diff --git a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
index f123dca..0ac97f0 100644
--- a/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
+++ b/Tethering/common/TetheringLib/src/android/net/TetheringManager.java
@@ -333,6 +333,11 @@
     public static final int TETHER_ERROR_UNKNOWN_REQUEST = 17;
     @FlaggedApi(Flags.FLAG_TETHERING_WITH_SOFT_AP_CONFIG)
     public static final int TETHER_ERROR_DUPLICATE_REQUEST = 18;
+    /**
+     * Never used outside Tethering.java.
+     * @hide
+     */
+    public static final int TETHER_ERROR_BLUETOOTH_SERVICE_PENDING = 19;
 
     /** @hide */
     @Retention(RetentionPolicy.SOURCE)
diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index 1249e85..b50831d 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -43,6 +43,7 @@
 import static android.net.TetheringManager.TETHERING_WIFI;
 import static android.net.TetheringManager.TETHERING_WIFI_P2P;
 import static android.net.TetheringManager.TETHERING_WIGIG;
+import static android.net.TetheringManager.TETHER_ERROR_BLUETOOTH_SERVICE_PENDING;
 import static android.net.TetheringManager.TETHER_ERROR_INTERNAL_ERROR;
 import static android.net.TetheringManager.TETHER_ERROR_NO_ERROR;
 import static android.net.TetheringManager.TETHER_ERROR_SERVICE_UNAVAIL;
@@ -132,7 +133,6 @@
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.Log;
-import android.util.Pair;
 import android.util.SparseArray;
 
 import androidx.annotation.NonNull;
@@ -292,7 +292,7 @@
     private SettingsObserver mSettingsObserver;
     private BluetoothPan mBluetoothPan;
     private PanServiceListener mBluetoothPanListener;
-    private ArrayList<Pair<Boolean, IIntResultListener>> mPendingPanRequests;
+    private final ArrayList<IIntResultListener> mPendingPanRequestListeners;
     // AIDL doesn't support Set<Integer>. Maintain a int bitmap here. When the bitmap is passed to
     // TetheringManager, TetheringManager would convert it to a set of Integer types.
     // mSupportedTypeBitmap should always be updated inside tethering internal thread but it may be
@@ -312,7 +312,7 @@
         // This is intended to ensrure that if something calls startTethering(bluetooth) just after
         // bluetooth is enabled. Before onServiceConnected is called, store the calls into this
         // list and handle them as soon as onServiceConnected is called.
-        mPendingPanRequests = new ArrayList<>();
+        mPendingPanRequestListeners = new ArrayList<>();
 
         mTetherStates = new ArrayMap<>();
         mConnectedClientsTracker = new ConnectedClientsTracker();
@@ -708,8 +708,7 @@
             // If tethering is already enabled with a different request,
             // disable before re-enabling.
             if (unfinishedRequest != null && !unfinishedRequest.equalsIgnoreUidPackage(request)) {
-                enableTetheringInternal(type, false /* disabled */,
-                        unfinishedRequest.getInterfaceName(), null);
+                enableTetheringInternal(false /* disabled */, unfinishedRequest, null);
                 mEntitlementMgr.stopProvisioningIfNeeded(type);
             }
             mPendingTetheringRequests.put(type, request);
@@ -720,7 +719,7 @@
                 mEntitlementMgr.startProvisioningIfNeeded(type,
                         request.getShouldShowEntitlementUi());
             }
-            enableTetheringInternal(type, true /* enabled */, request.getInterfaceName(), listener);
+            enableTetheringInternal(true /* enabled */, request, listener);
             mTetheringMetrics.createBuilder(type, callerPkg);
         });
     }
@@ -767,7 +766,10 @@
     void stopTetheringInternal(int type) {
         mPendingTetheringRequests.remove(type);
 
-        enableTetheringInternal(type, false /* disabled */, null, null);
+        // Using a placeholder here is ok since none of the disable APIs use the request for
+        // anything. We simply need the tethering type to know which link layer to poke for removal.
+        // TODO: Remove the placeholder here and loop through each pending/serving request.
+        enableTetheringInternal(false /* disabled */, createPlaceholderRequest(type), null);
         mEntitlementMgr.stopProvisioningIfNeeded(type);
     }
 
@@ -775,9 +777,10 @@
      * Enables or disables tethering for the given type. If provisioning is required, it will
      * schedule provisioning rechecks for the specified interface.
      */
-    private void enableTetheringInternal(int type, boolean enable,
-            String iface, final IIntResultListener listener) {
-        int result = TETHER_ERROR_NO_ERROR;
+    private void enableTetheringInternal(boolean enable, @NonNull final TetheringRequest request,
+            final IIntResultListener listener) {
+        final int type = request.getTetheringType();
+        final int result;
         switch (type) {
             case TETHERING_WIFI:
                 result = setWifiTethering(enable);
@@ -786,7 +789,7 @@
                 result = setUsbTethering(enable);
                 break;
             case TETHERING_BLUETOOTH:
-                setBluetoothTethering(enable, listener);
+                result = setBluetoothTethering(enable, listener);
                 break;
             case TETHERING_NCM:
                 result = setNcmTethering(enable);
@@ -795,17 +798,17 @@
                 result = setEthernetTethering(enable);
                 break;
             case TETHERING_VIRTUAL:
-                result = setVirtualMachineTethering(enable, iface);
+                result = setVirtualMachineTethering(enable, request);
                 break;
             default:
                 Log.w(TAG, "Invalid tether type.");
                 result = TETHER_ERROR_UNKNOWN_TYPE;
         }
 
-        // The result of Bluetooth tethering will be sent by #setBluetoothTethering.
-        if (type != TETHERING_BLUETOOTH) {
-            sendTetherResult(listener, result, type);
-        }
+        // The result of Bluetooth tethering will be sent after the pan service connects.
+        if (result == TETHER_ERROR_BLUETOOTH_SERVICE_PENDING) return;
+
+        sendTetherResult(listener, result, type);
     }
 
     private void sendTetherResult(final IIntResultListener listener, final int result,
@@ -844,13 +847,12 @@
         return TETHER_ERROR_INTERNAL_ERROR;
     }
 
-    private void setBluetoothTethering(final boolean enable, final IIntResultListener listener) {
+    private int setBluetoothTethering(final boolean enable, final IIntResultListener listener) {
         final BluetoothAdapter adapter = mDeps.getBluetoothAdapter();
         if (adapter == null || !adapter.isEnabled()) {
             Log.w(TAG, "Tried to enable bluetooth tethering with null or disabled adapter. null: "
                     + (adapter == null));
-            sendTetherResult(listener, TETHER_ERROR_SERVICE_UNAVAIL, TETHERING_BLUETOOTH);
-            return;
+            return TETHER_ERROR_SERVICE_UNAVAIL;
         }
 
         if (mBluetoothPanListener != null && mBluetoothPanListener.isConnected()) {
@@ -858,16 +860,21 @@
             // When bluetooth tethering is enabled, any time a PAN client pairs with this
             // host, bluetooth will bring up a bt-pan interface and notify tethering to
             // enable IP serving.
-            setBluetoothTetheringSettings(mBluetoothPan, enable, listener);
-            return;
+            return setBluetoothTetheringSettings(mBluetoothPan, enable);
         }
 
-        // The reference of IIntResultListener should only exist when application want to start
-        // tethering but tethering is not bound to pan service yet. Even if the calling process
-        // dies, the referenice of IIntResultListener would still keep in mPendingPanRequests. Once
-        // tethering bound to pan service (onServiceConnected) or bluetooth just crash
-        // (onServiceDisconnected), all the references from mPendingPanRequests would be cleared.
-        mPendingPanRequests.add(new Pair(enable, listener));
+        if (!enable) {
+            // The service is not connected. If disabling tethering, there's no point starting
+            // the service just to stop tethering since tethering is not started. Just remove
+            // any pending requests to enable tethering, and notify them that they have failed.
+            for (IIntResultListener pendingListener : mPendingPanRequestListeners) {
+                sendTetherResult(pendingListener, TETHER_ERROR_SERVICE_UNAVAIL,
+                        TETHERING_BLUETOOTH);
+            }
+            mPendingPanRequestListeners.clear();
+            return TETHER_ERROR_NO_ERROR;
+        }
+        mPendingPanRequestListeners.add(listener);
 
         // Bluetooth tethering is not a popular feature. To avoid bind to bluetooth pan service all
         // the time but user never use bluetooth tethering. mBluetoothPanListener is created first
@@ -877,6 +884,7 @@
             mBluetoothPanListener = new PanServiceListener();
             adapter.getProfileProxy(mContext, mBluetoothPanListener, BluetoothProfile.PAN);
         }
+        return TETHER_ERROR_BLUETOOTH_SERVICE_PENDING;
     }
 
     private class PanServiceListener implements ServiceListener {
@@ -893,10 +901,12 @@
                 mBluetoothPan = (BluetoothPan) proxy;
                 mIsConnected = true;
 
-                for (Pair<Boolean, IIntResultListener> request : mPendingPanRequests) {
-                    setBluetoothTetheringSettings(mBluetoothPan, request.first, request.second);
+                for (IIntResultListener pendingListener : mPendingPanRequestListeners) {
+                    final int result = setBluetoothTetheringSettings(mBluetoothPan,
+                            true /* enable */);
+                    sendTetherResult(pendingListener, result, TETHERING_BLUETOOTH);
                 }
-                mPendingPanRequests.clear();
+                mPendingPanRequestListeners.clear();
             });
         }
 
@@ -907,11 +917,11 @@
                 // reachable before next onServiceConnected.
                 mIsConnected = false;
 
-                for (Pair<Boolean, IIntResultListener> request : mPendingPanRequests) {
-                    sendTetherResult(request.second, TETHER_ERROR_SERVICE_UNAVAIL,
+                for (IIntResultListener pendingListener : mPendingPanRequestListeners) {
+                    sendTetherResult(pendingListener, TETHER_ERROR_SERVICE_UNAVAIL,
                             TETHERING_BLUETOOTH);
                 }
-                mPendingPanRequests.clear();
+                mPendingPanRequestListeners.clear();
                 mBluetoothIfaceRequest = null;
                 mBluetoothCallback = null;
                 maybeDisableBluetoothIpServing();
@@ -923,8 +933,8 @@
         }
     }
 
-    private void setBluetoothTetheringSettings(@NonNull final BluetoothPan bluetoothPan,
-            final boolean enable, final IIntResultListener listener) {
+    private int setBluetoothTetheringSettings(@NonNull final BluetoothPan bluetoothPan,
+            final boolean enable) {
         if (SdkLevel.isAtLeastT()) {
             changeBluetoothTetheringSettings(bluetoothPan, enable);
         } else {
@@ -933,9 +943,8 @@
 
         // Enabling bluetooth tethering settings can silently fail. Send internal error if the
         // result is not expected.
-        final int result = bluetoothPan.isTetheringOn() == enable
+        return bluetoothPan.isTetheringOn() == enable
                 ? TETHER_ERROR_NO_ERROR : TETHER_ERROR_INTERNAL_ERROR;
-        sendTetherResult(listener, result, TETHERING_BLUETOOTH);
     }
 
     private void changeBluetoothTetheringSettingsPreT(@NonNull final BluetoothPan bluetoothPan,
@@ -1054,14 +1063,15 @@
         }
     }
 
-    private int setVirtualMachineTethering(final boolean enable, String iface) {
+    private int setVirtualMachineTethering(final boolean enable,
+            @NonNull final TetheringRequest request) {
+        final String iface = request.getInterfaceName();
         if (enable) {
             if (TextUtils.isEmpty(iface)) {
                 mConfiguredVirtualIface = "avf_tap_fixed";
             } else {
                 mConfiguredVirtualIface = iface;
             }
-            final TetheringRequest request = getOrCreatePendingTetheringRequest(TETHERING_VIRTUAL);
             enableIpServing(request, mConfiguredVirtualIface);
         } else if (mConfiguredVirtualIface != null) {
             ensureIpServerStopped(mConfiguredVirtualIface);
@@ -1094,6 +1104,19 @@
     }
 
     /**
+     * Create a placeholder request. This is used in case we try to find a pending request but there
+     * is none (e.g. stopTethering removed a pending request), or for cases where we only have the
+     * tethering type (e.g. stopTethering(int)).
+     */
+    @NonNull
+    private TetheringRequest createPlaceholderRequest(int type) {
+        final TetheringRequest request = new TetheringRequest.Builder(type).build();
+        request.getParcel().requestType = TetheringRequest.REQUEST_TYPE_LEGACY;
+        request.getParcel().connectivityScope = CONNECTIVITY_SCOPE_GLOBAL;
+        return request;
+    }
+
+    /**
      * Gets the TetheringRequest that #startTethering was called with but is waiting for the link
      * layer event to indicate the interface is available to tether.
      * Note: There are edge cases where the pending request is absent and we must temporarily
@@ -1109,9 +1132,7 @@
 
         Log.w(TAG, "No pending TetheringRequest for type " + type + " found, creating a placeholder"
                 + " request");
-        TetheringRequest placeholder = new TetheringRequest.Builder(type).build();
-        placeholder.getParcel().requestType = REQUEST_TYPE_PLACEHOLDER;
-        return placeholder;
+        return createPlaceholderRequest(type);
     }
 
     private void handleLegacyTether(String iface, final IIntResultListener listener) {
@@ -1730,27 +1751,7 @@
                 break;
             case IFACE_IP_MODE_LOCAL_ONLY:
                 type = maybeInferWifiTetheringType(ifname);
-                // BUG: this request is incorrect - instead of LOHS, it will reflect whatever
-                // request (if any) is being processed for TETHERING_WIFI. However, this is the
-                // historical behaviour. It mostly works because a) most of the time there is no
-                // such request b) tetherinternal doesn't look at the connectivity scope of the
-                // request, it takes the scope from requestedState.
-                request = getPendingTetheringRequest(type);
-                if (request == null) {
-                    request = createImplicitLocalOnlyTetheringRequest(TETHERING_WIFI);
-                } else {
-                    // If we've taken this request from the pending requests, then force the
-                    // connectivity scope to local so we start IpServer in local-only mode (this
-                    // matches historical behavior). This should be OK since the connectivity scope
-                    // is only used to start IpServer in the correct mode.
-                    // TODO: This will break fuzzy-matching logic for start/stop tethering in the
-                    //       future. Figure out how to reconcile that with this forced scope.
-                    //       Possibly ignore the connectivity scope for wifi if both requests are
-                    //       explicit, since explicit Wifi requests may only have
-                    //       CONNECTIVITY_SCOPE_GLOBAL. Or possibly, don't add any edge case and
-                    //       treat it as a different request entirely.
-                    request.getParcel().connectivityScope = CONNECTIVITY_SCOPE_LOCAL;
-                }
+                request = createImplicitLocalOnlyTetheringRequest(type);
                 break;
             default:
                 mLog.e("Cannot enable IP serving in unknown WiFi mode: " + wifiIpMode);
@@ -2427,9 +2428,14 @@
                         break;
                     }
                     case EVENT_REQUEST_CHANGE_DOWNSTREAM: {
-                        final int tetheringType = message.arg1;
+                        final int type = message.arg1;
                         final Boolean enabled = (Boolean) message.obj;
-                        enableTetheringInternal(tetheringType, enabled, null, null);
+                        // Using a placeholder here is ok since we just need to the type of
+                        // tethering to poke the link layer. When the link layer comes up, we won't
+                        // have a pending request to use, but this matches the historical behavior.
+                        // TODO: Get the TetheringRequest from IpServer and make sure to put it in
+                        //       the pending list too.
+                        enableTetheringInternal(enabled, createPlaceholderRequest(type), null);
                         break;
                     }
                     default:
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 f7a44f1..e1c2db9 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -93,7 +93,6 @@
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
-import static org.junit.Assume.assumeFalse;
 import static org.junit.Assume.assumeTrue;
 import static org.mockito.ArgumentMatchers.argThat;
 import static org.mockito.ArgumentMatchers.notNull;
@@ -2787,6 +2786,10 @@
         public void assertHasResult() {
             if (!mHasResult) fail("No callback result");
         }
+
+        public void assertDoesNotHaveResult() {
+            if (mHasResult) fail("Has callback result");
+        }
     }
 
     @Test
@@ -3395,10 +3398,9 @@
     }
 
     @Test
+    @IgnoreUpTo(Build.VERSION_CODES.S_V2)
     public void testBluetoothTethering() throws Exception {
         initTetheringOnTestThread();
-        // Switch to @IgnoreUpTo(Build.VERSION_CODES.S_V2) when it is available for AOSP.
-        assumeTrue(isAtLeastT());
 
         final ResultListener result = new ResultListener(TETHER_ERROR_NO_ERROR);
         mockBluetoothSettings(true /* bluetoothOn */, true /* tetheringOn */);
@@ -3432,10 +3434,9 @@
     }
 
     @Test
+    @IgnoreAfter(Build.VERSION_CODES.S_V2)
     public void testBluetoothTetheringBeforeT() throws Exception {
         initTetheringOnTestThread();
-        // Switch to @IgnoreAfter(Build.VERSION_CODES.S_V2) when it is available for AOSP.
-        assumeFalse(isAtLeastT());
 
         final ResultListener result = new ResultListener(TETHER_ERROR_NO_ERROR);
         mockBluetoothSettings(true /* bluetoothOn */, true /* tetheringOn */);
@@ -3515,6 +3516,23 @@
         verifyNetdCommandForBtTearDown();
     }
 
+    @Test
+    public void testPendingPanEnableRequestFailedUponDisableRequest() throws Exception {
+        initTetheringOnTestThread();
+
+        mockBluetoothSettings(true /* bluetoothOn */, true /* tetheringOn */);
+        final ResultListener failedEnable = new ResultListener(TETHER_ERROR_SERVICE_UNAVAIL);
+        mTethering.startTethering(createTetheringRequest(TETHERING_BLUETOOTH),
+                TEST_CALLER_PKG, failedEnable);
+        mLooper.dispatchAll();
+        failedEnable.assertDoesNotHaveResult();
+
+        // Stop tethering before the pan service connects. This should fail the enable request.
+        mTethering.stopTethering(TETHERING_BLUETOOTH);
+        mLooper.dispatchAll();
+        failedEnable.assertHasResult();
+    }
+
     private void mockBluetoothSettings(boolean bluetoothOn, boolean tetheringOn) {
         when(mBluetoothAdapter.isEnabled()).thenReturn(bluetoothOn);
         when(mBluetoothPan.isTetheringOn()).thenReturn(tetheringOn);
diff --git a/bpf/headers/include/bpf/KernelUtils.h b/bpf/headers/include/bpf/KernelUtils.h
index 68bc607..a36085a 100644
--- a/bpf/headers/include/bpf/KernelUtils.h
+++ b/bpf/headers/include/bpf/KernelUtils.h
@@ -55,12 +55,12 @@
            isKernelVersion(4,  9) ||  // minimum for Android S & T
            isKernelVersion(4, 14) ||  // minimum for Android U
            isKernelVersion(4, 19) ||  // minimum for Android V
-           isKernelVersion(5,  4) ||  // first supported in Android R, min for W
+           isKernelVersion(5,  4) ||  // first supported in Android R, min for 25Q2
            isKernelVersion(5, 10) ||  // first supported in Android S
            isKernelVersion(5, 15) ||  // first supported in Android T
            isKernelVersion(6,  1) ||  // first supported in Android U
            isKernelVersion(6,  6) ||  // first supported in Android V
-           isKernelVersion(6, 12);    // first supported in Android W
+           isKernelVersion(6, 12);    // first supported in Android 25Q2
 }
 
 // Figure out the bitness of userspace.
diff --git a/bpf/loader/NetBpfLoad.cpp b/bpf/loader/NetBpfLoad.cpp
index 1e088a6..40d1281 100644
--- a/bpf/loader/NetBpfLoad.cpp
+++ b/bpf/loader/NetBpfLoad.cpp
@@ -61,6 +61,7 @@
 
 // The following matches bpf_helpers.h, which is only for inclusion in bpf code
 #define BPFLOADER_MAINLINE_VERSION 42u
+#define BPFLOADER_MAINLINE_25Q2_VERSION 47u
 
 using android::base::EndsWith;
 using android::base::GetIntProperty;
@@ -823,14 +824,14 @@
                                    "tmp_map_" + objName + "_" + mapNames[i];
                 ret = bpfFdPin(fd, createLoc.c_str());
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("create %s -> %d [%d:%s]", createLoc.c_str(), ret, err, strerror(err));
                     return -err;
                 }
                 ret = renameat2(AT_FDCWD, createLoc.c_str(),
                                 AT_FDCWD, mapPinLoc.c_str(), RENAME_NOREPLACE);
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("rename %s %s -> %d [%d:%s]", createLoc.c_str(), mapPinLoc.c_str(), ret,
                           err, strerror(err));
                     return -err;
@@ -838,32 +839,34 @@
             } else {
                 ret = bpfFdPin(fd, mapPinLoc.c_str());
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("pin %s -> %d [%d:%s]", mapPinLoc.c_str(), ret, err, strerror(err));
                     return -err;
                 }
             }
             ret = chmod(mapPinLoc.c_str(), md[i].mode);
             if (ret) {
-                int err = errno;
+                const int err = errno;
                 ALOGE("chmod(%s, 0%o) = %d [%d:%s]", mapPinLoc.c_str(), md[i].mode, ret, err,
                       strerror(err));
                 return -err;
             }
             ret = chown(mapPinLoc.c_str(), (uid_t)md[i].uid, (gid_t)md[i].gid);
             if (ret) {
-                int err = errno;
+                const int err = errno;
                 ALOGE("chown(%s, %u, %u) = %d [%d:%s]", mapPinLoc.c_str(), md[i].uid, md[i].gid,
                       ret, err, strerror(err));
                 return -err;
             }
         }
 
-        int mapId = bpfGetFdMapId(fd);
-        if (mapId == -1) {
-            if (isAtLeastKernelVersion(4, 14, 0))
-                ALOGE("bpfGetFdMapId failed, ret: %d [%d]", mapId, errno);
-        } else {
+        if (isAtLeastKernelVersion(4, 14, 0)) {
+            int mapId = bpfGetFdMapId(fd);
+            if (mapId == -1) {
+                const int err = errno;
+                ALOGE("bpfGetFdMapId failed, errno: %d", err);
+                return -err;
+            }
             ALOGI("map %s id %d", mapPinLoc.c_str(), mapId);
         }
 
