net.module.util.HexDump;
+import com.android.net.module.util.SocketUtils;
+import com.android.net.module.util.netlink.InetDiagMessage;
+import com.android.net.module.util.netlink.NetlinkUtils;
+import com.android.net.module.util.netlink.StructNlAttr;
+
+import java.io.FileDescriptor;
+import java.io.InterruptedIOException;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.net.SocketException;
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Manages automatic on/off socket keepalive requests.
+ *
+ * Provides methods to stop and start automatic keepalive requests, and keeps track of keepalives
+ * across all networks. For non-automatic on/off keepalive request, this class just forwards the
+ * requests to KeepaliveTracker. This class is tightly coupled to ConnectivityService. It is not
+ * thread-safe and its handle* methods must be called only from the ConnectivityService handler
+ * thread.
+ */
+public class AutomaticOnOffKeepaliveTracker {
+    private static final String TAG = "AutomaticOnOffKeepaliveTracker";
+    private static final int[] ADDRESS_FAMILIES = new int[] {AF_INET6, AF_INET};
+    private static final String ACTION_TCP_POLLING_ALARM =
+            "com.android.server.connectivity.KeepaliveTracker.TCP_POLLING_ALARM";
+    private static final String EXTRA_NETWORK = "network_id";
+    private static final String EXTRA_SLOT = "slot";
+    private static final long DEFAULT_TCP_POLLING_INTERVAL_MS = 120_000L;
+    private static final String AUTOMATIC_ON_OFF_KEEPALIVE_VERSION =
+            "automatic_on_off_keepalive_version";
+    /**
+     * States for {@code #AutomaticOnOffKeepalive}.
+     *
+     * A new AutomaticOnOffKeepalive starts with STATE_ENABLED. The system will monitor
+     * the TCP sockets on VPN networks running on top of the specified network, and turn off
+     * keepalive if there is no TCP socket any of the VPN networks. Conversely, it will turn
+     * keepalive back on if any TCP socket is open on any of the VPN networks.
+     *
+     * When there is no TCP socket on any of the VPN networks, the state becomes STATE_SUSPENDED.
+     * The {@link KeepaliveTracker.KeepaliveInfo} object is kept to remember the parameters so it
+     * is possible to resume keepalive later with the same parameters.
+     *
+     * When the system detects some TCP socket is open on one of the VPNs while in STATE_SUSPENDED,
+     * this AutomaticOnOffKeepalive goes to STATE_ENABLED again.
+     *
+     * When finishing keepalive, this object is deleted.
+     */
+    private static final int STATE_ENABLED = 0;
+    private static final int STATE_SUSPENDED = 1;
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = { "STATE_" }, value = {
+            STATE_ENABLED,
+            STATE_SUSPENDED
+    })
+    private @interface AutomaticOnOffState {}
+
+    @NonNull
+    private final Handler mConnectivityServiceHandler;
+    @NonNull
+    private final KeepaliveTracker mKeepaliveTracker;
+    @NonNull
+    private final Context mContext;
+    @NonNull
+    private final AlarmManager mAlarmManager;
+
+    /**
+     * The {@code inetDiagReqV2} messages for different IP family.
+     *
+     *   Key: Ip family type.
+     * Value: Bytes array represent the {@code inetDiagReqV2}.
+     *
+     * This should only be accessed in the connectivity service handler thread.
+     */
+    private final SparseArray<byte[]> mSockDiagMsg = new SparseArray<>();
+    private final Dependencies mDependencies;
+    private final INetd mNetd;
+    /**
+     * Keeps track of automatic on/off keepalive requests.
+     * This should be only updated in ConnectivityService handler thread.
+     */
+    private final ArrayList<AutomaticOnOffKeepalive> mAutomaticOnOffKeepalives = new ArrayList<>();
+
+    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (ACTION_TCP_POLLING_ALARM.equals(intent.getAction())) {
+                Log.d(TAG, "Received TCP polling intent");
+                final Network network = intent.getParcelableExtra(EXTRA_NETWORK);
+                final int slot = intent.getIntExtra(EXTRA_SLOT, -1);
+                mConnectivityServiceHandler.obtainMessage(
+                        NetworkAgent.CMD_MONITOR_AUTOMATIC_KEEPALIVE,
+                        slot, 0 , network).sendToTarget();
+            }
+        }
+    };
+
+    private static class AutomaticOnOffKeepalive {
+        @NonNull
+        private final KeepaliveTracker.KeepaliveInfo mKi;
+        @NonNull
+        private final FileDescriptor mFd;
+        @NonNull
+        private final PendingIntent mTcpPollingAlarm;
+        private final int mSlot;
+        @AutomaticOnOffState
+        private int mAutomaticOnOffState = STATE_ENABLED;
+
+        AutomaticOnOffKeepalive(@NonNull KeepaliveTracker.KeepaliveInfo ki,
+                @NonNull Context context) throws InvalidSocketException {
+            this.mKi = Objects.requireNonNull(ki);
+            // A null fd is acceptable in KeepaliveInfo for backward compatibility of
+            // PacketKeepalive API, but it should not happen here because legacy API cannot setup
+            // automatic keepalive.
+            Objects.requireNonNull(ki.mFd);
+
+            // Get the slot from keepalive because the slot information may be missing when the
+            // keepalive is stopped.
+            this.mSlot = ki.getSlot();
+            try {
+                this.mFd = Os.dup(ki.mFd);
+            } catch (ErrnoException e) {
+                Log.e(TAG, "Cannot dup fd: ", e);
+                throw new InvalidSocketException(ERROR_INVALID_SOCKET, e);
+            }
+            mTcpPollingAlarm = createTcpPollingAlarmIntent(
+                    context, ki.getNai().network(), ki.getSlot());
+        }
+
+        public boolean match(Network network, int slot) {
+            return this.mKi.getNai().network().equals(network) && this.mSlot == slot;
+        }
+
+        private static PendingIntent createTcpPollingAlarmIntent(@NonNull Context context,
+                @NonNull Network network, int slot) {
+            final Intent intent = new Intent(ACTION_TCP_POLLING_ALARM);
+            intent.putExtra(EXTRA_NETWORK, network);
+            intent.putExtra(EXTRA_SLOT, slot);
+            return PendingIntent.getBroadcast(
+                    context, 0 /* requestCode */, intent, PendingIntent.FLAG_IMMUTABLE);
+        }
+    }
+
+    public AutomaticOnOffKeepaliveTracker(@NonNull Context context, @NonNull Handler handler) {
+        this(context, handler, new Dependencies(context));
+    }
+
+    @VisibleForTesting
+    public AutomaticOnOffKeepaliveTracker(@NonNull Context context, @NonNull Handler handler,
+            @NonNull Dependencies dependencies) {
+        mContext = Objects.requireNonNull(context);
+        mDependencies = Objects.requireNonNull(dependencies);
+        mConnectivityServiceHandler = Objects.requireNonNull(handler);
+        mNetd = mDependencies.getNetd();
+        mKeepaliveTracker = mDependencies.newKeepaliveTracker(
+                mContext, mConnectivityServiceHandler);
+
+        if (SdkLevel.isAtLeastU()) {
+            mContext.registerReceiver(mReceiver, new IntentFilter(ACTION_TCP_POLLING_ALARM),
+                    null, handler);
+        }
+        mAlarmManager = mContext.getSystemService(AlarmManager.class);
+    }
+
+    private void startTcpPollingAlarm(@NonNull PendingIntent alarm) {
+        final long triggerAtMillis =
+                SystemClock.elapsedRealtime() + DEFAULT_TCP_POLLING_INTERVAL_MS;
+        // Setup a non-wake up alarm.
+        mAlarmManager.setExact(AlarmManager.ELAPSED_REALTIME, triggerAtMillis, alarm);
+    }
+
+    /**
+     * Determine if any state transition is needed for the specific automatic keepalive.
+     */
+    public void handleMonitorAutomaticKeepalive(@NonNull Network network, int slot, int vpnNetId) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(network, slot);
+        // This may happen if the keepalive is removed by the app, and the alarm is fired at the
+        // same time.
+        if (autoKi == null) return;
+
+        handleMonitorTcpConnections(autoKi, vpnNetId);
+    }
+
+    /**
+     * Determine if disable or re-enable keepalive is needed or not based on TCP sockets status.
+     */
+    private void handleMonitorTcpConnections(@NonNull AutomaticOnOffKeepalive ki, int vpnNetId) {
+        if (!isAnyTcpSocketConnected(vpnNetId)) {
+            // No TCP socket exists. Stop keepalive if ENABLED, and remain SUSPENDED if currently
+            // SUSPENDED.
+            if (ki.mAutomaticOnOffState == STATE_ENABLED) {
+                ki.mAutomaticOnOffState = STATE_SUSPENDED;
+                handleSuspendKeepalive(ki.mKi.mNai, ki.mSlot, SUCCESS);
+            }
+        } else {
+            handleMaybeResumeKeepalive(ki);
+        }
+        // TODO: listen to socket status instead of periodically check.
+        startTcpPollingAlarm(ki.mTcpPollingAlarm);
+    }
+
+    /**
+     * Resume keepalive for this slot on this network, if it wasn't already resumed.
+     */
+    public void handleMaybeResumeKeepalive(@NonNull final Network network, final int slot) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(network, slot);
+        // This may happen if the keepalive is removed by the app, and the alarm is fired at
+        // the same time.
+        if (autoKi == null) return;
+        handleMaybeResumeKeepalive(autoKi);
+    }
+
+    private void handleMaybeResumeKeepalive(@NonNull AutomaticOnOffKeepalive autoKi) {
+        if (autoKi.mAutomaticOnOffState == STATE_ENABLED) return;
+        KeepaliveTracker.KeepaliveInfo newKi;
+        try {
+            // Get fd from AutomaticOnOffKeepalive since the fd in the original
+            // KeepaliveInfo should be closed.
+            newKi = autoKi.mKi.withFd(autoKi.mFd);
+        } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
+            Log.e(TAG, "Fail to construct keepalive", e);
+            mKeepaliveTracker.notifyErrorCallback(autoKi.mKi.mCallback, ERROR_INVALID_SOCKET);
+            return;
+        }
+        autoKi.mAutomaticOnOffState = STATE_ENABLED;
+        handleResumeKeepalive(mConnectivityServiceHandler.obtainMessage(
+                NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                autoKi.mAutomaticOnOffState, 0, newKi));
+    }
+
+    private int findAutomaticOnOffKeepaliveIndex(@NonNull Network network, int slot) {
+        ensureRunningOnHandlerThread();
+
+        int index = 0;
+        for (AutomaticOnOffKeepalive ki : mAutomaticOnOffKeepalives) {
+            if (ki.match(network, slot)) {
+                return index;
+            }
+            index++;
+        }
+        return -1;
+    }
+
+    @Nullable
+    private AutomaticOnOffKeepalive findAutomaticOnOffKeepalive(@NonNull Network network,
+            int slot) {
+        ensureRunningOnHandlerThread();
+
+        final int index = findAutomaticOnOffKeepaliveIndex(network, slot);
+        return (index >= 0) ? mAutomaticOnOffKeepalives.get(index) : null;
+    }
+
+    /**
+     * Handle keepalive events from lower layer.
+     *
+     * Forward to KeepaliveTracker.
+     */
+    public void handleEventSocketKeepalive(@NonNull NetworkAgentInfo nai, int slot, int reason) {
+        mKeepaliveTracker.handleEventSocketKeepalive(nai, slot, reason);
+    }
+
+    /**
+     * Handle stop all keepalives on the specific network.
+     */
+    public void handleStopAllKeepalives(NetworkAgentInfo nai, int reason) {
+        mKeepaliveTracker.handleStopAllKeepalives(nai, reason);
+        final List<AutomaticOnOffKeepalive> matches =
+                CollectionUtils.filter(mAutomaticOnOffKeepalives, it -> it.mKi.getNai() == nai);
+        for (final AutomaticOnOffKeepalive ki : matches) {
+            cleanupAutoOnOffKeepalive(ki);
+        }
+    }
+
+    /**
+     * Handle start keepalive contained within a message.
+     *
+     * The message is expected to contain a KeepaliveTracker.KeepaliveInfo.
+     */
+    public void handleStartKeepalive(Message message) {
+        mKeepaliveTracker.handleStartKeepalive(message);
+
+        // Add automatic on/off request into list to track its life cycle.
+        final boolean automaticOnOff = message.arg1 != 0
+                && mDependencies.isFeatureEnabled(AUTOMATIC_ON_OFF_KEEPALIVE_VERSION);
+        if (automaticOnOff) {
+            final KeepaliveTracker.KeepaliveInfo ki = (KeepaliveTracker.KeepaliveInfo) message.obj;
+            AutomaticOnOffKeepalive autoKi;
+            try {
+                // CAREFUL : mKeepaliveTracker.handleStartKeepalive will assign |ki.mSlot| after
+                // pulling |ki| from the message. The constructor below will read this member
+                // (through ki.getSlot()) and therefore actively relies on handleStartKeepalive
+                // having assigned this member before this is called.
+                // TODO : clean this up by assigning the slot at the start of this method instead
+                // and ideally removing the mSlot member from KeepaliveInfo.
+                autoKi = new AutomaticOnOffKeepalive(ki, mContext);
+            } catch (SocketKeepalive.InvalidSocketException | IllegalArgumentException e) {
+                Log.e(TAG, "Fail to construct keepalive", e);
+                mKeepaliveTracker.notifyErrorCallback(ki.mCallback, ERROR_INVALID_SOCKET);
+                return;
+            }
+            mAutomaticOnOffKeepalives.add(autoKi);
+            startTcpPollingAlarm(autoKi.mTcpPollingAlarm);
+        }
+    }
+
+    private void handleResumeKeepalive(Message message) {
+        mKeepaliveTracker.handleStartKeepalive(message);
+    }
+
+    private void handleSuspendKeepalive(NetworkAgentInfo nai, int slot, int reason) {
+        mKeepaliveTracker.handleStopKeepalive(nai, slot, reason);
+    }
+
+    /**
+     * Handle stop keepalives on the specific network with given slot.
+     */
+    public void handleStopKeepalive(NetworkAgentInfo nai, int slot, int reason) {
+        final AutomaticOnOffKeepalive autoKi = findAutomaticOnOffKeepalive(nai.network, slot);
+
+        // Let the original keepalive do the stop first, and then clean up the keepalive if it's an
+        // automatic keepalive.
+        if (autoKi == null || autoKi.mAutomaticOnOffState == STATE_ENABLED) {
+            mKeepaliveTracker.handleStopKeepalive(nai, slot, reason);
+        }
+
+        // Not an AutomaticOnOffKeepalive.
+        if (autoKi == null) return;
+
+        cleanupAutoOnOffKeepalive(autoKi);
+    }
+
+    private void cleanupAutoOnOffKeepalive(@NonNull final AutomaticOnOffKeepalive autoKi) {
+        ensureRunningOnHandlerThread();
+        mAlarmManager.cancel(autoKi.mTcpPollingAlarm);
+        // Close the duplicated fd that maintains the lifecycle of socket.
+        FileUtils.closeQuietly(autoKi.mFd);
+        mAutomaticOnOffKeepalives.remove(autoKi);
+    }
+
+    /**
+     * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
+     * {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+            @Nullable FileDescriptor fd,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb,
+            @NonNull String srcAddrString,
+            int srcPort,
+            @NonNull String dstAddrString,
+            int dstPort, boolean automaticOnOffKeepalives) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeNattKeepaliveInfo(nai, fd,
+                intervalSeconds, cb, srcAddrString, srcPort, dstAddrString, dstPort);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                    // TODO : move ConnectivityService#encodeBool to a static lib.
+                    automaticOnOffKeepalives ? 1 : 0, 0, ki).sendToTarget();
+        }
+    }
+
+    /**
+     * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
+     * {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+            @Nullable FileDescriptor fd,
+            int resourceId,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb,
+            @NonNull String srcAddrString,
+            @NonNull String dstAddrString,
+            int dstPort,
+            boolean automaticOnOffKeepalives) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeNattKeepaliveInfo(nai, fd,
+                resourceId, intervalSeconds, cb, srcAddrString, dstAddrString, dstPort);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(NetworkAgent.CMD_START_SOCKET_KEEPALIVE,
+                    // TODO : move ConnectivityService#encodeBool to a static lib.
+                    automaticOnOffKeepalives ? 1 : 0, 0, ki).sendToTarget();
+        }
+    }
+
+    /**
+     * Called by ConnectivityService to start TCP keepalive on a file descriptor.
+     *
+     * In order to offload keepalive for application correctly, sequence number, ack number and
+     * other fields are needed to form the keepalive packet. Thus, this function synchronously
+     * puts the socket into repair mode to get the necessary information. After the socket has been
+     * put into repair mode, the application cannot access the socket until reverted to normal.
+     * See {@link android.net.SocketKeepalive}.
+     *
+     * Forward to KeepaliveTracker.
+     **/
+    public void startTcpKeepalive(@Nullable NetworkAgentInfo nai,
+            @NonNull FileDescriptor fd,
+            int intervalSeconds,
+            @NonNull ISocketKeepaliveCallback cb) {
+        final KeepaliveTracker.KeepaliveInfo ki = mKeepaliveTracker.makeTcpKeepaliveInfo(nai, fd,
+                intervalSeconds, cb);
+        if (null != ki) {
+            mConnectivityServiceHandler.obtainMessage(CMD_START_SOCKET_KEEPALIVE, ki)
+                    .sendToTarget();
+        }
+    }
+
+    /**
+     * Dump AutomaticOnOffKeepaliveTracker state.
+     */
+    public void dump(IndentingPrintWriter pw) {
+        // TODO: Dump the necessary information for automatic on/off keepalive.
+        mKeepaliveTracker.dump(pw);
+    }
+
+    /**
+     * Check all keepalives on the network are still valid.
+     *
+     * Forward to KeepaliveTracker.
+     */
+    public void handleCheckKeepalivesStillValid(NetworkAgentInfo nai) {
+        mKeepaliveTracker.handleCheckKeepalivesStillValid(nai);
+    }
+
+    @VisibleForTesting
+    boolean isAnyTcpSocketConnected(int netId) {
+        FileDescriptor fd = null;
+
+        try {
+            fd = mDependencies.createConnectedNetlinkSocket();
+
+            // Get network mask
+            final MarkMaskParcel parcel = mNetd.getFwmarkForNetwork(netId);
+            final int networkMark = (parcel != null) ? parcel.mark : NetlinkUtils.UNKNOWN_MARK;
+            final int networkMask = (parcel != null) ? parcel.mask : NetlinkUtils.NULL_MASK;
+
+            // Send request for each IP family
+            for (final int family : ADDRESS_FAMILIES) {
+                if (isAnyTcpSocketConnectedForFamily(fd, family, networkMark, networkMask)) {
+                    return true;
+                }
+            }
+        } catch (ErrnoException | SocketException | InterruptedIOException | RemoteException e) {
+            Log.e(TAG, "Fail to get socket info via netlink.", e);
+        } finally {
+            SocketUtils.closeSocketQuietly(fd);
+        }
+
+        return false;
+    }
+
+    private boolean isAnyTcpSocketConnectedForFamily(FileDescriptor fd, int family, int networkMark,
+            int networkMask) throws ErrnoException, InterruptedIOException {
+        ensureRunningOnHandlerThread();
+        // Build SocketDiag messages and cache it.
+        if (mSockDiagMsg.get(family) == null) {
+            mSockDiagMsg.put(family, InetDiagMessage.buildInetDiagReqForAliveTcpSockets(family));
+        }
+        mDependencies.sendRequest(fd, mSockDiagMsg.get(family));
+
+        // Iteration limitation as a protection to avoid possible infinite loops.
+        // DEFAULT_RECV_BUFSIZE could read more than 20 sockets per time. Max iteration
+        // should be enough to go through reasonable TCP sockets in the device.
+        final int maxIteration = 100;
+        int parsingIteration = 0;
+        while (parsingIteration < maxIteration) {
+            final ByteBuffer bytes = mDependencies.recvSockDiagResponse(fd);
+
+            try {
+                while (NetlinkUtils.enoughBytesRemainForValidNlMsg(bytes)) {
+                    final int startPos = bytes.position();
+
+                    final int nlmsgLen = bytes.getInt();
+                    final int nlmsgType = bytes.getShort();
+                    if (isEndOfMessageOrError(nlmsgType)) return false;
+                    // TODO: Parse InetDiagMessage to get uid and dst address information to filter
+                    //  socket via NetlinkMessage.parse.
+
+                    // Skip the header to move to data part.
+                    bytes.position(startPos + SOCKDIAG_MSG_HEADER_SIZE);
+
+                    if (isTargetTcpSocket(bytes, nlmsgLen, networkMark, networkMask)) {
+                        return true;
+                    }
+                }
+            } catch (BufferUnderflowException e) {
+                // The exception happens in random place in either header position or any data
+                // position. Partial bytes from the middle of the byte buffer may not be enough to
+                // clarify, so print out the content before the error to possibly prevent printing
+                // the whole 8K buffer.
+                final int exceptionPos = bytes.position();
+                final String hex = HexDump.dumpHexString(bytes.array(), 0, exceptionPos);
+                Log.e(TAG, "Unexpected socket info parsing: " + hex, e);
+            }
+
+            parsingIteration++;
+        }
+        return false;
+    }
+
+    private boolean isEndOfMessageOrError(int nlmsgType) {
+        return nlmsgType == NLMSG_DONE || nlmsgType != SOCK_DIAG_BY_FAMILY;
+    }
+
+    private boolean isTargetTcpSocket(@NonNull ByteBuffer bytes, int nlmsgLen, int networkMark,
+            int networkMask) {
+        final int mark = readSocketDataAndReturnMark(bytes, nlmsgLen);
+        return (mark & networkMask) == networkMark;
+    }
+
+    private int readSocketDataAndReturnMark(@NonNull ByteBuffer bytes, int nlmsgLen) {
+        final int nextMsgOffset = bytes.position() + nlmsgLen - SOCKDIAG_MSG_HEADER_SIZE;
+        int mark = NetlinkUtils.INIT_MARK_VALUE;
+        // Get socket mark
+        // TODO: Add a parsing method in NetlinkMessage.parse to support this to skip the remaining
+        //  data.
+        while (bytes.position() < nextMsgOffset) {
+            final StructNlAttr nlattr = StructNlAttr.parse(bytes);
+            if (nlattr != null && nlattr.nla_type == NetlinkUtils.INET_DIAG_MARK) {
+                mark = nlattr.getValueAsInteger();
+            }
+        }
+        return mark;
+    }
+
+    private void ensureRunningOnHandlerThread() {
+        if (mConnectivityServiceHandler.getLooper().getThread() != Thread.currentThread()) {
+            throw new IllegalStateException(
+                    "Not running on handler thread: " + Thread.currentThread().getName());
+        }
+    }
+
+    /**
+     * Dependencies class for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        private final Context mContext;
+
+        public Dependencies(final Context context) {
+            mContext = context;
+        }
+
+        /**
+         * Create a netlink socket connected to the kernel.
+         *
+         * @return fd the fileDescriptor of the socket.
+         */
+        public FileDescriptor createConnectedNetlinkSocket()
+                throws ErrnoException, SocketException {
+            final FileDescriptor fd = NetlinkUtils.createNetLinkInetDiagSocket();
+            NetlinkUtils.connectSocketToNetlink(fd);
+            Os.setsockoptTimeval(fd, SOL_SOCKET, SO_SNDTIMEO,
+                    StructTimeval.fromMillis(IO_TIMEOUT_MS));
+            return fd;
+        }
+
+        /**
+         * Send composed message request to kernel.
+         *
+         * The given FileDescriptor is expected to be created by
+         * {@link #createConnectedNetlinkSocket} or equivalent way.
+         *
+         * @param fd a netlink socket {@code FileDescriptor} connected to the kernel.
+         * @param msg the byte array representing the request message to write to kernel.
+         */
+        public void sendRequest(@NonNull final FileDescriptor fd,
+                @NonNull final byte[] msg)
+                throws ErrnoException, InterruptedIOException {
+            Os.write(fd, msg, 0 /* byteOffset */, msg.length);
+        }
+
+        /**
+         * Get an INetd connector.
+         */
+        public INetd getNetd() {
+            return INetd.Stub.asInterface(
+                    (IBinder) mContext.getSystemService(Context.NETD_SERVICE));
+        }
+
+        /**
+         * Receive the response message from kernel via given {@code FileDescriptor}.
+         * The usage should follow the {@code #sendRequest} call with the same
+         * FileDescriptor.
+         *
+         * The overall response may be large but the individual messages should not be
+         * excessively large(8-16kB) because trying to get the kernel to return
+         * everything in one big buffer is inefficient as it forces the kernel to allocate
+         * large chunks of linearly physically contiguous memory. The usage should iterate the
+         * call of this method until the end of the overall message.
+         *
+         * The default receiving buffer size should be small enough that it is always
+         * processed within the {@link NetlinkUtils#IO_TIMEOUT_MS} timeout.
+         */
+        public ByteBuffer recvSockDiagResponse(@NonNull final FileDescriptor fd)
+                throws ErrnoException, InterruptedIOException {
+            return NetlinkUtils.recvMessage(
+                    fd, NetlinkUtils.DEFAULT_RECV_BUFSIZE, NetlinkUtils.IO_TIMEOUT_MS);
+        }
+
+        /**
+         * Construct a new KeepaliveTracker.
+         */
+        public KeepaliveTracker newKeepaliveTracker(@NonNull Context context,
+                @NonNull Handler connectivityserviceHander) {
+            return new KeepaliveTracker(mContext, connectivityserviceHander);
+        }
+
+        /**
+         * Find out if a feature is enabled from DeviceConfig.
+         *
+         * @param name The name of the property to look up.
+         * @return whether the feature is enabled
+         */
+        public boolean isFeatureEnabled(@NonNull final String name) {
+            return DeviceConfigUtils.isFeatureEnabled(mContext, NAMESPACE_CONNECTIVITY, name);
+        }
+    }
+}
diff --git a/service/src/com/android/server/connectivity/KeepaliveTracker.java b/service/src/com/android/server/connectivity/KeepaliveTracker.java
index 3b58823..03f8f3e 100644
--- a/service/src/com/android/server/connectivity/KeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveTracker.java
@@ -18,7 +18,6 @@
 
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.net.NattSocketKeepalive.NATT_PORT;
-import static android.net.NetworkAgent.CMD_START_SOCKET_KEEPALIVE;
 import static android.net.SocketKeepalive.BINDER_DIED;
 import static android.net.SocketKeepalive.DATA_RECEIVED;
 import static android.net.SocketKeepalive.ERROR_INSUFFICIENT_RESOURCES;
@@ -88,7 +87,6 @@
     /** Keeps track of keepalive requests. */
     private final HashMap <NetworkAgentInfo, HashMap<Integer, KeepaliveInfo>> mKeepalives =
             new HashMap<> ();
-    private final Handler mConnectivityServiceHandler;
     @NonNull
     private final TcpKeepaliveController mTcpController;
     @NonNull
@@ -109,9 +107,9 @@
     private final int mAllowedUnprivilegedSlotsForUid;
 
     public KeepaliveTracker(Context context, Handler handler) {
-        mConnectivityServiceHandler = handler;
         mTcpController = new TcpKeepaliveController(handler);
         mContext = context;
+
         mSupportedKeepalives = KeepaliveUtils.getSupportedKeepalives(mContext);
 
         final ConnectivityResources res = new ConnectivityResources(mContext);
@@ -129,13 +127,13 @@
      */
     class KeepaliveInfo implements IBinder.DeathRecipient {
         // Bookkeeping data.
-        private final ISocketKeepaliveCallback mCallback;
+        public final ISocketKeepaliveCallback mCallback;
         private final int mUid;
         private final int mPid;
         private final boolean mPrivileged;
-        private final NetworkAgentInfo mNai;
+        public final NetworkAgentInfo mNai;
         private final int mType;
-        private final FileDescriptor mFd;
+        public final FileDescriptor mFd;
 
         public static final int TYPE_NATT = 1;
         public static final int TYPE_TCP = 2;
@@ -243,6 +241,10 @@
             }
         }
 
+        public int getSlot() {
+            return mSlot;
+        }
+
         private int checkNetworkConnected() {
             if (!mNai.networkInfo.isConnectedOrConnecting()) {
                 return ERROR_INVALID_NETWORK;
@@ -415,6 +417,13 @@
         void onFileDescriptorInitiatedStop(final int socketKeepaliveReason) {
             handleStopKeepalive(mNai, mSlot, socketKeepaliveReason);
         }
+
+        /**
+         * Construct a new KeepaliveInfo from existing KeepaliveInfo with a new fd.
+         */
+        public KeepaliveInfo withFd(@NonNull FileDescriptor fd) throws InvalidSocketException {
+            return new KeepaliveInfo(mCallback, mNai, mPacket, mInterval, mType, fd);
+        }
     }
 
     void notifyErrorCallback(ISocketKeepaliveCallback cb, int error) {
@@ -444,6 +453,9 @@
         return slot;
     }
 
+    /**
+     * Handle start keepalives with the message.
+     */
     public void handleStartKeepalive(Message message) {
         KeepaliveInfo ki = (KeepaliveInfo) message.obj;
         NetworkAgentInfo nai = ki.getNai();
@@ -604,7 +616,8 @@
      * Called when requesting that keepalives be started on a IPsec NAT-T socket. See
      * {@link android.net.SocketKeepalive}.
      **/
-    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+    @Nullable
+    public KeepaliveInfo makeNattKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @Nullable FileDescriptor fd,
             int intervalSeconds,
             @NonNull ISocketKeepaliveCallback cb,
@@ -614,7 +627,7 @@
             int dstPort) {
         if (nai == null) {
             notifyErrorCallback(cb, ERROR_INVALID_NETWORK);
-            return;
+            return null;
         }
 
         InetAddress srcAddress, dstAddress;
@@ -623,7 +636,7 @@
             dstAddress = InetAddresses.parseNumericAddress(dstAddrString);
         } catch (IllegalArgumentException e) {
             notifyErrorCallback(cb, ERROR_INVALID_IP_ADDRESS);
-            return;
+            return null;
         }
 
         KeepalivePacketData packet;
@@ -632,7 +645,7 @@
                     srcAddress, srcPort, dstAddress, NATT_PORT);
         } catch (InvalidPacketException e) {
             notifyErrorCallback(cb, e.getError());
-            return;
+            return null;
         }
         KeepaliveInfo ki = null;
         try {
@@ -641,15 +654,14 @@
         } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
             Log.e(TAG, "Fail to construct keepalive", e);
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
-            return;
+            return null;
         }
-        Log.d(TAG, "Created keepalive: " + ki.toString());
-        mConnectivityServiceHandler.obtainMessage(
-                NetworkAgent.CMD_START_SOCKET_KEEPALIVE, ki).sendToTarget();
+        Log.d(TAG, "Created keepalive: " + ki);
+        return ki;
     }
 
     /**
-     * Called by ConnectivityService to start TCP keepalive on a file descriptor.
+     * Make a KeepaliveInfo for a TCP socket.
      *
      * In order to offload keepalive for application correctly, sequence number, ack number and
      * other fields are needed to form the keepalive packet. Thus, this function synchronously
@@ -658,13 +670,14 @@
      *
      * See {@link android.net.SocketKeepalive}.
      **/
-    public void startTcpKeepalive(@Nullable NetworkAgentInfo nai,
+    @Nullable
+    public KeepaliveInfo makeTcpKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @NonNull FileDescriptor fd,
             int intervalSeconds,
             @NonNull ISocketKeepaliveCallback cb) {
         if (nai == null) {
             notifyErrorCallback(cb, ERROR_INVALID_NETWORK);
-            return;
+            return null;
         }
 
         final TcpKeepalivePacketData packet;
@@ -672,10 +685,10 @@
             packet = TcpKeepaliveController.getTcpKeepalivePacket(fd);
         } catch (InvalidSocketException e) {
             notifyErrorCallback(cb, e.error);
-            return;
+            return null;
         } catch (InvalidPacketException e) {
             notifyErrorCallback(cb, e.getError());
-            return;
+            return null;
         }
         KeepaliveInfo ki = null;
         try {
@@ -684,20 +697,22 @@
         } catch (InvalidSocketException | IllegalArgumentException | SecurityException e) {
             Log.e(TAG, "Fail to construct keepalive e=" + e);
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
-            return;
+            return null;
         }
         Log.d(TAG, "Created keepalive: " + ki.toString());
-        mConnectivityServiceHandler.obtainMessage(CMD_START_SOCKET_KEEPALIVE, ki).sendToTarget();
+        return ki;
     }
 
-   /**
-    * Called when requesting that keepalives be started on a IPsec NAT-T socket. This function is
-    * identical to {@link #startNattKeepalive}, but also takes a {@code resourceId}, which is the
-    * resource index bound to the {@link UdpEncapsulationSocket} when creating by
-    * {@link com.android.server.IpSecService} to verify whether the given
-    * {@link UdpEncapsulationSocket} is legitimate.
-    **/
-    public void startNattKeepalive(@Nullable NetworkAgentInfo nai,
+    /**
+     * Make a KeepaliveInfo for an IPSec NAT-T socket.
+     *
+     * This function is identical to {@link #makeNattKeepaliveInfo}, but also takes a
+     * {@code resourceId}, which is the resource index bound to the {@link UdpEncapsulationSocket}
+     * when creating by {@link com.android.server.IpSecService} to verify whether the given
+     * {@link UdpEncapsulationSocket} is legitimate.
+     **/
+    @Nullable
+    public KeepaliveInfo makeNattKeepaliveInfo(@Nullable NetworkAgentInfo nai,
             @Nullable FileDescriptor fd,
             int resourceId,
             int intervalSeconds,
@@ -708,6 +723,7 @@
         // Ensure that the socket is created by IpSecService.
         if (!isNattKeepaliveSocketValid(fd, resourceId)) {
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
+            return null;
         }
 
         // Get src port to adopt old API.
@@ -717,10 +733,11 @@
             srcPort = ((InetSocketAddress) srcSockAddr).getPort();
         } catch (ErrnoException e) {
             notifyErrorCallback(cb, ERROR_INVALID_SOCKET);
+            return null;
         }
 
         // Forward request to old API.
-        startNattKeepalive(nai, fd, intervalSeconds, cb, srcAddrString, srcPort,
+        return makeNattKeepaliveInfo(nai, fd, intervalSeconds, cb, srcAddrString, srcPort,
                 dstAddrString, dstPort);
     }
 
@@ -739,6 +756,9 @@
         return true;
     }
 
+    /**
+     * Dump KeepaliveTracker state.
+     */
     public void dump(IndentingPrintWriter pw) {
         pw.println("Supported Socket keepalives: " + Arrays.toString(mSupportedKeepalives));
         pw.println("Reserved Privileged keepalives: " + mReservedPrivilegedSlots);
diff --git a/service/src/com/android/server/connectivity/ProfileNetworkPreferenceInfo.java b/service/src/com/android/server/connectivity/ProfileNetworkPreferenceInfo.java
index 10f3886..7679660 100644
--- a/service/src/com/android/server/connectivity/ProfileNetworkPreferenceInfo.java
+++ b/service/src/com/android/server/connectivity/ProfileNetworkPreferenceInfo.java
@@ -32,13 +32,15 @@
     @Nullable
     public final NetworkCapabilities capabilities;
     public final boolean allowFallback;
+    public final boolean blockingNonEnterprise;
 
     public ProfileNetworkPreferenceInfo(@NonNull final UserHandle user,
             @Nullable final NetworkCapabilities capabilities,
-            final boolean allowFallback) {
+            final boolean allowFallback, final boolean blockingNonEnterprise) {
         this.user = user;
         this.capabilities = null == capabilities ? null : new NetworkCapabilities(capabilities);
         this.allowFallback = allowFallback;
+        this.blockingNonEnterprise = blockingNonEnterprise;
     }
 
     @Override
@@ -57,6 +59,7 @@
         return "[ProfileNetworkPreference user=" + user
                 + " caps=" + capabilities
                 + " allowFallback=" + allowFallback
+                + " blockingNonEnterprise=" + blockingNonEnterprise
                 + "]";
     }
 }
diff --git a/tests/common/java/android/net/netstats/NetworkTemplateTest.kt b/tests/common/java/android/net/netstats/NetworkTemplateTest.kt
index 3c2340c..99f1e0b 100644
--- a/tests/common/java/android/net/netstats/NetworkTemplateTest.kt
+++ b/tests/common/java/android/net/netstats/NetworkTemplateTest.kt
@@ -26,10 +26,8 @@
 import android.net.NetworkTemplate.MATCH_CARRIER
 import android.net.NetworkTemplate.MATCH_ETHERNET
 import android.net.NetworkTemplate.MATCH_MOBILE
-import android.net.NetworkTemplate.MATCH_MOBILE_WILDCARD
 import android.net.NetworkTemplate.MATCH_PROXY
 import android.net.NetworkTemplate.MATCH_WIFI
-import android.net.NetworkTemplate.MATCH_WIFI_WILDCARD
 import android.net.NetworkTemplate.NETWORK_TYPE_ALL
 import android.net.NetworkTemplate.OEM_MANAGED_ALL
 import android.telephony.TelephonyManager
@@ -64,10 +62,8 @@
         }
 
         // Verify hidden match rules cannot construct templates.
-        listOf(MATCH_WIFI_WILDCARD, MATCH_MOBILE_WILDCARD, MATCH_PROXY).forEach {
-            assertFailsWith<IllegalArgumentException> {
-                NetworkTemplate.Builder(it).build()
-            }
+        assertFailsWith<IllegalArgumentException> {
+            NetworkTemplate.Builder(MATCH_PROXY).build()
         }
 
         // Verify template which matches metered cellular and carrier networks with
@@ -75,10 +71,9 @@
         listOf(MATCH_MOBILE, MATCH_CARRIER).forEach { matchRule ->
             NetworkTemplate.Builder(matchRule).setSubscriberIds(setOf(TEST_IMSI1))
                     .setMeteredness(METERED_YES).build().let {
-                        val expectedTemplate = NetworkTemplate(matchRule, TEST_IMSI1,
-                                arrayOf(TEST_IMSI1), emptyArray<String>(), METERED_YES,
-                                ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
-                                OEM_MANAGED_ALL)
+                        val expectedTemplate = NetworkTemplate(matchRule, arrayOf(TEST_IMSI1),
+                                emptyArray<String>(), METERED_YES, ROAMING_ALL, DEFAULT_NETWORK_ALL,
+                                NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
                         assertEquals(expectedTemplate, it)
                     }
         }
@@ -88,10 +83,9 @@
         listOf(MATCH_MOBILE, MATCH_CARRIER).forEach { matchRule ->
             NetworkTemplate.Builder(matchRule).setSubscriberIds(setOf(TEST_IMSI1))
                     .setRoaming(ROAMING_YES).setMeteredness(METERED_YES).build().let {
-                        val expectedTemplate = NetworkTemplate(matchRule, TEST_IMSI1,
-                                arrayOf(TEST_IMSI1), emptyArray<String>(), METERED_YES,
-                                ROAMING_YES, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
-                                OEM_MANAGED_ALL)
+                        val expectedTemplate = NetworkTemplate(matchRule, arrayOf(TEST_IMSI1),
+                                emptyArray<String>(), METERED_YES, ROAMING_YES, DEFAULT_NETWORK_ALL,
+                                NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
                         assertEquals(expectedTemplate, it)
                     }
         }
@@ -104,42 +98,39 @@
         // Verify template which matches metered cellular networks,
         // regardless of IMSI. See buildTemplateMobileWildcard.
         NetworkTemplate.Builder(MATCH_MOBILE).setMeteredness(METERED_YES).build().let {
-            val expectedTemplate = NetworkTemplate(MATCH_MOBILE_WILDCARD, null /*subscriberId*/,
-                    emptyArray<String>() /*subscriberIds*/, emptyArray<String>(),
+            val expectedTemplate = NetworkTemplate(MATCH_MOBILE,
+                    emptyArray<String>() /*subscriberIds*/, emptyArray<String>() /*wifiNetworkKey*/,
                     METERED_YES, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
                     OEM_MANAGED_ALL)
             assertEquals(expectedTemplate, it)
         }
 
         // Verify template which matches metered cellular networks and ratType.
-        // See NetworkTemplate#buildTemplateMobileWithRatType.
         NetworkTemplate.Builder(MATCH_MOBILE).setSubscriberIds(setOf(TEST_IMSI1))
                 .setMeteredness(METERED_YES).setRatType(TelephonyManager.NETWORK_TYPE_UMTS)
                 .build().let {
-                    val expectedTemplate = NetworkTemplate(MATCH_MOBILE, TEST_IMSI1,
-                            arrayOf(TEST_IMSI1), emptyArray<String>(), METERED_YES,
-                            ROAMING_ALL, DEFAULT_NETWORK_ALL, TelephonyManager.NETWORK_TYPE_UMTS,
-                            OEM_MANAGED_ALL)
+                    val expectedTemplate = NetworkTemplate(MATCH_MOBILE, arrayOf(TEST_IMSI1),
+                            emptyArray<String>(), METERED_YES, ROAMING_ALL, DEFAULT_NETWORK_ALL,
+                            TelephonyManager.NETWORK_TYPE_UMTS, OEM_MANAGED_ALL)
                     assertEquals(expectedTemplate, it)
                 }
 
         // Verify template which matches all wifi networks,
         // regardless of Wifi Network Key. See buildTemplateWifiWildcard and buildTemplateWifi.
         NetworkTemplate.Builder(MATCH_WIFI).build().let {
-            val expectedTemplate = NetworkTemplate(MATCH_WIFI_WILDCARD, null /*subscriberId*/,
-                    emptyArray<String>() /*subscriberIds*/, emptyArray<String>(),
-                    METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
-                    OEM_MANAGED_ALL)
+            val expectedTemplate = NetworkTemplate(MATCH_WIFI,
+                    emptyArray<String>() /*subscriberIds*/, emptyArray<String>(), METERED_ALL,
+                    ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
             assertEquals(expectedTemplate, it)
         }
 
         // Verify template which matches wifi networks with the given Wifi Network Key.
         // See buildTemplateWifi(wifiNetworkKey).
         NetworkTemplate.Builder(MATCH_WIFI).setWifiNetworkKeys(setOf(TEST_WIFI_KEY1)).build().let {
-            val expectedTemplate = NetworkTemplate(MATCH_WIFI, null /*subscriberId*/,
-                    emptyArray<String>() /*subscriberIds*/, arrayOf(TEST_WIFI_KEY1),
-                    METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
-                    OEM_MANAGED_ALL)
+            val expectedTemplate =
+                    NetworkTemplate(MATCH_WIFI, emptyArray<String>() /*subscriberIds*/,
+                    arrayOf(TEST_WIFI_KEY1), METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL,
+                    NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
             assertEquals(expectedTemplate, it)
         }
 
@@ -147,10 +138,9 @@
         // given Wifi Network Key, and IMSI. See buildTemplateWifi(wifiNetworkKey, subscriberId).
         NetworkTemplate.Builder(MATCH_WIFI).setSubscriberIds(setOf(TEST_IMSI1))
                 .setWifiNetworkKeys(setOf(TEST_WIFI_KEY1)).build().let {
-                    val expectedTemplate = NetworkTemplate(MATCH_WIFI, TEST_IMSI1,
-                            arrayOf(TEST_IMSI1), arrayOf(TEST_WIFI_KEY1),
-                            METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
-                            OEM_MANAGED_ALL)
+                    val expectedTemplate = NetworkTemplate(MATCH_WIFI, arrayOf(TEST_IMSI1),
+                            arrayOf(TEST_WIFI_KEY1), METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL,
+                            NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
                     assertEquals(expectedTemplate, it)
                 }
 
@@ -158,7 +148,7 @@
         // See buildTemplateEthernet and buildTemplateBluetooth.
         listOf(MATCH_ETHERNET, MATCH_BLUETOOTH).forEach { matchRule ->
             NetworkTemplate.Builder(matchRule).build().let {
-                val expectedTemplate = NetworkTemplate(matchRule, null /*subscriberId*/,
+                val expectedTemplate = NetworkTemplate(matchRule,
                         emptyArray<String>() /*subscriberIds*/, emptyArray<String>(),
                         METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
                         OEM_MANAGED_ALL)
@@ -193,7 +183,7 @@
 
         // Verify template which matches wifi wildcard with the given empty key set.
         NetworkTemplate.Builder(MATCH_WIFI).setWifiNetworkKeys(setOf<String>()).build().let {
-            val expectedTemplate = NetworkTemplate(MATCH_WIFI_WILDCARD, null /*subscriberId*/,
+            val expectedTemplate = NetworkTemplate(MATCH_WIFI,
                     emptyArray<String>() /*subscriberIds*/, emptyArray<String>(),
                     METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL,
                     OEM_MANAGED_ALL)
diff --git a/tests/cts/OWNERS b/tests/cts/OWNERS
index 089d06f..8388cb7 100644
--- a/tests/cts/OWNERS
+++ b/tests/cts/OWNERS
@@ -2,6 +2,5 @@
 set noparent
 file:platform/packages/modules/Connectivity:master:/OWNERS_core_networking_xts
 
-# Only temporary ownership to improve ethernet code quality (b/236280707)
-# TODO: remove by 12/31/2022
-per-file net/src/android/net/cts/EthernetManagerTest.kt = prohr@google.com #{LAST_RESORT_SUGGESTION}
+# IPsec
+per-file **IpSec* = benedictwong@google.com, nharold@google.com
diff --git a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
index 98b12a0..f596b79 100644
--- a/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/ConnectivityManagerTest.java
@@ -2394,7 +2394,7 @@
             getHistory().add(new CallbackEntry.BlockedStatusInt(network, blockedReasons));
         }
         private void assertNoBlockedStatusCallback() {
-            super.assertNoCallbackThat(NO_CALLBACK_TIMEOUT_MS,
+            super.assertNoCallback(NO_CALLBACK_TIMEOUT_MS,
                     c -> c instanceof CallbackEntry.BlockedStatus);
         }
     }
@@ -2982,7 +2982,7 @@
             defaultCb.eventuallyExpect(CallbackEntry.AVAILABLE, NETWORK_CALLBACK_TIMEOUT_MS,
                     entry -> cellNetwork.equals(entry.getNetwork()));
             // The network should not validate again.
-            wifiCb.assertNoCallbackThat(NO_CALLBACK_TIMEOUT_MS, c -> isValidatedCaps(c));
+            wifiCb.assertNoCallback(NO_CALLBACK_TIMEOUT_MS, c -> isValidatedCaps(c));
         } finally {
             resetAvoidBadWifi(previousAvoidBadWifi);
             mHttpServer.stop();
@@ -3154,7 +3154,7 @@
      */
     private void assertNoCallbackExceptCapOrLpChange(
             @NonNull final TestableNetworkCallback cb) {
-        cb.assertNoCallbackThat(NO_CALLBACK_TIMEOUT_MS,
+        cb.assertNoCallback(NO_CALLBACK_TIMEOUT_MS,
                 c -> !(c instanceof CallbackEntry.CapabilitiesChanged
                         || c instanceof CallbackEntry.LinkPropertiesChanged));
     }
diff --git a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
index 7e91478..b924f65 100644
--- a/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/EthernetManagerTest.kt
@@ -57,8 +57,8 @@
 import android.os.Handler
 import android.os.Looper
 import android.os.OutcomeReceiver
-import android.os.SystemProperties
 import android.os.Process
+import android.os.SystemProperties
 import android.platform.test.annotations.AppModeFull
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.net.module.util.ArrayTrackRecord
@@ -77,16 +77,10 @@
 import com.android.testutils.assertThrows
 import com.android.testutils.runAsShell
 import com.android.testutils.waitForIdle
-import org.junit.After
-import org.junit.Assume.assumeFalse
-import org.junit.Assume.assumeTrue
-import org.junit.Before
-import org.junit.Test
-import org.junit.runner.RunWith
 import java.io.IOException
 import java.net.Inet6Address
-import java.util.Random
 import java.net.Socket
+import java.util.Random
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.ExecutionException
 import java.util.concurrent.TimeUnit
@@ -99,6 +93,12 @@
 import kotlin.test.assertNull
 import kotlin.test.assertTrue
 import kotlin.test.fail
+import org.junit.After
+import org.junit.Assume.assumeFalse
+import org.junit.Assume.assumeTrue
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
 
 private const val TAG = "EthernetManagerTest"
 // This timeout does not affect the test duration for passing tests. It needs to be long enough to
@@ -530,12 +530,10 @@
         eventuallyExpect(Lost::class) { n?.equals(it.network) ?: true }
 
     private fun TestableNetworkCallback.assertNeverLost(n: Network? = null) =
-        assertNoCallbackThat() {
-            it is Lost && (n?.equals(it.network) ?: true)
-        }
+        assertNoCallback { it is Lost && (n?.equals(it.network) ?: true) }
 
     private fun TestableNetworkCallback.assertNeverAvailable(n: Network? = null) =
-        assertNoCallbackThat { it is Available && (n?.equals(it.network) ?: true) }
+        assertNoCallback { it is Available && (n?.equals(it.network) ?: true) }
 
     private fun TestableNetworkCallback.expectCapabilitiesWithInterfaceName(name: String) =
         expect<CapabilitiesChanged> { it.caps.networkSpecifier == EthernetNetworkSpecifier(name) }
diff --git a/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java b/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
index a9a3380..5fc3068 100644
--- a/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
+++ b/tests/cts/net/src/android/net/cts/IpSecManagerTunnelTest.java
@@ -32,10 +32,13 @@
 import static android.system.OsConstants.AF_INET;
 import static android.system.OsConstants.AF_INET6;
 
+import static com.android.compatibility.common.util.PropertyUtil.getVsrApiLevel;
+
 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 static org.junit.Assume.assumeTrue;
 
@@ -80,6 +83,11 @@
 
     private static final String TAG = IpSecManagerTunnelTest.class.getSimpleName();
 
+    // Redefine this flag here so that IPsec code shipped in a mainline module can build on old
+    // platforms before FEATURE_IPSEC_TUNNEL_MIGRATION API is released.
+    private static final String FEATURE_IPSEC_TUNNEL_MIGRATION =
+            "android.software.ipsec_tunnel_migration";
+
     private static final InetAddress LOCAL_OUTER_4 = InetAddress.parseNumericAddress("192.0.2.1");
     private static final InetAddress REMOTE_OUTER_4 = InetAddress.parseNumericAddress("192.0.2.2");
     private static final InetAddress LOCAL_OUTER_6 =
@@ -994,6 +1002,41 @@
         checkTunnelInput(innerFamily, outerFamily, useEncap, transportInTunnelMode);
     }
 
+    /** Checks if FEATURE_IPSEC_TUNNEL_MIGRATION is enabled on the device */
+    private static boolean hasIpsecTunnelMigrateFeature() {
+        return sContext.getPackageManager().hasSystemFeature(FEATURE_IPSEC_TUNNEL_MIGRATION);
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+    @Test
+    public void testHasIpSecTunnelMigrateFeature() throws Exception {
+        // FEATURE_IPSEC_TUNNEL_MIGRATION is required when VSR API is U/U+
+        if (getVsrApiLevel() > Build.VERSION_CODES.TIRAMISU) {
+            assertTrue(hasIpsecTunnelMigrateFeature());
+        }
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+    @Test
+    public void testMigrateTunnelModeTransform() throws Exception {
+        assumeTrue(mCtsNetUtils.hasIpsecTunnelsFeature());
+        assumeTrue(hasIpsecTunnelMigrateFeature());
+
+        IpSecTransform.Builder transformBuilder = new IpSecTransform.Builder(sContext);
+        transformBuilder.setEncryption(new IpSecAlgorithm(IpSecAlgorithm.CRYPT_AES_CBC, CRYPT_KEY));
+        transformBuilder.setAuthentication(
+                new IpSecAlgorithm(IpSecAlgorithm.AUTH_HMAC_SHA256, AUTH_KEY, AUTH_KEY.length * 4));
+        int spi = getRandomSpi(LOCAL_OUTER_4, REMOTE_OUTER_4);
+
+        try (IpSecManager.SecurityParameterIndex outSpi =
+                        mISM.allocateSecurityParameterIndex(REMOTE_OUTER_4, spi);
+                IpSecTransform outTunnelTransform =
+                        transformBuilder.buildTunnelModeTransform(LOCAL_INNER_4, outSpi)) {
+            mISM.startTunnelModeTransformMigration(
+                    outTunnelTransform, LOCAL_OUTER_4_NEW, REMOTE_OUTER_4_NEW);
+        }
+    }
+
     // Transport-in-Tunnel mode tests
     @Test
     public void testTransportInTunnelModeV4InV4() throws Exception {
diff --git a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
index 2b5c305..b7eb009 100644
--- a/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
+++ b/tests/cts/net/src/android/net/cts/NsdManagerTest.kt
@@ -41,7 +41,9 @@
 import android.net.cts.NsdManagerTest.NsdRegistrationRecord.RegistrationEvent.ServiceUnregistered
 import android.net.cts.NsdManagerTest.NsdRegistrationRecord.RegistrationEvent.UnregistrationFailed
 import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ResolveFailed
+import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ResolveStopped
 import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.ServiceResolved
+import android.net.cts.NsdManagerTest.NsdResolveRecord.ResolveEvent.StopResolutionFailed
 import android.net.nsd.NsdManager
 import android.net.nsd.NsdManager.DiscoveryListener
 import android.net.nsd.NsdManager.RegistrationListener
@@ -66,15 +68,6 @@
 import com.android.testutils.runAsShell
 import com.android.testutils.tryTest
 import com.android.testutils.waitForIdle
-import org.junit.After
-import org.junit.Assert.assertArrayEquals
-import org.junit.Assert.assertFalse
-import org.junit.Assert.assertTrue
-import org.junit.Assume.assumeTrue
-import org.junit.Before
-import org.junit.Rule
-import org.junit.Test
-import org.junit.runner.RunWith
 import java.io.File
 import java.net.ServerSocket
 import java.nio.charset.StandardCharsets
@@ -86,6 +79,15 @@
 import kotlin.test.assertNull
 import kotlin.test.assertTrue
 import kotlin.test.fail
+import org.junit.After
+import org.junit.Assert.assertArrayEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Assume.assumeTrue
+import org.junit.Before
+import org.junit.Rule
+import org.junit.Test
+import org.junit.runner.RunWith
 
 private const val TAG = "NsdManagerTest"
 private const val TIMEOUT_MS = 2000L
@@ -182,10 +184,10 @@
                 val errorCode: Int
             ) : RegistrationEvent()
 
-            data class ServiceRegistered(override val serviceInfo: NsdServiceInfo)
-                : RegistrationEvent()
-            data class ServiceUnregistered(override val serviceInfo: NsdServiceInfo)
-                : RegistrationEvent()
+            data class ServiceRegistered(override val serviceInfo: NsdServiceInfo) :
+                    RegistrationEvent()
+            data class ServiceUnregistered(override val serviceInfo: NsdServiceInfo) :
+                    RegistrationEvent()
         }
 
         override fun onRegistrationFailed(si: NsdServiceInfo, err: Int) {
@@ -208,11 +210,11 @@
     private class NsdDiscoveryRecord(expectedThreadId: Int? = null) :
             DiscoveryListener, NsdRecord<NsdDiscoveryRecord.DiscoveryEvent>(expectedThreadId) {
         sealed class DiscoveryEvent : NsdEvent {
-            data class StartDiscoveryFailed(val serviceType: String, val errorCode: Int)
-                : DiscoveryEvent()
+            data class StartDiscoveryFailed(val serviceType: String, val errorCode: Int) :
+                    DiscoveryEvent()
 
-            data class StopDiscoveryFailed(val serviceType: String, val errorCode: Int)
-                : DiscoveryEvent()
+            data class StopDiscoveryFailed(val serviceType: String, val errorCode: Int) :
+                    DiscoveryEvent()
 
             data class DiscoveryStarted(val serviceType: String) : DiscoveryEvent()
             data class DiscoveryStopped(val serviceType: String) : DiscoveryEvent()
@@ -259,10 +261,13 @@
     private class NsdResolveRecord : ResolveListener,
             NsdRecord<NsdResolveRecord.ResolveEvent>() {
         sealed class ResolveEvent : NsdEvent {
-            data class ResolveFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int)
-                : ResolveEvent()
+            data class ResolveFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int) :
+                    ResolveEvent()
 
             data class ServiceResolved(val serviceInfo: NsdServiceInfo) : ResolveEvent()
+            data class ResolveStopped(val serviceInfo: NsdServiceInfo) : ResolveEvent()
+            data class StopResolutionFailed(val serviceInfo: NsdServiceInfo, val errorCode: Int) :
+                    ResolveEvent()
         }
 
         override fun onResolveFailed(si: NsdServiceInfo, err: Int) {
@@ -272,6 +277,14 @@
         override fun onServiceResolved(si: NsdServiceInfo) {
             add(ServiceResolved(si))
         }
+
+        override fun onResolveStopped(si: NsdServiceInfo) {
+            add(ResolveStopped(si))
+        }
+
+        override fun onStopResolutionFailed(si: NsdServiceInfo, err: Int) {
+            add(StopResolutionFailed(si, err))
+        }
     }
 
     @Before
@@ -739,6 +752,26 @@
                 NsdManager.RUN_NATIVE_NSD_ONLY_IF_LEGACY_APPS_T_AND_LATER))
     }
 
+    @Test
+    fun testStopServiceResolution() {
+        // This test requires shims supporting U+ APIs (NsdManager.stopServiceResolution)
+        assumeTrue(TestUtils.shouldTestUApis())
+
+        val si = NsdServiceInfo()
+        si.serviceType = this@NsdManagerTest.serviceType
+        si.serviceName = this@NsdManagerTest.serviceName
+        si.port = 12345 // Test won't try to connect so port does not matter
+
+        val resolveRecord = NsdResolveRecord()
+        // Try to resolve an unknown service then stop it immediately.
+        // Expected ResolveStopped callback.
+        nsdShim.resolveService(nsdManager, si, { it.run() }, resolveRecord)
+        nsdShim.stopServiceResolution(nsdManager, resolveRecord)
+        val stoppedCb = resolveRecord.expectCallback<ResolveStopped>()
+        assertEquals(si.serviceName, stoppedCb.serviceInfo.serviceName)
+        assertEquals(si.serviceType, stoppedCb.serviceInfo.serviceType)
+    }
+
     /**
      * Register a service and return its registration record.
      */
diff --git a/tests/cts/net/src/android/net/cts/RateLimitTest.java b/tests/cts/net/src/android/net/cts/RateLimitTest.java
index 28cec1a..36b98fc 100644
--- a/tests/cts/net/src/android/net/cts/RateLimitTest.java
+++ b/tests/cts/net/src/android/net/cts/RateLimitTest.java
@@ -301,29 +301,32 @@
     public void testIngressRateLimit_testLimit() throws Exception {
         assumeKernelSupport();
 
+        // These tests are not very precise, especially on lower-end devices.
+        // Add 30% tolerance to reduce test flakiness. Burst size is constant at 128KiB.
+        final double toleranceFactor = 1.3;
+
         // If this value is too low, this test might become flaky because of the burst value that
         // allows to send at a higher data rate for a short period of time. The faster the data rate
         // and the longer the test, the less this test will be affected.
         final long dataLimitInBytesPerSecond = 2_000_000; // 2MB/s
         long resultInBytesPerSecond = runIngressDataRateMeasurement(Duration.ofSeconds(1));
         assertGreaterThan("Failed initial test with rate limit disabled", resultInBytesPerSecond,
-                dataLimitInBytesPerSecond);
+                (long) (dataLimitInBytesPerSecond * toleranceFactor));
 
         // enable rate limit and wait until the tc filter is installed before starting the test.
         ConnectivitySettingsManager.setIngressRateLimitInBytesPerSecond(mContext,
                 dataLimitInBytesPerSecond);
         waitForTcPoliceFilterInstalled(Duration.ofSeconds(1));
 
-        resultInBytesPerSecond = runIngressDataRateMeasurement(Duration.ofSeconds(10));
-        // Add 10% tolerance to reduce test flakiness. Burst size is constant at 128KiB.
+        resultInBytesPerSecond = runIngressDataRateMeasurement(Duration.ofSeconds(15));
         assertLessThan("Failed test with rate limit enabled", resultInBytesPerSecond,
-                (long) (dataLimitInBytesPerSecond * 1.1));
+                (long) (dataLimitInBytesPerSecond * toleranceFactor));
 
         ConnectivitySettingsManager.setIngressRateLimitInBytesPerSecond(mContext, -1);
 
         resultInBytesPerSecond = runIngressDataRateMeasurement(Duration.ofSeconds(1));
         assertGreaterThan("Failed test with rate limit disabled", resultInBytesPerSecond,
-                dataLimitInBytesPerSecond);
+                (long) (dataLimitInBytesPerSecond * toleranceFactor));
     }
 
     @Test
diff --git a/tests/unit/Android.bp b/tests/unit/Android.bp
index 209430a..e0de246 100644
--- a/tests/unit/Android.bp
+++ b/tests/unit/Android.bp
@@ -73,8 +73,6 @@
         "java/com/android/server/connectivity/NetdEventListenerServiceTest.java",
         "java/com/android/server/connectivity/VpnTest.java",
         "java/com/android/server/net/ipmemorystore/*.java",
-        "java/com/android/server/connectivity/mdns/**/*.java",
-        "java/com/android/server/connectivity/mdns/**/*.kt",
     ]
 }
 
@@ -149,7 +147,6 @@
     static_libs: [
         "services.core",
         "services.net",
-        "service-mdns",
     ],
     jni_libs: [
         "libandroid_net_connectivity_com_android_net_module_util_jni",
diff --git a/tests/unit/java/android/net/IpSecTransformTest.java b/tests/unit/java/android/net/IpSecTransformTest.java
index ec59064..8bc1bbd 100644
--- a/tests/unit/java/android/net/IpSecTransformTest.java
+++ b/tests/unit/java/android/net/IpSecTransformTest.java
@@ -143,8 +143,9 @@
 
     @Test
     @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
-    public void testStartMigration() throws Exception {
-        mIpSecManager.startMigration(buildTestTransform(), SRC_ADDRESS_V6, DST_ADDRESS_V6);
+    public void testStartTransformMigration() throws Exception {
+        mIpSecManager.startTunnelModeTransformMigration(
+                buildTestTransform(), SRC_ADDRESS_V6, DST_ADDRESS_V6);
         verify(mMockIpSecService)
                 .migrateTransform(
                         anyInt(),
@@ -155,9 +156,10 @@
 
     @Test
     @DevSdkIgnoreRule.IgnoreAfter(Build.VERSION_CODES.TIRAMISU)
-    public void testStartMigrationOnSdkBeforeU() throws Exception {
+    public void testStartTransformMigrationOnSdkBeforeU() throws Exception {
         try {
-            mIpSecManager.startMigration(buildTestTransform(), SRC_ADDRESS_V6, DST_ADDRESS_V6);
+            mIpSecManager.startTunnelModeTransformMigration(
+                    buildTestTransform(), SRC_ADDRESS_V6, DST_ADDRESS_V6);
             fail("Expect to fail since migration is not supported before U");
         } catch (UnsupportedOperationException expected) {
         }
diff --git a/tests/unit/java/android/net/NetworkTemplateTest.kt b/tests/unit/java/android/net/NetworkTemplateTest.kt
index c3440c5..78854fb 100644
--- a/tests/unit/java/android/net/NetworkTemplateTest.kt
+++ b/tests/unit/java/android/net/NetworkTemplateTest.kt
@@ -34,10 +34,8 @@
 import android.net.NetworkStats.ROAMING_ALL
 import android.net.NetworkTemplate.MATCH_CARRIER
 import android.net.NetworkTemplate.MATCH_MOBILE
-import android.net.NetworkTemplate.MATCH_MOBILE_WILDCARD
 import android.net.NetworkTemplate.MATCH_TEST
 import android.net.NetworkTemplate.MATCH_WIFI
-import android.net.NetworkTemplate.MATCH_WIFI_WILDCARD
 import android.net.NetworkTemplate.NETWORK_TYPE_ALL
 import android.net.NetworkTemplate.OEM_MANAGED_ALL
 import android.net.NetworkTemplate.OEM_MANAGED_NO
@@ -231,7 +229,6 @@
         val templateMobileWildcard = buildTemplateMobileWildcard()
         val templateMobileNullImsiWithRatType = NetworkTemplate.Builder(MATCH_MOBILE)
                 .setRatType(TelephonyManager.NETWORK_TYPE_UMTS).build()
-
         val mobileImsi1 = buildMobileNetworkState(TEST_IMSI1)
         val identMobile1 = buildNetworkIdentity(mockContext, mobileImsi1,
                 false /* defaultNetwork */, TelephonyManager.NETWORK_TYPE_UMTS)
@@ -447,18 +444,18 @@
 
