diff --git a/TEST_MAPPING b/TEST_MAPPING
index d7d4bcb..52bba90 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -11,6 +11,12 @@
           "exclude-annotation": "com.android.testutils.SkipPresubmit"
         }
       ]
+    },
+    {
+      "name": "TetheringTests"
+    },
+    {
+      "name": "TetheringIntegrationTests"
     }
   ],
   "mainline-presubmit": [
@@ -24,12 +30,15 @@
       ]
     }
   ],
-  // Tests on physical devices with SIM cards: postsubmit only for capacity constraints
   "mainline-postsubmit": [
+    // Tests on physical devices with SIM cards: postsubmit only for capacity constraints
     {
       // TODO: add back the tethering module when updatable in this branch
       "name": "CtsNetTestCasesLatestSdk[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex]",
       "keywords": ["sim"]
+    },
+    {
+      "name": "TetheringCoverageTests[CaptivePortalLoginGoogle.apk+NetworkStackGoogle.apk+com.google.android.resolv.apex+com.google.android.tethering.apex]"
     }
   ],
   "imports": [
diff --git a/Tethering/TEST_MAPPING b/Tethering/TEST_MAPPING
deleted file mode 100644
index 5617b0c..0000000
--- a/Tethering/TEST_MAPPING
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "presubmit": [
-    {
-      "name": "TetheringTests"
-    }
-  ],
-  "postsubmit": [
-    {
-      "name": "TetheringIntegrationTests"
-    }
-  ]
-}
diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index fce4360..6f8e986 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -21,6 +21,7 @@
     name: "framework-tethering",
     defaults: ["framework-module-defaults"],
     impl_library_visibility: [
+        "//frameworks/base/packages/Tethering:__subpackages__",
         "//packages/modules/Connectivity/Tethering:__subpackages__",
     ],
 
diff --git a/Tethering/src/com/android/networkstack/tethering/UpstreamNetworkMonitor.java b/Tethering/src/com/android/networkstack/tethering/UpstreamNetworkMonitor.java
index e615334..cd27318 100644
--- a/Tethering/src/com/android/networkstack/tethering/UpstreamNetworkMonitor.java
+++ b/Tethering/src/com/android/networkstack/tethering/UpstreamNetworkMonitor.java
@@ -191,7 +191,7 @@
      * check even tethering is not active yet.
      */
     public void stop() {
-        releaseMobileNetworkRequest();
+        setTryCell(false);
 
         releaseCallback(mListenAllCallback);
         mListenAllCallback = null;
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 2b15866..19a8936 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -401,11 +401,6 @@
         StateMachine mUpstreamNetworkMonitorSM;
         ArrayList<IpServer> mIpv6CoordinatorNotifyList;
 
-        public void reset() {
-            mUpstreamNetworkMonitorSM = null;
-            mIpv6CoordinatorNotifyList = null;
-        }
-
         @Override
         public BpfCoordinator getBpfCoordinator(
                 BpfCoordinator.Dependencies deps) {
@@ -688,7 +683,6 @@
     }
 
     private Tethering makeTethering() {
-        mTetheringDependencies.reset();
         return new Tethering(mTetheringDependencies);
     }
 
@@ -785,8 +779,6 @@
         assertTrue(TestConnectivityManager.looksLikeDefaultRequest(reqCaptor.getValue()));
         // The default network request is only ever filed once.
         verifyNoMoreInteractions(mCm);
-        mUpstreamNetworkMonitor.startTrackDefaultNetwork(mEntitleMgr);
-        verifyNoMoreInteractions(mCm);
     }
 
     private void verifyInterfaceServingModeStarted(String ifname) throws Exception {
@@ -1089,6 +1081,11 @@
         verify(mUpstreamNetworkMonitor, times(1)).setCurrentUpstream(upstreamState.network);
     }
 