@@ -1006,7 +1009,7 @@
         if (access(progPinLoc.c_str(), F_OK) == 0) {
             fd.reset(retrieveProgram(progPinLoc.c_str()));
             ALOGD("New bpf prog load reusing prog %s, ret: %d (%s)", progPinLoc.c_str(), fd.get(),
-                  (!fd.ok() ? std::strerror(errno) : "no error"));
+                  !fd.ok() ? std::strerror(errno) : "ok");
             reuse = true;
         } else {
             static char log_buf[1 << 20];  // 1 MiB logging buffer
@@ -1037,7 +1040,7 @@
 
             ALOGD("BPF_PROG_LOAD call for %s (%s) returned '%s' fd: %d (%s)", elfPath,
                   cs[i].name.c_str(), log_oneline ? log_buf : "{multiline}",
-                  fd.get(), (!fd.ok() ? std::strerror(errno) : "ok"));
+                  fd.get(), !fd.ok() ? std::strerror(errno) : "ok");
 
             if (!fd.ok()) {
                 // kernel NULL terminates log_buf, so this checks for non-empty string
@@ -1066,14 +1069,14 @@
                                    "tmp_prog_" + objName + '_' + string(name);
                 ret = bpfFdPin(fd, createLoc.c_str());
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("create %s -> %d [%d:%s]", createLoc.c_str(), ret, err, strerror(err));
                     return -err;
                 }
                 ret = renameat2(AT_FDCWD, createLoc.c_str(),
                                 AT_FDCWD, progPinLoc.c_str(), RENAME_NOREPLACE);
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("rename %s %s -> %d [%d:%s]", createLoc.c_str(), progPinLoc.c_str(), ret,
                           err, strerror(err));
                     return -err;
@@ -1081,30 +1084,52 @@
             } else {
                 ret = bpfFdPin(fd, progPinLoc.c_str());
                 if (ret) {
-                    int err = errno;
+                    const int err = errno;
                     ALOGE("create %s -> %d [%d:%s]", progPinLoc.c_str(), ret, err, strerror(err));
                     return -err;
                 }
             }
             if (chmod(progPinLoc.c_str(), 0440)) {
-                int err = errno;
+                const int err = errno;
                 ALOGE("chmod %s 0440 -> [%d:%s]", progPinLoc.c_str(), err, strerror(err));
                 return -err;
             }
             if (chown(progPinLoc.c_str(), (uid_t)cs[i].prog_def->uid,
                       (gid_t)cs[i].prog_def->gid)) {
-                int err = errno;
+                const int err = errno;
                 ALOGE("chown %s %d %d -> [%d:%s]", progPinLoc.c_str(), cs[i].prog_def->uid,
                       cs[i].prog_def->gid, err, strerror(err));
                 return -err;
             }
         }
 
-        int progId = bpfGetFdProgId(fd);
-        if (progId == -1) {
-            ALOGE("bpfGetFdProgId failed, ret: %d [%d]", progId, errno);
-        } else {
-            ALOGI("prog %s id %d", progPinLoc.c_str(), progId);
+        if (isAtLeastKernelVersion(4, 14, 0)) {
+            int progId = bpfGetFdProgId(fd);
+            if (progId == -1) {
+                const int err = errno;
+                ALOGE("bpfGetFdProgId failed, errno: %d", err);
+                return -err;
+            }
+
+            int jitLen = bpfGetFdJitProgLen(fd);
+            if (jitLen == -1) {
+                const int err = errno;
+                ALOGE("bpfGetFdJitProgLen failed, ret: %d", err);
+                return -err;
+            }
+
+            int xlatLen = bpfGetFdXlatProgLen(fd);
+            if (xlatLen == -1) {
+                const int err = errno;
+                ALOGE("bpfGetFdXlatProgLen failed, ret: %d", err);
+                return -err;
+            }
+            ALOGI("prog %s id %d len jit:%d xlat:%d", progPinLoc.c_str(), progId, jitLen, xlatLen);
+
+            if (!jitLen && bpfloader_ver >= BPFLOADER_MAINLINE_25Q2_VERSION) {
+                ALOGE("Kernel eBPF JIT failure for %s", progPinLoc.c_str());
+                return -ENOTSUP;
+            }
         }
     }
 
diff --git a/bpf/syscall_wrappers/include/BpfSyscallWrappers.h b/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
index a31445a..1d72b77 100644
--- a/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
+++ b/bpf/syscall_wrappers/include/BpfSyscallWrappers.h
@@ -269,7 +269,7 @@
     return info.FIELD; \
 }
 
-// All 7 of these fields are already present in Linux v4.14 (even ACK 4.14-P)
+// All 9 of these fields are already present in Linux v4.14 (even ACK 4.14-P)
 // while BPF_OBJ_GET_INFO_BY_FD is not implemented at all in v4.9 (even ACK 4.9-Q)
 DEFINE_BPF_GET_FD(map, MapType, type)            // int bpfGetFdMapType(const borrowed_fd& map_fd)
 DEFINE_BPF_GET_FD(map, MapId, id)                // int bpfGetFdMapId(const borrowed_fd& map_fd)
@@ -278,6 +278,8 @@
 DEFINE_BPF_GET_FD(map, MaxEntries, max_entries)  // int bpfGetFdMaxEntries(const borrowed_fd& map_fd)
 DEFINE_BPF_GET_FD(map, MapFlags, map_flags)      // int bpfGetFdMapFlags(const borrowed_fd& map_fd)
 DEFINE_BPF_GET_FD(prog, ProgId, id)              // int bpfGetFdProgId(const borrowed_fd& prog_fd)
+DEFINE_BPF_GET_FD(prog, JitProgLen, jited_prog_len)   // int bpfGetFdJitProgLen(...)
+DEFINE_BPF_GET_FD(prog, XlatProgLen, xlated_prog_len) // int bpfGetFdXlatProgLen(...)
 
 #undef DEFINE_BPF_GET_FD
 
diff --git a/bpf/tests/mts/bpf_existence_test.cpp b/bpf/tests/mts/bpf_existence_test.cpp
index 2cfa546..0ecda3d 100644
--- a/bpf/tests/mts/bpf_existence_test.cpp
+++ b/bpf/tests/mts/bpf_existence_test.cpp
@@ -21,7 +21,6 @@
 #include <string>
 
 #include <android-base/properties.h>
-#include <android-modules-utils/sdk_level.h>
 #include <android/api-level.h>
 #include <bpf/BpfUtils.h>
 
@@ -32,11 +31,6 @@
 using std::string;
 
 using android::bpf::isAtLeastKernelVersion;
-using android::modules::sdklevel::IsAtLeastR;
-using android::modules::sdklevel::IsAtLeastS;
-using android::modules::sdklevel::IsAtLeastT;
-using android::modules::sdklevel::IsAtLeastU;
-using android::modules::sdklevel::IsAtLeastV;
 
 #define PLATFORM "/sys/fs/bpf/"
 #define TETHERING "/sys/fs/bpf/tethering/"
@@ -48,10 +42,15 @@
 class BpfExistenceTest : public ::testing::Test {
 };
 
-//ToDo: replace isAtLeast25Q2 with IsAtLeastB once sdk_level have been upgraded to 36 on aosp/main
 const bool unreleased = (android::base::GetProperty("ro.build.version.codename", "REL") != "REL");
-const int api_level = unreleased ? __ANDROID_API_FUTURE__ : android_get_device_api_level();
-const bool isAtLeast25Q2 = (api_level > __ANDROID_API_V__);
+const int api_level = unreleased ? 10000 : android_get_device_api_level();
+const bool isAtLeastR = (api_level >= 30);
+const bool isAtLeastS = (api_level >= 31);
+// Sv2 is 32
+const bool isAtLeastT = (api_level >= 33);
+const bool isAtLeastU = (api_level >= 34);
+const bool isAtLeastV = (api_level >= 35);
+const bool isAtLeast25Q2 = (api_level >= 36);
 
 // Part of Android R platform (for 4.9+), but mainlined in S
 static const set<string> PLATFORM_ONLY_IN_R = {
@@ -194,33 +193,33 @@
     // and for the presence of mainline stuff.
 
     // Note: Q is no longer supported by mainline
-    ASSERT_TRUE(IsAtLeastR());
+    ASSERT_TRUE(isAtLeastR);
 
     // R can potentially run on pre-4.9 kernel non-eBPF capable devices.
-    DO_EXPECT(IsAtLeastR() && !IsAtLeastS() && isAtLeastKernelVersion(4, 9, 0), PLATFORM_ONLY_IN_R);
+    DO_EXPECT(isAtLeastR && !isAtLeastS && isAtLeastKernelVersion(4, 9, 0), PLATFORM_ONLY_IN_R);
 
     // S requires Linux Kernel 4.9+ and thus requires eBPF support.
-    if (IsAtLeastS()) ASSERT_TRUE(isAtLeastKernelVersion(4, 9, 0));
-    DO_EXPECT(IsAtLeastS(), MAINLINE_FOR_S_PLUS);
+    if (isAtLeastS) ASSERT_TRUE(isAtLeastKernelVersion(4, 9, 0));
+    DO_EXPECT(isAtLeastS, MAINLINE_FOR_S_PLUS);
 
     // Nothing added or removed in SCv2.
 
     // T still only requires Linux Kernel 4.9+.
-    DO_EXPECT(IsAtLeastT(), MAINLINE_FOR_T_PLUS);
-    DO_EXPECT(IsAtLeastT() && isAtLeastKernelVersion(4, 14, 0), MAINLINE_FOR_T_4_14_PLUS);
-    DO_EXPECT(IsAtLeastT() && isAtLeastKernelVersion(4, 19, 0), MAINLINE_FOR_T_4_19_PLUS);
-    DO_EXPECT(IsAtLeastT() && isAtLeastKernelVersion(5, 10, 0), MAINLINE_FOR_T_5_10_PLUS);
-    DO_EXPECT(IsAtLeastT() && isAtLeastKernelVersion(5, 15, 0), MAINLINE_FOR_T_5_15_PLUS);
+    DO_EXPECT(isAtLeastT, MAINLINE_FOR_T_PLUS);
+    DO_EXPECT(isAtLeastT && isAtLeastKernelVersion(4, 14, 0), MAINLINE_FOR_T_4_14_PLUS);
+    DO_EXPECT(isAtLeastT && isAtLeastKernelVersion(4, 19, 0), MAINLINE_FOR_T_4_19_PLUS);
+    DO_EXPECT(isAtLeastT && isAtLeastKernelVersion(5, 10, 0), MAINLINE_FOR_T_5_10_PLUS);
+    DO_EXPECT(isAtLeastT && isAtLeastKernelVersion(5, 15, 0), MAINLINE_FOR_T_5_15_PLUS);
 
     // U requires Linux Kernel 4.14+, but nothing (as yet) added or removed in U.
-    if (IsAtLeastU()) ASSERT_TRUE(isAtLeastKernelVersion(4, 14, 0));
-    DO_EXPECT(IsAtLeastU(), MAINLINE_FOR_U_PLUS);
-    DO_EXPECT(IsAtLeastU() && isAtLeastKernelVersion(5, 10, 0), MAINLINE_FOR_U_5_10_PLUS);
+    if (isAtLeastU) ASSERT_TRUE(isAtLeastKernelVersion(4, 14, 0));
+    DO_EXPECT(isAtLeastU, MAINLINE_FOR_U_PLUS);
+    DO_EXPECT(isAtLeastU && isAtLeastKernelVersion(5, 10, 0), MAINLINE_FOR_U_5_10_PLUS);
 
     // V requires Linux Kernel 4.19+, but nothing (as yet) added or removed in V.
-    if (IsAtLeastV()) ASSERT_TRUE(isAtLeastKernelVersion(4, 19, 0));
-    DO_EXPECT(IsAtLeastV(), MAINLINE_FOR_V_PLUS);
-    DO_EXPECT(IsAtLeastV() && isAtLeastKernelVersion(5, 4, 0), MAINLINE_FOR_V_5_4_PLUS);
+    if (isAtLeastV) ASSERT_TRUE(isAtLeastKernelVersion(4, 19, 0));
+    DO_EXPECT(isAtLeastV, MAINLINE_FOR_V_PLUS);
+    DO_EXPECT(isAtLeastV && isAtLeastKernelVersion(5, 4, 0), MAINLINE_FOR_V_5_4_PLUS);
 
     if (isAtLeast25Q2) ASSERT_TRUE(isAtLeastKernelVersion(5, 4, 0));
     DO_EXPECT(isAtLeast25Q2, MAINLINE_FOR_25Q2_PLUS);
diff --git a/common/flags.aconfig b/common/flags.aconfig
index 5f279fa..51b4fc0 100644
--- a/common/flags.aconfig
+++ b/common/flags.aconfig
@@ -171,6 +171,6 @@
   is_exported: true
   namespace: "android_core_networking"
   description: "Flag for controlling access to the local network behind a new runtime permission. Requires ConnectivityCompatChanges.RESTRICT_LOCAL_NETWORK to enable feature."
-  bug: "365139289"
+  bug: "388774939"
   is_fixed_read_only: true
 }
diff --git a/framework/Android.bp b/framework/Android.bp
index d6ee759..f66bc60 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -162,7 +162,6 @@
     srcs: [":httpclient_api_sources"],
     static_libs: [
         "com.android.net.http.flags-aconfig-java",
-        "modules-utils-expresslog",
     ],
     libs: [
         "androidx.annotation_annotation",
diff --git a/framework/src/android/net/connectivity/ConnectivityCompatChanges.java b/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
index 0536263..317854b 100644
--- a/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
+++ b/framework/src/android/net/connectivity/ConnectivityCompatChanges.java
@@ -143,7 +143,7 @@
      * @hide
      */
     @ChangeId
-    @EnabledSince(targetSdkVersion = Build.VERSION_CODES.CUR_DEVELOPMENT)
+    @EnabledAfter(targetSdkVersion = Build.VERSION_CODES.CUR_DEVELOPMENT)
     public static final long RESTRICT_LOCAL_NETWORK = 365139289L;
 
     private ConnectivityCompatChanges() {
diff --git a/networksecurity/service/src/com/android/server/net/ct/DataStore.java b/networksecurity/service/src/com/android/server/net/ct/DataStore.java
index 8180316..1f99efa 100644
--- a/networksecurity/service/src/com/android/server/net/ct/DataStore.java
+++ b/networksecurity/service/src/com/android/server/net/ct/DataStore.java
@@ -44,8 +44,9 @@
         }
         try (InputStream in = new FileInputStream(mPropertyFile)) {
             load(in);
-        } catch (IOException e) {
+        } catch (IOException | IllegalArgumentException e) {
             Log.e(TAG, "Error loading property store", e);
+            delete();
         }
     }
 
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java b/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
index 54f7ca3..c3306bd 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsAdvertiser.java
@@ -1007,6 +1007,19 @@
         });
     }
 
+    private List<String> getOffloadSubtype(@NonNull NsdServiceInfo nsdServiceInfo) {
+        // Workaround: Google Cast doesn't announce subtypes per DNS-SD/mDNS spec.
+        // Thus, subtypes aren't offloaded; only "_googlecast._tcp" is.
+        // Subtype responses occur when hardware offload is off.
+        // This solution works because Google Cast doesn't follow the intended usage of subtypes in
+        // the spec, as it always discovers for both the subtype+base type, and only uses the mDNS
+        // subtype as an optimization.
+        if (nsdServiceInfo.getServiceType().equals("_googlecast._tcp")) {
+            return new ArrayList<>();
+        }
+        return new ArrayList<>(nsdServiceInfo.getSubtypes());
+    }
+
     private OffloadServiceInfoWrapper createOffloadService(int serviceId,
             @NonNull Registration registration, byte[] rawOffloadPacket) {
         final NsdServiceInfo nsdServiceInfo = registration.getServiceInfo();
@@ -1017,7 +1030,7 @@
         final OffloadServiceInfo offloadServiceInfo = new OffloadServiceInfo(
                 new OffloadServiceInfo.Key(nsdServiceInfo.getServiceName(),
                         nsdServiceInfo.getServiceType()),
-                new ArrayList<>(nsdServiceInfo.getSubtypes()),
+                getOffloadSubtype(nsdServiceInfo),
                 String.join(".", mDeviceHostName),
                 rawOffloadPacket,
                 priority,
diff --git a/service-t/src/com/android/server/net/NetworkStatsService.java b/service-t/src/com/android/server/net/NetworkStatsService.java
index a8e3203..27f039f 100644
--- a/service-t/src/com/android/server/net/NetworkStatsService.java
+++ b/service-t/src/com/android/server/net/NetworkStatsService.java
@@ -191,7 +191,6 @@
 import com.android.networkstack.apishim.BroadcastOptionsShimImpl;
 import com.android.networkstack.apishim.ConstantsShim;
 import com.android.networkstack.apishim.common.UnsupportedApiLevelException;
-import com.android.server.BpfNetMaps;
 import com.android.server.connectivity.ConnectivityResources;
 
 import java.io.File;
@@ -726,11 +725,6 @@
             mTrafficStatsUidCache = null;
         }
 
-        // TODO: Remove bpfNetMaps creation and always start SkDestroyListener
-        // Following code is for the experiment to verify the SkDestroyListener refactoring. Based
-        // on the experiment flag, BpfNetMaps starts C SkDestroyListener (existing code) or
-        // NetworkStatsService starts Java SkDestroyListener (new code).
-        final BpfNetMaps bpfNetMaps = mDeps.makeBpfNetMaps(mContext);
         mSkDestroyListener = mDeps.makeSkDestroyListener(mCookieTagMap, mHandler);
         mHandler.post(mSkDestroyListener::start);
     }
@@ -952,11 +946,6 @@
             return Build.isDebuggable();
         }
 
-        /** Create a new BpfNetMaps. */
-        public BpfNetMaps makeBpfNetMaps(Context ctx) {
-            return new BpfNetMaps(ctx);
-        }
-
         /** Create a new SkDestroyListener. */
         public SkDestroyListener makeSkDestroyListener(
                 IBpfMap<CookieTagMapKey, CookieTagMapValue> cookieTagMap, Handler handler) {
diff --git a/service/ServiceConnectivityResources/res/raw/ct_public_keys.pem b/service/ServiceConnectivityResources/res/raw/ct_public_keys.pem
new file mode 100644
index 0000000..80dccbe
--- /dev/null
+++ b/service/ServiceConnectivityResources/res/raw/ct_public_keys.pem
@@ -0,0 +1,42 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/service/libconnectivity/include/connectivity_native.h b/service/libconnectivity/include/connectivity_native.h
index f4676a9..f264b68 100644
--- a/service/libconnectivity/include/connectivity_native.h
+++ b/service/libconnectivity/include/connectivity_native.h
@@ -20,12 +20,6 @@
 #include <sys/cdefs.h>
 #include <netinet/in.h>
 
-// For branches that do not yet have __ANDROID_API_U__ defined, like module
-// release branches.
-#ifndef __ANDROID_API_U__
-#define __ANDROID_API_U__ 34
-#endif
-
 __BEGIN_DECLS
 
 /**
@@ -41,7 +35,7 @@
  *
  * @param port Int corresponding to port number.
  */
-int AConnectivityNative_blockPortForBind(in_port_t port) __INTRODUCED_IN(__ANDROID_API_U__);
+int AConnectivityNative_blockPortForBind(in_port_t port) __INTRODUCED_IN(34);
 
 /**
  * Unblocks a port that has previously been blocked.
@@ -54,7 +48,7 @@
  *
  * @param port Int corresponding to port number.
  */
-int AConnectivityNative_unblockPortForBind(in_port_t port) __INTRODUCED_IN(__ANDROID_API_U__);
+int AConnectivityNative_unblockPortForBind(in_port_t port) __INTRODUCED_IN(34);
 
 /**
  * Unblocks all ports that have previously been blocked.
@@ -64,7 +58,7 @@
  *  - EPERM if the UID of the client doesn't have network stack permission
  *  - Other errors as per https://man7.org/linux/man-pages/man2/bpf.2.html
  */
-int AConnectivityNative_unblockAllPortsForBind() __INTRODUCED_IN(__ANDROID_API_U__);
+int AConnectivityNative_unblockAllPortsForBind() __INTRODUCED_IN(34);
 
 /**
  * Gets the list of ports that have been blocked.
@@ -79,7 +73,7 @@
  *              blocked ports, which may be larger than the ports array that was filled.
  */
 int AConnectivityNative_getPortsBlockedForBind(in_port_t* _Nonnull ports, size_t* _Nonnull count)
-    __INTRODUCED_IN(__ANDROID_API_U__);
+    __INTRODUCED_IN(34);
 
 __END_DECLS
 
diff --git a/service/src/com/android/server/BpfNetMaps.java b/service/src/com/android/server/BpfNetMaps.java
index c743573..7c0c223 100644
--- a/service/src/com/android/server/BpfNetMaps.java
+++ b/service/src/com/android/server/BpfNetMaps.java
@@ -38,16 +38,16 @@
 import static android.net.ConnectivityManager.BLOCKED_REASON_NONE;
 import static android.net.ConnectivityManager.FIREWALL_RULE_ALLOW;
 import static android.net.ConnectivityManager.FIREWALL_RULE_DENY;
-import static android.net.INetd.PERMISSION_INTERNET;
-import static android.net.INetd.PERMISSION_NONE;
-import static android.net.INetd.PERMISSION_UNINSTALLED;
-import static android.net.INetd.PERMISSION_UPDATE_DEVICE_STATS;
 import static android.system.OsConstants.EINVAL;
 import static android.system.OsConstants.ENODEV;
 import static android.system.OsConstants.ENOENT;
 import static android.system.OsConstants.EOPNOTSUPP;
 
 import static com.android.server.ConnectivityStatsLog.NETWORK_BPF_MAP_INFO;
+import static com.android.server.connectivity.NetworkPermissions.PERMISSION_NONE;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_INTERNET;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_UNINSTALLED;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS;
 
 import android.app.StatsManager;
 import android.content.Context;
@@ -139,8 +139,8 @@
     private static IBpfMap<U32, Bool> sLocalNetBlockedUidMap = null;
 
     private static final List<Pair<Integer, String>> PERMISSION_LIST = Arrays.asList(
-            Pair.create(PERMISSION_INTERNET, "PERMISSION_INTERNET"),
-            Pair.create(PERMISSION_UPDATE_DEVICE_STATS, "PERMISSION_UPDATE_DEVICE_STATS")
+            Pair.create(TRAFFIC_PERMISSION_INTERNET, "PERMISSION_INTERNET"),
+            Pair.create(TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS, "PERMISSION_UPDATE_DEVICE_STATS")
     );
 