     @Test
     fun testParcelUnparcel() {
-        val templateMobile = NetworkTemplate(MATCH_MOBILE, TEST_IMSI1, arrayOf(TEST_IMSI1),
+        val templateMobile = NetworkTemplate(MATCH_MOBILE, arrayOf(TEST_IMSI1),
                 emptyArray<String>(), METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL,
                 TelephonyManager.NETWORK_TYPE_LTE, OEM_MANAGED_ALL)
-        val templateWifi = NetworkTemplate(MATCH_WIFI, null, emptyArray<String>(),
+        val templateWifi = NetworkTemplate(MATCH_WIFI, emptyArray<String>(),
                 arrayOf(TEST_WIFI_KEY1), METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, 0,
                 OEM_MANAGED_ALL)
-        val templateOem = NetworkTemplate(MATCH_MOBILE_WILDCARD, null, emptyArray<String>(),
+        val templateOem = NetworkTemplate(MATCH_MOBILE, emptyArray<String>(),
                 emptyArray<String>(), METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, 0,
                 OEM_MANAGED_YES)
-        assertParcelSane(templateMobile, 9)
-        assertParcelSane(templateWifi, 9)
-        assertParcelSane(templateOem, 9)
+        assertParcelSane(templateMobile, 8)
+        assertParcelSane(templateWifi, 8)
+        assertParcelSane(templateOem, 8)
     }
 
     // Verify NETWORK_TYPE_* constants in NetworkTemplate do not conflict with
@@ -491,13 +488,14 @@
      * @param matchType A match rule from {@code NetworkTemplate.MATCH_*} corresponding to the
      *         networkType.
      * @param subscriberId To be populated with {@code TEST_IMSI*} only if networkType is
-     *         {@code TYPE_MOBILE}. May be left as null when matchType is
-     *         {@link NetworkTemplate.MATCH_MOBILE_WILDCARD}.
-     * @param templateWifiKey Top be populated with {@code TEST_WIFI_KEY*} only if networkType is
-     *         {@code TYPE_WIFI}. May be left as null when matchType is
-     *         {@link NetworkTemplate.MATCH_WIFI_WILDCARD}.
-     * @param identWifiKey If networkType is {@code TYPE_WIFI}, this value must *NOT* be null. Provide
-     *         one of {@code TEST_WIFI_KEY*}.
+     *         {@code TYPE_MOBILE}. Note that {@code MATCH_MOBILE} with an empty subscriberId list
+     *         will match any subscriber ID.
+     * @param templateWifiKey To be populated with {@code TEST_WIFI_KEY*} only if networkType is
+     *         {@code TYPE_WIFI}. Note that {@code MATCH_WIFI} with both an empty subscriberId list
+     *         and an empty wifiNetworkKey list will match any subscriber ID and/or any wifi network
+     *         key.
+     * @param identWifiKey If networkType is {@code TYPE_WIFI}, this value must *NOT* be null.
+     *         Provide one of {@code TEST_WIFI_KEY*}.
      */
     private fun matchOemManagedIdent(
         networkType: Int,
@@ -507,13 +505,15 @@
         identWifiKey: String? = null
     ) {
         val oemManagedStates = arrayOf(OEM_NONE, OEM_PAID, OEM_PRIVATE, OEM_PAID or OEM_PRIVATE)
-        val matchSubscriberIds = arrayOf(subscriberId)
-        val matchWifiNetworkKeys = arrayOf(templateWifiKey)
+        val matchSubscriberIds =
+                if (subscriberId == null) emptyArray<String>() else arrayOf(subscriberId)
+        val matchWifiNetworkKeys =
+                if (templateWifiKey == null) emptyArray<String>() else arrayOf(templateWifiKey)
 
-        val templateOemYes = NetworkTemplate(matchType, subscriberId, matchSubscriberIds,
+        val templateOemYes = NetworkTemplate(matchType, matchSubscriberIds,
                 matchWifiNetworkKeys, METERED_ALL, ROAMING_ALL,
                 DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, OEM_MANAGED_YES)
-        val templateOemAll = NetworkTemplate(matchType, subscriberId, matchSubscriberIds,
+        val templateOemAll = NetworkTemplate(matchType, matchSubscriberIds,
                 matchWifiNetworkKeys, METERED_ALL, ROAMING_ALL,
                 DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, OEM_MANAGED_ALL)
 
@@ -524,7 +524,7 @@
 
             // Create a template with each OEM managed type and match it against the NetworkIdentity
             for (templateOemManagedState in oemManagedStates) {
-                val template = NetworkTemplate(matchType, subscriberId, matchSubscriberIds,
+                val template = NetworkTemplate(matchType, matchSubscriberIds,
                         matchWifiNetworkKeys, METERED_ALL, ROAMING_ALL,
                         DEFAULT_NETWORK_ALL, NETWORK_TYPE_ALL, templateOemManagedState)
                 if (identityOemManagedState == templateOemManagedState) {
@@ -547,11 +547,10 @@
     @Test
     fun testOemManagedMatchesIdent() {
         matchOemManagedIdent(TYPE_MOBILE, MATCH_MOBILE, subscriberId = TEST_IMSI1)
-        matchOemManagedIdent(TYPE_MOBILE, MATCH_MOBILE_WILDCARD)
+        matchOemManagedIdent(TYPE_MOBILE, MATCH_MOBILE)
         matchOemManagedIdent(TYPE_WIFI, MATCH_WIFI, templateWifiKey = TEST_WIFI_KEY1,
                 identWifiKey = TEST_WIFI_KEY1)
-        matchOemManagedIdent(TYPE_WIFI, MATCH_WIFI_WILDCARD,
-                identWifiKey = TEST_WIFI_KEY1)
+        matchOemManagedIdent(TYPE_WIFI, MATCH_WIFI, identWifiKey = TEST_WIFI_KEY1)
     }
 
     @Test
diff --git a/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
index 64355ed..9ce0693 100644
--- a/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
+++ b/tests/unit/java/android/net/nsd/NsdServiceInfoTest.java
@@ -21,6 +21,7 @@
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import android.net.InetAddresses;
 import android.net.Network;
 import android.os.Build;
 import android.os.Bundle;
@@ -38,6 +39,7 @@
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 
 @RunWith(DevSdkIgnoreRunner.class)
@@ -45,6 +47,8 @@
 @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
 public class NsdServiceInfoTest {
 
+    private static final InetAddress IPV4_ADDRESS = InetAddresses.parseNumericAddress("192.0.2.1");
+    private static final InetAddress IPV6_ADDRESS = InetAddresses.parseNumericAddress("2001:db8::");
     public final static InetAddress LOCALHOST;
     static {
         // Because test.
@@ -124,6 +128,7 @@
         fullInfo.setServiceType("_kitten._tcp");
         fullInfo.setPort(4242);
         fullInfo.setHost(LOCALHOST);
+        fullInfo.setHostAddresses(List.of(IPV4_ADDRESS));
         fullInfo.setNetwork(new Network(123));
         fullInfo.setInterfaceIndex(456);
         checkParcelable(fullInfo);
@@ -139,6 +144,7 @@
         attributedInfo.setServiceType("_kitten._tcp");
         attributedInfo.setPort(4242);
         attributedInfo.setHost(LOCALHOST);
+        fullInfo.setHostAddresses(List.of(IPV6_ADDRESS, IPV4_ADDRESS));
         attributedInfo.setAttribute("color", "pink");
         attributedInfo.setAttribute("sound", (new String("にゃあ")).getBytes("UTF-8"));
         attributedInfo.setAttribute("adorable", (String) null);
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index edc1775..c9783ba 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -64,6 +64,7 @@
 import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
 import static android.net.ConnectivityManager.PROFILE_NETWORK_PREFERENCE_DEFAULT;
 import static android.net.ConnectivityManager.PROFILE_NETWORK_PREFERENCE_ENTERPRISE;
+import static android.net.ConnectivityManager.PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING;
 import static android.net.ConnectivityManager.PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK;
 import static android.net.ConnectivityManager.TYPE_ETHERNET;
 import static android.net.ConnectivityManager.TYPE_MOBILE;
@@ -150,6 +151,7 @@
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_OEM;
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_PROFILE;
 import static com.android.server.ConnectivityService.PREFERENCE_ORDER_VPN;
+import static com.android.server.ConnectivityService.createDeliveryGroupKeyForConnectivityAction;
 import static com.android.server.ConnectivityServiceTestUtils.transportToLegacyType;
 import static com.android.server.NetworkAgentWrapper.CallbackType.OnQosCallbackRegister;
 import static com.android.server.NetworkAgentWrapper.CallbackType.OnQosCallbackUnregister;
@@ -167,6 +169,15 @@
 import static com.android.testutils.MiscAsserts.assertRunsInAtMost;
 import static com.android.testutils.MiscAsserts.assertSameElements;
 import static com.android.testutils.MiscAsserts.assertThrows;
+import static com.android.testutils.RecorderCallback.CallbackEntry.AVAILABLE;
+import static com.android.testutils.RecorderCallback.CallbackEntry.BLOCKED_STATUS;
+import static com.android.testutils.RecorderCallback.CallbackEntry.LINK_PROPERTIES_CHANGED;
+import static com.android.testutils.RecorderCallback.CallbackEntry.LOSING;
+import static com.android.testutils.RecorderCallback.CallbackEntry.LOST;
+import static com.android.testutils.RecorderCallback.CallbackEntry.NETWORK_CAPS_UPDATED;
+import static com.android.testutils.RecorderCallback.CallbackEntry.RESUMED;
+import static com.android.testutils.RecorderCallback.CallbackEntry.SUSPENDED;
+import static com.android.testutils.RecorderCallback.CallbackEntry.UNAVAILABLE;
 import static com.android.testutils.TestPermissionUtil.runAsShell;
 
 import static org.junit.Assert.assertEquals;
@@ -209,6 +220,7 @@
 import android.annotation.Nullable;
 import android.app.AlarmManager;
 import android.app.AppOpsManager;
+import android.app.BroadcastOptions;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.admin.DevicePolicyManager;
@@ -359,6 +371,8 @@
 import com.android.net.module.util.NetworkMonitorUtils;
 import com.android.networkstack.apishim.ConstantsShim;
 import com.android.networkstack.apishim.NetworkAgentConfigShimImpl;
+import com.android.networkstack.apishim.common.BroadcastOptionsShim;
+import com.android.networkstack.apishim.common.UnsupportedApiLevelException;
 import com.android.server.ConnectivityService.ConnectivityDiagnosticsCallbackInfo;
 import com.android.server.ConnectivityService.NetworkRequestInfo;
 import com.android.server.ConnectivityServiceTest.ConnectivityServiceDependencies.ReportedInterfaces;
@@ -525,9 +539,9 @@
     private ConnectivityServiceDependencies mDeps;
     private ConnectivityService mService;
     private WrappedConnectivityManager mCm;
-    private TestNetworkAgentWrapper mWiFiNetworkAgent;
-    private TestNetworkAgentWrapper mCellNetworkAgent;
-    private TestNetworkAgentWrapper mEthernetNetworkAgent;
+    private TestNetworkAgentWrapper mWiFiAgent;
+    private TestNetworkAgentWrapper mCellAgent;
+    private TestNetworkAgentWrapper mEthernetAgent;
     private MockVpn mMockVpn;
     private Context mContext;
     private NetworkPolicyCallback mPolicyCallback;
@@ -573,6 +587,7 @@
     @Mock BpfNetMaps mBpfNetMaps;
     @Mock CarrierPrivilegeAuthenticator mCarrierPrivilegeAuthenticator;
     @Mock TetheringManager mTetheringManager;
+    @Mock BroadcastOptionsShim mBroadcastOptionsShim;
 
     // BatteryStatsManager is final and cannot be mocked with regular mockito, so just mock the
     // underlying binder calls.
@@ -820,6 +835,25 @@
             // null should not pass the test
             return null;
         }
+
+        @Override
+        public void sendStickyBroadcast(Intent intent, Bundle options) {
+            // Verify that delivery group policy APIs were used on U.
+            if (SdkLevel.isAtLeastU() && CONNECTIVITY_ACTION.equals(intent.getAction())) {
+                final NetworkInfo ni = intent.getParcelableExtra(EXTRA_NETWORK_INFO,
+                        NetworkInfo.class);
+                try {
+                    verify(mBroadcastOptionsShim).setDeliveryGroupPolicy(
+                            eq(ConstantsShim.DELIVERY_GROUP_POLICY_MOST_RECENT));
+                    verify(mBroadcastOptionsShim).setDeliveryGroupMatchingKey(
+                            eq(CONNECTIVITY_ACTION),
+                            eq(createDeliveryGroupKeyForConnectivityAction(ni)));
+                } catch (UnsupportedApiLevelException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+            super.sendStickyBroadcast(intent, options);
+        }
     }
 
     // This was only added in the T SDK, but this test needs to build against the R+S SDKs, too.
@@ -850,9 +884,9 @@
 
     private void waitForIdle() {
         HandlerUtils.waitForIdle(mCsHandlerThread, TIMEOUT_MS);
-        waitForIdle(mCellNetworkAgent, TIMEOUT_MS);
-        waitForIdle(mWiFiNetworkAgent, TIMEOUT_MS);
-        waitForIdle(mEthernetNetworkAgent, TIMEOUT_MS);
+        waitForIdle(mCellAgent, TIMEOUT_MS);
+        waitForIdle(mWiFiAgent, TIMEOUT_MS);
+        waitForIdle(mEthernetAgent, TIMEOUT_MS);
         HandlerUtils.waitForIdle(mCsHandlerThread, TIMEOUT_MS);
         HandlerUtils.waitForIdle(ConnectivityThread.get(), TIMEOUT_MS);
     }
@@ -875,15 +909,15 @@
 
         // Bring up a network that we can use to send messages to ConnectivityService.
         ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
-        Network n = mWiFiNetworkAgent.getNetwork();
+        Network n = mWiFiAgent.getNetwork();
         assertNotNull(n);
 
         // Tests that calling waitForIdle waits for messages to be processed.
         for (int i = 0; i < attempts; i++) {
-            mWiFiNetworkAgent.setSignalStrength(i);
+            mWiFiAgent.setSignalStrength(i);
             waitForIdle();
             assertEquals(i, mCm.getNetworkCapabilities(n).getSignalStrength());
         }
@@ -895,16 +929,16 @@
     public void verifyThatNotWaitingForIdleCausesRaceConditions() throws Exception {
         // Bring up a network that we can use to send messages to ConnectivityService.
         ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
-        Network n = mWiFiNetworkAgent.getNetwork();
+        Network n = mWiFiAgent.getNetwork();
         assertNotNull(n);
 
         // Ensure that not calling waitForIdle causes a race condition.
         final int attempts = 50;  // Causes the test to take about 200ms on bullhead-eng.
         for (int i = 0; i < attempts; i++) {
-            mWiFiNetworkAgent.setSignalStrength(i);
+            mWiFiAgent.setSignalStrength(i);
             if (i != mCm.getNetworkCapabilities(n).getSignalStrength()) {
                 // We hit a race condition, as expected. Pass the test.
                 return;
@@ -2052,6 +2086,12 @@
             assertNotEquals(-1L, (long) mActiveRateLimit.getOrDefault(iface, -1L));
             mActiveRateLimit.put(iface, -1L);
         }
+
+        @Override
+        public BroadcastOptionsShim makeBroadcastOptionsShim(BroadcastOptions options) {
+            reset(mBroadcastOptionsShim);
+            return mBroadcastOptionsShim;
+        }
     }
 
     private static void initAlarmManager(final AlarmManager am, final Handler alarmHandler) {
@@ -2085,17 +2125,17 @@
         unregisterDefaultNetworkCallbacks();
         maybeTearDownEnterpriseNetwork();
         setAlwaysOnNetworks(false);
-        if (mCellNetworkAgent != null) {
-            mCellNetworkAgent.disconnect();
-            mCellNetworkAgent = null;
+        if (mCellAgent != null) {
+            mCellAgent.disconnect();
+            mCellAgent = null;
         }
-        if (mWiFiNetworkAgent != null) {
-            mWiFiNetworkAgent.disconnect();
-            mWiFiNetworkAgent = null;
+        if (mWiFiAgent != null) {
+            mWiFiAgent.disconnect();
+            mWiFiAgent = null;
         }
-        if (mEthernetNetworkAgent != null) {
-            mEthernetNetworkAgent.disconnect();
-            mEthernetNetworkAgent = null;
+        if (mEthernetAgent != null) {
+            mEthernetAgent.disconnect();
+            mEthernetAgent = null;
         }
 
         if (mQosCallbackMockHelper != null) {
@@ -2158,13 +2198,13 @@
         }
         switch (transport) {
             case TRANSPORT_WIFI:
-                assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+                assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
                 break;
             case TRANSPORT_CELLULAR:
-                assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+                assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
                 break;
             case TRANSPORT_ETHERNET:
-                assertEquals(mEthernetNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+                assertEquals(mEthernetAgent.getNetwork(), mCm.getActiveNetwork());
                 break;
             default:
                 break;
@@ -2338,10 +2378,10 @@
     @Test
     public void testNetworkFeature() throws Exception {
         // Connect the cell agent and wait for the connected broadcast.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_SUPL);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.addCapability(NET_CAPABILITY_SUPL);
         ExpectedBroadcast b = expectConnectivityAction(TYPE_MOBILE, DetailedState.CONNECTED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
 
         // Build legacy request for SUPL.
@@ -2355,45 +2395,45 @@
         b = registerConnectivityBroadcast(1);
         final TestNetworkCallback callback = new TestNetworkCallback();
         mCm.requestNetwork(legacyRequest, callback);
-        callback.expect(CallbackEntry.AVAILABLE, mCellNetworkAgent);
+        callback.expect(AVAILABLE, mCellAgent);
         mCm.unregisterNetworkCallback(callback);
         b.expectNoBroadcast(800);  // 800ms long enough to at least flake if this is sent
 
         // Disconnect the network and expect mobile disconnected broadcast.
         b = expectConnectivityAction(TYPE_MOBILE, DetailedState.DISCONNECTED);
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         b.expectBroadcast();
     }
 
     @Test
     public void testLingering() throws Exception {
         verifyNoNetwork();
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         assertNull(mCm.getActiveNetworkInfo());
         assertNull(mCm.getActiveNetwork());
         // Test bringing up validated cellular.
         ExpectedBroadcast b = expectConnectivityAction(TYPE_MOBILE, DetailedState.CONNECTED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         assertLength(2, mCm.getAllNetworks());
-        assertTrue(mCm.getAllNetworks()[0].equals(mCm.getActiveNetwork()) ||
-                mCm.getAllNetworks()[1].equals(mCm.getActiveNetwork()));
-        assertTrue(mCm.getAllNetworks()[0].equals(mWiFiNetworkAgent.getNetwork()) ||
-                mCm.getAllNetworks()[1].equals(mWiFiNetworkAgent.getNetwork()));
+        assertTrue(mCm.getAllNetworks()[0].equals(mCm.getActiveNetwork())
+                || mCm.getAllNetworks()[1].equals(mCm.getActiveNetwork()));
+        assertTrue(mCm.getAllNetworks()[0].equals(mWiFiAgent.getNetwork())
+                || mCm.getAllNetworks()[1].equals(mWiFiAgent.getNetwork()));
         // Test bringing up validated WiFi.
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         assertLength(2, mCm.getAllNetworks());
-        assertTrue(mCm.getAllNetworks()[0].equals(mCm.getActiveNetwork()) ||
-                mCm.getAllNetworks()[1].equals(mCm.getActiveNetwork()));
-        assertTrue(mCm.getAllNetworks()[0].equals(mCellNetworkAgent.getNetwork()) ||
-                mCm.getAllNetworks()[1].equals(mCellNetworkAgent.getNetwork()));
+        assertTrue(mCm.getAllNetworks()[0].equals(mCm.getActiveNetwork())
+                || mCm.getAllNetworks()[1].equals(mCm.getActiveNetwork()));
+        assertTrue(mCm.getAllNetworks()[0].equals(mCellAgent.getNetwork())
+                || mCm.getAllNetworks()[1].equals(mCellAgent.getNetwork()));
         // Test cellular linger timeout.
-        mCellNetworkAgent.expectDisconnected();
+        mCellAgent.expectDisconnected();
         waitForIdle();
         assertLength(1, mCm.getAllNetworks());
         verifyActiveNetwork(TRANSPORT_WIFI);
@@ -2401,7 +2441,7 @@
         assertEquals(mCm.getAllNetworks()[0], mCm.getActiveNetwork());
         // Test WiFi disconnect.
         b = registerConnectivityBroadcast(1);
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         b.expectBroadcast();
         verifyNoNetwork();
     }
@@ -2418,43 +2458,43 @@
 
         // 1. Create a network that is not requested by anyone, and does not satisfy any of the
         // default requests. Verify that the network will be inactive instead of torn down.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithoutInternet();
-        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithoutInternet();
+        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         listenCallback.assertNoCallback();
 
         // Verify that the network will be torn down after nascent expiry. A small period of time
         // is added in case of flakiness.
         final int nascentTimeoutMs =
                 mService.mNascentDelayMs + mService.mNascentDelayMs / 4;
-        listenCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent, nascentTimeoutMs);
+        listenCallback.expect(LOST, mWiFiAgent, nascentTimeoutMs);
 
         // 2. Create a network that is satisfied by a request comes later.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithoutInternet();
-        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithoutInternet();
+        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         final NetworkRequest wifiRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_WIFI).build();
         final TestNetworkCallback wifiCallback = new TestNetworkCallback();
         mCm.requestNetwork(wifiRequest, wifiCallback);
-        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Verify that the network will be kept since the request is still satisfied. And is able
         // to get disconnected as usual if the request is released after the nascent timer expires.
         listenCallback.assertNoCallback(nascentTimeoutMs);
         mCm.unregisterNetworkCallback(wifiCallback);
-        listenCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        listenCallback.expect(LOST, mWiFiAgent);
 
         // 3. Create a network that is satisfied by a request comes later.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithoutInternet();
-        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithoutInternet();
+        listenCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         mCm.requestNetwork(wifiRequest, wifiCallback);
-        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Verify that the network will still be torn down after the request gets removed.
         mCm.unregisterNetworkCallback(wifiCallback);
-        listenCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        listenCallback.expect(LOST, mWiFiAgent);
 
         // There is no need to ensure that LOSING is never sent in the common case that the
         // network immediately satisfies a request that was already present, because it is already
@@ -2487,20 +2527,20 @@
                 .addCapability(NET_CAPABILITY_FOREGROUND).build(), fgMobileListenCallback);
 
         // Connect wifi, which satisfies default request.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        wifiListenCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        wifiListenCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
 
         // Connect a cellular network, verify that satisfies only the background callback.
         setAlwaysOnNetworks(true);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        bgMobileListenCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        bgMobileListenCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         fgMobileListenCallback.assertNoCallback();
-        assertFalse(isForegroundNetwork(mCellNetworkAgent));
+        assertFalse(isForegroundNetwork(mCellAgent));
 
-        mCellNetworkAgent.disconnect();
-        bgMobileListenCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        bgMobileListenCallback.expect(LOST, mCellAgent);
         fgMobileListenCallback.assertNoCallback();
 
         mCm.unregisterNetworkCallback(wifiListenCallback);
@@ -2565,34 +2605,34 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up unvalidated WiFi
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test bringing up unvalidated cellular
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false);
         waitForIdle();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test cellular disconnect.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         waitForIdle();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test bringing up validated cellular
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         b = registerConnectivityBroadcast(2);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test cellular disconnect.
         b = registerConnectivityBroadcast(2);
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test WiFi disconnect.
         b = registerConnectivityBroadcast(1);
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         b.expectBroadcast();
         verifyNoNetwork();
     }
@@ -2613,25 +2653,25 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up unvalidated cellular.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent.connect(false);
+        mCellAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test bringing up unvalidated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test WiFi disconnect.
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test cellular disconnect.
         b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         b.expectBroadcast();
         verifyNoNetwork();
     }
@@ -2652,28 +2692,28 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up unvalidated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
-        assertFalse(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         // Test bringing up validated cellular.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         b = registerConnectivityBroadcast(2);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
-        assertFalse(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         // Test cellular disconnect.
         b = registerConnectivityBroadcast(2);
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Unlingering a network should not cause it to be marked as validated.
-        assertFalse(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
     }
 
@@ -2745,7 +2785,7 @@
             net1.expectDisconnected(TEST_CALLBACK_TIMEOUT_MS);
         }
         net1.disconnect();
-        generalCb.expect(CallbackEntry.LOST, net1);
+        generalCb.expect(LOST, net1);
 
         // Remove primary from net 2
         net2.setScore(new NetworkScore.Builder().build());
@@ -2775,13 +2815,14 @@
             // for any other request.
             generalCb.expectLosing(net2);
             net2.assertNotDisconnected(TEST_CALLBACK_TIMEOUT_MS);
-            generalCb.assertNoCallback();
+            // Timeout 0 because after a while LOST will actually arrive
+            generalCb.assertNoCallback(0 /* timeoutMs */);
             net2.expectDisconnected(UNREASONABLY_LONG_ALARM_WAIT_MS);
         } else {
             net2.expectDisconnected(TEST_CALLBACK_TIMEOUT_MS);
         }
         net2.disconnect();
-        generalCb.expect(CallbackEntry.LOST, net2);
+        generalCb.expect(LOST, net2);
         defaultCb.assertNoCallback();
 
         net3.disconnect();
@@ -2806,25 +2847,25 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up validated cellular.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test bringing up validated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test WiFi getting really weak.
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.adjustScore(-11);
+        mWiFiAgent.adjustScore(-11);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test WiFi restoring signal strength.
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.adjustScore(11);
+        mWiFiAgent.adjustScore(11);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
     }
@@ -2846,29 +2887,29 @@
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up WiFi without NET_CAPABILITY_INTERNET.
         // Expect it to be torn down immediately because it satisfies no requests.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithoutInternet();
-        mWiFiNetworkAgent.expectDisconnected();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithoutInternet();
+        mWiFiAgent.expectDisconnected();
         // Test bringing up cellular without NET_CAPABILITY_INTERNET.
         // Expect it to be torn down immediately because it satisfies no requests.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mCellNetworkAgent.connectWithoutInternet();
-        mCellNetworkAgent.expectDisconnected();
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent.connectWithoutInternet();
+        mCellAgent.expectDisconnected();
         // Test bringing up validated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         final ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test bringing up unvalidated cellular.
         // Expect it to be torn down because it could never be the highest scoring network
         // satisfying the default request even if it validated.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false);
-        mCellNetworkAgent.expectDisconnected();
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false);
+        mCellAgent.expectDisconnected();
         verifyActiveNetwork(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent.expectDisconnected();
+        mWiFiAgent.disconnect();
+        mWiFiAgent.expectDisconnected();
     }
 
     // TODO : migrate to @Parameterized
@@ -2887,37 +2928,37 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up validated cellular.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Test bringing up validated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Reevaluate WiFi (it'll instantly fail DNS).
         b = registerConnectivityBroadcast(2);
-        assertTrue(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertTrue(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
-        mCm.reportBadNetwork(mWiFiNetworkAgent.getNetwork());
+        mCm.reportBadNetwork(mWiFiAgent.getNetwork());
         // Should quickly fall back to Cellular.
         b.expectBroadcast();
-        assertFalse(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Reevaluate cellular (it'll instantly fail DNS).
         b = registerConnectivityBroadcast(2);
-        assertTrue(mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork()).hasCapability(
+        assertTrue(mCm.getNetworkCapabilities(mCellAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
-        mCm.reportBadNetwork(mCellNetworkAgent.getNetwork());
+        mCm.reportBadNetwork(mCellAgent.getNetwork());
         // Should quickly fall back to WiFi.
         b.expectBroadcast();
-        assertFalse(mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mCellAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
-        assertFalse(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         verifyActiveNetwork(TRANSPORT_WIFI);
     }
@@ -2938,25 +2979,25 @@
             final boolean cellRadioTimesharingCapable) throws Exception {
         mService.mCellularRadioTimesharingCapable = cellRadioTimesharingCapable;
         // Test bringing up unvalidated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
         // Test bringing up validated cellular.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         b = registerConnectivityBroadcast(2);
-        mCellNetworkAgent.connect(true);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
         // Reevaluate cellular (it'll instantly fail DNS).
         b = registerConnectivityBroadcast(2);
-        assertTrue(mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork()).hasCapability(
+        assertTrue(mCm.getNetworkCapabilities(mCellAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
-        mCm.reportBadNetwork(mCellNetworkAgent.getNetwork());
+        mCm.reportBadNetwork(mCellAgent.getNetwork());
         // Should quickly fall back to WiFi.
         b.expectBroadcast();
-        assertFalse(mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork()).hasCapability(
+        assertFalse(mCm.getNetworkCapabilities(mCellAgent.getNetwork()).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         verifyActiveNetwork(TRANSPORT_WIFI);
     }
@@ -2975,18 +3016,16 @@
      */
     private class TestNetworkCallback extends TestableNetworkCallback {
         TestNetworkCallback() {
-            super(TEST_CALLBACK_TIMEOUT_MS);
-        }
-
-        @Override
-        public void assertNoCallback() {
-            // TODO: better support this use case in TestableNetworkCallback
-            waitForIdle();
-            assertNoCallback(0 /* timeout */);
+            // In the context of this test, the testable network callbacks should use waitForIdle
+            // before calling assertNoCallback in an effort to detect issues where a callback is
+            // not yet sent but a message currently in the queue of a handler will cause it to
+            // be sent soon.
+            super(TEST_CALLBACK_TIMEOUT_MS, TEST_CALLBACK_TIMEOUT_MS,
+                    ConnectivityServiceTest.this::waitForIdle);
         }
 
         public CallbackEntry.Losing expectLosing(final HasNetwork n, final long timeoutMs) {
-            final CallbackEntry.Losing losing = expect(CallbackEntry.LOSING, n, timeoutMs);
+            final CallbackEntry.Losing losing = expect(LOSING, n, timeoutMs);
             final int maxMsToLive = losing.getMaxMsToLive();
             if (maxMsToLive < 0 || maxMsToLive > mService.mLingerDelayMs) {
                 // maxMsToLive is the value that was received in the onLosing callback. That must
@@ -3008,27 +3047,33 @@
 
     // Can't be part of TestNetworkCallback because "cannot be declared static; static methods can
     // only be declared in a static or top level type".
+    static void assertNoCallbacks(final long timeoutMs, TestNetworkCallback ... callbacks) {
+        for (TestNetworkCallback c : callbacks) {
+            c.assertNoCallback(timeoutMs);
+        }
+    }
+
     static void assertNoCallbacks(TestNetworkCallback ... callbacks) {
         for (TestNetworkCallback c : callbacks) {
-            c.assertNoCallback();
+            c.assertNoCallback(); // each callback uses its own timeout
         }
     }
 
     static void expectOnLost(TestNetworkAgentWrapper network, TestNetworkCallback ... callbacks) {
         for (TestNetworkCallback c : callbacks) {
-            c.expect(CallbackEntry.LOST, network);
+            c.expect(LOST, network);
         }
     }
 
     static void expectAvailableCallbacksUnvalidatedWithSpecifier(TestNetworkAgentWrapper network,
             NetworkSpecifier specifier, TestNetworkCallback ... callbacks) {
         for (TestNetworkCallback c : callbacks) {
-            c.expect(CallbackEntry.AVAILABLE, network);
+            c.expect(AVAILABLE, network);
             c.expectCapabilitiesThat(network, (nc) ->
                     !nc.hasCapability(NET_CAPABILITY_VALIDATED)
                             && Objects.equals(specifier, nc.getNetworkSpecifier()));
-            c.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, network);
-            c.expect(CallbackEntry.BLOCKED_STATUS, network);
+            c.expect(LINK_PROPERTIES_CHANGED, network);
+            c.expect(BLOCKED_STATUS, network);
         }
     }
 
@@ -3038,12 +3083,12 @@
         final NetworkRequest wifiRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_WIFI).build();
         mCm.requestNetwork(wifiRequest, cb);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         // Updating the score triggers a rematch.
-        mWiFiNetworkAgent.setScore(new NetworkScore.Builder().build());
+        mWiFiAgent.setScore(new NetworkScore.Builder().build());
         cb.assertNoCallback();
-        mWiFiNetworkAgent.connect(false);
-        cb.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent.connect(false);
+        cb.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         cb.assertNoCallback();
         mCm.unregisterNetworkCallback(cb);
     }
@@ -3054,13 +3099,13 @@
         final NetworkRequest wifiRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_WIFI).build();
         mCm.registerNetworkCallback(wifiRequest, cb);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        final NetworkCapabilities nc = mWiFiNetworkAgent.getNetworkCapabilities();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        final NetworkCapabilities nc = mWiFiAgent.getNetworkCapabilities();
         nc.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
-        mWiFiNetworkAgent.setNetworkCapabilities(nc, true /* sendToConnectivityService */);
+        mWiFiAgent.setNetworkCapabilities(nc, true /* sendToConnectivityService */);
         cb.assertNoCallback();
-        mWiFiNetworkAgent.connect(false);
-        cb.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent.connect(false);
+        cb.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         final CallbackEntry found = CollectionUtils.findLast(cb.getHistory(),
                 it -> it instanceof CallbackEntry.CapabilitiesChanged);
         assertTrue(((CallbackEntry.CapabilitiesChanged) found).getCaps()
@@ -3086,76 +3131,79 @@
 
         // Test unvalidated networks
         ExpectedBroadcast b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false);
-        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        cellNetworkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false);
+        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        cellNetworkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         b.expectBroadcast();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
         // This should not trigger spurious onAvailable() callbacks, b/21762680.
-        mCellNetworkAgent.adjustScore(-1);
+        mCellAgent.adjustScore(-1);
         waitForIdle();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
 
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         b.expectBroadcast();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
         b = registerConnectivityBroadcast(2);
-        mWiFiNetworkAgent.disconnect();
-        genericNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        wifiNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        genericNetworkCallback.expect(LOST, mWiFiAgent);
+        wifiNetworkCallback.expect(LOST, mWiFiAgent);
         cellNetworkCallback.assertNoCallback();
         b.expectBroadcast();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
         b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent.disconnect();
-        genericNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        genericNetworkCallback.expect(LOST, mCellAgent);
+        cellNetworkCallback.expect(LOST, mCellAgent);
         b.expectBroadcast();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
         // Test validated networks
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        genericNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        genericNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
         // This should not trigger spurious onAvailable() callbacks, b/21762680.
-        mCellNetworkAgent.adjustScore(-1);
+        mCellAgent.adjustScore(-1);
         waitForIdle();
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        genericNetworkCallback.expectLosing(mCellNetworkAgent);
-        genericNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        wifiNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        cellNetworkCallback.expectLosing(mCellNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        genericNetworkCallback.expectLosing(mCellAgent);
+        genericNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        wifiNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        cellNetworkCallback.expectLosing(mCellAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        // Cell will disconnect after the lingering period. Before that elapses check that
+        // there have been no callbacks.
+        assertNoCallbacks(0 /* timeoutMs */,
+                genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
+
+        mWiFiAgent.disconnect();
+        genericNetworkCallback.expect(LOST, mWiFiAgent);
+        wifiNetworkCallback.expect(LOST, mWiFiAgent);
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
 
-        mWiFiNetworkAgent.disconnect();
-        genericNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        wifiNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
-
-        mCellNetworkAgent.disconnect();
-        genericNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        genericNetworkCallback.expect(LOST, mCellAgent);
+        cellNetworkCallback.expect(LOST, mCellAgent);
         assertNoCallbacks(genericNetworkCallback, wifiNetworkCallback, cellNetworkCallback);
     }
 
@@ -3167,10 +3215,10 @@
         mCm.registerNetworkCallback(wifiRequest, callback);
         mCm.registerDefaultNetworkCallback(defaultCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         final LinkProperties newLp = new LinkProperties();
         final Uri capportUrl = Uri.parse("https://capport.example.com/api");
@@ -3179,20 +3227,20 @@
 
         final Uri expectedCapportUrl = sanitized ? null : capportUrl;
         newLp.setCaptivePortalApiUrl(capportUrl);
-        mWiFiNetworkAgent.sendLinkProperties(newLp);
-        callback.expectLinkPropertiesThat(mWiFiNetworkAgent, lp ->
+        mWiFiAgent.sendLinkProperties(newLp);
+        callback.expectLinkPropertiesThat(mWiFiAgent, lp ->
                 Objects.equals(expectedCapportUrl, lp.getCaptivePortalApiUrl()));
-        defaultCallback.expectLinkPropertiesThat(mWiFiNetworkAgent, lp ->
+        defaultCallback.expectLinkPropertiesThat(mWiFiAgent, lp ->
                 Objects.equals(expectedCapportUrl, lp.getCaptivePortalApiUrl()));
 
         final CaptivePortalData expectedCapportData = sanitized ? null : capportData;
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(capportData);
-        callback.expectLinkPropertiesThat(mWiFiNetworkAgent, lp ->
+        mWiFiAgent.notifyCapportApiDataChanged(capportData);
+        callback.expectLinkPropertiesThat(mWiFiAgent, lp ->
                 Objects.equals(expectedCapportData, lp.getCaptivePortalData()));
-        defaultCallback.expectLinkPropertiesThat(mWiFiNetworkAgent, lp ->
+        defaultCallback.expectLinkPropertiesThat(mWiFiAgent, lp ->
                 Objects.equals(expectedCapportData, lp.getCaptivePortalData()));
 
-        final LinkProperties lp = mCm.getLinkProperties(mWiFiNetworkAgent.getNetwork());
+        final LinkProperties lp = mCm.getLinkProperties(mWiFiAgent.getNetwork());
         assertEquals(expectedCapportUrl, lp.getCaptivePortalApiUrl());
         assertEquals(expectedCapportData, lp.getCaptivePortalData());
     }
@@ -3227,19 +3275,18 @@
         final int originalOwnerUid = Process.myUid();
         ncTemplate.setOwnerUid(originalOwnerUid);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(),
-                ncTemplate);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(), ncTemplate);
+        mWiFiAgent.connect(false);
         waitForIdle();
 
-        // Send ConnectivityService an update to the mWiFiNetworkAgent's capabilities that changes
+        // Send ConnectivityService an update to the mWiFiAgent's capabilities that changes
         // the owner UID and an unrelated capability.
-        NetworkCapabilities agentCapabilities = mWiFiNetworkAgent.getNetworkCapabilities();
+        NetworkCapabilities agentCapabilities = mWiFiAgent.getNetworkCapabilities();
         assertEquals(originalOwnerUid, agentCapabilities.getOwnerUid());
         agentCapabilities.setOwnerUid(42);
         assertFalse(agentCapabilities.hasCapability(NET_CAPABILITY_NOT_CONGESTED));
         agentCapabilities.addCapability(NET_CAPABILITY_NOT_CONGESTED);
-        mWiFiNetworkAgent.setNetworkCapabilities(agentCapabilities, true);
+        mWiFiAgent.setNetworkCapabilities(agentCapabilities, true);
         waitForIdle();
 
         // Owner UIDs are not visible without location permission.
@@ -3247,7 +3294,7 @@
                 Manifest.permission.ACCESS_FINE_LOCATION);
 
         // Check that the capability change has been applied but the owner UID is not modified.
-        NetworkCapabilities nc = mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork());
+        NetworkCapabilities nc = mCm.getNetworkCapabilities(mWiFiAgent.getNetwork());
         assertEquals(originalOwnerUid, nc.getOwnerUid());
         assertTrue(nc.hasCapability(NET_CAPABILITY_NOT_CONGESTED));
     }
@@ -3269,56 +3316,56 @@
         TestNetworkCallback defaultCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(defaultCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
 
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mEthernetNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mEthernetAgent.addCapability(NET_CAPABILITY_NOT_METERED);
 
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         // We get AVAILABLE on wifi when wifi connects and satisfies our unmetered request.
         // We then get LOSING when wifi validates and cell is outscored.
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         // TODO: Investigate sending validated before losing.
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
-        mEthernetNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mEthernetNetworkAgent);
+        mEthernetAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mEthernetAgent);
         // TODO: Investigate sending validated before losing.
-        callback.expectLosing(mWiFiNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetNetworkAgent);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetNetworkAgent);
-        assertEquals(mEthernetNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        callback.expectLosing(mWiFiAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetAgent);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetAgent);
+        assertEquals(mEthernetAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
-        mEthernetNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
-        defaultCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+        mEthernetAgent.disconnect();
+        callback.expect(LOST, mEthernetAgent);
+        defaultCallback.expect(LOST, mEthernetAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         for (int i = 0; i < 4; i++) {
             TestNetworkAgentWrapper oldNetwork, newNetwork;
             if (i % 2 == 0) {
-                mWiFiNetworkAgent.adjustScore(-15);
-                oldNetwork = mWiFiNetworkAgent;
-                newNetwork = mCellNetworkAgent;
+                mWiFiAgent.adjustScore(-15);
+                oldNetwork = mWiFiAgent;
+                newNetwork = mCellAgent;
             } else {
-                mWiFiNetworkAgent.adjustScore(15);
-                oldNetwork = mCellNetworkAgent;
-                newNetwork = mWiFiNetworkAgent;
+                mWiFiAgent.adjustScore(15);
+                oldNetwork = mCellAgent;
+                newNetwork = mWiFiAgent;
 
             }
             callback.expectLosing(oldNetwork);
@@ -3327,28 +3374,28 @@
             defaultCallback.expectAvailableCallbacksValidated(newNetwork);
             assertEquals(newNetwork.getNetwork(), mCm.getActiveNetwork());
         }
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Verify that if a network no longer satisfies a request, we send LOST and not LOSING, even
         // if the network is still up.
-        mWiFiNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
         // We expect a notification about the capabilities change, and nothing else.
-        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED, mWiFiNetworkAgent);
+        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED, mWiFiAgent);
         defaultCallback.assertNoCallback();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        callback.expect(LOST, mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Wifi no longer satisfies our listen, which is for an unmetered network.
         // But because its score is 55, it's still up (and the default network).
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Disconnect our test networks.
-        mWiFiNetworkAgent.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mWiFiAgent.disconnect();
+        defaultCallback.expect(LOST, mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
-        mCellNetworkAgent.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        defaultCallback.expect(LOST, mCellAgent);
         waitForIdle();
         assertEquals(null, mCm.getActiveNetwork());
 
@@ -3362,64 +3409,64 @@
 
         mCm.registerNetworkCallback(request, callback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false);   // Score: 10
-        callback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false);   // Score: 10
+        callback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Bring up wifi with a score of 20.
         // Cell stays up because it would satisfy the default request if it validated.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);   // Score: 20
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);   // Score: 20
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        defaultCallback.expect(LOST, mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Bring up wifi, then validate it. Previous versions would immediately tear down cell, but
         // it's arguably correct to linger it, since it was the default network before it validated.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         // TODO: Investigate sending validated before losing.
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        mCellNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        defaultCallback.expect(LOST, mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        mCellAgent.disconnect();
+        callback.expect(LOST, mCellAgent);
+        defaultCallback.expect(LOST, mCellAgent);
         waitForIdle();
         assertEquals(null, mCm.getActiveNetwork());
 
         // If a network is lingering, and we add and remove a request from it, resume lingering.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         // TODO: Investigate sending validated before losing.
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         NetworkRequest cellRequest = new NetworkRequest.Builder()
@@ -3429,14 +3476,14 @@
         // TODO: should this cause an AVAILABLE callback, to indicate that the network is no longer
         // lingering?
         mCm.unregisterNetworkCallback(noopCallback);
-        callback.expectLosing(mCellNetworkAgent);
+        callback.expectLosing(mCellAgent);
 
         // Similar to the above: lingering can start even after the lingered request is removed.
         // Disconnect wifi and switch to cell.
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        defaultCallback.expect(LOST, mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Cell is now the default network. Pin it with a cell-specific request.
@@ -3444,44 +3491,44 @@
         mCm.requestNetwork(cellRequest, noopCallback);
 
         // Now connect wifi, and expect it to become the default network.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
         // The default request is lingering on cell, but nothing happens to cell, and we send no
         // callbacks for it, because it's kept up by cellRequest.
         callback.assertNoCallback();
         // Now unregister cellRequest and expect cell to start lingering.
         mCm.unregisterNetworkCallback(noopCallback);
-        callback.expectLosing(mCellNetworkAgent);
+        callback.expectLosing(mCellAgent);
 
         // Let linger run its course.
-        callback.assertNoCallback();
+        callback.assertNoCallback(0 /* timeoutMs */);
         final int lingerTimeoutMs = mService.mLingerDelayMs + mService.mLingerDelayMs / 4;
-        callback.expect(CallbackEntry.LOST, mCellNetworkAgent, lingerTimeoutMs);
+        callback.expect(LOST, mCellAgent, lingerTimeoutMs);
 
         // Register a TRACK_DEFAULT request and check that it does not affect lingering.
         TestNetworkCallback trackDefaultCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(trackDefaultCallback);
-        trackDefaultCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mEthernetNetworkAgent);
-        callback.expectLosing(mWiFiNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetNetworkAgent);
-        trackDefaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetNetworkAgent);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetNetworkAgent);
+        trackDefaultCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mEthernetAgent);
+        callback.expectLosing(mWiFiAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetAgent);
+        trackDefaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetAgent);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mEthernetAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Let linger run its course.
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent, lingerTimeoutMs);
+        callback.expect(LOST, mWiFiAgent, lingerTimeoutMs);
 
         // Clean up.
-        mEthernetNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
-        trackDefaultCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
+        mEthernetAgent.disconnect();
+        callback.expect(LOST, mEthernetAgent);
+        defaultCallback.expect(LOST, mEthernetAgent);
+        trackDefaultCallback.expect(LOST, mEthernetAgent);
 
         mCm.unregisterNetworkCallback(callback);
         mCm.unregisterNetworkCallback(defaultCallback);
@@ -3517,19 +3564,19 @@
         TestNetworkCallback defaultCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(defaultCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
 
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         // Wifi comes up and cell lingers.
-        mWiFiNetworkAgent.connect(true);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.connect(true);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
 
         // File a request for cellular, then release it.
         NetworkRequest cellRequest = new NetworkRequest.Builder()
@@ -3537,13 +3584,12 @@
         NetworkCallback noopCallback = new NetworkCallback();
         mCm.requestNetwork(cellRequest, noopCallback);
         mCm.unregisterNetworkCallback(noopCallback);
-        callback.expectLosing(mCellNetworkAgent);
+        callback.expectLosing(mCellAgent);
 
         // Let linger run its course.
         callback.assertNoCallback();
         final int lingerTimeoutMs = TEST_LINGER_DELAY_MS + TEST_LINGER_DELAY_MS / 4;
-        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellNetworkAgent,
-                lingerTimeoutMs);
+        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellAgent, lingerTimeoutMs);
 
         // Clean up.
         mCm.unregisterNetworkCallback(defaultCallback);
@@ -3598,7 +3644,7 @@
 
     private void expectDisconnectAndClearNotifications(TestNetworkCallback callback,
             TestNetworkAgentWrapper agent, NotificationType type) {
-        callback.expect(CallbackEntry.LOST, agent);
+        callback.expect(LOST, agent);
         expectClearNotification(agent, type);
     }
 
@@ -3669,7 +3715,7 @@
         final NetworkAgentWrapper.Callbacks callbacks = new NetworkAgentWrapper.Callbacks(
                 onNetworkCreated, onNetworkUnwanted, onNetworkDisconnected);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, callbacks);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, callbacks);
 
         // Connect a network, and file a request for it after it has come up, to ensure the nascent
         // timer is cleared and the test does not have to wait for it. Filing the request after the
@@ -3677,13 +3723,13 @@
         // nascent timer if the first request satisfied by the network was filed before the network
         // connected.
         // TODO: fix this bug, file the request before connecting, and remove the waitForIdle.
-        mWiFiNetworkAgent.connectWithoutInternet();
+        mWiFiAgent.connectWithoutInternet();
         waitForIdle();
         mCm.requestNetwork(request, callback);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Set teardown delay and make sure CS has processed it.
-        mWiFiNetworkAgent.getNetworkAgent().setTeardownDelayMillis(300);
+        mWiFiAgent.getNetworkAgent().setTeardownDelayMillis(300);
         waitForIdle();
 
         // Post the duringTeardown lambda to the handler so it fires while teardown is in progress.
@@ -3691,7 +3737,7 @@
         // down the network and started the teardown timer, and short enough that the lambda is
         // scheduled to run before the teardown timer.
         final Handler h = new Handler(mCsHandlerThread.getLooper());
-        h.postDelayed(() -> duringTeardown.accept(mWiFiNetworkAgent.getNetwork()), 150);
+        h.postDelayed(() -> duringTeardown.accept(mWiFiAgent.getNetwork()), 150);
 
         // Disconnect the network and check that events happened in the right order.
         mCm.unregisterNetworkCallback(callback);
@@ -3712,106 +3758,104 @@
         mCm.registerNetworkCallback(request, callback);
 
         // Bring up validated cell.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         // Bring up unvalidated wifi with explicitlySelected=true.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(true, false);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(true, false);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Cell remains the default.
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Expect a high-priority NO_INTERNET notification.
-        expectUnvalidationCheckWillNotify(mWiFiNetworkAgent, NotificationType.NO_INTERNET);
+        expectUnvalidationCheckWillNotify(mWiFiAgent, NotificationType.NO_INTERNET);
 
         // Lower WiFi's score to lower than cell, and check that it doesn't disconnect because
         // it's explicitly selected.
-        mWiFiNetworkAgent.adjustScore(-40);
-        mWiFiNetworkAgent.adjustScore(40);
+        mWiFiAgent.adjustScore(-40);
+        mWiFiAgent.adjustScore(40);
         callback.assertNoCallback();
 
         // If the user chooses yes on the "No Internet access, stay connected?" dialog, we switch to
         // wifi even though it's unvalidated.
-        mCm.setAcceptUnvalidated(mWiFiNetworkAgent.getNetwork(), true, false);
-        callback.expectLosing(mCellNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCm.setAcceptUnvalidated(mWiFiAgent.getNetwork(), true, false);
+        callback.expectLosing(mCellAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Disconnect wifi, and then reconnect, again with explicitlySelected=true.
-        mWiFiNetworkAgent.disconnect();
-        expectDisconnectAndClearNotifications(callback, mWiFiNetworkAgent,
-                NotificationType.NO_INTERNET);
+        mWiFiAgent.disconnect();
+        expectDisconnectAndClearNotifications(callback, mWiFiAgent, NotificationType.NO_INTERNET);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(true, false);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(true, false);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Expect a high-priority NO_INTERNET notification.
-        expectUnvalidationCheckWillNotify(mWiFiNetworkAgent, NotificationType.NO_INTERNET);
+        expectUnvalidationCheckWillNotify(mWiFiAgent, NotificationType.NO_INTERNET);
 
         // If the user chooses no on the "No Internet access, stay connected?" dialog, we ask the
         // network to disconnect.
-        mCm.setAcceptUnvalidated(mWiFiNetworkAgent.getNetwork(), false, false);
-        expectDisconnectAndClearNotifications(callback, mWiFiNetworkAgent,
-                NotificationType.NO_INTERNET);
+        mCm.setAcceptUnvalidated(mWiFiAgent.getNetwork(), false, false);
+        expectDisconnectAndClearNotifications(callback, mWiFiAgent, NotificationType.NO_INTERNET);
         reset(mNotificationManager);
 
         // Reconnect, again with explicitlySelected=true, but this time validate.
         // Expect no notifications.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(true, false);
-        mWiFiNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(true, false);
+        mWiFiAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
 
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mEthernetNetworkAgent);
-        callback.expectLosing(mWiFiNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetNetworkAgent);
-        assertEquals(mEthernetNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mEthernetAgent);
+        callback.expectLosing(mWiFiAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mEthernetAgent);
+        assertEquals(mEthernetAgent.getNetwork(), mCm.getActiveNetwork());
         callback.assertNoCallback();
 
         // Disconnect wifi, and then reconnect as if the user had selected "yes, don't ask again"
         // (i.e., with explicitlySelected=true and acceptUnvalidated=true). Expect to switch to
         // wifi immediately.
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(true, true);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectLosing(mEthernetNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        mEthernetNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(true, true);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectLosing(mEthernetAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        mEthernetAgent.disconnect();
+        callback.expect(LOST, mEthernetAgent);
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
 
         // Disconnect and reconnect with explicitlySelected=false and acceptUnvalidated=true.
         // Check that the network is not scored specially and that the device prefers cell data.
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(false, true);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(false, true);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
 
         // Clean up.
-        mWiFiNetworkAgent.disconnect();
-        mCellNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
+        mCellAgent.disconnect();
 
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        callback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        callback.expect(LOST, mWiFiAgent);
+        callback.expect(LOST, mCellAgent);
     }
 
     private void doTestFirstEvaluation(
@@ -3825,36 +3869,36 @@
         TestNetworkCallback callback = new TestNetworkCallback();
         mCm.registerNetworkCallback(request, callback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        doConnect.accept(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        doConnect.accept(mWiFiAgent);
         // Expect the available callbacks, but don't require specific values for their arguments
         // since this method doesn't know how the network was connected.
-        callback.expect(CallbackEntry.AVAILABLE, mWiFiNetworkAgent);
-        callback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, mWiFiNetworkAgent);
-        callback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mWiFiNetworkAgent);
-        callback.expect(CallbackEntry.BLOCKED_STATUS, mWiFiNetworkAgent);
+        callback.expect(AVAILABLE, mWiFiAgent);
+        callback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+        callback.expect(LINK_PROPERTIES_CHANGED, mWiFiAgent);
+        callback.expect(BLOCKED_STATUS, mWiFiAgent);
         if (waitForSecondCaps) {
             // This is necessary because of b/245893397, the same bug that happens where we use
             // expectAvailableDoubleValidatedCallbacks.
-            callback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, mWiFiNetworkAgent);
+            callback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
         }
         final NetworkAgentInfo nai =
-                mService.getNetworkAgentInfoForNetwork(mWiFiNetworkAgent.getNetwork());
+                mService.getNetworkAgentInfoForNetwork(mWiFiAgent.getNetwork());
         final long firstEvaluation = nai.getFirstEvaluationConcludedTime();
         if (evaluatedByValidation) {
             assertNotEquals(0L, firstEvaluation);
         } else {
             assertEquals(0L, firstEvaluation);
         }
-        mService.scheduleEvaluationTimeout(mWiFiNetworkAgent.getNetwork(), 0L /* timeout */);
+        mService.scheduleEvaluationTimeout(mWiFiAgent.getNetwork(), 0L /* timeout */);
         waitForIdle();
         if (evaluatedByValidation) {
             assertEquals(firstEvaluation, nai.getFirstEvaluationConcludedTime());
         } else {
             assertNotEquals(0L, nai.getFirstEvaluationConcludedTime());
         }
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
 
         mCm.unregisterNetworkCallback(callback);
     }
@@ -4023,9 +4067,9 @@
 
     @Test
     public void testRegisterIgnoringScore() throws Exception {
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.setScore(new NetworkScore.Builder().setLegacyInt(90).build());
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.setScore(new NetworkScore.Builder().setLegacyInt(90).build());
+        mWiFiAgent.connect(true /* validated */);
 
         // Make sure the factory sees the default network
         final NetworkCapabilities filter = new NetworkCapabilities();
@@ -4048,13 +4092,13 @@
         testFactoryAll.expectRequestAdd();
 
         // The legacy int will be ignored anyway, set the only other knob to true
-        mWiFiNetworkAgent.setScore(new NetworkScore.Builder().setLegacyInt(110)
+        mWiFiAgent.setScore(new NetworkScore.Builder().setLegacyInt(110)
                 .setTransportPrimary(true).build());
 
         expectNoRequestChanged(testFactory); // still not seeing the request
         expectNoRequestChanged(testFactoryAll); // still seeing the request
 
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
     }
 
     @Test
@@ -4142,18 +4186,18 @@
     @Test
     public void testMMSonWiFi() throws Exception {
         // Test bringing up cellular without MMS NetworkRequest gets reaped
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_MMS);
-        mCellNetworkAgent.connectWithoutInternet();
-        mCellNetworkAgent.expectDisconnected();
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.addCapability(NET_CAPABILITY_MMS);
+        mCellAgent.connectWithoutInternet();
+        mCellAgent.expectDisconnected();
         waitForIdle();
         assertEmpty(mCm.getAllNetworks());
         verifyNoNetwork();
 
         // Test bringing up validated WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         final ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
 
@@ -4164,24 +4208,24 @@
         mCm.requestNetwork(builder.build(), networkCallback);
 
         // Test bringing up unvalidated cellular with MMS
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_MMS);
-        mCellNetworkAgent.connectWithoutInternet();
-        networkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.addCapability(NET_CAPABILITY_MMS);
+        mCellAgent.connectWithoutInternet();
+        networkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
         verifyActiveNetwork(TRANSPORT_WIFI);
 
         // Test releasing NetworkRequest disconnects cellular with MMS
         mCm.unregisterNetworkCallback(networkCallback);
-        mCellNetworkAgent.expectDisconnected();
+        mCellAgent.expectDisconnected();
         verifyActiveNetwork(TRANSPORT_WIFI);
     }
 
     @Test
     public void testMMSonCell() throws Exception {
         // Test bringing up cellular without MMS
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         ExpectedBroadcast b = expectConnectivityAction(TYPE_MOBILE, DetailedState.CONNECTED);
-        mCellNetworkAgent.connect(false);
+        mCellAgent.connect(false);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_CELLULAR);
 
@@ -4215,143 +4259,139 @@
         mCm.registerNetworkCallback(request, callback);
 
         // Bring up validated mobile data.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         // Bring up wifi with partial connectivity.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithPartialConnectivity();
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithPartialConnectivity();
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiAgent);
 
         // Mobile data should be the default network.
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         callback.assertNoCallback();
 
         // Expect a PARTIAL_CONNECTIVITY notification. The notification appears as soon as partial
         // connectivity is detected, and is low priority because the network was not explicitly
         // selected by the user. This happens if we reconnect to a network where the user previously
         // accepted partial connectivity without checking "always".
-        expectNotification(mWiFiNetworkAgent, NotificationType.PARTIAL_CONNECTIVITY);
+        expectNotification(mWiFiAgent, NotificationType.PARTIAL_CONNECTIVITY);
 
         // With HTTPS probe disabled, NetworkMonitor should pass the network validation with http
         // probe.
-        mWiFiNetworkAgent.setNetworkPartialValid(false /* privateDnsProbeSent */);
+        mWiFiAgent.setNetworkPartialValid(false /* privateDnsProbeSent */);
         // If the user chooses yes to use this partial connectivity wifi, switch the default
         // network to wifi and check if wifi becomes valid or not.
-        mCm.setAcceptPartialConnectivity(mWiFiNetworkAgent.getNetwork(), true /* accept */,
+        mCm.setAcceptPartialConnectivity(mWiFiAgent.getNetwork(), true /* accept */,
                 false /* always */);
         // If user accepts partial connectivity network,
         // NetworkMonitor#setAcceptPartialConnectivity() should be called too.
         waitForIdle();
-        verify(mWiFiNetworkAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
+        verify(mWiFiAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
 
         // Need a trigger point to let NetworkMonitor tell ConnectivityService that the network is
         // validated.
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        callback.expectLosing(mCellNetworkAgent);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        callback.expectLosing(mCellAgent);
         NetworkCapabilities nc = callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED,
-                mWiFiNetworkAgent);
+                mWiFiAgent);
         assertTrue(nc.hasCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Once the network validates, the notification disappears.
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.PARTIAL_CONNECTIVITY);
+        expectClearNotification(mWiFiAgent, NotificationType.PARTIAL_CONNECTIVITY);
 
         // Disconnect and reconnect wifi with partial connectivity again.
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithPartialConnectivity();
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithPartialConnectivity();
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiAgent);
 
         // Mobile data should be the default network.
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         waitForIdle();
 
         // Expect a low-priority PARTIAL_CONNECTIVITY notification as soon as partial connectivity
         // is detected.
-        expectNotification(mWiFiNetworkAgent, NotificationType.PARTIAL_CONNECTIVITY);
+        expectNotification(mWiFiAgent, NotificationType.PARTIAL_CONNECTIVITY);
 
         // If the user chooses no, disconnect wifi immediately.
-        mCm.setAcceptPartialConnectivity(mWiFiNetworkAgent.getNetwork(), false /* accept */,
+        mCm.setAcceptPartialConnectivity(mWiFiAgent.getNetwork(), false /* accept */,
                 false /* always */);
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.PARTIAL_CONNECTIVITY);
+        callback.expect(LOST, mWiFiAgent);
+        expectClearNotification(mWiFiAgent, NotificationType.PARTIAL_CONNECTIVITY);
         reset(mNotificationManager);
 
         // If the user accepted partial connectivity before, and the device connects to that network
         // again, but now the network has full connectivity, then the network shouldn't contain
         // NET_CAPABILITY_PARTIAL_CONNECTIVITY.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         // acceptUnvalidated is also used as setting for accepting partial networks.
-        mWiFiNetworkAgent.explicitlySelected(true /* explicitlySelected */,
-                true /* acceptUnvalidated */);
-        mWiFiNetworkAgent.connect(true);
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+        mWiFiAgent.explicitlySelected(true /* explicitlySelected */, true /* acceptUnvalidated */);
+        mWiFiAgent.connect(true);
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
 
         // If user accepted partial connectivity network before,
         // NetworkMonitor#setAcceptPartialConnectivity() will be called in
         // ConnectivityService#updateNetworkInfo().
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        verify(mWiFiNetworkAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
-        callback.expectLosing(mCellNetworkAgent);
-        nc = callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        verify(mWiFiAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
+        callback.expectLosing(mCellAgent);
+        nc = callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         assertFalse(nc.hasCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY));
 
         // Wifi should be the default network.
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
 
         // The user accepted partial connectivity and selected "don't ask again". Now the user
         // reconnects to the partial connectivity network. Switch to wifi as soon as partial
         // connectivity is detected.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(true /* explicitlySelected */,
-                true /* acceptUnvalidated */);
-        mWiFiNetworkAgent.connectWithPartialConnectivity();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(true /* explicitlySelected */, true /* acceptUnvalidated */);
+        mWiFiAgent.connectWithPartialConnectivity();
         // If user accepted partial connectivity network before,
         // NetworkMonitor#setAcceptPartialConnectivity() will be called in
         // ConnectivityService#updateNetworkInfo().
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        verify(mWiFiNetworkAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
-        callback.expectLosing(mCellNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiNetworkAgent);
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        verify(mWiFiAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
+        callback.expectLosing(mCellAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        callback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiAgent);
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
 
-        mWiFiNetworkAgent.setNetworkValid(false /* privateDnsProbeSent */);
+        mWiFiAgent.setNetworkValid(false /* privateDnsProbeSent */);
 
         // Need a trigger point to let NetworkMonitor tell ConnectivityService that the network is
         // validated.
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
 
         // If the user accepted partial connectivity, and the device auto-reconnects to the partial
         // connectivity network, it should contain both PARTIAL_CONNECTIVITY and VALIDATED.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.explicitlySelected(false /* explicitlySelected */,
-                true /* acceptUnvalidated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.explicitlySelected(false /* explicitlySelected */, true /* acceptUnvalidated */);
 
         // NetworkMonitor will immediately (once the HTTPS probe fails...) report the network as
         // valid, because ConnectivityService calls setAcceptPartialConnectivity before it calls
         // notifyNetworkConnected.
-        mWiFiNetworkAgent.connectWithPartialValidConnectivity(
-                false /* privateDnsProbeSent */);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        verify(mWiFiNetworkAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
-        callback.expectLosing(mCellNetworkAgent);
+        mWiFiAgent.connectWithPartialValidConnectivity(false /* privateDnsProbeSent */);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        verify(mWiFiAgent.mNetworkMonitor, times(1)).setAcceptPartialConnectivity();
+        callback.expectLosing(mCellAgent);
         callback.expectCapabilitiesWith(
-                NET_CAPABILITY_PARTIAL_CONNECTIVITY | NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+                NET_CAPABILITY_PARTIAL_CONNECTIVITY | NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        expectUnvalidationCheckWillNotNotify(mWiFiAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
         verifyNoMoreInteractions(mNotificationManager);
     }
 
@@ -4370,43 +4410,39 @@
 
         // Bring up a network with a captive portal.
         // Expect onAvailable callback of listen for NET_CAPABILITY_CAPTIVE_PORTAL.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         String redirectUrl = "http://android.com/path";
-        mWiFiNetworkAgent.connectWithCaptivePortal(redirectUrl,
-                false /* privateDnsProbeSent */);
-        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.waitForRedirectUrl(), redirectUrl);
+        mWiFiAgent.connectWithCaptivePortal(redirectUrl, false /* privateDnsProbeSent */);
+        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.waitForRedirectUrl(), redirectUrl);
 
         // This is necessary because of b/245893397, the same bug that happens where we use
         // expectAvailableDoubleValidatedCallbacks.
         // TODO : fix b/245893397 and remove this.
-        wifiCallback.expectCapabilitiesWith(NET_CAPABILITY_CAPTIVE_PORTAL, mWiFiNetworkAgent);
+        wifiCallback.expectCapabilitiesWith(NET_CAPABILITY_CAPTIVE_PORTAL, mWiFiAgent);
 
         // Check that startCaptivePortalApp sends the expected command to NetworkMonitor.
-        mCm.startCaptivePortalApp(mWiFiNetworkAgent.getNetwork());
-        verify(mWiFiNetworkAgent.mNetworkMonitor, timeout(TIMEOUT_MS).times(1))
-                .launchCaptivePortalApp();
+        mCm.startCaptivePortalApp(mWiFiAgent.getNetwork());
+        verify(mWiFiAgent.mNetworkMonitor, timeout(TIMEOUT_MS).times(1)).launchCaptivePortalApp();
 