+    private void verifyDisableTryCellWhenTetheringStop(InOrder inOrder) {
+        runStopUSBTethering();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
+    }
+
     private void upstreamSelectionTestCommon(final boolean automatic, InOrder inOrder,
             TestNetworkAgent mobile, TestNetworkAgent wifi) throws Exception {
         // Enable automatic upstream selection.
@@ -1112,6 +1109,7 @@
         wifi.fakeConnect();
         mCm.makeDefaultNetwork(wifi, BROADCAST_FIRST);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
     }
 
@@ -1134,6 +1132,7 @@
 
         mCm.makeDefaultNetwork(wifi, BROADCAST_FIRST, doDispatchAll);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
 
         mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
@@ -1142,6 +1141,7 @@
 
         mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
 
         mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST, doDispatchAll);
@@ -1160,6 +1160,7 @@
         mLooper.dispatchAll();
         mobile.fakeDisconnect();
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(null);
 
         mobile = new TestNetworkAgent(mCm, buildMobile464xlatUpstreamState());
@@ -1177,6 +1178,7 @@
         mCm.makeDefaultNetwork(null, CALLBACKS_FIRST, doDispatchAll);
         mobile.fakeDisconnect();
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(null);
 
         mobile = new TestNetworkAgent(mCm, buildMobileDualStackUpstreamState());
@@ -1192,6 +1194,8 @@
         mobile.fakeDisconnect();
         mobile.sendLinkProperties();
         mLooper.dispatchAll();
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
     @Test
@@ -1214,6 +1218,10 @@
         mLooper.dispatchAll();
         mCm.makeDefaultNetwork(wifi, CALLBACKS_FIRST, null);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
+        inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(wifi.networkId);
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
     @Test
@@ -1229,6 +1237,7 @@
         // 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);
@@ -1240,11 +1249,14 @@
         // Lose and regain upstream again.
         dun.fakeDisconnect(CALLBACKS_FIRST, doDispatchAll);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(true);
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(null);
         inOrder.verify(mCm, never()).unregisterNetworkCallback(any(NetworkCallback.class));
         dun.fakeConnect(CALLBACKS_FIRST, doDispatchAll);
         mLooper.dispatchAll();
         inOrder.verify(mUpstreamNetworkMonitor).setCurrentUpstream(dun.networkId);
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
     @Test
@@ -1260,6 +1272,7 @@
         // list).
         mCm.makeDefaultNetwork(mobile, CALLBACKS_FIRST);
         mLooper.dispatchAll();
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
         inOrder.verify(mUpstreamNetworkMonitor, never()).setCurrentUpstream(any());
         // BUG: when wifi disconnect, the dun request would not be filed again because wifi is
         // no longer be default network which do not have CONNECTIVIY_ACTION broadcast.
@@ -1281,8 +1294,11 @@
         mLooper.dispatchAll();
         // BUG: dun has higher priority than wifi but tethering don't file dun request because
         // current upstream is wifi.
+        inOrder.verify(mUpstreamNetworkMonitor).setTryCell(false);
         inOrder.verify(mCm, never()).requestNetwork(any(), eq(0), eq(TYPE_MOBILE_DUN), any(),
                 any());
+
+        verifyDisableTryCellWhenTetheringStop(inOrder);
     }
 
     private void chooseDunUpstreamTestCommon(final boolean automatic, InOrder inOrder,
diff --git a/tests/cts/net/src/android/net/cts/NetworkAgentTest.kt b/tests/cts/net/src/android/net/cts/NetworkAgentTest.kt
index 1c9aba1..8e2b310 100644
--- a/tests/cts/net/src/android/net/cts/NetworkAgentTest.kt
+++ b/tests/cts/net/src/android/net/cts/NetworkAgentTest.kt
@@ -306,6 +306,11 @@
             return foundCallback
         }
 