     /**
@@ -464,7 +464,7 @@
      ToDo : Remove this method when SdkLevel.isAtLeastB() is fixed, aosp is at sdk level 36 or use
      NetworkStackUtils.isAtLeast25Q2 when it is moved to a static lib.
      */
-    private static boolean isAtLeast25Q2() {
+    public static boolean isAtLeast25Q2() {
         return SdkLevel.isAtLeastB()  || (SdkLevel.isAtLeastV()
                 && "Baklava".equals(Build.VERSION.CODENAME));
     }
@@ -870,7 +870,8 @@
         }
 
         // Remove the entry if package is uninstalled or uid has only INTERNET permission.
-        if (permissions == PERMISSION_UNINSTALLED || permissions == PERMISSION_INTERNET) {
+        if (permissions == TRAFFIC_PERMISSION_UNINSTALLED
+                || permissions == TRAFFIC_PERMISSION_INTERNET) {
             for (final int uid : uids) {
                 try {
                     sUidPermissionMap.deleteEntry(new S32(uid));
@@ -911,7 +912,7 @@
                     + "(" + iface + ")");
             return;
         }
-        LocalNetAccessKey localNetAccessKey = new LocalNetAccessKey(lpmBitlen, ifIndex,
+        final LocalNetAccessKey localNetAccessKey = new LocalNetAccessKey(lpmBitlen, ifIndex,
                 address, protocol, remotePort);
 
         try {
@@ -923,13 +924,43 @@
     }
 
     /**
-     * False if the configuration is disallowed.
-     *
+     * Remove configuration to local_net_access trie map.
+     * @param lpmBitlen prefix length that will be used for longest matching
+     * @param iface interface name
+     * @param address remote address. ipv4 addresses would be mapped to v6
+     * @param protocol required for longest match in special cases
+     * @param remotePort src/dst port for ingress/egress
+     */
+    @RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT)
+    public void removeLocalNetAccess(final int lpmBitlen, final String iface,
+            final InetAddress address, final int protocol, final int remotePort) {
+        throwIfPre25Q2("removeLocalNetAccess is not available on pre-B devices");
+        final int ifIndex = mDeps.getIfIndex(iface);
+        if (ifIndex == 0) {
+            Log.e(TAG, "Failed to get if index, skip removeLocalNetAccess for " + address
+                    + "(" + iface + ")");
+            return;
+        }
+        final LocalNetAccessKey localNetAccessKey = new LocalNetAccessKey(lpmBitlen, ifIndex,
+                address, protocol, remotePort);
+
+        try {
+            sLocalNetAccessMap.deleteEntry(localNetAccessKey);
+        } catch (ErrnoException e) {
+            Log.e(TAG, "Failed to remove local network access for localNetAccessKey : "
+                    + localNetAccessKey);
+        }
+    }
+
+    /**
+     * Fetches value available in local_net_access bpf map for provided configuration
      * @param lpmBitlen  prefix length that will be used for longest matching
      * @param iface    interface name
      * @param address    remote address. ipv4 addresses would be mapped to v6
      * @param protocol   required for longest match in special cases
      * @param remotePort src/dst port for ingress/egress
+     * @return false if the configuration is disallowed, true if the configuration is absent i.e. it
+     * is not local network or if configuration is allowed like local dns servers.
      */
     @RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT)
     public boolean getLocalNetAccess(final int lpmBitlen, final String iface,
@@ -941,10 +972,10 @@
                     + address + "(" + iface + ")");
             return true;
         }
-        LocalNetAccessKey localNetAccessKey = new LocalNetAccessKey(lpmBitlen, ifIndex,
+        final LocalNetAccessKey localNetAccessKey = new LocalNetAccessKey(lpmBitlen, ifIndex,
                 address, protocol, remotePort);
         try {
-            Bool value = sLocalNetAccessMap.getValue(localNetAccessKey);
+            final Bool value = sLocalNetAccessMap.getValue(localNetAccessKey);
             return value == null ? true : value.val;
         } catch (ErrnoException e) {
             Log.e(TAG, "Failed to find local network access configuration for "
@@ -972,10 +1003,10 @@
      * @param uid application uid that needs check if local network calls are blocked.
      */
     @RequiresApi(Build.VERSION_CODES.CUR_DEVELOPMENT)
-    public boolean getUidValueFromLocalNetBlockMap(final int uid) {
-        throwIfPre25Q2("getUidValueFromLocalNetBlockMap is not available on pre-B devices");
+    public boolean isUidBlockedFromUsingLocalNetwork(final int uid) {
+        throwIfPre25Q2("isUidBlockedFromUsingLocalNetwork is not available on pre-B devices");
         try {
-            Bool value = sLocalNetBlockedUidMap.getValue(new U32(uid));
+            final Bool value = sLocalNetBlockedUidMap.getValue(new U32(uid));
             return value == null ? false : value.val;
         } catch (ErrnoException e) {
             Log.e(TAG, "Failed to find uid(" + uid
@@ -1013,10 +1044,10 @@
             // Key of uid permission map is appId
             // TODO: Rename map name
             final U8 permissions = sUidPermissionMap.getValue(new S32(appId));
-            return permissions != null ? permissions.val : PERMISSION_INTERNET;
+            return permissions != null ? permissions.val : TRAFFIC_PERMISSION_INTERNET;
         } catch (ErrnoException e) {
             Log.wtf(TAG, "Failed to get permission for uid: " + uid);
-            return PERMISSION_INTERNET;
+            return TRAFFIC_PERMISSION_INTERNET;
         }
     }
 
@@ -1165,7 +1196,7 @@
         if (permissionMask == PERMISSION_NONE) {
             return "PERMISSION_NONE";
         }
-        if (permissionMask == PERMISSION_UNINSTALLED) {
+        if (permissionMask == TRAFFIC_PERMISSION_UNINSTALLED) {
             // PERMISSION_UNINSTALLED should never appear in the map
             return "PERMISSION_UNINSTALLED error!";
         }
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index 18801f0..6dbb1d8 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -109,8 +109,8 @@
 import static android.net.NetworkCapabilities.REDACT_FOR_ACCESS_FINE_LOCATION;
 import static android.net.NetworkCapabilities.REDACT_FOR_LOCAL_MAC_ADDRESS;
 import static android.net.NetworkCapabilities.REDACT_FOR_NETWORK_SETTINGS;
-import static android.net.NetworkCapabilities.RES_ID_UNSET;
 import static android.net.NetworkCapabilities.RES_ID_MATCH_ALL_RESERVATIONS;
+import static android.net.NetworkCapabilities.RES_ID_UNSET;
 import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR;
 import static android.net.NetworkCapabilities.TRANSPORT_TEST;
 import static android.net.NetworkCapabilities.TRANSPORT_VPN;
@@ -146,6 +146,8 @@
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP6_RECVMSG;
 import static com.android.net.module.util.BpfUtils.BPF_CGROUP_UDP6_SENDMSG;
 import static com.android.net.module.util.NetworkMonitorUtils.isPrivateDnsValidationRequired;
+import static com.android.net.module.util.NetworkStackConstants.IPV4_LOCAL_PREFIXES;
+import static com.android.net.module.util.NetworkStackConstants.MULTICAST_AND_BROADCAST_PREFIXES;
 import static com.android.net.module.util.PermissionUtils.enforceAnyPermissionOf;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermission;
 import static com.android.net.module.util.PermissionUtils.enforceNetworkStackPermissionOr;
@@ -214,6 +216,7 @@
 import android.net.InetAddresses;
 import android.net.IpMemoryStore;
 import android.net.IpPrefix;
+import android.net.LinkAddress;
 import android.net.LinkProperties;
 import android.net.LocalNetworkConfig;
 import android.net.LocalNetworkInfo;
@@ -561,6 +564,7 @@
     // The Context is created for UserHandle.ALL.
     private final Context mUserAllContext;
     private final Dependencies mDeps;
+    private final PermissionMonitor.Dependencies mPermissionMonitorDeps;
     private final ConnectivityFlags mFlags;
     // 0 is full bad, 100 is full good
     private int mDefaultInetConditionPublished = 0;
@@ -1020,6 +1024,8 @@
     private final LingerMonitor mLingerMonitor;
     private final SatelliteAccessController mSatelliteAccessController;
 
+    private final L2capNetworkProvider mL2capNetworkProvider;
+
     // sequence number of NetworkRequests
     private int mNextNetworkRequestId = NetworkRequest.FIRST_REQUEST_ID;
 
@@ -1620,6 +1626,11 @@
                     connectivityServiceInternalHandler);
         }
 
+        /** Creates an L2capNetworkProvider */
+        public L2capNetworkProvider makeL2capNetworkProvider(Context context) {
+            return new L2capNetworkProvider(context);
+        }
+
         /** Returns the data inactivity timeout to be used for cellular networks */
         public int getDefaultCellularDataInactivityTimeout() {
             return DeviceConfigUtils.getDeviceConfigPropertyInt(NAMESPACE_TETHERING_BOOT,
@@ -1798,12 +1809,13 @@
     public ConnectivityService(Context context) {
         this(context, getDnsResolver(context), new IpConnectivityLog(),
                 INetd.Stub.asInterface((IBinder) context.getSystemService(Context.NETD_SERVICE)),
-                new Dependencies());
+                new Dependencies(), new PermissionMonitor.Dependencies());
     }
 
     @VisibleForTesting
     protected ConnectivityService(Context context, IDnsResolver dnsresolver,
-            IpConnectivityLog logger, INetd netd, Dependencies deps) {
+            IpConnectivityLog logger, INetd netd, Dependencies deps,
+            PermissionMonitor.Dependencies mPermDeps) {
         if (DBG) log("ConnectivityService starting up");
 
         mDeps = Objects.requireNonNull(deps, "missing Dependencies");
@@ -1876,8 +1888,10 @@
         mNetd = netd;
         mBpfNetMaps = mDeps.getBpfNetMaps(mContext, netd);
         mHandlerThread = mDeps.makeHandlerThread("ConnectivityServiceThread");
+        mPermissionMonitorDeps = mPermDeps;
         mPermissionMonitor =
-                new PermissionMonitor(mContext, mNetd, mBpfNetMaps, mHandlerThread);
+                new PermissionMonitor(mContext, mNetd, mBpfNetMaps, mPermissionMonitorDeps,
+                        mHandlerThread);
         mHandlerThread.start();
         mHandler = new InternalHandler(mHandlerThread.getLooper());
         mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper());
@@ -2091,6 +2105,8 @@
         }
         mIngressToVpnAddressFiltering = mDeps.isAtLeastT()
                 && mDeps.isFeatureNotChickenedOut(mContext, INGRESS_TO_VPN_ADDRESS_FILTERING);
+
+        mL2capNetworkProvider = mDeps.makeL2capNetworkProvider(mContext);
     }
 
     /**
@@ -4126,6 +4142,10 @@
             mCarrierPrivilegeAuthenticator.start();
         }
 
+        if (mL2capNetworkProvider != null) {
+            mL2capNetworkProvider.start();
+        }
+
         // On T+ devices, register callback for statsd to pull NETWORK_BPF_MAP_INFO atom
         if (mDeps.isAtLeastT()) {
             mBpfNetMaps.setPullAtomCallback(mContext);
@@ -5683,6 +5703,7 @@
         // destroyed pending replacement they will be sent when it is disconnected.
         maybeDisableForwardRulesForDisconnectingNai(nai, false /* sendCallbacks */);
         updateIngressToVpnAddressFiltering(null, nai.linkProperties, nai);
+        updateLocalNetworkAddresses(null, nai.linkProperties);
         try {
             mNetd.networkDestroy(nai.network.getNetId());
         } catch (RemoteException | ServiceSpecificException e) {
@@ -9583,6 +9604,8 @@
 
         updateIngressToVpnAddressFiltering(newLp, oldLp, networkAgent);
 
+        updateLocalNetworkAddresses(newLp, oldLp);
+
         updateMtu(newLp, oldLp);
         // TODO - figure out what to do for clat
 //        for (LinkProperties lp : newLp.getStackedLinks()) {
@@ -9762,6 +9785,219 @@
     }
 
     /**
+     * Update Local Network Addresses to LocalNetAccess BPF map.
+     * @param newLp new link properties
+     * @param oldLp old link properties
+     */
+    private void updateLocalNetworkAddresses(@Nullable final LinkProperties newLp,
+            @NonNull final LinkProperties oldLp) {
+
+        // The maps are available only after 25Q2 release
+        if (!BpfNetMaps.isAtLeast25Q2()) {
+            return;
+        }
+
+        final CompareResult<String> interfaceDiff = new CompareResult<>(
+                oldLp != null ? oldLp.getAllInterfaceNames() : null,
+                newLp != null ? newLp.getAllInterfaceNames() : null);
+
+        for (final String iface : interfaceDiff.added) {
+            addLocalAddressesToBpfMap(iface, MULTICAST_AND_BROADCAST_PREFIXES, newLp);
+        }
+        for (final String iface : interfaceDiff.removed) {
+            removeLocalAddressesFromBpfMap(iface, MULTICAST_AND_BROADCAST_PREFIXES, oldLp);
+        }
+
+        // The both list contain current link properties + stacked links for new and old LP.
+        List<LinkProperties> newLinkProperties = new ArrayList<>();
+        List<LinkProperties> oldLinkProperties = new ArrayList<>();
+
+        if (newLp != null) {
+            newLinkProperties.add(newLp);
+            newLinkProperties.addAll(newLp.getStackedLinks());
+        }
+        if (oldLp != null) {
+            oldLinkProperties.add(oldLp);
+            oldLinkProperties.addAll(oldLp.getStackedLinks());
+        }
+
+        // map contains interface name to list of local network prefixes added because of change
+        // in link properties
+        Map<String, List<IpPrefix>> prefixesAddedForInterface = new ArrayMap<>();
+
+        final CompareResult<LinkProperties> linkPropertiesDiff = new CompareResult<>(
+                oldLinkProperties, newLinkProperties);
+
+        for (LinkProperties linkProperty : linkPropertiesDiff.added) {
+            List<IpPrefix> unicastLocalPrefixesToBeAdded = new ArrayList<>();
+            for (LinkAddress linkAddress : linkProperty.getLinkAddresses()) {
+                unicastLocalPrefixesToBeAdded.addAll(
+                        getLocalNetworkPrefixesForAddress(linkAddress));
+            }
+            addLocalAddressesToBpfMap(linkProperty.getInterfaceName(),
+                    unicastLocalPrefixesToBeAdded, linkProperty);
+
+            // adding iterface name -> ip prefixes that we added to map
+            if (!prefixesAddedForInterface.containsKey(linkProperty.getInterfaceName())) {
+                prefixesAddedForInterface.put(linkProperty.getInterfaceName(), new ArrayList<>());
+            }
+            prefixesAddedForInterface.get(linkProperty.getInterfaceName())
+                    .addAll(unicastLocalPrefixesToBeAdded);
+        }
+
+        for (LinkProperties linkProperty : linkPropertiesDiff.removed) {
+            List<IpPrefix> unicastLocalPrefixesToBeRemoved = new ArrayList<>();
+            List<IpPrefix> unicastLocalPrefixesAdded = prefixesAddedForInterface.getOrDefault(
+                    linkProperty.getInterfaceName(), new ArrayList<>());
+
+            for (LinkAddress linkAddress : linkProperty.getLinkAddresses()) {
+                unicastLocalPrefixesToBeRemoved.addAll(
+                        getLocalNetworkPrefixesForAddress(linkAddress));
+            }
+
+            // This is to ensure if 10.0.10.0/24 was added and 10.0.11.0/24 was removed both will
+            // still populate the same prefix of 10.0.0.0/8, which mean we should not remove the
+            // prefix because of removal of 10.0.11.0/24
+            unicastLocalPrefixesToBeRemoved.removeAll(unicastLocalPrefixesAdded);
+
+            removeLocalAddressesFromBpfMap(linkProperty.getInterfaceName(),
+                    new ArrayList<>(unicastLocalPrefixesToBeRemoved), linkProperty);
+        }
+    }
+
+    /**
+     * Filters IpPrefix that are local prefixes and LinkAddress is part of them.
+     * @param linkAddress link address used for filtering
+     * @return list of IpPrefix that are local addresses.
+     */
+    private List<IpPrefix> getLocalNetworkPrefixesForAddress(LinkAddress linkAddress) {
+        List<IpPrefix> localPrefixes = new ArrayList<>();
+        if (linkAddress.isIpv6()) {
+            // For IPv6, if the prefix length is greater than zero then they are part of local
+            // network
+            if (linkAddress.getPrefixLength() != 0) {
+                localPrefixes.add(
+                        new IpPrefix(linkAddress.getAddress(), linkAddress.getPrefixLength()));
+            }
+        } else {
+            // For IPv4, if the linkAddress is part of IpPrefix adding prefix to result.
+            for (IpPrefix ipv4LocalPrefix : IPV4_LOCAL_PREFIXES) {
+                if (ipv4LocalPrefix.containsPrefix(
+                        new IpPrefix(linkAddress.getAddress(), linkAddress.getPrefixLength()))) {
+                    localPrefixes.add(ipv4LocalPrefix);
+                }
+            }
+        }
+        return localPrefixes;
+    }
+
+    /**
+     * Adds list of prefixes(addresses) to local network access map.
+     * @param iface interface name
+     * @param prefixes list of prefixes/addresses
+     * @param lp LinkProperties
+     */
+    private void addLocalAddressesToBpfMap(final String iface, final List<IpPrefix> prefixes,
+                                           @Nullable final LinkProperties lp) {
+        if (!BpfNetMaps.isAtLeast25Q2()) return;
+
+        for (IpPrefix prefix : prefixes) {
+            // Add local dnses allow rule To BpfMap before adding the block rule for prefix
+            addLocalDnsesToBpfMap(iface, prefix, lp);
+            /*
+            Prefix length is used by LPM trie map(local_net_access_map) for performing longest
+            prefix matching, this length represents the maximum number of bits used for matching.
+            The interface index should always be matched which is 32-bit integer. For IPv6, prefix
+            length is calculated by adding the ip address prefix length along with interface index
+            making it (32 + length). IPv4 addresses are stored as ipv4-mapped-ipv6 which implies
+            first 96 bits are common for all ipv4 addresses. Hence, prefix length is calculated as
+            32(interface index) + 96 (common for ipv4-mapped-ipv6) + length.
+             */
+            final int prefixLengthConstant = (prefix.isIPv4() ? (32 + 96) : 32);
+            mBpfNetMaps.addLocalNetAccess(prefixLengthConstant + prefix.getPrefixLength(),
+                    iface, prefix.getAddress(), 0, 0, false);
+
+        }
+
+    }
+
+    /**
+     * Removes list of prefixes(addresses) from local network access map.
+     * @param iface interface name
+     * @param prefixes list of prefixes/addresses
+     * @param lp LinkProperties
+     */
+    private void removeLocalAddressesFromBpfMap(final String iface, final List<IpPrefix> prefixes,
+                                                @Nullable final LinkProperties lp) {
+        if (!BpfNetMaps.isAtLeast25Q2()) return;
+
+        for (IpPrefix prefix : prefixes) {
+            // The reasoning for prefix length is explained in addLocalAddressesToBpfMap()
+            final int prefixLengthConstant = (prefix.isIPv4() ? (32 + 96) : 32);
+            mBpfNetMaps.removeLocalNetAccess(prefixLengthConstant
+                    + prefix.getPrefixLength(), iface, prefix.getAddress(), 0, 0);
+
+            // Also remove the allow rule for dnses included in the prefix after removing the block
+            // rule for prefix.
+            removeLocalDnsesFromBpfMap(iface, prefix, lp);
+        }
+    }
+
+    /**
+     * Adds DNS servers to local network access map, if included in the interface prefix
+     * @param iface interface name
+     * @param prefix IpPrefix
+     * @param lp LinkProperties
+     */
+    private void addLocalDnsesToBpfMap(final String iface, IpPrefix prefix,
+            @Nullable final LinkProperties lp) {
+        if (!BpfNetMaps.isAtLeast25Q2() || lp == null) return;
+
+        for (InetAddress dnsServer : lp.getDnsServers()) {
+            // Adds dns allow rule to LocalNetAccessMap for both TCP and UDP protocol at port 53,
+            // if it is a local dns (ie. it falls in the local prefix range).
+            if (prefix.contains(dnsServer)) {
+                mBpfNetMaps.addLocalNetAccess(getIpv4MappedAddressBitLen(), iface, dnsServer,
+                        IPPROTO_UDP, 53, true);
+                mBpfNetMaps.addLocalNetAccess(getIpv4MappedAddressBitLen(), iface, dnsServer,
+                        IPPROTO_TCP, 53, true);
+            }
+        }
+    }
+
+    /**
+     * Removes DNS servers from local network access map, if included in the interface prefix
+     * @param iface interface name
+     * @param prefix IpPrefix
+     * @param lp LinkProperties
+     */
+    private void removeLocalDnsesFromBpfMap(final String iface, IpPrefix prefix,
+            @Nullable final LinkProperties lp) {
+        if (!BpfNetMaps.isAtLeast25Q2() || lp == null) return;
+
+        for (InetAddress dnsServer : lp.getDnsServers()) {
+            // Removes dns allow rule from LocalNetAccessMap for both TCP and UDP protocol
+            // at port 53, if it is a local dns (ie. it falls in the prefix range).
+            if (prefix.contains(dnsServer)) {
+                mBpfNetMaps.removeLocalNetAccess(getIpv4MappedAddressBitLen(), iface, dnsServer,
+                        IPPROTO_UDP, 53);
+                mBpfNetMaps.removeLocalNetAccess(getIpv4MappedAddressBitLen(), iface, dnsServer,
+                        IPPROTO_TCP, 53);
+            }
+        }
+    }
+
+    /**
+     * Returns total bit length of an Ipv4 mapped address.
+     */
+    private int getIpv4MappedAddressBitLen() {
+        final int ifaceLen = 32; // bit length of interface
+        final int inetAddressLen = 32 + 96; // length of ipv4 mapped addresses
+        final int portProtocolLen = 32;  //16 for port + 16 for protocol;
+        return ifaceLen + inetAddressLen + portProtocolLen;
+    }
+
+    /**
      * Have netd update routes from oldLp to newLp.
      * @return true if routes changed between oldLp and newLp
      */
diff --git a/service/src/com/android/server/L2capNetworkProvider.java b/service/src/com/android/server/L2capNetworkProvider.java
index 15c860b..72bd858 100644
--- a/service/src/com/android/server/L2capNetworkProvider.java
+++ b/service/src/com/android/server/L2capNetworkProvider.java
@@ -16,9 +16,10 @@
 
 package com.android.server;
 