         // Report that the captive portal is dismissed with partial connectivity, and check that
         // callbacks are fired with PARTIAL and without CAPTIVE_PORTAL.
-        mWiFiNetworkAgent.setNetworkPartial();
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
+        mWiFiAgent.setNetworkPartial();
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
         waitForIdle();
-        wifiCallback.expectCapabilitiesThat(
-                mWiFiNetworkAgent, nc ->
+        wifiCallback.expectCapabilitiesThat(mWiFiAgent, nc ->
                 nc.hasCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY)
-                && !nc.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL));
+                        && !nc.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL));
 
         // Report partial connectivity is accepted.
-        mWiFiNetworkAgent.setNetworkPartialValid(false /* privateDnsProbeSent */);
-        mCm.setAcceptPartialConnectivity(mWiFiNetworkAgent.getNetwork(), true /* accept */,
+        mWiFiAgent.setNetworkPartialValid(false /* privateDnsProbeSent */);
+        mCm.setAcceptPartialConnectivity(mWiFiAgent.getNetwork(), true /* accept */,
                 false /* always */);
         waitForIdle();
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        wifiCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        validatedCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        validatedCallback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY,
-                mWiFiNetworkAgent);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        wifiCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        validatedCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        validatedCallback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY, mWiFiAgent);
 
         mCm.unregisterNetworkCallback(wifiCallback);
         mCm.unregisterNetworkCallback(validatedCallback);
@@ -4426,41 +4462,39 @@
 
         // Bring up a network with a captive portal.
         // Expect onAvailable callback of listen for NET_CAPABILITY_CAPTIVE_PORTAL.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         String firstRedirectUrl = "http://example.com/firstPath";
-        mWiFiNetworkAgent.connectWithCaptivePortal(firstRedirectUrl,
-                false /* privateDnsProbeSent */);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.waitForRedirectUrl(), firstRedirectUrl);
+        mWiFiAgent.connectWithCaptivePortal(firstRedirectUrl, false /* privateDnsProbeSent */);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.waitForRedirectUrl(), firstRedirectUrl);
 
         // Take down network.
         // Expect onLost callback.
-        mWiFiNetworkAgent.disconnect();
-        captivePortalCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        captivePortalCallback.expect(LOST, mWiFiAgent);
 
         // Bring up a network with a captive portal.
         // Expect onAvailable callback of listen for NET_CAPABILITY_CAPTIVE_PORTAL.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         String secondRedirectUrl = "http://example.com/secondPath";
-        mWiFiNetworkAgent.connectWithCaptivePortal(secondRedirectUrl,
-                false /* privateDnsProbeSent */);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.waitForRedirectUrl(), secondRedirectUrl);
+        mWiFiAgent.connectWithCaptivePortal(secondRedirectUrl, false /* privateDnsProbeSent */);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.waitForRedirectUrl(), secondRedirectUrl);
 
         // Make captive portal disappear then revalidate.
         // Expect onLost callback because network no longer provides NET_CAPABILITY_CAPTIVE_PORTAL.
-        mWiFiNetworkAgent.setNetworkValid(false /* privateDnsProbeSent */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        captivePortalCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkValid(false /* privateDnsProbeSent */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        captivePortalCallback.expect(LOST, mWiFiAgent);
 
         // Expect NET_CAPABILITY_VALIDATED onAvailable callback.
-        validatedCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        validatedCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
 
         // Break network connectivity.
         // Expect NET_CAPABILITY_VALIDATED onLost callback.
-        mWiFiNetworkAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
-        validatedCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
+        validatedCallback.expect(LOST, mWiFiAgent);
     }
 
     private Intent startCaptivePortalApp(TestNetworkAgentWrapper networkAgent) throws Exception {
@@ -4497,37 +4531,35 @@
         mCm.registerNetworkCallback(validatedRequest, validatedCallback);
 
         // Bring up wifi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        validatedCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        Network wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        validatedCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        Network wifiNetwork = mWiFiAgent.getNetwork();
 
         // Check that calling startCaptivePortalApp does nothing.
         final int fastTimeoutMs = 100;
         mCm.startCaptivePortalApp(wifiNetwork);
         waitForIdle();
-        verify(mWiFiNetworkAgent.mNetworkMonitor, never()).launchCaptivePortalApp();
+        verify(mWiFiAgent.mNetworkMonitor, never()).launchCaptivePortalApp();
         mServiceContext.expectNoStartActivityIntent(fastTimeoutMs);
 
         // Turn into a captive portal.
-        mWiFiNetworkAgent.setNetworkPortal("http://example.com",
-                false /* privateDnsProbeSent */);
+        mWiFiAgent.setNetworkPortal("http://example.com", false /* privateDnsProbeSent */);
         mCm.reportNetworkConnectivity(wifiNetwork, false);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        validatedCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        validatedCallback.expect(LOST, mWiFiAgent);
         // This is necessary because of b/245893397, the same bug that happens where we use
         // expectAvailableDoubleValidatedCallbacks.
         // TODO : fix b/245893397 and remove this.
-        captivePortalCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                mWiFiNetworkAgent);
+        captivePortalCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
 
-        startCaptivePortalApp(mWiFiNetworkAgent);
+        startCaptivePortalApp(mWiFiAgent);
 
         // Report that the captive portal is dismissed, and check that callbacks are fired
-        mWiFiNetworkAgent.setNetworkValid(false /* privateDnsProbeSent */);
-        mWiFiNetworkAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
-        validatedCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        captivePortalCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkValid(false /* privateDnsProbeSent */);
+        mWiFiAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
+        validatedCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        captivePortalCallback.expect(LOST, mWiFiAgent);
 
         mCm.unregisterNetworkCallback(validatedCallback);
         mCm.unregisterNetworkCallback(captivePortalCallback);
@@ -4540,11 +4572,11 @@
                 .addCapability(NET_CAPABILITY_CAPTIVE_PORTAL).build();
         mCm.registerNetworkCallback(captivePortalRequest, captivePortalCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connectWithCaptivePortal(TEST_REDIRECT_URL, false);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connectWithCaptivePortal(TEST_REDIRECT_URL, false);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
-        final Intent signInIntent = startCaptivePortalApp(mWiFiNetworkAgent);
+        final Intent signInIntent = startCaptivePortalApp(mWiFiAgent);
         final CaptivePortal captivePortal = signInIntent
                 .getParcelableExtra(ConnectivityManager.EXTRA_CAPTIVE_PORTAL);
 
@@ -4552,14 +4584,14 @@
         waitForIdle();
 
         // Since network will disconnect, ensure no notification of response to NetworkMonitor
-        verify(mWiFiNetworkAgent.mNetworkMonitor, never())
+        verify(mWiFiAgent.mNetworkMonitor, never())
                 .notifyCaptivePortalAppFinished(CaptivePortal.APP_RETURN_UNWANTED);
 
         // Report that the network is disconnected
-        mWiFiNetworkAgent.expectDisconnected();
-        mWiFiNetworkAgent.expectPreventReconnectReceived();
-        verify(mWiFiNetworkAgent.mNetworkMonitor).notifyNetworkDisconnected();
-        captivePortalCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.expectDisconnected();
+        mWiFiAgent.expectPreventReconnectReceived();
+        verify(mWiFiAgent.mNetworkMonitor).notifyNetworkDisconnected();
+        captivePortalCallback.expect(LOST, mWiFiAgent);
 
         mCm.unregisterNetworkCallback(captivePortalCallback);
     }
@@ -4579,13 +4611,12 @@
         setCaptivePortalMode(ConnectivitySettingsManager.CAPTIVE_PORTAL_MODE_AVOID);
         // Bring up a network with a captive portal.
         // Expect it to fail to connect and not result in any callbacks.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        String firstRedirectUrl = "http://example.com/firstPath";
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        final String firstRedirectUrl = "http://example.com/firstPath";
 
-        mWiFiNetworkAgent.connectWithCaptivePortal(firstRedirectUrl,
-                false /* privateDnsProbeSent */);
-        mWiFiNetworkAgent.expectDisconnected();
-        mWiFiNetworkAgent.expectPreventReconnectReceived();
+        mWiFiAgent.connectWithCaptivePortal(firstRedirectUrl, false /* privateDnsProbeSent */);
+        mWiFiAgent.expectDisconnected();
+        mWiFiAgent.expectPreventReconnectReceived();
 
         assertNoCallbacks(captivePortalCallback, validatedCallback);
     }
@@ -4599,28 +4630,28 @@
                 .addCapability(NET_CAPABILITY_CAPTIVE_PORTAL).build();
         mCm.registerNetworkCallback(captivePortalRequest, captivePortalCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         final String redirectUrl = "http://example.com/firstPath";
 
-        mWiFiNetworkAgent.connectWithCaptivePortal(redirectUrl,
+        mWiFiAgent.connectWithCaptivePortal(redirectUrl,
                 false /* privateDnsProbeSent */);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         final CaptivePortalData testData = new CaptivePortalData.Builder()
                 .setUserPortalUrl(Uri.parse(redirectUrl))
                 .setBytesRemaining(12345L)
                 .build();
 
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(testData);
+        mWiFiAgent.notifyCapportApiDataChanged(testData);
 
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> testData.equals(lp.getCaptivePortalData()));
 
         final LinkProperties newLps = new LinkProperties();
         newLps.setMtu(1234);
-        mWiFiNetworkAgent.sendLinkProperties(newLps);
+        mWiFiAgent.sendLinkProperties(newLps);
         // CaptivePortalData is not lost and unchanged when LPs are received from the NetworkAgent
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> testData.equals(lp.getCaptivePortalData()) && lp.getMtu() == 1234);
     }
 
@@ -4634,11 +4665,11 @@
                 .addCapability(NET_CAPABILITY_CAPTIVE_PORTAL).build();
         mCm.registerNetworkCallback(captivePortalRequest, captivePortalCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
 
-        mWiFiNetworkAgent.connectWithCaptivePortal(TEST_REDIRECT_URL,
+        mWiFiAgent.connectWithCaptivePortal(TEST_REDIRECT_URL,
                 false /* privateDnsProbeSent */);
-        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        captivePortalCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         return captivePortalCallback;
     }
 
@@ -4713,52 +4744,52 @@
         final CaptivePortalTestData captivePortalTestData = setupCaptivePortalData();
 
         // Baseline capport data
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
+        mWiFiAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
 
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mCapportData.equals(lp.getCaptivePortalData()));
 
         // Venue URL, T&C URL and friendly name from Network agent with Passpoint source, confirm
         // that API data gets precedence on the bytes remaining.
         final LinkProperties linkProperties = new LinkProperties();
         linkProperties.setCaptivePortalData(captivePortalTestData.mNaPasspointData);
-        mWiFiNetworkAgent.sendLinkProperties(linkProperties);
+        mWiFiAgent.sendLinkProperties(linkProperties);
 
         // Make sure that the capport data is merged
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mExpectedMergedPasspointData
                         .equals(lp.getCaptivePortalData()));
 
         // Now send this information from non-Passpoint source, confirm that Capport data takes
         // precedence
         linkProperties.setCaptivePortalData(captivePortalTestData.mNaOtherData);
-        mWiFiNetworkAgent.sendLinkProperties(linkProperties);
+        mWiFiAgent.sendLinkProperties(linkProperties);
 
         // Make sure that the capport data is merged
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mExpectedMergedOtherData
                         .equals(lp.getCaptivePortalData()));
 
         // Create a new LP with no Network agent capport data
         final LinkProperties newLps = new LinkProperties();
         newLps.setMtu(1234);
-        mWiFiNetworkAgent.sendLinkProperties(newLps);
+        mWiFiAgent.sendLinkProperties(newLps);
         // CaptivePortalData is not lost and has the original values when LPs are received from the
         // NetworkAgent
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mCapportData.equals(lp.getCaptivePortalData())
                         && lp.getMtu() == 1234);
 
         // Now send capport data only from the Network agent
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(null);
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        mWiFiAgent.notifyCapportApiDataChanged(null);
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> lp.getCaptivePortalData() == null);
 
         newLps.setCaptivePortalData(captivePortalTestData.mNaPasspointData);
-        mWiFiNetworkAgent.sendLinkProperties(newLps);
+        mWiFiAgent.sendLinkProperties(newLps);
 
         // Make sure that only the network agent capport data is available
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mNaPasspointData.equals(lp.getCaptivePortalData()));
     }
 
@@ -4771,27 +4802,27 @@
         // on the bytes remaining.
         final LinkProperties linkProperties = new LinkProperties();
         linkProperties.setCaptivePortalData(captivePortalTestData.mNaPasspointData);
-        mWiFiNetworkAgent.sendLinkProperties(linkProperties);
+        mWiFiAgent.sendLinkProperties(linkProperties);
 
         // Make sure that the data is saved correctly
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mNaPasspointData.equals(lp.getCaptivePortalData()));
 
         // Expected merged data: Network agent data is preferred, and values that are not used by
         // it are merged from capport data
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
+        mWiFiAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
 
         // Make sure that the Capport data is merged correctly
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mExpectedMergedPasspointData.equals(
                         lp.getCaptivePortalData()));
 
         // Now set the naData to null
         linkProperties.setCaptivePortalData(null);
-        mWiFiNetworkAgent.sendLinkProperties(linkProperties);
+        mWiFiAgent.sendLinkProperties(linkProperties);
 
         // Make sure that the Capport data is retained correctly
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mCapportData.equals(lp.getCaptivePortalData()));
     }
 
@@ -4805,18 +4836,18 @@
         // on the bytes remaining.
         final LinkProperties linkProperties = new LinkProperties();
         linkProperties.setCaptivePortalData(captivePortalTestData.mNaOtherData);
-        mWiFiNetworkAgent.sendLinkProperties(linkProperties);
+        mWiFiAgent.sendLinkProperties(linkProperties);
 
         // Make sure that the data is saved correctly
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mNaOtherData.equals(lp.getCaptivePortalData()));
 
         // Expected merged data: Network agent data is preferred, and values that are not used by
         // it are merged from capport data
-        mWiFiNetworkAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
+        mWiFiAgent.notifyCapportApiDataChanged(captivePortalTestData.mCapportData);
 
         // Make sure that the Capport data is merged correctly
-        captivePortalCallback.expectLinkPropertiesThat(mWiFiNetworkAgent,
+        captivePortalCallback.expectLinkPropertiesThat(mWiFiAgent,
                 lp -> captivePortalTestData.mExpectedMergedOtherData.equals(
                         lp.getCaptivePortalData()));
     }
@@ -4938,51 +4969,50 @@
         LocalStringNetworkSpecifier nsFoo = new LocalStringNetworkSpecifier("foo");
         LocalStringNetworkSpecifier nsBar = new LocalStringNetworkSpecifier("bar");
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiNetworkAgent, null /* specifier */,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiAgent, null /* specifier */,
                 cEmpty1, cEmpty2, cEmpty3, cEmpty4);
         assertNoCallbacks(cFoo, cBar);
 
-        mWiFiNetworkAgent.disconnect();
-        expectOnLost(mWiFiNetworkAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4);
+        mWiFiAgent.disconnect();
+        expectOnLost(mWiFiAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.setNetworkSpecifier(nsFoo);
-        mWiFiNetworkAgent.connect(false);
-        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiNetworkAgent, nsFoo,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.setNetworkSpecifier(nsFoo);
+        mWiFiAgent.connect(false);
+        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiAgent, nsFoo,
                 cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo);
         cBar.assertNoCallback();
         assertEquals(nsFoo,
-                mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).getNetworkSpecifier());
+                mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).getNetworkSpecifier());
         assertNoCallbacks(cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo);
 
-        mWiFiNetworkAgent.disconnect();
-        expectOnLost(mWiFiNetworkAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo);
+        mWiFiAgent.disconnect();
+        expectOnLost(mWiFiAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.setNetworkSpecifier(nsBar);
-        mWiFiNetworkAgent.connect(false);
-        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiNetworkAgent, nsBar,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.setNetworkSpecifier(nsBar);
+        mWiFiAgent.connect(false);
+        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiAgent, nsBar,
                 cEmpty1, cEmpty2, cEmpty3, cEmpty4, cBar);
         cFoo.assertNoCallback();
         assertEquals(nsBar,
-                mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).getNetworkSpecifier());
+                mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).getNetworkSpecifier());
 
-        mWiFiNetworkAgent.disconnect();
-        expectOnLost(mWiFiNetworkAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cBar);
+        mWiFiAgent.disconnect();
+        expectOnLost(mWiFiAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cBar);
         cFoo.assertNoCallback();
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.setNetworkSpecifier(new ConfidentialMatchAllNetworkSpecifier());
-        mWiFiNetworkAgent.connect(false);
-        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiNetworkAgent, null /* specifier */,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.setNetworkSpecifier(new ConfidentialMatchAllNetworkSpecifier());
+        mWiFiAgent.connect(false);
+        expectAvailableCallbacksUnvalidatedWithSpecifier(mWiFiAgent, null /* specifier */,
                 cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo, cBar);
-        assertNull(
-                mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).getNetworkSpecifier());
+        assertNull(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).getNetworkSpecifier());
 
-        mWiFiNetworkAgent.disconnect();
-        expectOnLost(mWiFiNetworkAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo, cBar);
+        mWiFiAgent.disconnect();
+        expectOnLost(mWiFiAgent, cEmpty1, cEmpty2, cEmpty3, cEmpty4, cFoo, cBar);
     }
 
     /**
@@ -5061,8 +5091,8 @@
 
     @Test
     public void testNetworkRequestUidSpoofSecurityException() throws Exception {
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         NetworkRequest networkRequest = newWifiRequestBuilder().build();
         TestNetworkCallback networkCallback = new TestNetworkCallback();
         doThrow(new SecurityException()).when(mAppOpsManager).checkPackage(anyInt(), anyString());
@@ -5117,35 +5147,35 @@
         cellNetworkCallback.assertNoCallback();
 
         // Bring up cell and expect CALLBACK_AVAILABLE.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        systemDefaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        systemDefaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
         assertEquals(systemDefaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Bring up wifi and expect CALLBACK_AVAILABLE.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         cellNetworkCallback.assertNoCallback();
-        defaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        systemDefaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        defaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        systemDefaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
         assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
         assertEquals(systemDefaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Bring down cell. Expect no default network callback, since it wasn't the default.
-        mCellNetworkAgent.disconnect();
-        cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        cellNetworkCallback.expect(LOST, mCellAgent);
         defaultNetworkCallback.assertNoCallback();
         systemDefaultCallback.assertNoCallback();
         assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
         assertEquals(systemDefaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         // Bring up cell. Expect no default network callback, since it won't be the default.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         defaultNetworkCallback.assertNoCallback();
         systemDefaultCallback.assertNoCallback();
         assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
@@ -5153,16 +5183,16 @@
 
         // Bring down wifi. Expect the default network callback to notified of LOST wifi
         // followed by AVAILABLE cell.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         cellNetworkCallback.assertNoCallback();
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        systemDefaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        systemDefaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        mCellNetworkAgent.disconnect();
-        cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        systemDefaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        defaultNetworkCallback.expect(LOST, mWiFiAgent);
+        defaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
+        systemDefaultCallback.expect(LOST, mWiFiAgent);
+        systemDefaultCallback.expectAvailableCallbacksValidated(mCellAgent);
+        mCellAgent.disconnect();
+        cellNetworkCallback.expect(LOST, mCellAgent);
+        defaultNetworkCallback.expect(LOST, mCellAgent);
+        systemDefaultCallback.expect(LOST, mCellAgent);
         waitForIdle();
         assertEquals(null, mCm.getActiveNetwork());
 
@@ -5174,7 +5204,7 @@
         assertEquals(null, systemDefaultCallback.getLastAvailableNetwork());
 
         mMockVpn.disconnect();
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mMockVpn);
+        defaultNetworkCallback.expect(LOST, mMockVpn);
         systemDefaultCallback.assertNoCallback();
         waitForIdle();
         assertEquals(null, mCm.getActiveNetwork());
@@ -5189,29 +5219,27 @@
         mCm.requestNetwork(cellRequest, cellNetworkCallback);
 
         // Bring up the mobile network.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         // We should get onAvailable(), onCapabilitiesChanged(), and
         // onLinkPropertiesChanged() in rapid succession. Additionally, we
         // should get onCapabilitiesChanged() when the mobile network validates.
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         cellNetworkCallback.assertNoCallback();
 
         // Update LinkProperties.
         final LinkProperties lp = new LinkProperties();
         lp.setInterfaceName("foonet_data0");
-        mCellNetworkAgent.sendLinkProperties(lp);
+        mCellAgent.sendLinkProperties(lp);
         // We should get onLinkPropertiesChanged().
-        cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
 
         // Suspend the network.
-        mCellNetworkAgent.suspend();
-        cellNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_SUSPENDED,
-                mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.SUSPENDED, mCellNetworkAgent);
+        mCellAgent.suspend();
+        cellNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_SUSPENDED, mCellAgent);
+        cellNetworkCallback.expect(SUSPENDED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertEquals(NetworkInfo.State.SUSPENDED, mCm.getActiveNetworkInfo().getState());
 
@@ -5220,21 +5248,20 @@
         mCm.registerDefaultNetworkCallback(dfltNetworkCallback);
         // We should get onAvailable(), onCapabilitiesChanged(), onLinkPropertiesChanged(),
         // as well as onNetworkSuspended() in rapid succession.
-        dfltNetworkCallback.expectAvailableAndSuspendedCallbacks(mCellNetworkAgent, true);
+        dfltNetworkCallback.expectAvailableAndSuspendedCallbacks(mCellAgent, true);
         dfltNetworkCallback.assertNoCallback();
         mCm.unregisterNetworkCallback(dfltNetworkCallback);
 
-        mCellNetworkAgent.resume();
-        cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_SUSPENDED,
-                mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.RESUMED, mCellNetworkAgent);
+        mCellAgent.resume();
+        cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_SUSPENDED, mCellAgent);
+        cellNetworkCallback.expect(RESUMED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertEquals(NetworkInfo.State.CONNECTED, mCm.getActiveNetworkInfo().getState());
 
         dfltNetworkCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(dfltNetworkCallback);
         // This time onNetworkSuspended should not be called.
-        dfltNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        dfltNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         dfltNetworkCallback.assertNoCallback();
 
         mCm.unregisterNetworkCallback(dfltNetworkCallback);
@@ -5243,8 +5270,8 @@
 
     @Test
     public void testRegisterPrivilegedDefaultCallbacksRequirePermissions() throws Exception {
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false /* validated */);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false /* validated */);
         mServiceContext.setPermission(CONNECTIVITY_USE_RESTRICTED_NETWORKS, PERMISSION_DENIED);
 
         final Handler handler = new Handler(ConnectivityThread.getInstanceLooper());
@@ -5259,16 +5286,16 @@
         mServiceContext.setPermission(CONNECTIVITY_USE_RESTRICTED_NETWORKS, PERMISSION_GRANTED);
         mCm.registerSystemDefaultNetworkCallback(callback, handler);
         mServiceContext.setPermission(CONNECTIVITY_USE_RESTRICTED_NETWORKS, PERMISSION_DENIED);
-        callback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mCellAgent);
         mCm.unregisterNetworkCallback(callback);
 
         mServiceContext.setPermission(NETWORK_SETTINGS, PERMISSION_GRANTED);
         mCm.registerSystemDefaultNetworkCallback(callback, handler);
-        callback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mCellAgent);
         mCm.unregisterNetworkCallback(callback);
 
         mCm.registerDefaultNetworkCallbackForUid(APP1_UID, callback, handler);
-        callback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mCellAgent);
         mCm.unregisterNetworkCallback(callback);
     }
 
@@ -5299,15 +5326,15 @@
         mCm.registerNetworkCallback(includeOtherUidsRequest, includeOtherUidsCallback);
 
         // Both callbacks see a network with no specifier that applies to their UID.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        otherUidCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        includeOtherUidsCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        otherUidCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        includeOtherUidsCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        otherUidCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        includeOtherUidsCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        otherUidCallback.expect(LOST, mWiFiAgent);
+        includeOtherUidsCallback.expect(LOST, mWiFiAgent);
 
         // Only the includeOtherUidsCallback sees a VPN that does not apply to its UID.
         final UidRange range = UidRange.createForUser(UserHandle.of(RESTRICTED_USER));
@@ -5318,7 +5345,7 @@
         otherUidCallback.assertNoCallback();
 
         mMockVpn.disconnect();
-        includeOtherUidsCallback.expect(CallbackEntry.LOST, mMockVpn);
+        includeOtherUidsCallback.expect(LOST, mMockVpn);
         callback.assertNoCallback();
         otherUidCallback.assertNoCallback();
     }
@@ -5383,10 +5410,10 @@
         final NetworkCapabilities ncTemplate = new NetworkCapabilities()
                 .addTransportType(TRANSPORT_WIFI)
                 .setNetworkSpecifier(specifier);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, emptyLp, ncTemplate);
-        mWiFiNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        otherUidCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, emptyLp, ncTemplate);
+        mWiFiAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        otherUidCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         includeOtherUidsCallback.assertNoCallback();
     }
 
@@ -5441,63 +5468,63 @@
         mCm.registerNetworkCallback(request, callback);
         mCm.registerNetworkCallback(fgRequest, fgCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        fgCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertTrue(isForegroundNetwork(mCellNetworkAgent));
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        fgCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertTrue(isForegroundNetwork(mCellAgent));
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
 
         // When wifi connects, cell lingers.
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expectLosing(mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        fgCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        fgCallback.expectLosing(mCellNetworkAgent);
-        fgCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        assertTrue(isForegroundNetwork(mCellNetworkAgent));
-        assertTrue(isForegroundNetwork(mWiFiNetworkAgent));
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expectLosing(mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        fgCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        fgCallback.expectLosing(mCellAgent);
+        fgCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        assertTrue(isForegroundNetwork(mCellAgent));
+        assertTrue(isForegroundNetwork(mWiFiAgent));
 
         // When lingering is complete, cell is still there but is now in the background.
         waitForIdle();
         int timeoutMs = TEST_LINGER_DELAY_MS + TEST_LINGER_DELAY_MS / 4;
-        fgCallback.expect(CallbackEntry.LOST, mCellNetworkAgent, timeoutMs);
+        fgCallback.expect(LOST, mCellAgent, timeoutMs);
         // Expect a network capabilities update sans FOREGROUND.
-        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellNetworkAgent);
-        assertFalse(isForegroundNetwork(mCellNetworkAgent));
-        assertTrue(isForegroundNetwork(mWiFiNetworkAgent));
+        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellAgent);
+        assertFalse(isForegroundNetwork(mCellAgent));
+        assertTrue(isForegroundNetwork(mWiFiAgent));
 
         // File a cell request and check that cell comes into the foreground.
         final NetworkRequest cellRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_CELLULAR).build();
         final TestNetworkCallback cellCallback = new TestNetworkCallback();
         mCm.requestNetwork(cellRequest, cellCallback);
-        cellCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        fgCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        cellCallback.expectAvailableCallbacksValidated(mCellAgent);
+        fgCallback.expectAvailableCallbacksValidated(mCellAgent);
         // Expect a network capabilities update with FOREGROUND, because the most recent
         // request causes its state to change.
-        cellCallback.expectCapabilitiesWith(NET_CAPABILITY_FOREGROUND, mCellNetworkAgent);
-        callback.expectCapabilitiesWith(NET_CAPABILITY_FOREGROUND, mCellNetworkAgent);
-        assertTrue(isForegroundNetwork(mCellNetworkAgent));
-        assertTrue(isForegroundNetwork(mWiFiNetworkAgent));
+        cellCallback.expectCapabilitiesWith(NET_CAPABILITY_FOREGROUND, mCellAgent);
+        callback.expectCapabilitiesWith(NET_CAPABILITY_FOREGROUND, mCellAgent);
+        assertTrue(isForegroundNetwork(mCellAgent));
+        assertTrue(isForegroundNetwork(mWiFiAgent));
 
         // Release the request. The network immediately goes into the background, since it was not
         // lingering.
         mCm.unregisterNetworkCallback(cellCallback);
-        fgCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        fgCallback.expect(LOST, mCellAgent);
         // Expect a network capabilities update sans FOREGROUND.
-        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellNetworkAgent);
-        assertFalse(isForegroundNetwork(mCellNetworkAgent));
-        assertTrue(isForegroundNetwork(mWiFiNetworkAgent));
+        callback.expectCapabilitiesWithout(NET_CAPABILITY_FOREGROUND, mCellAgent);
+        assertFalse(isForegroundNetwork(mCellAgent));
+        assertTrue(isForegroundNetwork(mWiFiAgent));
 
         // Disconnect wifi and check that cell is foreground again.
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        fgCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        fgCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        assertTrue(isForegroundNetwork(mCellNetworkAgent));
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        fgCallback.expect(LOST, mWiFiAgent);
+        fgCallback.expectAvailableCallbacksValidated(mCellAgent);
+        assertTrue(isForegroundNetwork(mCellAgent));
 
         mCm.unregisterNetworkCallback(callback);
         mCm.unregisterNetworkCallback(fgCallback);
@@ -5538,11 +5565,11 @@
             }
         });
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         // Don't request that the network validate, because otherwise connect() will block until
         // the network gets NET_CAPABILITY_VALIDATED, after all the callbacks below have fired,
         // and we won't actually measure anything.
-        mCellNetworkAgent.connect(false);
+        mCellAgent.connect(false);
 
         long onAvailableDispatchingDuration = durationOf(() -> {
             await(availableLatch, 10 * CONNECT_TIME_LIMIT_MS);
@@ -5555,9 +5582,9 @@
                 onAvailableDispatchingDuration <= CONNECT_TIME_LIMIT_MS);
 
         // Give wifi a high enough score that we'll linger cell when wifi comes up.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.adjustScore(40);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.adjustScore(40);
+        mWiFiAgent.connect(false);
 
         long onLostDispatchingDuration = durationOf(() -> {
             await(losingLatch, 10 * SWITCH_TIME_LIMIT_MS);
@@ -5603,9 +5630,9 @@
             assertTrue(testFactory.getMyStartRequested());
 
             // Bring up wifi. The factory stops looking for a network.
-            mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+            mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
             // Score 60 - 40 penalty for not validated yet, then 60 when it validates
-            mWiFiNetworkAgent.connect(true);
+            mWiFiAgent.connect(true);
             // The network connects with a low score, so the offer can still beat it and
             // nothing happens. Then the network validates, and the offer with its filter score
             // of 40 can no longer beat it and the request is removed.
@@ -5624,9 +5651,9 @@
 
             // Bring up cell data and check that the factory stops looking.
             assertLength(1, mCm.getAllNetworks());
-            mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-            mCellNetworkAgent.connect(false);
-            cellNetworkCallback.expectAvailableCallbacks(mCellNetworkAgent, false, false, false,
+            mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+            mCellAgent.connect(false);
+            cellNetworkCallback.expectAvailableCallbacks(mCellAgent, false, false, false,
                     TEST_CALLBACK_TIMEOUT_MS);
             // When cell connects, it will satisfy the "mobile always on request" right away
             // by virtue of being the only network that can satisfy the request. However, its
@@ -5636,11 +5663,11 @@
             // Next, cell validates. This gives it a score of 50 and the test factory can't
             // hope to beat that according to its filters. It will see the message that its
             // offer is now unnecessary.
-            mCellNetworkAgent.setNetworkValid(true);
+            mCellAgent.setNetworkValid(true);
             // Need a trigger point to let NetworkMonitor tell ConnectivityService that network is
             // validated – see testPartialConnectivity.
-            mCm.reportNetworkConnectivity(mCellNetworkAgent.getNetwork(), true);
-            cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mCellNetworkAgent);
+            mCm.reportNetworkConnectivity(mCellAgent.getNetwork(), true);
+            cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mCellAgent);
             testFactory.expectRequestRemove();
             testFactory.assertRequestCountEquals(0);
             // Accordingly, the factory shouldn't be started.
@@ -5653,8 +5680,8 @@
 
             // Cell disconnects. There is still the "mobile data always on" request outstanding,
             // and the test factory should see it now that it isn't hopelessly outscored.
-            mCellNetworkAgent.disconnect();
-            cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+            mCellAgent.disconnect();
+            cellNetworkCallback.expect(LOST, mCellAgent);
             // Wait for the network to be removed from internal structures before
             // calling synchronous getter
             waitForIdle();
@@ -5665,9 +5692,9 @@
             // Reconnect cell validated, see the request disappear again. Then withdraw the
             // mobile always on request. This will tear down cell, and there shouldn't be a
             // blip where the test factory briefly sees the request or anything.
-            mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-            mCellNetworkAgent.connect(true);
-            cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+            mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+            mCellAgent.connect(true);
+            cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
             waitForIdle();
             assertLength(2, mCm.getAllNetworks());
             testFactory.expectRequestRemove();
@@ -5677,7 +5704,7 @@
             testFactory.assertRequestCountEquals(0);
             assertFalse(testFactory.getMyStartRequested());
             // ...  and cell data to be torn down immediately since it is no longer nascent.
-            cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+            cellNetworkCallback.expect(LOST, mCellAgent);
             waitForIdle();
             assertLength(1, mCm.getAllNetworks());
             testFactory.terminate();
@@ -5822,39 +5849,39 @@
         mCm.registerNetworkCallback(wifiRequest, wifiNetworkCallback);
 
         // Cell connects and validates.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR,
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR,
                 new LinkProperties(), null /* ncTemplate */, cellProvider);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         cellCallback.assertNoCallback();
         wifiCallback.assertNoCallback();
 
         // Bring up wifi. At first it's invalidated, so cell is still needed.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI,
                 new LinkProperties(), null /* ncTemplate */, wifiProvider);
-        mWiFiNetworkAgent.connect(false);
-        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent.connect(false);
+        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         cellCallback.assertNoCallback();
         wifiCallback.assertNoCallback();
 
         // Wifi validates. Cell is no longer needed, because it's outscored.
-        mWiFiNetworkAgent.setNetworkValid(true /* privateDnsProbeSent */);
+        mWiFiAgent.setNetworkValid(true /* privateDnsProbeSent */);
         // Have CS reconsider the network (see testPartialConnectivity)
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         cellCallback.expectOnNetworkUnneeded(defaultCaps);
         wifiCallback.assertNoCallback();
 
         // Wifi is no longer validated. Cell is needed again.
-        mWiFiNetworkAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
-        wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
+        wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         cellCallback.expectOnNetworkNeeded(defaultCaps);
         wifiCallback.assertNoCallback();
 
         // Disconnect wifi and pretend the carrier restricts moving away from bad wifi.
-        mWiFiNetworkAgent.disconnect();
-        wifiNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        wifiNetworkCallback.expect(LOST, mWiFiAgent);
         // This has getAvoidBadWifi return false. This test doesn't change the value of the
         // associated setting.
         doReturn(0).when(mResources).getInteger(R.integer.config_networkAvoidBadWifi);
@@ -5862,23 +5889,23 @@
         waitForIdle();
 
         // Connect wifi again, cell is needed until wifi validates.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI,
                 new LinkProperties(), null /* ncTemplate */, wifiProvider);
-        mWiFiNetworkAgent.connect(false);
-        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent.connect(false);
+        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         cellCallback.assertNoCallback();
         wifiCallback.assertNoCallback();
-        mWiFiNetworkAgent.setNetworkValid(true /* privateDnsProbeSent */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-        wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkValid(true /* privateDnsProbeSent */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+        wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         cellCallback.expectOnNetworkUnneeded(defaultCaps);
         wifiCallback.assertNoCallback();
 
         // Wifi loses validation. Because the device doesn't avoid bad wifis, cell is
         // not needed.
-        mWiFiNetworkAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
-        wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
+        wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         cellCallback.assertNoCallback();
         wifiCallback.assertNoCallback();
     }
@@ -5896,23 +5923,23 @@
                 .clearCapabilities()
                 .addTransportType(TRANSPORT_WIFI)
                 .build();
-        final TestableNetworkCallback wifiCallback = new TestableNetworkCallback();
+        final TestNetworkCallback wifiCallback = new TestNetworkCallback();
         mCm.registerNetworkCallback(wifiRequest, wifiCallback);
 
         // Bring up validated cell and unvalidated wifi.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        wifiCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         if (preferBadWifi) {
-            expectUnvalidationCheckWillNotify(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
-            mDefaultNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+            expectUnvalidationCheckWillNotify(mWiFiAgent, NotificationType.LOST_INTERNET);
+            mDefaultNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         } else {
-            expectUnvalidationCheckWillNotNotify(mWiFiNetworkAgent);
+            expectUnvalidationCheckWillNotNotify(mWiFiAgent);
             mDefaultNetworkCallback.assertNoCallback();
         }
     }
@@ -5957,25 +5984,25 @@
         mPolicyTracker.reevaluate();
 
         // Bring up validated cell.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        Network cellNetwork = mCellNetworkAgent.getNetwork();
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        Network cellNetwork = mCellAgent.getNetwork();
 
         // Bring up validated wifi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        validatedWifiCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        Network wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        validatedWifiCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        Network wifiNetwork = mWiFiAgent.getNetwork();
 
         // Fail validation on wifi.
-        mWiFiNetworkAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
+        mWiFiAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
         mCm.reportNetworkConnectivity(wifiNetwork, false);
-        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        validatedWifiCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        expectNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        validatedWifiCallback.expect(LOST, mWiFiAgent);
+        expectNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
 
         // Because avoid bad wifi is off, we don't switch to cellular.
         defaultCallback.assertNoCallback();
@@ -5989,24 +6016,24 @@
         // that we switch back to cell.
         doReturn(1).when(mResources).getInteger(R.integer.config_networkAvoidBadWifi);
         mPolicyTracker.reevaluate();
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertEquals(mCm.getActiveNetwork(), cellNetwork);
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        expectClearNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
 
         // Switch back to a restrictive carrier.
         doReturn(0).when(mResources).getInteger(R.integer.config_networkAvoidBadWifi);
         mPolicyTracker.reevaluate();
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         assertEquals(mCm.getActiveNetwork(), wifiNetwork);
         // A notification was already shown for this very network.
-        expectNoNotification(mWiFiNetworkAgent);
+        expectNoNotification(mWiFiAgent);
 
         // Simulate the user selecting "switch" on the dialog, and check that we switch to cell.
         // In principle this is a little bit unrealistic because the switch to a less restrictive
         // carrier above should have remove the notification but this doesn't matter for the
         // purposes of this test.
         mCm.setAvoidUnvalidated(wifiNetwork);
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertFalse(mCm.getNetworkCapabilities(wifiNetwork).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         assertTrue(mCm.getNetworkCapabilities(cellNetwork).hasCapability(
@@ -6014,54 +6041,54 @@
         assertEquals(mCm.getActiveNetwork(), cellNetwork);
 
         // Disconnect and reconnect wifi to clear the one-time switch above.
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        validatedWifiCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-        wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        mWiFiAgent.disconnect();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        validatedWifiCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+        wifiNetwork = mWiFiAgent.getNetwork();
 
         // Fail validation on wifi and expect the dialog to appear.
-        mWiFiNetworkAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
+        mWiFiAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
         mCm.reportNetworkConnectivity(wifiNetwork, false);
-        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        validatedWifiCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        expectNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        defaultCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        validatedWifiCallback.expect(LOST, mWiFiAgent);
+        expectNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
 
         // Simulate the user selecting "switch" and checking the don't ask again checkbox.
         Settings.Global.putInt(cr, ConnectivitySettingsManager.NETWORK_AVOID_BAD_WIFI, 1);
         mPolicyTracker.reevaluate();
 
         // We now switch to cell.
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertFalse(mCm.getNetworkCapabilities(wifiNetwork).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         assertTrue(mCm.getNetworkCapabilities(cellNetwork).hasCapability(
                 NET_CAPABILITY_VALIDATED));
         assertEquals(mCm.getActiveNetwork(), cellNetwork);
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        expectClearNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
 
         // Simulate the user turning the cellular fallback setting off and then on.
         // We switch to wifi and then to cell.
         Settings.Global.putString(cr, ConnectivitySettingsManager.NETWORK_AVOID_BAD_WIFI, null);
         mPolicyTracker.reevaluate();
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         assertEquals(mCm.getActiveNetwork(), wifiNetwork);
         // Notification is cleared again because CS doesn't particularly remember that it has
         // cleared it before, and if it hasn't cleared it before then it should do so now.
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        expectClearNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
         Settings.Global.putInt(cr, ConnectivitySettingsManager.NETWORK_AVOID_BAD_WIFI, 1);
         mPolicyTracker.reevaluate();
-        defaultCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        defaultCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertEquals(mCm.getActiveNetwork(), cellNetwork);
 
         // If cell goes down, we switch to wifi.
-        mCellNetworkAgent.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mCellAgent.disconnect();
+        defaultCallback.expect(LOST, mCellAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         validatedWifiCallback.assertNoCallback();
         // Notification is cleared yet again because the device switched to wifi.
-        expectClearNotification(mWiFiNetworkAgent, NotificationType.LOST_INTERNET);
+        expectClearNotification(mWiFiAgent, NotificationType.LOST_INTERNET);
 
         mCm.unregisterNetworkCallback(cellNetworkCallback);
         mCm.unregisterNetworkCallback(validatedWifiCallback);
@@ -6098,9 +6125,9 @@
         final TestNetworkCallback networkCallback = new TestNetworkCallback();
         mCm.requestNetwork(nr, networkCallback, TEST_REQUEST_TIMEOUT_MS);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        networkCallback.expectAvailableCallbacks(mWiFiNetworkAgent, false, false, false,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        networkCallback.expectAvailableCallbacks(mWiFiAgent, false, false, false,
                 TEST_CALLBACK_TIMEOUT_MS);
 
         // pass timeout and validate that UNAVAILABLE is not called
@@ -6118,12 +6145,12 @@
         final TestNetworkCallback networkCallback = new TestNetworkCallback();
         mCm.requestNetwork(nr, networkCallback, TEST_REQUEST_TIMEOUT_MS);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        networkCallback.expectAvailableCallbacks(mWiFiNetworkAgent, false, false, false,
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        networkCallback.expectAvailableCallbacks(mWiFiAgent, false, false, false,
                 TEST_CALLBACK_TIMEOUT_MS);
-        mWiFiNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        networkCallback.expect(LOST, mWiFiAgent);
 
         // Validate that UNAVAILABLE is not called
         networkCallback.assertNoCallback();
@@ -6143,11 +6170,11 @@
         mCm.requestNetwork(nr, networkCallback, timeoutMs);
 
         // pass timeout and validate that UNAVAILABLE is called
-        networkCallback.expect(CallbackEntry.UNAVAILABLE);
+        networkCallback.expect(UNAVAILABLE);
 
         // create a network satisfying request - validate that request not triggered
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         networkCallback.assertNoCallback();
     }
 
@@ -6169,8 +6196,8 @@
         networkCallback.assertNoCallback();
 
         // create a network satisfying request - validate that request not triggered
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         networkCallback.assertNoCallback();
     }
 
@@ -6227,7 +6254,7 @@
                 // onUnavailable!
                 testFactory.triggerUnfulfillable(newRequest);
 
-                networkCallback.expect(CallbackEntry.UNAVAILABLE);
+                networkCallback.expect(UNAVAILABLE);
 
                 // Declaring a request unfulfillable releases it automatically.
                 testFactory.expectRequestRemove();
@@ -6408,18 +6435,18 @@
 
     private Network connectKeepaliveNetwork(LinkProperties lp) throws Exception {
         // Ensure the network is disconnected before anything else occurs
-        if (mWiFiNetworkAgent != null) {
-            assertNull(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()));
+        if (mWiFiAgent != null) {
+            assertNull(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()));
         }
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
         b.expectBroadcast();
         verifyActiveNetwork(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
         waitForIdle();
-        return mWiFiNetworkAgent.getNetwork();
+        return mWiFiAgent.getNetwork();
     }
 
     @Test
@@ -6476,10 +6503,10 @@
         callback.expectError(PacketKeepalive.ERROR_HARDWARE_UNSUPPORTED);
 
         // Check that a started keepalive can be stopped.
-        mWiFiNetworkAgent.setStartKeepaliveEvent(PacketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(PacketKeepalive.SUCCESS);
         ka = mCm.startNattKeepalive(myNet, validKaInterval, callback, myIPv4, 12345, dstIPv4);
         callback.expectStarted();
-        mWiFiNetworkAgent.setStopKeepaliveEvent(PacketKeepalive.SUCCESS);
+        mWiFiAgent.setStopKeepaliveEvent(PacketKeepalive.SUCCESS);
         ka.stop();
         callback.expectStopped();
 
@@ -6489,15 +6516,15 @@
         callback.expectStarted();
         bogusLp.removeLinkAddress(new LinkAddress(myIPv4, 25));
         bogusLp.addLinkAddress(new LinkAddress(notMyIPv4, 25));
-        mWiFiNetworkAgent.sendLinkProperties(bogusLp);
+        mWiFiAgent.sendLinkProperties(bogusLp);
         callback.expectError(PacketKeepalive.ERROR_INVALID_IP_ADDRESS);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
 
         // Check that a started keepalive is stopped correctly when the network disconnects.
         ka = mCm.startNattKeepalive(myNet, validKaInterval, callback, myIPv4, 12345, dstIPv4);
         callback.expectStarted();
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent.expectDisconnected();
+        mWiFiAgent.disconnect();
+        mWiFiAgent.expectDisconnected();
         callback.expectError(PacketKeepalive.ERROR_INVALID_NETWORK);
 
         // ... and that stopping it after that has no adverse effects.
@@ -6508,15 +6535,15 @@
 
         // Reconnect.
         myNet = connectKeepaliveNetwork(lp);
-        mWiFiNetworkAgent.setStartKeepaliveEvent(PacketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(PacketKeepalive.SUCCESS);
 
         // Check that keepalive slots start from 1 and increment. The first one gets slot 1.
-        mWiFiNetworkAgent.setExpectedKeepaliveSlot(1);
+        mWiFiAgent.setExpectedKeepaliveSlot(1);
         ka = mCm.startNattKeepalive(myNet, validKaInterval, callback, myIPv4, 12345, dstIPv4);
         callback.expectStarted();
 
         // The second one gets slot 2.
-        mWiFiNetworkAgent.setExpectedKeepaliveSlot(2);
+        mWiFiAgent.setExpectedKeepaliveSlot(2);
         TestKeepaliveCallback callback2 = new TestKeepaliveCallback();
         PacketKeepalive ka2 = mCm.startNattKeepalive(
                 myNet, validKaInterval, callback2, myIPv4, 6789, dstIPv4);
@@ -6526,7 +6553,7 @@
         ka.stop();
         callback.expectStopped();
 
-        mWiFiNetworkAgent.setExpectedKeepaliveSlot(1);
+        mWiFiAgent.setExpectedKeepaliveSlot(1);
         TestKeepaliveCallback callback3 = new TestKeepaliveCallback();
         PacketKeepalive ka3 = mCm.startNattKeepalive(
                 myNet, validKaInterval, callback3, myIPv4, 9876, dstIPv4);
@@ -6628,12 +6655,12 @@
         }
 
         // Check that a started keepalive can be stopped.
-        mWiFiNetworkAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
         try (SocketKeepalive ka = mCm.createSocketKeepalive(
                 myNet, testSocket, myIPv4, dstIPv4, executor, callback)) {
             ka.start(validKaInterval);
             callback.expectStarted();
-            mWiFiNetworkAgent.setStopKeepaliveEvent(SocketKeepalive.SUCCESS);
+            mWiFiAgent.setStopKeepaliveEvent(SocketKeepalive.SUCCESS);
             ka.stop();
             callback.expectStopped();
 
@@ -6662,9 +6689,9 @@
             callback.expectStarted();
             bogusLp.removeLinkAddress(new LinkAddress(myIPv4, 25));
             bogusLp.addLinkAddress(new LinkAddress(notMyIPv4, 25));
-            mWiFiNetworkAgent.sendLinkProperties(bogusLp);
+            mWiFiAgent.sendLinkProperties(bogusLp);
             callback.expectError(SocketKeepalive.ERROR_INVALID_IP_ADDRESS);
-            mWiFiNetworkAgent.sendLinkProperties(lp);
+            mWiFiAgent.sendLinkProperties(lp);
         }
 
         // Check that a started keepalive is stopped correctly when the network disconnects.
@@ -6672,21 +6699,20 @@
                 myNet, testSocket, myIPv4, dstIPv4, executor, callback)) {
             ka.start(validKaInterval);
             callback.expectStarted();
-            mWiFiNetworkAgent.disconnect();
-            mWiFiNetworkAgent.expectDisconnected();
+            mWiFiAgent.disconnect();
+            mWiFiAgent.expectDisconnected();
             callback.expectError(SocketKeepalive.ERROR_INVALID_NETWORK);
 
             // ... and that stopping it after that has no adverse effects.
             waitForIdle();
-            final Network myNetAlias = myNet;
-            assertNull(mCm.getNetworkCapabilities(myNetAlias));
+            assertNull(mCm.getNetworkCapabilities(myNet));
             ka.stop();
             callback.assertNoCallback();
         }
 
         // Reconnect.
         myNet = connectKeepaliveNetwork(lp);
-        mWiFiNetworkAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
 
         // Check that a stop followed by network disconnects does not result in crash.
         try (SocketKeepalive ka = mCm.createSocketKeepalive(
@@ -6695,7 +6721,7 @@
             callback.expectStarted();
             // Delay the response of keepalive events in networkAgent long enough to make sure
             // the follow-up network disconnection will be processed first.
-            mWiFiNetworkAgent.setKeepaliveResponseDelay(3 * TIMEOUT_MS);
+            mWiFiAgent.setKeepaliveResponseDelay(3 * TIMEOUT_MS);
             ka.stop();
             // Call stop() twice shouldn't result in crash, b/182586681.
             ka.stop();
@@ -6705,8 +6731,8 @@
             waitForIdleSerialExecutor(executor, TIMEOUT_MS);
             waitForIdle();
 
-            mWiFiNetworkAgent.disconnect();
-            mWiFiNetworkAgent.expectDisconnected();
+            mWiFiAgent.disconnect();
+            mWiFiAgent.expectDisconnected();
             callback.expectStopped();
             callback.assertNoCallback();
         }
@@ -6714,20 +6740,18 @@
         // Reconnect.
         waitForIdle();
         myNet = connectKeepaliveNetwork(lp);
-        mWiFiNetworkAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
 
         // Check that keepalive slots start from 1 and increment. The first one gets slot 1.
-        mWiFiNetworkAgent.setExpectedKeepaliveSlot(1);
-        int srcPort2 = 0;
+        mWiFiAgent.setExpectedKeepaliveSlot(1);
         try (SocketKeepalive ka = mCm.createSocketKeepalive(
                 myNet, testSocket, myIPv4, dstIPv4, executor, callback)) {
             ka.start(validKaInterval);
             callback.expectStarted();
 
             // The second one gets slot 2.
-            mWiFiNetworkAgent.setExpectedKeepaliveSlot(2);
+            mWiFiAgent.setExpectedKeepaliveSlot(2);
             final UdpEncapsulationSocket testSocket2 = mIpSec.openUdpEncapsulationSocket();
-            srcPort2 = testSocket2.getPort();
             TestSocketKeepaliveCallback callback2 = new TestSocketKeepaliveCallback(executor);
             try (SocketKeepalive ka2 = mCm.createSocketKeepalive(
                     myNet, testSocket2, myIPv4, dstIPv4, executor, callback2)) {
@@ -6750,9 +6774,9 @@
         // assertFalse(isUdpPortInUse(srcPort));
         // assertFalse(isUdpPortInUse(srcPort2));
 
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent.expectDisconnected();
-        mWiFiNetworkAgent = null;
+        mWiFiAgent.disconnect();
+        mWiFiAgent.expectDisconnected();
+        mWiFiAgent = null;
     }
 
     @Test
@@ -6826,9 +6850,9 @@
         testSocketV4.close();
         testSocketV6.close();
 
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent.expectDisconnected();
-        mWiFiNetworkAgent = null;
+        mWiFiAgent.disconnect();
+        mWiFiAgent.expectDisconnected();
+        mWiFiAgent = null;
     }
 
     private void doTestNattSocketKeepalivesFdWithExecutor(Executor executor) throws Exception {
@@ -6843,8 +6867,8 @@
         lp.addLinkAddress(new LinkAddress(myIPv4, 25));
         lp.addRoute(new RouteInfo(InetAddress.getByName("192.0.2.254")));
         Network myNet = connectKeepaliveNetwork(lp);
-        mWiFiNetworkAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
-        mWiFiNetworkAgent.setStopKeepaliveEvent(SocketKeepalive.SUCCESS);
+        mWiFiAgent.setStartKeepaliveEvent(SocketKeepalive.SUCCESS);
+        mWiFiAgent.setStopKeepaliveEvent(SocketKeepalive.SUCCESS);
 
         TestSocketKeepaliveCallback callback = new TestSocketKeepaliveCallback(executor);
 
@@ -6879,9 +6903,9 @@
         // TODO: enable this check after ensuring a valid free port. See b/129512753#comment7.
         // assertFalse(isUdpPortInUse(srcPort));
 
-        mWiFiNetworkAgent.disconnect();
-        mWiFiNetworkAgent.expectDisconnected();
-        mWiFiNetworkAgent = null;
+        mWiFiAgent.disconnect();
+        mWiFiAgent.expectDisconnected();
+        mWiFiAgent = null;
     }
 
     private static boolean isUdpPortInUse(int port) {
@@ -6919,18 +6943,18 @@
     }
 
     private void assertPinnedToWifiWithCellDefault() {
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getBoundNetworkForProcess());
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getBoundNetworkForProcess());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
     }
 
     private void assertPinnedToWifiWithWifiDefault() {
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getBoundNetworkForProcess());
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getBoundNetworkForProcess());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
     }
 
     private void assertNotPinnedToWifi() {
         assertNull(mCm.getBoundNetworkForProcess());
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
     }
 
     @Test
@@ -6943,23 +6967,23 @@
         TestNetworkPinner.pin(mServiceContext, wifiRequest);
         assertNull(mCm.getBoundNetworkForProcess());
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
 
         // When wi-fi connects, expect to be pinned.
         assertTrue(TestNetworkPinner.awaitPin(100));
         assertPinnedToWifiWithCellDefault();
 
         // Disconnect and expect the pin to drop.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         assertTrue(TestNetworkPinner.awaitUnpin(100));
         assertNotPinnedToWifi();
 
         // Reconnecting does not cause the pin to come back.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         assertFalse(TestNetworkPinner.awaitPin(100));
         assertNotPinnedToWifi();
 
@@ -6974,21 +6998,21 @@
 
         // Disconnect cell and wifi.
         ExpectedBroadcast b = registerConnectivityBroadcast(3);  // cell down, wifi up, wifi down.
-        mCellNetworkAgent.disconnect();
-        mWiFiNetworkAgent.disconnect();
+        mCellAgent.disconnect();
+        mWiFiAgent.disconnect();
         b.expectBroadcast();
 
         // Pinning takes effect even if the pinned network is the default when the pin is set...
         TestNetworkPinner.pin(mServiceContext, wifiRequest);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
         assertTrue(TestNetworkPinner.awaitPin(100));
         assertPinnedToWifiWithWifiDefault();
 
         // ... and is maintained even when that network is no longer the default.
         b = registerConnectivityBroadcast(1);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent.connect(true);
         b.expectBroadcast();
         assertPinnedToWifiWithCellDefault();
     }
@@ -7192,7 +7216,7 @@
 
         // Disconnect wifi aware network.
         wifiAware.disconnect();
-        callback.expect(CallbackEntry.LOST, TIMEOUT_MS);
+        callback.expect(LOST, TIMEOUT_MS);
         mCm.unregisterNetworkCallback(callback);
 
         verifyNoNetwork();
@@ -7239,12 +7263,11 @@
         // ConnectivityService.
         TestNetworkAgentWrapper networkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
         networkAgent.connect(true);
-        networkCallback.expect(CallbackEntry.AVAILABLE, networkAgent);
-        networkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, networkAgent);
+        networkCallback.expect(AVAILABLE, networkAgent);
+        networkCallback.expect(NETWORK_CAPS_UPDATED, networkAgent);
         CallbackEntry.LinkPropertiesChanged cbi =
-                networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                networkAgent);
-        networkCallback.expect(CallbackEntry.BLOCKED_STATUS, networkAgent);
+                networkCallback.expect(LINK_PROPERTIES_CHANGED, networkAgent);
+        networkCallback.expect(BLOCKED_STATUS, networkAgent);
         networkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, networkAgent);
         networkCallback.assertNoCallback();
         checkDirectlyConnectedRoutes(cbi.getLp(), asList(myIpv4Address),
@@ -7259,7 +7282,7 @@
         newLp.addLinkAddress(myIpv6Address1);
         newLp.addLinkAddress(myIpv6Address2);
         networkAgent.sendLinkProperties(newLp);
-        cbi = networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, networkAgent);
+        cbi = networkCallback.expect(LINK_PROPERTIES_CHANGED, networkAgent);
         networkCallback.assertNoCallback();
         checkDirectlyConnectedRoutes(cbi.getLp(),
                 asList(myIpv4Address, myIpv6Address1, myIpv6Address2),
@@ -7320,15 +7343,15 @@
     }
 
     private List<Network> onlyCell() {
-        return List.of(mCellNetworkAgent.getNetwork());
+        return List.of(mCellAgent.getNetwork());
     }
 
     private List<Network> onlyWifi() {
-        return List.of(mWiFiNetworkAgent.getNetwork());
+        return List.of(mWiFiAgent.getNetwork());
     }
 
     private List<Network> cellAndWifi() {
-        return List.of(mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork());
+        return List.of(mCellAgent.getNetwork(), mWiFiAgent.getNetwork());
     }
 
     @Test
@@ -7338,11 +7361,11 @@
         LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
 
         // Simple connection with initial LP should have updated ifaces.
-        mCellNetworkAgent.connect(false);
+        mCellAgent.connect(false);
         waitForIdle();
         expectNotifyNetworkStatus(onlyCell(), onlyCell(), MOBILE_IFNAME);
         reset(mStatsManager);
@@ -7352,13 +7375,13 @@
         cellLp.addRoute(new RouteInfo((IpPrefix) null, InetAddress.getByName("192.0.2.4"),
                 MOBILE_IFNAME));
         cellLp.setDnsServers(List.of(InetAddress.getAllByName("8.8.8.8")));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
+        mCellAgent.sendLinkProperties(cellLp);
         verifyNoMoreInteractions(mStatsManager);
         reset(mStatsManager);
 
         // Default network switch should update ifaces.
-        mWiFiNetworkAgent.connect(false);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent.connect(false);
+        mWiFiAgent.sendLinkProperties(wifiLp);
         waitForIdle();
         assertEquals(wifiLp, mService.getActiveLinkProperties());
         expectNotifyNetworkStatus(cellAndWifi(), onlyWifi(), WIFI_IFNAME);
@@ -7370,52 +7393,52 @@
         // notifyNetworkStatus is called again, traffic on that interface will be accounted to the
         // disconnected network. This is likely a bug in ConnectivityService; it should probably
         // call notifyNetworkStatus again without the disconnected network.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         waitForIdle();
         expectNotifyNetworkStatus(cellAndWifi(), onlyWifi(), WIFI_IFNAME);
         verifyNoMoreInteractions(mStatsManager);
         reset(mStatsManager);
 
         // Connecting a network updates ifaces even if the network doesn't become default.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false);
         waitForIdle();
         expectNotifyNetworkStatus(cellAndWifi(), onlyWifi(), WIFI_IFNAME);
         reset(mStatsManager);
 
         // Disconnect should update ifaces.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         waitForIdle();
         expectNotifyNetworkStatus(onlyCell(), onlyCell(), MOBILE_IFNAME);
         reset(mStatsManager);
 
         // Metered change should update ifaces
-        mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
+        mCellAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
         waitForIdle();
         expectNotifyNetworkStatus(onlyCell(), onlyCell(), MOBILE_IFNAME);
         reset(mStatsManager);
 
-        mCellNetworkAgent.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
+        mCellAgent.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
         waitForIdle();
         expectNotifyNetworkStatus(onlyCell(), onlyCell(), MOBILE_IFNAME);
         reset(mStatsManager);
 
         // Temp metered change shouldn't update ifaces
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
+        mCellAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
         waitForIdle();
         verify(mStatsManager, never()).notifyNetworkStatus(eq(onlyCell()),
                 any(List.class), eq(MOBILE_IFNAME), any(List.class));
         reset(mStatsManager);
 
         // Congested change shouldn't update ifaces
-        mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED);
+        mCellAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED);
         waitForIdle();
         verify(mStatsManager, never()).notifyNetworkStatus(eq(onlyCell()),
                 any(List.class), eq(MOBILE_IFNAME), any(List.class));
         reset(mStatsManager);
 
         // Roaming change should update ifaces
-        mCellNetworkAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
+        mCellAgent.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
         waitForIdle();
         expectNotifyNetworkStatus(onlyCell(), onlyCell(), MOBILE_IFNAME);
         reset(mStatsManager);
@@ -7427,25 +7450,22 @@
         mMockVpn.establishForMyUid(lp);
         assertUidRangesUpdatedForMyUid(true);
 
-        final List<Network> cellAndVpn =
-                List.of(mCellNetworkAgent.getNetwork(), mMockVpn.getNetwork());
+        final List<Network> cellAndVpn = List.of(mCellAgent.getNetwork(), mMockVpn.getNetwork());
 
         // A VPN with default (null) underlying networks sets the underlying network's interfaces...
         expectNotifyNetworkStatus(cellAndVpn, cellAndVpn, MOBILE_IFNAME, Process.myUid(),
                 VPN_IFNAME, List.of(MOBILE_IFNAME));
 
         // ...and updates them as the default network switches.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        mWiFiAgent.sendLinkProperties(wifiLp);
         final Network[] onlyNull = new Network[]{null};
-        final List<Network> wifiAndVpn =
-                List.of(mWiFiNetworkAgent.getNetwork(), mMockVpn.getNetwork());
-        final List<Network> cellWifiAndVpn =
-                List.of(mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork(),
-                        mMockVpn.getNetwork());
+        final List<Network> wifiAndVpn = List.of(mWiFiAgent.getNetwork(), mMockVpn.getNetwork());
+        final List<Network> cellWifiAndVpn = List.of(mCellAgent.getNetwork(),
+                mWiFiAgent.getNetwork(), mMockVpn.getNetwork());
         final Network[] cellNullAndWifi =
-                new Network[]{mCellNetworkAgent.getNetwork(), null, mWiFiNetworkAgent.getNetwork()};
+                new Network[] { mCellAgent.getNetwork(), null, mWiFiAgent.getNetwork() };
 
         waitForIdle();
         assertEquals(wifiLp, mService.getActiveLinkProperties());
@@ -7485,9 +7505,9 @@
         // could result in incorrect data usage measurements if the interface used by the
         // disconnected network is reused by a system component that does not register an agent for
         // it (e.g., tethering).
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         waitForIdle();
-        assertNull(mService.getLinkProperties(mCellNetworkAgent.getNetwork()));
+        assertNull(mService.getLinkProperties(mCellAgent.getNetwork()));
         expectNotifyNetworkStatus(cellWifiAndVpn, wifiAndVpn, MOBILE_IFNAME, Process.myUid(),
                 VPN_IFNAME, List.of(MOBILE_IFNAME, WIFI_IFNAME));
 
@@ -7503,16 +7523,16 @@
         // ... but if something else happens that causes notifyIfacesChangedForNetworkStats to be
         // called again, it does. For example, connect Ethernet, but with a low score, such that it
         // does not become the default network.
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.setScore(
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.setScore(
                 new NetworkScore.Builder().setLegacyInt(30).setExiting(true).build());
-        mEthernetNetworkAgent.connect(false);
+        mEthernetAgent.connect(false);
         waitForIdle();
         verify(mStatsManager).notifyNetworkStatus(any(List.class),
                 any(List.class), any() /* anyString() doesn't match null */,
                 argThat(vpnInfos -> vpnInfos.get(0).getUnderlyingInterfaces().size() == 1
                         && WIFI_IFNAME.equals(vpnInfos.get(0).getUnderlyingInterfaces().get(0))));
-        mEthernetNetworkAgent.disconnect();
+        mEthernetAgent.disconnect();
         waitForIdle();
         reset(mStatsManager);
 
@@ -7552,18 +7572,18 @@
         final int[] adminUids = new int[] {Process.myUid() + 1};
         final NetworkCapabilities ncTemplate = new NetworkCapabilities();
         ncTemplate.setAdministratorUids(adminUids);
-        mCellNetworkAgent =
+        mCellAgent =
                 new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, new LinkProperties(), ncTemplate);
-        mCellNetworkAgent.connect(false /* validated */);
+        mCellAgent.connect(false /* validated */);
 
         // Verify case where caller has permission
         mServiceContext.setPermission(
                 NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, PERMISSION_GRANTED);
         TestNetworkCallback callback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(callback);
-        callback.expect(CallbackEntry.AVAILABLE, mCellNetworkAgent);
+        callback.expect(AVAILABLE, mCellAgent);
         callback.expectCapabilitiesThat(
-                mCellNetworkAgent, nc -> Arrays.equals(adminUids, nc.getAdministratorUids()));
+                mCellAgent, nc -> Arrays.equals(adminUids, nc.getAdministratorUids()));
         mCm.unregisterNetworkCallback(callback);
 