+        inline fun <reified T : CallbackEntry> eventuallyExpect() =
+                history.poll(DEFAULT_TIMEOUT_MS) { it is T }.also {
+                    assertNotNull(it, "Callback ${T::class} not received")
+        } as T
+
         fun assertNoCallback() {
             assertTrue(waitForIdle(DEFAULT_TIMEOUT_MS),
                     "Handler didn't became idle after ${DEFAULT_TIMEOUT_MS}ms")
@@ -383,13 +388,12 @@
         callback.expectAvailableThenValidatedCallbacks(agent.network)
         agent.expectEmptySignalStrengths()
         agent.expectNoInternetValidationStatus()
-        agent.unregister()
+
+        unregister(agent)
         callback.expectCallback<Lost>(agent.network)
-        agent.expectCallback<OnNetworkUnwanted>()
         assertFailsWith<IllegalStateException>("Must not be able to register an agent twice") {
             agent.register()
         }
-        agent.expectCallback<OnNetworkDestroyed>()
     }
 
     @Test
@@ -400,7 +404,7 @@
         agent.expectNoInternetValidationStatus()
         mCM.requestBandwidthUpdate(agent.network)
         agent.expectCallback<OnBandwidthUpdateRequested>()
-        agent.unregister()
+        unregister(agent)
     }
 
     @Test
@@ -648,10 +652,16 @@
             }
         }
 
-        agent.unregister()
+        unregister(agent)
         callback.expectCallback<Lost>(agent.network)
     }
 
+    private fun unregister(agent: TestableNetworkAgent) {
+        agent.unregister()
+        agent.eventuallyExpect<OnNetworkUnwanted>()
+        agent.eventuallyExpect<OnNetworkDestroyed>()
+    }
+
     @Test
     @IgnoreUpTo(Build.VERSION_CODES.R)
     fun testAgentStartsInConnecting() {
diff --git a/tests/unit/Android.bp b/tests/unit/Android.bp
index beae0cf..6c4bb90 100644
--- a/tests/unit/Android.bp
+++ b/tests/unit/Android.bp
@@ -3,10 +3,6 @@
 //########################################################################
 package {
     // See: http://go/android-license-faq
-    // A large-scale-change added 'default_applicable_licenses' to import
-    // all of the 'license_kinds' from "Android-Apache-2.0"
-    // to get the below license kinds:
-    //   SPDX-license-identifier-Apache-2.0
     default_applicable_licenses: ["Android-Apache-2.0"],
 }
 
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java b/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
index f3ae9b0..93599f3 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsFactoryTest.java
@@ -43,6 +43,7 @@
 import androidx.test.runner.AndroidJUnit4;
 
 import com.android.frameworks.tests.net.R;
+import com.android.internal.util.test.FsUtil;
 
 import libcore.io.IoUtils;
 import libcore.io.Streams;
@@ -71,7 +72,7 @@
     public void setUp() throws Exception {
         mTestProc = new File(InstrumentationRegistry.getContext().getFilesDir(), "proc");
         if (mTestProc.exists()) {
-            IoUtils.deleteContents(mTestProc);
+            FsUtil.deleteContents(mTestProc);
         }
 
         // The libandroid_servers which have the native method is not available to
@@ -87,7 +88,7 @@
         mFactory = null;
 
         if (mTestProc.exists()) {
-            IoUtils.deleteContents(mTestProc);
+            FsUtil.deleteContents(mTestProc);
         }
     }
 
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index c32c1d2..0ba5f7d 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -112,13 +112,12 @@
 
 import com.android.internal.util.ArrayUtils;
 import com.android.internal.util.test.BroadcastInterceptingContext;
+import com.android.internal.util.test.FsUtil;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings.Config;
 import com.android.testutils.HandlerUtils;
 import com.android.testutils.TestableNetworkStatsProviderBinder;
 
-import libcore.io.IoUtils;
-
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Ignore;
@@ -215,7 +214,7 @@
         mServiceContext = new MockContext(context);
         mStatsDir = context.getFilesDir();
         if (mStatsDir.exists()) {
-            IoUtils.deleteContents(mStatsDir);
+            FsUtil.deleteContents(mStatsDir);
         }
 
         PowerManager powerManager = (PowerManager) mServiceContext.getSystemService(
@@ -285,7 +284,7 @@
 
     @After
     public void tearDown() throws Exception {
-        IoUtils.deleteContents(mStatsDir);
+        FsUtil.deleteContents(mStatsDir);
 
         mServiceContext = null;
         mStatsDir = null;