-import static android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_6LOWPAN;
+import static android.content.pm.PackageManager.FEATURE_BLUETOOTH_LE;
 import static android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_ANY;
 import static android.net.L2capNetworkSpecifier.PSM_ANY;
+import static android.net.L2capNetworkSpecifier.ROLE_CLIENT;
 import static android.net.L2capNetworkSpecifier.ROLE_SERVER;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_BANDWIDTH_CONSTRAINED;
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED;
@@ -29,13 +30,13 @@
 import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
 import static android.net.NetworkCapabilities.RES_ID_MATCH_ALL_RESERVATIONS;
 import static android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH;
-import static android.content.pm.PackageManager.FEATURE_BLUETOOTH_LE;
 import static android.system.OsConstants.F_GETFL;
 import static android.system.OsConstants.F_SETFL;
 import static android.system.OsConstants.O_NONBLOCK;
 
 import android.annotation.Nullable;
 import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothManager;
 import android.bluetooth.BluetoothServerSocket;
 import android.bluetooth.BluetoothSocket;
@@ -48,12 +49,11 @@
 import android.net.NetworkProvider.NetworkOfferCallback;
 import android.net.NetworkRequest;
 import android.net.NetworkScore;
-import android.net.NetworkSpecifier;
 import android.os.Handler;
 import android.os.HandlerThread;
-import android.os.Looper;
 import android.os.ParcelFileDescriptor;
 import android.system.Os;
+import android.util.ArrayMap;
 import android.util.ArraySet;
 import android.util.Log;
 
@@ -62,6 +62,9 @@
 import com.android.server.net.L2capNetwork;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
 import java.util.Set;
 
 
@@ -88,6 +91,7 @@
     private final NetworkProvider mProvider;
     private final BlanketReservationOffer mBlanketOffer;
     private final Set<ReservedServerOffer> mReservedServerOffers = new ArraySet<>();
+    private final ClientOffer mClientOffer;
     // mBluetoothManager guaranteed non-null when read on handler thread after start() is called
     @Nullable
     private BluetoothManager mBluetoothManager;
@@ -104,12 +108,7 @@
      * requests that do not have a NetworkSpecifier set.
      */
     private class BlanketReservationOffer implements NetworkOfferCallback {
-        // Set as transport primary to ensure that the BlanketReservationOffer always outscores the
-        // ReservedServerOffer, because as soon as the BlanketReservationOffer receives an
-        // onNetworkUnneeded() callback, it will tear down the associated reserved offer.
-        public static final NetworkScore SCORE = new NetworkScore.Builder()
-                .setTransportPrimary(true)
-                .build();
+        public static final NetworkScore SCORE = new NetworkScore.Builder().build();
         // Note the missing NET_CAPABILITY_NOT_RESTRICTED marking the network as restricted.
         public static final NetworkCapabilities CAPABILITIES;
         static {
@@ -127,12 +126,7 @@
         }
 
         // TODO: consider moving this into L2capNetworkSpecifier as #isValidServerReservation().
-        private boolean isValidL2capSpecifier(@Nullable NetworkSpecifier spec) {
-            if (spec == null) return false;
-            // If spec is not null, L2capNetworkSpecifier#canBeSatisfiedBy() guarantees the
-            // specifier is of type L2capNetworkSpecifier.
-            final L2capNetworkSpecifier l2capSpec = (L2capNetworkSpecifier) spec;
-
+        private boolean isValidL2capServerSpecifier(L2capNetworkSpecifier l2capSpec) {
             // The ROLE_SERVER offer can be satisfied by a ROLE_ANY request.
             if (l2capSpec.getRole() != ROLE_SERVER) return false;
 
@@ -150,9 +144,13 @@
 
         @Override
         public void onNetworkNeeded(NetworkRequest request) {
-            Log.d(TAG, "New reservation request: " + request);
-            if (!isValidL2capSpecifier(request.getNetworkSpecifier())) {
-                Log.w(TAG, "Ignoring invalid reservation request: " + request);
+            // The NetworkSpecifier is guaranteed to be either null or an L2capNetworkSpecifier, so
+            // this cast is safe.
+            final L2capNetworkSpecifier specifier =
+                    (L2capNetworkSpecifier) request.getNetworkSpecifier();
+            if (specifier == null) return;
+            if (!isValidL2capServerSpecifier(specifier)) {
+                Log.i(TAG, "Ignoring invalid reservation request: " + request);
                 return;
             }
 
@@ -237,48 +235,128 @@
     }
 
     @Nullable
-    private static ParcelFileDescriptor createTunInterface(String ifname) {
-        final ParcelFileDescriptor fd;
-        try {
-            fd = ParcelFileDescriptor.adoptFd(
-                    ServiceConnectivityJni.createTunTap(
-                            true /*isTun*/, true /*hasCarrier*/, true /*setIffMulticast*/, ifname));
-            ServiceConnectivityJni.bringUpInterface(ifname);
-            // TODO: consider adding a parameter to createTunTap() (or the Builder that should
-            // be added) to configure i/o blocking.
-            final int flags = Os.fcntlInt(fd.getFileDescriptor(), F_GETFL, 0);
-            Os.fcntlInt(fd.getFileDescriptor(), F_SETFL, flags & ~O_NONBLOCK);
-        } catch (Exception e) {
-            // Note: createTunTap currently throws an IllegalStateException on failure.
-            // TODO: native functions should throw ErrnoException.
-            Log.e(TAG, "Failed to create tun interface", e);
-            return null;
-        }
-        return fd;
-    }
-
-    @Nullable
     private L2capNetwork createL2capNetwork(BluetoothSocket socket, NetworkCapabilities caps,
             L2capNetwork.ICallback cb) {
         final String ifname = TUN_IFNAME + String.valueOf(sTunIndex++);
-        final ParcelFileDescriptor tunFd = createTunInterface(ifname);
+        final ParcelFileDescriptor tunFd = mDeps.createTunInterface(ifname);
         if (tunFd == null) {
             return null;
         }
 
-        return new L2capNetwork(mHandler, mContext, mProvider, ifname, socket, tunFd, caps, cb);
+        return L2capNetwork.create(mHandler, mContext, mProvider, ifname, socket, tunFd, caps, cb);
     }
 
+    private static void closeBluetoothSocket(BluetoothSocket socket) {
+        try {
+            socket.close();
+        } catch (IOException e) {
+            Log.w(TAG, "Failed to close BluetoothSocket", e);
+        }
+    }
 
     private class ReservedServerOffer implements NetworkOfferCallback {
         private final NetworkCapabilities mReservedCapabilities;
-        private final BluetoothServerSocket mServerSocket;
+        private final AcceptThread mAcceptThread;
+        // This set should almost always contain at most one network. This is because all L2CAP
+        // server networks created by the same reserved offer are indistinguishable from each other,
+        // so that ConnectivityService will tear down all but the first. However, temporarily, there
+        // can be more than one network.
+        private final Set<L2capNetwork> mL2capNetworks = new ArraySet<>();
+
+        private class AcceptThread extends Thread {
+            private static final int TIMEOUT_MS = 500;
+            private final BluetoothServerSocket mServerSocket;
+            private volatile boolean mIsRunning = true;
+
+            public AcceptThread(BluetoothServerSocket serverSocket) {
+                mServerSocket = serverSocket;
+            }
+
+            private void postDestroyAndUnregisterReservedOffer() {
+                mHandler.post(() -> {
+                    destroyAndUnregisterReservedOffer(ReservedServerOffer.this);
+                });
+            }
+
+            private void postCreateServerNetwork(BluetoothSocket connectedSocket) {
+                mHandler.post(() -> {
+                    final boolean success = createServerNetwork(connectedSocket);
+                    if (!success) closeBluetoothSocket(connectedSocket);
+                });
+            }
+
+            public void run() {
+                while (mIsRunning) {
+                    final BluetoothSocket connectedSocket;
+                    try {
+                        connectedSocket = mServerSocket.accept();
+                    } catch (IOException e) {
+                        // BluetoothServerSocket was closed().
+                        if (!mIsRunning) return;
+
+                        // Else, BluetoothServerSocket encountered exception.
+                        Log.e(TAG, "BluetoothServerSocket#accept failed", e);
+                        postDestroyAndUnregisterReservedOffer();
+                        return; // stop running immediately on error
+                    }
+                    postCreateServerNetwork(connectedSocket);
+                }
+            }
+
+            public void tearDown() {
+                mIsRunning = false;
+                try {
+                    // BluetoothServerSocket.close() is thread-safe.
+                    mServerSocket.close();
+                } catch (IOException e) {
+                    Log.w(TAG, "Failed to close BluetoothServerSocket", e);
+                }
+                try {
+                    join();
+                } catch (InterruptedException e) {
+                    // join() interrupted during tearDown(). Do nothing.
+                }
+            }
+        }
+
+        private boolean createServerNetwork(BluetoothSocket socket) {
+            // It is possible the offer went away.
+            if (!mReservedServerOffers.contains(this)) return false;
+
+            if (!socket.isConnected()) {
+                Log.wtf(TAG, "BluetoothSocket must be connected");
+                return false;
+            }
+
+            final L2capNetwork network = createL2capNetwork(socket, mReservedCapabilities,
+                    new L2capNetwork.ICallback() {
+                @Override
+                public void onError(L2capNetwork network) {
+                    destroyAndUnregisterReservedOffer(ReservedServerOffer.this);
+                }
+                @Override
+                public void onNetworkUnwanted(L2capNetwork network) {
+                    // Leave reservation in place.
+                    final boolean networkExists = mL2capNetworks.remove(network);
+                    if (!networkExists) return; // already torn down.
+                    network.tearDown();
+                }
+            });
+
+            if (network == null) {
+                Log.e(TAG, "Failed to create L2capNetwork");
+                return false;
+            }
+
+            mL2capNetworks.add(network);
+            return true;
+        }
 
         public ReservedServerOffer(NetworkCapabilities reservedCapabilities,
                 BluetoothServerSocket serverSocket) {
             mReservedCapabilities = reservedCapabilities;
-            // TODO: ServerSocket will be managed by an AcceptThread.
-            mServerSocket = serverSocket;
+            mAcceptThread = new AcceptThread(serverSocket);
+            mAcceptThread.start();
         }
 
         public NetworkCapabilities getReservedCapabilities() {
@@ -287,41 +365,292 @@
 
         @Override
         public void onNetworkNeeded(NetworkRequest request) {
-            // TODO: implement
+            // UNUSED: the lifetime of the reserved network is controlled by the blanket offer.
         }
 
         @Override
         public void onNetworkUnneeded(NetworkRequest request) {
-            // TODO: implement
+            // UNUSED: the lifetime of the reserved network is controlled by the blanket offer.
+        }
+
+        /** Called when the reservation goes away and the reserved offer must be torn down. */
+        public void tearDown() {
+            mAcceptThread.tearDown();
+            for (L2capNetwork network : mL2capNetworks) {
+                network.tearDown();
+            }
+        }
+    }
+
+    private class ClientOffer implements NetworkOfferCallback {
+        public static final NetworkScore SCORE = new NetworkScore.Builder().build();
+        public static final NetworkCapabilities CAPABILITIES;
+        static {
+            // Below capabilities will match any request with an L2capNetworkSpecifier
+            // that specifies ROLE_CLIENT or without a NetworkSpecifier.
+            final L2capNetworkSpecifier l2capNetworkSpecifier = new L2capNetworkSpecifier.Builder()
+                    .setRole(ROLE_CLIENT)
+                    .build();
+            CAPABILITIES = new NetworkCapabilities.Builder(COMMON_CAPABILITIES)
+                    .setNetworkSpecifier(l2capNetworkSpecifier)
+                    .build();
+        }
+
+        private final Map<L2capNetworkSpecifier, ClientRequestInfo> mClientNetworkRequests =
+                new ArrayMap<>();
+
+        /**
+         * State object to store information for client NetworkRequests.
+         */
+        private static class ClientRequestInfo {
+            public final L2capNetworkSpecifier specifier;
+            public final List<NetworkRequest> requests = new ArrayList<>();
+            // TODO: add support for retries.
+            public final ConnectThread connectThread;
+            @Nullable
+            public L2capNetwork network;
+
+            public ClientRequestInfo(NetworkRequest request, ConnectThread connectThread) {
+                this.specifier = (L2capNetworkSpecifier) request.getNetworkSpecifier();
+                this.requests.add(request);
+                this.connectThread = connectThread;
+            }
+        }
+
+        // TODO: consider using ExecutorService
+        private class ConnectThread extends Thread {
+            private final L2capNetworkSpecifier mSpecifier;
+            private final BluetoothSocket mSocket;
+            private volatile boolean mIsAborted = false;
+
+            public ConnectThread(L2capNetworkSpecifier specifier, BluetoothSocket socket) {
+                mSpecifier = specifier;
+                mSocket = socket;
+            }
+
+            public void run() {
+                try {
+                    mSocket.connect();
+                    mHandler.post(() -> {
+                        final boolean success = createClientNetwork(mSpecifier, mSocket);
+                        if (!success) closeBluetoothSocket(mSocket);
+                    });
+                } catch (IOException e) {
+                    Log.e(TAG, "Failed to connect", e);
+                    if (mIsAborted) return;
+
+                    closeBluetoothSocket(mSocket);
+                    mHandler.post(() -> {
+                        declareAllNetworkRequestsUnfulfillable(mSpecifier);
+                    });
+                }
+            }
+
+            public void abort() {
+                mIsAborted = true;
+                // Closing the BluetoothSocket is the only way to unblock connect() because it calls
+                // shutdown on the underlying (connected) SOCK_SEQPACKET.
+                // It is safe to call BluetoothSocket#close() multiple times.
+                closeBluetoothSocket(mSocket);
+                try {
+                    join();
+                } catch (InterruptedException e) {
+                    Log.i(TAG, "Interrupted while joining ConnectThread", e);
+                }
+            }
+        }
+
+        private boolean createClientNetwork(L2capNetworkSpecifier specifier,
+                BluetoothSocket socket) {
+            // Check whether request still exists
+            final ClientRequestInfo cri = mClientNetworkRequests.get(specifier);
+            if (cri == null) return false;
+
+            final NetworkCapabilities caps = new NetworkCapabilities.Builder(CAPABILITIES)
+                    .setNetworkSpecifier(specifier)
+                    .build();
+
+            final L2capNetwork network = createL2capNetwork(socket, caps,
+                    new L2capNetwork.ICallback() {
+                // TODO: do not send onUnavailable() after the network has become available. The
+                // right thing to do here is to tearDown the network (if it still exists, because
+                // note that the request might have already been removed in the meantime, so
+                // `network` cannot be used directly.
+                @Override
+                public void onError(L2capNetwork network) {
+                    declareAllNetworkRequestsUnfulfillable(specifier);
+                }
+                @Override
+                public void onNetworkUnwanted(L2capNetwork network) {
+                    declareAllNetworkRequestsUnfulfillable(specifier);
+                }
+            });
+            if (network == null) return false;
+
+            cri.network = network;
+            return true;
+        }
+
+        private boolean isValidL2capClientSpecifier(L2capNetworkSpecifier l2capSpec) {
+            // The ROLE_CLIENT offer can be satisfied by a ROLE_ANY request.
+            if (l2capSpec.getRole() != ROLE_CLIENT) return false;
+
+            // HEADER_COMPRESSION_ANY is never valid in a request.
+            if (l2capSpec.getHeaderCompression() == HEADER_COMPRESSION_ANY) return false;
+
+            // remoteAddr must not be null for ROLE_CLIENT requests.
+            if (l2capSpec.getRemoteAddress() == null) return false;
+
+            // Client network requests require a PSM to be specified.
+            // Ensure the PSM is within the valid range of dynamic BLE L2CAP values.
+            if (l2capSpec.getPsm() < 0x80) return false;
+            if (l2capSpec.getPsm() > 0xFF) return false;
+
+            return true;
+        }
+
+        @Override
+        public void onNetworkNeeded(NetworkRequest request) {
+            // The NetworkSpecifier is guaranteed to be either null or an L2capNetworkSpecifier, so
+            // this cast is safe.
+            final L2capNetworkSpecifier requestSpecifier =
+                    (L2capNetworkSpecifier) request.getNetworkSpecifier();
+            if (requestSpecifier == null) return;
+            if (!isValidL2capClientSpecifier(requestSpecifier)) {
+                Log.i(TAG, "Ignoring invalid client request: " + request);
+                return;
+            }
+
+             // Check whether this exact request is already being tracked.
+            final ClientRequestInfo cri = mClientNetworkRequests.get(requestSpecifier);
+            if (cri != null) {
+                Log.d(TAG, "The request is already being tracked. NetworkRequest: " + request);
+                cri.requests.add(request);
+                return;
+            }
+
+            // Check whether a fuzzy match shows a mismatch in header compression by calling
+            // canBeSatisfiedBy().
+            // TODO: Add a copy constructor to L2capNetworkSpecifier.Builder.
+            final L2capNetworkSpecifier matchAnyHeaderCompressionSpecifier =
+                    new L2capNetworkSpecifier.Builder()
+                            .setRole(requestSpecifier.getRole())
+                            .setRemoteAddress(requestSpecifier.getRemoteAddress())
+                            .setPsm(requestSpecifier.getPsm())
+                            .setHeaderCompression(HEADER_COMPRESSION_ANY)
+                            .build();
+            for (L2capNetworkSpecifier existingSpecifier : mClientNetworkRequests.keySet()) {
+                if (existingSpecifier.canBeSatisfiedBy(matchAnyHeaderCompressionSpecifier)) {
+                    // This requeset can never be serviced as this network already exists with a
+                    // different header compression mechanism.
+                    mProvider.declareNetworkRequestUnfulfillable(request);
+                    return;
+                }
+            }
+
+            // If the code reaches here, this is a new request.
+            final BluetoothAdapter bluetoothAdapter = mBluetoothManager.getAdapter();
+            if (bluetoothAdapter == null) {
+                Log.w(TAG, "Failed to get BluetoothAdapter");
+                mProvider.declareNetworkRequestUnfulfillable(request);
+                return;
+            }
+
+            final byte[] macAddress = requestSpecifier.getRemoteAddress().toByteArray();
+            final BluetoothDevice bluetoothDevice = bluetoothAdapter.getRemoteDevice(macAddress);
+            final BluetoothSocket socket;
+            try {
+                socket = bluetoothDevice.createInsecureL2capChannel(requestSpecifier.getPsm());
+            } catch (IOException e) {
+                Log.w(TAG, "Failed to createInsecureL2capChannel", e);
+                mProvider.declareNetworkRequestUnfulfillable(request);
+                return;
+            }
+
+            final ConnectThread connectThread = new ConnectThread(requestSpecifier, socket);
+            connectThread.start();
+            final ClientRequestInfo newRequestInfo = new ClientRequestInfo(request, connectThread);
+            mClientNetworkRequests.put(requestSpecifier, newRequestInfo);
+        }
+
+        @Override
+        public void onNetworkUnneeded(NetworkRequest request) {
+            final L2capNetworkSpecifier specifier =
+                    (L2capNetworkSpecifier) request.getNetworkSpecifier();
+
+            // Map#get() is safe to call with null key
+            final ClientRequestInfo cri = mClientNetworkRequests.get(specifier);
+            if (cri == null) return;
+
+            cri.requests.remove(request);
+            if (cri.requests.size() > 0) return;
+
+            // If the code reaches here, the network needs to be torn down.
+            releaseClientNetworkRequest(cri);
         }
 
         /**
-         * Called when the reservation goes away and the reserved offer must be torn down.
+         * Release the client network request and tear down all associated state.
          *
-         * This method can be called multiple times.
+         * Only call this when all associated NetworkRequests have been released.
          */
-        public void tearDown() {
-            try {
-                mServerSocket.close();
-            } catch (IOException e) {
-                Log.w(TAG, "Failed to close BluetoothServerSocket", e);
+        private void releaseClientNetworkRequest(ClientRequestInfo cri) {
+            mClientNetworkRequests.remove(cri.specifier);
+            if (cri.connectThread.isAlive()) {
+                // Note that if ConnectThread succeeds between calling #isAlive() and #abort(), the
+                // request will already be removed from mClientNetworkRequests by the time the
+                // createClientNetwork() call is processed on the handler, so it is safe to call
+                // #abort().
+                cri.connectThread.abort();
             }
+
+            if (cri.network != null) {
+                cri.network.tearDown();
+            }
+        }
+
+        private void declareAllNetworkRequestsUnfulfillable(L2capNetworkSpecifier specifier) {
+            final ClientRequestInfo cri = mClientNetworkRequests.get(specifier);
+            if (cri == null) return;
+
+            for (NetworkRequest request : cri.requests) {
+                mProvider.declareNetworkRequestUnfulfillable(request);
+            }
+            releaseClientNetworkRequest(cri);
         }
     }
 
     @VisibleForTesting
     public static class Dependencies {
-        /** Get NetworkProvider */
-        public NetworkProvider getNetworkProvider(Context context, Looper looper) {
-            return new NetworkProvider(context, looper, TAG);
-        }
-
         /** Get the HandlerThread for L2capNetworkProvider to run on */
         public HandlerThread getHandlerThread() {
             final HandlerThread thread = new HandlerThread("L2capNetworkProviderThread");
             thread.start();
             return thread;
         }
+
+        @Nullable
+        public ParcelFileDescriptor createTunInterface(String ifname) {
+            final ParcelFileDescriptor fd;
+            try {
+                fd = ParcelFileDescriptor.adoptFd(ServiceConnectivityJni.createTunTap(
+                        true /*isTun*/,
+                        true /*hasCarrier*/,
+                        true /*setIffMulticast*/,
+                        ifname));
+                ServiceConnectivityJni.bringUpInterface(ifname);
+                // TODO: consider adding a parameter to createTunTap() (or the Builder that should
+                // be added) to configure i/o blocking.
+                final int flags = Os.fcntlInt(fd.getFileDescriptor(), F_GETFL, 0);
+                Os.fcntlInt(fd.getFileDescriptor(), F_SETFL, flags & ~O_NONBLOCK);
+            } catch (Exception e) {
+                // Note: createTunTap currently throws an IllegalStateException on failure.
+                // TODO: native functions should throw ErrnoException.
+                Log.e(TAG, "Failed to create tun interface", e);
+                return null;
+            }
+            return fd;
+        }
     }
 
     public L2capNetworkProvider(Context context) {
@@ -334,8 +663,9 @@
         mContext = context;
         mHandlerThread = mDeps.getHandlerThread();
         mHandler = new Handler(mHandlerThread.getLooper());
-        mProvider = mDeps.getNetworkProvider(context, mHandlerThread.getLooper());
+        mProvider = new NetworkProvider(context, mHandlerThread.getLooper(), TAG);
         mBlanketOffer = new BlanketReservationOffer();
+        mClientOffer = new ClientOffer();
     }
 