         // Verify case where caller does NOT have permission
@@ -7572,9 +7592,8 @@
         mServiceContext.setPermission(NETWORK_STACK, PERMISSION_DENIED);
         callback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(callback);
-        callback.expect(CallbackEntry.AVAILABLE, mCellNetworkAgent);
-        callback.expectCapabilitiesThat(
-                mCellNetworkAgent, nc -> nc.getAdministratorUids().length == 0);
+        callback.expect(AVAILABLE, mCellAgent);
+        callback.expectCapabilitiesThat(mCellAgent, nc -> nc.getAdministratorUids().length == 0);
     }
 
     @Test
@@ -7591,10 +7610,10 @@
         // Connect a VCN-managed wifi network.
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.removeCapability(NET_CAPABILITY_NOT_VCN_MANAGED);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.removeCapability(NET_CAPABILITY_NOT_VCN_MANAGED);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true /* validated */);
 
         final List<Network> none = List.of();
         expectNotifyNetworkStatus(onlyWifi(), none, null);  // Wifi is not the default network
@@ -7609,7 +7628,7 @@
         final LinkProperties lp = new LinkProperties();
         lp.setInterfaceName(vcnIface);
         final TestNetworkAgentWrapper vcn = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, lp, nc);
-        vcn.setUnderlyingNetworks(List.of(mWiFiNetworkAgent.getNetwork()));
+        vcn.setUnderlyingNetworks(List.of(mWiFiAgent.getNetwork()));
         vcn.connect(false /* validated */);
 
         final TestNetworkCallback callback = new TestNetworkCallback();
@@ -7622,12 +7641,12 @@
         assertFalse(nc.hasTransport(TRANSPORT_WIFI));
         assertFalse(nc.hasCapability(NET_CAPABILITY_NOT_METERED));
         final List<Network> onlyVcn = List.of(vcn.getNetwork());
-        final List<Network> vcnAndWifi = List.of(vcn.getNetwork(), mWiFiNetworkAgent.getNetwork());
+        final List<Network> vcnAndWifi = List.of(vcn.getNetwork(), mWiFiAgent.getNetwork());
         expectNotifyNetworkStatus(vcnAndWifi, onlyVcn, vcnIface, ownerUid, vcnIface,
                 List.of(WIFI_IFNAME));
 
         // Add NOT_METERED to the underlying network, check that it is not propagated.
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
         callback.assertNoCallback();
         nc = mCm.getNetworkCapabilities(vcn.getNetwork());
         assertFalse(nc.hasCapability(NET_CAPABILITY_NOT_METERED));
@@ -7635,11 +7654,11 @@
         // Switch underlying networks.
         final LinkProperties cellLp = new LinkProperties();
         cellLp.setInterfaceName(MOBILE_IFNAME);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_VCN_MANAGED);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_ROAMING);
-        mCellNetworkAgent.connect(false /* validated */);
-        vcn.setUnderlyingNetworks(List.of(mCellNetworkAgent.getNetwork()));
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_VCN_MANAGED);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_ROAMING);
+        mCellAgent.connect(false /* validated */);
+        vcn.setUnderlyingNetworks(List.of(mCellAgent.getNetwork()));
 
         // The underlying capability changes do not propagate to the virtual network, but
         // NetworkStatsService is informed of the new underlying interface.
@@ -7648,7 +7667,7 @@
         assertFalse(nc.hasTransport(TRANSPORT_WIFI));
         assertFalse(nc.hasCapability(NET_CAPABILITY_NOT_ROAMING));
         final List<Network> vcnWifiAndCell = List.of(vcn.getNetwork(),
-                mWiFiNetworkAgent.getNetwork(), mCellNetworkAgent.getNetwork());
+                mWiFiAgent.getNetwork(), mCellAgent.getNetwork());
         expectNotifyNetworkStatus(vcnWifiAndCell, onlyVcn, vcnIface, ownerUid, vcnIface,
                 List.of(MOBILE_IFNAME));
     }
@@ -7657,7 +7676,7 @@
     public void testBasicDnsConfigurationPushed() throws Exception {
         setPrivateDnsSettings(PRIVATE_DNS_MODE_OPPORTUNISTIC, "ignored.example.com");
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         waitForIdle();
         verify(mMockDnsResolver, never()).setResolverConfiguration(any());
         verifyNoMoreInteractions(mMockDnsResolver);
@@ -7673,18 +7692,17 @@
         cellLp.addLinkAddress(new LinkAddress("2001:db8:1::1/64"));
         cellLp.addRoute(new RouteInfo((IpPrefix) null, InetAddress.getByName("2001:db8:1::1"),
                 MOBILE_IFNAME));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent.sendLinkProperties(cellLp);
+        mCellAgent.connect(false);
         waitForIdle();
 
-        verify(mMockDnsResolver, times(1)).createNetworkCache(
-                eq(mCellNetworkAgent.getNetwork().netId));
+        verify(mMockDnsResolver, times(1)).createNetworkCache(eq(mCellAgent.getNetwork().netId));
         // CS tells dnsresolver about the empty DNS config for this network.
         verify(mMockDnsResolver, atLeastOnce()).setResolverConfiguration(any());
         reset(mMockDnsResolver);
 
         cellLp.addDnsServer(InetAddress.getByName("2001:db8::1"));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
+        mCellAgent.sendLinkProperties(cellLp);
         waitForIdle();
         verify(mMockDnsResolver, atLeastOnce()).setResolverConfiguration(
                 mResolverParamsParcelCaptor.capture());
@@ -7696,7 +7714,7 @@
         reset(mMockDnsResolver);
 
         cellLp.addDnsServer(InetAddress.getByName("192.0.2.1"));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
+        mCellAgent.sendLinkProperties(cellLp);
         waitForIdle();
         verify(mMockDnsResolver, atLeastOnce()).setResolverConfiguration(
                 mResolverParamsParcelCaptor.capture());
@@ -7714,7 +7732,7 @@
         final String TLS_SERVER6 = "2001:db8:53::53";
         final InetAddress[] TLS_IPS = new InetAddress[]{ InetAddress.getByName(TLS_SERVER6) };
         final String[] TLS_SERVERS = new String[]{ TLS_SERVER6 };
-        mCellNetworkAgent.mNmCallbacks.notifyPrivateDnsConfigResolved(
+        mCellAgent.mNmCallbacks.notifyPrivateDnsConfigResolved(
                 new PrivateDnsConfig(TLS_SPECIFIER, TLS_IPS).toParcel());
 
         waitForIdle();
@@ -7735,11 +7753,10 @@
         final TestNetworkCallback callback = new TestNetworkCallback();
         mCm.registerNetworkCallback(request, callback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        verify(mMockDnsResolver, times(1)).createNetworkCache(
-                eq(mWiFiNetworkAgent.getNetwork().netId));
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        verify(mMockDnsResolver, times(1)).createNetworkCache(eq(mWiFiAgent.getNetwork().netId));
         verify(mMockDnsResolver, times(2)).setResolverConfiguration(
                 mResolverParamsParcelCaptor.capture());
         final ResolverParamsParcel resolverParams = mResolverParamsParcelCaptor.getValue();
@@ -7755,31 +7772,31 @@
         TestNetworkCallback callback = new TestNetworkCallback();
         mCm.registerNetworkCallback(request, callback);
         // Bring up wifi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         // Private DNS resolution failed, checking if the notification will be shown or not.
-        mWiFiNetworkAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
-        mWiFiNetworkAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
+        mWiFiAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
+        mWiFiAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
         waitForIdle();
         // If network validation failed, NetworkMonitor will re-evaluate the network.
         // ConnectivityService should filter the redundant notification. This part is trying to
         // simulate that situation and check if ConnectivityService could filter that case.
-        mWiFiNetworkAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
+        mWiFiAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
         waitForIdle();
         verify(mNotificationManager, timeout(TIMEOUT_MS).times(1)).notify(anyString(),
                 eq(NotificationType.PRIVATE_DNS_BROKEN.eventId), any());
         // If private DNS resolution successful, the PRIVATE_DNS_BROKEN notification shouldn't be
         // shown.
-        mWiFiNetworkAgent.setNetworkValid(true /* privateDnsProbeSent */);
-        mWiFiNetworkAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
+        mWiFiAgent.setNetworkValid(true /* privateDnsProbeSent */);
+        mWiFiAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
         waitForIdle();
         verify(mNotificationManager, timeout(TIMEOUT_MS).times(1)).cancel(anyString(),
                 eq(NotificationType.PRIVATE_DNS_BROKEN.eventId));
         // If private DNS resolution failed again, the PRIVATE_DNS_BROKEN notification should be
         // shown again.
-        mWiFiNetworkAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
-        mWiFiNetworkAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
+        mWiFiAgent.setNetworkInvalid(true /* invalidBecauseOfPrivateDns */);
+        mWiFiAgent.mNetworkMonitor.forceReevaluation(Process.myUid());
         waitForIdle();
         verify(mNotificationManager, timeout(TIMEOUT_MS).times(2)).notify(anyString(),
                 eq(NotificationType.PRIVATE_DNS_BROKEN.eventId), any());
@@ -7795,7 +7812,7 @@
                 .addTransportType(TRANSPORT_CELLULAR).build();
         mCm.requestNetwork(cellRequest, cellNetworkCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         waitForIdle();
         // CS tells netd about the empty DNS config for this network.
         verify(mMockDnsResolver, never()).setResolverConfiguration(any());
@@ -7815,11 +7832,10 @@
         cellLp.addDnsServer(InetAddress.getByName("2001:db8::1"));
         cellLp.addDnsServer(InetAddress.getByName("192.0.2.1"));
 
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent.sendLinkProperties(cellLp);
+        mCellAgent.connect(false);
         waitForIdle();
-        verify(mMockDnsResolver, times(1)).createNetworkCache(
-                eq(mCellNetworkAgent.getNetwork().netId));
+        verify(mMockDnsResolver, times(1)).createNetworkCache(eq(mCellAgent.getNetwork().netId));
         verify(mMockDnsResolver, atLeastOnce()).setResolverConfiguration(
                 mResolverParamsParcelCaptor.capture());
         ResolverParamsParcel resolvrParams = mResolverParamsParcelCaptor.getValue();
@@ -7831,12 +7847,11 @@
         assertTrue(new ArraySet<>(resolvrParams.tlsServers).containsAll(
                 asList("2001:db8::1", "192.0.2.1")));
         reset(mMockDnsResolver);
-        cellNetworkCallback.expect(CallbackEntry.AVAILABLE, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                mCellNetworkAgent);
+        cellNetworkCallback.expect(AVAILABLE, mCellAgent);
+        cellNetworkCallback.expect(NETWORK_CAPS_UPDATED, mCellAgent);
         CallbackEntry.LinkPropertiesChanged cbi = cellNetworkCallback.expect(
-                CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.BLOCKED_STATUS, mCellNetworkAgent);
+                LINK_PROPERTIES_CHANGED, mCellAgent);
+        cellNetworkCallback.expect(BLOCKED_STATUS, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertFalse(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -7867,8 +7882,7 @@
         setPrivateDnsSettings(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME, "strict.example.com");
         // Can't test dns configuration for strict mode without properly mocking
         // out the DNS lookups, but can test that LinkProperties is updated.
-        cbi = cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        cbi = cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertTrue(cbi.getLp().isPrivateDnsActive());
         assertEquals("strict.example.com", cbi.getLp().getPrivateDnsServerName());
@@ -7894,18 +7908,17 @@
                 .addTransportType(TRANSPORT_CELLULAR).build();
         mCm.requestNetwork(cellRequest, cellNetworkCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         waitForIdle();
         LinkProperties lp = new LinkProperties();
-        mCellNetworkAgent.sendLinkProperties(lp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent.sendLinkProperties(lp);
+        mCellAgent.connect(false);
         waitForIdle();
-        cellNetworkCallback.expect(CallbackEntry.AVAILABLE, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                mCellNetworkAgent);
+        cellNetworkCallback.expect(AVAILABLE, mCellAgent);
+        cellNetworkCallback.expect(NETWORK_CAPS_UPDATED, mCellAgent);
         CallbackEntry.LinkPropertiesChanged cbi = cellNetworkCallback.expect(
-                CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        cellNetworkCallback.expect(CallbackEntry.BLOCKED_STATUS, mCellNetworkAgent);
+                LINK_PROPERTIES_CHANGED, mCellAgent);
+        cellNetworkCallback.expect(BLOCKED_STATUS, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertFalse(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -7915,16 +7928,15 @@
         // Send a validation event for a server that is not part of the current
         // resolver config. The validation event should be ignored.
         mService.mResolverUnsolEventCallback.onPrivateDnsValidationEvent(
-                makePrivateDnsValidationEvent(mCellNetworkAgent.getNetwork().netId, "",
+                makePrivateDnsValidationEvent(mCellAgent.getNetwork().netId, "",
                         "145.100.185.18", VALIDATION_RESULT_SUCCESS));
         cellNetworkCallback.assertNoCallback();
 
         // Add a dns server to the LinkProperties.
         LinkProperties lp2 = new LinkProperties(lp);
         lp2.addDnsServer(InetAddress.getByName("145.100.185.16"));
-        mCellNetworkAgent.sendLinkProperties(lp2);
-        cbi = cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(lp2);
+        cbi = cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertFalse(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -7934,13 +7946,13 @@
         // Send a validation event containing a hostname that is not part of
         // the current resolver config. The validation event should be ignored.
         mService.mResolverUnsolEventCallback.onPrivateDnsValidationEvent(
-                makePrivateDnsValidationEvent(mCellNetworkAgent.getNetwork().netId,
+                makePrivateDnsValidationEvent(mCellAgent.getNetwork().netId,
                         "145.100.185.16", "hostname", VALIDATION_RESULT_SUCCESS));
         cellNetworkCallback.assertNoCallback();
 
         // Send a validation event where validation failed.
         mService.mResolverUnsolEventCallback.onPrivateDnsValidationEvent(
-                makePrivateDnsValidationEvent(mCellNetworkAgent.getNetwork().netId,
+                makePrivateDnsValidationEvent(mCellAgent.getNetwork().netId,
                         "145.100.185.16", "", VALIDATION_RESULT_FAILURE));
         cellNetworkCallback.assertNoCallback();
 
@@ -7948,10 +7960,9 @@
         // the current resolver config. A LinkProperties callback with updated
         // private dns fields should be sent.
         mService.mResolverUnsolEventCallback.onPrivateDnsValidationEvent(
-                makePrivateDnsValidationEvent(mCellNetworkAgent.getNetwork().netId,
+                makePrivateDnsValidationEvent(mCellAgent.getNetwork().netId,
                         "145.100.185.16", "", VALIDATION_RESULT_SUCCESS));
-        cbi = cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        cbi = cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertTrue(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -7961,9 +7972,8 @@
         // the network agent sends unrelated changes.
         LinkProperties lp3 = new LinkProperties(lp2);
         lp3.setMtu(1300);
-        mCellNetworkAgent.sendLinkProperties(lp3);
-        cbi = cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(lp3);
+        cbi = cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertTrue(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -7974,9 +7984,8 @@
         // fields in LinkProperties.
         LinkProperties lp4 = new LinkProperties(lp3);
         lp4.removeDnsServer(InetAddress.getByName("145.100.185.16"));
-        mCellNetworkAgent.sendLinkProperties(lp4);
-        cbi = cellNetworkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(lp4);
+        cbi = cellNetworkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         cellNetworkCallback.assertNoCallback();
         assertFalse(cbi.getLp().isPrivateDnsActive());
         assertNull(cbi.getLp().getPrivateDnsServerName());
@@ -8011,10 +8020,10 @@
 
     @Test
     public void testApplyUnderlyingCapabilities() throws Exception {
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mCellNetworkAgent.connect(false /* validated */);
-        mWiFiNetworkAgent.connect(false /* validated */);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mCellAgent.connect(false /* validated */);
+        mWiFiAgent.connect(false /* validated */);
 
         final NetworkCapabilities cellNc = new NetworkCapabilities()
                 .addTransportType(TRANSPORT_CELLULAR)
@@ -8031,12 +8040,12 @@
                 .addCapability(NET_CAPABILITY_NOT_SUSPENDED)
                 .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
                 .setLinkUpstreamBandwidthKbps(20);
-        mCellNetworkAgent.setNetworkCapabilities(cellNc, true /* sendToConnectivityService */);
-        mWiFiNetworkAgent.setNetworkCapabilities(wifiNc, true /* sendToConnectivityService */);
+        mCellAgent.setNetworkCapabilities(cellNc, true /* sendToConnectivityService */);
+        mWiFiAgent.setNetworkCapabilities(wifiNc, true /* sendToConnectivityService */);
         waitForIdle();
 
-        final Network mobile = mCellNetworkAgent.getNetwork();
-        final Network wifi = mWiFiNetworkAgent.getNetwork();
+        final Network mobile = mCellAgent.getNetwork();
+        final Network wifi = mWiFiAgent.getNetwork();
 
         final NetworkCapabilities initialCaps = new NetworkCapabilities();
         initialCaps.addTransportType(TRANSPORT_VPN);
@@ -8167,8 +8176,7 @@
             mMockVpn.setUnderlyingNetworks(new Network[]{wifiNetwork});
             // onCapabilitiesChanged() should be called because
             // NetworkCapabilities#mUnderlyingNetworks is updated.
-            CallbackEntry ce = callback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                    mMockVpn);
+            CallbackEntry ce = callback.expect(NETWORK_CAPS_UPDATED, mMockVpn);
             final NetworkCapabilities vpnNc1 = ((CallbackEntry.CapabilitiesChanged) ce).getCaps();
             // Since the wifi network hasn't brought up,
             // ConnectivityService#applyUnderlyingCapabilities cannot find it. Update
@@ -8191,9 +8199,9 @@
 
             // Make that underlying network connect, and expect to see its capabilities immediately
             // reflected in the VPN's capabilities.
-            mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-            assertEquals(wifiNetwork, mWiFiNetworkAgent.getNetwork());
-            mWiFiNetworkAgent.connect(false);
+            mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+            assertEquals(wifiNetwork, mWiFiAgent.getNetwork());
+            mWiFiAgent.connect(false);
             // TODO: the callback for the VPN happens before any callbacks are called for the wifi
             // network that has just connected. There appear to be two issues here:
             // 1. The VPN code will accept an underlying network as soon as getNetworkCapabilities()
@@ -8204,21 +8212,21 @@
             // 2. When a network connects, updateNetworkInfo propagates underlying network
             //    capabilities before rematching networks.
             // Given that this scenario can't really happen, this is probably fine for now.
-            ce = callback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, mMockVpn);
+            ce = callback.expect(NETWORK_CAPS_UPDATED, mMockVpn);
             final NetworkCapabilities vpnNc2 = ((CallbackEntry.CapabilitiesChanged) ce).getCaps();
             // The wifi network is brought up, NetworkCapabilities#mUnderlyingNetworks is updated to
             // it.
             underlyingNetwork.add(wifiNetwork);
             assertEquals(underlyingNetwork, vpnNc2.getUnderlyingNetworks());
-            callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+            callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
             assertTrue(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
                     .hasTransport(TRANSPORT_VPN));
             assertTrue(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
                     .hasTransport(TRANSPORT_WIFI));
 
             // Disconnect the network, and expect to see the VPN capabilities change accordingly.
-            mWiFiNetworkAgent.disconnect();
-            callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+            mWiFiAgent.disconnect();
+            callback.expect(LOST, mWiFiAgent);
             callback.expectCapabilitiesThat(mMockVpn, (nc) ->
                     nc.getTransportTypes().length == 1 && nc.hasTransport(TRANSPORT_VPN));
 
@@ -8244,8 +8252,8 @@
         callback.expectAvailableCallbacksUnvalidated(mMockVpn);
 
         // Connect cellular data.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false /* validated */);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false /* validated */);
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_CELLULAR));
@@ -8260,11 +8268,11 @@
         assertGetNetworkInfoOfGetActiveNetworkIsConnected(true);
 
         // Suspend the cellular network and expect the VPN to be suspended.
-        mCellNetworkAgent.suspend();
+        mCellAgent.suspend();
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> !nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_CELLULAR));
-        callback.expect(CallbackEntry.SUSPENDED, mMockVpn);
+        callback.expect(SUSPENDED, mMockVpn);
         callback.assertNoCallback();
 
         assertFalse(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
@@ -8277,12 +8285,12 @@
         assertGetNetworkInfoOfGetActiveNetworkIsConnected(false);
 
         // Switch to another network. The VPN should no longer be suspended.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false /* validated */);
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_WIFI));
-        callback.expect(CallbackEntry.RESUMED, mMockVpn);
+        callback.expect(RESUMED, mMockVpn);
         callback.assertNoCallback();
 
         assertTrue(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
@@ -8294,9 +8302,9 @@
         assertGetNetworkInfoOfGetActiveNetworkIsConnected(true);
 
         // Unsuspend cellular and then switch back to it. The VPN remains not suspended.
-        mCellNetworkAgent.resume();
+        mCellAgent.resume();
         callback.assertNoCallback();
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_CELLULAR));
@@ -8315,11 +8323,11 @@
         assertGetNetworkInfoOfGetActiveNetworkIsConnected(true);
 
         // Suspend cellular and expect no connectivity.
-        mCellNetworkAgent.suspend();
+        mCellAgent.suspend();
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> !nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_CELLULAR));
-        callback.expect(CallbackEntry.SUSPENDED, mMockVpn);
+        callback.expect(SUSPENDED, mMockVpn);
         callback.assertNoCallback();
 
         assertFalse(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
@@ -8331,11 +8339,11 @@
         assertGetNetworkInfoOfGetActiveNetworkIsConnected(false);
 
         // Resume cellular and expect that connectivity comes back.
-        mCellNetworkAgent.resume();
+        mCellAgent.resume();
         callback.expectCapabilitiesThat(mMockVpn,
                 nc -> nc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED)
                         && nc.hasTransport(TRANSPORT_CELLULAR));
-        callback.expect(CallbackEntry.RESUMED, mMockVpn);
+        callback.expect(RESUMED, mMockVpn);
         callback.assertNoCallback();
 
         assertTrue(mCm.getNetworkCapabilities(mMockVpn.getNetwork())
@@ -8374,14 +8382,14 @@
                 new Handler(ConnectivityThread.getInstanceLooper()));
         defaultCallback.assertNoCallback();
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false);
 
-        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        genericNotVpnNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        systemDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        genericNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        genericNotVpnNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        systemDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         vpnNetworkCallback.assertNoCallback();
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
@@ -8407,16 +8415,15 @@
         defaultCallback.expectAvailableThenValidatedCallbacks(mMockVpn);
         systemDefaultCallback.assertNoCallback();
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
-        assertEquals(mWiFiNetworkAgent.getNetwork(),
-                systemDefaultCallback.getLastAvailableNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), systemDefaultCallback.getLastAvailableNetwork());
 
         ranges.clear();
         mMockVpn.setUids(ranges);
 
-        genericNetworkCallback.expect(CallbackEntry.LOST, mMockVpn);
+        genericNetworkCallback.expect(LOST, mMockVpn);
         genericNotVpnNetworkCallback.assertNoCallback();
         wifiNetworkCallback.assertNoCallback();
-        vpnNetworkCallback.expect(CallbackEntry.LOST, mMockVpn);
+        vpnNetworkCallback.expect(LOST, mMockVpn);
 
         // TODO : The default network callback should actually get a LOST call here (also see the
         // comment below for AVAILABLE). This is because ConnectivityService does not look at UID
@@ -8424,7 +8431,7 @@
         // can't currently update their UIDs without disconnecting, so this does not matter too
         // much, but that is the reason the test here has to check for an update to the
         // capabilities instead of the expected LOST then AVAILABLE.
-        defaultCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, mMockVpn);
+        defaultCallback.expect(NETWORK_CAPS_UPDATED, mMockVpn);
         systemDefaultCallback.assertNoCallback();
 
         ranges.add(new UidRange(uid, uid));
@@ -8436,25 +8443,25 @@
         vpnNetworkCallback.expectAvailableCallbacksValidated(mMockVpn);
         // TODO : Here like above, AVAILABLE would be correct, but because this can't actually
         // happen outside of the test, ConnectivityService does not rematch callbacks.
-        defaultCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED, mMockVpn);
+        defaultCallback.expect(NETWORK_CAPS_UPDATED, mMockVpn);
         systemDefaultCallback.assertNoCallback();
 
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
 
-        genericNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        genericNotVpnNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        wifiNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        genericNetworkCallback.expect(LOST, mWiFiAgent);
+        genericNotVpnNetworkCallback.expect(LOST, mWiFiAgent);
+        wifiNetworkCallback.expect(LOST, mWiFiAgent);
         vpnNetworkCallback.assertNoCallback();
         defaultCallback.assertNoCallback();
-        systemDefaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        systemDefaultCallback.expect(LOST, mWiFiAgent);
 
         mMockVpn.disconnect();
 
-        genericNetworkCallback.expect(CallbackEntry.LOST, mMockVpn);
+        genericNetworkCallback.expect(LOST, mMockVpn);
         genericNotVpnNetworkCallback.assertNoCallback();
         wifiNetworkCallback.assertNoCallback();
-        vpnNetworkCallback.expect(CallbackEntry.LOST, mMockVpn);
-        defaultCallback.expect(CallbackEntry.LOST, mMockVpn);
+        vpnNetworkCallback.expect(LOST, mMockVpn);
+        defaultCallback.expect(LOST, mMockVpn);
         systemDefaultCallback.assertNoCallback();
         assertEquals(null, mCm.getActiveNetwork());
 
@@ -8472,10 +8479,10 @@
         final TestNetworkCallback defaultCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(defaultCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
 
-        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         mMockVpn.establishForMyUid(true /* validated */, false /* hasInternet */,
@@ -8498,10 +8505,10 @@
         final TestNetworkCallback defaultCallback = new TestNetworkCallback();
         mCm.registerDefaultNetworkCallback(defaultCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
 
-        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         mMockVpn.establishForMyUid(true /* validated */, true /* hasInternet */,
@@ -8512,8 +8519,8 @@
         assertEquals(defaultCallback.getLastAvailableNetwork(), mCm.getActiveNetwork());
 
         mMockVpn.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mMockVpn);
-        defaultCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+        defaultCallback.expect(LOST, mMockVpn);
+        defaultCallback.expectAvailableCallbacksValidated(mWiFiAgent);
 
         mCm.unregisterNetworkCallback(defaultCallback);
     }
@@ -8524,9 +8531,9 @@
         mCm.registerDefaultNetworkCallback(callback);
 
         // Bring up Ethernet.
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mEthernetNetworkAgent);
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mEthernetAgent);
         callback.assertNoCallback();
 
         // Bring up a VPN that has the INTERNET capability, initially unvalidated.
@@ -8561,8 +8568,8 @@
         callback.assertNoCallback();
 
         mMockVpn.disconnect();
-        callback.expect(CallbackEntry.LOST, mMockVpn);
-        callback.expectAvailableCallbacksValidated(mEthernetNetworkAgent);
+        callback.expect(LOST, mMockVpn);
+        callback.expectAvailableCallbacksValidated(mEthernetAgent);
     }
 
     @Test
@@ -8579,9 +8586,9 @@
 
         // Connect cell. It will become the default network, and in the absence of setting
         // underlying networks explicitly it will become the sole underlying network for the vpn.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mCellAgent.connect(true);
 
         mMockVpn.establishForMyUid(true /* validated */, false /* hasInternet */,
                 false /* privateDnsProbeSent */);
@@ -8646,38 +8653,36 @@
         assertDefaultNetworkCapabilities(userId /* no networks */);
 
         // Connect cell and use it as an underlying network.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mCellAgent.connect(true);
 
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mCellAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && !caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mCellAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mWiFiAgent.connect(true);
 
         mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork() });
+                new Network[] { mCellAgent.getNetwork(), mWiFiAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent, mWiFiNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mCellAgent, mWiFiAgent);
 
         // Don't disconnect, but note the VPN is not using wifi any more.
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mCellAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
@@ -8686,86 +8691,84 @@
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
         // The return value of getDefaultNetworkCapabilitiesForUser always includes the default
         // network (wifi) as well as the underlying networks (cell).
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent, mWiFiNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mCellAgent, mWiFiAgent);
 
         // Remove NOT_SUSPENDED from the only network and observe VPN is now suspended.
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_SUSPENDED);
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && !caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        vpnNetworkCallback.expect(CallbackEntry.SUSPENDED, mMockVpn);
+        vpnNetworkCallback.expect(SUSPENDED, mMockVpn);
 
         // Add NOT_SUSPENDED again and observe VPN is no longer suspended.
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_SUSPENDED);
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && !caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        vpnNetworkCallback.expect(CallbackEntry.RESUMED, mMockVpn);
+        vpnNetworkCallback.expect(RESUMED, mMockVpn);
 
         // Use Wifi but not cell. Note the VPN is now unmetered and not suspended.
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mWiFiNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mWiFiAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && !caps.hasTransport(TRANSPORT_CELLULAR) && caps.hasTransport(TRANSPORT_WIFI)
                 && caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        assertDefaultNetworkCapabilities(userId, mWiFiNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mWiFiAgent);
 
         // Use both again.
         mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork() });
+                new Network[] { mCellAgent.getNetwork(), mWiFiAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent, mWiFiNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mCellAgent, mWiFiAgent);
 
         // Cell is suspended again. As WiFi is not, this should not cause a callback.
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_SUSPENDED);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_SUSPENDED);
         vpnNetworkCallback.assertNoCallback();
 
         // Stop using WiFi. The VPN is suspended again.
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mCellAgent.getNetwork() });
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        vpnNetworkCallback.expect(CallbackEntry.SUSPENDED, mMockVpn);
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent, mWiFiNetworkAgent);
+        vpnNetworkCallback.expect(SUSPENDED, mMockVpn);
+        assertDefaultNetworkCapabilities(userId, mCellAgent, mWiFiAgent);
 
         // Use both again.
         mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork() });
+                new Network[] { mCellAgent.getNetwork(), mWiFiAgent.getNetwork() });
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_CELLULAR) && caps.hasTransport(TRANSPORT_WIFI)
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED)
                 && caps.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
-        vpnNetworkCallback.expect(CallbackEntry.RESUMED, mMockVpn);
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent, mWiFiNetworkAgent);
+        vpnNetworkCallback.expect(RESUMED, mMockVpn);
+        assertDefaultNetworkCapabilities(userId, mCellAgent, mWiFiAgent);
 
         // Disconnect cell. Receive update without even removing the dead network from the
         // underlying networks – it's dead anyway. Not metered any more.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && !caps.hasTransport(TRANSPORT_CELLULAR) && caps.hasTransport(TRANSPORT_WIFI)
                 && caps.hasCapability(NET_CAPABILITY_NOT_METERED));
-        assertDefaultNetworkCapabilities(userId, mWiFiNetworkAgent);
+        assertDefaultNetworkCapabilities(userId, mWiFiAgent);
 
         // Disconnect wifi too. No underlying networks means this is now metered.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
                 && !caps.hasTransport(TRANSPORT_CELLULAR) && !caps.hasTransport(TRANSPORT_WIFI)
@@ -8807,8 +8810,8 @@
         assertVpnTransportInfo(nc, VpnManager.TYPE_VPN_SERVICE);
 
         // Connect to Cell; Cell is the default network.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
@@ -8816,9 +8819,9 @@
                 && !caps.hasCapability(NET_CAPABILITY_NOT_METERED));
 
         // Connect to WiFi; WiFi is the new default.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
@@ -8827,10 +8830,10 @@
 
         // Disconnect Cell. The default network did not change, so there shouldn't be any changes in
         // the capabilities.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
 
         // Disconnect wifi too. Now we have no default network.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
 
         vpnNetworkCallback.expectCapabilitiesThat(mMockVpn,
                 (caps) -> caps.hasTransport(TRANSPORT_VPN)
@@ -8864,13 +8867,13 @@
         assertVpnTransportInfo(nc, VpnManager.TYPE_VPN_SERVICE);
 
         // Set an underlying network and expect to see the VPN transports change.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         callback.expectCapabilitiesThat(mMockVpn, (caps)
                 -> caps.hasTransport(TRANSPORT_VPN)
                 && caps.hasTransport(TRANSPORT_WIFI));
-        callback.expectCapabilitiesThat(mWiFiNetworkAgent, (caps)
+        callback.expectCapabilitiesThat(mWiFiAgent, (caps)
                 -> caps.hasCapability(NET_CAPABILITY_VALIDATED));
 
         doReturn(UserHandle.getUid(RESTRICTED_USER, VPN_UID)).when(mPackageManager)
@@ -8892,8 +8895,8 @@
                 && caps.hasTransport(TRANSPORT_WIFI));
 
         // Change the VPN's capabilities somehow (specifically, disconnect wifi).
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
         callback.expectCapabilitiesThat(mMockVpn, (caps)
                 -> caps.getUids().size() == 2
                 && caps.getUids().contains(singleUidRange)
@@ -8933,8 +8936,8 @@
         final int uid = Process.myUid();
 
         // Connect wifi and check that UIDs in the main and restricted profiles have network access.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true /* validated */);
         final int restrictedUid = UserHandle.getUid(RESTRICTED_USER, 42 /* appId */);
         assertNotNull(mCm.getActiveNetworkForUid(uid));
         assertNotNull(mCm.getActiveNetworkForUid(restrictedUid));
@@ -8983,9 +8986,9 @@
     public void testIsActiveNetworkMeteredOverWifi() throws Exception {
         // Returns true by default when no network is available.
         assertTrue(mCm.isActiveNetworkMetered());
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
         waitForIdle();
 
         assertFalse(mCm.isActiveNetworkMetered());
@@ -8995,9 +8998,9 @@
     public void testIsActiveNetworkMeteredOverCell() throws Exception {
         // Returns true by default when no network is available.
         assertTrue(mCm.isActiveNetworkMetered());
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+        mCellAgent.connect(true);
         waitForIdle();
 
         assertTrue(mCm.isActiveNetworkMetered());
@@ -9007,9 +9010,9 @@
     public void testIsActiveNetworkMeteredOverVpnTrackingPlatformDefault() throws Exception {
         // Returns true by default when no network is available.
         assertTrue(mCm.isActiveNetworkMetered());
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+        mCellAgent.connect(true);
         waitForIdle();
         assertTrue(mCm.isActiveNetworkMetered());
 
@@ -9024,9 +9027,9 @@
         assertTrue(mCm.isActiveNetworkMetered());
 
         // Connect WiFi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
         waitForIdle();
         // VPN should still be the active network.
         assertEquals(mMockVpn.getNetwork(), mCm.getActiveNetwork());
@@ -9035,13 +9038,13 @@
         assertFalse(mCm.isActiveNetworkMetered());
 
         // Disconnecting Cell should not affect VPN's meteredness.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         waitForIdle();
 
         assertFalse(mCm.isActiveNetworkMetered());
 
         // Disconnect WiFi; Now there is no platform default network.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         waitForIdle();
 
         // VPN without any underlying networks is treated as metered.
@@ -9054,15 +9057,15 @@
     public void testIsActiveNetworkMeteredOverVpnSpecifyingUnderlyingNetworks() throws Exception {
         // Returns true by default when no network is available.
         assertTrue(mCm.isActiveNetworkMetered());
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+        mCellAgent.connect(true);
         waitForIdle();
         assertTrue(mCm.isActiveNetworkMetered());
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
         waitForIdle();
         assertFalse(mCm.isActiveNetworkMetered());
 
@@ -9073,16 +9076,14 @@
         // Ensure VPN is now the active network.
         assertEquals(mMockVpn.getNetwork(), mCm.getActiveNetwork());
         // VPN is using Cell
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mCellAgent.getNetwork() });
         waitForIdle();
 
         // Expect VPN to be metered.
         assertTrue(mCm.isActiveNetworkMetered());
 
         // VPN is now using WiFi
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mWiFiNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mWiFiAgent.getNetwork() });
         waitForIdle();
 
         // Expect VPN to be unmetered
@@ -9090,7 +9091,7 @@
 
         // VPN is using Cell | WiFi.
         mMockVpn.setUnderlyingNetworks(
-                new Network[] { mCellNetworkAgent.getNetwork(), mWiFiNetworkAgent.getNetwork() });
+                new Network[] { mCellAgent.getNetwork(), mWiFiAgent.getNetwork() });
         waitForIdle();
 
         // Expect VPN to be metered.
@@ -9098,7 +9099,7 @@
 
         // VPN is using WiFi | Cell.
         mMockVpn.setUnderlyingNetworks(
-                new Network[] { mWiFiNetworkAgent.getNetwork(), mCellNetworkAgent.getNetwork() });
+                new Network[] { mWiFiAgent.getNetwork(), mCellAgent.getNetwork() });
         waitForIdle();
 
         // Order should not matter and VPN should still be metered.
@@ -9118,9 +9119,9 @@
     public void testIsActiveNetworkMeteredOverAlwaysMeteredVpn() throws Exception {
         // Returns true by default when no network is available.
         assertTrue(mCm.isActiveNetworkMetered());
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
         waitForIdle();
         assertFalse(mCm.isActiveNetworkMetered());
 
@@ -9140,8 +9141,7 @@
 
 
         // VPN explicitly declares WiFi as its underlying network.
-        mMockVpn.setUnderlyingNetworks(
-                new Network[] { mWiFiNetworkAgent.getNetwork() });
+        mMockVpn.setUnderlyingNetworks(new Network[] { mWiFiAgent.getNetwork() });
         waitForIdle();
 
         // Doesn't really matter whether VPN declares its underlying networks explicitly.
@@ -9149,7 +9149,7 @@
 
         // With WiFi lost, VPN is basically without any underlying networks. And in that case it is
         // anyways suppose to be metered.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         waitForIdle();
 
         assertTrue(mCm.isActiveNetworkMetered());
@@ -9183,80 +9183,74 @@
 
         mockUidNetworkingBlocked();
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        detailedCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent,
-                BLOCKED_REASON_NONE);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        detailedCallback.expectAvailableThenValidatedCallbacks(mCellAgent, BLOCKED_REASON_NONE);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
         setBlockedReasonChanged(BLOCKED_REASON_BATTERY_SAVER);
-        cellNetworkCallback.expectBlockedStatusCallback(true, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent,
-                BLOCKED_REASON_BATTERY_SAVER);
+        cellNetworkCallback.expectBlockedStatusCallback(true, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_REASON_BATTERY_SAVER);
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mCellNetworkAgent);
+        assertExtraInfoFromCmBlocked(mCellAgent);
 
         // If blocked state does not change but blocked reason does, the boolean callback is called.
         // TODO: investigate de-duplicating.
         setBlockedReasonChanged(BLOCKED_METERED_REASON_USER_RESTRICTED);
-        cellNetworkCallback.expectBlockedStatusCallback(true, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent,
+        cellNetworkCallback.expectBlockedStatusCallback(true, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent,
                 BLOCKED_METERED_REASON_USER_RESTRICTED);
 
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
-        cellNetworkCallback.expectBlockedStatusCallback(false, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent, BLOCKED_REASON_NONE);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        cellNetworkCallback.expectBlockedStatusCallback(false, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_REASON_NONE);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
         setBlockedReasonChanged(BLOCKED_METERED_REASON_DATA_SAVER);
-        cellNetworkCallback.expectBlockedStatusCallback(true, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent,
-                BLOCKED_METERED_REASON_DATA_SAVER);
+        cellNetworkCallback.expectBlockedStatusCallback(true, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_METERED_REASON_DATA_SAVER);
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mCellNetworkAgent);
+        assertExtraInfoFromCmBlocked(mCellAgent);
 
         // Restrict the network based on UID rule and NOT_METERED capability change.
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellNetworkAgent);
-        cellNetworkCallback.expectBlockedStatusCallback(false, mCellNetworkAgent);
-        detailedCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent, BLOCKED_REASON_NONE);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        cellNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellAgent);
+        cellNetworkCallback.expectBlockedStatusCallback(false, mCellAgent);
+        detailedCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_REASON_NONE);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
-        cellNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED,
-                mCellNetworkAgent);
-        cellNetworkCallback.expectBlockedStatusCallback(true, mCellNetworkAgent);
-        detailedCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED,
-                mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent,
-                BLOCKED_METERED_REASON_DATA_SAVER);
+        mCellAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+        cellNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED, mCellAgent);
+        cellNetworkCallback.expectBlockedStatusCallback(true, mCellAgent);
+        detailedCallback.expectCapabilitiesWithout(NET_CAPABILITY_NOT_METERED, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_METERED_REASON_DATA_SAVER);
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mCellNetworkAgent);
+        assertExtraInfoFromCmBlocked(mCellAgent);
 
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
-        cellNetworkCallback.expectBlockedStatusCallback(false, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent, BLOCKED_REASON_NONE);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        cellNetworkCallback.expectBlockedStatusCallback(false, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_REASON_NONE);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
         cellNetworkCallback.assertNoCallback();
@@ -9264,30 +9258,29 @@
 
         // Restrict background data. Networking is not blocked because the network is unmetered.
         setBlockedReasonChanged(BLOCKED_METERED_REASON_DATA_SAVER);
-        cellNetworkCallback.expectBlockedStatusCallback(true, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent,
-                BLOCKED_METERED_REASON_DATA_SAVER);
+        cellNetworkCallback.expectBlockedStatusCallback(true, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_METERED_REASON_DATA_SAVER);
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mCellNetworkAgent);
+        assertExtraInfoFromCmBlocked(mCellAgent);
         setBlockedReasonChanged(BLOCKED_METERED_REASON_DATA_SAVER);
         cellNetworkCallback.assertNoCallback();
 
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
-        cellNetworkCallback.expectBlockedStatusCallback(false, mCellNetworkAgent);
-        detailedCallback.expectBlockedStatusCallback(mCellNetworkAgent, BLOCKED_REASON_NONE);
+        cellNetworkCallback.expectBlockedStatusCallback(false, mCellAgent);
+        detailedCallback.expectBlockedStatusCallback(mCellAgent, BLOCKED_REASON_NONE);
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
         cellNetworkCallback.assertNoCallback();
         detailedCallback.assertNoCallback();
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
 
         mCm.unregisterNetworkCallback(cellNetworkCallback);
     }
@@ -9304,34 +9297,34 @@
         setBlockedReasonChanged(BLOCKED_METERED_REASON_DATA_SAVER);
         defaultCallback.assertNoCallback();
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
-        defaultCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
+        defaultCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mCellAgent);
 
         // Allow to use the network after switching to NOT_METERED network.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.connect(true);
-        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.connect(true);
+        defaultCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
 
         // Switch to METERED network. Restrict the use of the network.
-        mWiFiNetworkAgent.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksValidatedAndBlocked(mCellNetworkAgent);
+        mWiFiAgent.disconnect();
+        defaultCallback.expect(LOST, mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksValidatedAndBlocked(mCellAgent);
 
         // Network becomes NOT_METERED.
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        defaultCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellNetworkAgent);
-        defaultCallback.expectBlockedStatusCallback(false, mCellNetworkAgent);
+        mCellAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        defaultCallback.expectCapabilitiesWith(NET_CAPABILITY_NOT_METERED, mCellAgent);
+        defaultCallback.expectBlockedStatusCallback(false, mCellAgent);
 
         // Verify there's no Networkcallbacks invoked after data saver on/off.
         setBlockedReasonChanged(BLOCKED_METERED_REASON_DATA_SAVER);
         setBlockedReasonChanged(BLOCKED_REASON_NONE);
         defaultCallback.assertNoCallback();
 
-        mCellNetworkAgent.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        defaultCallback.expect(LOST, mCellAgent);
         defaultCallback.assertNoCallback();
 
         mCm.unregisterNetworkCallback(defaultCallback);
@@ -9395,7 +9388,7 @@
 
         // Expect exactly one blocked callback for each agent.
         for (int i = 0; i < agents.length; i++) {
-            final CallbackEntry e = callback.expect(CallbackEntry.BLOCKED_STATUS, TIMEOUT_MS,
+            final CallbackEntry e = callback.expect(BLOCKED_STATUS, TIMEOUT_MS,
                     c -> c.getBlocked() == blocked);
             final Network network = e.getNetwork();
             assertTrue("Received unexpected blocked callback for network " + network,
@@ -9448,14 +9441,14 @@
         expectNetworkRejectNonSecureVpn(inOrder, true, uidRangeParcels);
 
         // Connect a network when lockdown is active, expect to see it blocked.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiNetworkAgent);
-        vpnUidCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        vpnUidDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        vpnDefaultCallbackAsUid.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiAgent);
+        vpnUidCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        vpnUidDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        vpnDefaultCallbackAsUid.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         // Mobile is BLOCKED even though it's not actually connected.
@@ -9464,14 +9457,14 @@
 
         // Disable lockdown, expect to see the network unblocked.
         mMockVpn.setAlwaysOnPackage(null, false /* lockdown */, allowList);
-        callback.expectBlockedStatusCallback(false, mWiFiNetworkAgent);
-        defaultCallback.expectBlockedStatusCallback(false, mWiFiNetworkAgent);
+        callback.expectBlockedStatusCallback(false, mWiFiAgent);
+        defaultCallback.expectBlockedStatusCallback(false, mWiFiAgent);
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
         expectNetworkRejectNonSecureVpn(inOrder, false, uidRangeParcels);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
@@ -9493,22 +9486,22 @@
         final UidRangeParcel[] uidRangeParcelsAlsoExcludingUs = uidRangeParcelsExcludingUids(
                 excludedUids.toArray(new Integer[0]));
         expectNetworkRejectNonSecureVpn(inOrder, true, uidRangeParcelsAlsoExcludingUs);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
 
         // Connect a new network, expect it to be unblocked.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidated(mCellAgent);
         defaultCallback.assertNoCallback();
-        vpnUidCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        vpnUidCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         // Cellular is DISCONNECTED because it's not the default and there are no requests for it.
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
@@ -9523,12 +9516,12 @@
         mMockVpn.setAlwaysOnPackage(ALWAYS_ON_PACKAGE, true /* lockdown */, allowList);
         waitForIdle();
         expectNetworkRejectNonSecureVpn(inOrder, true, uidRangeParcels);
-        defaultCallback.expectBlockedStatusCallback(true, mWiFiNetworkAgent);
-        assertBlockedCallbackInAnyOrder(callback, true, mWiFiNetworkAgent, mCellNetworkAgent);
+        defaultCallback.expectBlockedStatusCallback(true, mWiFiAgent);
+        assertBlockedCallbackInAnyOrder(callback, true, mWiFiAgent, mCellAgent);
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
@@ -9536,13 +9529,13 @@
 
         // Disable lockdown. Everything is unblocked.
         mMockVpn.setAlwaysOnPackage(null, false /* lockdown */, allowList);
-        defaultCallback.expectBlockedStatusCallback(false, mWiFiNetworkAgent);
-        assertBlockedCallbackInAnyOrder(callback, false, mWiFiNetworkAgent, mCellNetworkAgent);
+        defaultCallback.expectBlockedStatusCallback(false, mWiFiAgent);
+        assertBlockedCallbackInAnyOrder(callback, false, mWiFiAgent, mCellAgent);
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
@@ -9556,8 +9549,8 @@
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
@@ -9569,20 +9562,20 @@
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
 
         // Enable lockdown and connect a VPN. The VPN is not blocked.
         mMockVpn.setAlwaysOnPackage(ALWAYS_ON_PACKAGE, true /* lockdown */, allowList);
-        defaultCallback.expectBlockedStatusCallback(true, mWiFiNetworkAgent);
-        assertBlockedCallbackInAnyOrder(callback, true, mWiFiNetworkAgent, mCellNetworkAgent);
+        defaultCallback.expectBlockedStatusCallback(true, mWiFiAgent);
+        assertBlockedCallbackInAnyOrder(callback, true, mWiFiAgent, mCellAgent);
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
         assertNull(mCm.getActiveNetwork());
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
@@ -9595,15 +9588,15 @@
         vpnUidDefaultCallback.assertNoCallback();  // VPN does not apply to VPN_UID
         vpnDefaultCallbackAsUid.assertNoCallback();
         assertEquals(mMockVpn.getNetwork(), mCm.getActiveNetwork());
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(VPN_UID));
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
 
         mMockVpn.disconnect();
-        defaultCallback.expect(CallbackEntry.LOST, mMockVpn);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiNetworkAgent);
+        defaultCallback.expect(LOST, mMockVpn);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiAgent);
         vpnUidCallback.assertNoCallback();
         vpnUidDefaultCallback.assertNoCallback();
         vpnDefaultCallbackAsUid.assertNoCallback();
@@ -9622,8 +9615,8 @@
         mServiceContext.setPermission(NETWORK_SETTINGS, PERMISSION_GRANTED);
 
         // Connect Wi-Fi.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true /* validated */);
 
         // Connect a VPN that excludes its UID from its UID ranges.
         final LinkProperties lp = new LinkProperties();
@@ -9632,7 +9625,7 @@
         final Set<UidRange> ranges = new ArraySet<>();
         ranges.add(new UidRange(0, myUid - 1));
         ranges.add(new UidRange(myUid + 1, UserHandle.PER_USER_RANGE - 1));
-        mMockVpn.setUnderlyingNetworks(new Network[]{mWiFiNetworkAgent.getNetwork()});
+        mMockVpn.setUnderlyingNetworks(new Network[] { mWiFiAgent.getNetwork() });
         mMockVpn.establish(lp, myUid, ranges);
 
         // Wait for validation before registering callbacks.
@@ -9654,8 +9647,8 @@
         perUidCb.expectAvailableCallbacksValidated(mMockVpn);
         // getActiveNetwork is not affected by this bug.
         assertEquals(mMockVpn.getNetwork(), mCm.getActiveNetworkForUid(myUid + 1));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(myUid));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(myUid));
 
         doAsUid(otherUid, () -> mCm.unregisterNetworkCallback(otherUidCb));
         mCm.unregisterNetworkCallback(defaultCb);
@@ -9738,11 +9731,11 @@
         cellLp.setInterfaceName("rmnet0");
         cellLp.addLinkAddress(new LinkAddress("2001:db8::1/64"));
         cellLp.addRoute(new RouteInfo(new IpPrefix("::/0"), null, "rmnet0"));
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
-        systemDefaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
+        systemDefaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
         waitForIdle();
         assertNull(mMockVpn.getAgent());
 
@@ -9751,37 +9744,36 @@
         // TODO: consider fixing this.
         cellLp.addLinkAddress(new LinkAddress("192.0.2.2/25"));
         cellLp.addRoute(new RouteInfo(new IpPrefix("0.0.0.0/0"), null, "rmnet0"));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        callback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        systemDefaultCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED,
-                mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        callback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
+        defaultCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
+        systemDefaultCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         waitForIdle();
         assertNull(mMockVpn.getAgent());
 
         // Disconnect, then try again with a network that supports IPv4 at connection time.
         // Expect lockdown VPN to come up.
         ExpectedBroadcast b1 = expectConnectivityAction(TYPE_MOBILE, DetailedState.DISCONNECTED);
-        mCellNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        defaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        systemDefaultCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        callback.expect(LOST, mCellAgent);
+        defaultCallback.expect(LOST, mCellAgent);
+        systemDefaultCallback.expect(LOST, mCellAgent);
         b1.expectBroadcast();
 
         // When lockdown VPN is active, the NetworkInfo state in CONNECTIVITY_ACTION is overwritten
         // with the state of the VPN network. So expect a CONNECTING broadcast.
         b1 = expectConnectivityAction(TYPE_MOBILE, DetailedState.CONNECTING);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false /* validated */);
-        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
-        systemDefaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false /* validated */);
+        callback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
+        systemDefaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mCellAgent);
         b1.expectBroadcast();
         assertActiveNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_VPN, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mCellNetworkAgent);
+        assertExtraInfoFromCmBlocked(mCellAgent);
 
         // TODO: it would be nice if we could simply rely on the production code here, and have
         // LockdownVpnTracker start the VPN, have the VPN code register its NetworkAgent with
@@ -9799,7 +9791,7 @@
         mMockVpn.expectStartLegacyVpnRunner();
         b1 = expectConnectivityAction(TYPE_VPN, DetailedState.CONNECTED);
         ExpectedBroadcast b2 = expectConnectivityAction(TYPE_MOBILE, DetailedState.CONNECTED);
-        establishLegacyLockdownVpn(mCellNetworkAgent.getNetwork());
+        establishLegacyLockdownVpn(mCellAgent.getNetwork());
         callback.expectAvailableThenValidatedCallbacks(mMockVpn);
         defaultCallback.expectAvailableThenValidatedCallbacks(mMockVpn);
         systemDefaultCallback.assertNoCallback();
@@ -9810,7 +9802,7 @@
         assertNetworkInfo(TYPE_MOBILE, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mCellNetworkAgent);
+        assertExtraInfoFromCmPresent(mCellAgent);
         assertTrue(vpnNc.hasTransport(TRANSPORT_VPN));
         assertTrue(vpnNc.hasTransport(TRANSPORT_CELLULAR));
         assertFalse(vpnNc.hasTransport(TRANSPORT_WIFI));
@@ -9825,13 +9817,13 @@
         final NetworkCapabilities wifiNc = new NetworkCapabilities();
         wifiNc.addTransportType(TRANSPORT_WIFI);
         wifiNc.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp, wifiNc);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp, wifiNc);
 
         b1 = expectConnectivityAction(TYPE_MOBILE, DetailedState.DISCONNECTED);
         // Wifi is CONNECTING because the VPN isn't up yet.
         b2 = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTING);
         ExpectedBroadcast b3 = expectConnectivityAction(TYPE_VPN, DetailedState.DISCONNECTED);
-        mWiFiNetworkAgent.connect(false /* validated */);
+        mWiFiAgent.connect(false /* validated */);
         b1.expectBroadcast();
         b2.expectBroadcast();
         b3.expectBroadcast();
@@ -9842,23 +9834,23 @@
         // connected, so the network is not considered blocked by the lockdown UID ranges? But the
         // fact that a VPN is connected should only result in the VPN itself being unblocked, not
         // any other network. Bug in isUidBlockedByVpn?
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        callback.expect(CallbackEntry.LOST, mMockVpn);
-        defaultCallback.expect(CallbackEntry.LOST, mMockVpn);
-        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiNetworkAgent);
-        systemDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        callback.expect(LOST, mMockVpn);
+        defaultCallback.expect(LOST, mMockVpn);
+        defaultCallback.expectAvailableCallbacksUnvalidatedAndBlocked(mWiFiAgent);
+        systemDefaultCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // While the VPN is reconnecting on the new network, everything is blocked.
         assertActiveNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_MOBILE, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.BLOCKED);
         assertNetworkInfo(TYPE_VPN, DetailedState.BLOCKED);
-        assertExtraInfoFromCmBlocked(mWiFiNetworkAgent);
+        assertExtraInfoFromCmBlocked(mWiFiAgent);
 
         // The VPN comes up again on wifi.
         b1 = expectConnectivityAction(TYPE_VPN, DetailedState.CONNECTED);
         b2 = expectConnectivityAction(TYPE_WIFI, DetailedState.CONNECTED);
-        establishLegacyLockdownVpn(mWiFiNetworkAgent.getNetwork());
+        establishLegacyLockdownVpn(mWiFiAgent.getNetwork());
         callback.expectAvailableThenValidatedCallbacks(mMockVpn);
         defaultCallback.expectAvailableThenValidatedCallbacks(mMockVpn);
         systemDefaultCallback.assertNoCallback();
@@ -9868,7 +9860,7 @@
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mWiFiNetworkAgent);
+        assertExtraInfoFromCmPresent(mWiFiAgent);
         vpnNc = mCm.getNetworkCapabilities(mMockVpn.getNetwork());
         assertTrue(vpnNc.hasTransport(TRANSPORT_VPN));
         assertTrue(vpnNc.hasTransport(TRANSPORT_WIFI));
@@ -9876,8 +9868,8 @@
         assertTrue(vpnNc.hasCapability(NET_CAPABILITY_NOT_METERED));
 
         // Disconnect cell. Nothing much happens since it's not the default network.
-        mCellNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        callback.expect(LOST, mCellAgent);
         defaultCallback.assertNoCallback();
         systemDefaultCallback.assertNoCallback();
 
@@ -9885,17 +9877,17 @@
         assertNetworkInfo(TYPE_MOBILE, DetailedState.DISCONNECTED);
         assertNetworkInfo(TYPE_WIFI, DetailedState.CONNECTED);
         assertNetworkInfo(TYPE_VPN, DetailedState.CONNECTED);
-        assertExtraInfoFromCmPresent(mWiFiNetworkAgent);
+        assertExtraInfoFromCmPresent(mWiFiAgent);
 
         b1 = expectConnectivityAction(TYPE_WIFI, DetailedState.DISCONNECTED);
         b2 = expectConnectivityAction(TYPE_VPN, DetailedState.DISCONNECTED);
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        systemDefaultCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
+        systemDefaultCallback.expect(LOST, mWiFiAgent);
         b1.expectBroadcast();
         callback.expectCapabilitiesThat(mMockVpn, nc -> !nc.hasTransport(TRANSPORT_WIFI));
         mMockVpn.expectStopVpnRunnerPrivileged();
-        callback.expect(CallbackEntry.LOST, mMockVpn);
+        callback.expect(LOST, mMockVpn);
         b2.expectBroadcast();
 
         VMSHandlerThread.quitSafely();
@@ -10042,32 +10034,32 @@
                     callbackWithoutCap);
 
             // Setup networks with testing capability and verify the default network changes.
-            mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-            mCellNetworkAgent.addCapability(testCap);
-            mCellNetworkAgent.connect(true);
-            callbackWithCap.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-            callbackWithoutCap.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-            verify(mMockNetd).networkSetDefault(eq(mCellNetworkAgent.getNetwork().netId));
+            mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+            mCellAgent.addCapability(testCap);
+            mCellAgent.connect(true);
+            callbackWithCap.expectAvailableThenValidatedCallbacks(mCellAgent);
+            callbackWithoutCap.expectAvailableThenValidatedCallbacks(mCellAgent);
+            verify(mMockNetd).networkSetDefault(eq(mCellAgent.getNetwork().netId));
             reset(mMockNetd);
 
-            mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-            mWiFiNetworkAgent.addCapability(testCap);
-            mWiFiNetworkAgent.connect(true);
-            callbackWithCap.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-            callbackWithoutCap.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
-            verify(mMockNetd).networkSetDefault(eq(mWiFiNetworkAgent.getNetwork().netId));
+            mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+            mWiFiAgent.addCapability(testCap);
+            mWiFiAgent.connect(true);
+            callbackWithCap.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+            callbackWithoutCap.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
+            verify(mMockNetd).networkSetDefault(eq(mWiFiAgent.getNetwork().netId));
             reset(mMockNetd);
 
             // Remove the testing capability on wifi, verify the callback and default network
             // changes back to cellular.
-            mWiFiNetworkAgent.removeCapability(testCap);
-            callbackWithCap.expectAvailableCallbacksValidated(mCellNetworkAgent);
-            callbackWithoutCap.expectCapabilitiesWithout(testCap, mWiFiNetworkAgent);
-            verify(mMockNetd).networkSetDefault(eq(mCellNetworkAgent.getNetwork().netId));
+            mWiFiAgent.removeCapability(testCap);
+            callbackWithCap.expectAvailableCallbacksValidated(mCellAgent);
+            callbackWithoutCap.expectCapabilitiesWithout(testCap, mWiFiAgent);
+            verify(mMockNetd).networkSetDefault(eq(mCellAgent.getNetwork().netId));
             reset(mMockNetd);
 
-            mCellNetworkAgent.removeCapability(testCap);
-            callbackWithCap.expect(CallbackEntry.LOST, mCellNetworkAgent);
+            mCellAgent.removeCapability(testCap);
+            callbackWithCap.expect(LOST, mCellAgent);
             callbackWithoutCap.assertNoCallback();
             verify(mMockNetd).networkClearDefault();
 
@@ -10080,8 +10072,8 @@
     public final void testBatteryStatsNetworkType() throws Exception {
         final LinkProperties cellLp = new LinkProperties();
         cellLp.setInterfaceName("cell0");
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(true);
         waitForIdle();
         final ArrayTrackRecord<ReportedInterfaces>.ReadHead readHead =
                 mDeps.mReportedInterfaceHistory.newReadHead();
@@ -10091,24 +10083,24 @@
 
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName("wifi0");
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
         waitForIdle();
         assertNotNull(readHead.poll(TIMEOUT_MS, ri -> ri.contentEquals(mServiceContext,
                 wifiLp.getInterfaceName(),
                 new int[] { TRANSPORT_WIFI })));
 
-        mCellNetworkAgent.disconnect();
-        mWiFiNetworkAgent.disconnect();
+        mCellAgent.disconnect();
+        mWiFiAgent.disconnect();
 
         cellLp.setInterfaceName("wifi0");
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(true);
         waitForIdle();
         assertNotNull(readHead.poll(TIMEOUT_MS, ri -> ri.contentEquals(mServiceContext,
                 cellLp.getInterfaceName(),
                 new int[] { TRANSPORT_CELLULAR })));
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
     }
 
     /**
@@ -10229,12 +10221,12 @@
         cellLp.addLinkAddress(myIpv6);
         cellLp.addRoute(ipv6Default);
         cellLp.addRoute(ipv6Subnet);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
         reset(mClatCoordinator);
 
         // Connect with ipv6 link properties. Expect prefix discovery to be started.
-        mCellNetworkAgent.connect(true);
-        int cellNetId = mCellNetworkAgent.getNetwork().netId;
+        mCellAgent.connect(true);
+        int cellNetId = mCellAgent.getNetwork().netId;
         waitForIdle();
 
         verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(cellNetId,
@@ -10248,7 +10240,7 @@
                 cellLp.getInterfaceName(),
                 new int[] { TRANSPORT_CELLULAR })));
 
-        networkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        networkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         verify(mMockDnsResolver, times(1)).startPrefix64Discovery(cellNetId);
 
         // Switching default network updates TCP buffer sizes.
@@ -10256,8 +10248,8 @@
         // Add an IPv4 address. Expect prefix discovery to be stopped. Netd doesn't tell us that
         // the NAT64 prefix was removed because one was never discovered.
         cellLp.addLinkAddress(myIpv4);
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         assertRoutesAdded(cellNetId, ipv4Subnet);
         verify(mMockDnsResolver, times(1)).stopPrefix64Discovery(cellNetId);
         verify(mMockDnsResolver, atLeastOnce()).setResolverConfiguration(any());
@@ -10279,37 +10271,37 @@
 
         // Remove IPv4 address. Expect prefix discovery to be started again.
         cellLp.removeLinkAddress(myIpv4);
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         verify(mMockDnsResolver, times(1)).startPrefix64Discovery(cellNetId);
         assertRoutesRemoved(cellNetId, ipv4Subnet);
 
         // When NAT64 prefix discovery succeeds, LinkProperties are updated and clatd is started.
-        Nat464Xlat clat = getNat464Xlat(mCellNetworkAgent);
-        assertNull(mCm.getLinkProperties(mCellNetworkAgent.getNetwork()).getNat64Prefix());
+        Nat464Xlat clat = getNat464Xlat(mCellAgent);
+        assertNull(mCm.getLinkProperties(mCellAgent.getNetwork()).getNat64Prefix());
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(
                 makeNat64PrefixEvent(cellNetId, PREFIX_OPERATION_ADDED, kNat64PrefixString, 96));
         LinkProperties lpBeforeClat = networkCallback.expect(
-                CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent).getLp();
+                LINK_PROPERTIES_CHANGED, mCellAgent).getLp();
         assertEquals(0, lpBeforeClat.getStackedLinks().size());
         assertEquals(kNat64Prefix, lpBeforeClat.getNat64Prefix());
         verifyClatdStart(null /* inOrder */, MOBILE_IFNAME, cellNetId, kNat64Prefix.toString());
 
         // Clat iface comes up. Expect stacked link to be added.
         clat.interfaceLinkStateChanged(CLAT_MOBILE_IFNAME, true);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        List<LinkProperties> stackedLps = mCm.getLinkProperties(mCellNetworkAgent.getNetwork())
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
+        List<LinkProperties> stackedLps = mCm.getLinkProperties(mCellAgent.getNetwork())
                 .getStackedLinks();
         assertEquals(makeClatLinkProperties(myIpv4), stackedLps.get(0));
         assertRoutesAdded(cellNetId, stackedDefault);
         verify(mMockNetd, times(1)).networkAddInterface(cellNetId, CLAT_MOBILE_IFNAME);
         // Change trivial linkproperties and see if stacked link is preserved.
         cellLp.addDnsServer(InetAddress.getByName("8.8.8.8"));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
 
         List<LinkProperties> stackedLpsAfterChange =
-                mCm.getLinkProperties(mCellNetworkAgent.getNetwork()).getStackedLinks();
+                mCm.getLinkProperties(mCellAgent.getNetwork()).getStackedLinks();
         assertNotEquals(stackedLpsAfterChange, Collections.EMPTY_LIST);
         assertEquals(makeClatLinkProperties(myIpv4), stackedLpsAfterChange.get(0));
 