     /**
@@ -358,6 +688,8 @@
             mContext.getSystemService(ConnectivityManager.class).registerNetworkProvider(mProvider);
             mProvider.registerNetworkOffer(BlanketReservationOffer.SCORE,
                     BlanketReservationOffer.CAPABILITIES, mHandler::post, mBlanketOffer);
+            mProvider.registerNetworkOffer(ClientOffer.SCORE,
+                    ClientOffer.CAPABILITIES, mHandler::post, mClientOffer);
         });
     }
 }
diff --git a/service/src/com/android/server/connectivity/NetworkPermissions.java b/service/src/com/android/server/connectivity/NetworkPermissions.java
new file mode 100644
index 0000000..9543d8f
--- /dev/null
+++ b/service/src/com/android/server/connectivity/NetworkPermissions.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2025 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 android.net.INetd;
+
+/**
+ * A wrapper class for managing network and traffic permissions.
+ *
+ * This class encapsulates permissions represented as a bitmask, as defined in INetd.aidl
+ * and used within PermissionMonitor.java.  It distinguishes between two types of permissions:
+ *
+ * 1. Network Permissions: These permissions, declared in INetd.aidl, are used
+ *    by the Android platform's network daemon (system/netd) to control network
+ *    management
+ *
+ * 2. Traffic Permissions: These permissions are used internally by PermissionMonitor.java and
+ *    BpfNetMaps.java to manage fine-grained network traffic filtering and control.
+ *
+ * This wrapper ensures that no new permission definitions, here or in aidl, conflict with any
+ * existing permissions. This prevents unintended interactions or overrides.
+ *
+ * @hide
+ */
+public class NetworkPermissions {
+
+    /*
+     * Below are network permissions declared in INetd.aidl and used by the platform. Using these is
+     * equivalent to using the values in android.net.INetd.
+     */
+    public static final int PERMISSION_NONE = INetd.PERMISSION_NONE; /* 0 */
+    public static final int PERMISSION_NETWORK = INetd.PERMISSION_NETWORK; /* 1 */
+    public static final int PERMISSION_SYSTEM = INetd.PERMISSION_SYSTEM; /* 2 */
+
+    /*
+     * Below are traffic permissions used by PermissionMonitor and BpfNetMaps.
+     */
+
+    /**
+     * PERMISSION_UNINSTALLED is used when an app is uninstalled from the device. All internet
+     * related permissions need to be cleaned.
+     */
+    public static final int TRAFFIC_PERMISSION_UNINSTALLED = -1;
+
+    /**
+     * PERMISSION_INTERNET indicates that the app can create AF_INET and AF_INET6 sockets.
+     */
+    public static final int TRAFFIC_PERMISSION_INTERNET = 4;
+
+    /**
+     * PERMISSION_UPDATE_DEVICE_STATS is used for system UIDs and privileged apps
+     * that have the UPDATE_DEVICE_STATS permission.
+     */
+    public static final int TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS = 8;
+
+    /**
+     * TRAFFIC_PERMISSION_SDKSANDBOX_LOCALHOST indicates if an SdkSandbox UID will be allowed
+     * to connect to localhost. For non SdkSandbox UIDs this bit is a no-op.
+     */
+    public static final int TRAFFIC_PERMISSION_SDKSANDBOX_LOCALHOST = 16;
+}
diff --git a/service/src/com/android/server/connectivity/PermissionMonitor.java b/service/src/com/android/server/connectivity/PermissionMonitor.java
index 0d388e8..5de5f61 100755
--- a/service/src/com/android/server/connectivity/PermissionMonitor.java
+++ b/service/src/com/android/server/connectivity/PermissionMonitor.java
@@ -19,27 +19,29 @@
 import static android.Manifest.permission.CHANGE_NETWORK_STATE;
 import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
 import static android.Manifest.permission.INTERNET;
+import static android.Manifest.permission.NEARBY_WIFI_DEVICES;
 import static android.Manifest.permission.NETWORK_STACK;
 import static android.Manifest.permission.UPDATE_DEVICE_STATS;
 import static android.content.pm.PackageInfo.REQUESTED_PERMISSION_GRANTED;
 import static android.content.pm.PackageManager.GET_PERMISSIONS;
 import static android.net.ConnectivitySettingsManager.UIDS_ALLOWED_ON_RESTRICTED_NETWORKS;
-import static android.net.INetd.PERMISSION_INTERNET;
-import static android.net.INetd.PERMISSION_NETWORK;
-import static android.net.INetd.PERMISSION_NONE;
-import static android.net.INetd.PERMISSION_SYSTEM;
-import static android.net.INetd.PERMISSION_UNINSTALLED;
-import static android.net.INetd.PERMISSION_UPDATE_DEVICE_STATS;
 import static android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK;
 import static android.net.connectivity.ConnectivityCompatChanges.RESTRICT_LOCAL_NETWORK;
 import static android.os.Process.INVALID_UID;
 import static android.os.Process.SYSTEM_UID;
 
+import static com.android.server.connectivity.NetworkPermissions.PERMISSION_NETWORK;
+import static com.android.server.connectivity.NetworkPermissions.PERMISSION_NONE;
+import static com.android.server.connectivity.NetworkPermissions.PERMISSION_SYSTEM;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_INTERNET;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_UNINSTALLED;
+import static com.android.server.connectivity.NetworkPermissions.TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS;
 import static com.android.net.module.util.CollectionUtils.toIntArray;
 
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.app.compat.CompatChanges;
+import android.content.AttributionSource;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -62,6 +64,7 @@
 import android.os.SystemConfigManager;
 import android.os.UserHandle;
 import android.os.UserManager;
+import android.permission.PermissionManager;
 import android.provider.Settings;
 import android.util.ArrayMap;
 import android.util.ArraySet;
@@ -72,7 +75,6 @@
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.IndentingPrintWriter;
 import com.android.modules.utils.build.SdkLevel;
-import com.android.net.flags.Flags;
 import com.android.net.module.util.CollectionUtils;
 import com.android.net.module.util.SharedLog;
 import com.android.networkstack.apishim.ProcessShimImpl;
@@ -99,6 +101,8 @@
     private final PackageManager mPackageManager;
     private final UserManager mUserManager;
     private final SystemConfigManager mSystemConfigManager;
+    private final PermissionManager mPermissionManager;
+    private final PermissionChangeListener mPermissionChangeListener;
     private final INetd mNetd;
     private final Dependencies mDeps;
     private final Context mContext;
@@ -230,6 +234,12 @@
             context.getContentResolver().registerContentObserver(
                     uri, notifyForDescendants, observer);
         }
+
+        public boolean shouldEnforceLocalNetRestrictions(int uid) {
+            // TODO(b/394567896): Update compat change checks for enforcement
+            return BpfNetMaps.isAtLeast25Q2() &&
+                    CompatChanges.isChangeEnabled(RESTRICT_LOCAL_NETWORK, uid);
+        }
     }
 
     private static class MultiSet<T> {
@@ -270,23 +280,48 @@
     }
 
     @VisibleForTesting
-    PermissionMonitor(@NonNull final Context context, @NonNull final INetd netd,
+    public PermissionMonitor(@NonNull final Context context, @NonNull final INetd netd,
             @NonNull final BpfNetMaps bpfNetMaps,
             @NonNull final Dependencies deps,
             @NonNull final HandlerThread thread) {
         mPackageManager = context.getPackageManager();
         mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
         mSystemConfigManager = context.getSystemService(SystemConfigManager.class);
+        mPermissionManager = context.getSystemService(PermissionManager.class);
+        mPermissionChangeListener = new PermissionChangeListener();
         mNetd = netd;
         mDeps = deps;
         mContext = context;
         mBpfNetMaps = bpfNetMaps;
         mThread = thread;
-        if (Flags.restrictLocalNetwork()) {
+        if (BpfNetMaps.isAtLeast25Q2()) {
+            // Local net restrictions is supported as a developer opt-in starting in Android B.
             // This listener should finish registration by the time the system has completed
             // boot setup such that any changes to runtime permissions for local network
             // restrictions can only occur after this registration has completed.
-            mPackageManager.addOnPermissionsChangeListener(new PermissionChangeListener());
+            mPackageManager.addOnPermissionsChangeListener(mPermissionChangeListener);
+        }
+    }
+
+    @VisibleForTesting
+    void setLocalNetworkPermissions(final int uid, @Nullable final String packageName) {
+        if (!mDeps.shouldEnforceLocalNetRestrictions(uid)) return;
+
+        final AttributionSource attributionSource =
+                new AttributionSource.Builder(uid).setPackageName(packageName).build();
+        final int permissionState = mPermissionManager.checkPermissionForPreflight(
+                NEARBY_WIFI_DEVICES, attributionSource);
+        if (permissionState == PermissionManager.PERMISSION_GRANTED) {
+            mBpfNetMaps.removeUidFromLocalNetBlockMap(attributionSource.getUid());
+        } else {
+            mBpfNetMaps.addUidToLocalNetBlockMap(attributionSource.getUid());
+        }
+        if (hasSdkSandbox(uid)){
+            // SDKs in the SDK RT cannot hold runtime permissions
+            final int sdkSandboxUid = sProcessShim.toSdkSandboxUid(uid);
+            if (!mBpfNetMaps.isUidBlockedFromUsingLocalNetwork(sdkSandboxUid)) {
+                mBpfNetMaps.addUidToLocalNetBlockMap(sdkSandboxUid);
+            }
         }
     }
 
@@ -350,6 +385,7 @@
                     uidsPerm.put(sdkSandboxUid, permission);
                 }
             }
+            setLocalNetworkPermissions(uid, app.packageName);
         }
         return uidsPerm;
     }
@@ -404,7 +440,7 @@
         final SparseIntArray appIdsPerm = new SparseIntArray();
         for (final int uid : mSystemConfigManager.getSystemPermissionUids(INTERNET)) {
             final int appId = UserHandle.getAppId(uid);
-            final int permission = appIdsPerm.get(appId) | PERMISSION_INTERNET;
+            final int permission = appIdsPerm.get(appId) | TRAFFIC_PERMISSION_INTERNET;
             appIdsPerm.put(appId, permission);
             if (hasSdkSandbox(appId)) {
                 appIdsPerm.put(sProcessShim.toSdkSandboxUid(appId), permission);
@@ -412,7 +448,7 @@
         }
         for (final int uid : mSystemConfigManager.getSystemPermissionUids(UPDATE_DEVICE_STATS)) {
             final int appId = UserHandle.getAppId(uid);
-            final int permission = appIdsPerm.get(appId) | PERMISSION_UPDATE_DEVICE_STATS;
+            final int permission = appIdsPerm.get(appId) | TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS;
             appIdsPerm.put(appId, permission);
             if (hasSdkSandbox(appId)) {
                 appIdsPerm.put(sProcessShim.toSdkSandboxUid(appId), permission);
@@ -597,7 +633,7 @@
 
         final List<PackageInfo> apps = getInstalledPackagesAsUser(user);
 
-        // Save all apps
+        // Save all apps in mAllApps
         updateAllApps(apps);
 
         // Uids network permissions
@@ -634,6 +670,11 @@
             final int uid = allUids.keyAt(i);
             if (user.equals(UserHandle.getUserHandleForUid(uid))) {
                 mUidToNetworkPerm.delete(uid);
+                if (mDeps.shouldEnforceLocalNetRestrictions(uid)) {
+                    mBpfNetMaps.removeUidFromLocalNetBlockMap(uid);
+                    if (hasSdkSandbox(uid)) mBpfNetMaps.removeUidFromLocalNetBlockMap(
+                            sProcessShim.toSdkSandboxUid(uid));
+                }
                 removedUids.put(uid, allUids.valueAt(i));
             }
         }
@@ -655,7 +696,7 @@
             final int appId = removedUserAppIds.keyAt(i);
             // Need to clear permission if the removed appId is not found in the array.
             if (appIds.indexOfKey(appId) < 0) {
-                appIds.put(appId, PERMISSION_UNINSTALLED);
+                appIds.put(appId, TRAFFIC_PERMISSION_UNINSTALLED);
             }
         }
         sendAppIdsTrafficPermission(appIds);
@@ -707,7 +748,7 @@
             }
         } else {
             // The last package of this uid is removed from device. Clean the package up.
-            permission = PERMISSION_UNINSTALLED;
+            permission = TRAFFIC_PERMISSION_UNINSTALLED;
         }
         return permission;
     }
@@ -750,13 +791,13 @@
                 return "NETWORK";
             case PERMISSION_SYSTEM:
                 return "SYSTEM";
-            case PERMISSION_INTERNET:
+            case TRAFFIC_PERMISSION_INTERNET:
                 return "INTERNET";
-            case PERMISSION_UPDATE_DEVICE_STATS:
+            case TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS:
                 return "UPDATE_DEVICE_STATS";
-            case (PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS):
+            case (TRAFFIC_PERMISSION_INTERNET | TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS):
                 return "ALL";
-            case PERMISSION_UNINSTALLED:
+            case TRAFFIC_PERMISSION_UNINSTALLED:
                 return "UNINSTALLED";
             default:
                 return "UNKNOWN";
@@ -775,7 +816,7 @@
         // (PERMISSION_UNINSTALLED), remove the appId from the array. Otherwise, update the latest
         // permission to the appId.
         final int appId = UserHandle.getAppId(uid);
-        if (uidTrafficPerm == PERMISSION_UNINSTALLED) {
+        if (uidTrafficPerm == TRAFFIC_PERMISSION_UNINSTALLED) {
             userTrafficPerms.delete(appId);
         } else {
             userTrafficPerms.put(appId, uidTrafficPerm);
@@ -793,7 +834,7 @@
                 installed = true;
             }
         }
-        return installed ? permission : PERMISSION_UNINSTALLED;
+        return installed ? permission : TRAFFIC_PERMISSION_UNINSTALLED;
     }
 
     /**
@@ -828,6 +869,7 @@
             }
             sendUidsNetworkPermission(apps, true /* add */);
         }
+        setLocalNetworkPermissions(uid, packageName);
 
         // If the newly-installed package falls within some VPN's uid range, update Netd with it.
         // This needs to happen after the mUidToNetworkPerm update above, since
@@ -872,6 +914,11 @@
     synchronized void onPackageRemoved(@NonNull final String packageName, final int uid) {
         // Update uid permission.
         updateAppIdTrafficPermission(uid);
+        if (BpfNetMaps.isAtLeast25Q2()) {
+            mBpfNetMaps.removeUidFromLocalNetBlockMap(uid);
+            if (hasSdkSandbox(uid)) mBpfNetMaps.removeUidFromLocalNetBlockMap(
+                    sProcessShim.toSdkSandboxUid(uid));
+        }
         // Get the appId permission from all users then send the latest permission to netd.
         final int appId = UserHandle.getAppId(uid);
         final int appIdTrafficPerm = getAppIdTrafficPermission(appId);
@@ -930,11 +977,11 @@
         for (int i = 0; i < requestedPermissions.length; i++) {
             if (requestedPermissions[i].equals(INTERNET)
                     && ((requestedPermissionsFlags[i] & REQUESTED_PERMISSION_GRANTED) != 0)) {
-                permissions |= PERMISSION_INTERNET;
+                permissions |= TRAFFIC_PERMISSION_INTERNET;
             }
             if (requestedPermissions[i].equals(UPDATE_DEVICE_STATS)
                     && ((requestedPermissionsFlags[i] & REQUESTED_PERMISSION_GRANTED) != 0)) {
-                permissions |= PERMISSION_UPDATE_DEVICE_STATS;
+                permissions |= TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS;
             }
         }
         return permissions;
@@ -1173,19 +1220,19 @@
         for (int i = 0; i < netdPermissionsAppIds.size(); i++) {
             int permissions = netdPermissionsAppIds.valueAt(i);
             switch(permissions) {
-                case (PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS):
+                case (TRAFFIC_PERMISSION_INTERNET | TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS):
                     allPermissionAppIds.add(netdPermissionsAppIds.keyAt(i));
                     break;
-                case PERMISSION_INTERNET:
+                case TRAFFIC_PERMISSION_INTERNET:
                     internetPermissionAppIds.add(netdPermissionsAppIds.keyAt(i));
                     break;
-                case PERMISSION_UPDATE_DEVICE_STATS:
+                case TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS:
                     updateStatsPermissionAppIds.add(netdPermissionsAppIds.keyAt(i));
                     break;
                 case PERMISSION_NONE:
                     noPermissionAppIds.add(netdPermissionsAppIds.keyAt(i));
                     break;
-                case PERMISSION_UNINSTALLED:
+                case TRAFFIC_PERMISSION_UNINSTALLED:
                     uninstalledAppIds.add(netdPermissionsAppIds.keyAt(i));
                     break;
                 default:
@@ -1197,15 +1244,15 @@
             // TODO: add a lock inside netd to protect IPC trafficSetNetPermForUids()
             if (allPermissionAppIds.size() != 0) {
                 mBpfNetMaps.setNetPermForUids(
-                        PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS,
+                        TRAFFIC_PERMISSION_INTERNET | TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS,
                         toIntArray(allPermissionAppIds));
             }
             if (internetPermissionAppIds.size() != 0) {
-                mBpfNetMaps.setNetPermForUids(PERMISSION_INTERNET,
+                mBpfNetMaps.setNetPermForUids(TRAFFIC_PERMISSION_INTERNET,
                         toIntArray(internetPermissionAppIds));
             }
             if (updateStatsPermissionAppIds.size() != 0) {
-                mBpfNetMaps.setNetPermForUids(PERMISSION_UPDATE_DEVICE_STATS,
+                mBpfNetMaps.setNetPermForUids(TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS,
                         toIntArray(updateStatsPermissionAppIds));
             }
             if (noPermissionAppIds.size() != 0) {
@@ -1213,7 +1260,7 @@
                         toIntArray(noPermissionAppIds));
             }
             if (uninstalledAppIds.size() != 0) {
-                mBpfNetMaps.setNetPermForUids(PERMISSION_UNINSTALLED,
+                mBpfNetMaps.setNetPermForUids(TRAFFIC_PERMISSION_UNINSTALLED,
                         toIntArray(uninstalledAppIds));
             }
         } catch (RemoteException | ServiceSpecificException e) {
@@ -1324,15 +1371,7 @@
     private class PermissionChangeListener implements PackageManager.OnPermissionsChangedListener {
         @Override
         public void onPermissionsChanged(int uid) {
-            // RESTRICT_LOCAL_NETWORK is a compat change that is enabled when developers manually
-            // opt-in to this change, or when the app's targetSdkVersion is greater than 36.
-            // The RESTRICT_LOCAL_NETWORK compat change is used here instead of the
-            // Flags.restrictLocalNetwork() is used to offer the feature to devices, but it will
-            // only be enforced when develoeprs choose to enable it.
-            // TODO(b/394567896): Update compat change checks
-            if (CompatChanges.isChangeEnabled(RESTRICT_LOCAL_NETWORK, uid)) {
-                // TODO(b/388803658): Update network permissions and record change
-            }
+            setLocalNetworkPermissions(uid, null);
         }
     }
 }
diff --git a/service/src/com/android/server/net/HeaderCompressionUtils.java b/service/src/com/android/server/net/HeaderCompressionUtils.java
new file mode 100644
index 0000000..5bd3a76
--- /dev/null
+++ b/service/src/com/android/server/net/HeaderCompressionUtils.java
@@ -0,0 +1,275 @@
+/*
+ * Copyright (C) 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.net;
+
+import android.util.Log;
+
+import java.io.IOException;
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+public class HeaderCompressionUtils {
+    private static final String TAG = "L2capHeaderCompressionUtils";
+    private static final int IPV6_HEADER_SIZE = 40;
+
+    private static byte[] decodeIpv6Address(ByteBuffer buffer, int mode, boolean isMulticast)
+            throws BufferUnderflowException, IOException {
+        // Mode is equivalent between SAM and DAM; however, isMulticast only applies to DAM.
+        final byte[] address = new byte[16];
+        // If multicast bit is set, mix it in the mode, so that the lower two bits represent the
+        // address mode, and the upper bit represents multicast compression.
+        switch ((isMulticast ? 0b100 : 0) | mode) {
+            case 0b000: // 128 bits. The full address is carried in-line.
+            case 0b100:
+                buffer.get(address);
+                break;
+            case 0b001: // 64 bits. The first 64-bits of the fe80:: address are elided.
+                address[0] = (byte) 0xfe;
+                address[1] = (byte) 0x80;
+                buffer.get(address, 8 /*off*/, 8 /*len*/);
+                break;
+            case 0b010: // 16 bits. fe80::ff:fe00:XXXX, where XXXX are the bits carried in-line
+                address[0] = (byte) 0xfe;
+                address[1] = (byte) 0x80;
+                address[11] = (byte) 0xff;
+                address[12] = (byte) 0xfe;
+                buffer.get(address, 14 /*off*/, 2 /*len*/);
+                break;
+            case 0b011: // 0 bits. The address is fully elided and derived from BLE MAC address
+                // Note that on Android, the BLE MAC addresses are not exposed via the API;
+                // therefore, this compression mode cannot be supported.
+                throw new IOException("Address cannot be fully elided");
+            case 0b101: // 48 bits. The address takes the form ffXX::00XX:XXXX:XXXX.
+                address[0] = (byte) 0xff;
+                address[1] = buffer.get();
+                buffer.get(address, 11 /*off*/, 5 /*len*/);
+                break;
+            case 0b110: // 32 bits. The address takes the form ffXX::00XX:XXXX
+                address[0] = (byte) 0xff;
+                address[1] = buffer.get();
+                buffer.get(address, 13 /*off*/, 3 /*len*/);
+                break;
+            case 0b111: // 8 bits. The address takes the form ff02::00XX.
+                address[0] = (byte) 0xff;
+                address[1] = (byte) 0x02;
+                address[15] = buffer.get();
+                break;
+        }
+        return address;
+    }
+
+    /**
+     * Performs 6lowpan header decompression in place.
+     *
+     * Note that the passed in buffer must have enough capacity for successful decompression.
+     *
+     * @param bytes The buffer containing the packet.
+     * @param len The size of the packet
+     * @return decompressed size or zero
+     * @throws BufferUnderflowException if an illegal packet is encountered.
+     * @throws IOException if an unsupported option is encountered.
+     */
+    public static int decompress6lowpan(byte[] bytes, int len)
+            throws BufferUnderflowException, IOException {
+        // Note that ByteBuffer's default byte order is big endian.
+        final ByteBuffer inBuffer = ByteBuffer.wrap(bytes);
+        inBuffer.limit(len);
+
+        // LOWPAN_IPHC base encoding:
+        //   0   1   2   3   4   5   6   7 | 8   9  10  11  12  13  14  15
+        // +---+---+---+---+---+---+---+---|---+---+---+---+---+---+---+---+
+        // | 0 | 1 | 1 |  TF   |NH | HLIM  |CID|SAC|  SAM  | M |DAC|  DAM  |
+        // +---+---+---+---+---+---+---+---|---+---+---+---+---+---+---+---+
+        final int iphc1 = inBuffer.get() & 0xff;
+        final int iphc2 = inBuffer.get() & 0xff;
+        // Dispatch must start with 0b011.
+        if ((iphc1 & 0xe0) != 0x60) {
+            throw new IOException("LOWPAN_IPHC does not start with 011");
+        }
+
+        final int tf = (iphc1 >> 3) & 3;         // Traffic class
+        final boolean nh = (iphc1 & 4) != 0;     // Next header
+        final int hlim = iphc1 & 3;              // Hop limit
+        final boolean cid = (iphc2 & 0x80) != 0; // Context identifier extension
+        final boolean sac = (iphc2 & 0x40) != 0; // Source address compression
+        final int sam = (iphc2 >> 4) & 3;        // Source address mode
+        final boolean m = (iphc2 & 8) != 0;      // Multicast compression
+        final boolean dac = (iphc2 & 4) != 0;    // Destination address compression
+        final int dam = iphc2 & 3;               // Destination address mode
+
+        final ByteBuffer ipv6Header = ByteBuffer.allocate(IPV6_HEADER_SIZE);
+
+        final int trafficClass;
+        final int flowLabel;
+        switch (tf) {
+            case 0b00: // ECN + DSCP + 4-bit Pad + Flow Label (4 bytes)
+                trafficClass = inBuffer.get() & 0xff;
+                flowLabel = (inBuffer.get() & 0x0f) << 16
+                        | (inBuffer.get() & 0xff) << 8
+                        | (inBuffer.get() & 0xff);
+                break;
+            case 0b01: // ECN + 2-bit Pad + Flow Label (3 bytes), DSCP is elided.
+                final int firstByte = inBuffer.get() & 0xff;
+                //     0     1     2     3     4     5     6     7
+                // +-----+-----+-----+-----+-----+-----+-----+-----+
+                // |          DS FIELD, DSCP           | ECN FIELD |
+                // +-----+-----+-----+-----+-----+-----+-----+-----+
+                // rfc6282 does not explicitly state what value to use for DSCP, assuming 0.
+                trafficClass = firstByte >> 6;
+                flowLabel = (firstByte & 0x0f) << 16
+                        | (inBuffer.get() & 0xff) << 8
+                        | (inBuffer.get() & 0xff);
+                break;
+            case 0b10: // ECN + DSCP (1 byte), Flow Label is elided.
+                trafficClass = inBuffer.get() & 0xff;
+                // rfc6282 does not explicitly state what value to use, assuming 0.
+                flowLabel = 0;
+                break;
+            case 0b11: // Traffic Class and Flow Label are elided.
+                // rfc6282 does not explicitly state what value to use, assuming 0.
+                trafficClass = 0;
+                flowLabel = 0;
+                break;
+            default:
+                // This cannot happen. Crash if it does.
+                throw new IllegalStateException("Illegal TF value");
+        }
+
+        // Write version, traffic class, and flow label
+        final int versionTcFlowLabel = (6 << 28) | (trafficClass << 20) | flowLabel;
+        ipv6Header.putInt(versionTcFlowLabel);
+
+        // Payload length is still unknown. Use 0 for now.
+        ipv6Header.putShort((short) 0);
+
+        // We do not use UDP or extension header compression, therefore the next header
+        // cannot be compressed.
+        if (nh) throw new IOException("Next header cannot be compressed");
+        // Write next header
+        ipv6Header.put(inBuffer.get());
+
+        final byte hopLimit;
+        switch (hlim) {
+            case 0b00: // The Hop Limit field is carried in-line.
+                hopLimit = inBuffer.get();
+                break;
+            case 0b01: // The Hop Limit field is compressed and the hop limit is 1.
+                hopLimit = 1;
+                break;
+            case 0b10: // The Hop Limit field is compressed and the hop limit is 64.
+                hopLimit = 64;
+                break;
+            case 0b11: // The Hop Limit field is compressed and the hop limit is 255.
+                hopLimit = (byte) 255;
+                break;
+            default:
+                // This cannot happen. Crash if it does.
+                throw new IllegalStateException("Illegal HLIM value");
+        }
+        ipv6Header.put(hopLimit);
+
+        if (cid) throw new IOException("Context based compression not supported");
+        if (sac) throw new IOException("Context based compression not supported");
+        if (dac) throw new IOException("Context based compression not supported");
+
+        // Write source address
+        ipv6Header.put(decodeIpv6Address(inBuffer, sam, false /* isMulticast */));
+
+        // Write destination address
+        ipv6Header.put(decodeIpv6Address(inBuffer, dam, m));
+
+        // Go back and fix up payloadLength
+        final short payloadLength = (short) inBuffer.remaining();
+        ipv6Header.putShort(4, payloadLength);
+
+        // Done! Check that 40 bytes were written.
+        if (ipv6Header.position() != IPV6_HEADER_SIZE) {
+            // This indicates a bug in our code -> crash.
+            throw new IllegalStateException("Faulty decompression wrote less than 40 bytes");
+        }
+
+        // Ensure there is enough room in the buffer
+        final int packetLength = payloadLength + IPV6_HEADER_SIZE;
+        if (bytes.length < packetLength) {
+            throw new IOException("Decompressed packet exceeds buffer size");
+        }
+
+        // Move payload bytes back to make room for the header
+        inBuffer.limit(packetLength);
+        System.arraycopy(bytes, inBuffer.position(), bytes, IPV6_HEADER_SIZE, payloadLength);
+        // Copy IPv6 header to the beginning of the buffer.
+        inBuffer.position(0);
+        ipv6Header.flip();
+        inBuffer.put(ipv6Header);
+
+        return packetLength;
+    }
+
+    /**
+     * Performs 6lowpan header compression in place.
+     *
+     * @param bytes The buffer containing the packet.
+     * @param len The size of the packet
+     * @return compressed size or zero
+     * @throws BufferUnderflowException if an illegal packet is encountered.
+     * @throws IOException if an unsupported option is encountered.
+     */
+    public static int compress6lowpan(byte[] bytes, final int len)
+            throws BufferUnderflowException, IOException {
+        // Compression only happens on egress, i.e. the packet is read from the tun fd.
+        // This means that this code can be a bit more lenient.
+        if (len < 40) {
+            Log.wtf(TAG, "Encountered short (<40 byte) packet");
+            return 0;
+        }
+
+        // Note that ByteBuffer's default byte order is big endian.
+        final ByteBuffer inBuffer = ByteBuffer.wrap(bytes);
+        inBuffer.limit(len);
+
+        // Check that the packet is an IPv6 packet
+        final int versionTcFlowLabel = inBuffer.getInt() & 0xffffffff;
+        if ((versionTcFlowLabel >> 28) != 6) {
+            return 0;
+        }
+
+        // Check that the payload length matches the packet length - 40.
+        int payloadLength = inBuffer.getShort();
+        if (payloadLength != len - IPV6_HEADER_SIZE) {
+            throw new IOException("Encountered packet with payload length mismatch");
+        }
+
+        // Implements rfc 6282 6lowpan header compression using iphc 0110 0000 0000 0000 (all
+        // fields are carried inline).
+        inBuffer.position(0);
+        inBuffer.put((byte) 0x60);
+        inBuffer.put((byte) 0x00);
+        final byte trafficClass = (byte) ((versionTcFlowLabel >> 20) & 0xff);
+        inBuffer.put(trafficClass);
+        final byte flowLabelMsb = (byte) ((versionTcFlowLabel >> 16) & 0x0f);
+        final short flowLabelLsb = (short) (versionTcFlowLabel & 0xffff);
+        inBuffer.put(flowLabelMsb);
+        // Note: the next putShort overrides the payload length. This is WAI as the payload length
+        // is reconstructed via L2CAP packet length.
+        inBuffer.putShort(flowLabelLsb);
+
+        // Since the iphc (2 bytes) matches the payload length that was elided (2 bytes), the length
+        // of the packet did not change.
+        return len;
+    }
+}
diff --git a/service/src/com/android/server/net/L2capNetwork.java b/service/src/com/android/server/net/L2capNetwork.java
index b9d5f13..b624bca 100644
--- a/service/src/com/android/server/net/L2capNetwork.java
+++ b/service/src/com/android/server/net/L2capNetwork.java
@@ -16,9 +16,12 @@
 
 package com.android.server.net;
 
+import static android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_6LOWPAN;
+
 import android.annotation.Nullable;
 import android.bluetooth.BluetoothSocket;
 import android.content.Context;
+import android.net.L2capNetworkSpecifier;
 import android.net.LinkProperties;
 import android.net.NetworkAgent;
 import android.net.NetworkAgentConfig;
@@ -39,10 +42,8 @@
     private static final NetworkScore NETWORK_SCORE = new NetworkScore.Builder().build();
     private final String mLogTag;
     private final Handler mHandler;
-    private final String mIfname;
     private final L2capPacketForwarder mForwarder;
     private final NetworkCapabilities mNetworkCapabilities;
-    private final L2capIpClient mIpClient;
     private final NetworkAgent mNetworkAgent;
 
     /** IpClient wrapper to handle IPv6 link-local provisioning for L2CAP tun.
@@ -56,7 +57,7 @@
         @Nullable
         private IpClientManager mIpClient;
         @Nullable
-        private LinkProperties mLinkProperties;
+        private volatile LinkProperties mLinkProperties;
 
         L2capIpClient(String logTag, Context context, String ifname) {
             mLogTag = logTag;
@@ -71,11 +72,24 @@
 
         @Override
         public void onProvisioningSuccess(LinkProperties lp) {
-            Log.d(mLogTag, "Successfully provisionined l2cap tun: " + lp);
+            Log.d(mLogTag, "Successfully provisioned l2cap tun: " + lp);
             mLinkProperties = lp;
             mOnProvisioningSuccessCv.open();
         }
 
+        @Override
+        public void onProvisioningFailure(LinkProperties lp) {
+            Log.i(mLogTag, "Failed to provision l2cap tun: " + lp);
+            mLinkProperties = null;
+            mOnProvisioningSuccessCv.open();
+        }
+
+        /**
+         * Starts IPv6 link-local provisioning.
+         *
+         * @return LinkProperties on success, null on failure.
+         */
+        @Nullable
         public LinkProperties start() {
             mOnIpClientCreatedCv.block();
             // mIpClient guaranteed non-null.
@@ -99,27 +113,27 @@
         void onNetworkUnwanted(L2capNetwork network);
     }
 
-    public L2capNetwork(Handler handler, Context context, NetworkProvider provider, String ifname,
-            BluetoothSocket socket, ParcelFileDescriptor tunFd,
-            NetworkCapabilities networkCapabilities, ICallback cb) {
-        // TODO: add a check that this constructor is invoked on the handler thread.
-        mLogTag = String.format("L2capNetwork[%s]", ifname);
+    public L2capNetwork(String logTag, Handler handler, Context context, NetworkProvider provider,
+            BluetoothSocket socket, ParcelFileDescriptor tunFd, NetworkCapabilities nc,
+            LinkProperties lp, ICallback cb) {
+        mLogTag = logTag;
         mHandler = handler;
-        mIfname = ifname;
-        mForwarder = new L2capPacketForwarder(handler, tunFd, socket, () -> {
+        mNetworkCapabilities = nc;
+
+        final L2capNetworkSpecifier spec = (L2capNetworkSpecifier) nc.getNetworkSpecifier();
+        final boolean compressHeaders = spec.getHeaderCompression() == HEADER_COMPRESSION_6LOWPAN;
+
+        mForwarder = new L2capPacketForwarder(handler, tunFd, socket, compressHeaders, () -> {
             // TODO: add a check that this callback is invoked on the handler thread.
             cb.onError(L2capNetwork.this);
         });
-        mNetworkCapabilities = networkCapabilities;
-        mIpClient = new L2capIpClient(mLogTag, context, ifname);
-        final LinkProperties linkProperties = mIpClient.start();
 
         final NetworkAgentConfig config = new NetworkAgentConfig.Builder().build();
         mNetworkAgent = new NetworkAgent(context, mHandler.getLooper(), mLogTag,
-                networkCapabilities, linkProperties, NETWORK_SCORE, config, provider) {
+                nc, lp, NETWORK_SCORE, config, provider) {
             @Override
             public void onNetworkUnwanted() {
-                Log.i(mLogTag, mIfname + ": Network is unwanted");
+                Log.i(mLogTag, "Network is unwanted");
                 // TODO: add a check that this callback is invoked on the handler thread.
                 cb.onNetworkUnwanted(L2capNetwork.this);
             }
@@ -128,6 +142,24 @@
         mNetworkAgent.markConnected();
     }
 
+    /** Create an L2capNetwork or return null on failure. */
+    @Nullable
+    public static L2capNetwork create(Handler handler, Context context, NetworkProvider provider,
+            String ifname, BluetoothSocket socket, ParcelFileDescriptor tunFd,
+            NetworkCapabilities nc, ICallback cb) {
+        // TODO: add a check that this function is invoked on the handler thread.
+        final String logTag = String.format("L2capNetwork[%s]", ifname);
+
+        // L2capIpClient#start() blocks until provisioning either succeeds (and returns
+        // LinkProperties) or fails (and returns null).
+        // Note that since L2capNetwork is using IPv6 link-local provisioning the most likely
+        // (only?) failure mode is due to the interface disappearing.
+        final LinkProperties lp = new L2capIpClient(logTag, context, ifname).start();
+        if (lp == null) return null;
+
+        return new L2capNetwork(logTag, handler, context, provider, socket, tunFd, nc, lp, cb);
+    }
+
     /** Get the NetworkCapabilities used for this Network */
     public NetworkCapabilities getNetworkCapabilities() {
         return mNetworkCapabilities;
diff --git a/service/src/com/android/server/net/L2capPacketForwarder.java b/service/src/com/android/server/net/L2capPacketForwarder.java
index cef351c..00faecf 100644
--- a/service/src/com/android/server/net/L2capPacketForwarder.java
+++ b/service/src/com/android/server/net/L2capPacketForwarder.java
@@ -16,6 +16,9 @@
 
 package com.android.server.net;
 
+import static com.android.server.net.HeaderCompressionUtils.compress6lowpan;
+import static com.android.server.net.HeaderCompressionUtils.decompress6lowpan;
+
 import android.bluetooth.BluetoothSocket;
 import android.os.Handler;
 import android.os.ParcelFileDescriptor;
@@ -29,6 +32,7 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.nio.BufferUnderflowException;
 
 /**
  * Forwards packets from a BluetoothSocket of type L2CAP to a tun fd and vice versa.
@@ -222,13 +226,18 @@
         private volatile boolean mIsRunning = true;
 
         private final String mLogTag;
-        private IReadWriteFd mReadFd;
-        private IReadWriteFd mWriteFd;
+        private final IReadWriteFd mReadFd;
+        private final IReadWriteFd mWriteFd;
+        private final boolean mIsIngress;
+        private final boolean mCompressHeaders;
 
-        L2capThread(String logTag, IReadWriteFd readFd, IReadWriteFd writeFd) {
-            mLogTag = logTag;
+        L2capThread(IReadWriteFd readFd, IReadWriteFd writeFd, boolean isIngress,
+                boolean compressHeaders) {
+            mLogTag = isIngress ? "L2capForwarderThread-Ingress" : "L2capForwarderThread-Egress";
             mReadFd = readFd;
             mWriteFd = writeFd;
+            mIsIngress = isIngress;
+            mCompressHeaders = compressHeaders;
         }
 
         private void postOnError() {
@@ -242,20 +251,28 @@
         public void run() {
             while (mIsRunning) {
                 try {
-                    final int readBytes = mReadFd.read(mBuffer, 0 /*off*/, mBuffer.length);
+                    int readBytes = mReadFd.read(mBuffer, 0 /*off*/, mBuffer.length);
                     // No bytes to write, continue.
                     if (readBytes <= 0) {
                         Log.w(mLogTag, "Zero-byte read encountered: " + readBytes);
                         continue;
                     }
 
-                    // If the packet exceeds MTU, drop it.
+                    if (mCompressHeaders) {
+                        if (mIsIngress) {
+                            readBytes = decompress6lowpan(mBuffer, readBytes);
+                        } else {
+                            readBytes = compress6lowpan(mBuffer, readBytes);
+                        }
+                    }
+
+                    // If the packet is 0-length post de/compression or exceeds MTU, drop it.
                     // Note that a large read on BluetoothSocket throws an IOException to tear down
                     // the network.
-                    if (readBytes > MTU) continue;
+                    if (readBytes <= 0 || readBytes > MTU) continue;
 
                     mWriteFd.write(mBuffer, 0 /*off*/, readBytes);
-                } catch (IOException e) {
+                } catch (IOException|BufferUnderflowException e) {
                     Log.e(mLogTag, "L2capThread exception", e);
                     // Tear down the network on any error.
                     mIsRunning = false;
@@ -273,19 +290,20 @@
     }
 
     public L2capPacketForwarder(Handler handler, ParcelFileDescriptor tunFd, BluetoothSocket socket,
-            ICallback cb) {
-        this(handler, new FdWrapper(tunFd), new BluetoothSocketWrapper(socket), cb);
+            boolean compressHdrs, ICallback cb) {
+        this(handler, new FdWrapper(tunFd), new BluetoothSocketWrapper(socket), compressHdrs, cb);
     }
 
     @VisibleForTesting
-    L2capPacketForwarder(Handler handler, IReadWriteFd tunFd, IReadWriteFd l2capFd, ICallback cb) {
+    L2capPacketForwarder(Handler handler, IReadWriteFd tunFd, IReadWriteFd l2capFd,
+            boolean compressHeaders, ICallback cb) {
         mHandler = handler;
         mTunFd = tunFd;
         mL2capFd = l2capFd;
         mCallback = cb;
 
-        mIngressThread = new L2capThread("L2capThread-Ingress", l2capFd, tunFd);
-        mEgressThread = new L2capThread("L2capThread-Egress", tunFd, l2capFd);
+        mIngressThread = new L2capThread(l2capFd, tunFd, true /*isIngress*/, compressHeaders);
+        mEgressThread = new L2capThread(tunFd, l2capFd, false /*isIngress*/, compressHeaders);
 
         mIngressThread.start();
         mEgressThread.start();
diff --git a/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java b/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
index 0d96fc4..2420e7a 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
@@ -497,4 +497,33 @@
             return false;
         }
     }
+
+    /**
+     * Sends a netlink request to set MTU for given interface
+     *
+     * @param interfaceName The name of the network interface to query.
+     * @param mtu MTU value to set for the interface.
+     * @return true if the request finished successfully, otherwise false.
+     */
+    public static boolean setInterfaceMtu(@NonNull String interfaceName, int mtu) {
+        if (mtu < 68) {
+            Log.e(TAG, "Invalid mtu: " + mtu + ", mtu should be greater than 68 referring RFC791");
+            return false;
+        }
+        final RtNetlinkLinkMessage ntMsg =
+                RtNetlinkLinkMessage.createSetMtuMessage(interfaceName, /*seqNo*/ 0, mtu);
+        if (ntMsg == null) {
+            Log.e(TAG, "Failed to create message to set MTU to " + mtu
+                    + "for interface " + interfaceName);
+            return false;
+        }
+        final byte[] msg = ntMsg.pack(ByteOrder.nativeOrder());
+        try {
+            NetlinkUtils.sendOneShotKernelMessage(NETLINK_ROUTE, msg);
+            return true;
+        } catch (ErrnoException e) {
+            Log.e(TAG, "Failed to set MTU to " + mtu + " for: " + interfaceName, e);
+            return false;
+        }
+    }
 }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
index f17a7ec..c19a124 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
@@ -364,6 +364,37 @@
                 DEFAULT_MTU, /*hardwareAddress*/ null, /*interfaceName*/ null);
     }
 
+    /**
+     * Creates an {@link RtNetlinkLinkMessage} instance that can be used to set the MTU of a
+     * network interface.
+     *
+     * @param interfaceName The name of the network interface to query.
+     * @param sequenceNumber The sequence number for the Netlink message.
+     * @param mtu MTU value to set for the interface.
+     * @return An `RtNetlinkLinkMessage` instance representing the request to query the interface.
+     */
+    @Nullable
+    public static RtNetlinkLinkMessage createSetMtuMessage(@NonNull String interfaceName,
+            int sequenceNumber, int mtu) {
+        return createSetMtuMessage(
+            interfaceName, sequenceNumber, mtu, new OsAccess());
+    }
+
+    @VisibleForTesting
+    @Nullable
+    protected static RtNetlinkLinkMessage createSetMtuMessage(@NonNull String interfaceName,
+            int sequenceNumber, int mtu, @NonNull OsAccess osAccess) {
+        final int interfaceIndex = osAccess.if_nametoindex(interfaceName);
+        if (interfaceIndex == OsAccess.INVALID_INTERFACE_INDEX) {
+            return null;
+        }
+        return RtNetlinkLinkMessage.build(
+            new StructNlMsgHdr(/*payloadLen*/ 0, RTM_NEWLINK, NLM_F_REQUEST_ACK , sequenceNumber),
+            new StructIfinfoMsg((short) AF_UNSPEC, /*type*/ 0, interfaceIndex,
+                /*flags*/ 0, /*change*/ 0),
+            mtu, /*hardwareAddress*/ null, /*interfaceName*/ null);
+    }
+
     @Override
     public String toString() {
         return "RtNetlinkLinkMessage{ "
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 026e985..8d7ae5c 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -23,6 +23,7 @@
 import java.net.Inet6Address;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.util.List;
 
 /**
  * Network constants used by the network stack.
@@ -341,6 +342,26 @@
      */
     public static final String TEST_URL_EXPIRATION_TIME = "test_url_expiration_time";
 