@@ -10332,7 +10324,7 @@
         // Expect clatd to be stopped and started with the new prefix.
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(makeNat64PrefixEvent(
                 cellNetId, PREFIX_OPERATION_ADDED, kOtherNat64PrefixString, 96));
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
                 (lp) -> lp.getStackedLinks().size() == 0);
         verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
         assertRoutesRemoved(cellNetId, stackedDefault);
@@ -10340,10 +10332,10 @@
 
         verifyClatdStart(null /* inOrder */, MOBILE_IFNAME, cellNetId,
                 kOtherNat64Prefix.toString());
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
                 (lp) -> lp.getNat64Prefix().equals(kOtherNat64Prefix));
         clat.interfaceLinkStateChanged(CLAT_MOBILE_IFNAME, true);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
                 (lp) -> lp.getStackedLinks().size() == 1);
         assertRoutesAdded(cellNetId, stackedDefault);
         verify(mMockNetd, times(1)).networkAddInterface(cellNetId, CLAT_MOBILE_IFNAME);
@@ -10354,15 +10346,15 @@
         // linkproperties are cleaned up.
         cellLp.addLinkAddress(myIpv4);
         cellLp.addRoute(ipv4Subnet);
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         assertRoutesAdded(cellNetId, ipv4Subnet);
         verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
         verify(mMockDnsResolver, times(1)).stopPrefix64Discovery(cellNetId);
 
         // As soon as stop is called, the linkproperties lose the stacked interface.
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
-        LinkProperties actualLpAfterIpv4 = mCm.getLinkProperties(mCellNetworkAgent.getNetwork());
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
+        LinkProperties actualLpAfterIpv4 = mCm.getLinkProperties(mCellAgent.getNetwork());
         LinkProperties expected = new LinkProperties(cellLp);
         expected.setNat64Prefix(kOtherNat64Prefix);
         assertEquals(expected, actualLpAfterIpv4);
@@ -10385,49 +10377,49 @@
         // Stopping prefix discovery causes netd to tell us that the NAT64 prefix is gone.
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(makeNat64PrefixEvent(
                 cellNetId, PREFIX_OPERATION_REMOVED, kOtherNat64PrefixString, 96));
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                (lp) -> lp.getNat64Prefix() == null);
+        networkCallback.expectLinkPropertiesThat(mCellAgent, lp -> lp.getNat64Prefix() == null);
 
         // Remove IPv4 address and expect prefix discovery and clatd to be started again.
         cellLp.removeLinkAddress(myIpv4);
         cellLp.removeRoute(new RouteInfo(myIpv4, null, MOBILE_IFNAME));
         cellLp.removeDnsServer(InetAddress.getByName("8.8.8.8"));
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         assertRoutesRemoved(cellNetId, ipv4Subnet);  // Directly-connected routes auto-added.
         verify(mMockDnsResolver, times(1)).startPrefix64Discovery(cellNetId);
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(makeNat64PrefixEvent(
                 cellNetId, PREFIX_OPERATION_ADDED, kNat64PrefixString, 96));
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         verifyClatdStart(null /* inOrder */, MOBILE_IFNAME, cellNetId, kNat64Prefix.toString());
 
         // Clat iface comes up. Expect stacked link to be added.
         clat.interfaceLinkStateChanged(CLAT_MOBILE_IFNAME, true);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                (lp) -> lp.getStackedLinks().size() == 1 && lp.getNat64Prefix() != null);
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
+                lp -> lp.getStackedLinks().size() == 1 && lp.getNat64Prefix() != null);
         assertRoutesAdded(cellNetId, stackedDefault);
         verify(mMockNetd, times(1)).networkAddInterface(cellNetId, CLAT_MOBILE_IFNAME);
 
         // NAT64 prefix is removed. Expect that clat is stopped.
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(makeNat64PrefixEvent(
                 cellNetId, PREFIX_OPERATION_REMOVED, kNat64PrefixString, 96));
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                (lp) -> lp.getStackedLinks().size() == 0 && lp.getNat64Prefix() == null);
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
+                lp -> lp.getStackedLinks().size() == 0 && lp.getNat64Prefix() == null);
         assertRoutesRemoved(cellNetId, ipv4Subnet, stackedDefault);
 
         // Stop has no effect because clat is already stopped.
         verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                (lp) -> lp.getStackedLinks().size() == 0);
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
+                lp -> lp.getStackedLinks().size() == 0);
         verify(mMockNetd, times(1)).networkRemoveInterface(cellNetId, CLAT_MOBILE_IFNAME);
         verify(mMockNetd, times(1)).interfaceGetCfg(CLAT_MOBILE_IFNAME);
         // Clean up.
-        mCellNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        networkCallback.expect(LOST, mCellAgent);
         networkCallback.assertNoCallback();
         verify(mMockNetd, times(1)).idletimerRemoveInterface(eq(MOBILE_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_CELLULAR)));
         verify(mMockNetd).networkDestroy(cellNetId);
+        verify(mMockNetd).setNetworkAllowlist(any());
         verifyNoMoreInteractions(mMockNetd);
         verifyNoMoreInteractions(mClatCoordinator);
         reset(mMockNetd);
@@ -10439,20 +10431,20 @@
         doReturn(getClatInterfaceConfigParcel(myIpv4)).when(mMockNetd)
                 .interfaceGetCfg(CLAT_MOBILE_IFNAME);
         cellLp.setNat64Prefix(kNat64Prefix);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false /* validated */);
-        networkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        cellNetId = mCellNetworkAgent.getNetwork().netId;
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false /* validated */);
+        networkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        cellNetId = mCellAgent.getNetwork().netId;
         verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(cellNetId,
                 INetd.PERMISSION_NONE));
         assertRoutesAdded(cellNetId, ipv6Subnet, ipv6Default);
 
         // Clatd is started and clat iface comes up. Expect stacked link to be added.
         verifyClatdStart(null /* inOrder */, MOBILE_IFNAME, cellNetId, kNat64Prefix.toString());
-        clat = getNat464Xlat(mCellNetworkAgent);
+        clat = getNat464Xlat(mCellAgent);
         clat.interfaceLinkStateChanged(CLAT_MOBILE_IFNAME, true /* up */);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                (lp) -> lp.getStackedLinks().size() == 1
+        networkCallback.expectLinkPropertiesThat(mCellAgent,
+                lp -> lp.getStackedLinks().size() == 1
                         && lp.getNat64Prefix().equals(kNat64Prefix));
         verify(mMockNetd).networkAddInterface(cellNetId, CLAT_MOBILE_IFNAME);
         // assertRoutesAdded sees all calls since last mMockNetd reset, so expect IPv6 routes again.
@@ -10461,20 +10453,21 @@
         reset(mClatCoordinator);
 
         // Disconnect the network. clat is stopped and the network is destroyed.
-        mCellNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        networkCallback.expect(LOST, mCellAgent);
         networkCallback.assertNoCallback();
         verifyClatdStop(null /* inOrder */, MOBILE_IFNAME);
         verify(mMockNetd).idletimerRemoveInterface(eq(MOBILE_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_CELLULAR)));
         verify(mMockNetd).networkDestroy(cellNetId);
+        verify(mMockNetd).setNetworkAllowlist(any());
         verifyNoMoreInteractions(mMockNetd);
         verifyNoMoreInteractions(mClatCoordinator);
 
         mCm.unregisterNetworkCallback(networkCallback);
     }
 
-    private void expectNat64PrefixChange(TestableNetworkCallback callback,
+    private void expectNat64PrefixChange(TestNetworkCallback callback,
             TestNetworkAgentWrapper agent, IpPrefix prefix) {
         callback.expectLinkPropertiesThat(agent, x -> Objects.equals(x.getNat64Prefix(), prefix));
     }
@@ -10506,11 +10499,11 @@
         // prefix discovery is never started.
         LinkProperties lp = new LinkProperties(baseLp);
         lp.setNat64Prefix(pref64FromRa);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
-        mWiFiNetworkAgent.connect(false);
-        final Network network = mWiFiNetworkAgent.getNetwork();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
+        mWiFiAgent.connect(false);
+        final Network network = mWiFiAgent.getNetwork();
         int netId = network.getNetId();
-        callback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        callback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
         verifyClatdStart(inOrder, iface, netId, pref64FromRa.toString());
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, pref64FromRa.toString());
         inOrder.verify(mMockDnsResolver, never()).startPrefix64Discovery(netId);
@@ -10519,8 +10512,8 @@
 
         // If the RA prefix is withdrawn, clatd is stopped and prefix discovery is started.
         lp.setNat64Prefix(null);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, null);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, null);
         verifyClatdStop(inOrder, iface);
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, "");
         inOrder.verify(mMockDnsResolver).startPrefix64Discovery(netId);
@@ -10528,8 +10521,8 @@
         // If the RA prefix appears while DNS discovery is in progress, discovery is stopped and
         // clatd is started with the prefix from the RA.
         lp.setNat64Prefix(pref64FromRa);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, pref64FromRa);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, pref64FromRa);
         verifyClatdStart(inOrder, iface, netId, pref64FromRa.toString());
         inOrder.verify(mMockDnsResolver).stopPrefix64Discovery(netId);
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, pref64FromRa.toString());
@@ -10537,21 +10530,21 @@
         // Withdraw the RA prefix so we can test the case where an RA prefix appears after DNS
         // discovery has succeeded.
         lp.setNat64Prefix(null);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, null);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, null);
         verifyClatdStop(inOrder, iface);
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, "");
         inOrder.verify(mMockDnsResolver).startPrefix64Discovery(netId);
 
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(
                 makeNat64PrefixEvent(netId, PREFIX_OPERATION_ADDED, pref64FromDnsStr, 96));
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, pref64FromDns);
+        expectNat64PrefixChange(callback, mWiFiAgent, pref64FromDns);
         verifyClatdStart(inOrder, iface, netId, pref64FromDns.toString());
 
         // If an RA advertises the same prefix that was discovered by DNS, nothing happens: prefix
         // discovery is not stopped, and there are no callbacks.
         lp.setNat64Prefix(pref64FromDns);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
         callback.assertNoCallback();
         verifyNeverClatdStop(inOrder, iface);
         verifyNeverClatdStart(inOrder, iface);
@@ -10561,7 +10554,7 @@
 
         // If the RA is later withdrawn, nothing happens again.
         lp.setNat64Prefix(null);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
         callback.assertNoCallback();
         verifyNeverClatdStop(inOrder, iface);
         verifyNeverClatdStart(inOrder, iface);
@@ -10571,8 +10564,8 @@
 
         // If the RA prefix changes, clatd is restarted and prefix discovery is stopped.
         lp.setNat64Prefix(pref64FromRa);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, pref64FromRa);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, pref64FromRa);
         verifyClatdStop(inOrder, iface);
         inOrder.verify(mMockDnsResolver).stopPrefix64Discovery(netId);
 
@@ -10586,8 +10579,8 @@
 
         // If the RA prefix changes, clatd is restarted and prefix discovery is not started.
         lp.setNat64Prefix(newPref64FromRa);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, newPref64FromRa);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, newPref64FromRa);
         verifyClatdStop(inOrder, iface);
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, "");
         verifyClatdStart(inOrder, iface, netId, newPref64FromRa.toString());
@@ -10597,7 +10590,7 @@
 
         // If the RA prefix changes to the same value, nothing happens.
         lp.setNat64Prefix(newPref64FromRa);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
         callback.assertNoCallback();
         assertEquals(newPref64FromRa, mCm.getLinkProperties(network).getNat64Prefix());
         verifyNeverClatdStop(inOrder, iface);
@@ -10611,19 +10604,19 @@
         // If the same prefix is learned first by DNS and then by RA, and clat is later stopped,
         // (e.g., because the network disconnects) setPrefix64(netid, "") is never called.
         lp.setNat64Prefix(null);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, null);
+        mWiFiAgent.sendLinkProperties(lp);
+        expectNat64PrefixChange(callback, mWiFiAgent, null);
         verifyClatdStop(inOrder, iface);
         inOrder.verify(mMockDnsResolver).setPrefix64(netId, "");
         inOrder.verify(mMockDnsResolver).startPrefix64Discovery(netId);
         mService.mResolverUnsolEventCallback.onNat64PrefixEvent(
                 makeNat64PrefixEvent(netId, PREFIX_OPERATION_ADDED, pref64FromDnsStr, 96));
-        expectNat64PrefixChange(callback, mWiFiNetworkAgent, pref64FromDns);
+        expectNat64PrefixChange(callback, mWiFiAgent, pref64FromDns);
         verifyClatdStart(inOrder, iface, netId, pref64FromDns.toString());
         inOrder.verify(mMockDnsResolver, never()).setPrefix64(eq(netId), any());
 
         lp.setNat64Prefix(pref64FromDns);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent.sendLinkProperties(lp);
         callback.assertNoCallback();
         verifyNeverClatdStop(inOrder, iface);
         verifyNeverClatdStart(inOrder, iface);
@@ -10635,8 +10628,8 @@
         // before CONNECTIVITY_ACTION is sent. Wait for CONNECTIVITY_ACTION before verifying that
         // clat has been stopped, or the test will be flaky.
         ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.DISCONNECTED);
-        mWiFiNetworkAgent.disconnect();
-        callback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        callback.expect(LOST, mWiFiAgent);
         b.expectBroadcast();
 
         verifyClatdStop(inOrder, iface);
@@ -10663,17 +10656,17 @@
         cellLp.setInterfaceName(MOBILE_IFNAME);
         cellLp.addLinkAddress(new LinkAddress("2001:db8:1::1/64"));
         cellLp.addRoute(new RouteInfo(new IpPrefix("::/0"), null, MOBILE_IFNAME));
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
 
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        defaultCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        final int cellNetId = mCellNetworkAgent.getNetwork().netId;
+        mCellAgent.sendLinkProperties(cellLp);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        defaultCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        final int cellNetId = mCellAgent.getNetwork().netId;
         waitForIdle();
 
         verify(mMockDnsResolver, never()).startPrefix64Discovery(cellNetId);
-        Nat464Xlat clat = getNat464Xlat(mCellNetworkAgent);
+        Nat464Xlat clat = getNat464Xlat(mCellAgent);
         assertTrue("Nat464Xlat was not IDLE", !clat.isStarted());
 
         // This cannot happen because prefix discovery cannot succeed if it is never started.
@@ -10693,25 +10686,25 @@
                 .build();
         mCm.registerNetworkCallback(networkRequest, networkCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         final LinkProperties cellLp = new LinkProperties();
         cellLp.setInterfaceName(MOBILE_IFNAME);
-        mCellNetworkAgent.sendLinkProperties(cellLp);
-        mCellNetworkAgent.connect(true);
-        networkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(cellLp);
+        mCellAgent.connect(true);
+        networkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         verify(mMockNetd, times(1)).idletimerAddInterface(eq(MOBILE_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_CELLULAR)));
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent.sendLinkProperties(wifiLp);
 
         // Network switch
-        mWiFiNetworkAgent.connect(true);
-        networkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        networkCallback.expectLosing(mCellNetworkAgent);
-        networkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.connect(true);
+        networkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        networkCallback.expectLosing(mCellAgent);
+        networkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         verify(mMockNetd, times(1)).idletimerAddInterface(eq(WIFI_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_WIFI)));
         verify(mMockNetd, times(1)).idletimerRemoveInterface(eq(MOBILE_IFNAME), anyInt(),
@@ -10719,8 +10712,8 @@
 
         // Disconnect wifi and switch back to cell
         reset(mMockNetd);
-        mWiFiNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
+        mWiFiAgent.disconnect();
+        networkCallback.expect(LOST, mWiFiAgent);
         assertNoCallbacks(networkCallback);
         verify(mMockNetd, times(1)).idletimerRemoveInterface(eq(WIFI_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_WIFI)));
@@ -10729,13 +10722,13 @@
 
         // reconnect wifi
         reset(mMockNetd);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
-        mWiFiNetworkAgent.connect(true);
-        networkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        networkCallback.expectLosing(mCellNetworkAgent);
-        networkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
+        mWiFiAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent.connect(true);
+        networkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        networkCallback.expectLosing(mCellAgent);
+        networkCallback.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
         verify(mMockNetd, times(1)).idletimerAddInterface(eq(WIFI_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_WIFI)));
         verify(mMockNetd, times(1)).idletimerRemoveInterface(eq(MOBILE_IFNAME), anyInt(),
@@ -10743,21 +10736,20 @@
 
         // Disconnect cell
         reset(mMockNetd);
-        mCellNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        networkCallback.expect(LOST, mCellAgent);
         // LOST callback is triggered earlier than removing idle timer. Broadcast should also be
         // sent as network being switched. Ensure rule removal for cell will not be triggered
         // unexpectedly before network being removed.
         waitForIdle();
         verify(mMockNetd, times(0)).idletimerRemoveInterface(eq(MOBILE_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_CELLULAR)));
-        verify(mMockNetd, times(1)).networkDestroy(eq(mCellNetworkAgent.getNetwork().netId));
-        verify(mMockDnsResolver, times(1))
-                .destroyNetworkCache(eq(mCellNetworkAgent.getNetwork().netId));
+        verify(mMockNetd, times(1)).networkDestroy(eq(mCellAgent.getNetwork().netId));
+        verify(mMockDnsResolver, times(1)).destroyNetworkCache(eq(mCellAgent.getNetwork().netId));
 
         // Disconnect wifi
         ExpectedBroadcast b = expectConnectivityAction(TYPE_WIFI, DetailedState.DISCONNECTED);
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         b.expectBroadcast();
         verify(mMockNetd, times(1)).idletimerRemoveInterface(eq(WIFI_IFNAME), anyInt(),
                 eq(Integer.toString(TRANSPORT_WIFI)));
@@ -10784,21 +10776,21 @@
         final TestNetworkCallback networkCallback = new TestNetworkCallback();
         mCm.registerNetworkCallback(networkRequest, networkCallback);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         reset(mMockNetd);
         // Switching default network updates TCP buffer sizes.
-        mCellNetworkAgent.connect(false);
-        networkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        mCellAgent.connect(false);
+        networkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
         verifyTcpBufferSizeChange(ConnectivityService.DEFAULT_TCP_BUFFER_SIZES);
         // Change link Properties should have updated tcp buffer size.
         LinkProperties lp = new LinkProperties();
         lp.setTcpBufferSizes(testTcpBufferSizes);
-        mCellNetworkAgent.sendLinkProperties(lp);
-        networkCallback.expect(CallbackEntry.LINK_PROPERTIES_CHANGED, mCellNetworkAgent);
+        mCellAgent.sendLinkProperties(lp);
+        networkCallback.expect(LINK_PROPERTIES_CHANGED, mCellAgent);
         verifyTcpBufferSizeChange(testTcpBufferSizes);
         // Clean up.
-        mCellNetworkAgent.disconnect();
-        networkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        networkCallback.expect(LOST, mCellAgent);
         networkCallback.assertNoCallback();
         mCm.unregisterNetworkCallback(networkCallback);
     }
@@ -10806,8 +10798,8 @@
     @Test
     public void testGetGlobalProxyForNetwork() throws Exception {
         final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        final Network wifiNetwork = mWiFiNetworkAgent.getNetwork();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        final Network wifiNetwork = mWiFiAgent.getNetwork();
         mProxyTracker.setGlobalProxy(testProxyInfo);
         assertEquals(testProxyInfo, mService.getProxyForNetwork(wifiNetwork));
     }
@@ -10815,15 +10807,15 @@
     @Test
     public void testGetProxyForActiveNetwork() throws Exception {
         final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         waitForIdle();
         assertNull(mService.getProxyForNetwork(null));
 
         final LinkProperties testLinkProperties = new LinkProperties();
         testLinkProperties.setHttpProxy(testProxyInfo);
 
-        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        mWiFiAgent.sendLinkProperties(testLinkProperties);
         waitForIdle();
 
         assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
@@ -10834,8 +10826,8 @@
         final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
 
         // Set up a WiFi network with no proxy
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         waitForIdle();
         assertNull(mService.getProxyForNetwork(null));
 
@@ -10848,7 +10840,7 @@
         // Test that the VPN network returns a proxy, and the WiFi does not.
         assertEquals(testProxyInfo, mService.getProxyForNetwork(mMockVpn.getNetwork()));
         assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
-        assertNull(mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+        assertNull(mService.getProxyForNetwork(mWiFiAgent.getNetwork()));
 
         // Test that the VPN network returns no proxy when it is set to null.
         testLinkProperties.setHttpProxy(null);
@@ -10859,7 +10851,7 @@
 
         // Set WiFi proxy and check that the vpn proxy is still null.
         testLinkProperties.setHttpProxy(testProxyInfo);
-        mWiFiNetworkAgent.sendLinkProperties(testLinkProperties);
+        mWiFiAgent.sendLinkProperties(testLinkProperties);
         waitForIdle();
         assertNull(mService.getProxyForNetwork(null));
 
@@ -10867,8 +10859,8 @@
         // correct proxy setting.
         mMockVpn.disconnect();
         waitForIdle();
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
-        assertEquals(testProxyInfo, mService.getProxyForNetwork(mWiFiNetworkAgent.getNetwork()));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(testProxyInfo, mService.getProxyForNetwork(mWiFiAgent.getNetwork()));
         assertEquals(testProxyInfo, mService.getProxyForNetwork(null));
     }
 
@@ -11047,15 +11039,15 @@
 
     @Test
     public void testLinkPropertiesWithWakeOnLanForActiveNetwork() throws Exception {
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
 
         LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_WOL_IFNAME);
         wifiLp.setWakeOnLanSupported(false);
 
         // Default network switch should update ifaces.
-        mWiFiNetworkAgent.connect(false);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent.connect(false);
+        mWiFiAgent.sendLinkProperties(wifiLp);
         waitForIdle();
 
         // ConnectivityService should have changed the WakeOnLanSupported to true
@@ -11447,18 +11439,17 @@
                 .addTransportType(TRANSPORT_WIFI).build();
         mCm.registerNetworkCallback(wifiRequest, wifiNetworkCallback);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(),
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(),
                 ncTemplate);
-        mWiFiNetworkAgent.connect(false);
+        mWiFiAgent.connect(false);
 
-        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        wifiNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
         // Send network capabilities update with TransportInfo to trigger capabilities changed
         // callback.
-        mWiFiNetworkAgent.setNetworkCapabilities(
-                ncTemplate.setTransportInfo(actualTransportInfo), true);
+        mWiFiAgent.setNetworkCapabilities(ncTemplate.setTransportInfo(actualTransportInfo), true);
 
-        wifiNetworkCallback.expectCapabilitiesThat(mWiFiNetworkAgent,
+        wifiNetworkCallback.expectCapabilitiesThat(mWiFiAgent,
                 nc -> Objects.equals(expectedOwnerUid, nc.getOwnerUid())
                         && Objects.equals(expectedTransportInfo, nc.getTransportInfo()));
     }
@@ -11487,32 +11478,31 @@
                 .addTransportType(TRANSPORT_WIFI)
                 .setTransportInfo(new TestTransportInfo());
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(),
-                ncTemplate);
-        mWiFiNetworkAgent.connect(true /* validated; waits for callback */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(), ncTemplate);
+        mWiFiAgent.connect(true /* validated; waits for callback */);
 
         // NETWORK_SETTINGS redaction is controlled by the NETWORK_SETTINGS permission
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).settingsRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).settingsRedacted);
         withPermission(NETWORK_SETTINGS, () -> {
-            assertFalse(getTestTransportInfo(mWiFiNetworkAgent).settingsRedacted);
+            assertFalse(getTestTransportInfo(mWiFiAgent).settingsRedacted);
         });
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).settingsRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).settingsRedacted);
 
         // LOCAL_MAC_ADDRESS redaction is controlled by the LOCAL_MAC_ADDRESS permission
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).localMacAddressRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).localMacAddressRedacted);
         withPermission(LOCAL_MAC_ADDRESS, () -> {
-            assertFalse(getTestTransportInfo(mWiFiNetworkAgent).localMacAddressRedacted);
+            assertFalse(getTestTransportInfo(mWiFiAgent).localMacAddressRedacted);
         });
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).localMacAddressRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).localMacAddressRedacted);
 
         // Synchronous getNetworkCapabilities calls never return unredacted location-sensitive
         // information.
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).locationRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).locationRedacted);
         setupLocationPermissions(Build.VERSION_CODES.S, true, AppOpsManager.OPSTR_FINE_LOCATION,
                 Manifest.permission.ACCESS_FINE_LOCATION);
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).locationRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).locationRedacted);
         denyAllLocationPrivilegedPermissions();
-        assertTrue(getTestTransportInfo(mWiFiNetworkAgent).locationRedacted);
+        assertTrue(getTestTransportInfo(mWiFiAgent).locationRedacted);
     }
 
     private void setupConnectionOwnerUid(int vpnOwnerUid, @VpnManager.VpnType int vpnType)
@@ -11937,9 +11927,9 @@
         mCm.registerDefaultNetworkCallback(callback);
         final LinkProperties linkProperties = new LinkProperties();
         linkProperties.setInterfaceName(INTERFACE_NAME);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, linkProperties);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, linkProperties);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
         callback.assertNoCallback();
 
         final NetworkRequest request = new NetworkRequest.Builder().build();
@@ -11976,10 +11966,10 @@
         final NetworkCapabilities ncTemplate = new NetworkCapabilities()
                 .addTransportType(TRANSPORT_CELLULAR)
                 .setTransportInfo(new TestTransportInfo());
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, new LinkProperties(),
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, new LinkProperties(),
                 ncTemplate);
-        mCellNetworkAgent.connect(true);
-        callback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.connect(true);
+        callback.expectAvailableThenValidatedCallbacks(mCellAgent);
         callback.assertNoCallback();
 
         // Make sure a report is sent and that the caps are suitably redacted.
@@ -12005,7 +11995,7 @@
 
         // Trigger notifyDataStallSuspected() on the INetworkMonitorCallbacks instance in the
         // cellular network agent
-        mCellNetworkAgent.notifyDataStallSuspected();
+        mCellAgent.notifyDataStallSuspected();
 
         // Verify onDataStallSuspected fired
         verify(mConnectivityDiagnosticsCallback, timeout(TIMEOUT_MS)).onDataStallSuspected(
@@ -12016,7 +12006,7 @@
     public void testConnectivityDiagnosticsCallbackOnConnectivityReported() throws Exception {
         setUpConnectivityDiagnosticsCallback();
 
-        final Network n = mCellNetworkAgent.getNetwork();
+        final Network n = mCellAgent.getNetwork();
         final boolean hasConnectivity = true;
         mService.reportNetworkConnectivity(n, hasConnectivity);
 
@@ -12049,7 +12039,7 @@
 
         // report known Connectivity from a different uid. Verify that network is not re-validated
         // and this callback is not notified.
-        final Network n = mCellNetworkAgent.getNetwork();
+        final Network n = mCellAgent.getNetwork();
         final boolean hasConnectivity = true;
         doAsUid(Process.myUid() + 1, () -> mService.reportNetworkConnectivity(n, hasConnectivity));
 
@@ -12101,11 +12091,11 @@
         final NetworkRequest request = new NetworkRequest.Builder().build();
         final TestNetworkCallback networkCallback = new TestNetworkCallback();
         mCm.registerNetworkCallback(request, networkCallback);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         reset(mMockNetd);
-        mCellNetworkAgent.connect(false);
-        networkCallback.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        final int netId = mCellNetworkAgent.getNetwork().netId;
+        mCellAgent.connect(false);
+        networkCallback.expectAvailableCallbacksUnvalidated(mCellAgent);
+        final int netId = mCellAgent.getNetwork().netId;
 
         final String iface = "rmnet_data0";
         final InetAddress gateway = InetAddress.getByName("fe80::5678");
@@ -12122,8 +12112,8 @@
         lp.addRoute(direct);
         lp.addRoute(rio1);
         lp.addRoute(defaultRoute);
-        mCellNetworkAgent.sendLinkProperties(lp);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent, x -> x.getRoutes().size() == 3);
+        mCellAgent.sendLinkProperties(lp);
+        networkCallback.expectLinkPropertiesThat(mCellAgent, x -> x.getRoutes().size() == 3);
 
         assertRoutesAdded(netId, direct, rio1, defaultRoute);
         reset(mMockNetd);
@@ -12137,9 +12127,8 @@
         assertFalse(lp.getRoutes().contains(defaultRoute));
         assertTrue(lp.getRoutes().contains(defaultWithMtu));
 
-        mCellNetworkAgent.sendLinkProperties(lp);
-        networkCallback.expectLinkPropertiesThat(mCellNetworkAgent,
-                x -> x.getRoutes().contains(rio2));
+        mCellAgent.sendLinkProperties(lp);
+        networkCallback.expectLinkPropertiesThat(mCellAgent, x -> x.getRoutes().contains(rio2));
 
         assertRoutesRemoved(netId, rio1);
         assertRoutesAdded(netId, rio2);
@@ -12251,8 +12240,8 @@
     @Test
     public void testVpnUidRangesUpdate() throws Exception {
         // Set up a WiFi network without proxy.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         assertNull(mService.getProxyForNetwork(null));
         assertNull(mCm.getDefaultProxy());
 
@@ -12304,11 +12293,11 @@
         b5.expectBroadcast();
 
         // Proxy is added in WiFi(default network), setDefaultProxy will be called.
-        final LinkProperties wifiLp = mCm.getLinkProperties(mWiFiNetworkAgent.getNetwork());
+        final LinkProperties wifiLp = mCm.getLinkProperties(mWiFiAgent.getNetwork());
         assertNotNull(wifiLp);
         final ExpectedBroadcast b6 = expectProxyChangeAction(testProxyInfo);
         wifiLp.setHttpProxy(testProxyInfo);
-        mWiFiNetworkAgent.sendLinkProperties(wifiLp);
+        mWiFiAgent.sendLinkProperties(wifiLp);
         waitForIdle();
         b6.expectBroadcast();
     }
@@ -12316,8 +12305,8 @@
     @Test
     public void testProxyBroadcastWillBeSentWhenVpnHasProxyAndConnects() throws Exception {
         // Set up a WiFi network without proxy.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         assertNull(mService.getProxyForNetwork(null));
         assertNull(mCm.getDefaultProxy());
 
@@ -12351,22 +12340,22 @@
     public void testProxyBroadcastWillBeSentWhenTheProxyOfNonDefaultNetworkHasChanged()
             throws Exception {
         // Set up a CELLULAR network without proxy.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
         assertNull(mService.getProxyForNetwork(null));
         assertNull(mCm.getDefaultProxy());
         // CELLULAR network should be the default network.
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
 
         // Set up a WiFi network without proxy.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         assertNull(mService.getProxyForNetwork(null));
         assertNull(mCm.getDefaultProxy());
         // WiFi network should be the default network.
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetwork());
         // CELLULAR network is not the default network.
-        assertNotEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertNotEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
 
         // CELLULAR network is not the system default network, but it might be a per-app default
         // network. The proxy broadcast should be sent once its proxy has changed.
@@ -12375,7 +12364,7 @@
         final ProxyInfo testProxyInfo = ProxyInfo.buildDirectProxy("test", 8888);
         final ExpectedBroadcast b = registerPacProxyBroadcast();
         cellularLp.setHttpProxy(testProxyInfo);
-        mCellNetworkAgent.sendLinkProperties(cellularLp);
+        mCellAgent.sendLinkProperties(cellularLp);
         b.expectBroadcast();
     }
 
@@ -12404,66 +12393,64 @@
                 .build();
         mCm.registerNetworkCallback(allNetworksRequest, allNetworksCb);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true /* validated */);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true /* validated */);
 
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        allNetworksCb.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        allNetworksCb.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true /* validated */);
 
-        mDefaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        mDefaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
         // While the default callback doesn't see the network before it's validated, the listen
         // sees the network come up and validate later
-        allNetworksCb.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
-        allNetworksCb.expectLosing(mCellNetworkAgent);
-        allNetworksCb.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiNetworkAgent);
-        allNetworksCb.expect(CallbackEntry.LOST, mCellNetworkAgent,
-                TEST_LINGER_DELAY_MS * 2);
+        allNetworksCb.expectAvailableCallbacksUnvalidated(mWiFiAgent);
+        allNetworksCb.expectLosing(mCellAgent);
+        allNetworksCb.expectCapabilitiesWith(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+        allNetworksCb.expect(LOST, mCellAgent, TEST_LINGER_DELAY_MS * 2);
 
         // The cell network has disconnected (see LOST above) because it was outscored and
         // had no requests (see setAlwaysOnNetworks(false) above)
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         final NetworkScore score = new NetworkScore.Builder().setLegacyInt(30).build();
-        mCellNetworkAgent.setScore(score);
-        mCellNetworkAgent.connect(false /* validated */);
+        mCellAgent.setScore(score);
+        mCellAgent.connect(false /* validated */);
 
         // The cell network gets torn down right away.
-        allNetworksCb.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
-        allNetworksCb.expect(CallbackEntry.LOST, mCellNetworkAgent,
-                TEST_NASCENT_DELAY_MS * 2);
+        allNetworksCb.expectAvailableCallbacksUnvalidated(mCellAgent);
+        allNetworksCb.expect(LOST, mCellAgent, TEST_NASCENT_DELAY_MS * 2);
         allNetworksCb.assertNoCallback();
 
         // Now create a cell network with KEEP_CONNECTED_FOR_HANDOVER and make sure it's
         // not disconnected immediately when outscored.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
         final NetworkScore scoreKeepup = new NetworkScore.Builder().setLegacyInt(30)
                 .setKeepConnectedReason(KEEP_CONNECTED_FOR_HANDOVER).build();
-        mCellNetworkAgent.setScore(scoreKeepup);
-        mCellNetworkAgent.connect(true /* validated */);
+        mCellAgent.setScore(scoreKeepup);
+        mCellAgent.connect(true /* validated */);
 
-        allNetworksCb.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        allNetworksCb.expectAvailableThenValidatedCallbacks(mCellAgent);
         mDefaultNetworkCallback.assertNoCallback();
 
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
 
-        allNetworksCb.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        allNetworksCb.expect(LOST, mWiFiAgent);
+        mDefaultNetworkCallback.expect(LOST, mWiFiAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
 
         // Reconnect a WiFi network and make sure the cell network is still not torn down.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true /* validated */);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true /* validated */);
 
-        allNetworksCb.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        allNetworksCb.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        mDefaultNetworkCallback.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
 
         // Now remove the reason to keep connected and make sure the network lingers and is
         // torn down.
-        mCellNetworkAgent.setScore(new NetworkScore.Builder().setLegacyInt(30).build());
-        allNetworksCb.expectLosing(mCellNetworkAgent, TEST_NASCENT_DELAY_MS * 2);
-        allNetworksCb.expect(CallbackEntry.LOST, mCellNetworkAgent, TEST_LINGER_DELAY_MS * 2);
+        mCellAgent.setScore(new NetworkScore.Builder().setLegacyInt(30).build());
+        allNetworksCb.expectLosing(mCellAgent, TEST_NASCENT_DELAY_MS * 2);
+        allNetworksCb.expect(LOST, mCellAgent, TEST_LINGER_DELAY_MS * 2);
         mDefaultNetworkCallback.assertNoCallback();
 
         mCm.unregisterNetworkCallback(allNetworksCb);
@@ -12481,21 +12468,21 @@
             mFilter = mock(QosFilter.class);
 
             // Ensure the network is disconnected before anything else occurs
-            assertNull(mCellNetworkAgent);
+            assertNull(mCellAgent);
 
-            mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-            mCellNetworkAgent.connect(true);
+            mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+            mCellAgent.connect(true);
 
             verifyActiveNetwork(TRANSPORT_CELLULAR);
             waitForIdle();
-            final Network network = mCellNetworkAgent.getNetwork();
+            final Network network = mCellAgent.getNetwork();
 
             final Pair<IQosCallback, IBinder> pair = createQosCallback();
             mCallback = pair.first;
 
             doReturn(network).when(mFilter).getNetwork();
             doReturn(QosCallbackException.EX_TYPE_FILTER_NONE).when(mFilter).validate();
-            mAgentWrapper = mCellNetworkAgent;
+            mAgentWrapper = mCellAgent;
         }
 
         void registerQosCallback(@NonNull final QosFilter filter,
@@ -13085,12 +13072,12 @@
             // Corresponds to a metered cellular network. Will be used for the default network.
             case TRANSPORT_CELLULAR:
                 if (!connectAgent) {
-                    mCellNetworkAgent.disconnect();
+                    mCellAgent.disconnect();
                     break;
                 }
-                mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-                mCellNetworkAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
-                mCellNetworkAgent.connect(true);
+                mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+                mCellAgent.removeCapability(NET_CAPABILITY_NOT_METERED);
+                mCellAgent.connect(true);
                 break;
             // Corresponds to a restricted ethernet network with OEM_PAID/OEM_PRIVATE.
             case TRANSPORT_ETHERNET:
@@ -13103,12 +13090,12 @@
             // Corresponds to unmetered Wi-Fi.
             case TRANSPORT_WIFI:
                 if (!connectAgent) {
-                    mWiFiNetworkAgent.disconnect();
+                    mWiFiAgent.disconnect();
                     break;
                 }
-                mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-                mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-                mWiFiNetworkAgent.connect(true);
+                mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+                mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+                mWiFiAgent.connect(true);
                 break;
             default:
                 throw new AssertionError("Unsupported transport type passed in.");
@@ -13118,15 +13105,15 @@
     }
 
     private void startOemManagedNetwork(final boolean isOemPaid) throws Exception {
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.addCapability(
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.addCapability(
                 isOemPaid ? NET_CAPABILITY_OEM_PAID : NET_CAPABILITY_OEM_PRIVATE);
-        mEthernetNetworkAgent.removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
-        mEthernetNetworkAgent.connect(true);
+        mEthernetAgent.removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        mEthernetAgent.connect(true);
     }
 
     private void stopOemManagedNetwork() {
-        mEthernetNetworkAgent.disconnect();
+        mEthernetAgent.disconnect();
         waitForIdle();
     }
 
@@ -13359,7 +13346,7 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // Verify that the active network is correct
         verifyActiveNetwork(TRANSPORT_ETHERNET);
@@ -13380,16 +13367,16 @@
         assertTrue(mCm.isActiveNetworkMetered());
 
         // Connect to an unmetered restricted network that will only be available to the OEM pref.
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
-        mEthernetNetworkAgent.addCapability(NET_CAPABILITY_OEM_PAID);
-        mEthernetNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mEthernetNetworkAgent.removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
-        mEthernetNetworkAgent.connect(true);
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET);
+        mEthernetAgent.addCapability(NET_CAPABILITY_OEM_PAID);
+        mEthernetAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mEthernetAgent.removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
+        mEthernetAgent.connect(true);
         waitForIdle();
 
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         assertFalse(mCm.isActiveNetworkMetered());
         // default NCs will be unregistered in tearDown
@@ -13420,19 +13407,18 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // At this point with a restricted network used, the available callback should trigger.
-        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mEthernetNetworkAgent);
-        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mEthernetAgent);
+        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mEthernetAgent.getNetwork());
         otherUidDefaultCallback.assertNoCallback();
 
         // Now bring down the default network which should trigger a LOST callback.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
 
         // At this point, with no network is available, the lost callback should trigger
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
+        defaultNetworkCallback.expect(LOST, mEthernetAgent);
         otherUidDefaultCallback.assertNoCallback();
 
         // Confirm we can unregister without issues.
@@ -13465,12 +13451,11 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // At this point with a restricted network used, the available callback should trigger
-        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mEthernetNetworkAgent);
-        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mEthernetAgent);
+        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mEthernetAgent.getNetwork());
         otherUidDefaultCallback.assertNoCallback();
 
         // Now bring down the default network which should trigger a LOST callback.
@@ -13478,7 +13463,7 @@
         otherUidDefaultCallback.assertNoCallback();
 
         // At this point, with no network is available, the lost callback should trigger
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
+        defaultNetworkCallback.expect(LOST, mEthernetAgent);
         otherUidDefaultCallback.assertNoCallback();
 
         // Confirm we can unregister without issues.
@@ -13511,27 +13496,26 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // As this callback does not have access to the OEM_PAID network, it will not fire.
         defaultNetworkCallback.assertNoCallback();
         assertDefaultNetworkCapabilities(userId /* no networks */);
 
         // The other UID does have access, and gets a callback.
-        otherUidDefaultCallback.expectAvailableThenValidatedCallbacks(mEthernetNetworkAgent);
+        otherUidDefaultCallback.expectAvailableThenValidatedCallbacks(mEthernetAgent);
 
         // Bring up unrestricted cellular. This should now satisfy the default network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // At this point with an unrestricted network used, the available callback should trigger
         // The other UID is unaffected and remains on the paid network.
-        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(),
-                mCellNetworkAgent.getNetwork());
-        assertDefaultNetworkCapabilities(userId, mCellNetworkAgent);
+        defaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(defaultNetworkCallback.getLastAvailableNetwork(), mCellAgent.getNetwork());
+        assertDefaultNetworkCapabilities(userId, mCellAgent);
         otherUidDefaultCallback.assertNoCallback();
 
         // Now bring down the per-app network.
@@ -13540,13 +13524,13 @@
         // Since the callback didn't use the per-app network, only the other UID gets a callback.
         // Because the preference specifies no fallback, it does not switch to cellular.
         defaultNetworkCallback.assertNoCallback();
-        otherUidDefaultCallback.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
+        otherUidDefaultCallback.expect(LOST, mEthernetAgent);
 
         // Now bring down the default network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, false);
 
         // As this callback was tracking the default, this should now trigger.
-        defaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        defaultNetworkCallback.expect(LOST, mCellAgent);
         otherUidDefaultCallback.assertNoCallback();
 
         // Confirm we can unregister without issues.
@@ -13699,22 +13683,22 @@
         // Bring up metered cellular. This will satisfy the fallback network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Bring up unmetered Wi-Fi. This will satisfy NET_CAPABILITY_NOT_METERED.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mWiFiNetworkAgent.getNetwork().netId, 1 /* times */,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
+                mWiFiAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Disconnecting OEM_PAID should have no effect as it is lower in priority then unmetered.
@@ -13728,15 +13712,15 @@
         // Disconnecting unmetered should put PANS on lowest priority fallback request.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mWiFiNetworkAgent.getNetwork().netId, 0 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mWiFiAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
 
         // Disconnecting the fallback network should result in no connectivity.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 0 /* times */,
+                mCellAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
     }
 
@@ -13774,22 +13758,22 @@
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Bring up unmetered Wi-Fi. This will satisfy NET_CAPABILITY_NOT_METERED.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mWiFiNetworkAgent.getNetwork().netId, 1 /* times */,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
+                mWiFiAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Disconnecting unmetered should put PANS on OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
-                mWiFiNetworkAgent.getNetwork().netId, 0 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
+                mWiFiAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
 
         // Disconnecting OEM_PAID should result in no connectivity.
@@ -13797,7 +13781,7 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
-                mEthernetNetworkAgent.getNetwork().netId, 0 /* times */,
+                mEthernetAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
     }
 
@@ -13841,7 +13825,7 @@
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
@@ -13849,7 +13833,7 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
-                mEthernetNetworkAgent.getNetwork().netId, 0 /* times */,
+                mEthernetAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
     }
 
@@ -13893,7 +13877,7 @@
         // Bring up ethernet with OEM_PRIVATE. This will satisfy NET_CAPABILITY_OEM_PRIVATE.
         startOemManagedNetwork(false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mEthernetNetworkAgent.getNetwork().netId, 1 /* times */,
+                mEthernetAgent.getNetwork().netId, 1 /* times */,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
@@ -13901,7 +13885,7 @@
         stopOemManagedNetwork();
         verifySetOemNetworkPreferenceForPreference(uidRanges,
                 mService.mNoServiceNetwork.network.getNetId(), 1 /* times */,
-                mEthernetNetworkAgent.getNetwork().netId, 0 /* times */,
+                mEthernetAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
     }
 
@@ -13934,7 +13918,7 @@
         // Test that we correctly add the expected values for multiple users.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
                 false /* shouldDestroyNetwork */);
 
@@ -13942,7 +13926,7 @@
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, false);
         verifySetOemNetworkPreferenceForPreference(uidRanges,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 0 /* times */,
+                mCellAgent.getNetwork().netId, 0 /* times */,
                 true /* shouldDestroyNetwork */);
     }
 
@@ -13977,7 +13961,7 @@
         // Test that we correctly add the expected values for multiple users.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifySetOemNetworkPreferenceForPreference(uidRangesSingleUser,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
                 false /* shouldDestroyNetwork */);
 
@@ -13990,8 +13974,8 @@
 
         // Test that we correctly add values for all users and remove for the single user.
         verifySetOemNetworkPreferenceForPreference(uidRangesBothUsers, uidRangesSingleUser,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Send a broadcast indicating a user was removed.
@@ -14002,8 +13986,8 @@
 
         // Test that we correctly add values for the single user and remove for the all users.
         verifySetOemNetworkPreferenceForPreference(uidRangesSingleUser, uidRangesBothUsers,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
     }
 
@@ -14033,7 +14017,7 @@
         // Test that we correctly add the expected values for installed packages.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifySetOemNetworkPreferenceForPreference(uidRangesSinglePackage,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 OEM_PREF_ANY_NET_ID, 0 /* times */,
                 false /* shouldDestroyNetwork */);
 
@@ -14049,8 +14033,8 @@
 
         // Test the single package is removed and the combined packages are added.
         verifySetOemNetworkPreferenceForPreference(uidRangesAllPackages, uidRangesSinglePackage,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Set the system to no longer recognize the package to be installed
@@ -14063,8 +14047,8 @@
 
         // Test the combined packages are removed and the single package is added.
         verifySetOemNetworkPreferenceForPreference(uidRangesSinglePackage, uidRangesAllPackages,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
 
         // Set the system to change the installed package's uid
@@ -14080,8 +14064,8 @@
 
         // Test the original uid is removed and is replaced with the new uid.
         verifySetOemNetworkPreferenceForPreference(uidRangesReplacedPackage, uidRangesSinglePackage,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
-                mCellNetworkAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
+                mCellAgent.getNetwork().netId, 1 /* times */,
                 false /* shouldDestroyNetwork */);
     }
 
@@ -14106,32 +14090,32 @@
         // Bring up metered cellular. This will satisfy the fallback network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mCellNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mCellAgent.getNetwork());
 
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Bring up unmetered Wi-Fi. This will satisfy NET_CAPABILITY_NOT_METERED.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mWiFiNetworkAgent.getNetwork(),
-                mWiFiNetworkAgent.getNetwork());
+                mWiFiAgent.getNetwork(),
+                mWiFiAgent.getNetwork());
 
         // Disconnecting unmetered Wi-Fi will put the pref on OEM_PAID and fallback on cellular.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting cellular should keep OEM network on OEM_PAID and fallback will be null.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // Disconnecting OEM_PAID will put both on null as it is the last network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
@@ -14179,8 +14163,8 @@
         oemPaidFactory.register();
         oemPaidFactory.expectRequestAdd(); // Because nobody satisfies the request
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         // A network connected that satisfies the default internet request. For the OEM_PAID
         // preference, this is not as good as an OEM_PAID network, so even if the score of
@@ -14215,7 +14199,7 @@
         expectNoRequestChanged(internetFactory);
         internetFactory.assertRequestCountEquals(0);
 
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         // The network satisfying the default internet request has disconnected, so the
         // internetFactory sees the default request again. However there is a network with OEM_PAID
         // connected, so the 2nd OEM_PAID req is already satisfied, so the oemPaidFactory doesn't
@@ -14226,8 +14210,8 @@
         internetFactory.assertRequestCountEquals(1);
 
         // Cell connects again, still with score 50. Back to the previous state.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
         expectNoRequestChanged(oemPaidFactory);
         oemPaidFactory.assertRequestCountEquals(1);
         internetFactory.expectRequestRemove();
@@ -14239,18 +14223,18 @@
                 wifiCallback);
 
         // Now WiFi connects and it's unmetered, but it's weaker than cell.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.addCapability(NET_CAPABILITY_NOT_METERED);
-        mWiFiNetworkAgent.setScore(new NetworkScore.Builder().setLegacyInt(30).setExiting(true)
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.addCapability(NET_CAPABILITY_NOT_METERED);
+        mWiFiAgent.setScore(new NetworkScore.Builder().setLegacyInt(30).setExiting(true)
                 .build()); // Not the best Internet network, but unmetered
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent.connect(true);
 
         // The OEM_PAID preference prefers an unmetered network to an OEM_PAID network, so
         // the oemPaidFactory can't beat wifi no matter how high its score.
         oemPaidFactory.expectRequestRemove();
         expectNoRequestChanged(internetFactory);
 
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         // Now that the best internet network (cell, with its 50 score compared to 30 for WiFi
         // at this point), the default internet request is satisfied by a network worse than
         // the internetFactory announced, so it gets the request. However, there is still an
@@ -14281,32 +14265,32 @@
         // Bring up metered cellular. This will satisfy the fallback network but not the pref.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
+                mCellAgent.getNetwork(),
                 mService.mNoServiceNetwork.network());
 
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Bring up unmetered Wi-Fi. This will satisfy NET_CAPABILITY_NOT_METERED.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mWiFiNetworkAgent.getNetwork(),
-                mWiFiNetworkAgent.getNetwork());
+                mWiFiAgent.getNetwork(),
+                mWiFiAgent.getNetwork());
 
         // Disconnecting unmetered Wi-Fi will put the OEM pref on OEM_PAID and fallback on cellular.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting cellular should keep OEM network on OEM_PAID and fallback will be null.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
                 null,
-                mEthernetNetworkAgent.getNetwork());
+                mEthernetAgent.getNetwork());
 
         // Disconnecting OEM_PAID puts the fallback on null and the pref on the disconnected net.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
@@ -14339,32 +14323,32 @@
         // Bring up metered cellular. This will satisfy the fallback network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
+                mCellAgent.getNetwork(),
                 mService.mNoServiceNetwork.network());
 
         // Bring up ethernet with OEM_PAID. This will satisfy NET_CAPABILITY_OEM_PAID.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Bring up unmetered Wi-Fi. The OEM network shouldn't change, the fallback will take Wi-Fi.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mWiFiNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mWiFiAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting unmetered Wi-Fi shouldn't change the OEM network with fallback on cellular.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting OEM_PAID will keep the fallback on cellular and nothing for OEM_PAID.
         // OEM_PAID_ONLY not supporting a fallback now uses the disconnected network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_ETHERNET, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
+                mCellAgent.getNetwork(),
                 mService.mNoServiceNetwork.network());
 
         // Disconnecting cellular will put the fallback on null and the pref on disconnected.
@@ -14398,32 +14382,32 @@
         // Bring up metered cellular. This will satisfy the fallback network.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
+                mCellAgent.getNetwork(),
                 mService.mNoServiceNetwork.network());
 
         // Bring up ethernet with OEM_PRIVATE. This will satisfy NET_CAPABILITY_OEM_PRIVATE.
         startOemManagedNetwork(false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Bring up unmetered Wi-Fi. The OEM network shouldn't change, the fallback will take Wi-Fi.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, true);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mWiFiNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mWiFiAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting unmetered Wi-Fi shouldn't change the OEM network with fallback on cellular.
         setOemNetworkPreferenceAgentConnected(TRANSPORT_WIFI, false);
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
-                mEthernetNetworkAgent.getNetwork());
+                mCellAgent.getNetwork(),
+                mEthernetAgent.getNetwork());
 
         // Disconnecting OEM_PRIVATE will keep the fallback on cellular.
         // OEM_PRIVATE_ONLY not supporting a fallback now uses to the disconnected network.
         stopOemManagedNetwork();
         verifyMultipleDefaultNetworksTracksCorrectly(expectedOemPrefRequestSize,
-                mCellNetworkAgent.getNetwork(),
+                mCellAgent.getNetwork(),
                 mService.mNoServiceNetwork.network());
 
         // Disconnecting cellular will put the fallback on null and pref on disconnected.
@@ -14444,13 +14428,13 @@
 
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
 
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
-        mSystemDefaultNetworkCallback.expectCapabilitiesThat(mCellNetworkAgent, nc ->
+        mCellAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
+        mSystemDefaultNetworkCallback.expectCapabilitiesThat(mCellAgent, nc ->
                 nc.hasCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED));
-        mDefaultNetworkCallback.expectCapabilitiesThat(mCellNetworkAgent, nc ->
+        mDefaultNetworkCallback.expectCapabilitiesThat(mCellAgent, nc ->
                 nc.hasCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED));
 
         // default callbacks will be unregistered in tearDown
@@ -14505,29 +14489,29 @@
         final TestNetworkCallback cellCb = new TestNetworkCallback();
         mCm.requestNetwork(new NetworkRequest.Builder().addCapability(NET_CAPABILITY_MMS).build(),
                 cellCb);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp, cellNcTemplate);
-        mCellNetworkAgent.connect(true);
-        cellCb.expectAvailableCallbacksUnvalidated(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp, cellNcTemplate);
+        mCellAgent.connect(true);
+        cellCb.expectAvailableCallbacksUnvalidated(mCellAgent);
         List<NetworkStateSnapshot> snapshots = mCm.getAllNetworkStateSnapshots();
         assertLength(1, snapshots);
 
         // Compose the expected cellular snapshot for verification.
         final NetworkCapabilities cellNc =
-                mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork());
+                mCm.getNetworkCapabilities(mCellAgent.getNetwork());
         final NetworkStateSnapshot cellSnapshot = new NetworkStateSnapshot(
-                mCellNetworkAgent.getNetwork(), cellNc, cellLp,
+                mCellAgent.getNetwork(), cellNc, cellLp,
                 null, ConnectivityManager.TYPE_MOBILE);
         assertEquals(cellSnapshot, snapshots.get(0));
 
         // Connect wifi and verify the snapshots.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
         waitForIdle();
         // Compose the expected wifi snapshot for verification.
         final NetworkCapabilities wifiNc =
-                mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork());
+                mCm.getNetworkCapabilities(mWiFiAgent.getNetwork());
         final NetworkStateSnapshot wifiSnapshot = new NetworkStateSnapshot(
-                mWiFiNetworkAgent.getNetwork(), wifiNc, new LinkProperties(), null,
+                mWiFiAgent.getNetwork(), wifiNc, new LinkProperties(), null,
                 ConnectivityManager.TYPE_WIFI);
 
         snapshots = mCm.getAllNetworkStateSnapshots();
@@ -14535,33 +14519,33 @@
         assertContainsAll(snapshots, cellSnapshot, wifiSnapshot);
 
         // Set cellular as suspended, verify the snapshots will contain suspended networks.
-        mCellNetworkAgent.suspend();
+        mCellAgent.suspend();
         waitForIdle();
         final NetworkCapabilities cellSuspendedNc =
-                mCm.getNetworkCapabilities(mCellNetworkAgent.getNetwork());
+                mCm.getNetworkCapabilities(mCellAgent.getNetwork());
         assertFalse(cellSuspendedNc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED));
         final NetworkStateSnapshot cellSuspendedSnapshot = new NetworkStateSnapshot(
-                mCellNetworkAgent.getNetwork(), cellSuspendedNc, cellLp,
+                mCellAgent.getNetwork(), cellSuspendedNc, cellLp,
                 null, ConnectivityManager.TYPE_MOBILE);
         snapshots = mCm.getAllNetworkStateSnapshots();
         assertLength(2, snapshots);
         assertContainsAll(snapshots, cellSuspendedSnapshot, wifiSnapshot);
 
         // Disconnect wifi, verify the snapshots contain only cellular.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         waitForIdle();
         snapshots = mCm.getAllNetworkStateSnapshots();
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetwork());
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetwork());
         assertLength(1, snapshots);
         assertEquals(cellSuspendedSnapshot, snapshots.get(0));
 
-        mCellNetworkAgent.resume();
+        mCellAgent.resume();
         waitForIdle();
         snapshots = mCm.getAllNetworkStateSnapshots();
         assertLength(1, snapshots);
         assertEquals(cellSnapshot, snapshots.get(0));
 
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         waitForIdle();
         verifyNoNetwork();
         mCm.unregisterNetworkCallback(cellCb);
@@ -14632,35 +14616,35 @@
                 new NetworkRequest.Builder().addCapability(NET_CAPABILITY_TRUSTED).build(),
                 bestMatchingCb, mCsHandlerThread.getThreadHandler());
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        bestMatchingCb.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        bestMatchingCb.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        bestMatchingCb.expectAvailableDoubleValidatedCallbacks(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        bestMatchingCb.expectAvailableDoubleValidatedCallbacks(mWiFiAgent);
 
         // Change something on cellular to trigger capabilities changed, since the callback
         // only cares about the best network, verify it received nothing from cellular.
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
+        mCellAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
         bestMatchingCb.assertNoCallback();
 
         // Make cellular the best network again, verify the callback now tracks cellular.
-        mWiFiNetworkAgent.adjustScore(-50);
-        bestMatchingCb.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mWiFiAgent.adjustScore(-50);
+        bestMatchingCb.expectAvailableCallbacksValidated(mCellAgent);
 
         // Make cellular temporary non-trusted, which will not satisfying the request.
         // Verify the callback switch from/to the other network accordingly.
-        mCellNetworkAgent.removeCapability(NET_CAPABILITY_TRUSTED);
-        bestMatchingCb.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_TRUSTED);
-        bestMatchingCb.expectAvailableDoubleValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.removeCapability(NET_CAPABILITY_TRUSTED);
+        bestMatchingCb.expectAvailableCallbacksValidated(mWiFiAgent);
+        mCellAgent.addCapability(NET_CAPABILITY_TRUSTED);
+        bestMatchingCb.expectAvailableDoubleValidatedCallbacks(mCellAgent);
 
         // Verify the callback doesn't care about wifi disconnect.
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         bestMatchingCb.assertNoCallback();
-        mCellNetworkAgent.disconnect();
-        bestMatchingCb.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        bestMatchingCb.expect(LOST, mCellAgent);
     }
 
     private UidRangeParcel[] uidRangeFor(final UserHandle handle) {
@@ -14757,18 +14741,17 @@
             TestNetworkCallback disAllowProfileDefaultNetworkCallback) throws Exception {
         final InOrder inOrder = inOrder(mMockNetd);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        profileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        profileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         if (disAllowProfileDefaultNetworkCallback != null) {
-            disAllowProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(
-                    mCellNetworkAgent);
+            disAllowProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         }
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
 
         final TestNetworkAgentWrapper workAgent =
                 makeEnterpriseNetworkAgent(profileNetworkPreference.getPreferenceEnterpriseId());
@@ -14795,7 +14778,7 @@
             // system default is not handled specially, the rules are always active as long as
             // a preference is set.
             inOrder.verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                    mCellNetworkAgent.getNetwork().netId,
+                    mCellAgent.getNetwork().netId,
                     uidRangeFor(testHandle, profileNetworkPreference),
                     PREFERENCE_ORDER_PROFILE));
         }
@@ -14805,7 +14788,7 @@
         if (allowFallback && !connectWorkProfileAgentAhead) {
             assertNoCallbacks(profileDefaultNetworkCallback);
         } else if (!connectWorkProfileAgentAhead) {
-            profileDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+            profileDefaultNetworkCallback.expect(LOST, mCellAgent);
             if (disAllowProfileDefaultNetworkCallback != null) {
                 assertNoCallbacks(disAllowProfileDefaultNetworkCallback);
             }
@@ -14830,7 +14813,7 @@
 
         if (allowFallback && !connectWorkProfileAgentAhead) {
             inOrder.verify(mMockNetd).networkRemoveUidRangesParcel(new NativeUidRangeConfig(
-                    mCellNetworkAgent.getNetwork().netId,
+                    mCellAgent.getNetwork().netId,
                     uidRangeFor(testHandle, profileNetworkPreference),
                     PREFERENCE_ORDER_PROFILE));
         }
@@ -14860,13 +14843,13 @@
 
         // Conversely, change a capability on the system-wide default network and make sure
         // that only the apps outside of the work profile receive the callbacks.
-        mCellNetworkAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
-        mSystemDefaultNetworkCallback.expectCapabilitiesThat(mCellNetworkAgent, nc ->
+        mCellAgent.addCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED);
+        mSystemDefaultNetworkCallback.expectCapabilitiesThat(mCellAgent, nc ->
                 nc.hasCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED));
-        mDefaultNetworkCallback.expectCapabilitiesThat(mCellNetworkAgent, nc ->
+        mDefaultNetworkCallback.expectCapabilitiesThat(mCellAgent, nc ->
                 nc.hasCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED));
         if (disAllowProfileDefaultNetworkCallback != null) {
-            disAllowProfileDefaultNetworkCallback.expectCapabilitiesThat(mCellNetworkAgent, nc ->
+            disAllowProfileDefaultNetworkCallback.expectCapabilitiesThat(mCellAgent, nc ->
                     nc.hasCapability(NET_CAPABILITY_TEMPORARILY_NOT_METERED));
         }
         profileDefaultNetworkCallback.assertNoCallback();
@@ -14874,35 +14857,33 @@
         // Disconnect and reconnect the system-wide default network and make sure that the
         // apps on this network see the appropriate callbacks, and the app on the work profile
         // doesn't because it continues to use the enterprise network.
-        mCellNetworkAgent.disconnect();
-        mSystemDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        mSystemDefaultNetworkCallback.expect(LOST, mCellAgent);
+        mDefaultNetworkCallback.expect(LOST, mCellAgent);
         if (disAllowProfileDefaultNetworkCallback != null) {
-            disAllowProfileDefaultNetworkCallback.expect(
-                    CallbackEntry.LOST, mCellNetworkAgent);
+            disAllowProfileDefaultNetworkCallback.expect(LOST, mCellAgent);
         }
         profileDefaultNetworkCallback.assertNoCallback();
-        inOrder.verify(mMockNetd).networkDestroy(mCellNetworkAgent.getNetwork().netId);
+        inOrder.verify(mMockNetd).networkDestroy(mCellAgent.getNetwork().netId);
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         if (disAllowProfileDefaultNetworkCallback != null) {
-            disAllowProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(
-                    mCellNetworkAgent);
+            disAllowProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         }
         profileDefaultNetworkCallback.assertNoCallback();
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
 
         // When the agent disconnects, test that the app on the work profile falls back to the
         // default network.
         workAgent.disconnect();
-        profileDefaultNetworkCallback.expect(CallbackEntry.LOST, workAgent);
+        profileDefaultNetworkCallback.expect(LOST, workAgent);
         if (allowFallback) {
-            profileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+            profileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
             if (disAllowProfileDefaultNetworkCallback != null) {
                 assertNoCallbacks(disAllowProfileDefaultNetworkCallback);
             }
@@ -14910,27 +14891,26 @@
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback);
         if (allowFallback) {
             inOrder.verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                    mCellNetworkAgent.getNetwork().netId,
+                    mCellAgent.getNetwork().netId,
                     uidRangeFor(testHandle, profileNetworkPreference),
                     PREFERENCE_ORDER_PROFILE));
         }
         inOrder.verify(mMockNetd).networkDestroy(workAgent.getNetwork().netId);
 
-        mCellNetworkAgent.disconnect();
-        mSystemDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        mSystemDefaultNetworkCallback.expect(LOST, mCellAgent);
+        mDefaultNetworkCallback.expect(LOST, mCellAgent);
         if (disAllowProfileDefaultNetworkCallback != null) {
-            disAllowProfileDefaultNetworkCallback.expect(
-                    CallbackEntry.LOST, mCellNetworkAgent);
+            disAllowProfileDefaultNetworkCallback.expect(LOST, mCellAgent);
         }
         if (allowFallback) {
-            profileDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
+            profileDefaultNetworkCallback.expect(LOST, mCellAgent);
         }
 
         // Waiting for the handler to be idle before checking for networkDestroy is necessary
         // here because ConnectivityService calls onLost before the network is fully torn down.
         waitForIdle();
-        inOrder.verify(mMockNetd).networkDestroy(mCellNetworkAgent.getNetwork().netId);
+        inOrder.verify(mMockNetd).networkDestroy(mCellAgent.getNetwork().netId);
 
         // If the control comes here, callbacks seem to behave correctly in the presence of
         // a default network when the enterprise network goes up and down. Now, make sure they
@@ -14967,7 +14947,7 @@
         // When the agent disconnects, test that the app on the work profile fall back to the
         // default network.
         workAgent2.disconnect();
-        profileDefaultNetworkCallback.expect(CallbackEntry.LOST, workAgent2);
+        profileDefaultNetworkCallback.expect(LOST, workAgent2);
         if (disAllowProfileDefaultNetworkCallback != null) {
             assertNoCallbacks(disAllowProfileDefaultNetworkCallback);
         }
@@ -15313,23 +15293,23 @@
         registerDefaultNetworkCallbackAsUid(appCb3, testWorkProfileAppUid3);
 
         // Connect both a regular cell agent and an enterprise network first.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         final TestNetworkAgentWrapper workAgent1 = makeEnterpriseNetworkAgent(NET_ENTERPRISE_ID_1);
         final TestNetworkAgentWrapper workAgent2 = makeEnterpriseNetworkAgent(NET_ENTERPRISE_ID_2);
         workAgent1.connect(true);
         workAgent2.connect(true);
 
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        appCb1.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb2.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb3.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        appCb1.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb2.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb3.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
                 workAgent1.getNetwork().netId, INetd.PERMISSION_SYSTEM));
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
@@ -15396,8 +15376,8 @@
 
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback);
         appCb3.expectAvailableCallbacksValidated(workAgent1);
-        appCb2.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        appCb1.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        appCb2.expectAvailableCallbacksValidated(mCellAgent);
+        appCb1.expectAvailableCallbacksValidated(mCellAgent);
 
         // Set the preferences for testHandle to default.
         ProfileNetworkPreference.Builder profileNetworkPreferenceBuilder =
@@ -15414,9 +15394,9 @@
                 PREFERENCE_ORDER_PROFILE));
 
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback, appCb1, appCb2);
-        appCb3.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        appCb3.expectAvailableCallbacksValidated(mCellAgent);
         workAgent2.disconnect();
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
 
         mCm.unregisterNetworkCallback(appCb1);
         mCm.unregisterNetworkCallback(appCb2);
@@ -15461,8 +15441,8 @@
         registerDefaultNetworkCallbackAsUid(appCb5, testWorkProfileAppUid5);
 
         // Connect both a regular cell agent and an enterprise network first.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         final TestNetworkAgentWrapper workAgent1 = makeEnterpriseNetworkAgent(NET_ENTERPRISE_ID_1);
         final TestNetworkAgentWrapper workAgent2 = makeEnterpriseNetworkAgent(NET_ENTERPRISE_ID_2);
@@ -15476,16 +15456,16 @@
         workAgent4.connect(true);
         workAgent5.connect(true);
 
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb1.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb2.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb3.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb4.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        appCb5.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb1.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb2.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb3.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb4.expectAvailableThenValidatedCallbacks(mCellAgent);
+        appCb5.expectAvailableThenValidatedCallbacks(mCellAgent);
 
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
                 workAgent1.getNetwork().netId, INetd.PERMISSION_SYSTEM));
         verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
@@ -15577,36 +15557,36 @@
         workAgent4.disconnect();
         workAgent5.disconnect();
 
-        appCb1.expect(CallbackEntry.LOST, workAgent1);
-        appCb2.expect(CallbackEntry.LOST, workAgent2);
-        appCb3.expect(CallbackEntry.LOST, workAgent3);
-        appCb4.expect(CallbackEntry.LOST, workAgent4);
-        appCb5.expect(CallbackEntry.LOST, workAgent5);
+        appCb1.expect(LOST, workAgent1);
+        appCb2.expect(LOST, workAgent2);
+        appCb3.expect(LOST, workAgent3);
+        appCb4.expect(LOST, workAgent4);
+        appCb5.expect(LOST, workAgent5);
 
-        appCb1.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        appCb1.expectAvailableCallbacksValidated(mCellAgent);
         appCb2.assertNoCallback();
-        appCb3.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        appCb3.expectAvailableCallbacksValidated(mCellAgent);
         appCb4.assertNoCallback();
-        appCb5.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        appCb5.expectAvailableCallbacksValidated(mCellAgent);
 
         verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId,
+                mCellAgent.getNetwork().netId,
                 uidRangeFor(testHandle, profileNetworkPreferenceBuilder1.build()),
                 PREFERENCE_ORDER_PROFILE));
         verify(mMockNetd, never()).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId,
+                mCellAgent.getNetwork().netId,
                 uidRangeFor(testHandle, profileNetworkPreferenceBuilder2.build()),
                 PREFERENCE_ORDER_PROFILE));
         verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId,
+                mCellAgent.getNetwork().netId,
                 uidRangeFor(testHandle, profileNetworkPreferenceBuilder3.build()),
                 PREFERENCE_ORDER_PROFILE));
         verify(mMockNetd, never()).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId,
+                mCellAgent.getNetwork().netId,
                 uidRangeFor(testHandle, profileNetworkPreferenceBuilder4.build()),
                 PREFERENCE_ORDER_PROFILE));
         verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId,
+                mCellAgent.getNetwork().netId,
                 uidRangeFor(testHandle, profileNetworkPreferenceBuilder5.build()),
                 PREFERENCE_ORDER_PROFILE));
 
@@ -15624,9 +15604,9 @@
         listener.expectOnComplete();
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback, appCb1, appCb3,
                 appCb5);
-        appCb2.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        appCb4.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        mCellNetworkAgent.disconnect();
+        appCb2.expectAvailableCallbacksValidated(mCellAgent);
+        appCb4.expectAvailableCallbacksValidated(mCellAgent);
+        mCellAgent.disconnect();
 
         mCm.unregisterNetworkCallback(appCb1);
         mCm.unregisterNetworkCallback(appCb2);
@@ -15646,8 +15626,8 @@
         final UserHandle testHandle = setupEnterpriseNetwork();
 
         // Connect both a regular cell agent and an enterprise network first.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         final TestNetworkAgentWrapper workAgent = makeEnterpriseNetworkAgent();
         workAgent.connect(true);
@@ -15657,27 +15637,27 @@
                 r -> r.run(), listener);
         listener.expectOnComplete();
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
         inOrder.verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
                 workAgent.getNetwork().netId, uidRangeFor(testHandle), PREFERENCE_ORDER_PROFILE));
 
         registerDefaultNetworkCallbacks();
 
-        mSystemDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(workAgent);
 
         mCm.setProfileNetworkPreference(testHandle, PROFILE_NETWORK_PREFERENCE_DEFAULT,
                 r -> r.run(), listener);
         listener.expectOnComplete();
 
-        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback);
         inOrder.verify(mMockNetd).networkRemoveUidRangesParcel(new NativeUidRangeConfig(
                 workAgent.getNetwork().netId, uidRangeFor(testHandle), PREFERENCE_ORDER_PROFILE));
 
         workAgent.disconnect();
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
 
         // Callbacks will be unregistered by tearDown()
     }
@@ -15699,18 +15679,18 @@
         registerDefaultNetworkCallbackAsUid(app4Cb, testWorkProfileAppUid4);
 
         // Connect both a regular cell agent and an enterprise network first.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         final TestNetworkAgentWrapper workAgent = makeEnterpriseNetworkAgent();
         workAgent.connect(true);
 
-        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        app4Cb.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mSystemDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        app4Cb.expectAvailableThenValidatedCallbacks(mCellAgent);
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
                 workAgent.getNetwork().netId, INetd.PERMISSION_SYSTEM));
 
@@ -15741,12 +15721,12 @@
         inOrder.verify(mMockNetd).networkRemoveUidRangesParcel(new NativeUidRangeConfig(
                 workAgent.getNetwork().netId, uidRangeFor(testHandle2), PREFERENCE_ORDER_PROFILE));
 
-        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         assertNoCallbacks(mSystemDefaultNetworkCallback, mDefaultNetworkCallback,
                 app4Cb);
 
         workAgent.disconnect();
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
 
         mCm.unregisterNetworkCallback(app4Cb);
         // Other callbacks will be unregistered by tearDown()
@@ -15757,17 +15737,17 @@
         final InOrder inOrder = inOrder(mMockNetd);
         final UserHandle testHandle = setupEnterpriseNetwork();
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
 
         final TestOnCompleteListener listener = new TestOnCompleteListener();
         mCm.setProfileNetworkPreference(testHandle, PROFILE_NETWORK_PREFERENCE_ENTERPRISE,
                 r -> r.run(), listener);
         listener.expectOnComplete();
         inOrder.verify(mMockNetd).networkCreate(nativeNetworkConfigPhysical(
-                mCellNetworkAgent.getNetwork().netId, INetd.PERMISSION_NONE));
+                mCellAgent.getNetwork().netId, INetd.PERMISSION_NONE));
         inOrder.verify(mMockNetd).networkAddUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId, uidRangeFor(testHandle),
+                mCellAgent.getNetwork().netId, uidRangeFor(testHandle),
                 PREFERENCE_ORDER_PROFILE));
 
         final Intent removedIntent = new Intent(ACTION_USER_REMOVED);
@@ -15775,10 +15755,208 @@
         processBroadcast(removedIntent);
 
         inOrder.verify(mMockNetd).networkRemoveUidRangesParcel(new NativeUidRangeConfig(
-                mCellNetworkAgent.getNetwork().netId, uidRangeFor(testHandle),
+                mCellAgent.getNetwork().netId, uidRangeFor(testHandle),
                 PREFERENCE_ORDER_PROFILE));
     }
 
+    @Test
+    public void testProfileNetworkPreferenceBlocking_addUser() throws Exception {
+        final InOrder inOrder = inOrder(mMockNetd);
+        doReturn(asList(PRIMARY_USER_HANDLE)).when(mUserManager).getUserHandles(anyBoolean());
+
+        // Only one network
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+
+        // Verify uid ranges 0~99999 are allowed
+        final ArraySet<UidRange> allowedRanges = new ArraySet<>();
+        allowedRanges.add(PRIMARY_UIDRANGE);
+        final NativeUidRangeConfig config1User = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                toUidRangeStableParcels(allowedRanges),
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[] { config1User });
+
+        doReturn(asList(PRIMARY_USER_HANDLE, SECONDARY_USER_HANDLE))
+                .when(mUserManager).getUserHandles(anyBoolean());
+        final Intent addedIntent = new Intent(ACTION_USER_ADDED);
+        addedIntent.putExtra(Intent.EXTRA_USER, UserHandle.of(SECONDARY_USER));
+        processBroadcast(addedIntent);
+
+        // Make sure the allow list has been updated.
+        allowedRanges.add(UidRange.createForUser(SECONDARY_USER_HANDLE));
+        final NativeUidRangeConfig config2Users = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                toUidRangeStableParcels(allowedRanges),
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[] { config2Users });
+    }
+
+    @Test
+    public void testProfileNetworkPreferenceBlocking_changePreference() throws Exception {
+        final InOrder inOrder = inOrder(mMockNetd);
+        final UserHandle testHandle = setupEnterpriseNetwork();
+        doReturn(asList(PRIMARY_USER_HANDLE, testHandle))
+                .when(mUserManager).getUserHandles(anyBoolean());
+
+        // Start with 1 default network and 1 enterprise network, both networks should
+        // not be restricted since the blocking preference is not set yet.
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+
+        // Verify uid ranges 0~99999, 200000~299999 are all allowed for cellular.
+        final UidRange profileUidRange =
+                UidRange.createForUser(UserHandle.of(TEST_WORK_PROFILE_USER_ID));
+        ArraySet<UidRange> allowedAllUidRanges = new ArraySet<>();
+        allowedAllUidRanges.add(PRIMARY_UIDRANGE);
+        allowedAllUidRanges.add(profileUidRange);
+        final UidRangeParcel[] allowAllUidRangesParcel = toUidRangeStableParcels(
+                allowedAllUidRanges);
+        final NativeUidRangeConfig cellAllAllowedConfig = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                allowAllUidRangesParcel,
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(
+                new NativeUidRangeConfig[]{cellAllAllowedConfig});
+
+        // Verify the same uid ranges are also applied for enterprise network.
+        final TestNetworkAgentWrapper enterpriseAgent = makeEnterpriseNetworkAgent(
+                NET_ENTERPRISE_ID_1);
+        enterpriseAgent.connect(true);
+        final NativeUidRangeConfig enterpriseAllAllowedConfig = new NativeUidRangeConfig(
+                enterpriseAgent.getNetwork().netId,
+                allowAllUidRangesParcel,
+                0 /* subPriority */);
+        // Network agents are stored in an ArraySet which does not guarantee the order and
+        // making the order of the list undeterministic. Thus, verify this in order insensitive way.
+        final ArgumentCaptor<NativeUidRangeConfig[]> configsCaptor = ArgumentCaptor.forClass(
+                NativeUidRangeConfig[].class);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(configsCaptor.capture());
+        assertContainsAll(List.of(configsCaptor.getValue()),
+                List.of(cellAllAllowedConfig, enterpriseAllAllowedConfig));
+
+        // Setup profile preference which only applies to test app uid on the managed profile.
+        ProfileNetworkPreference.Builder prefBuilder = new ProfileNetworkPreference.Builder();
+        prefBuilder.setPreference(PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING)
+                .setIncludedUids(new int[]{testHandle.getUid(TEST_WORK_PROFILE_APP_UID)})
+                .setPreferenceEnterpriseId(NET_ENTERPRISE_ID_1);
+        final TestOnCompleteListener listener = new TestOnCompleteListener();
+        mCm.setProfileNetworkPreferences(testHandle,
+                List.of(prefBuilder.build()),
+                r -> r.run(), listener);
+        listener.expectOnComplete();
+
+        // Verify Netd is called for the preferences changed.
+        // Cell: 0~99999, 200000~TEST_APP_UID-1, TEST_APP_UID+1~299999
+        // Enterprise: 0~99999, 200000~299999
+        final ArraySet<UidRange> excludeAppRanges = new ArraySet<>();
+        excludeAppRanges.add(PRIMARY_UIDRANGE);
+        excludeAppRanges.addAll(UidRangeUtils.removeRangeSetFromUidRange(
+                profileUidRange,
+                new ArraySet(new UidRange[]{
+                        (new UidRange(TEST_WORK_PROFILE_APP_UID, TEST_WORK_PROFILE_APP_UID))})
+        ));
+        final UidRangeParcel[] excludeAppRangesParcel = toUidRangeStableParcels(excludeAppRanges);
+        final NativeUidRangeConfig cellExcludeAppConfig = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                excludeAppRangesParcel,
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(configsCaptor.capture());
+        assertContainsAll(List.of(configsCaptor.getValue()),
+                List.of(cellExcludeAppConfig, enterpriseAllAllowedConfig));
+
+        // Verify unset by giving all allowed set for all users when the preference got removed.
+        mCm.setProfileNetworkPreference(testHandle, PROFILE_NETWORK_PREFERENCE_ENTERPRISE,
+                r -> r.run(), listener);
+        listener.expectOnComplete();
+        inOrder.verify(mMockNetd).setNetworkAllowlist(configsCaptor.capture());
+        assertContainsAll(List.of(configsCaptor.getValue()),
+                List.of(cellAllAllowedConfig, enterpriseAllAllowedConfig));
+
+        // Verify issuing with cellular set only when a network with enterprise capability
+        // disconnects.
+        enterpriseAgent.disconnect();
+        waitForIdle();
+        inOrder.verify(mMockNetd).setNetworkAllowlist(
+                new NativeUidRangeConfig[]{cellAllAllowedConfig});
+    }
+
+    @Test
+    public void testProfileNetworkPreferenceBlocking_networkChanges() throws Exception {
+        final InOrder inOrder = inOrder(mMockNetd);
+        final UserHandle testHandle = setupEnterpriseNetwork();
+        doReturn(asList(PRIMARY_USER_HANDLE, testHandle))
+                .when(mUserManager).getUserHandles(anyBoolean());
+
+        // Setup profile preference which only applies to test app uid on the managed profile.
+        ProfileNetworkPreference.Builder prefBuilder = new ProfileNetworkPreference.Builder();
+        prefBuilder.setPreference(PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING)
+                .setIncludedUids(new int[]{testHandle.getUid(TEST_WORK_PROFILE_APP_UID)})
+                .setPreferenceEnterpriseId(NET_ENTERPRISE_ID_1);
+        final TestOnCompleteListener listener = new TestOnCompleteListener();
+        mCm.setProfileNetworkPreferences(testHandle,
+                List.of(prefBuilder.build()),
+                r -> r.run(), listener);
+        listener.expectOnComplete();
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[]{});
+
+        // Start with 1 default network, which should be restricted since the blocking
+        // preference is already set.
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+
+        // Verify cellular network applies to the allow list.
+        // Cell: 0~99999, 200000~TEST_APP_UID-1, TEST_APP_UID+1~299999
+        // Enterprise: 0~99999, 200000~299999
+        final ArraySet<UidRange> excludeAppRanges = new ArraySet<>();
+        final UidRange profileUidRange =
+                UidRange.createForUser(UserHandle.of(TEST_WORK_PROFILE_USER_ID));
+        excludeAppRanges.add(PRIMARY_UIDRANGE);
+        excludeAppRanges.addAll(UidRangeUtils.removeRangeSetFromUidRange(
+                profileUidRange,
+                new ArraySet(new UidRange[]{
+                        (new UidRange(TEST_WORK_PROFILE_APP_UID, TEST_WORK_PROFILE_APP_UID))})
+        ));
+        final UidRangeParcel[] excludeAppRangesParcel = toUidRangeStableParcels(excludeAppRanges);
+        final NativeUidRangeConfig cellExcludeAppConfig = new NativeUidRangeConfig(
+                mCellAgent.getNetwork().netId,
+                excludeAppRangesParcel,
+                0 /* subPriority */);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(
+                new NativeUidRangeConfig[]{cellExcludeAppConfig});
+
+        // Verify enterprise network is not blocked for test app.
+        final TestNetworkAgentWrapper enterpriseAgent = makeEnterpriseNetworkAgent(
+                NET_ENTERPRISE_ID_1);
+        enterpriseAgent.connect(true);
+        ArraySet<UidRange> allowedAllUidRanges = new ArraySet<>();
+        allowedAllUidRanges.add(PRIMARY_UIDRANGE);
+        allowedAllUidRanges.add(profileUidRange);
+        final UidRangeParcel[] allowAllUidRangesParcel = toUidRangeStableParcels(
+                allowedAllUidRanges);
+        final NativeUidRangeConfig enterpriseAllAllowedConfig = new NativeUidRangeConfig(
+                enterpriseAgent.getNetwork().netId,
+                allowAllUidRangesParcel,
+                0 /* subPriority */);
+        // Network agents are stored in an ArraySet which does not guarantee the order and
+        // making the order of the list undeterministic. Thus, verify this in order insensitive way.
+        final ArgumentCaptor<NativeUidRangeConfig[]> configsCaptor = ArgumentCaptor.forClass(
+                NativeUidRangeConfig[].class);
+        inOrder.verify(mMockNetd).setNetworkAllowlist(configsCaptor.capture());
+        assertContainsAll(List.of(configsCaptor.getValue()),
+                List.of(enterpriseAllAllowedConfig, cellExcludeAppConfig));
+
+        // Verify issuing with cellular set only when enterprise network disconnects.
+        enterpriseAgent.disconnect();
+        waitForIdle();
+        inOrder.verify(mMockNetd).setNetworkAllowlist(
+                new NativeUidRangeConfig[]{cellExcludeAppConfig});
+
+        mCellAgent.disconnect();
+        waitForIdle();
+        inOrder.verify(mMockNetd).setNetworkAllowlist(new NativeUidRangeConfig[]{});
+    }
+
     /**
      * Make sure wrong preferences for per-profile default networking are rejected.
      */
@@ -15789,7 +15967,7 @@
         ProfileNetworkPreference.Builder profileNetworkPreferenceBuilder =
                 new ProfileNetworkPreference.Builder();
         profileNetworkPreferenceBuilder.setPreference(
-                PROFILE_NETWORK_PREFERENCE_ENTERPRISE_NO_FALLBACK + 1);
+                PROFILE_NETWORK_PREFERENCE_ENTERPRISE_BLOCKING + 1);
         profileNetworkPreferenceBuilder.setPreferenceEnterpriseId(NET_ENTERPRISE_ID_1);
         assertThrows("Should not be able to set an illegal preference",
                 IllegalArgumentException.class,
@@ -16024,7 +16202,7 @@
                 .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED);
 
-        mEthernetNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET,
+        mEthernetAgent = new TestNetworkAgentWrapper(TRANSPORT_ETHERNET,
                 new LinkProperties(), ncb.build());
 
         final ArraySet<Integer> serviceUidSet = new ArraySet<>();
@@ -16036,22 +16214,22 @@
                 .addTransportType(TRANSPORT_ETHERNET)
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .build(), cb);
-        mEthernetNetworkAgent.connect(true);
-        cb.expectAvailableThenValidatedCallbacks(mEthernetNetworkAgent);
+        mEthernetAgent.connect(true);
+        cb.expectAvailableThenValidatedCallbacks(mEthernetAgent);
 
         // Cell gets to set the service UID as access UID
         ncb.setAllowedUids(serviceUidSet);
-        mEthernetNetworkAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
+        mEthernetAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
         if (SdkLevel.isAtLeastT() && hasAutomotiveFeature) {
-            cb.expectCapabilitiesThat(mEthernetNetworkAgent,
+            cb.expectCapabilitiesThat(mEthernetAgent,
                     caps -> caps.getAllowedUids().equals(serviceUidSet));
         } else {
             // S and no automotive feature must ignore access UIDs.
             cb.assertNoCallback(TEST_CALLBACK_TIMEOUT_MS);
         }
 
-        mEthernetNetworkAgent.disconnect();
-        cb.expect(CallbackEntry.LOST, mEthernetNetworkAgent);
+        mEthernetAgent.disconnect();
+        cb.expect(LOST, mEthernetAgent);
         mCm.unregisterNetworkCallback(cb);
     }
 
@@ -16074,7 +16252,7 @@
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .setNetworkSpecifier(new TelephonyNetworkSpecifier(1 /* subid */));
 
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR,
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR,
                 new LinkProperties(), ncb.build());
 
         final ArraySet<Integer> serviceUidSet = new ArraySet<>();
@@ -16092,13 +16270,12 @@
                 .addTransportType(TRANSPORT_CELLULAR)
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .build(), cb);
-        mCellNetworkAgent.connect(true);
-        cb.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent.connect(true);
+        cb.expectAvailableThenValidatedCallbacks(mCellAgent);
         ncb.setAllowedUids(serviceUidSet);
-        mCellNetworkAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
+        mCellAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
         if (SdkLevel.isAtLeastT()) {
-            cb.expectCapabilitiesThat(mCellNetworkAgent,
-                    caps -> caps.getAllowedUids().equals(serviceUidSet));
+            cb.expectCapabilitiesThat(mCellAgent, cp -> cp.getAllowedUids().equals(serviceUidSet));
         } else {
             // S must ignore access UIDs.
             cb.assertNoCallback(TEST_CALLBACK_TIMEOUT_MS);
@@ -16106,10 +16283,9 @@
 
         // ...but not to some other UID. Rejection sets UIDs to the empty set
         ncb.setAllowedUids(nonServiceUidSet);
-        mCellNetworkAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
+        mCellAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
         if (SdkLevel.isAtLeastT()) {
-            cb.expectCapabilitiesThat(mCellNetworkAgent,
-                    caps -> caps.getAllowedUids().isEmpty());
+            cb.expectCapabilitiesThat(mCellAgent, cp -> cp.getAllowedUids().isEmpty());
         } else {
             // S must ignore access UIDs.
             cb.assertNoCallback(TEST_CALLBACK_TIMEOUT_MS);
@@ -16117,11 +16293,11 @@
 
         // ...and also not to multiple UIDs even including the service UID
         ncb.setAllowedUids(serviceUidSetPlus);
-        mCellNetworkAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
+        mCellAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
         cb.assertNoCallback(TEST_CALLBACK_TIMEOUT_MS);
 
-        mCellNetworkAgent.disconnect();
-        cb.expect(CallbackEntry.LOST, mCellNetworkAgent);
+        mCellAgent.disconnect();
+        cb.expect(LOST, mCellAgent);
         mCm.unregisterNetworkCallback(cb);
 
         // Must be unset before touching the transports, because remove and add transport types
@@ -16135,12 +16311,11 @@
                 .addTransportType(TRANSPORT_WIFI)
                 .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
                 .build(), cb);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI,
-                new LinkProperties(), ncb.build());
-        mWiFiNetworkAgent.connect(true);
-        cb.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, new LinkProperties(), ncb.build());
+        mWiFiAgent.connect(true);
+        cb.expectAvailableThenValidatedCallbacks(mWiFiAgent);
         ncb.setAllowedUids(serviceUidSet);
-        mWiFiNetworkAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
+        mWiFiAgent.setNetworkCapabilities(ncb.build(), true /* sendToCS */);
         cb.assertNoCallback(TEST_CALLBACK_TIMEOUT_MS);
         mCm.unregisterNetworkCallback(cb);
     }
@@ -16211,7 +16386,7 @@
             final NetworkCallback[] callbacks = new NetworkCallback[remainingCount];
             doAsUid(otherAppUid, () -> {
                 for (int i = 0; i < remainingCount; ++i) {
-                    callbacks[i] = new TestableNetworkCallback();
+                    callbacks[i] = new TestNetworkCallback();
                     mCm.registerDefaultNetworkCallback(callbacks[i]);
                 }
             });
@@ -16327,12 +16502,12 @@
     public void testMobileDataPreferredUidsChanged() throws Exception {
         final InOrder inorder = inOrder(mMockNetd);
         registerDefaultNetworkCallbacks();
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
 
-        final int cellNetId = mCellNetworkAgent.getNetwork().netId;
+        final int cellNetId = mCellAgent.getNetwork().netId;
         inorder.verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(
                 cellNetId, INetd.PERMISSION_NONE));
 
@@ -16385,13 +16560,13 @@
         cellNetworkCallback.assertNoCallback();
 
         registerDefaultNetworkCallbacks();
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
-        final int wifiNetId = mWiFiNetworkAgent.getNetwork().netId;
+        final int wifiNetId = mWiFiAgent.getNetwork().netId;
         inorder.verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(
                 wifiNetId, INetd.PERMISSION_NONE));
 
@@ -16412,14 +16587,14 @@
 
         // Cellular network connected. mTestPackageDefaultNetworkCallback should receive
         // callback with cellular network and net id and uid ranges should be updated to netd.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         mDefaultNetworkCallback.assertNoCallback();
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
-        final int cellNetId = mCellNetworkAgent.getNetwork().netId;
+        final int cellNetId = mCellAgent.getNetwork().netId;
         final NativeUidRangeConfig cellConfig = new NativeUidRangeConfig(cellNetId, uidRanges,
                 PREFERENCE_ORDER_MOBILE_DATA_PREFERERRED);
         inorder.verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(
@@ -16429,26 +16604,26 @@
 
         // Cellular network disconnected. mTestPackageDefaultNetworkCallback should receive
         // callback with wifi network from fallback request.
-        mCellNetworkAgent.disconnect();
+        mCellAgent.disconnect();
         mDefaultNetworkCallback.assertNoCallback();
-        cellNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        cellNetworkCallback.expect(LOST, mCellAgent);
+        mTestPackageDefaultNetworkCallback.expect(LOST, mCellAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
         inorder.verify(mMockNetd, times(1)).networkAddUidRangesParcel(wifiConfig);
         inorder.verify(mMockNetd, never()).networkRemoveUidRangesParcel(any());
         inorder.verify(mMockNetd).networkDestroy(cellNetId);
 
         // Cellular network comes back. mTestPackageDefaultNetworkCallback should receive
         // callback with cellular network.
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         mDefaultNetworkCallback.assertNoCallback();
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
-        final int cellNetId2 = mCellNetworkAgent.getNetwork().netId;
+        final int cellNetId2 = mCellAgent.getNetwork().netId;
         final NativeUidRangeConfig cellConfig2 = new NativeUidRangeConfig(cellNetId2, uidRanges,
                 PREFERENCE_ORDER_MOBILE_DATA_PREFERERRED);
         inorder.verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(
@@ -16458,11 +16633,11 @@
 
         // Wifi network disconnected. mTestPackageDefaultNetworkCallback should not receive
         // any callback.
-        mWiFiNetworkAgent.disconnect();
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mWiFiAgent.disconnect();
+        mDefaultNetworkCallback.expect(LOST, mWiFiAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         mTestPackageDefaultNetworkCallback.assertNoCallback();
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
         waitForIdle();
         inorder.verify(mMockNetd, never()).networkAddUidRangesParcel(any());
         inorder.verify(mMockNetd, never()).networkRemoveUidRangesParcel(any());
@@ -16494,15 +16669,15 @@
             cellFactory.expectRequestAdds(2);
             cellFactory.assertRequestCountEquals(2);
 
-            mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-            mWiFiNetworkAgent.connect(true);
+            mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+            mWiFiAgent.connect(true);
 
             // The cellFactory however is outscored, and should lose default internet request.
             // But it should still see mobile data preferred request.
             cellFactory.expectRequestRemove();
             cellFactory.assertRequestCountEquals(1);
 
-            mWiFiNetworkAgent.disconnect();
+            mWiFiAgent.disconnect();
             // The network satisfying the default internet request has disconnected, so the
             // cellFactory sees the default internet requests again.
             cellFactory.expectRequestAdd();
@@ -16544,7 +16719,7 @@
         final UserHandle testHandle = setupEnterpriseNetwork();
 
         setOemNetworkPreferenceAgentConnected(TRANSPORT_CELLULAR, true);
-        final int cellNetId = mCellNetworkAgent.getNetwork().netId;
+        final int cellNetId = mCellAgent.getNetwork().netId;
         inorder.verify(mMockNetd, times(1)).networkCreate(nativeNetworkConfigPhysical(
                 cellNetId, INetd.PERMISSION_NONE));
 
@@ -16617,28 +16792,28 @@
 
         // Register callbacks and have wifi network as default network.
         registerDefaultNetworkCallbacks();
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.connect(true);
-        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(),
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.connect(true);
+        mDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(),
                 mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Set MOBILE_DATA_PREFERRED_UIDS setting with TEST_WORK_PROFILE_APP_UID and
         // TEST_PACKAGE_UID. Both mProfileDefaultNetworkCallback and
         // mTestPackageDefaultNetworkCallback should receive callback with cell network.
         setAndUpdateMobileDataPreferredUids(Set.of(TEST_WORK_PROFILE_APP_UID, TEST_PACKAGE_UID));
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
+        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
         mDefaultNetworkCallback.assertNoCallback();
-        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(),
+        mProfileDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableThenValidatedCallbacks(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(),
                 mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Set user profile network preference with test profile. mProfileDefaultNetworkCallback
         // should receive callback with higher priority network preference (enterprise network).
@@ -16653,7 +16828,7 @@
         assertNoCallbacks(mDefaultNetworkCallback, mTestPackageDefaultNetworkCallback);
         mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(workAgent);
         assertEquals(workAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Set oem network preference with TEST_PACKAGE_UID. mTestPackageDefaultNetworkCallback
         // should receive callback with higher priority network preference (current default network)
@@ -16664,8 +16839,8 @@
         final UidRangeParcel[] uidRanges1 = toUidRangeStableParcels(uidRangesForUids(uids1));
         setupSetOemNetworkPreferenceForPreferenceTest(networkPref, uidRanges1, TEST_PACKAGE_NAME);
         assertNoCallbacks(mDefaultNetworkCallback, mProfileDefaultNetworkCallback);
-        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        assertEquals(mWiFiAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
         assertEquals(workAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
 
         // Set oem network preference with TEST_WORK_PROFILE_APP_UID. Both
@@ -16677,11 +16852,11 @@
         setupSetOemNetworkPreferenceForPreferenceTest(
                 networkPref, uidRanges2, "com.android.test", testHandle);
         mDefaultNetworkCallback.assertNoCallback();
-        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
-        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        assertEquals(mWiFiNetworkAgent.getNetwork(),
+        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
+        mTestPackageDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
+        assertEquals(mWiFiAgent.getNetwork(),
                 mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Remove oem network preference, mProfileDefaultNetworkCallback should receive callback
         // with current highest priority network preference (enterprise network) and the others
@@ -16693,23 +16868,23 @@
         assertNoCallbacks(mDefaultNetworkCallback, mTestPackageDefaultNetworkCallback);
         mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(workAgent);
         assertEquals(workAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Remove user profile network preference.
         mCm.setProfileNetworkPreference(testHandle, PROFILE_NETWORK_PREFERENCE_DEFAULT,
                 r -> r.run(), listener);
         listener.expectOnComplete();
         assertNoCallbacks(mDefaultNetworkCallback, mTestPackageDefaultNetworkCallback);
-        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-        assertEquals(mCellNetworkAgent.getNetwork(),
+        mProfileDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
+        assertEquals(mCellAgent.getNetwork(),
                 mCm.getActiveNetworkForUid(TEST_WORK_PROFILE_APP_UID));
-        assertEquals(mCellNetworkAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
+        assertEquals(mCellAgent.getNetwork(), mCm.getActiveNetworkForUid(TEST_PACKAGE_UID));
 
         // Disconnect wifi
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         assertNoCallbacks(mProfileDefaultNetworkCallback, mTestPackageDefaultNetworkCallback);
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mWiFiNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+        mDefaultNetworkCallback.expect(LOST, mWiFiAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
     }
 
     @Test
@@ -16723,13 +16898,13 @@
     public void testUpdateRateLimit_EnableDisable() throws Exception {
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
 
         final LinkProperties cellLp = new LinkProperties();
         cellLp.setInterfaceName(MOBILE_IFNAME);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false);
 
         waitForIdle();
 
@@ -16762,8 +16937,8 @@
     public void testUpdateRateLimit_WhenNewNetworkIsAdded() throws Exception {
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
 
         waitForIdle();
 
@@ -16778,8 +16953,8 @@
 
         final LinkProperties cellLp = new LinkProperties();
         cellLp.setInterfaceName(MOBILE_IFNAME);
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
-        mCellNetworkAgent.connect(false);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR, cellLp);
+        mCellAgent.connect(false);
         assertNotNull(readHead.poll(TIMEOUT_MS, it -> it.first == cellLp.getInterfaceName()
                 && it.second == rateLimitInBytesPerSec));
     }
@@ -16789,8 +16964,8 @@
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connectWithoutInternet();
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connectWithoutInternet();
 
         waitForIdle();
 
@@ -16814,8 +16989,8 @@
         // - ensure network interface is not rate limited
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
         waitForIdle();
 
         final ArrayTrackRecord<Pair<String, Long>>.ReadHead readHeadWifi =
@@ -16827,14 +17002,14 @@
                 it -> it.first == wifiLp.getInterfaceName()
                         && it.second == rateLimitInBytesPerSec));
 
-        mWiFiNetworkAgent.disconnect();
+        mWiFiAgent.disconnect();
         assertNotNull(readHeadWifi.poll(TIMEOUT_MS,
                 it -> it.first == wifiLp.getInterfaceName() && it.second == -1));
 
         setIngressRateLimit(-1);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
         assertNull(readHeadWifi.poll(TIMEOUT_MS, it -> it.first == wifiLp.getInterfaceName()));
     }
 
@@ -16842,8 +17017,8 @@
     public void testUpdateRateLimit_UpdateExistingRateLimit() throws Exception {
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
         waitForIdle();
 
         final ArrayTrackRecord<Pair<String, Long>>.ReadHead readHeadWifi =
@@ -16872,8 +17047,8 @@
     public void testUpdateRateLimit_DoesNothingBeforeT() throws Exception {
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp);
+        mWiFiAgent.connect(true);
         waitForIdle();
 
         final ArrayTrackRecord<Pair<String, Long>>.ReadHead readHead =
@@ -16912,8 +17087,8 @@
 
         final String bssid1 = "AA:AA:AA:AA:AA:AA";
         final String bssid2 = "BB:BB:BB:BB:BB:BB";
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        mCellNetworkAgent.connect(true);
+        mCellAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+        mCellAgent.connect(true);
         NetworkCapabilities wifiNc1 = new NetworkCapabilities()
                 .addCapability(NET_CAPABILITY_INTERNET)
                 .addCapability(NET_CAPABILITY_NOT_VPN)
@@ -16926,106 +17101,98 @@
                 .setTransportInfo(new WifiInfo.Builder().setBssid(bssid2).build());
         final LinkProperties wifiLp = new LinkProperties();
         wifiLp.setInterfaceName(WIFI_IFNAME);
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp, wifiNc1);
-        mWiFiNetworkAgent.connect(true);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, wifiLp, wifiNc1);
+        mWiFiAgent.connect(true);
 
         // The default network will be switching to Wi-Fi Network.
         final TestNetworkCallback wifiNetworkCallback = new TestNetworkCallback();
         final NetworkRequest wifiRequest = new NetworkRequest.Builder()
                 .addTransportType(TRANSPORT_WIFI).build();
         mCm.requestNetwork(wifiRequest, wifiNetworkCallback);
-        wifiNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+        wifiNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
         registerDefaultNetworkCallbacks();
-        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
 
         // There is a bug in the current code where ignoring validation after roam will not
         // correctly change the default network if the result if the validation is partial or
         // captive portal. TODO : fix the bug and reinstate this code.
         if (false) {
             // Wi-Fi roaming from wifiNc1 to wifiNc2 but the network is now behind a captive portal.
-            mWiFiNetworkAgent.setNetworkCapabilities(wifiNc2, true /* sendToConnectivityService */);
+            mWiFiAgent.setNetworkCapabilities(wifiNc2, true /* sendToConnectivityService */);
             // The only thing changed in this CAPS is the BSSID, which can't be tested for in this
             // test because it's redacted.
-            wifiNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                    mWiFiNetworkAgent);
-            mDefaultNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                    mWiFiNetworkAgent);
-            mWiFiNetworkAgent.setNetworkPortal(TEST_REDIRECT_URL,
-                    false /* privateDnsProbeSent */);
-            mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
+            wifiNetworkCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+            mDefaultNetworkCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+            mWiFiAgent.setNetworkPortal(TEST_REDIRECT_URL, false /* privateDnsProbeSent */);
+            mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
             // Wi-Fi is now detected to have a portal : cell should become the default network.
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
-            wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED,
-                    mWiFiNetworkAgent);
-            wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_CAPTIVE_PORTAL,
-                    mWiFiNetworkAgent);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
+            wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_VALIDATED, mWiFiAgent);
+            wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_CAPTIVE_PORTAL, mWiFiAgent);
 
             // Wi-Fi becomes valid again. The default network goes back to Wi-Fi.
-            mWiFiNetworkAgent.setNetworkValid(false /* privateDnsProbeSent */);
-            mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+            mWiFiAgent.setNetworkValid(false /* privateDnsProbeSent */);
+            mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
             wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_CAPTIVE_PORTAL,
-                    mWiFiNetworkAgent);
+                    mWiFiAgent);
 
             // Wi-Fi roaming from wifiNc2 to wifiNc1, and the network now has partial connectivity.
-            mWiFiNetworkAgent.setNetworkCapabilities(wifiNc1, true);
-            wifiNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                    mWiFiNetworkAgent);
-            mDefaultNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                    mWiFiNetworkAgent);
-            mWiFiNetworkAgent.setNetworkPartial();
-            mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
+            mWiFiAgent.setNetworkCapabilities(wifiNc1, true);
+            wifiNetworkCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+            mDefaultNetworkCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+            mWiFiAgent.setNetworkPartial();
+            mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
             // Wi-Fi now only offers partial connectivity, so in the absence of accepting partial
             // connectivity explicitly for this network, it loses default status to cell.
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
             wifiNetworkCallback.expectCapabilitiesWith(NET_CAPABILITY_PARTIAL_CONNECTIVITY,
-                    mWiFiNetworkAgent);
+                    mWiFiAgent);
 
             // Wi-Fi becomes valid again. The default network goes back to Wi-Fi.
-            mWiFiNetworkAgent.setNetworkValid(false /* privateDnsProbeSent */);
-            mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), true);
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiNetworkAgent);
+            mWiFiAgent.setNetworkValid(false /* privateDnsProbeSent */);
+            mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), true);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mWiFiAgent);
             wifiNetworkCallback.expectCapabilitiesWithout(NET_CAPABILITY_PARTIAL_CONNECTIVITY,
-                    mWiFiNetworkAgent);
+                    mWiFiAgent);
         }
         mCm.unregisterNetworkCallback(wifiNetworkCallback);
 
         // Wi-Fi roams from wifiNc1 to wifiNc2, and now becomes really invalid. If validation
         // failures after roam are not ignored, this will cause cell to become the default network.
         // If they are ignored, this will not cause a switch until later.
-        mWiFiNetworkAgent.setNetworkCapabilities(wifiNc2, true);
-        mDefaultNetworkCallback.expect(CallbackEntry.NETWORK_CAPS_UPDATED,
-                mWiFiNetworkAgent);
-        mWiFiNetworkAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
-        mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
+        mWiFiAgent.setNetworkCapabilities(wifiNc2, true);
+        mDefaultNetworkCallback.expect(NETWORK_CAPS_UPDATED, mWiFiAgent);
+        mWiFiAgent.setNetworkInvalid(false /* invalidBecauseOfPrivateDns */);
+        mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
 
         if (enabled) {
             // Network validation failed, but the result will be ignored.
-            assertTrue(mCm.getNetworkCapabilities(mWiFiNetworkAgent.getNetwork()).hasCapability(
+            assertTrue(mCm.getNetworkCapabilities(mWiFiAgent.getNetwork()).hasCapability(
                     NET_CAPABILITY_VALIDATED));
-            mWiFiNetworkAgent.setNetworkValid(false);
+            mWiFiAgent.setNetworkValid(false);
 
             // Behavior of after config_validationFailureAfterRoamIgnoreTimeMillis
             ConditionVariable waitForValidationBlock = new ConditionVariable();
             doReturn(50).when(mResources)
                     .getInteger(R.integer.config_validationFailureAfterRoamIgnoreTimeMillis);
             // Wi-Fi roaming from wifiNc2 to wifiNc1.
-            mWiFiNetworkAgent.setNetworkCapabilities(wifiNc1, true);
-            mWiFiNetworkAgent.setNetworkInvalid(false);
+            mWiFiAgent.setNetworkCapabilities(wifiNc1, true);
+            mWiFiAgent.setNetworkInvalid(false);
             waitForValidationBlock.block(150);
-            mCm.reportNetworkConnectivity(mWiFiNetworkAgent.getNetwork(), false);
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+            mCm.reportNetworkConnectivity(mWiFiAgent.getNetwork(), false);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         } else {
-            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellNetworkAgent);
+            mDefaultNetworkCallback.expectAvailableCallbacksValidated(mCellAgent);
         }
 
         // Wi-Fi is still connected and would become the default network if cell were to
         // disconnect. This assertion ensures that the switch to cellular was not caused by
         // Wi-Fi disconnecting (e.g., because the capability change to wifiNc2 caused it
         // to stop satisfying the default request).
-        mCellNetworkAgent.disconnect();
-        mDefaultNetworkCallback.expect(CallbackEntry.LOST, mCellNetworkAgent);
-        mDefaultNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiNetworkAgent);
+        mCellAgent.disconnect();
+        mDefaultNetworkCallback.expect(LOST, mCellAgent);
+        mDefaultNetworkCallback.expectAvailableCallbacksUnvalidated(mWiFiAgent);
 
     }
 
@@ -17108,8 +17275,8 @@
         lp.setInterfaceName(WIFI_IFNAME);
         lp.setMtu(mtu);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        mWiFiNetworkAgent.sendLinkProperties(lp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+        mWiFiAgent.sendLinkProperties(lp);
 
         waitForIdle();
         verify(mMockNetd).interfaceSetMtu(eq(WIFI_IFNAME), eq(mtu));
@@ -17122,12 +17289,12 @@
         lp.setInterfaceName(WIFI_IFNAME);
         lp.setMtu(mtu);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
 
         LinkProperties lp2 = new LinkProperties(lp);
         lp2.setMtu(mtu2);
 
-        mWiFiNetworkAgent.sendLinkProperties(lp2);
+        mWiFiAgent.sendLinkProperties(lp2);
 
         waitForIdle();
         verify(mMockNetd).interfaceSetMtu(eq(WIFI_IFNAME), eq(mtu2));
@@ -17140,8 +17307,8 @@
         lp.setInterfaceName(WIFI_IFNAME);
         lp.setMtu(mtu);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
-        mWiFiNetworkAgent.sendLinkProperties(new LinkProperties(lp));
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
+        mWiFiAgent.sendLinkProperties(new LinkProperties(lp));
 
         waitForIdle();
         verify(mMockNetd, never()).interfaceSetMtu(eq(WIFI_IFNAME), anyInt());
@@ -17154,13 +17321,13 @@
         lp.setInterfaceName(WIFI_IFNAME);
         lp.setMtu(mtu);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
 
         LinkProperties lp2 = new LinkProperties();
         assertNull(lp2.getInterfaceName());
         lp2.setMtu(mtu);
 
-        mWiFiNetworkAgent.sendLinkProperties(new LinkProperties(lp2));
+        mWiFiAgent.sendLinkProperties(new LinkProperties(lp2));
 
         waitForIdle();
         verify(mMockNetd, never()).interfaceSetMtu(any(), anyInt());
@@ -17173,16 +17340,26 @@
         lp.setInterfaceName(WIFI_IFNAME);
         lp.setMtu(mtu);
 
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
+        mWiFiAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI, lp);
 
         final String ifaceName2 = WIFI_IFNAME + "_2";
         LinkProperties lp2 = new LinkProperties();
         lp2.setInterfaceName(ifaceName2);
         lp2.setMtu(mtu);
 
-        mWiFiNetworkAgent.sendLinkProperties(new LinkProperties(lp2));
+        mWiFiAgent.sendLinkProperties(new LinkProperties(lp2));
 
         waitForIdle();
         verify(mMockNetd).interfaceSetMtu(eq(ifaceName2), eq(mtu));
     }
+
+    @Test
+    public void testCreateDeliveryGroupKeyForConnectivityAction() throws Exception {
+        final NetworkInfo info = new NetworkInfo(0 /* type */, 2 /* subtype */,
+                "MOBILE" /* typeName */, "LTE" /* subtypeName */);
+        assertEquals("0;2;null", createDeliveryGroupKeyForConnectivityAction(info));
+
+        info.setExtraInfo("test_info");
+        assertEquals("0;2;test_info", createDeliveryGroupKeyForConnectivityAction(info));
+    }
 }
diff --git a/tests/unit/java/com/android/server/NsdServiceTest.java b/tests/unit/java/com/android/server/NsdServiceTest.java
index 5808beb..c7a6639 100644
--- a/tests/unit/java/com/android/server/NsdServiceTest.java
+++ b/tests/unit/java/com/android/server/NsdServiceTest.java
@@ -16,16 +16,25 @@
 
 package com.android.server;
 
+import static android.net.InetAddresses.parseNumericAddress;
+import static android.net.nsd.NsdManager.FAILURE_BAD_PARAMETERS;
 import static android.net.nsd.NsdManager.FAILURE_INTERNAL_ERROR;
+import static android.net.nsd.NsdManager.FAILURE_OPERATION_NOT_RUNNING;
+
+import static com.android.testutils.ContextUtils.mockService;
 
 import static libcore.junit.util.compat.CoreCompatChangeRule.DisableCompatChanges;
 import static libcore.junit.util.compat.CoreCompatChangeRule.EnableCompatChanges;
 
+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.assertThrows;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.doCallRealMethod;
 import static org.mockito.Mockito.doReturn;
@@ -42,7 +51,7 @@
 import android.content.ContentResolver;
 import android.content.Context;
 import android.net.INetd;
-import android.net.InetAddresses;
+import android.net.Network;
 import android.net.mdns.aidl.DiscoveryInfo;
 import android.net.mdns.aidl.GetAddressInfo;
 import android.net.mdns.aidl.IMDnsEventListener;
@@ -63,10 +72,17 @@
 import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
+import android.os.RemoteException;
 
 import androidx.annotation.NonNull;
 import androidx.test.filters.SmallTest;
 
+import com.android.server.NsdService.Dependencies;
+import com.android.server.connectivity.mdns.MdnsAdvertiser;
+import com.android.server.connectivity.mdns.MdnsDiscoveryManager;
+import com.android.server.connectivity.mdns.MdnsServiceBrowserListener;
+import com.android.server.connectivity.mdns.MdnsServiceInfo;
+import com.android.server.connectivity.mdns.MdnsSocketProvider;
 import com.android.testutils.DevSdkIgnoreRule;
 import com.android.testutils.DevSdkIgnoreRunner;
 import com.android.testutils.HandlerUtils;
@@ -82,7 +98,10 @@
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 
+import java.net.UnknownHostException;
 import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
 import java.util.Queue;
 
 // TODOs:
@@ -96,11 +115,13 @@
     private static final long CLEANUP_DELAY_MS = 500;
     private static final long TIMEOUT_MS = 500;
     private static final String SERVICE_NAME = "a_name";
-    private static final String SERVICE_TYPE = "a_type";
+    private static final String SERVICE_TYPE = "_test._tcp";
     private static final String SERVICE_FULL_NAME = SERVICE_NAME + "." + SERVICE_TYPE;
     private static final String DOMAIN_NAME = "mytestdevice.local";
     private static final int PORT = 2201;
     private static final int IFACE_IDX_ANY = 0;
+    private static final String IPV4_ADDRESS = "192.0.2.0";
+    private static final String IPV6_ADDRESS = "2001:db8::";
 
     // Records INsdManagerCallback created when NsdService#connect is called.
     // Only accessed on the test thread, since NsdService#connect is called by the NsdManager
@@ -112,6 +133,10 @@
     @Mock Context mContext;
     @Mock ContentResolver mResolver;
     @Mock MDnsManager mMockMDnsM;
+    @Mock Dependencies mDeps;
+    @Mock MdnsDiscoveryManager mDiscoveryManager;
+    @Mock MdnsAdvertiser mAdvertiser;
+    @Mock MdnsSocketProvider mSocketProvider;
     HandlerThread mThread;
     TestHandler mHandler;
     NsdService mService;
@@ -133,9 +158,7 @@
         mThread.start();
         mHandler = new TestHandler(mThread.getLooper());
         when(mContext.getContentResolver()).thenReturn(mResolver);
-        doReturn(MDnsManager.MDNS_SERVICE).when(mContext)
-                .getSystemServiceName(MDnsManager.class);
-        doReturn(mMockMDnsM).when(mContext).getSystemService(MDnsManager.MDNS_SERVICE);
+        mockService(mContext, MDnsManager.class, MDnsManager.MDNS_SERVICE, mMockMDnsM);
         if (mContext.getSystemService(MDnsManager.class) == null) {
             // Test is using mockito-extended
             doCallRealMethod().when(mContext).getSystemService(MDnsManager.class);
@@ -146,6 +169,7 @@
         doReturn(true).when(mMockMDnsM).discover(anyInt(), anyString(), anyInt());
         doReturn(true).when(mMockMDnsM).resolve(
                 anyInt(), anyString(), anyString(), anyString(), anyInt());
+        doReturn(false).when(mDeps).isMdnsDiscoveryManagerEnabled(any(Context.class));
 
         mService = makeService();
     }
@@ -382,7 +406,7 @@
         final NsdServiceInfo resolvedService = resInfoCaptor.getValue();
         assertEquals(SERVICE_NAME, resolvedService.getServiceName());
         assertEquals("." + SERVICE_TYPE, resolvedService.getServiceType());
-        assertEquals(InetAddresses.parseNumericAddress(serviceAddress), resolvedService.getHost());
+        assertEquals(parseNumericAddress(serviceAddress), resolvedService.getHost());
         assertEquals(servicePort, resolvedService.getPort());
         assertNull(resolvedService.getNetwork());
         assertEquals(interfaceIdx, resolvedService.getInterfaceIndex());
@@ -555,12 +579,504 @@
                 anyInt()/* interfaceIdx */);
     }
 
+    @Test
+    public void testStopServiceResolution() {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        final int resolveId = resolvIdCaptor.getValue();
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(resolveId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onResolveStopped(argThat(ns ->
+                request.getServiceName().equals(ns.getServiceName())
+                        && request.getServiceType().equals(ns.getServiceType())));
+    }
+
+    @Test
+    public void testStopResolutionFailed() {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        final int resolveId = resolvIdCaptor.getValue();
+        doReturn(false).when(mMockMDnsM).stopOperation(anyInt());
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(resolveId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onStopResolutionFailed(argThat(ns ->
+                        request.getServiceName().equals(ns.getServiceName())
+                                && request.getServiceType().equals(ns.getServiceType())),
+                eq(FAILURE_OPERATION_NOT_RUNNING));
+    }
+
+    @Test @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+    public void testStopResolutionDuringGettingAddress() throws RemoteException {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Resolve service successfully.
+        final ResolutionInfo resolutionInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLVED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                SERVICE_FULL_NAME,
+                DOMAIN_NAME,
+                PORT,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        doReturn(true).when(mMockMDnsM).getServiceAddress(anyInt(), any(), anyInt());
+        eventListener.onServiceResolutionStatus(resolutionInfo);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> getAddrIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).getServiceAddress(getAddrIdCaptor.capture(), eq(DOMAIN_NAME),
+                eq(IFACE_IDX_ANY));
+
+        final int getAddrId = getAddrIdCaptor.getValue();
+        client.stopServiceResolution(resolveListener);
+        waitForIdle();
+
+        verify(mMockMDnsM).stopOperation(getAddrId);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onResolveStopped(argThat(ns ->
+                request.getServiceName().equals(ns.getServiceName())
+                        && request.getServiceType().equals(ns.getServiceType())));
+    }
+
+    private void verifyUpdatedServiceInfo(NsdServiceInfo info, String serviceName,
+            String serviceType, String address, int port, int interfaceIndex, Network network) {
+        assertEquals(serviceName, info.getServiceName());
+        assertEquals(serviceType, info.getServiceType());
+        assertTrue(info.getHostAddresses().contains(parseNumericAddress(address)));
+        assertEquals(port, info.getPort());
+        assertEquals(network, info.getNetwork());
+        assertEquals(interfaceIndex, info.getInterfaceIndex());
+    }
+
+    @Test
+    public void testRegisterAndUnregisterServiceInfoCallback() throws RemoteException {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final NsdManager.ServiceInfoCallback serviceInfoCallback = mock(
+                NsdManager.ServiceInfoCallback.class);
+        client.registerServiceInfoCallback(request, Runnable::run, serviceInfoCallback);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Resolve service successfully.
+        final ResolutionInfo resolutionInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLVED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                SERVICE_FULL_NAME,
+                DOMAIN_NAME,
+                PORT,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        doReturn(true).when(mMockMDnsM).getServiceAddress(anyInt(), any(), anyInt());
+        eventListener.onServiceResolutionStatus(resolutionInfo);
+        waitForIdle();
+
+        final ArgumentCaptor<Integer> getAddrIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).getServiceAddress(getAddrIdCaptor.capture(), eq(DOMAIN_NAME),
+                eq(IFACE_IDX_ANY));
+
+        // First address info
+        final String v4Address = "192.0.2.1";
+        final String v6Address = "2001:db8::";
+        final GetAddressInfo addressInfo1 = new GetAddressInfo(
+                getAddrIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS,
+                SERVICE_FULL_NAME,
+                v4Address,
+                IFACE_IDX_ANY,
+                999 /* netId */);
+        eventListener.onGettingServiceAddressStatus(addressInfo1);
+        waitForIdle();
+
+        final ArgumentCaptor<NsdServiceInfo> updateInfoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS).times(1))
+                .onServiceUpdated(updateInfoCaptor.capture());
+        verifyUpdatedServiceInfo(updateInfoCaptor.getAllValues().get(0) /* info */, SERVICE_NAME,
+                "." + SERVICE_TYPE, v4Address, PORT, IFACE_IDX_ANY, new Network(999));
+
+        // Second address info
+        final GetAddressInfo addressInfo2 = new GetAddressInfo(
+                getAddrIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_GET_ADDR_SUCCESS,
+                SERVICE_FULL_NAME,
+                v6Address,
+                IFACE_IDX_ANY,
+                999 /* netId */);
+        eventListener.onGettingServiceAddressStatus(addressInfo2);
+        waitForIdle();
+
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS).times(2))
+                .onServiceUpdated(updateInfoCaptor.capture());
+        verifyUpdatedServiceInfo(updateInfoCaptor.getAllValues().get(1) /* info */, SERVICE_NAME,
+                "." + SERVICE_TYPE, v6Address, PORT, IFACE_IDX_ANY, new Network(999));
+
+        client.unregisterServiceInfoCallback(serviceInfoCallback);
+        waitForIdle();
+
+        verify(serviceInfoCallback, timeout(TIMEOUT_MS)).onServiceInfoCallbackUnregistered();
+    }
+
+    @Test
+    public void testRegisterServiceCallbackFailed() throws Exception {
+        final NsdManager client = connectClient(mService);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        final NsdManager.ServiceInfoCallback subscribeListener = mock(
+                NsdManager.ServiceInfoCallback.class);
+        client.registerServiceInfoCallback(request, Runnable::run, subscribeListener);
+        waitForIdle();
+
+        final IMDnsEventListener eventListener = getEventListener();
+        final ArgumentCaptor<Integer> resolvIdCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mMockMDnsM).resolve(resolvIdCaptor.capture(), eq(SERVICE_NAME), eq(SERVICE_TYPE),
+                eq("local.") /* domain */, eq(IFACE_IDX_ANY));
+
+        // Fail to resolve service.
+        final ResolutionInfo resolutionFailedInfo = new ResolutionInfo(
+                resolvIdCaptor.getValue(),
+                IMDnsEventListener.SERVICE_RESOLUTION_FAILED,
+                null /* serviceName */,
+                null /* serviceType */,
+                null /* domain */,
+                null /* serviceFullName */,
+                null /* domainName */,
+                0 /* port */,
+                new byte[0] /* txtRecord */,
+                IFACE_IDX_ANY);
+        eventListener.onServiceResolutionStatus(resolutionFailedInfo);
+        verify(subscribeListener, timeout(TIMEOUT_MS))
+                .onServiceInfoCallbackRegistrationFailed(eq(FAILURE_BAD_PARAMETERS));
+    }
+
+    @Test
+    public void testUnregisterNotRegisteredCallback() {
+        final NsdManager client = connectClient(mService);
+        final NsdManager.ServiceInfoCallback serviceInfoCallback = mock(
+                NsdManager.ServiceInfoCallback.class);
+
+        assertThrows(IllegalArgumentException.class, () ->
+                client.unregisterServiceInfoCallback(serviceInfoCallback));
+    }
+
+    private void makeServiceWithMdnsDiscoveryManagerEnabled() {
+        doReturn(true).when(mDeps).isMdnsDiscoveryManagerEnabled(any(Context.class));
+        doReturn(mDiscoveryManager).when(mDeps).makeMdnsDiscoveryManager(any(), any());
+        doReturn(mSocketProvider).when(mDeps).makeMdnsSocketProvider(any(), any());
+
+        mService = makeService();
+        verify(mDeps).makeMdnsDiscoveryManager(any(), any());
+        verify(mDeps).makeMdnsSocketProvider(any(), any());
+    }
+
+    private void makeServiceWithMdnsAdvertiserEnabled() {
+        doReturn(true).when(mDeps).isMdnsAdvertiserEnabled(any(Context.class));
+        doReturn(mAdvertiser).when(mDeps).makeMdnsAdvertiser(any(), any(), any());
+        doReturn(mSocketProvider).when(mDeps).makeMdnsSocketProvider(any(), any());
+
+        mService = makeService();
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), any());
+        verify(mDeps).makeMdnsSocketProvider(any(), any());
+    }
+
+    @Test
+    public void testMdnsDiscoveryManagerFeature() {
+        // Create NsdService w/o feature enabled.
+        connectClient(mService);
+        verify(mDeps, never()).makeMdnsDiscoveryManager(any(), any());
+        verify(mDeps, never()).makeMdnsSocketProvider(any(), any());
+
+        // Create NsdService again w/ feature enabled.
+        makeServiceWithMdnsDiscoveryManagerEnabled();
+    }
+
+    @Test
+    public void testDiscoveryWithMdnsDiscoveryManager() {
+        makeServiceWithMdnsDiscoveryManagerEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final DiscoveryListener discListener = mock(DiscoveryListener.class);
+        final Network network = new Network(999);
+        final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        // Verify the discovery start / stop.
+        final ArgumentCaptor<MdnsServiceBrowserListener> listenerCaptor =
+                ArgumentCaptor.forClass(MdnsServiceBrowserListener.class);
+        client.discoverServices(SERVICE_TYPE, PROTOCOL, network, r -> r.run(), discListener);
+        waitForIdle();
+        verify(mSocketProvider).startMonitoringSockets();
+        verify(mDiscoveryManager).registerListener(eq(serviceTypeWithLocalDomain),
+                listenerCaptor.capture(), argThat(options -> network.equals(options.getNetwork())));
+        verify(discListener, timeout(TIMEOUT_MS)).onDiscoveryStarted(SERVICE_TYPE);
+
+        final MdnsServiceBrowserListener listener = listenerCaptor.getValue();
+        final MdnsServiceInfo foundInfo = new MdnsServiceInfo(
+                SERVICE_NAME, /* serviceInstanceName */
+                serviceTypeWithLocalDomain.split("\\."), /* serviceType */
+                List.of(), /* subtypes */
+                new String[] {"android", "local"}, /* hostName */
+                12345, /* port */
+                IPV4_ADDRESS,
+                IPV6_ADDRESS,
+                List.of(), /* textStrings */
+                List.of(), /* textEntries */
+                1234, /* interfaceIndex */
+                network);
+
+        // Verify onServiceNameDiscovered callback
+        listener.onServiceNameDiscovered(foundInfo);
+        verify(discListener, timeout(TIMEOUT_MS)).onServiceFound(argThat(info ->
+                info.getServiceName().equals(SERVICE_NAME)
+                        && info.getServiceType().equals(SERVICE_TYPE)
+                        && info.getNetwork().equals(network)));
+
+        final MdnsServiceInfo removedInfo = new MdnsServiceInfo(
+                SERVICE_NAME, /* serviceInstanceName */
+                serviceTypeWithLocalDomain.split("\\."), /* serviceType */
+                null, /* subtypes */
+                null, /* hostName */
+                0, /* port */
+                null, /* ipv4Address */
+                null, /* ipv6Address */
+                null, /* textStrings */
+                null, /* textEntries */
+                1234, /* interfaceIndex */
+                network);
+        // Verify onServiceNameRemoved callback
+        listener.onServiceNameRemoved(removedInfo);
+        verify(discListener, timeout(TIMEOUT_MS)).onServiceLost(argThat(info ->
+                info.getServiceName().equals(SERVICE_NAME)
+                        && info.getServiceType().equals(SERVICE_TYPE)
+                        && info.getNetwork().equals(network)));
+
+        client.stopServiceDiscovery(discListener);
+        waitForIdle();
+        verify(mDiscoveryManager).unregisterListener(eq(serviceTypeWithLocalDomain), any());
+        verify(discListener, timeout(TIMEOUT_MS)).onDiscoveryStopped(SERVICE_TYPE);
+        verify(mSocketProvider, timeout(CLEANUP_DELAY_MS + TIMEOUT_MS)).stopMonitoringSockets();
+    }
+
+    @Test
+    public void testDiscoveryWithMdnsDiscoveryManager_FailedWithInvalidServiceType() {
+        makeServiceWithMdnsDiscoveryManagerEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final DiscoveryListener discListener = mock(DiscoveryListener.class);
+        final Network network = new Network(999);
+        final String invalidServiceType = "a_service";
+        client.discoverServices(
+                invalidServiceType, PROTOCOL, network, r -> r.run(), discListener);
+        waitForIdle();
+        verify(discListener, timeout(TIMEOUT_MS))
+                .onStartDiscoveryFailed(invalidServiceType, FAILURE_INTERNAL_ERROR);
+
+        final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        client.discoverServices(
+                serviceTypeWithLocalDomain, PROTOCOL, network, r -> r.run(), discListener);
+        waitForIdle();
+        verify(discListener, timeout(TIMEOUT_MS))
+                .onStartDiscoveryFailed(serviceTypeWithLocalDomain, FAILURE_INTERNAL_ERROR);
+
+        final String serviceTypeWithoutTcpOrUdpEnding = "_test._com";
+        client.discoverServices(
+                serviceTypeWithoutTcpOrUdpEnding, PROTOCOL, network, r -> r.run(), discListener);
+        waitForIdle();
+        verify(discListener, timeout(TIMEOUT_MS))
+                .onStartDiscoveryFailed(serviceTypeWithoutTcpOrUdpEnding, FAILURE_INTERNAL_ERROR);
+    }
+
+    @Test
+    public void testResolutionWithMdnsDiscoveryManager() throws UnknownHostException {
+        makeServiceWithMdnsDiscoveryManagerEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final ResolveListener resolveListener = mock(ResolveListener.class);
+        final Network network = new Network(999);
+        final String serviceType = "_nsd._service._tcp";
+        final String constructedServiceType = "_nsd._sub._service._tcp.local";
+        final ArgumentCaptor<MdnsServiceBrowserListener> listenerCaptor =
+                ArgumentCaptor.forClass(MdnsServiceBrowserListener.class);
+        final NsdServiceInfo request = new NsdServiceInfo(SERVICE_NAME, serviceType);
+        request.setNetwork(network);
+        client.resolveService(request, resolveListener);
+        waitForIdle();
+        verify(mSocketProvider).startMonitoringSockets();
+        verify(mDiscoveryManager).registerListener(eq(constructedServiceType),
+                listenerCaptor.capture(), argThat(options -> network.equals(options.getNetwork())));
+
+        final MdnsServiceBrowserListener listener = listenerCaptor.getValue();
+        final MdnsServiceInfo mdnsServiceInfo = new MdnsServiceInfo(
+                SERVICE_NAME,
+                constructedServiceType.split("\\."),
+                List.of(), /* subtypes */
+                new String[]{"android", "local"}, /* hostName */
+                PORT,
+                IPV4_ADDRESS,
+                IPV6_ADDRESS,
+                List.of() /* textStrings */,
+                List.of(MdnsServiceInfo.TextEntry.fromBytes(new byte[]{
+                        'k', 'e', 'y', '=', (byte) 0xFF, (byte) 0xFE})) /* textEntries */,
+                1234,
+                network);
+
+        // Verify onServiceFound callback
+        listener.onServiceFound(mdnsServiceInfo);
+        final ArgumentCaptor<NsdServiceInfo> infoCaptor =
+                ArgumentCaptor.forClass(NsdServiceInfo.class);
+        verify(resolveListener, timeout(TIMEOUT_MS)).onServiceResolved(infoCaptor.capture());
+        final NsdServiceInfo info = infoCaptor.getValue();
+        assertEquals(SERVICE_NAME, info.getServiceName());
+        assertEquals("." + serviceType, info.getServiceType());
+        assertEquals(PORT, info.getPort());
+        assertTrue(info.getAttributes().containsKey("key"));
+        assertEquals(1, info.getAttributes().size());
+        assertArrayEquals(new byte[]{(byte) 0xFF, (byte) 0xFE}, info.getAttributes().get("key"));
+        assertEquals(parseNumericAddress(IPV4_ADDRESS), info.getHost());
+        assertEquals(network, info.getNetwork());
+
+        // Verify the listener has been unregistered.
+        verify(mDiscoveryManager, timeout(TIMEOUT_MS))
+                .unregisterListener(eq(constructedServiceType), any());
+        verify(mSocketProvider, timeout(CLEANUP_DELAY_MS + TIMEOUT_MS)).stopMonitoringSockets();
+    }
+
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo(SERVICE_NAME, SERVICE_TYPE);
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        verify(mSocketProvider).startMonitoringSockets();
+        final ArgumentCaptor<Integer> idCaptor = ArgumentCaptor.forClass(Integer.class);
+        verify(mAdvertiser).addService(idCaptor.capture(), argThat(info ->
+                matches(info, regInfo)));
+
+        // Verify onServiceRegistered callback
+        final MdnsAdvertiser.AdvertiserCallback cb = cbCaptor.getValue();
+        cb.onRegisterServiceSucceeded(idCaptor.getValue(), regInfo);
+
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceRegistered(argThat(info -> matches(info,
+                new NsdServiceInfo(regInfo.getServiceName(), null))));
+
+        client.unregisterService(regListener);
+        waitForIdle();
+        verify(mAdvertiser).removeService(idCaptor.getValue());
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceUnregistered(
+                argThat(info -> matches(info, regInfo)));
+        verify(mSocketProvider, timeout(TIMEOUT_MS)).stopMonitoringSockets();
+    }
+
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser_FailedWithInvalidServiceType() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo(SERVICE_NAME, "invalid_type");
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        verify(mAdvertiser, never()).addService(anyInt(), any());
+
+        verify(regListener, timeout(TIMEOUT_MS)).onRegistrationFailed(
+                argThat(info -> matches(info, regInfo)), eq(FAILURE_INTERNAL_ERROR));
+    }
+
+    @Test
+    public void testAdvertiseWithMdnsAdvertiser_LongServiceName() {
+        makeServiceWithMdnsAdvertiserEnabled();
+
+        final NsdManager client = connectClient(mService);
+        final RegistrationListener regListener = mock(RegistrationListener.class);
+        // final String serviceTypeWithLocalDomain = SERVICE_TYPE + ".local";
+        final ArgumentCaptor<MdnsAdvertiser.AdvertiserCallback> cbCaptor =
+                ArgumentCaptor.forClass(MdnsAdvertiser.AdvertiserCallback.class);
+        verify(mDeps).makeMdnsAdvertiser(any(), any(), cbCaptor.capture());
+
+        final NsdServiceInfo regInfo = new NsdServiceInfo("a".repeat(70), SERVICE_TYPE);
+        regInfo.setHost(parseNumericAddress("192.0.2.123"));
+        regInfo.setPort(12345);
+        regInfo.setAttribute("testattr", "testvalue");
+        regInfo.setNetwork(new Network(999));
+
+        client.registerService(regInfo, NsdManager.PROTOCOL_DNS_SD, Runnable::run, regListener);
+        waitForIdle();
+        final ArgumentCaptor<Integer> idCaptor = ArgumentCaptor.forClass(Integer.class);
+        // Service name is truncated to 63 characters
+        verify(mAdvertiser).addService(idCaptor.capture(),
+                argThat(info -> info.getServiceName().equals("a".repeat(63))));
+
+        // Verify onServiceRegistered callback
+        final MdnsAdvertiser.AdvertiserCallback cb = cbCaptor.getValue();
+        cb.onRegisterServiceSucceeded(idCaptor.getValue(), regInfo);
+
+        verify(regListener, timeout(TIMEOUT_MS)).onServiceRegistered(
+                argThat(info -> matches(info, new NsdServiceInfo(regInfo.getServiceName(), null))));
+    }
+
     private void waitForIdle() {
         HandlerUtils.waitForIdle(mHandler, TIMEOUT_MS);
     }
 