+    /**
+     * List of IpPrefix that are local network prefixes.
+     */
+    public static final List<IpPrefix> IPV4_LOCAL_PREFIXES = List.of(
+            new IpPrefix("169.254.0.0/16"), // Link Local
+            new IpPrefix("100.64.0.0/10"),  // CGNAT
+            new IpPrefix("10.0.0.0/8"),     // RFC1918
+            new IpPrefix("172.16.0.0/12"),  // RFC1918
+            new IpPrefix("192.168.0.0/16")  // RFC1918
+    );
+
+    /**
+     * List of IpPrefix that are multicast and broadcast prefixes.
+     */
+    public static final List<IpPrefix> MULTICAST_AND_BROADCAST_PREFIXES = List.of(
+            new IpPrefix("224.0.0.0/4"),               // Multicast
+            new IpPrefix("ff00::/8"),                  // Multicast
+            new IpPrefix("255.255.255.255/32")         // Broadcast
+    );
+
     // TODO: Move to Inet4AddressUtils
     // See aosp/1455936: NetworkStackConstants can't depend on it as it causes jarjar-related issues
     // for users of both the net-utils-device-common and net-utils-framework-common libraries.
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
index b29fc73..13710b1 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
@@ -328,6 +328,28 @@
     }
 
     @Test
+    public void testCreateSetInterfaceMtuMessage() {
+        final String expectedHexBytes =
+                "280000001000050068240000000000000000000008000000"   // struct nlmsghdr
+                        + "000000000000000008000400DC050000"; // struct ifinfomsg
+        final String interfaceName = "wlan0";
+        final int interfaceIndex = 8;
+        final int sequenceNumber = 0x2468;
+        final int mtu = 1500;
+
+        when(mOsAccess.if_nametoindex(interfaceName)).thenReturn(interfaceIndex);
+
+        final RtNetlinkLinkMessage msg = RtNetlinkLinkMessage.createSetMtuMessage(
+                interfaceName,
+                sequenceNumber,
+                mtu,
+                mOsAccess);
+        assertNotNull(msg);
+        final byte[] bytes = msg.pack(ByteOrder.LITTLE_ENDIAN);  // For testing.
+        assertEquals(expectedHexBytes, HexDump.toHexString(bytes));
+    }
+
+    @Test
     public void testToString() {
         final ByteBuffer byteBuffer = toByteBuffer(RTM_NEWLINK_HEX);
         byteBuffer.order(ByteOrder.LITTLE_ENDIAN);  // For testing.
diff --git a/staticlibs/testutils/host/python/tether_utils.py b/staticlibs/testutils/host/python/tether_utils.py
index c63de1f..710f8a8 100644
--- a/staticlibs/testutils/host/python/tether_utils.py
+++ b/staticlibs/testutils/host/python/tether_utils.py
@@ -95,7 +95,9 @@
   hotspot_interface = server.startHotspot(test_ssid, test_passphrase)
 
   # Make the client connects to the hotspot.
-  client_network = client.connectToWifi(test_ssid, test_passphrase)
+  client_network = client.connectToWifi(
+      test_ssid, test_passphrase, upstream_type != UpstreamType.NONE
+  )
 
   return hotspot_interface, client_network
 
diff --git a/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
index 6da7e9a..252052e 100644
--- a/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
+++ b/tests/cts/multidevices/snippet/ConnectivityMultiDevicesSnippet.kt
@@ -27,13 +27,11 @@
 import android.net.NetworkRequest
 import android.net.cts.util.CtsNetUtils
 import android.net.cts.util.CtsTetheringUtils
-import android.net.wifi.ScanResult
 import android.net.wifi.SoftApConfiguration
 import android.net.wifi.SoftApConfiguration.SECURITY_TYPE_WPA2_PSK
 import android.net.wifi.WifiConfiguration
 import android.net.wifi.WifiInfo
 import android.net.wifi.WifiManager
-import android.net.wifi.WifiNetworkSpecifier
 import android.net.wifi.WifiSsid
 import androidx.test.platform.app.InstrumentationRegistry
 import com.android.compatibility.common.util.PropertyUtil
@@ -109,10 +107,7 @@
     // Suppress warning because WifiManager methods to connect to a config are
     // documented not to be deprecated for privileged users.
     @Suppress("DEPRECATION")
-    fun connectToWifi(ssid: String, passphrase: String): Long {
-        val specifier = WifiNetworkSpecifier.Builder()
-            .setBand(ScanResult.WIFI_BAND_24_GHZ)
-            .build()
+    fun connectToWifi(ssid: String, passphrase: String, requireValidation: Boolean): Long {
         val wifiConfig = WifiConfiguration()
         wifiConfig.SSID = "\"" + ssid + "\""
         wifiConfig.preSharedKey = "\"" + passphrase + "\""
@@ -141,7 +136,8 @@
             return@runAsShell networkCallback.eventuallyExpect<CapabilitiesChanged> {
                 // Remove double quotes.
                 val ssidFromCaps = (WifiInfo::sanitizeSsid)(it.caps.ssid)
-                ssidFromCaps == ssid && it.caps.hasCapability(NET_CAPABILITY_VALIDATED)
+                ssidFromCaps == ssid && (!requireValidation ||
+                        it.caps.hasCapability(NET_CAPABILITY_VALIDATED))
             }.network.networkHandle
         }
     }
diff --git a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
index 9379697..8e790ca 100644
--- a/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
+++ b/tests/cts/net/src/android/net/cts/ApfIntegrationTest.kt
@@ -52,8 +52,8 @@
 import android.os.Handler
 import android.os.HandlerThread
 import android.os.PowerManager
-import android.os.UserManager
 import android.os.SystemProperties
+import android.os.UserManager
 import android.platform.test.annotations.AppModeFull
 import android.provider.DeviceConfig
 import android.provider.DeviceConfig.NAMESPACE_CONNECTIVITY
@@ -489,15 +489,15 @@
 
     fun ApfV4GeneratorBase<*>.addPassIfNotIcmpv6EchoReply() {
         // If not IPv6 -> PASS
-        addLoad16(R0, ETH_ETHERTYPE_OFFSET)
+        addLoad16intoR0(ETH_ETHERTYPE_OFFSET)
         addJumpIfR0NotEquals(ETH_P_IPV6.toLong(), BaseApfGenerator.PASS_LABEL)
 
         // If not ICMPv6 -> PASS
-        addLoad8(R0, IPV6_NEXT_HEADER_OFFSET)
+        addLoad8intoR0(IPV6_NEXT_HEADER_OFFSET)
         addJumpIfR0NotEquals(IPPROTO_ICMPV6.toLong(), BaseApfGenerator.PASS_LABEL)
 
         // If not echo reply -> PASS
-        addLoad8(R0, ICMP6_TYPE_OFFSET)
+        addLoad8intoR0(ICMP6_TYPE_OFFSET)
         addJumpIfR0NotEquals(0x81, BaseApfGenerator.PASS_LABEL)
     }
 
@@ -744,11 +744,11 @@
         //     transmit 3 ICMPv6 echo requests with random first byte
         //     increase DROPPED_IPV6_NS_REPLIED_NON_DAD counter
         //     drop
-        gen.addLoad16(R0, ETH_ETHERTYPE_OFFSET)
+        gen.addLoad16intoR0(ETH_ETHERTYPE_OFFSET)
                 .addJumpIfR0NotEquals(ETH_P_IPV6.toLong(), skipPacketLabel)
-                .addLoad8(R0, IPV6_NEXT_HEADER_OFFSET)
+                .addLoad8intoR0(IPV6_NEXT_HEADER_OFFSET)
                 .addJumpIfR0NotEquals(IPPROTO_ICMPV6.toLong(), skipPacketLabel)
-                .addLoad8(R0, ICMP6_TYPE_OFFSET)
+                .addLoad8intoR0(ICMP6_TYPE_OFFSET)
                 .addJumpIfR0NotEquals(ICMP6_ECHO_REPLY.toLong(), skipPacketLabel)
                 .addLoadFromMemory(R0, MemorySlot.PACKET_SIZE)
                 .addCountAndPassIfR0Equals(
diff --git a/tests/cts/net/src/android/net/cts/IpSecManagerTest.java b/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
index e94d94f..4a21f09 100644
--- a/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
+++ b/tests/cts/net/src/android/net/cts/IpSecManagerTest.java
@@ -375,6 +375,7 @@
     }
 
     private static boolean isIpv6UdpEncapSupportedByKernel() {
+        if (SdkLevel.isAtLeastB() && isKernelVersionAtLeast("5.10.0")) return true;
         return isKernelVersionAtLeast("5.15.31")
                 || (isKernelVersionAtLeast("5.10.108") && !isKernelVersionAtLeast("5.15.0"));
     }
@@ -390,8 +391,8 @@
         assumeTrue("Not supported by kernel", isIpv6UdpEncapSupportedByKernel());
     }
 
-    // TODO: b/319532485 Figure out whether to support x86_32
     private static boolean isRequestTransformStateSupportedByKernel() {
+        if (SdkLevel.isAtLeastB()) return true;
         return NetworkUtils.isKernel64Bit() || !NetworkUtils.isKernelX86();
     }
 
diff --git a/tests/cts/net/src/android/net/cts/NetworkReservationTest.kt b/tests/cts/net/src/android/net/cts/NetworkReservationTest.kt
index f05bf15..a9af34f 100644
--- a/tests/cts/net/src/android/net/cts/NetworkReservationTest.kt
+++ b/tests/cts/net/src/android/net/cts/NetworkReservationTest.kt
@@ -16,15 +16,21 @@
 
 package android.net.cts
 
+import android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS
 import android.Manifest.permission.MANAGE_TEST_NETWORKS
 import android.Manifest.permission.NETWORK_SETTINGS
 import android.net.ConnectivityManager
+import android.net.L2capNetworkSpecifier
+import android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_6LOWPAN
+import android.net.L2capNetworkSpecifier.ROLE_SERVER
 import android.net.NetworkCapabilities
 import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED
 import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
 import android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED
 import android.net.NetworkCapabilities.RES_ID_MATCH_ALL_RESERVATIONS
+import android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH
 import android.net.NetworkCapabilities.TRANSPORT_ETHERNET
 import android.net.NetworkCapabilities.TRANSPORT_TEST
 import android.net.NetworkProvider
@@ -43,7 +49,10 @@
 import com.android.testutils.TestableNetworkCallback
 import com.android.testutils.TestableNetworkOfferCallback
 import com.android.testutils.runAsShell
+import kotlin.test.assertContains
 import kotlin.test.assertEquals
+import kotlin.test.assertNull
+import kotlin.test.assertTrue
 import org.junit.After
 import org.junit.Before
 import org.junit.Test
@@ -83,6 +92,8 @@
     private val handler = Handler(handlerThread.looper)
     private val provider = NetworkProvider(context, handlerThread.looper, TAG)
 
+    private val registeredCallbacks = ArrayList<TestableNetworkCallback>()
+
     @Before
     fun setUp() {
         runAsShell(NETWORK_SETTINGS) {
@@ -92,6 +103,7 @@
 
     @After
     fun tearDown() {
+        registeredCallbacks.forEach { cm.unregisterNetworkCallback(it) }
         runAsShell(NETWORK_SETTINGS) {
             // unregisterNetworkProvider unregisters all associated NetworkOffers.
             cm.unregisterNetworkProvider(provider)
@@ -104,6 +116,13 @@
         it.reservationId = resId
     }
 
+    fun reserveNetwork(nr: NetworkRequest): TestableNetworkCallback {
+        return TestableNetworkCallback().also {
+            cm.reserveNetwork(nr, handler, it)
+            registeredCallbacks.add(it)
+        }
+    }
+
     @Test
     fun testReserveNetwork() {
         // register blanket offer
@@ -112,8 +131,7 @@
             provider.registerNetworkOffer(NETWORK_SCORE, BLANKET_CAPS, handler::post, blanketOffer)
         }
 
-        val cb = TestableNetworkCallback()
-        cm.reserveNetwork(ETHERNET_REQUEST, handler, cb)
+        val cb = reserveNetwork(ETHERNET_REQUEST)
 
         // validate the reservation matches the blanket offer.
         val reservationReq = blanketOffer.expectOnNetworkNeeded(BLANKET_CAPS).request
@@ -137,4 +155,28 @@
         provider.unregisterNetworkOffer(reservedOffer)
         cb.expect<Unavailable>()
     }
+
+    @Test
+    fun testReserveL2capNetwork() {
+        val l2capReservationSpecifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .setHeaderCompression(HEADER_COMPRESSION_6LOWPAN)
+                .build()
+        val l2capRequest = NetworkRequest.Builder()
+                .addTransportType(TRANSPORT_BLUETOOTH)
+                .removeCapability(NET_CAPABILITY_TRUSTED)
+                .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
+                .setNetworkSpecifier(l2capReservationSpecifier)
+                .build()
+        val cb = runAsShell(CONNECTIVITY_USE_RESTRICTED_NETWORKS) {
+            reserveNetwork(l2capRequest)
+        }
+
+        val caps = cb.expect<Reserved>().caps
+        val reservedSpec = caps.networkSpecifier
+        assertTrue(reservedSpec is L2capNetworkSpecifier)
+        assertContains(0x80..0xFF, reservedSpec.psm, "PSM is outside of dynamic range")
+        assertEquals(HEADER_COMPRESSION_6LOWPAN, reservedSpec.headerCompression)
+        assertNull(reservedSpec.remoteAddress)
+    }
 }
diff --git a/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt b/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
index 375d604..437eb81 100644
--- a/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
+++ b/tests/integration/src/com/android/server/net/integrationtests/ConnectivityServiceIntegrationTest.kt
@@ -55,12 +55,14 @@
 import com.android.networkstack.apishim.TelephonyManagerShimImpl
 import com.android.server.BpfNetMaps
 import com.android.server.ConnectivityService
+import com.android.server.L2capNetworkProvider
 import com.android.server.NetworkAgentWrapper
 import com.android.server.TestNetIdManager
 import com.android.server.connectivity.CarrierPrivilegeAuthenticator
 import com.android.server.connectivity.ConnectivityResources
 import com.android.server.connectivity.MockableSystemProperties
 import com.android.server.connectivity.MultinetworkPolicyTracker
+import com.android.server.connectivity.PermissionMonitor
 import com.android.server.connectivity.ProxyTracker
 import com.android.server.connectivity.SatelliteAccessController
 import com.android.testutils.DevSdkIgnoreRunner
@@ -221,7 +223,7 @@
     }
 
     private inner class TestConnectivityService(deps: Dependencies) : ConnectivityService(
-            context, dnsResolver, log, netd, deps)
+            context, dnsResolver, log, netd, deps, PermissionMonitorDependencies())
 
     private inner class TestDependencies : ConnectivityService.Dependencies() {
         override fun getNetworkStack() = networkStackClient
@@ -272,6 +274,12 @@
             connectivityServiceInternalHandler: Handler
         ): SatelliteAccessController? = mock(
             SatelliteAccessController::class.java)
+
+        override fun makeL2capNetworkProvider(context: Context) = null
+    }
+
+    private inner class PermissionMonitorDependencies : PermissionMonitor.Dependencies() {
+        override fun shouldEnforceLocalNetRestrictions(uid: Int) = false
     }
 
     @After
diff --git a/tests/unit/java/com/android/server/BpfNetMapsTest.java b/tests/unit/java/com/android/server/BpfNetMapsTest.java
index 73eb24d..fd92672 100644
--- a/tests/unit/java/com/android/server/BpfNetMapsTest.java
+++ b/tests/unit/java/com/android/server/BpfNetMapsTest.java
@@ -269,9 +269,11 @@
     public void testAddLocalNetAccessAfterVWithIncorrectInterface() throws Exception {
         assertTrue(mLocalNetAccessMap.isEmpty());
 
+        // wlan2 is an incorrect interface
         mBpfNetMaps.addLocalNetAccess(160, "wlan2",
                 Inet4Address.getByName("196.68.0.0"), 0, 0, true);
 
+        // As we tried to add incorrect interface, it would be skipped and map should be empty.
         assertTrue(mLocalNetAccessMap.isEmpty());
     }
 
@@ -302,6 +304,53 @@
 
     @Test
     @IgnoreAfter(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    public void testRemoveLocalNetAccessBeforeV() {
+        assertThrows(UnsupportedOperationException.class, () ->
+                mBpfNetMaps.removeLocalNetAccess(0, TEST_IF_NAME, Inet6Address.ANY, 0, 0));
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    public void testRemoveLocalNetAccessAfterV() throws Exception {
+        assertTrue(mLocalNetAccessMap.isEmpty());
+
+        mBpfNetMaps.addLocalNetAccess(160, TEST_IF_NAME,
+                Inet4Address.getByName("196.68.0.0"), 0, 0, true);
+
+        assertNotNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("196.68.0.0"), 0, 0)));
+        assertNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("100.68.0.0"), 0, 0)));
+
+        mBpfNetMaps.removeLocalNetAccess(160, TEST_IF_NAME,
+                Inet4Address.getByName("196.68.0.0"), 0, 0);
+        assertNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("196.68.0.0"), 0, 0)));
+        assertNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("100.68.0.0"), 0, 0)));
+    }
+
+    @Test
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    public void testRemoveLocalNetAccessAfterVWithIncorrectInterface() throws Exception {
+        assertTrue(mLocalNetAccessMap.isEmpty());
+
+        mBpfNetMaps.addLocalNetAccess(160, TEST_IF_NAME,
+                Inet4Address.getByName("196.68.0.0"), 0, 0, true);
+
+        assertNotNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("196.68.0.0"), 0, 0)));
+        assertNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("100.68.0.0"), 0, 0)));
+
+        mBpfNetMaps.removeLocalNetAccess(160, "wlan2",
+                Inet4Address.getByName("196.68.0.0"), 0, 0);
+        assertNotNull(mLocalNetAccessMap.getValue(new LocalNetAccessKey(160, TEST_IF_INDEX,
+                Inet4Address.getByName("196.68.0.0"), 0, 0)));
+    }
+
+    @Test
+    @IgnoreAfter(Build.VERSION_CODES.VANILLA_ICE_CREAM)
     public void testAddUidToLocalNetBlockMapBeforeV() {
         assertThrows(UnsupportedOperationException.class, () ->
                 mBpfNetMaps.addUidToLocalNetBlockMap(0));
@@ -309,9 +358,9 @@
 
     @Test
     @IgnoreAfter(Build.VERSION_CODES.VANILLA_ICE_CREAM)
-    public void testIsUidPresentInLocalNetBlockMapBeforeV() {
+    public void testIsUidBlockedFromUsingLocalNetworkBeforeV() {
         assertThrows(UnsupportedOperationException.class, () ->
-                mBpfNetMaps.getUidValueFromLocalNetBlockMap(0));
+                mBpfNetMaps.isUidBlockedFromUsingLocalNetwork(0));
     }
 
     @Test
@@ -339,18 +388,18 @@
 
     @Test
     @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
-    public void testIsUidPresentInLocalNetBlockMapAfterV() throws Exception {
+    public void testIsUidBlockedFromUsingLocalNetworkAfterV() throws Exception {
         final int uid0 = TEST_UIDS[0];
         final int uid1 = TEST_UIDS[1];
 
         assertTrue(mLocalNetAccessMap.isEmpty());
 
         mLocalNetBlockedUidMap.updateEntry(new U32(uid0), new Bool(true));
-        assertTrue(mBpfNetMaps.getUidValueFromLocalNetBlockMap(uid0));
-        assertFalse(mBpfNetMaps.getUidValueFromLocalNetBlockMap(uid1));
+        assertTrue(mBpfNetMaps.isUidBlockedFromUsingLocalNetwork(uid0));
+        assertFalse(mBpfNetMaps.isUidBlockedFromUsingLocalNetwork(uid1));
 
         mLocalNetBlockedUidMap.updateEntry(new U32(uid1), new Bool(true));
-        assertTrue(mBpfNetMaps.getUidValueFromLocalNetBlockMap(uid1));
+        assertTrue(mBpfNetMaps.isUidBlockedFromUsingLocalNetwork(uid1));
     }
 
     @Test
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index f7d7c87..b7aa387 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -154,6 +154,7 @@
 import static android.net.Proxy.PROXY_CHANGE_ACTION;
 import static android.net.RouteInfo.RTN_UNREACHABLE;
 import static android.net.connectivity.ConnectivityCompatChanges.NETWORK_BLOCKED_WITHOUT_INTERNET_PERMISSION;
+import static android.net.connectivity.ConnectivityCompatChanges.RESTRICT_LOCAL_NETWORK;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.PREFIX_OPERATION_ADDED;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.PREFIX_OPERATION_REMOVED;
 import static android.net.resolv.aidl.IDnsResolverUnsolicitedEventListener.VALIDATION_RESULT_FAILURE;
@@ -257,6 +258,7 @@
 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.admin.DevicePolicyManager;
+import android.app.compat.CompatChanges;
 import android.app.usage.NetworkStatsManager;
 import android.compat.testing.PlatformCompatChangeRule;
 import android.content.BroadcastReceiver;
@@ -412,6 +414,7 @@
 import com.android.server.ConnectivityService.NetworkRequestInfo;
 import com.android.server.ConnectivityServiceTest.ConnectivityServiceDependencies.DestroySocketsWrapper;
 import com.android.server.ConnectivityServiceTest.ConnectivityServiceDependencies.ReportedInterfaces;
+import com.android.server.L2capNetworkProvider;
 import com.android.server.connectivity.ApplicationSelfCertifiedNetworkCapabilities;
 import com.android.server.connectivity.AutomaticOnOffKeepaliveTracker;
 import com.android.server.connectivity.CarrierPrivilegeAuthenticator;
@@ -425,6 +428,7 @@
 import com.android.server.connectivity.NetworkAgentInfo;
 import com.android.server.connectivity.NetworkNotificationManager;
 import com.android.server.connectivity.NetworkNotificationManager.NotificationType;
+import com.android.server.connectivity.PermissionMonitor;
 import com.android.server.connectivity.ProxyTracker;
 import com.android.server.connectivity.QosCallbackTracker;
 import com.android.server.connectivity.SatelliteAccessController;
@@ -593,6 +597,7 @@
     private MockContext mServiceContext;
     private HandlerThread mCsHandlerThread;
     private ConnectivityServiceDependencies mDeps;
+    private PermissionMonitorDependencies mPermDeps;
     private AutomaticOnOffKeepaliveTrackerDependencies mAutoOnOffKeepaliveDependencies;
     private ConnectivityService mService;
     private WrappedConnectivityManager mCm;
@@ -1920,6 +1925,7 @@
         doReturn(mResources).when(mockResContext).getResources();
         ConnectivityResources.setResourcesContextForTest(mockResContext);
         mDeps = new ConnectivityServiceDependencies(mockResContext);
+        mPermDeps = new PermissionMonitorDependencies();
         doReturn(true).when(mMockKeepaliveTrackerDependencies)
                 .isAddressTranslationEnabled(mServiceContext);
         doReturn(new ConnectivityResources(mockResContext)).when(mMockKeepaliveTrackerDependencies)
@@ -1932,7 +1938,7 @@
                 mMockDnsResolver,
                 mock(IpConnectivityLog.class),
                 mMockNetd,
-                mDeps);
+                mDeps, mPermDeps);
         mService.mLingerDelayMs = TEST_LINGER_DELAY_MS;
         mService.mNascentDelayMs = TEST_NASCENT_DELAY_MS;
 