     NsdService makeService() {
-        final NsdService service = new NsdService(mContext, mHandler, CLEANUP_DELAY_MS) {
+        final NsdService service = new NsdService(mContext, mHandler, CLEANUP_DELAY_MS, mDeps) {
             @Override
             public INsdServiceConnector connect(INsdManagerCallback baseCb) {
                 // Wrap the callback in a transparent mock, to mock asBinder returning a
@@ -599,6 +1115,19 @@
         verify(mMockMDnsM, timeout(cleanupDelayMs + TIMEOUT_MS)).stopDaemon();
     }
 
+    /**
+     * Return true if two service info are the same.
+     *
+     * Useful for argument matchers as {@link NsdServiceInfo} does not implement equals.
+     */
+    private boolean matches(NsdServiceInfo a, NsdServiceInfo b) {
+        return Objects.equals(a.getServiceName(), b.getServiceName())
+                && Objects.equals(a.getServiceType(), b.getServiceType())
+                && Objects.equals(a.getHost(), b.getHost())
+                && Objects.equals(a.getNetwork(), b.getNetwork())
+                && Objects.equals(a.getAttributes(), b.getAttributes());
+    }
+
     public static class TestHandler extends Handler {
         public Message lastMessage;
 
diff --git a/tests/unit/java/com/android/server/VpnManagerServiceTest.java b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
index c8a93a6..deb56ef 100644
--- a/tests/unit/java/com/android/server/VpnManagerServiceTest.java
+++ b/tests/unit/java/com/android/server/VpnManagerServiceTest.java
@@ -131,6 +131,11 @@
                 Vpn vpn, VpnProfile profile) {
             return mLockdownVpnTracker;
         }
+
+        @Override
+        public @UserIdInt int getMainUserId() {
+            return UserHandle.USER_SYSTEM;
+        }
     }
 
     @Before
diff --git a/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
new file mode 100644
index 0000000..6c29d6e
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
@@ -0,0 +1,231 @@
+/*
+ * 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 com.android.server.connectivity;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThrows;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+
+import android.content.Context;
+import android.net.INetd;
+import android.net.MarkMaskParcel;
+import android.os.Build;
+import android.os.HandlerThread;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRunner;
+
+import libcore.util.HexEncoding;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+@RunWith(DevSdkIgnoreRunner.class)
+@SmallTest
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+public class AutomaticOnOffKeepaliveTrackerTest {
+    private static final int TEST_NETID = 0xA85;
+    private static final int TEST_NETID_FWMARK = 0x0A85;
+    private static final int OTHER_NETID = 0x1A85;
+    private static final int NETID_MASK = 0xffff;
+    private AutomaticOnOffKeepaliveTracker mAOOKeepaliveTracker;
+    private HandlerThread mHandlerThread;
+
+    @Mock INetd mNetd;
+    @Mock AutomaticOnOffKeepaliveTracker.Dependencies mDependencies;
+    @Mock Context mCtx;
+    @Mock KeepaliveTracker mKeepaliveTracker;
+
+    // Hexadecimal representation of a SOCK_DIAG response with tcp info.
+    private static final String SOCK_DIAG_TCP_INET_HEX =
+            // struct nlmsghdr.
+            "14010000" +        // length = 276
+            "1400" +            // type = SOCK_DIAG_BY_FAMILY
+            "0301" +            // flags = NLM_F_REQUEST | NLM_F_DUMP
+            "00000000" +        // seqno
+            "00000000" +        // pid (0 == kernel)
+            // struct inet_diag_req_v2
+            "02" +              // family = AF_INET
+            "06" +              // state
+            "00" +              // timer
+            "00" +              // retrans
+            // inet_diag_sockid
+            "DEA5" +            // idiag_sport = 42462
+            "71B9" +            // idiag_dport = 47473
+            "0a006402000000000000000000000000" + // idiag_src = 10.0.100.2
+            "08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
+            "00000000" +            // idiag_if
+            "34ED000076270000" +    // idiag_cookie = 43387759684916
+            "00000000" +            // idiag_expires
+            "00000000" +            // idiag_rqueue
+            "00000000" +            // idiag_wqueue
+            "00000000" +            // idiag_uid
+            "00000000" +            // idiag_inode
+            // rtattr
+            "0500" +            // len = 5
+            "0800" +            // type = 8
+            "00000000" +        // data
+            "0800" +            // len = 8
+            "0F00" +            // type = 15(INET_DIAG_MARK)
+            "850A0C00" +        // data, socket mark=789125
+            "AC00" +            // len = 172
+            "0200" +            // type = 2(INET_DIAG_INFO)
+            // tcp_info
+            "01" +              // state = TCP_ESTABLISHED
+            "00" +              // ca_state = TCP_CA_OPEN
+            "05" +              // retransmits = 5
+            "00" +              // probes = 0
+            "00" +              // backoff = 0
+            "07" +              // option = TCPI_OPT_WSCALE|TCPI_OPT_SACK|TCPI_OPT_TIMESTAMPS
+            "88" +              // wscale = 8
+            "00" +              // delivery_rate_app_limited = 0
+            "4A911B00" +        // rto = 1806666
+            "00000000" +        // ato = 0
+            "2E050000" +        // sndMss = 1326
+            "18020000" +        // rcvMss = 536
+            "00000000" +        // unsacked = 0
+            "00000000" +        // acked = 0
+            "00000000" +        // lost = 0
+            "00000000" +        // retrans = 0
+            "00000000" +        // fackets = 0
+            "BB000000" +        // lastDataSent = 187
+            "00000000" +        // lastAckSent = 0
+            "BB000000" +        // lastDataRecv = 187
+            "BB000000" +        // lastDataAckRecv = 187
+            "DC050000" +        // pmtu = 1500
+            "30560100" +        // rcvSsthresh = 87600
+            "3E2C0900" +        // rttt = 601150
+            "1F960400" +        // rttvar = 300575
+            "78050000" +        // sndSsthresh = 1400
+            "0A000000" +        // sndCwnd = 10
+            "A8050000" +        // advmss = 1448
+            "03000000" +        // reordering = 3
+            "00000000" +        // rcvrtt = 0
+            "30560100" +        // rcvspace = 87600
+            "00000000" +        // totalRetrans = 0
+            "53AC000000000000" +    // pacingRate = 44115
+            "FFFFFFFFFFFFFFFF" +    // maxPacingRate = 18446744073709551615
+            "0100000000000000" +    // bytesAcked = 1
+            "0000000000000000" +    // bytesReceived = 0
+            "0A000000" +        // SegsOut = 10
+            "00000000" +        // SegsIn = 0
+            "00000000" +        // NotSentBytes = 0
+            "3E2C0900" +        // minRtt = 601150
+            "00000000" +        // DataSegsIn = 0
+            "00000000" +        // DataSegsOut = 0
+            "0000000000000000"; // deliverRate = 0
+    private static final String SOCK_DIAG_NO_TCP_INET_HEX =
+            // struct nlmsghdr
+            "14000000"     // length = 20
+            + "0300"         // type = NLMSG_DONE
+            + "0301"         // flags = NLM_F_REQUEST | NLM_F_DUMP
+            + "00000000"     // seqno
+            + "00000000"     // pid (0 == kernel)
+            // struct inet_diag_req_v2
+            + "02"           // family = AF_INET
+            + "06"           // state
+            + "00"           // timer
+            + "00";          // retrans
+    private static final byte[] SOCK_DIAG_NO_TCP_INET_BYTES =
+            HexEncoding.decode(SOCK_DIAG_NO_TCP_INET_HEX.toCharArray(), false);
+    private static final String TEST_RESPONSE_HEX =
+            SOCK_DIAG_TCP_INET_HEX + SOCK_DIAG_NO_TCP_INET_HEX;
+    private static final byte[] TEST_RESPONSE_BYTES =
+            HexEncoding.decode(TEST_RESPONSE_HEX.toCharArray(), false);
+
+    @Before
+    public void setup() throws Exception {
+        MockitoAnnotations.initMocks(this);
+
+        doReturn(mNetd).when(mDependencies).getNetd();
+        doReturn(makeMarkMaskParcel(NETID_MASK, TEST_NETID_FWMARK)).when(mNetd)
+                .getFwmarkForNetwork(TEST_NETID);
+
+        doNothing().when(mDependencies).sendRequest(any(), any());
+
+        mHandlerThread = new HandlerThread("KeepaliveTrackerTest");
+        mHandlerThread.start();
+        doReturn(mKeepaliveTracker).when(mDependencies).newKeepaliveTracker(
+                mCtx, mHandlerThread.getThreadHandler());
+        doReturn(true).when(mDependencies).isFeatureEnabled(any());
+        mAOOKeepaliveTracker = new AutomaticOnOffKeepaliveTracker(
+                mCtx, mHandlerThread.getThreadHandler(), mDependencies);
+    }
+
+    @Test
+    public void testIsAnyTcpSocketConnected_runOnNonHandlerThread() throws Exception {
+        setupResponseWithSocketExisting();
+        assertThrows(IllegalStateException.class,
+                () -> mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID));
+    }
+
+    @Test
+    public void testIsAnyTcpSocketConnected_withTargetNetId() throws Exception {
+        setupResponseWithSocketExisting();
+        mHandlerThread.getThreadHandler().post(
+                () -> assertTrue(mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
+    }
+
+    @Test
+    public void testIsAnyTcpSocketConnected_withIncorrectNetId() throws Exception {
+        setupResponseWithSocketExisting();
+        mHandlerThread.getThreadHandler().post(
+                () -> assertFalse(mAOOKeepaliveTracker.isAnyTcpSocketConnected(OTHER_NETID)));
+    }
+
+    @Test
+    public void testIsAnyTcpSocketConnected_noSocketExists() throws Exception {
+        setupResponseWithoutSocketExisting();
+        mHandlerThread.getThreadHandler().post(
+                () -> assertFalse(mAOOKeepaliveTracker.isAnyTcpSocketConnected(TEST_NETID)));
+    }
+
+    private void setupResponseWithSocketExisting() throws Exception {
+        final ByteBuffer tcpBufferV6 = getByteBuffer(TEST_RESPONSE_BYTES);
+        final ByteBuffer tcpBufferV4 = getByteBuffer(TEST_RESPONSE_BYTES);
+        doReturn(tcpBufferV6, tcpBufferV4).when(mDependencies).recvSockDiagResponse(any());
+    }
+
+    private void setupResponseWithoutSocketExisting() throws Exception {
+        final ByteBuffer tcpBufferV6 = getByteBuffer(SOCK_DIAG_NO_TCP_INET_BYTES);
+        final ByteBuffer tcpBufferV4 = getByteBuffer(SOCK_DIAG_NO_TCP_INET_BYTES);
+        doReturn(tcpBufferV6, tcpBufferV4).when(mDependencies).recvSockDiagResponse(any());
+    }
+
+    private MarkMaskParcel makeMarkMaskParcel(final int mask, final int mark) {
+        final MarkMaskParcel parcel = new MarkMaskParcel();
+        parcel.mask = mask;
+        parcel.mark = mark;
+        return parcel;
+    }
+
+    private ByteBuffer getByteBuffer(final byte[] bytes) {
+        final ByteBuffer buffer = ByteBuffer.wrap(bytes);
+        buffer.order(ByteOrder.nativeOrder());
+        return buffer;
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
new file mode 100644
index 0000000..1febe6d
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
@@ -0,0 +1,233 @@
+/*
+ * 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 com.android.server.connectivity.mdns
+
+import android.net.InetAddresses.parseNumericAddress
+import android.net.LinkAddress
+import android.net.Network
+import android.net.nsd.NsdServiceInfo
+import android.os.Build
+import android.os.Handler
+import android.os.HandlerThread
+import com.android.server.connectivity.mdns.MdnsAdvertiser.AdvertiserCallback
+import com.android.server.connectivity.mdns.MdnsSocketProvider.SocketCallback
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.waitForIdle
+import java.util.Objects
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentCaptor
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mockito.any
+import org.mockito.Mockito.anyInt
+import org.mockito.Mockito.argThat
+import org.mockito.Mockito.atLeastOnce
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
+
+private const val SERVICE_ID_1 = 1
+private const val SERVICE_ID_2 = 2
+private const val TIMEOUT_MS = 10_000L
+private val TEST_ADDR = parseNumericAddress("2001:db8::123")
+private val TEST_LINKADDR = LinkAddress(TEST_ADDR, 64 /* prefixLength */)
+private val TEST_NETWORK_1 = mock(Network::class.java)
+private val TEST_NETWORK_2 = mock(Network::class.java)
+
+private val SERVICE_1 = NsdServiceInfo("TestServiceName", "_advertisertest._tcp").apply {
+    port = 12345
+    host = TEST_ADDR
+    network = TEST_NETWORK_1
+}
+
+private val ALL_NETWORKS_SERVICE = NsdServiceInfo("TestServiceName", "_advertisertest._tcp").apply {
+    port = 12345
+    host = TEST_ADDR
+    network = null
+}
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class MdnsAdvertiserTest {
+    private val thread = HandlerThread(MdnsAdvertiserTest::class.simpleName)
+    private val handler by lazy { Handler(thread.looper) }
+    private val socketProvider = mock(MdnsSocketProvider::class.java)
+    private val cb = mock(AdvertiserCallback::class.java)
+
+    private val mockSocket1 = mock(MdnsInterfaceSocket::class.java)
+    private val mockSocket2 = mock(MdnsInterfaceSocket::class.java)
+    private val mockInterfaceAdvertiser1 = mock(MdnsInterfaceAdvertiser::class.java)
+    private val mockInterfaceAdvertiser2 = mock(MdnsInterfaceAdvertiser::class.java)
+    private val mockDeps = mock(MdnsAdvertiser.Dependencies::class.java)
+
+    @Before
+    fun setUp() {
+        thread.start()
+        doReturn(mockInterfaceAdvertiser1).`when`(mockDeps).makeAdvertiser(eq(mockSocket1),
+                any(), any(), any(), any())
+        doReturn(mockInterfaceAdvertiser2).`when`(mockDeps).makeAdvertiser(eq(mockSocket2),
+                any(), any(), any(), any())
+        doReturn(true).`when`(mockInterfaceAdvertiser1).isProbing(anyInt())
+        doReturn(true).`when`(mockInterfaceAdvertiser2).isProbing(anyInt())
+    }
+
+    @After
+    fun tearDown() {
+        thread.quitSafely()
+    }
+
+    @Test
+    fun testAddService_OneNetwork() {
+        val advertiser = MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps)
+        postSync { advertiser.addService(SERVICE_ID_1, SERVICE_1) }
+
+        val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
+        verify(socketProvider).requestSocket(eq(TEST_NETWORK_1), socketCbCaptor.capture())
+
+        val socketCb = socketCbCaptor.value
+        postSync { socketCb.onSocketCreated(TEST_NETWORK_1, mockSocket1, listOf(TEST_LINKADDR)) }
+
+        val intAdvCbCaptor = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
+        verify(mockDeps).makeAdvertiser(eq(mockSocket1),
+                eq(listOf(TEST_LINKADDR)), eq(thread.looper), any(), intAdvCbCaptor.capture())
+
+        doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
+        postSync { intAdvCbCaptor.value.onRegisterServiceSucceeded(
+                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_1), argThat { it.matches(SERVICE_1) })
+
+        postSync { socketCb.onInterfaceDestroyed(TEST_NETWORK_1, mockSocket1) }
+        verify(mockInterfaceAdvertiser1).destroyNow()
+    }
+
+    @Test
+    fun testAddService_AllNetworks() {
+        val advertiser = MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps)
+        postSync { advertiser.addService(SERVICE_ID_1, ALL_NETWORKS_SERVICE) }
+
+        val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
+        verify(socketProvider).requestSocket(eq(ALL_NETWORKS_SERVICE.network),
+                socketCbCaptor.capture())
+
+        val socketCb = socketCbCaptor.value
+        postSync { socketCb.onSocketCreated(TEST_NETWORK_1, mockSocket1, listOf(TEST_LINKADDR)) }
+        postSync { socketCb.onSocketCreated(TEST_NETWORK_2, mockSocket2, listOf(TEST_LINKADDR)) }
+
+        val intAdvCbCaptor1 = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
+        val intAdvCbCaptor2 = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
+        verify(mockDeps).makeAdvertiser(eq(mockSocket1), eq(listOf(TEST_LINKADDR)),
+                eq(thread.looper), any(), intAdvCbCaptor1.capture())
+        verify(mockDeps).makeAdvertiser(eq(mockSocket2), eq(listOf(TEST_LINKADDR)),
+                eq(thread.looper), any(), intAdvCbCaptor2.capture())
+
+        doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
+        postSync { intAdvCbCaptor1.value.onRegisterServiceSucceeded(
+                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+
+        // Need both advertisers to finish probing and call onRegisterServiceSucceeded
+        verify(cb, never()).onRegisterServiceSucceeded(anyInt(), any())
+        doReturn(false).`when`(mockInterfaceAdvertiser2).isProbing(SERVICE_ID_1)
+        postSync { intAdvCbCaptor2.value.onRegisterServiceSucceeded(
+                mockInterfaceAdvertiser2, SERVICE_ID_1) }
+        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_1),
+                argThat { it.matches(ALL_NETWORKS_SERVICE) })
+
+        // Unregister the service
+        postSync { advertiser.removeService(SERVICE_ID_1) }
+        verify(mockInterfaceAdvertiser1).removeService(SERVICE_ID_1)
+        verify(mockInterfaceAdvertiser2).removeService(SERVICE_ID_1)
+
+        // Interface advertisers call onDestroyed after sending exit announcements
+        postSync { intAdvCbCaptor1.value.onDestroyed(mockSocket1) }
+        verify(socketProvider, never()).unrequestSocket(any())
+        postSync { intAdvCbCaptor2.value.onDestroyed(mockSocket2) }
+        verify(socketProvider).unrequestSocket(socketCb)
+    }
+
+    @Test
+    fun testAddService_Conflicts() {
+        val advertiser = MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps)
+        postSync { advertiser.addService(SERVICE_ID_1, SERVICE_1) }
+
+        val oneNetSocketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
+        verify(socketProvider).requestSocket(eq(TEST_NETWORK_1), oneNetSocketCbCaptor.capture())
+        val oneNetSocketCb = oneNetSocketCbCaptor.value
+
+        // Register a service with the same name on all networks (name conflict)
+        postSync { advertiser.addService(SERVICE_ID_2, ALL_NETWORKS_SERVICE) }
+        val allNetSocketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
+        verify(socketProvider).requestSocket(eq(null), allNetSocketCbCaptor.capture())
+        val allNetSocketCb = allNetSocketCbCaptor.value
+
+        // Callbacks for matching network and all networks both get the socket
+        postSync {
+            oneNetSocketCb.onSocketCreated(TEST_NETWORK_1, mockSocket1, listOf(TEST_LINKADDR))
+            allNetSocketCb.onSocketCreated(TEST_NETWORK_1, mockSocket1, listOf(TEST_LINKADDR))
+        }
+
+        val expectedRenamed = NsdServiceInfo(
+                "${ALL_NETWORKS_SERVICE.serviceName} (2)", ALL_NETWORKS_SERVICE.serviceType).apply {
+            port = ALL_NETWORKS_SERVICE.port
+            host = ALL_NETWORKS_SERVICE.host
+            network = ALL_NETWORKS_SERVICE.network
+        }
+
+        val intAdvCbCaptor = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
+        verify(mockDeps).makeAdvertiser(eq(mockSocket1), eq(listOf(TEST_LINKADDR)),
+                eq(thread.looper), any(), intAdvCbCaptor.capture())
+        verify(mockInterfaceAdvertiser1).addService(eq(SERVICE_ID_1),
+                argThat { it.matches(SERVICE_1) })
+        verify(mockInterfaceAdvertiser1).addService(eq(SERVICE_ID_2),
+                argThat { it.matches(expectedRenamed) })
+
+        doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
+        postSync { intAdvCbCaptor.value.onRegisterServiceSucceeded(
+                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_1), argThat { it.matches(SERVICE_1) })
+
+        doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_2)
+        postSync { intAdvCbCaptor.value.onRegisterServiceSucceeded(
+                mockInterfaceAdvertiser1, SERVICE_ID_2) }
+        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_2),
+                argThat { it.matches(expectedRenamed) })
+
+        postSync { oneNetSocketCb.onInterfaceDestroyed(TEST_NETWORK_1, mockSocket1) }
+        postSync { allNetSocketCb.onInterfaceDestroyed(TEST_NETWORK_1, mockSocket1) }
+
+        // destroyNow can be called multiple times
+        verify(mockInterfaceAdvertiser1, atLeastOnce()).destroyNow()
+    }
+
+    private fun postSync(r: () -> Unit) {
+        handler.post(r)
+        handler.waitForIdle(TIMEOUT_MS)
+    }
+}
+
+// NsdServiceInfo does not implement equals; this is useful to use in argument matchers
+private fun NsdServiceInfo.matches(other: NsdServiceInfo): Boolean {
+    return Objects.equals(serviceName, other.serviceName) &&
+            Objects.equals(serviceType, other.serviceType) &&
+            Objects.equals(attributes, other.attributes) &&
+            Objects.equals(host, other.host) &&
+            port == other.port &&
+            Objects.equals(network, other.network)
+}
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAnnouncerTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAnnouncerTest.kt
index e9325d5..6c3f729 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAnnouncerTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAnnouncerTest.kt
@@ -22,13 +22,11 @@
 import android.os.SystemClock
 import com.android.internal.util.HexDump
 import com.android.server.connectivity.mdns.MdnsAnnouncer.AnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsAnnouncer.BaseAnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsRecordRepository.getReverseDnsAddress
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
 import java.net.DatagramPacket
-import java.net.Inet6Address
-import java.net.InetAddress
-import java.net.InetSocketAddress
-import java.net.MulticastSocket
 import kotlin.test.assertEquals
 import kotlin.test.assertTrue
 import org.junit.After
@@ -38,6 +36,7 @@
 import org.mockito.ArgumentCaptor
 import org.mockito.Mockito.any
 import org.mockito.Mockito.atLeast
+import org.mockito.Mockito.doReturn
 import org.mockito.Mockito.mock
 import org.mockito.Mockito.timeout
 import org.mockito.Mockito.verify
@@ -47,19 +46,17 @@
 private const val NEXT_ANNOUNCES_DELAY = 1L
 private const val TEST_TIMEOUT_MS = 1000L
 
-private val destinationsSupplier = {
-    listOf(InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT)) }
-
 @RunWith(DevSdkIgnoreRunner::class)
 @IgnoreUpTo(Build.VERSION_CODES.S_V2)
 class MdnsAnnouncerTest {
 
     private val thread = HandlerThread(MdnsAnnouncerTest::class.simpleName)
-    private val socket = mock(MulticastSocket::class.java)
+    private val socket = mock(MdnsInterfaceSocket::class.java)
     private val buffer = ByteArray(1500)
 
     @Before
     fun setUp() {
+        doReturn(true).`when`(socket).hasJoinedIpv6()
         thread.start()
     }
 
@@ -71,8 +68,7 @@
     private class TestAnnouncementInfo(
         announcedRecords: List<MdnsRecord>,
         additionalRecords: List<MdnsRecord>
-    )
-        : AnnouncementInfo(announcedRecords, additionalRecords, destinationsSupplier) {
+    ) : AnnouncementInfo(1 /* serviceId */, announcedRecords, additionalRecords) {
         override fun getDelayMs(nextIndex: Int) =
                 if (nextIndex < FIRST_ANNOUNCES_COUNT) {
                     FIRST_ANNOUNCES_DELAY
@@ -83,10 +79,10 @@
 
     @Test
     fun testAnnounce() {
-        val replySender = MdnsReplySender(thread.looper, socket, buffer)
+        val replySender = MdnsReplySender("testiface", thread.looper, socket, buffer)
         @Suppress("UNCHECKED_CAST")
         val cb = mock(MdnsPacketRepeater.PacketRepeaterCallback::class.java)
-                as MdnsPacketRepeater.PacketRepeaterCallback<AnnouncementInfo>
+                as MdnsPacketRepeater.PacketRepeaterCallback<BaseAnnouncementInfo>
         val announcer = MdnsAnnouncer("testiface", thread.looper, replySender, cb)
         /*
         The expected packet replicates records announced when registering a service, as observed in
@@ -95,7 +91,7 @@
         scapy.raw(scapy.dns_compress(scapy.DNS(rd=0, qr=1, aa=1,
         qd = None,
         an =
-        scapy.DNSRR(type='PTR', rrname='123.0.2.192.in-addr.arpa.', rdata='Android.local',
+        scapy.DNSRR(type='PTR', rrname='123.2.0.192.in-addr.arpa.', rdata='Android.local',
             rclass=0x8001, ttl=120) /
         scapy.DNSRR(type='PTR',
             rrname='3.2.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.0.1.0.0.2.ip6.arpa',
@@ -115,8 +111,8 @@
         scapy.DNSRR(type='AAAA', rrname='Android.local', rclass=0x8001, rdata='2001:db8::456',
             ttl=120),
         ar =
-        scapy.DNSRRNSEC(rrname='123.0.2.192.in-addr.arpa.', rclass=0x8001, ttl=120,
-            nextname='123.0.2.192.in-addr.arpa.', typebitmaps=[12]) /
+        scapy.DNSRRNSEC(rrname='123.2.0.192.in-addr.arpa.', rclass=0x8001, ttl=120,
+            nextname='123.2.0.192.in-addr.arpa.', typebitmaps=[12]) /
         scapy.DNSRRNSEC(
             rrname='3.2.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.0.1.0.0.2.ip6.arpa',
             rclass=0x8001, ttl=120,
@@ -135,7 +131,7 @@
             typebitmaps=[1, 28]))
         )).hex().upper()
         */
-        val expected = "00008400000000090000000503313233013001320331393207696E2D61646472046172706" +
+        val expected = "00008400000000090000000503313233013201300331393207696E2D61646472046172706" +
                 "100000C800100000078000F07416E64726F6964056C6F63616C00013301320131013001300130013" +
                 "00130013001300130013001300130013001300130013001300130013001300130013001380142014" +
                 "40130013101300130013203697036C020000C8001000000780002C030013601350134C045000C800" +
@@ -153,9 +149,9 @@
         val v4Addr = parseNumericAddress("192.0.2.123")
         val v6Addr1 = parseNumericAddress("2001:DB8::123")
         val v6Addr2 = parseNumericAddress("2001:DB8::456")
-        val v4AddrRev = arrayOf("123", "0", "2", "192", "in-addr", "arpa")
-        val v6Addr1Rev = getReverseV6AddressName(v6Addr1)
-        val v6Addr2Rev = getReverseV6AddressName(v6Addr2)
+        val v4AddrRev = getReverseDnsAddress(v4Addr)
+        val v6Addr1Rev = getReverseDnsAddress(v6Addr1)
+        val v6Addr2Rev = getReverseDnsAddress(v6Addr2)
 
         val announcedRecords = listOf(
                 // Reverse address records
@@ -258,7 +254,10 @@
             verify(socket, atLeast(i + 1)).send(any())
             val now = SystemClock.elapsedRealtime()
             assertTrue(now > timeStart + startDelay + i * FIRST_ANNOUNCES_DELAY)
-            assertTrue(now < timeStart + startDelay + (i + 1) * FIRST_ANNOUNCES_DELAY)
+            // Loops can be much slower than the expected timing (>100ms delay), use
+            // TEST_TIMEOUT_MS as tolerance.
+            assertTrue(now < timeStart + startDelay + (i + 1) * FIRST_ANNOUNCES_DELAY +
+                TEST_TIMEOUT_MS)
         }
 
         // Subsequent announces should happen quickly (NEXT_ANNOUNCES_DELAY)
@@ -271,13 +270,3 @@
         }
     }
 }
-
-/**
- * Compute 2001:db8::1 --> 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.1.0.0.2.ip6.arpa
- */
-private fun getReverseV6AddressName(addr: InetAddress): Array<String> {
-    assertTrue(addr is Inet6Address)
-    return addr.address.flatMapTo(mutableListOf("arpa", "ip6")) {
-        HexDump.toHexString(it).toCharArray().map(Char::toString)
-    }.reversed().toTypedArray()
-}
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 3e3c3bf..83e7696 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
@@ -46,7 +46,7 @@
     private static final String SERVICE_TYPE_2 = "_test._tcp.local";
 
     @Mock private ExecutorProvider executorProvider;
-    @Mock private MdnsSocketClient socketClient;
+    @Mock private MdnsSocketClientBase socketClient;
     @Mock private MdnsServiceTypeClient mockServiceTypeClientOne;
     @Mock private MdnsServiceTypeClient mockServiceTypeClientTwo;
 
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
new file mode 100644
index 0000000..4a806b1
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsInterfaceAdvertiserTest.kt
@@ -0,0 +1,275 @@
+/*
+ * 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.connectivity.mdns
+
+import android.net.InetAddresses.parseNumericAddress
+import android.net.LinkAddress
+import android.net.nsd.NsdServiceInfo
+import android.os.Build
+import android.os.HandlerThread
+import com.android.net.module.util.HexDump
+import com.android.server.connectivity.mdns.MdnsAnnouncer.AnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsAnnouncer.BaseAnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsAnnouncer.ExitAnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsInterfaceAdvertiser.EXIT_ANNOUNCEMENT_DELAY_MS
+import com.android.server.connectivity.mdns.MdnsPacketRepeater.PacketRepeaterCallback
+import com.android.server.connectivity.mdns.MdnsProber.ProbingInfo
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.waitForIdle
+import java.net.InetSocketAddress
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentCaptor
+import org.mockito.Mockito.any
+import org.mockito.Mockito.anyInt
+import org.mockito.Mockito.anyString
+import org.mockito.Mockito.doAnswer
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.eq
+import org.mockito.Mockito.mock
+import org.mockito.Mockito.times
+import org.mockito.Mockito.verify
+
+private const val LOG_TAG = "testlogtag"
+private const val TIMEOUT_MS = 10_000L
+
+private val TEST_ADDRS = listOf(LinkAddress(parseNumericAddress("2001:db8::123"), 64))
+private val TEST_BUFFER = ByteArray(1300)
+
+private const val TEST_SERVICE_ID_1 = 42
+private val TEST_SERVICE_1 = NsdServiceInfo().apply {
+    serviceType = "_testservice._tcp"
+    serviceName = "MyTestService"
+    port = 12345
+}
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class MdnsInterfaceAdvertiserTest {
+    private val socket = mock(MdnsInterfaceSocket::class.java)
+    private val thread = HandlerThread(MdnsInterfaceAdvertiserTest::class.simpleName)
+    private val cb = mock(MdnsInterfaceAdvertiser.Callback::class.java)
+    private val deps = mock(MdnsInterfaceAdvertiser.Dependencies::class.java)
+    private val repository = mock(MdnsRecordRepository::class.java)
+    private val replySender = mock(MdnsReplySender::class.java)
+    private val announcer = mock(MdnsAnnouncer::class.java)
+    private val prober = mock(MdnsProber::class.java)
+    @Suppress("UNCHECKED_CAST")
+    private val probeCbCaptor = ArgumentCaptor.forClass(PacketRepeaterCallback::class.java)
+            as ArgumentCaptor<PacketRepeaterCallback<ProbingInfo>>
+    @Suppress("UNCHECKED_CAST")
+    private val announceCbCaptor = ArgumentCaptor.forClass(PacketRepeaterCallback::class.java)
+            as ArgumentCaptor<PacketRepeaterCallback<BaseAnnouncementInfo>>
+    private val packetHandlerCaptor = ArgumentCaptor.forClass(
+            MulticastPacketReader.PacketHandler::class.java)
+
+    private val probeCb get() = probeCbCaptor.value
+    private val announceCb get() = announceCbCaptor.value
+    private val packetHandler get() = packetHandlerCaptor.value
+
+    private val advertiser by lazy {
+        MdnsInterfaceAdvertiser(LOG_TAG, socket, TEST_ADDRS, thread.looper, TEST_BUFFER, cb, deps)
+    }
+
+    @Before
+    fun setUp() {
+        doReturn(repository).`when`(deps).makeRecordRepository(any())
+        doReturn(replySender).`when`(deps).makeReplySender(anyString(), any(), any(), any())
+        doReturn(announcer).`when`(deps).makeMdnsAnnouncer(anyString(), any(), any(), any())
+        doReturn(prober).`when`(deps).makeMdnsProber(anyString(), any(), any(), any())
+
+        val knownServices = mutableSetOf<Int>()
+        doAnswer { inv ->
+            knownServices.add(inv.getArgument(0))
+            -1
+        }.`when`(repository).addService(anyInt(), any())
+        doAnswer { inv ->
+            knownServices.remove(inv.getArgument(0))
+            null
+        }.`when`(repository).removeService(anyInt())
+        doAnswer {
+            knownServices.toIntArray().also { knownServices.clear() }
+        }.`when`(repository).clearServices()
+        doAnswer { inv ->
+            knownServices.contains(inv.getArgument(0))
+        }.`when`(repository).hasActiveService(anyInt())
+        thread.start()
+        advertiser.start()
+
+        verify(socket).addPacketHandler(packetHandlerCaptor.capture())
+        verify(deps).makeMdnsProber(any(), any(), any(), probeCbCaptor.capture())
+        verify(deps).makeMdnsAnnouncer(any(), any(), any(), announceCbCaptor.capture())
+    }
+
+    @After
+    fun tearDown() {
+        thread.quitSafely()
+    }
+
+    @Test
+    fun testAddRemoveService() {
+        val testAnnouncementInfo = addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        verify(announcer).startSending(TEST_SERVICE_ID_1, testAnnouncementInfo,
+                0L /* initialDelayMs */)
+
+        thread.waitForIdle(TIMEOUT_MS)
+        verify(cb).onRegisterServiceSucceeded(advertiser, TEST_SERVICE_ID_1)
+
+        // Remove the service: expect exit announcements
+        val testExitInfo = mock(ExitAnnouncementInfo::class.java)
+        doReturn(testExitInfo).`when`(repository).exitService(TEST_SERVICE_ID_1)
+        advertiser.removeService(TEST_SERVICE_ID_1)
+
+        verify(prober).stop(TEST_SERVICE_ID_1)
+        verify(announcer).stop(TEST_SERVICE_ID_1)
+        verify(announcer).startSending(TEST_SERVICE_ID_1, testExitInfo, EXIT_ANNOUNCEMENT_DELAY_MS)
+
+        // Exit announcements finish: the advertiser has no left service and destroys itself
+        announceCb.onFinished(testExitInfo)
+        thread.waitForIdle(TIMEOUT_MS)
+        verify(cb).onDestroyed(socket)
+    }
+
+    @Test
+    fun testDoubleRemove() {
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        val testExitInfo = mock(ExitAnnouncementInfo::class.java)
+        doReturn(testExitInfo).`when`(repository).exitService(TEST_SERVICE_ID_1)
+        advertiser.removeService(TEST_SERVICE_ID_1)
+
+        verify(prober).stop(TEST_SERVICE_ID_1)
+        verify(announcer).stop(TEST_SERVICE_ID_1)
+        verify(announcer).startSending(TEST_SERVICE_ID_1, testExitInfo, EXIT_ANNOUNCEMENT_DELAY_MS)
+
+        doReturn(false).`when`(repository).hasActiveService(TEST_SERVICE_ID_1)
+        advertiser.removeService(TEST_SERVICE_ID_1)
+        // Prober, announcer were still stopped only one time
+        verify(prober, times(1)).stop(TEST_SERVICE_ID_1)
+        verify(announcer, times(1)).stop(TEST_SERVICE_ID_1)
+    }
+
+    @Test
+    fun testReplyToQuery() {
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        val mockReply = mock(MdnsRecordRepository.ReplyInfo::class.java)
+        doReturn(mockReply).`when`(repository).getReply(any(), any())
+
+        // Query obtained with:
+        // scapy.raw(scapy.DNS(
+        //  qd = scapy.DNSQR(qtype='PTR', qname='_testservice._tcp.local'))
+        // ).hex().upper()
+        val query = HexDump.hexStringToByteArray(
+                "0000010000010000000000000C5F7465737473657276696365045F746370056C6F63616C00000C0001"
+        )
+        val src = InetSocketAddress(parseNumericAddress("2001:db8::456"), MdnsConstants.MDNS_PORT)
+        packetHandler.handlePacket(query, query.size, src)
+
+        val packetCaptor = ArgumentCaptor.forClass(MdnsPacket::class.java)
+        verify(repository).getReply(packetCaptor.capture(), eq(src))
+
+        packetCaptor.value.let {
+            assertEquals(1, it.questions.size)
+            assertEquals(0, it.answers.size)
+            assertEquals(0, it.authorityRecords.size)
+            assertEquals(0, it.additionalRecords.size)
+
+            assertTrue(it.questions[0] is MdnsPointerRecord)
+            assertContentEquals(arrayOf("_testservice", "_tcp", "local"), it.questions[0].name)
+        }
+
+        verify(replySender).queueReply(mockReply)
+    }
+
+    @Test
+    fun testConflict() {
+        addServiceAndFinishProbing(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        doReturn(setOf(TEST_SERVICE_ID_1)).`when`(repository).getConflictingServices(any())
+
+        // Reply obtained with:
+        // scapy.raw(scapy.DNS(
+        //    qd = None,
+        //    an = scapy.DNSRR(type='TXT', rrname='_testservice._tcp.local'))
+        // ).hex().upper()
+        val query = HexDump.hexStringToByteArray("0000010000000001000000000C5F7465737473657276696" +
+                "365045F746370056C6F63616C0000100001000000000000")
+        val src = InetSocketAddress(parseNumericAddress("2001:db8::456"), MdnsConstants.MDNS_PORT)
+        packetHandler.handlePacket(query, query.size, src)
+
+        val packetCaptor = ArgumentCaptor.forClass(MdnsPacket::class.java)
+        verify(repository).getConflictingServices(packetCaptor.capture())
+
+        packetCaptor.value.let {
+            assertEquals(0, it.questions.size)
+            assertEquals(1, it.answers.size)
+            assertEquals(0, it.authorityRecords.size)
+            assertEquals(0, it.additionalRecords.size)
+
+            assertTrue(it.answers[0] is MdnsTextRecord)
+            assertContentEquals(arrayOf("_testservice", "_tcp", "local"), it.answers[0].name)
+        }
+
+        thread.waitForIdle(TIMEOUT_MS)
+        verify(cb).onServiceConflict(advertiser, TEST_SERVICE_ID_1)
+    }
+
+    @Test
+    fun testRestartProbingForConflict() {
+        val mockProbingInfo = mock(ProbingInfo::class.java)
+        doReturn(mockProbingInfo).`when`(repository).setServiceProbing(TEST_SERVICE_ID_1)
+
+        advertiser.restartProbingForConflict(TEST_SERVICE_ID_1)
+
+        verify(prober).restartForConflict(mockProbingInfo)
+    }
+
+    @Test
+    fun testRenameServiceForConflict() {
+        val mockProbingInfo = mock(ProbingInfo::class.java)
+        doReturn(mockProbingInfo).`when`(repository).renameServiceForConflict(
+                TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        advertiser.renameServiceForConflict(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+
+        verify(prober).restartForConflict(mockProbingInfo)
+    }
+
+    private fun addServiceAndFinishProbing(serviceId: Int, serviceInfo: NsdServiceInfo):
+            AnnouncementInfo {
+        val testProbingInfo = mock(ProbingInfo::class.java)
+        doReturn(serviceId).`when`(testProbingInfo).serviceId
+        doReturn(testProbingInfo).`when`(repository).setServiceProbing(serviceId)
+
+        advertiser.addService(serviceId, serviceInfo)
+        verify(repository).addService(serviceId, serviceInfo)
+        verify(prober).startProbing(testProbingInfo)
+
+        // Simulate probing success: continues to announcing
+        val testAnnouncementInfo = mock(AnnouncementInfo::class.java)
+        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
new file mode 100644
index 0000000..9d42a65
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
@@ -0,0 +1,161 @@
+/*
+ * 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 com.android.server.connectivity.mdns;
+
+import static com.android.server.connectivity.mdns.MdnsSocketProvider.SocketCallback;
+import static com.android.server.connectivity.mdns.MulticastPacketReader.PacketHandler;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.eq;
+import static org.mockito.Mockito.timeout;
+import static org.mockito.Mockito.verify;
+
+import android.net.InetAddresses;
+import android.net.Network;
+import android.os.Build;
+import android.os.Handler;
+import android.os.HandlerThread;
+
+import com.android.net.module.util.HexDump;
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRunner;
+import com.android.testutils.HandlerUtils;
+
+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.io.IOException;
+import java.lang.reflect.Constructor;
+import java.net.DatagramPacket;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.List;
+
+@RunWith(DevSdkIgnoreRunner.class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
+public class MdnsMultinetworkSocketClientTest {
+    private static final byte[] BUFFER = new byte[10];
+    private static final long DEFAULT_TIMEOUT = 2000L;
+    @Mock private Network mNetwork;
+    @Mock private MdnsSocketProvider mProvider;
+    @Mock private MdnsInterfaceSocket mSocket;
+    @Mock private MdnsServiceBrowserListener mListener;
+    @Mock private MdnsSocketClientBase.Callback mCallback;
+    private MdnsMultinetworkSocketClient mSocketClient;
+    private Handler mHandler;
+
+    @Before
+    public void setUp() throws SocketException {
+        MockitoAnnotations.initMocks(this);
+        final HandlerThread thread = new HandlerThread("MdnsMultinetworkSocketClientTest");
+        thread.start();
+        mHandler = new Handler(thread.getLooper());
+        mSocketClient = new MdnsMultinetworkSocketClient(thread.getLooper(), mProvider);
+        mHandler.post(() -> mSocketClient.setCallback(mCallback));
+    }
+
+    private SocketCallback expectSocketCallback() {
+        final ArgumentCaptor<SocketCallback> callbackCaptor =
+                ArgumentCaptor.forClass(SocketCallback.class);
+        mHandler.post(() -> mSocketClient.notifyNetworkRequested(mListener, mNetwork));
+        verify(mProvider, timeout(DEFAULT_TIMEOUT))
+                .requestSocket(eq(mNetwork), callbackCaptor.capture());
+        return callbackCaptor.getValue();
+    }
+
+    private NetworkInterface createEmptyNetworkInterface() {
+        try {
+            Constructor<NetworkInterface> constructor =
+                    NetworkInterface.class.getDeclaredConstructor();
+            constructor.setAccessible(true);
+            return constructor.newInstance();
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Test
+    public void testSendPacket() throws IOException {
+        final SocketCallback callback = expectSocketCallback();
+        final DatagramPacket ipv4Packet = new DatagramPacket(BUFFER, 0 /* offset */, BUFFER.length,
+                InetAddresses.parseNumericAddress("192.0.2.1"), 0 /* port */);
+        final DatagramPacket ipv6Packet = new DatagramPacket(BUFFER, 0 /* offset */, BUFFER.length,
+                InetAddresses.parseNumericAddress("2001:db8::"), 0 /* port */);
+        doReturn(true).when(mSocket).hasJoinedIpv4();
+        doReturn(true).when(mSocket).hasJoinedIpv6();
+        doReturn(createEmptyNetworkInterface()).when(mSocket).getInterface();
+        // Notify socket created
+        callback.onSocketCreated(mNetwork, mSocket, List.of());
+
+        // Send packet to IPv4 with target network and verify sending has been called.
+        mSocketClient.sendMulticastPacket(ipv4Packet, mNetwork);
+        HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
+        verify(mSocket).send(ipv4Packet);
+
+        // Send packet to IPv6 without target network and verify sending has been called.
+        mSocketClient.sendMulticastPacket(ipv6Packet);
+        HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
+        verify(mSocket).send(ipv6Packet);
+    }
+
+    @Test
+    public void testReceivePacket() {
+        final SocketCallback callback = expectSocketCallback();
+        final byte[] data = HexDump.hexStringToByteArray(
+                // scapy.raw(scapy.dns_compress(
+                //     scapy.DNS(rd=0, qr=1, aa=1, qd = None,
+                //     an =
+                //     scapy.DNSRR(type='PTR', rrname='_testtype._tcp.local',
+                //         rdata='testservice._testtype._tcp.local', rclass='IN', ttl=4500) /
+                //     scapy.DNSRRSRV(rrname='testservice._testtype._tcp.local', rclass=0x8001,
+                //         port=31234, target='Android.local', ttl=120))
+                // )).hex().upper()
+                "000084000000000200000000095F7465737474797065045F746370056C6F63616C00000C0001000011"
+                        + "94000E0B7465737473657276696365C00CC02C00218001000000780010000000007A0207"
+                        + "416E64726F6964C01B");
+
+        doReturn(createEmptyNetworkInterface()).when(mSocket).getInterface();
+        // Notify socket created
+        callback.onSocketCreated(mNetwork, mSocket, List.of());
+
+        final ArgumentCaptor<PacketHandler> handlerCaptor =
+                ArgumentCaptor.forClass(PacketHandler.class);
+        verify(mSocket).addPacketHandler(handlerCaptor.capture());
+
+        // Send the data and verify the received records.
+        final PacketHandler handler = handlerCaptor.getValue();
+        handler.handlePacket(data, data.length, null /* src */);
+        final ArgumentCaptor<MdnsResponse> responseCaptor =
+                ArgumentCaptor.forClass(MdnsResponse.class);
+        verify(mCallback).onResponseReceived(responseCaptor.capture());
+        final MdnsResponse response = responseCaptor.getValue();
+        assertTrue(response.hasPointerRecords());
+        assertArrayEquals("_testtype._tcp.local".split("\\."),
+                response.getPointerRecords().get(0).getName());
+        assertTrue(response.hasServiceRecord());
+        assertEquals("testservice", response.getServiceRecord().getServiceInstanceName());
+        assertEquals("Android.local".split("\\."),
+                response.getServiceRecord().getServiceHost());
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsPacketTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsPacketTest.kt
new file mode 100644
index 0000000..f88da1f
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsPacketTest.kt
@@ -0,0 +1,70 @@
+/*
+ * 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 com.android.server.connectivity.mdns
+
+import android.net.InetAddresses
+import com.android.net.module.util.HexDump
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(DevSdkIgnoreRunner::class)
+class MdnsPacketTest {
+    @Test
+    fun testParseQuery() {
+        // Probe packet with 1 question for Android.local, and 4 additionalRecords with 4 addresses
+        // for Android.local (similar to legacy mdnsresponder probes, although it used to put 4
+        // identical questions(!!) for Android.local when there were 4 addresses).
+        val packetHex = "00000000000100000004000007416e64726f6964056c6f63616c0000ff0001c00c000100" +
+                "01000000780004c000027bc00c001c000100000078001020010db8000000000000000000000123c0" +
+                "0c001c000100000078001020010db8000000000000000000000456c00c001c000100000078001020" +
+                "010db8000000000000000000000789"
+
+        val bytes = HexDump.hexStringToByteArray(packetHex)
+        val reader = MdnsPacketReader(bytes, bytes.size)
+        val packet = MdnsPacket.parse(reader)
+
+        assertEquals(1, packet.questions.size)
+        assertEquals(0, packet.answers.size)
+        assertEquals(4, packet.authorityRecords.size)
+        assertEquals(0, packet.additionalRecords.size)
+
+        val hostname = arrayOf("Android", "local")
+        packet.questions[0].let {
+            assertTrue(it is MdnsAnyRecord)
+            assertContentEquals(hostname, it.name)
+        }
+
+        packet.authorityRecords.forEach {
+            assertTrue(it is MdnsInetAddressRecord)
+            assertContentEquals(hostname, it.name)
+            assertEquals(120000, it.ttl)
+        }
+
+        assertEquals(InetAddresses.parseNumericAddress("192.0.2.123"),
+                (packet.authorityRecords[0] as MdnsInetAddressRecord).inet4Address)
+        assertEquals(InetAddresses.parseNumericAddress("2001:db8::123"),
+                (packet.authorityRecords[1] as MdnsInetAddressRecord).inet6Address)
+        assertEquals(InetAddresses.parseNumericAddress("2001:db8::456"),
+                (packet.authorityRecords[2] as MdnsInetAddressRecord).inet6Address)
+        assertEquals(InetAddresses.parseNumericAddress("2001:db8::789"),
+                (packet.authorityRecords[3] as MdnsInetAddressRecord).inet6Address)
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsProberTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsProberTest.kt
index 419121c..a2dbbc6 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsProberTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsProberTest.kt
@@ -25,8 +25,6 @@
 import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
 import com.android.testutils.DevSdkIgnoreRunner
 import java.net.DatagramPacket
-import java.net.InetSocketAddress
-import java.net.MulticastSocket
 import java.util.concurrent.CompletableFuture
 import java.util.concurrent.TimeUnit
 import kotlin.test.assertEquals
@@ -38,15 +36,13 @@
 import org.mockito.ArgumentCaptor
 import org.mockito.Mockito.any
 import org.mockito.Mockito.atLeast
+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
 
-private val destinationsSupplier = {
-    listOf(InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT)) }
-
 private const val TEST_TIMEOUT_MS = 10_000L
 private const val SHORT_TIMEOUT_MS = 200L
 
@@ -57,7 +53,7 @@
 @IgnoreUpTo(Build.VERSION_CODES.S_V2)
 class MdnsProberTest {
     private val thread = HandlerThread(MdnsProberTest::class.simpleName)
-    private val socket = mock(MulticastSocket::class.java)
+    private val socket = mock(MdnsInterfaceSocket::class.java)
     @Suppress("UNCHECKED_CAST")
     private val cb = mock(MdnsPacketRepeater.PacketRepeaterCallback::class.java)
         as MdnsPacketRepeater.PacketRepeaterCallback<ProbingInfo>
@@ -65,6 +61,7 @@
 
     @Before
     fun setUp() {
+        doReturn(true).`when`(socket).hasJoinedIpv6()
         thread.start()
     }
 
@@ -74,7 +71,7 @@
     }
 
     private class TestProbeInfo(probeRecords: List<MdnsRecord>, private val delayMs: Long = 1L) :
-            ProbingInfo(1 /* serviceId */, probeRecords, destinationsSupplier) {
+            ProbingInfo(1 /* serviceId */, probeRecords) {
         // Just send the packets quickly. Timing-related tests for MdnsPacketRepeater are already
         // done in MdnsAnnouncerTest.
         override fun getDelayMs(nextIndex: Int) = delayMs
@@ -117,7 +114,7 @@
 
     @Test
     fun testProbe() {
-        val replySender = MdnsReplySender(thread.looper, socket, buffer)
+        val replySender = MdnsReplySender("testiface", thread.looper, socket, buffer)
         val prober = TestProber(thread.looper, replySender, cb)
         val probeInfo = TestProbeInfo(
                 listOf(makeServiceRecord(TEST_SERVICE_NAME_1, 37890)))
@@ -132,7 +129,7 @@
 
     @Test
     fun testProbeMultipleRecords() {
-        val replySender = MdnsReplySender(thread.looper, socket, buffer)
+        val replySender = MdnsReplySender("testiface", thread.looper, socket, buffer)
         val prober = TestProber(thread.looper, replySender, cb)
         val probeInfo = TestProbeInfo(listOf(
                 makeServiceRecord(TEST_SERVICE_NAME_1, 37890),
@@ -170,7 +167,7 @@
 
     @Test
     fun testStopProbing() {
-        val replySender = MdnsReplySender(thread.looper, socket, buffer)
+        val replySender = MdnsReplySender("testiface", thread.looper, socket, buffer)
         val prober = TestProber(thread.looper, replySender, cb)
         val probeInfo = TestProbeInfo(
                 listOf(makeServiceRecord(TEST_SERVICE_NAME_1, 37890)),
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
new file mode 100644
index 0000000..ecc11ec
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsRecordRepositoryTest.kt
@@ -0,0 +1,470 @@
+/*
+ * 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 com.android.server.connectivity.mdns
+
+import android.net.InetAddresses.parseNumericAddress
+import android.net.LinkAddress
+import android.net.nsd.NsdServiceInfo
+import android.os.Build
+import android.os.HandlerThread
+import com.android.server.connectivity.mdns.MdnsAnnouncer.AnnouncementInfo
+import com.android.server.connectivity.mdns.MdnsRecordRepository.Dependencies
+import com.android.server.connectivity.mdns.MdnsRecordRepository.getReverseDnsAddress
+import com.android.server.connectivity.mdns.MdnsServiceInfo.TextEntry
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import java.net.InetSocketAddress
+import java.net.NetworkInterface
+import java.util.Collections
+import kotlin.test.assertContentEquals
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertFalse
+import kotlin.test.assertNotNull
+import kotlin.test.assertTrue
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TEST_SERVICE_ID_1 = 42
+private const val TEST_SERVICE_ID_2 = 43
+private const val TEST_PORT = 12345
+private val TEST_HOSTNAME = arrayOf("Android_000102030405060708090A0B0C0D0E0F", "local")
+private val TEST_ADDRESSES = listOf(
+        LinkAddress(parseNumericAddress("192.0.2.111"), 24),
+        LinkAddress(parseNumericAddress("2001:db8::111"), 64),
+        LinkAddress(parseNumericAddress("2001:db8::222"), 64))
+
+private val TEST_SERVICE_1 = NsdServiceInfo().apply {
+    serviceType = "_testservice._tcp"
+    serviceName = "MyTestService"
+    port = TEST_PORT
+}
+
+private val TEST_SERVICE_2 = NsdServiceInfo().apply {
+    serviceType = "_testservice._tcp"
+    serviceName = "MyOtherTestService"
+    port = TEST_PORT
+}
+
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.S_V2)
+class MdnsRecordRepositoryTest {
+    private val thread = HandlerThread(MdnsRecordRepositoryTest::class.simpleName)
+    private val deps = object : Dependencies() {
+        override fun getHostname() = TEST_HOSTNAME
+        override fun getInterfaceInetAddresses(iface: NetworkInterface) =
+                Collections.enumeration(TEST_ADDRESSES.map { it.address })
+    }
+
+    @Before
+    fun setUp() {
+        thread.start()
+    }
+
+    @After
+    fun tearDown() {
+        thread.quitSafely()
+    }
+
+    @Test
+    fun testAddServiceAndProbe() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        assertEquals(0, repository.servicesCount)
+        assertEquals(-1, repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1))
+        assertEquals(1, repository.servicesCount)
+
+        val probingInfo = repository.setServiceProbing(TEST_SERVICE_ID_1)
+        assertNotNull(probingInfo)
+        assertTrue(repository.isProbing(TEST_SERVICE_ID_1))
+
+        assertEquals(TEST_SERVICE_ID_1, probingInfo.serviceId)
+        val packet = probingInfo.getPacket(0)
+
+        assertEquals(MdnsConstants.FLAGS_QUERY, packet.flags)
+        assertEquals(0, packet.answers.size)
+        assertEquals(0, packet.additionalRecords.size)
+
+        assertEquals(1, packet.questions.size)
+        val expectedName = arrayOf("MyTestService", "_testservice", "_tcp", "local")
+        assertEquals(MdnsAnyRecord(expectedName, false /* unicast */), packet.questions[0])
+
+        assertEquals(1, packet.authorityRecords.size)
+        assertEquals(MdnsServiceRecord(expectedName,
+                0L /* receiptTimeMillis */,
+                false /* cacheFlush */,
+                120_000L /* ttlMillis */,
+                0 /* servicePriority */, 0 /* serviceWeight */,
+                TEST_PORT, TEST_HOSTNAME), packet.authorityRecords[0])
+
+        assertContentEquals(intArrayOf(TEST_SERVICE_ID_1), repository.clearServices())
+    }
+
+    @Test
+    fun testAddAndConflicts() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        assertFailsWith(NameConflictException::class) {
+            repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_1)
+        }
+    }
+
+    @Test
+    fun testInvalidReuseOfServiceId() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        assertFailsWith(IllegalArgumentException::class) {
+            repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_2)
+        }
+    }
+
+    @Test
+    fun testHasActiveService() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        assertFalse(repository.hasActiveService(TEST_SERVICE_ID_1))
+
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        assertTrue(repository.hasActiveService(TEST_SERVICE_ID_1))
+
+        val probingInfo = repository.setServiceProbing(TEST_SERVICE_ID_1)
+        repository.onProbingSucceeded(probingInfo)
+        repository.onAdvertisementSent(TEST_SERVICE_ID_1)
+        assertTrue(repository.hasActiveService(TEST_SERVICE_ID_1))
+
+        repository.exitService(TEST_SERVICE_ID_1)
+        assertFalse(repository.hasActiveService(TEST_SERVICE_ID_1))
+    }
+
+    @Test
+    fun testExitAnnouncements() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.onAdvertisementSent(TEST_SERVICE_ID_1)
+
+        val exitAnnouncement = repository.exitService(TEST_SERVICE_ID_1)
+        assertNotNull(exitAnnouncement)
+        assertEquals(1, repository.servicesCount)
+        val packet = exitAnnouncement.getPacket(0)
+
+        assertEquals(0x8400 /* response, authoritative */, packet.flags)
+        assertEquals(0, packet.questions.size)
+        assertEquals(0, packet.authorityRecords.size)
+        assertEquals(0, packet.additionalRecords.size)
+
+        assertContentEquals(listOf(
+                MdnsPointerRecord(
+                        arrayOf("_testservice", "_tcp", "local"),
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        0L /* ttlMillis */,
+                        arrayOf("MyTestService", "_testservice", "_tcp", "local"))
+        ), packet.answers)
+
+        repository.removeService(TEST_SERVICE_ID_1)
+        assertEquals(0, repository.servicesCount)
+    }
+
+    @Test
+    fun testExitingServiceReAdded() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.onAdvertisementSent(TEST_SERVICE_ID_1)
+        repository.exitService(TEST_SERVICE_ID_1)
+
+        assertEquals(TEST_SERVICE_ID_1, repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_1))
+        assertEquals(1, repository.servicesCount)
+
+        repository.removeService(TEST_SERVICE_ID_2)
+        assertEquals(0, repository.servicesCount)
+    }
+
+    @Test
+    fun testOnProbingSucceeded() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        val announcementInfo = repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.onAdvertisementSent(TEST_SERVICE_ID_1)
+        val packet = announcementInfo.getPacket(0)
+
+        assertEquals(0x8400 /* response, authoritative */, packet.flags)
+        assertEquals(0, packet.questions.size)
+        assertEquals(0, packet.authorityRecords.size)
+
+        val serviceType = arrayOf("_testservice", "_tcp", "local")
+        val serviceName = arrayOf("MyTestService", "_testservice", "_tcp", "local")
+        val v4AddrRev = getReverseDnsAddress(TEST_ADDRESSES[0].address)
+        val v6Addr1Rev = getReverseDnsAddress(TEST_ADDRESSES[1].address)
+        val v6Addr2Rev = getReverseDnsAddress(TEST_ADDRESSES[2].address)
+
+        assertContentEquals(listOf(
+                // Reverse address and address records for the hostname
+                MdnsPointerRecord(v4AddrRev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_HOSTNAME),
+                MdnsInetAddressRecord(TEST_HOSTNAME,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_ADDRESSES[0].address),
+                MdnsPointerRecord(v6Addr1Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_HOSTNAME),
+                MdnsInetAddressRecord(TEST_HOSTNAME,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_ADDRESSES[1].address),
+                MdnsPointerRecord(v6Addr2Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_HOSTNAME),
+                MdnsInetAddressRecord(TEST_HOSTNAME,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_ADDRESSES[2].address),
+                // Service registration records (RFC6763)
+                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_HOSTNAME),
+                MdnsTextRecord(
+                        serviceName,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        emptyList() /* entries */),
+                // Service type enumeration record (RFC6763 9.)
+                MdnsPointerRecord(
+                        arrayOf("_services", "_dns-sd", "_udp", "local"),
+                        0L /* receiptTimeMillis */,
+                        false /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        serviceType)
+        ), packet.answers)
+
+        assertContentEquals(listOf(
+                MdnsNsecRecord(v4AddrRev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v4AddrRev,
+                        intArrayOf(MdnsRecord.TYPE_PTR)),
+                MdnsNsecRecord(TEST_HOSTNAME,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        TEST_HOSTNAME,
+                        intArrayOf(MdnsRecord.TYPE_A, MdnsRecord.TYPE_AAAA)),
+                MdnsNsecRecord(v6Addr1Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v6Addr1Rev,
+                        intArrayOf(MdnsRecord.TYPE_PTR)),
+                MdnsNsecRecord(v6Addr2Rev,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        120000L /* ttlMillis */,
+                        v6Addr2Rev,
+                        intArrayOf(MdnsRecord.TYPE_PTR)),
+                MdnsNsecRecord(serviceName,
+                        0L /* receiptTimeMillis */,
+                        true /* cacheFlush */,
+                        4500000L /* ttlMillis */,
+                        serviceName,
+                        intArrayOf(MdnsRecord.TYPE_TXT, MdnsRecord.TYPE_SRV))
+        ), packet.additionalRecords)
+    }
+
+    @Test
+    fun testGetReverseDnsAddress() {
+        val expectedV6 = "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.B.D.0.1.0.0.2.ip6.arpa"
+                .split(".").toTypedArray()
+        assertContentEquals(expectedV6, getReverseDnsAddress(parseNumericAddress("2001:db8::1")))
+        val expectedV4 = "123.2.0.192.in-addr.arpa".split(".").toTypedArray()
+        assertContentEquals(expectedV4, getReverseDnsAddress(parseNumericAddress("192.0.2.123")))
+    }
+
+    @Test
+    fun testGetReply() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.initWithService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        val questions = listOf(MdnsPointerRecord(arrayOf("_testservice", "_tcp", "local"),
+                0L /* receiptTimeMillis */,
+                false /* cacheFlush */,
+                // TTL and data is empty for a question
+                0L /* ttlMillis */,
+                null /* pointer */))
+        val query = MdnsPacket(0 /* flags */, questions, listOf() /* answers */,
+                listOf() /* authorityRecords */, listOf() /* additionalRecords */)
+        val src = InetSocketAddress(parseNumericAddress("192.0.2.123"), 5353)
+        val reply = repository.getReply(query, src)
+
+        assertNotNull(reply)
+        // Source address is IPv4
+        assertEquals(MdnsConstants.getMdnsIPv4Address(), reply.destination.address)
+        assertEquals(MdnsConstants.MDNS_PORT, reply.destination.port)
+
+        // TTLs as per RFC6762 10.
+        val longTtl = 4_500_000L
+        val shortTtl = 120_000L
+        val serviceName = arrayOf("MyTestService", "_testservice", "_tcp", "local")
+
+        assertEquals(listOf(
+                MdnsPointerRecord(
+                        arrayOf("_testservice", "_tcp", "local"),
+                        0L /* receiptTimeMillis */,
+                        false /* cacheFlush */,
+                        longTtl,
+                        serviceName),
+        ), reply.answers)
+
+        assertEquals(listOf(
+            MdnsTextRecord(
+                    serviceName,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    longTtl,
+                    listOf() /* entries */),
+            MdnsServiceRecord(
+                    serviceName,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    shortTtl,
+                    0 /* servicePriority */,
+                    0 /* serviceWeight */,
+                    TEST_PORT,
+                    TEST_HOSTNAME),
+            MdnsInetAddressRecord(
+                    TEST_HOSTNAME,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    shortTtl,
+                    TEST_ADDRESSES[0].address),
+            MdnsInetAddressRecord(
+                    TEST_HOSTNAME,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    shortTtl,
+                    TEST_ADDRESSES[1].address),
+            MdnsInetAddressRecord(
+                    TEST_HOSTNAME,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    shortTtl,
+                    TEST_ADDRESSES[2].address),
+            MdnsNsecRecord(
+                    serviceName,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    longTtl,
+                    serviceName /* nextDomain */,
+                    intArrayOf(MdnsRecord.TYPE_TXT, MdnsRecord.TYPE_SRV)),
+            MdnsNsecRecord(
+                    TEST_HOSTNAME,
+                    0L /* receiptTimeMillis */,
+                    true /* cacheFlush */,
+                    shortTtl,
+                    TEST_HOSTNAME /* nextDomain */,
+                    intArrayOf(MdnsRecord.TYPE_A, MdnsRecord.TYPE_AAAA)),
+        ), reply.additionalAnswers)
+    }
+
+    @Test
+    fun testGetConflictingServices() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_2)
+
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                    MdnsServiceRecord(
+                            arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                            0L /* receiptTimeMillis */, true /* cacheFlush */, 0L /* ttlMillis */,
+                            0 /* servicePriority */, 0 /* serviceWeight */,
+                            TEST_SERVICE_1.port + 1,
+                            TEST_HOSTNAME),
+                    MdnsTextRecord(
+                            arrayOf("MyOtherTestService", "_testservice", "_tcp", "local"),
+                            0L /* receiptTimeMillis */, true /* cacheFlush */, 0L /* ttlMillis */,
+                            listOf(TextEntry.fromString("somedifferent=entry"))),
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        assertEquals(setOf(TEST_SERVICE_ID_1, TEST_SERVICE_ID_2),
+                repository.getConflictingServices(packet))
+    }
+
+    @Test
+    fun testGetConflictingServices_IdenticalService() {
+        val repository = MdnsRecordRepository(thread.looper, deps)
+        repository.addService(TEST_SERVICE_ID_1, TEST_SERVICE_1)
+        repository.addService(TEST_SERVICE_ID_2, TEST_SERVICE_2)
+
+        val otherTtlMillis = 1234L
+        val packet = MdnsPacket(
+                0 /* flags */,
+                emptyList() /* questions */,
+                listOf(
+                        MdnsServiceRecord(
+                                arrayOf("MyTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis, 0 /* servicePriority */, 0 /* serviceWeight */,
+                                TEST_SERVICE_1.port,
+                                TEST_HOSTNAME),
+                        MdnsTextRecord(
+                                arrayOf("MyOtherTestService", "_testservice", "_tcp", "local"),
+                                0L /* receiptTimeMillis */, true /* cacheFlush */,
+                                otherTtlMillis, emptyList()),
+                ) /* answers */,
+                emptyList() /* authorityRecords */,
+                emptyList() /* additionalRecords */)
+
+        // Above records are identical to the actual registrations: no conflict
+        assertEquals(emptySet(), repository.getConflictingServices(packet))
+    }
+}
+
+private fun MdnsRecordRepository.initWithService(serviceId: Int, serviceInfo: NsdServiceInfo):
+        AnnouncementInfo {
+    updateAddresses(TEST_ADDRESSES)
+    addService(serviceId, serviceInfo)
+    val probingInfo = setServiceProbing(serviceId)
+    assertNotNull(probingInfo)
+    return onProbingSucceeded(probingInfo)
+}
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 697116c..a45ca68 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
@@ -62,7 +62,7 @@
 import java.net.DatagramPacket;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
-import java.net.SocketAddress;
+import java.net.InetSocketAddress;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -80,7 +80,10 @@
     private static final int INTERFACE_INDEX = 999;
     private static final String SERVICE_TYPE = "_googlecast._tcp.local";
     private static final String[] SERVICE_TYPE_LABELS = TextUtils.split(SERVICE_TYPE, "\\.");
-    private static final Network NETWORK = mock(Network.class);
+    private static final InetSocketAddress IPV4_ADDRESS = new InetSocketAddress(
+            MdnsConstants.getMdnsIPv4Address(), MdnsConstants.MDNS_PORT);
+    private static final InetSocketAddress IPV6_ADDRESS = new InetSocketAddress(
+            MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT);
 
     @Mock
     private MdnsServiceBrowserListener mockListenerOne;
@@ -89,13 +92,16 @@
     @Mock
     private MdnsPacketWriter mockPacketWriter;
     @Mock
-    private MdnsSocketClient mockSocketClient;
+    private MdnsMultinetworkSocketClient mockSocketClient;
+    @Mock
+    private Network mockNetwork;
     @Captor
     private ArgumentCaptor<MdnsServiceInfo> serviceInfoCaptor;
 
     private final byte[] buf = new byte[10];
 
-    private DatagramPacket[] expectedPackets;
+    private DatagramPacket[] expectedIPv4Packets;
+    private DatagramPacket[] expectedIPv6Packets;
     private ScheduledFuture<?>[] expectedSendFutures;
     private FakeExecutor currentThreadExecutor = new FakeExecutor();
 
@@ -106,30 +112,52 @@
     public void setUp() throws IOException {
         MockitoAnnotations.initMocks(this);
 
-        expectedPackets = new DatagramPacket[16];
+        expectedIPv4Packets = new DatagramPacket[16];
+        expectedIPv6Packets = new DatagramPacket[16];
         expectedSendFutures = new ScheduledFuture<?>[16];
 
         for (int i = 0; i < expectedSendFutures.length; ++i) {
-            expectedPackets[i] = new DatagramPacket(buf, 0, 5);
+            expectedIPv4Packets[i] = new DatagramPacket(buf, 0 /* offset */, 5 /* length */,
+                    MdnsConstants.getMdnsIPv4Address(), MdnsConstants.MDNS_PORT);
+            expectedIPv6Packets[i] = new DatagramPacket(buf, 0 /* offset */, 5 /* length */,
+                    MdnsConstants.getMdnsIPv6Address(), MdnsConstants.MDNS_PORT);
             expectedSendFutures[i] = Mockito.mock(ScheduledFuture.class);
         }
-        when(mockPacketWriter.getPacket(any(SocketAddress.class)))
-                .thenReturn(expectedPackets[0])
-                .thenReturn(expectedPackets[1])
-                .thenReturn(expectedPackets[2])
-                .thenReturn(expectedPackets[3])
-                .thenReturn(expectedPackets[4])
-                .thenReturn(expectedPackets[5])
-                .thenReturn(expectedPackets[6])
-                .thenReturn(expectedPackets[7])
-                .thenReturn(expectedPackets[8])
-                .thenReturn(expectedPackets[9])
-                .thenReturn(expectedPackets[10])
-                .thenReturn(expectedPackets[11])
-                .thenReturn(expectedPackets[12])
-                .thenReturn(expectedPackets[13])
-                .thenReturn(expectedPackets[14])
-                .thenReturn(expectedPackets[15]);
+        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]);
+
+        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]);
 
         client =
                 new MdnsServiceTypeClient(SERVICE_TYPE, mockSocketClient, currentThreadExecutor) {
@@ -282,8 +310,8 @@
         //MdnsConfigsFlagsImpl.alwaysAskForUnicastResponseInEachBurst.override(true);
         MdnsSearchOptions searchOptions =
                 MdnsSearchOptions.newBuilder().addSubtype("12345").setIsPassiveMode(false).build();
-        QueryTaskConfig config =
-                new QueryTaskConfig(searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1);
+        QueryTaskConfig config = new QueryTaskConfig(
+                searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1, mockNetwork);
 
         // This is the first query. We will ask for unicast response.
         assertTrue(config.expectUnicastResponse);
@@ -311,8 +339,8 @@
     public void testQueryTaskConfig_askForUnicastInFirstQuery() {
         MdnsSearchOptions searchOptions =
                 MdnsSearchOptions.newBuilder().addSubtype("12345").setIsPassiveMode(false).build();
-        QueryTaskConfig config =
-                new QueryTaskConfig(searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1);
+        QueryTaskConfig config = new QueryTaskConfig(
+                searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1, mockNetwork);
 
         // This is the first query. We will ask for unicast response.
         assertTrue(config.expectUnicastResponse);
@@ -409,7 +437,7 @@
         MdnsResponse response = mock(MdnsResponse.class);
         when(response.getServiceInstanceName()).thenReturn("service-instance-1");
         doReturn(INTERFACE_INDEX).when(response).getInterfaceIndex();
-        doReturn(NETWORK).when(response).getNetwork();
+        doReturn(mockNetwork).when(response).getNetwork();
         when(response.isComplete()).thenReturn(false);
 
         client.processResponse(response);
@@ -423,7 +451,7 @@
                 List.of() /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         verify(mockListenerOne, never()).onServiceFound(any(MdnsServiceInfo.class));
         verify(mockListenerOne, never()).onServiceUpdated(any(MdnsServiceInfo.class));
@@ -443,7 +471,7 @@
                         /* subtype= */ "ABCDE",
                         Collections.emptyMap(),
                         /* interfaceIndex= */ 20,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(initialResponse);
 
         // Process a second response with a different port and updated text attributes.
@@ -455,7 +483,7 @@
                         /* subtype= */ "ABCDE",
                         Collections.singletonMap("key", "value"),
                         /* interfaceIndex= */ 20,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(secondResponse);
 
         // Verify onServiceNameDiscovered was called once for the initial response.
@@ -469,7 +497,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 20 /* interfaceIndex */,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceFound was called once for the initial response.
         verify(mockListenerOne).onServiceFound(serviceInfoCaptor.capture());
@@ -480,7 +508,7 @@
         assertEquals(initialServiceInfo.getSubtypes(), Collections.singletonList("ABCDE"));
         assertNull(initialServiceInfo.getAttributeByKey("key"));
         assertEquals(initialServiceInfo.getInterfaceIndex(), 20);
-        assertEquals(NETWORK, initialServiceInfo.getNetwork());
+        assertEquals(mockNetwork, initialServiceInfo.getNetwork());
 
         // Verify onServiceUpdated was called once for the second response.
         verify(mockListenerOne).onServiceUpdated(serviceInfoCaptor.capture());
@@ -492,7 +520,7 @@
         assertEquals(updatedServiceInfo.getSubtypes(), Collections.singletonList("ABCDE"));
         assertEquals(updatedServiceInfo.getAttributeByKey("key"), "value");
         assertEquals(updatedServiceInfo.getInterfaceIndex(), 20);
-        assertEquals(NETWORK, updatedServiceInfo.getNetwork());
+        assertEquals(mockNetwork, updatedServiceInfo.getNetwork());
     }
 
     @Test
@@ -509,7 +537,7 @@
                         /* subtype= */ "ABCDE",
                         Collections.emptyMap(),
                         /* interfaceIndex= */ 20,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(initialResponse);
 
         // Process a second response with a different port and updated text attributes.
@@ -521,7 +549,7 @@
                         /* subtype= */ "ABCDE",
                         Collections.singletonMap("key", "value"),
                         /* interfaceIndex= */ 20,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(secondResponse);
 
         System.out.println("secondResponses ip"
@@ -538,7 +566,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 20 /* interfaceIndex */,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceFound was called once for the initial response.
         verify(mockListenerOne).onServiceFound(serviceInfoCaptor.capture());
@@ -549,7 +577,7 @@
         assertEquals(initialServiceInfo.getSubtypes(), Collections.singletonList("ABCDE"));
         assertNull(initialServiceInfo.getAttributeByKey("key"));
         assertEquals(initialServiceInfo.getInterfaceIndex(), 20);
-        assertEquals(NETWORK, initialServiceInfo.getNetwork());
+        assertEquals(mockNetwork, initialServiceInfo.getNetwork());
 
         // Verify onServiceUpdated was called once for the second response.
         verify(mockListenerOne).onServiceUpdated(serviceInfoCaptor.capture());
@@ -561,7 +589,7 @@
         assertEquals(updatedServiceInfo.getSubtypes(), Collections.singletonList("ABCDE"));
         assertEquals(updatedServiceInfo.getAttributeByKey("key"), "value");
         assertEquals(updatedServiceInfo.getInterfaceIndex(), 20);
-        assertEquals(NETWORK, updatedServiceInfo.getNetwork());
+        assertEquals(mockNetwork, updatedServiceInfo.getNetwork());
     }
 
     private void verifyServiceRemovedNoCallback(MdnsServiceBrowserListener listener) {
@@ -599,12 +627,12 @@
                         /* subtype= */ "ABCDE",
                         Collections.emptyMap(),
                         INTERFACE_INDEX,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(initialResponse);
         MdnsResponse response = mock(MdnsResponse.class);
         doReturn("goodbye-service").when(response).getServiceInstanceName();
         doReturn(INTERFACE_INDEX).when(response).getInterfaceIndex();
-        doReturn(NETWORK).when(response).getNetwork();
+        doReturn(mockNetwork).when(response).getNetwork();
         doReturn(true).when(response).isGoodbye();
         client.processResponse(response);
         // Verify removed callback won't be called if the service is not existed.
@@ -615,9 +643,9 @@
         doReturn(serviceName).when(response).getServiceInstanceName();
         client.processResponse(response);
         verifyServiceRemovedCallback(
-                mockListenerOne, serviceName, SERVICE_TYPE_LABELS, INTERFACE_INDEX, NETWORK);
+                mockListenerOne, serviceName, SERVICE_TYPE_LABELS, INTERFACE_INDEX, mockNetwork);
         verifyServiceRemovedCallback(
-                mockListenerTwo, serviceName, SERVICE_TYPE_LABELS, INTERFACE_INDEX, NETWORK);
+                mockListenerTwo, serviceName, SERVICE_TYPE_LABELS, INTERFACE_INDEX, mockNetwork);
     }
 
     @Test
@@ -631,7 +659,7 @@
                         /* subtype= */ "ABCDE",
                         Collections.emptyMap(),
                         INTERFACE_INDEX,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(initialResponse);
 
         client.startSendAndReceive(mockListenerOne, MdnsSearchOptions.getDefaultOptions());
@@ -647,7 +675,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceFound was called once for the existing response.
         verify(mockListenerOne).onServiceFound(serviceInfoCaptor.capture());
@@ -684,7 +712,7 @@
         MdnsResponse initialResponse =
                 createMockResponse(
                         serviceInstanceName, "192.168.1.1", 5353, List.of("ABCDE"),
-                        Map.of(), INTERFACE_INDEX, NETWORK);
+                        Map.of(), INTERFACE_INDEX, mockNetwork);
         client.processResponse(initialResponse);
 
         // Clear the scheduled runnable.
@@ -718,7 +746,7 @@
         MdnsResponse initialResponse =
                 createMockResponse(
                         serviceInstanceName, "192.168.1.1", 5353, List.of("ABCDE"),
-                        Map.of(), INTERFACE_INDEX, NETWORK);
+                        Map.of(), INTERFACE_INDEX, mockNetwork);
         client.processResponse(initialResponse);
 
         // Clear the scheduled runnable.
@@ -737,7 +765,7 @@
 
         // Verify removed callback was called.
         verifyServiceRemovedCallback(mockListenerOne, serviceInstanceName, SERVICE_TYPE_LABELS,
-                INTERFACE_INDEX, NETWORK);
+                INTERFACE_INDEX, mockNetwork);
     }
 
     @Test
@@ -758,7 +786,7 @@
         MdnsResponse initialResponse =
                 createMockResponse(
                         serviceInstanceName, "192.168.1.1", 5353, List.of("ABCDE"),
-                        Map.of(), INTERFACE_INDEX, NETWORK);
+                        Map.of(), INTERFACE_INDEX, mockNetwork);
         client.processResponse(initialResponse);
 
         // Clear the scheduled runnable.
@@ -792,7 +820,7 @@
         MdnsResponse initialResponse =
                 createMockResponse(
                         serviceInstanceName, "192.168.1.1", 5353, List.of("ABCDE"),
-                        Map.of(), INTERFACE_INDEX, NETWORK);
+                        Map.of(), INTERFACE_INDEX, mockNetwork);
         client.processResponse(initialResponse);
 
         // Clear the scheduled runnable.
@@ -804,7 +832,7 @@
 
         // Verify removed callback was called.
         verifyServiceRemovedCallback(mockListenerOne, serviceInstanceName, SERVICE_TYPE_LABELS,
-                INTERFACE_INDEX, NETWORK);
+                INTERFACE_INDEX, mockNetwork);
     }
 
     @Test
@@ -824,7 +852,7 @@
                         "ABCDE" /* subtype */,
                         Collections.emptyMap(),
                         INTERFACE_INDEX,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(initialResponse);
 
         // Process a second response which has ip address to make response become complete.
@@ -836,7 +864,7 @@
                         "ABCDE" /* subtype */,
                         Collections.emptyMap(),
                         INTERFACE_INDEX,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(secondResponse);
 
         // Process a third response with a different ip address, port and updated text attributes.
@@ -848,7 +876,7 @@
                         "ABCDE" /* subtype */,
                         Collections.singletonMap("key", "value"),
                         INTERFACE_INDEX,
-                        NETWORK);
+                        mockNetwork);
         client.processResponse(thirdResponse);
 
         // Process the last response which is goodbye message.
@@ -868,7 +896,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceFound was second called for the second response.
         inOrder.verify(mockListenerOne).onServiceFound(serviceInfoCaptor.capture());
@@ -881,7 +909,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", null) /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceUpdated was third called for the third response.
         inOrder.verify(mockListenerOne).onServiceUpdated(serviceInfoCaptor.capture());
@@ -894,7 +922,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", "value") /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceRemoved was called for the last response.
         inOrder.verify(mockListenerOne).onServiceRemoved(serviceInfoCaptor.capture());
@@ -907,7 +935,7 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", "value") /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
 
         // Verify onServiceNameRemoved was called for the last response.
         inOrder.verify(mockListenerOne).onServiceNameRemoved(serviceInfoCaptor.capture());
@@ -920,18 +948,34 @@
                 Collections.singletonList("ABCDE") /* subTypes */,
                 Collections.singletonMap("key", "value") /* attributes */,
                 INTERFACE_INDEX,
-                NETWORK);
+                mockNetwork);
     }
 
     // verifies that the right query was enqueued with the right delay, and send query by executing
     // the runnable.
     private void verifyAndSendQuery(int index, long timeInMs, boolean expectsUnicastResponse) {
+        verifyAndSendQuery(
+                index, timeInMs, expectsUnicastResponse, true /* multipleSocketDiscovery */);
+    }
+
+    private void verifyAndSendQuery(int index, long timeInMs, boolean expectsUnicastResponse,
+            boolean multipleSocketDiscovery) {
         assertEquals(currentThreadExecutor.getAndClearLastScheduledDelayInMs(), timeInMs);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         if (expectsUnicastResponse) {
-            verify(mockSocketClient).sendUnicastPacket(expectedPackets[index]);
+            verify(mockSocketClient).sendUnicastPacket(
+                    expectedIPv4Packets[index], null /* network */);
+            if (multipleSocketDiscovery) {
+                verify(mockSocketClient).sendUnicastPacket(
+                        expectedIPv6Packets[index], null /* network */);
+            }
         } else {
-            verify(mockSocketClient).sendMulticastPacket(expectedPackets[index]);
+            verify(mockSocketClient).sendMulticastPacket(
+                    expectedIPv4Packets[index], null /* network */);
+            if (multipleSocketDiscovery) {
+                verify(mockSocketClient).sendMulticastPacket(
+                        expectedIPv6Packets[index], null /* network */);
+            }
         }
     }
 
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketProviderTest.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketProviderTest.java
index 2bb61a6a..635b296 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketProviderTest.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketProviderTest.java
@@ -24,6 +24,7 @@
 import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.doCallRealMethod;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.times;
@@ -89,14 +90,22 @@
     public void setUp() throws IOException {
         MockitoAnnotations.initMocks(this);
         mockService(mContext, ConnectivityManager.class, Context.CONNECTIVITY_SERVICE, mCm);
+        if (mContext.getSystemService(ConnectivityManager.class) == null) {
+            // Test is using mockito-extended
+            doCallRealMethod().when(mContext).getSystemService(ConnectivityManager.class);
+        }
         mockService(mContext, TetheringManager.class, Context.TETHERING_SERVICE, mTm);
+        if (mContext.getSystemService(TetheringManager.class) == null) {
+            // Test is using mockito-extended
+            doCallRealMethod().when(mContext).getSystemService(TetheringManager.class);
+        }
         doReturn(true).when(mDeps).canScanOnInterface(any());
         doReturn(mTestNetworkIfaceWrapper).when(mDeps).getNetworkInterfaceByName(TEST_IFACE_NAME);
         doReturn(mLocalOnlyIfaceWrapper).when(mDeps)
                 .getNetworkInterfaceByName(LOCAL_ONLY_IFACE_NAME);
         doReturn(mTetheredIfaceWrapper).when(mDeps).getNetworkInterfaceByName(TETHERED_IFACE_NAME);
         doReturn(mock(MdnsInterfaceSocket.class))
-                .when(mDeps).createMdnsInterfaceSocket(any(), anyInt());
+                .when(mDeps).createMdnsInterfaceSocket(any(), anyInt(), any(), any());
         final HandlerThread thread = new HandlerThread("MdnsSocketProviderTest");
         thread.start();
         mHandler = new Handler(thread.getLooper());
@@ -159,12 +168,13 @@
         }
 
         @Override
-        public void onAddressesChanged(Network network, List<LinkAddress> addresses) {
+        public void onAddressesChanged(Network network, MdnsInterfaceSocket socket,
+                List<LinkAddress> addresses) {
             mHistory.add(new AddressesChangedEvent(network, addresses));
         }
 
         public void expectedSocketCreatedForNetwork(Network network, List<LinkAddress> addresses) {
-            final SocketEvent event = mHistory.poll(DEFAULT_TIMEOUT, c -> true);
+            final SocketEvent event = mHistory.poll(0L /* timeoutMs */, c -> true);
             assertNotNull(event);
             assertTrue(event instanceof SocketCreatedEvent);
             assertEquals(network, event.mNetwork);
@@ -172,7 +182,7 @@
         }
 
         public void expectedInterfaceDestroyedForNetwork(Network network) {
-            final SocketEvent event = mHistory.poll(DEFAULT_TIMEOUT, c -> true);
+            final SocketEvent event = mHistory.poll(0L /* timeoutMs */, c -> true);
             assertNotNull(event);
             assertTrue(event instanceof InterfaceDestroyedEvent);
             assertEquals(network, event.mNetwork);
@@ -180,7 +190,7 @@
 
         public void expectedAddressesChangedForNetwork(Network network,
                 List<LinkAddress> addresses) {
-            final SocketEvent event = mHistory.poll(DEFAULT_TIMEOUT, c -> true);
+            final SocketEvent event = mHistory.poll(0L /* timeoutMs */, c -> true);
             assertNotNull(event);
             assertTrue(event instanceof AddressesChangedEvent);
             assertEquals(network, event.mNetwork);
@@ -259,7 +269,8 @@
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         testCallback1.expectedNoCallback();
         testCallback2.expectedNoCallback();
-        testCallback3.expectedNoCallback();
+        // Expect the socket destroy for tethered interface.
+        testCallback3.expectedInterfaceDestroyedForNetwork(LOCAL_NETWORK);
     }
 
     @Test
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index d7c90d8..13a6a6f 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -2198,7 +2198,7 @@
 
     private NetworkStatsCollection getLegacyCollection(String prefix, boolean includeTags) {
         final NetworkStatsRecorder recorder = makeTestRecorder(mLegacyStatsDir, prefix,
-                mSettings.getDevConfig(), includeTags, false);
+                mSettings.getXtConfig(), includeTags, false);
         return recorder.getOrLoadCompleteLocked();
     }
 
@@ -2255,14 +2255,9 @@
     }
 
     private void mockNetworkStatsSummary(NetworkStats summary) throws Exception {
-        mockNetworkStatsSummaryDev(summary.clone());
         mockNetworkStatsSummaryXt(summary.clone());
     }
 
-    private void mockNetworkStatsSummaryDev(NetworkStats summary) throws Exception {
-        doReturn(summary).when(mStatsFactory).readNetworkStatsSummaryDev();
-    }
-
     private void mockNetworkStatsSummaryXt(NetworkStats summary) throws Exception {
         doReturn(summary).when(mStatsFactory).readNetworkStatsSummaryXt();
     }
@@ -2293,13 +2288,11 @@
         doReturn(false).when(mSettings).getCombineSubtypeEnabled();
 
         final Config config = new Config(bucketDuration, deleteAge, deleteAge);
-        doReturn(config).when(mSettings).getDevConfig();
         doReturn(config).when(mSettings).getXtConfig();
         doReturn(config).when(mSettings).getUidConfig();
         doReturn(config).when(mSettings).getUidTagConfig();
 
         doReturn(MB_IN_BYTES).when(mSettings).getGlobalAlertBytes(anyLong());
-        doReturn(MB_IN_BYTES).when(mSettings).getDevPersistBytes(anyLong());
         doReturn(MB_IN_BYTES).when(mSettings).getXtPersistBytes(anyLong());
         doReturn(MB_IN_BYTES).when(mSettings).getUidPersistBytes(anyLong());
         doReturn(MB_IN_BYTES).when(mSettings).getUidTagPersistBytes(anyLong());
diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index 33e6a60..c881767 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -14,6 +14,13 @@
 //
 // This file is automatically generated by gen_android_bp. Do not edit.
 
+// GN: PACKAGE
+package {
+    default_applicable_licenses: [
+        "external_cronet_license",
+    ],
+}
+
 // GN: //components/cronet/android:cronet_api_java
 java_library {
     name: "cronet_aml_api_java",
@@ -22,46 +29,38 @@
     ],
     libs: [
         "androidx.annotation_annotation",
+        "framework-annotations-lib",
     ],
     sdk_version: "module_current",
 }
 
 // GN: //components/cronet/android:cronet_api_java
+// TODO(danstahr): add the API helpers separately after the main API is checked in and thoroughly reviewed
 filegroup {
     name: "cronet_aml_api_sources",
     srcs: [
         ":cronet_aml_components_cronet_android_interface_api_version",
-        "components/cronet/android/api/src/org/chromium/net/BidirectionalStream.java",
-        "components/cronet/android/api/src/org/chromium/net/CallbackException.java",
-        "components/cronet/android/api/src/org/chromium/net/CronetEngine.java",
-        "components/cronet/android/api/src/org/chromium/net/CronetException.java",
-        "components/cronet/android/api/src/org/chromium/net/ExperimentalBidirectionalStream.java",
-        "components/cronet/android/api/src/org/chromium/net/ExperimentalCronetEngine.java",
-        "components/cronet/android/api/src/org/chromium/net/ExperimentalUrlRequest.java",
-        "components/cronet/android/api/src/org/chromium/net/ICronetEngineBuilder.java",
-        "components/cronet/android/api/src/org/chromium/net/InlineExecutionProhibitedException.java",
-        "components/cronet/android/api/src/org/chromium/net/NetworkException.java",
-        "components/cronet/android/api/src/org/chromium/net/NetworkQualityRttListener.java",
-        "components/cronet/android/api/src/org/chromium/net/NetworkQualityThroughputListener.java",
-        "components/cronet/android/api/src/org/chromium/net/QuicException.java",
-        "components/cronet/android/api/src/org/chromium/net/RequestFinishedInfo.java",
-        "components/cronet/android/api/src/org/chromium/net/UploadDataProvider.java",
-        "components/cronet/android/api/src/org/chromium/net/UploadDataProviders.java",
-        "components/cronet/android/api/src/org/chromium/net/UploadDataSink.java",
-        "components/cronet/android/api/src/org/chromium/net/UrlRequest.java",
-        "components/cronet/android/api/src/org/chromium/net/UrlResponseInfo.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/ByteArrayCronetCallback.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/ContentTypeParametersParser.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/CronetRequestCompletionListener.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/CronetResponse.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/ImplicitFlowControlCallback.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/InMemoryTransformCronetCallback.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/JsonCronetCallback.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/RedirectHandler.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/RedirectHandlers.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/StringCronetCallback.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/UploadDataProviders.java",
-        "components/cronet/android/api/src/org/chromium/net/apihelpers/UrlRequestCallbacks.java",
+        "components/cronet/android/api/src/android/net/http/BidirectionalStream.java",
+        "components/cronet/android/api/src/android/net/http/CallbackException.java",
+        "components/cronet/android/api/src/android/net/http/ConnectionMigrationOptions.java",
+        "components/cronet/android/api/src/android/net/http/DnsOptions.java",
+        "components/cronet/android/api/src/android/net/http/ExperimentalBidirectionalStream.java",
+        "components/cronet/android/api/src/android/net/http/ExperimentalHttpEngine.java",
+        "components/cronet/android/api/src/android/net/http/ExperimentalUrlRequest.java",
+        "components/cronet/android/api/src/android/net/http/HttpEngine.java",
+        "components/cronet/android/api/src/android/net/http/HttpException.java",
+        "components/cronet/android/api/src/android/net/http/IHttpEngineBuilder.java",
+        "components/cronet/android/api/src/android/net/http/InlineExecutionProhibitedException.java",
+        "components/cronet/android/api/src/android/net/http/NetworkException.java",
+        "components/cronet/android/api/src/android/net/http/NetworkQualityRttListener.java",
+        "components/cronet/android/api/src/android/net/http/NetworkQualityThroughputListener.java",
+        "components/cronet/android/api/src/android/net/http/QuicException.java",
+        "components/cronet/android/api/src/android/net/http/QuicOptions.java",
+        "components/cronet/android/api/src/android/net/http/RequestFinishedInfo.java",
+        "components/cronet/android/api/src/android/net/http/UploadDataProvider.java",
+        "components/cronet/android/api/src/android/net/http/UploadDataSink.java",
+        "components/cronet/android/api/src/android/net/http/UrlRequest.java",
+        "components/cronet/android/api/src/android/net/http/UrlResponseInfo.java",
     ],
 }
 
@@ -382,7 +381,9 @@
          "--input_file " +
          "java/lang/Runtime.class " +
          "--javap " +
-         "$$(find out/.path -name javap)",
+         "$$(find out/.path -name javap) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "base/android_runtime_jni_headers/Runnable_jni.h",
         "base/android_runtime_jni_headers/Runtime_jni.h",
@@ -1091,6 +1092,7 @@
         "base/android/java/src/org/chromium/base/MemoryPressureListener.java",
         "base/android/java/src/org/chromium/base/PathService.java",
         "base/android/java/src/org/chromium/base/PathUtils.java",
+        "base/android/java/src/org/chromium/base/PiiElider.java",
         "base/android/java/src/org/chromium/base/PowerMonitor.java",
         "base/android/java/src/org/chromium/base/RadioUtils.java",
         "base/android/java/src/org/chromium/base/SysUtils.java",
@@ -1164,6 +1166,8 @@
          "--output_name " +
          "PathUtils_jni.h " +
          "--output_name " +
+         "PiiElider_jni.h " +
+         "--output_name " +
          "PowerMonitor_jni.h " +
          "--output_name " +
          "RadioUtils_jni.h " +
@@ -1244,6 +1248,8 @@
          "--input_file " +
          "$(location base/android/java/src/org/chromium/base/PathUtils.java) " +
          "--input_file " +
+         "$(location base/android/java/src/org/chromium/base/PiiElider.java) " +
+         "--input_file " +
          "$(location base/android/java/src/org/chromium/base/PowerMonitor.java) " +
          "--input_file " +
          "$(location base/android/java/src/org/chromium/base/RadioUtils.java) " +
@@ -1274,7 +1280,9 @@
          "--input_file " +
          "$(location base/android/java/src/org/chromium/base/task/PostTask.java) " +
          "--input_file " +
-         "$(location base/android/java/src/org/chromium/base/task/TaskRunnerImpl.java)",
+         "$(location base/android/java/src/org/chromium/base/task/TaskRunnerImpl.java) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "base/base_jni_headers/ApkAssets_jni.h",
         "base/base_jni_headers/ApplicationStatus_jni.h",
@@ -1306,6 +1314,7 @@
         "base/base_jni_headers/NativeUmaRecorder_jni.h",
         "base/base_jni_headers/PathService_jni.h",
         "base/base_jni_headers/PathUtils_jni.h",
+        "base/base_jni_headers/PiiElider_jni.h",
         "base/base_jni_headers/PostTask_jni.h",
         "base/base_jni_headers/PowerMonitor_jni.h",
         "base/base_jni_headers/RadioUtils_jni.h",
@@ -1384,7 +1393,7 @@
 cc_genrule {
     name: "cronet_aml_base_build_date",
     cmd: "$(location build/write_build_date_header.py) $(out) " +
-         "1670130000",
+         "1672549200",
     out: [
         "base/generated_build_date.h",
     ],
@@ -1530,7 +1539,7 @@
 // GN: //base:ios_cronet_buildflags
 cc_genrule {
     name: "cronet_aml_base_ios_cronet_buildflags",
-    cmd: "echo '--flags CRONET_BUILD=\"false\"' | " +
+    cmd: "echo '--flags CRONET_BUILD=\"true\"' | " +
          "$(location build/write_buildflag_header.py) --output " +
          "$(out) " +
          "--rulename " +
@@ -2361,8 +2370,6 @@
         ":cronet_aml_components_cronet_android_cronet_static",
         ":cronet_aml_components_cronet_cronet_common",
         ":cronet_aml_components_cronet_metrics_util",
-        ":cronet_aml_components_cronet_native_cronet_native_impl",
-        ":cronet_aml_components_grpc_support_grpc_support",
         ":cronet_aml_components_metrics_library_support",
         "components/cronet/android/cronet_jni.cc",
     ],
@@ -2452,8 +2459,8 @@
         "third_party/protobuf/src/",
     ],
     cpp_std: "c++17",
-    linker_scripts: [
-        "base/android/library_loader/anchor_functions.lds",
+    ldflags: [
+        "-Wl,--script,external/cronet/base/android/library_loader/anchor_functions.lds",
     ],
     stem: "libcronet.108.0.5359.128",
     target: {
@@ -2506,7 +2513,9 @@
          "--input_file " +
          "$(location components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequest.java) " +
          "--input_file " +
-         "$(location components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java)",
+         "$(location components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "components/cronet/android/cronet_jni_headers/CronetBidirectionalStream_jni.h",
         "components/cronet/android/cronet_jni_headers/CronetLibraryLoader_jni.h",
@@ -2557,7 +2566,6 @@
         "base/android/java/src/org/chromium/base/Function.java",
         "base/android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
         "base/android/java/src/org/chromium/base/IntStringCallback.java",
-        "base/android/java/src/org/chromium/base/IntentUtils.java",
         "base/android/java/src/org/chromium/base/JNIUtils.java",
         "base/android/java/src/org/chromium/base/JavaExceptionReporter.java",
         "base/android/java/src/org/chromium/base/JavaHandlerThread.java",
@@ -2651,19 +2659,6 @@
         "base/android/java/src/org/chromium/base/metrics/TimingMetric.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorder.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorderHolder.java",
-        "base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java",
-        "base/android/java/src/org/chromium/base/process_launcher/BindService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildConnectionAllocator.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionFactory.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionImpl.java",
-        "base/android/java/src/org/chromium/base/process_launcher/FileDescriptorInfo.java",
         "base/android/java/src/org/chromium/base/supplier/BooleanSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/DestroyableObservableSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/ObservableSupplier.java",
@@ -2713,8 +2708,6 @@
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUploadDataStream.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequest.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUploadDataSinkBase.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUrlRequestUtils.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NativeCronetEngineBuilderImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NetworkExceptionImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NoOpLogger.java",
@@ -2775,6 +2768,8 @@
          "--header-path " +
          "$(genDir)/components/cronet/android/cronet_jni_registration.h " +
          "--manual_jni_registration " +
+         "--package_prefix " +
+         "android.net.http.internal " +
          ";sed -i -e 's/OUT_SOONG_.TEMP_SBOX_.*_OUT/GEN/g'  " +
          "$(genDir)/components/cronet/android/cronet_jni_registration.h",
     out: [
@@ -2824,7 +2819,6 @@
         "base/android/java/src/org/chromium/base/Function.java",
         "base/android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
         "base/android/java/src/org/chromium/base/IntStringCallback.java",
-        "base/android/java/src/org/chromium/base/IntentUtils.java",
         "base/android/java/src/org/chromium/base/JNIUtils.java",
         "base/android/java/src/org/chromium/base/JavaExceptionReporter.java",
         "base/android/java/src/org/chromium/base/JavaHandlerThread.java",
@@ -2918,19 +2912,6 @@
         "base/android/java/src/org/chromium/base/metrics/TimingMetric.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorder.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorderHolder.java",
-        "base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java",
-        "base/android/java/src/org/chromium/base/process_launcher/BindService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildConnectionAllocator.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionFactory.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionImpl.java",
-        "base/android/java/src/org/chromium/base/process_launcher/FileDescriptorInfo.java",
         "base/android/java/src/org/chromium/base/supplier/BooleanSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/DestroyableObservableSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/ObservableSupplier.java",
@@ -2980,8 +2961,6 @@
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUploadDataStream.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequest.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUploadDataSinkBase.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUrlRequestUtils.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NativeCronetEngineBuilderImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NetworkExceptionImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NoOpLogger.java",
@@ -3042,6 +3021,8 @@
          "--header-path " +
          "$(genDir)/components/cronet/android/cronet_jni_registration.h " +
          "--manual_jni_registration " +
+         "--package_prefix " +
+         "android.net.http.internal " +
          ";sed -i -e 's/OUT_SOONG_.TEMP_SBOX_.*_OUT/GEN/g'  " +
          "$(genDir)/components/cronet/android/cronet_jni_registration.h",
     out: [
@@ -3134,9 +3115,6 @@
         "buildtools/third_party/libc++/",
         "buildtools/third_party/libc++/trunk/include",
         "buildtools/third_party/libc++abi/trunk/include",
-        "components/cronet/native/generated/",
-        "components/cronet/native/include/",
-        "components/grpc_support/include/",
         "net/third_party/quiche/overrides/",
         "net/third_party/quiche/src/",
         "net/third_party/quiche/src/quiche/common/platform/default/",
@@ -3255,7 +3233,7 @@
          "'API_LEVEL=19' " +
          "-o " +
          "$(out) " +
-         "$(location components/cronet/android/api/src/org/chromium/net/ApiVersion.template)",
+         "$(location components/cronet/android/api/src/android/net/http/ApiVersion.template)",
     out: [
         "components/cronet/android/templates/org/chromium/net/ApiVersion.java",
     ],
@@ -3264,7 +3242,7 @@
         "build/util/android_chrome_version.py",
         "build/util/version.py",
         "chrome/VERSION",
-        "components/cronet/android/api/src/org/chromium/net/ApiVersion.template",
+        "components/cronet/android/api/src/android/net/http/ApiVersion.template",
     ],
 }
 
@@ -3609,186 +3587,6 @@
     },
 }
 
-// GN: //components/cronet/native:cronet_native_impl
-cc_object {
-    name: "cronet_aml_components_cronet_native_cronet_native_impl",
-    srcs: [
-        "components/cronet/native/buffer.cc",
-        "components/cronet/native/engine.cc",
-        "components/cronet/native/generated/cronet.idl_impl_interface.cc",
-        "components/cronet/native/generated/cronet.idl_impl_struct.cc",
-        "components/cronet/native/io_buffer_with_cronet_buffer.cc",
-        "components/cronet/native/native_metrics_util.cc",
-        "components/cronet/native/runnables.cc",
-        "components/cronet/native/upload_data_sink.cc",
-        "components/cronet/native/url_request.cc",
-    ],
-    shared_libs: [
-        "libandroid",
-        "liblog",
-        "libz",
-    ],
-    static_libs: [
-        "cronet_aml_base_allocator_partition_allocator_partition_alloc",
-        "cronet_aml_base_base",
-        "cronet_aml_base_base_static",
-        "cronet_aml_base_third_party_double_conversion_double_conversion",
-        "cronet_aml_base_third_party_dynamic_annotations_dynamic_annotations",
-        "cronet_aml_components_prefs_prefs",
-        "cronet_aml_crypto_crypto",
-        "cronet_aml_net_net",
-        "cronet_aml_net_preload_decoder",
-        "cronet_aml_net_third_party_quiche_quiche",
-        "cronet_aml_net_uri_template",
-        "cronet_aml_third_party_boringssl_boringssl",
-        "cronet_aml_third_party_brotli_common",
-        "cronet_aml_third_party_brotli_dec",
-        "cronet_aml_third_party_icu_icui18n",
-        "cronet_aml_third_party_icu_icuuc_private",
-        "cronet_aml_third_party_libevent_libevent",
-        "cronet_aml_third_party_modp_b64_modp_b64",
-        "cronet_aml_third_party_protobuf_protobuf_lite",
-        "cronet_aml_url_url",
-    ],
-    generated_headers: [
-        "cronet_aml_components_cronet_cronet_buildflags",
-        "cronet_aml_components_cronet_cronet_version_header_action",
-        "cronet_aml_third_party_metrics_proto_metrics_proto_gen_headers",
-    ],
-    defaults: [
-        "cronet_aml_defaults",
-    ],
-    cflags: [
-        "-DANDROID",
-        "-DANDROID_NDK_VERSION_ROLL=r23_1",
-        "-DCR_CLANG_REVISION=\"llvmorg-16-init-6578-g0d30e92f-2\"",
-        "-DCR_LIBCXX_REVISION=64d36e572d3f9719c5d75011a718f33f11126851",
-        "-DDCHECK_ALWAYS_ON=1",
-        "-DDYNAMIC_ANNOTATIONS_ENABLED=1",
-        "-DGOOGLE_PROTOBUF_INTERNAL_DONATE_STEAL_INLINE=0",
-        "-DGOOGLE_PROTOBUF_NO_RTTI",
-        "-DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER",
-        "-DHAVE_PTHREAD",
-        "-DHAVE_SYS_UIO_H",
-        "-D_DEBUG",
-        "-D_GNU_SOURCE",
-        "-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS",
-        "-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS",
-        "-D__STDC_CONSTANT_MACROS",
-        "-D__STDC_FORMAT_MACROS",
-    ],
-    local_include_dirs: [
-        "./",
-        "buildtools/third_party/libc++/",
-        "buildtools/third_party/libc++/trunk/include",
-        "buildtools/third_party/libc++abi/trunk/include",
-        "components/cronet/native/generated/",
-        "components/cronet/native/include/",
-        "components/grpc_support/include/",
-        "net/third_party/quiche/overrides/",
-        "net/third_party/quiche/src/",
-        "net/third_party/quiche/src/quiche/common/platform/default/",
-        "third_party/abseil-cpp/",
-        "third_party/boringssl/src/include/",
-        "third_party/protobuf/src/",
-    ],
-    cpp_std: "c++17",
-    target: {
-        android_x86: {
-            cflags: [
-                "-msse3",
-            ],
-        },
-        android_x86_64: {
-            cflags: [
-                "-msse3",
-            ],
-        },
-    },
-}
-
-// GN: //components/grpc_support:grpc_support
-cc_object {
-    name: "cronet_aml_components_grpc_support_grpc_support",
-    srcs: [
-        "components/grpc_support/bidirectional_stream.cc",
-        "components/grpc_support/bidirectional_stream_c.cc",
-    ],
-    shared_libs: [
-        "libandroid",
-        "liblog",
-        "libz",
-    ],
-    static_libs: [
-        "cronet_aml_base_allocator_partition_allocator_partition_alloc",
-        "cronet_aml_base_base",
-        "cronet_aml_base_base_static",
-        "cronet_aml_base_third_party_double_conversion_double_conversion",
-        "cronet_aml_base_third_party_dynamic_annotations_dynamic_annotations",
-        "cronet_aml_crypto_crypto",
-        "cronet_aml_net_net",
-        "cronet_aml_net_preload_decoder",
-        "cronet_aml_net_third_party_quiche_quiche",
-        "cronet_aml_net_uri_template",
-        "cronet_aml_third_party_boringssl_boringssl",
-        "cronet_aml_third_party_brotli_common",
-        "cronet_aml_third_party_brotli_dec",
-        "cronet_aml_third_party_icu_icui18n",
-        "cronet_aml_third_party_icu_icuuc_private",
-        "cronet_aml_third_party_libevent_libevent",
-        "cronet_aml_third_party_modp_b64_modp_b64",
-        "cronet_aml_third_party_protobuf_protobuf_lite",
-        "cronet_aml_url_url",
-    ],
-    defaults: [
-        "cronet_aml_defaults",
-    ],
-    cflags: [
-        "-DANDROID",
-        "-DANDROID_NDK_VERSION_ROLL=r23_1",
-        "-DCR_CLANG_REVISION=\"llvmorg-16-init-6578-g0d30e92f-2\"",
-        "-DCR_LIBCXX_REVISION=64d36e572d3f9719c5d75011a718f33f11126851",
-        "-DDCHECK_ALWAYS_ON=1",
-        "-DDYNAMIC_ANNOTATIONS_ENABLED=1",
-        "-DGOOGLE_PROTOBUF_INTERNAL_DONATE_STEAL_INLINE=0",
-        "-DGOOGLE_PROTOBUF_NO_RTTI",
-        "-DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER",
-        "-DHAVE_PTHREAD",
-        "-DHAVE_SYS_UIO_H",
-        "-D_DEBUG",
-        "-D_GNU_SOURCE",
-        "-D_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS",
-        "-D_LIBCXXABI_DISABLE_VISIBILITY_ANNOTATIONS",
-        "-D__STDC_CONSTANT_MACROS",
-        "-D__STDC_FORMAT_MACROS",
-    ],
-    local_include_dirs: [
-        "./",
-        "buildtools/third_party/libc++/",
-        "buildtools/third_party/libc++/trunk/include",
-        "buildtools/third_party/libc++abi/trunk/include",
-        "net/third_party/quiche/overrides/",
-        "net/third_party/quiche/src/",
-        "net/third_party/quiche/src/quiche/common/platform/default/",
-        "third_party/abseil-cpp/",
-        "third_party/boringssl/src/include/",
-        "third_party/protobuf/src/",
-    ],
-    cpp_std: "c++17",
-    target: {
-        android_x86: {
-            cflags: [
-                "-msse3",
-            ],
-        },
-        android_x86_64: {
-            cflags: [
-                "-msse3",
-            ],
-        },
-    },
-}
-
 // GN: //components/metrics:library_support
 cc_object {
     name: "cronet_aml_components_metrics_library_support",
@@ -3880,7 +3678,9 @@
          "--output_name " +
          "PrefService_jni.h " +
          "--input_file " +
-         "$(location components/prefs/android/java/src/org/chromium/components/prefs/PrefService.java)",
+         "$(location components/prefs/android/java/src/org/chromium/components/prefs/PrefService.java) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "components/prefs/android/jni_headers/PrefService_jni.h",
     ],
@@ -4195,7 +3995,6 @@
         "base/android/java/src/org/chromium/base/Function.java",
         "base/android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
         "base/android/java/src/org/chromium/base/IntStringCallback.java",
-        "base/android/java/src/org/chromium/base/IntentUtils.java",
         "base/android/java/src/org/chromium/base/JNIUtils.java",
         "base/android/java/src/org/chromium/base/JavaExceptionReporter.java",
         "base/android/java/src/org/chromium/base/JavaHandlerThread.java",
@@ -4289,21 +4088,6 @@
         "base/android/java/src/org/chromium/base/metrics/TimingMetric.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorder.java",
         "base/android/java/src/org/chromium/base/metrics/UmaRecorderHolder.java",
-        "base/android/java/src/org/chromium/base/multidex/ChromiumMultiDexInstaller.java",
-        "base/android/java/src/org/chromium/base/process_launcher/BindService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildConnectionAllocator.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessConstants.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessLauncher.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessService.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildProcessServiceDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnection.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionDelegate.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionFactory.java",
-        "base/android/java/src/org/chromium/base/process_launcher/ChildServiceConnectionImpl.java",
-        "base/android/java/src/org/chromium/base/process_launcher/FileDescriptorInfo.java",
-        "base/android/java/src/org/chromium/base/process_launcher/IChildProcessService.aidl",
-        "base/android/java/src/org/chromium/base/process_launcher/IParentProcess.aidl",
         "base/android/java/src/org/chromium/base/supplier/BooleanSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/DestroyableObservableSupplier.java",
         "base/android/java/src/org/chromium/base/supplier/ObservableSupplier.java",
@@ -4353,8 +4137,6 @@
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUploadDataStream.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequest.java",
         "components/cronet/android/java/src/org/chromium/net/impl/CronetUrlRequestContext.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUploadDataSinkBase.java",
-        "components/cronet/android/java/src/org/chromium/net/impl/JavaUrlRequestUtils.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NativeCronetEngineBuilderImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NetworkExceptionImpl.java",
         "components/cronet/android/java/src/org/chromium/net/impl/NoOpLogger.java",
@@ -4399,16 +4181,16 @@
         "net/android/java/src/org/chromium/net/X509Util.java",
         "url/android/java/src/org/chromium/url/IDNStringUtil.java",
     ],
+    static_libs: [
+        "modules-utils-build_system",
+    ],
     apex_available: [
-        "//apex_available:platform",
         "com.android.tethering",
     ],
+    min_sdk_version: "30",
     libs: [
-        "android-support-multidex",
         "androidx.annotation_annotation",
         "androidx.annotation_annotation-experimental-nodeps",
-        "androidx.collection_collection",
-        "androidx.core_core-nodeps",
         "cronet_aml_api_java",
         "framework-connectivity-t.stubs.module_lib",
         "framework-connectivity.stubs.module_lib",
@@ -4431,6 +4213,7 @@
     sdk_version: "module_current",
     javacflags: [
         "-Aorg.chromium.chrome.skipGenJni",
+        "-Apackage_prefix=android.net.http.internal",
     ],
 }
 
@@ -4995,7 +4778,7 @@
 // GN: //net:ios_cronet_buildflags
 cc_genrule {
     name: "cronet_aml_net_ios_cronet_buildflags",
-    cmd: "echo '--flags CRONET_BUILD=\"false\"' | " +
+    cmd: "echo '--flags CRONET_BUILD=\"true\"' | " +
          "$(location build/write_buildflag_header.py) --output " +
          "$(out) " +
          "--rulename " +
@@ -5836,7 +5619,9 @@
          "--input_file " +
          "$(location net/android/java/src/org/chromium/net/ProxyChangeListener.java) " +
          "--input_file " +
-         "$(location net/android/java/src/org/chromium/net/X509Util.java)",
+         "$(location net/android/java/src/org/chromium/net/X509Util.java) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "net/net_jni_headers/AndroidCertVerifyResult_jni.h",
         "net/net_jni_headers/AndroidKeyStore_jni.h",
@@ -10838,7 +10623,9 @@
          "--input_file " +
          "$(location url/android/java/src/org/chromium/url/IDNStringUtil.java) " +
          "--input_file " +
-         "$(location url/android/java/src/org/chromium/url/Origin.java)",
+         "$(location url/android/java/src/org/chromium/url/Origin.java) " +
+         "--package_prefix " +
+         "android.net.http.internal",
     out: [
         "url/url_jni_headers/IDNStringUtil_jni.h",
         "url/url_jni_headers/Origin_jni.h",
@@ -10855,3 +10642,55 @@
     ],
 }
 
+// GN: LICENSE
+license {
+    name: "external_cronet_license",
+    license_kinds: [
+        "SPDX-license-identifier-AFL-2.0",
+        "SPDX-license-identifier-Apache-2.0",
+        "SPDX-license-identifier-BSD",
+        "SPDX-license-identifier-BSL-1.0",
+        "SPDX-license-identifier-GPL",
+        "SPDX-license-identifier-GPL-2.0",
+        "SPDX-license-identifier-GPL-3.0",
+        "SPDX-license-identifier-ICU",
+        "SPDX-license-identifier-ISC",
+        "SPDX-license-identifier-LGPL",
+        "SPDX-license-identifier-LGPL-2.1",
+        "SPDX-license-identifier-MIT",
+        "SPDX-license-identifier-MPL",
+        "SPDX-license-identifier-MPL-2.0",
+        "SPDX-license-identifier-NCSA",
+        "SPDX-license-identifier-OpenSSL",
+        "SPDX-license-identifier-Unicode-DFS",
+        "legacy_unencumbered",
+    ],
+    license_text: [
+        "LICENSE",
+        "base/third_party/double_conversion/LICENSE",
+        "base/third_party/dynamic_annotations/LICENSE",
+        "base/third_party/icu/LICENSE",
+        "base/third_party/nspr/LICENSE",
+        "base/third_party/superfasthash/LICENSE",
+        "base/third_party/symbolize/LICENSE",
+        "base/third_party/valgrind/LICENSE",
+        "base/third_party/xdg_user_dirs/LICENSE",
+        "net/third_party/quiche/src/LICENSE",
+        "net/third_party/uri_template/LICENSE",
+        "third_party/abseil-cpp/LICENSE",
+        "third_party/ashmem/LICENSE",
+        "third_party/boringssl/src/LICENSE",
+        "third_party/boringssl/src/third_party/fiat/LICENSE",
+        "third_party/boringssl/src/third_party/googletest/LICENSE",
+        "third_party/boringssl/src/third_party/wycheproof_testvectors/LICENSE",
+        "third_party/brotli/LICENSE",
+        "third_party/icu/LICENSE",
+        "third_party/icu/scripts/LICENSE",
+        "third_party/libevent/LICENSE",
+        "third_party/metrics_proto/LICENSE",
+        "third_party/modp_b64/LICENSE",
+        "third_party/protobuf/LICENSE",
+        "third_party/protobuf/third_party/utf8_range/LICENSE",
+    ],
+}
+
diff --git a/tools/gn2bp/desc_arm.json b/tools/gn2bp/desc_arm.json
index dcfcd63..aa76d1c 100644
--- a/tools/gn2bp/desc_arm.json
+++ b/tools/gn2bp/desc_arm.json
Binary files differ
diff --git a/tools/gn2bp/desc_arm64.json b/tools/gn2bp/desc_arm64.json
index 6a26578..2bdbc03 100644
--- a/tools/gn2bp/desc_arm64.json
+++ b/tools/gn2bp/desc_arm64.json
Binary files differ
diff --git a/tools/gn2bp/desc_x64.json b/tools/gn2bp/desc_x64.json
index f69f50f..ddf9d3e 100644
--- a/tools/gn2bp/desc_x64.json
+++ b/tools/gn2bp/desc_x64.json
Binary files differ
diff --git a/tools/gn2bp/desc_x86.json b/tools/gn2bp/desc_x86.json
index 4f30229..f57f15a 100644
--- a/tools/gn2bp/desc_x86.json
+++ b/tools/gn2bp/desc_x86.json
Binary files differ
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index bc429f5..6ae3609 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -128,12 +128,17 @@
   "-msse4.2",
 ]
 
+def get_linker_script_ldflag(script_path):
+  return f'-Wl,--script,{tree_path}/{script_path}'
+
 # Additional arguments to apply to Android.bp rules.
 additional_args = {
     # TODO: remove if not needed.
     'cronet_aml_components_cronet_android_cronet': [
-        ('linker_scripts', {
-            'base/android/library_loader/anchor_functions.lds',
+        # linker_scripts property is not available in tm-mainline-prod.
+        # So use ldflags to specify linker script.
+        ('ldflags',{
+          get_linker_script_ldflag('base/android/library_loader/anchor_functions.lds'),
         }),
     ],
     'cronet_aml_net_net': [
@@ -370,6 +375,7 @@
     self.min_sdk_version = None
     self.proto = dict()
     self.linker_scripts = set()
+    self.ldflags = set()
     # The genrule_XXX below are properties that must to be propagated back
     # on the module(s) that depend on the genrule.
     self.genrule_headers = set()
@@ -391,6 +397,9 @@
     self.processor_class = None
     self.sdk_version = None
     self.javacflags = set()
+    self.license_kinds = set()
+    self.license_text = set()
+    self.default_applicable_licenses = set()
 
   def to_string(self, output):
     if self.comment:
@@ -437,6 +446,7 @@
     self._output_field(output, 'stubs')
     self._output_field(output, 'proto')
     self._output_field(output, 'linker_scripts')
+    self._output_field(output, 'ldflags')
     self._output_field(output, 'cppflags')
     self._output_field(output, 'libs')
     self._output_field(output, 'stem')
@@ -446,6 +456,9 @@
     self._output_field(output, 'processor_class')
     self._output_field(output, 'sdk_version')
     self._output_field(output, 'javacflags')
+    self._output_field(output, 'license_kinds')
+    self._output_field(output, 'license_text')
+    self._output_field(output, 'default_applicable_licenses')
     if self.rtti:
       self._output_field(output, 'rtti')
 
@@ -962,6 +975,7 @@
     self._delete_value_arg('--prev_output_dir', False)
     self._update_list_arg('--input_file', self._sanitize_filepath)
     self._update_list_arg('--input_file', self._add_location_tag_to_filepath)
+    self._append_arg('--package_prefix', 'android.net.http.internal')
     super()._sanitize_args()
 
   def _sanitize_outputs(self):
@@ -992,6 +1006,7 @@
     # update_jni_registration_module removes them from the srcs of the module
     # It might be better to remove sources by '--sources-exclusions'
     self._delete_value_arg('--sources-exclusions')
+    self._append_arg('--package_prefix', 'android.net.http.internal')
     super()._sanitize_args()
 
   def get_cmd(self):
@@ -1514,19 +1529,20 @@
   module.libs = {
     "androidx.annotation_annotation",
     "jsr305",
-    "androidx.core_core-nodeps",
-    "androidx.collection_collection",
     "androidx.annotation_annotation-experimental-nodeps",
-    "android-support-multidex",
     "framework-connectivity.stubs.module_lib",
     "framework-connectivity-t.stubs.module_lib",
     "framework-tethering.stubs.module_lib",
     "framework-wifi.stubs.module_lib",
     "framework-mediaprovider.stubs.module_lib",
   }
+  module.static_libs = {
+    "modules-utils-build_system",
+  }
   module.aidl["include_dirs"] = {"frameworks/base/core/java/"}
   module.aidl["local_include_dirs"] = {"base/android/java/src/"}
   module.sdk_version = "module_current"
+  module.min_sdk_version = 30
   module.apex_available.add(tethering_apex)
   # TODO: support for this flag is removed upstream in crrev/c/4062652.
   # Consider reverting this change upstream, or worst-case downstream.  As an
@@ -1534,8 +1550,7 @@
   # would be less likely to conflict with upstream changes if the revert is not
   # accepted.
   module.javacflags.add("-Aorg.chromium.chrome.skipGenJni")
-  # TODO: remove following workaround required to make this module visible to make (b/203203405)
-  module.apex_available.add("//apex_available:platform")
+  module.javacflags.add("-Apackage_prefix=android.net.http.internal")
   for dep in get_non_api_java_actions(gn):
     target = gn.get_target(dep)
     if target.script == '//build/android/gyp/gcc_preprocess.py':
@@ -1549,8 +1564,12 @@
 
 def create_java_api_module(blueprint, gn):
   source_module = Module('filegroup', module_prefix + 'api_sources', java_api_target_name)
+  # TODO add the API helpers separately after the main API is checked in and thoroughly reviewed
   source_module.srcs.update([gn_utils.label_to_path(source)
-                             for source in get_api_java_sources(gn)])
+                             for source in get_api_java_sources(gn)
+                             if "apihelpers" not in source])
+  source_module.comment += "\n// TODO(danstahr): add the API helpers separately after the main" \
+                           " API is checked in and thoroughly reviewed"
   source_module.srcs.update([
     ':' + create_action_module(blueprint, gn.get_target(dep), 'java_genrule').name
     for dep in get_api_java_actions(gn)])
@@ -1561,6 +1580,7 @@
   java_module.sdk_version = "module_current"
   java_module.libs = {
       "androidx.annotation_annotation",
+      "framework-annotations-lib",
     }
   blueprint.add_module(java_module)
   return java_module
@@ -1645,6 +1665,59 @@
 
   return blueprint
 
+def create_license_module(blueprint):
+  module = Module("license", "external_cronet_license", "LICENSE")
+  module.license_kinds.update({
+      'SPDX-license-identifier-LGPL-2.1',
+      'SPDX-license-identifier-GPL-2.0',
+      'SPDX-license-identifier-MPL',
+      'SPDX-license-identifier-ISC',
+      'SPDX-license-identifier-GPL',
+      'SPDX-license-identifier-AFL-2.0',
+      'SPDX-license-identifier-MPL-2.0',
+      'SPDX-license-identifier-BSD',
+      'SPDX-license-identifier-Apache-2.0',
+      'SPDX-license-identifier-BSL-1.0',
+      'SPDX-license-identifier-LGPL',
+      'SPDX-license-identifier-GPL-3.0',
+      'SPDX-license-identifier-Unicode-DFS',
+      'SPDX-license-identifier-NCSA',
+      'SPDX-license-identifier-OpenSSL',
+      'SPDX-license-identifier-MIT',
+      "SPDX-license-identifier-ICU",
+      'legacy_unencumbered', # public domain
+  })
+  module.license_text.update({
+      "LICENSE",
+      "net/third_party/uri_template/LICENSE",
+      "net/third_party/quiche/src/LICENSE",
+      "base/third_party/symbolize/LICENSE",
+      "base/third_party/superfasthash/LICENSE",
+      "base/third_party/xdg_user_dirs/LICENSE",
+      "base/third_party/double_conversion/LICENSE",
+      "base/third_party/nspr/LICENSE",
+      "base/third_party/dynamic_annotations/LICENSE",
+      "base/third_party/icu/LICENSE",
+      "base/third_party/valgrind/LICENSE",
+      "third_party/brotli/LICENSE",
+      "third_party/protobuf/LICENSE",
+      "third_party/protobuf/third_party/utf8_range/LICENSE",
+      "third_party/metrics_proto/LICENSE",
+      "third_party/boringssl/src/LICENSE",
+      "third_party/boringssl/src/third_party/googletest/LICENSE",
+      "third_party/boringssl/src/third_party/wycheproof_testvectors/LICENSE",
+      "third_party/boringssl/src/third_party/fiat/LICENSE",
+      "third_party/libevent/LICENSE",
+      "third_party/ashmem/LICENSE",
+      "third_party/icu/LICENSE",
+      "third_party/icu/scripts/LICENSE",
+      "third_party/abseil-cpp/LICENSE",
+      "third_party/modp_b64/LICENSE",
+  })
+  default_license = Module("package", "", "PACKAGE")
+  default_license.default_applicable_licenses.add(module.name)
+  blueprint.add_module(module)
+  blueprint.add_module(default_license)
 
 def main():
   parser = argparse.ArgumentParser(
@@ -1696,7 +1769,7 @@
   # Add any proto groups to the blueprint.
   for l_name, t_names in proto_groups.items():
     create_proto_group_modules(blueprint, gn, l_name, t_names)
-
+  create_license_module(blueprint)
   output = [
       """// Copyright (C) 2022 The Android Open Source Project
 //
diff --git a/tools/gn2bp/gen_desc_json.sh b/tools/gn2bp/gen_desc_json.sh
index 510b967..ed684b3 100755
--- a/tools/gn2bp/gen_desc_json.sh
+++ b/tools/gn2bp/gen_desc_json.sh
@@ -30,6 +30,7 @@
     "use_hashed_jni_names = true"
     "treat_warnings_as_errors = false"
     "enable_base_tracing = false"
+    "is_cronet_build = true"
   )
   gn_args+=("target_cpu = \"${1}\"")