@@ -2381,6 +2387,18 @@
             // Needed to mock out the dependency on DeviceConfig
             return 15;
         }
+
+        @Override
+        public L2capNetworkProvider makeL2capNetworkProvider(Context context) {
+            return null;
+        }
+    }
+
+    static class PermissionMonitorDependencies extends PermissionMonitor.Dependencies {
+        @Override
+        public boolean shouldEnforceLocalNetRestrictions(int uid) {
+            return false;
+        }
     }
 
     private class AutomaticOnOffKeepaliveTrackerDependencies
diff --git a/tests/unit/java/com/android/server/L2capNetworkProviderTest.kt b/tests/unit/java/com/android/server/L2capNetworkProviderTest.kt
deleted file mode 100644
index 49eb476..0000000
--- a/tests/unit/java/com/android/server/L2capNetworkProviderTest.kt
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Copyright (C) 2024 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.server
-
-import android.bluetooth.BluetoothAdapter
-import android.bluetooth.BluetoothManager
-import android.bluetooth.BluetoothServerSocket
-import android.content.Context
-import android.content.pm.PackageManager
-import android.content.pm.PackageManager.FEATURE_BLUETOOTH_LE
-import android.net.ConnectivityManager
-import android.net.ConnectivityManager.TYPE_NONE
-import android.net.L2capNetworkSpecifier
-import android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_6LOWPAN
-import android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_NONE
-import android.net.L2capNetworkSpecifier.ROLE_SERVER
-import android.net.NetworkCapabilities
-import android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH
-import android.net.NetworkProvider
-import android.net.NetworkProvider.NetworkOfferCallback
-import android.net.NetworkRequest
-import android.os.Build
-import android.os.Handler
-import android.os.HandlerThread
-import com.android.testutils.DevSdkIgnoreRule
-import com.android.testutils.DevSdkIgnoreRunner
-import com.android.testutils.waitForIdle
-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.ArgumentMatchers.any
-import org.mockito.ArgumentMatchers.eq
-import org.mockito.Mock
-import org.mockito.Mockito.any
-import org.mockito.Mockito.clearInvocations
-import org.mockito.Mockito.doReturn
-import org.mockito.Mockito.never
-import org.mockito.Mockito.times
-import org.mockito.Mockito.verify
-import org.mockito.MockitoAnnotations
-
-private const val TAG = "L2capNetworkProviderTest"
-private const val TIMEOUT_MS = 1000
-
-private val RESERVATION_CAPS = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-    .addTransportType(TRANSPORT_BLUETOOTH)
-    .build()
-
-private val RESERVATION = NetworkRequest(
-        NetworkCapabilities(RESERVATION_CAPS),
-        TYPE_NONE,
-        42 /* rId */,
-        NetworkRequest.Type.RESERVATION
-)
-
-@RunWith(DevSdkIgnoreRunner::class)
-@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
-class L2capNetworkProviderTest {
-    @Mock private lateinit var context: Context
-    @Mock private lateinit var deps: L2capNetworkProvider.Dependencies
-    @Mock private lateinit var provider: NetworkProvider
-    @Mock private lateinit var cm: ConnectivityManager
-    @Mock private lateinit var pm: PackageManager
-    @Mock private lateinit var bm: BluetoothManager
-    @Mock private lateinit var adapter: BluetoothAdapter
-    @Mock private lateinit var serverSocket: BluetoothServerSocket
-
-    private val handlerThread = HandlerThread("$TAG handler thread").apply { start() }
-    private val handler = Handler(handlerThread.looper)
-
-    @Before
-    fun setUp() {
-        MockitoAnnotations.initMocks(this)
-        doReturn(provider).`when`(deps).getNetworkProvider(any(), any())
-        doReturn(handlerThread).`when`(deps).getHandlerThread()
-        doReturn(cm).`when`(context).getSystemService(eq(ConnectivityManager::class.java))
-        doReturn(pm).`when`(context).getPackageManager()
-        doReturn(true).`when`(pm).hasSystemFeature(FEATURE_BLUETOOTH_LE)
-
-        doReturn(bm).`when`(context).getSystemService(eq(BluetoothManager::class.java))
-        doReturn(adapter).`when`(bm).getAdapter()
-        doReturn(serverSocket).`when`(adapter).listenUsingInsecureL2capChannel()
-        doReturn(0x80).`when`(serverSocket).getPsm()
-    }
-
-    @After
-    fun tearDown() {
-        handlerThread.quitSafely()
-        handlerThread.join()
-    }
-
-    @Test
-    fun testNetworkProvider_registeredWhenSupported() {
-        L2capNetworkProvider(deps, context).start()
-        handlerThread.waitForIdle(TIMEOUT_MS)
-        verify(cm).registerNetworkProvider(eq(provider))
-        verify(provider).registerNetworkOffer(any(), any(), any(), any())
-    }
-
-    @Test
-    fun testNetworkProvider_notRegisteredWhenNotSupported() {
-        doReturn(false).`when`(pm).hasSystemFeature(FEATURE_BLUETOOTH_LE)
-        L2capNetworkProvider(deps, context).start()
-        handlerThread.waitForIdle(TIMEOUT_MS)
-        verify(cm, never()).registerNetworkProvider(eq(provider))
-    }
-
-    fun doTestBlanketOfferIgnoresRequest(request: NetworkRequest) {
-        clearInvocations(provider)
-        L2capNetworkProvider(deps, context).start()
-        handlerThread.waitForIdle(TIMEOUT_MS)
-
-        val blanketOfferCaptor = ArgumentCaptor.forClass(NetworkOfferCallback::class.java)
-        verify(provider).registerNetworkOffer(any(), any(), any(), blanketOfferCaptor.capture())
-
-        blanketOfferCaptor.value.onNetworkNeeded(request)
-        verify(provider).registerNetworkOffer(any(), any(), any(), any())
-    }
-
-    fun doTestBlanketOfferCreatesReservation(
-            request: NetworkRequest,
-            reservation: NetworkCapabilities
-    ) {
-        clearInvocations(provider)
-        L2capNetworkProvider(deps, context).start()
-        handlerThread.waitForIdle(TIMEOUT_MS)
-
-        val blanketOfferCaptor = ArgumentCaptor.forClass(NetworkOfferCallback::class.java)
-        verify(provider).registerNetworkOffer(any(), any(), any(), blanketOfferCaptor.capture())
-
-        blanketOfferCaptor.value.onNetworkNeeded(request)
-
-        val capsCaptor = ArgumentCaptor.forClass(NetworkCapabilities::class.java)
-        verify(provider, times(2)).registerNetworkOffer(any(), capsCaptor.capture(), any(), any())
-
-        assertTrue(reservation.satisfiedByNetworkCapabilities(capsCaptor.value))
-    }
-
-    @Test
-    fun testBlanketOffer_reservationWithoutSpecifier() {
-        val caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .build()
-        val nr = NetworkRequest(caps, TYPE_NONE, 42 /* rId */, NetworkRequest.Type.RESERVATION)
-
-        doTestBlanketOfferIgnoresRequest(nr)
-    }
-
-    @Test
-    fun testBlanketOffer_reservationWithCorrectSpecifier() {
-        var specifier = L2capNetworkSpecifier.Builder()
-                .setRole(ROLE_SERVER)
-                .setHeaderCompression(HEADER_COMPRESSION_6LOWPAN)
-                .build()
-        var caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        var nr = NetworkRequest(caps, TYPE_NONE, 42 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferCreatesReservation(nr, caps)
-
-        specifier = L2capNetworkSpecifier.Builder()
-                .setRole(ROLE_SERVER)
-                .setHeaderCompression(HEADER_COMPRESSION_NONE)
-                .build()
-        caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        nr = NetworkRequest(caps, TYPE_NONE, 43 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferCreatesReservation(nr, caps)
-    }
-
-    @Test
-    fun testBlanketOffer_reservationWithIncorrectSpecifier() {
-        var specifier = L2capNetworkSpecifier.Builder().build()
-        var caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        var nr = NetworkRequest(caps, TYPE_NONE, 42 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferIgnoresRequest(nr)
-
-        specifier = L2capNetworkSpecifier.Builder()
-                .setRole(ROLE_SERVER)
-                .build()
-        caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        nr = NetworkRequest(caps, TYPE_NONE, 44 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferIgnoresRequest(nr)
-
-        specifier = L2capNetworkSpecifier.Builder()
-                .setRole(ROLE_SERVER)
-                .setHeaderCompression(HEADER_COMPRESSION_NONE)
-                .setPsm(0x81)
-                .build()
-        caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        nr = NetworkRequest(caps, TYPE_NONE, 45 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferIgnoresRequest(nr)
-
-        specifier = L2capNetworkSpecifier.Builder()
-                .setHeaderCompression(HEADER_COMPRESSION_NONE)
-                .build()
-        caps = NetworkCapabilities.Builder.withoutDefaultCapabilities()
-                .addTransportType(TRANSPORT_BLUETOOTH)
-                .setNetworkSpecifier(specifier)
-                .build()
-        nr = NetworkRequest(caps, TYPE_NONE, 47 /* rId */, NetworkRequest.Type.RESERVATION)
-        doTestBlanketOfferIgnoresRequest(nr)
-    }
-}
diff --git a/tests/unit/java/com/android/server/connectivity/NetworkPermissionsTest.kt b/tests/unit/java/com/android/server/connectivity/NetworkPermissionsTest.kt
new file mode 100644
index 0000000..8a9d288
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivity/NetworkPermissionsTest.kt
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2025 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 android.net.INetd
+import android.os.Build
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import kotlin.test.assertEquals
+import kotlin.test.assertFalse
+import org.junit.Test
+import org.junit.runner.RunWith
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.TIRAMISU)
+class NetworkPermissionsTest {
+    @Test
+    fun test_networkTrafficPerms_correctValues() {
+        assertEquals(NetworkPermissions.PERMISSION_NONE, INetd.PERMISSION_NONE) /* 0 */
+        assertEquals(NetworkPermissions.PERMISSION_NETWORK, INetd.PERMISSION_NETWORK) /* 1 */
+        assertEquals(NetworkPermissions.PERMISSION_SYSTEM, INetd.PERMISSION_SYSTEM) /* 2 */
+        assertEquals(NetworkPermissions.TRAFFIC_PERMISSION_INTERNET, 4)
+        assertEquals(NetworkPermissions.TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS, 8)
+        assertEquals(NetworkPermissions.TRAFFIC_PERMISSION_UNINSTALLED, -1)
+        assertEquals(NetworkPermissions.TRAFFIC_PERMISSION_SDKSANDBOX_LOCALHOST, 16)
+    }
+
+    @Test
+    fun test_noOverridesInFlags() {
+        val permsList = listOf(
+            NetworkPermissions.PERMISSION_NONE,
+            NetworkPermissions.PERMISSION_NETWORK,
+            NetworkPermissions.PERMISSION_SYSTEM,
+            NetworkPermissions.TRAFFIC_PERMISSION_INTERNET,
+            NetworkPermissions.TRAFFIC_PERMISSION_UPDATE_DEVICE_STATS,
+            NetworkPermissions.TRAFFIC_PERMISSION_SDKSANDBOX_LOCALHOST,
+            NetworkPermissions.TRAFFIC_PERMISSION_UNINSTALLED
+        )
+        assertFalse(hasDuplicates(permsList))
+    }
+
+    fun hasDuplicates(list: List<Int>): Boolean {
+        return list.distinct().size != list.size
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivity/PermissionMonitorTest.java b/tests/unit/java/com/android/server/connectivity/PermissionMonitorTest.java
index 55c68b7..ec9c6b0 100644
--- a/tests/unit/java/com/android/server/connectivity/PermissionMonitorTest.java
+++ b/tests/unit/java/com/android/server/connectivity/PermissionMonitorTest.java
@@ -21,6 +21,7 @@
 import static android.Manifest.permission.CONNECTIVITY_INTERNAL;
 import static android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS;
 import static android.Manifest.permission.INTERNET;
+import static android.Manifest.permission.NEARBY_WIFI_DEVICES;
 import static android.Manifest.permission.NETWORK_STACK;
 import static android.Manifest.permission.OBSERVE_GRANT_REVOKE_PERMISSIONS;
 import static android.Manifest.permission.UPDATE_DEVICE_STATS;
@@ -31,6 +32,7 @@
 import static android.content.pm.PackageInfo.REQUESTED_PERMISSION_REQUIRED;
 import static android.content.pm.PackageManager.GET_PERMISSIONS;
 import static android.content.pm.PackageManager.MATCH_ANY_USER;
+import static android.content.pm.PackageManager.PERMISSION_DENIED;
 import static android.net.ConnectivitySettingsManager.UIDS_ALLOWED_ON_RESTRICTED_NETWORKS;
 import static android.net.INetd.PERMISSION_INTERNET;
 import static android.net.INetd.PERMISSION_NETWORK;
@@ -39,16 +41,20 @@
 import static android.net.INetd.PERMISSION_UNINSTALLED;
 import static android.net.INetd.PERMISSION_UPDATE_DEVICE_STATS;
 import static android.net.NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK;
+import static android.net.connectivity.ConnectivityCompatChanges.RESTRICT_LOCAL_NETWORK;
 import static android.os.Process.SYSTEM_UID;
+import static android.permission.PermissionManager.PERMISSION_GRANTED;
 
 import static com.android.server.connectivity.PermissionMonitor.isHigherNetworkPermission;
 import static com.android.testutils.TestPermissionUtil.runAsShell;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
 
 import static junit.framework.Assert.fail;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
+import static org.junit.Assume.assumeTrue;
 import static org.mockito.AdditionalMatchers.aryEq;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyBoolean;
@@ -68,6 +74,8 @@
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
+import android.compat.testing.PlatformCompatChangeRule;
+import android.content.AttributionSource;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -85,7 +93,9 @@
 import android.os.SystemConfigManager;
 import android.os.UserHandle;
 import android.os.UserManager;
+import android.permission.PermissionManager;
 import android.provider.Settings;
+import android.util.ArraySet;
 import android.util.SparseIntArray;
 
 import androidx.annotation.NonNull;
@@ -102,9 +112,13 @@
 import com.android.testutils.DevSdkIgnoreRunner;
 import com.android.testutils.HandlerUtils;
 
+import libcore.junit.util.compat.CoreCompatChangeRule.EnableCompatChanges;
+
 import org.junit.After;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.TestRule;
 import org.junit.runner.RunWith;
 import org.mockito.AdditionalAnswers;
 import org.mockito.ArgumentCaptor;
@@ -121,6 +135,8 @@
 @SmallTest
 @DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
 public class PermissionMonitorTest {
+    @Rule
+    public TestRule compatChangeRule = new PlatformCompatChangeRule();
     private static final int MOCK_USER_ID1 = 0;
     private static final int MOCK_USER_ID2 = 1;
     private static final int MOCK_USER_ID3 = 2;
@@ -162,9 +178,14 @@
     private static final int PERMISSION_TRAFFIC_ALL =
             PERMISSION_INTERNET | PERMISSION_UPDATE_DEVICE_STATS;
     private static final int TIMEOUT_MS = 2_000;
+    // The ACCESS_LOCAL_NETWORK permission is not available yet. For the time being, use
+    // NEARBY_WIFI_DEVICES as a means to develop, for expediency.
+    // TODO(b/375236298): remove this constant when the ACCESS_LOCAL_NETWORK permission is defined.
+    private static final String ACCESS_LOCAL_NETWORK = NEARBY_WIFI_DEVICES;
 
     @Mock private Context mContext;
     @Mock private PackageManager mPackageManager;
+    @Mock private PermissionManager mPermissionManager;
     @Mock private INetd mNetdService;
     @Mock private UserManager mUserManager;
     @Mock private PermissionMonitor.Dependencies mDeps;
@@ -183,6 +204,7 @@
         when(mContext.getPackageManager()).thenReturn(mPackageManager);
         when(mContext.getSystemService(eq(Context.USER_SERVICE))).thenReturn(mUserManager);
         doReturn(List.of(MOCK_USER1)).when(mUserManager).getUserHandles(eq(true));
+        when(mContext.getSystemService(PermissionManager.class)).thenReturn(mPermissionManager);
         when(mContext.getSystemServiceName(SystemConfigManager.class))
                 .thenReturn(Context.SYSTEM_CONFIG_SERVICE);
         when(mContext.getSystemService(Context.SYSTEM_CONFIG_SERVICE))
@@ -295,19 +317,28 @@
         return result;
     }
 
-    private void buildAndMockPackageInfoWithPermissions(String packageName, int uid,
+    private PackageInfo buildAndMockPackageInfoWithPermissions(String packageName, int uid,
             String... permissions) throws Exception {
         final PackageInfo packageInfo = buildPackageInfo(packageName, uid, permissions);
         // This will return the wrong UID for the package when queried with other users.
         doReturn(packageInfo).when(mPackageManager)
                 .getPackageInfo(eq(packageName), anyInt() /* flag */);
+        if (BpfNetMaps.isAtLeast25Q2()) {
+            // Runtime permission checks for local net restrictions were introduced in 25Q2
+            for (String permission : permissions) {
+                doReturn(PERMISSION_GRANTED).when(mPermissionManager).checkPermissionForPreflight(
+                        eq(permission),
+                        argThat(attributionSource -> attributionSource.getUid() == uid));
+            }
+        }
         final String[] oldPackages = mPackageManager.getPackagesForUid(uid);
         // If it's duplicated package, no need to set it again.
-        if (CollectionUtils.contains(oldPackages, packageName)) return;
+        if (CollectionUtils.contains(oldPackages, packageName)) return packageInfo;
 
         // Combine the package if this uid is shared with other packages.
         final String[] newPackages = appendElement(String.class, oldPackages, packageName);
         doReturn(newPackages).when(mPackageManager).getPackagesForUid(eq(uid));
+        return packageInfo;
     }
 
     private void startMonitoring() {
@@ -342,7 +373,7 @@
 
     private void addPackage(String packageName, int uid, String... permissions) throws Exception {
         buildAndMockPackageInfoWithPermissions(packageName, uid, permissions);
-        processOnHandlerThread(() -> mPermissionMonitor.onPackageAdded(packageName, uid));
+        onPackageAdded(packageName, uid);
     }
 
     private void removePackage(String packageName, int uid) {
@@ -354,7 +385,12 @@
         final String[] newPackages = Arrays.stream(oldPackages).filter(e -> !e.equals(packageName))
                 .toArray(String[]::new);
         doReturn(newPackages).when(mPackageManager).getPackagesForUid(eq(uid));
-        processOnHandlerThread(() -> mPermissionMonitor.onPackageRemoved(packageName, uid));
+        if (BpfNetMaps.isAtLeast25Q2()){
+            // Runtime permission checks for local net restrictions were introduced in 25Q2
+            doReturn(PERMISSION_DENIED).when(mPermissionManager).checkPermissionForPreflight(
+                    anyString(), argThat(as -> as.getUid() == uid));
+        }
+        onPackageRemoved(packageName, uid);
     }
 
     @Test
@@ -585,6 +621,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testHasUseBackgroundNetworksPermission() throws Exception {
         assertFalse(mPermissionMonitor.hasUseBackgroundNetworksPermission(SYSTEM_UID));
         assertBackgroundPermission(false, SYSTEM_PACKAGE1, SYSTEM_UID);
@@ -606,6 +643,7 @@
 
     private class BpfMapMonitor {
         private final SparseIntArray mAppIdsTrafficPermission = new SparseIntArray();
+        private final ArraySet<Integer> mLocalNetBlockedUids = new ArraySet<>();
         private static final int DOES_NOT_EXIST = -2;
 
         BpfMapMonitor(BpfNetMaps mockBpfmap) throws Exception {
@@ -618,6 +656,18 @@
                 }
                 return null;
             }).when(mockBpfmap).setNetPermForUids(anyInt(), any(int[].class));
+            doAnswer((InvocationOnMock invocation) -> {
+                final Object[] args = invocation.getArguments();
+                final int uid = (int) args[0];
+                mLocalNetBlockedUids.add(uid);
+                return null;
+            }).when(mockBpfmap).addUidToLocalNetBlockMap(anyInt());
+            doAnswer((InvocationOnMock invocation) -> {
+                final Object[] args = invocation.getArguments();
+                final int uid = (int) args[0];
+                mLocalNetBlockedUids.remove(uid);
+                return null;
+            }).when(mockBpfmap).removeUidFromLocalNetBlockMap(anyInt());
         }
 
         public void expectTrafficPerm(int permission, Integer... appIds) {
@@ -642,6 +692,18 @@
                 }
             }
         }
+
+        public boolean hasLocalNetPermissions(int uid) {
+            return !mLocalNetBlockedUids.contains(uid);
+        }
+
+        public boolean isUidPresentInLocalNetBlockMap(int uid) {
+            return mLocalNetBlockedUids.contains(uid);
+        }
+
+        public boolean hasBlockedLocalNetForSandboxUid(int sandboxUid) {
+            return mLocalNetBlockedUids.contains(sandboxUid);
+        }
     }
 
     private class NetdMonitor {
@@ -725,6 +787,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUserAndPackageAddRemove() throws Exception {
         // MOCK_UID11: MOCK_PACKAGE1 only has network permission.
         // SYSTEM_APP_UID11: SYSTEM_PACKAGE1 has system permission.
@@ -814,6 +877,48 @@
                 MOCK_APPID1);
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_onUserAdded() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        final PackageInfo packageInfo = buildAndMockPackageInfoWithPermissions(
+                MOCK_PACKAGE1, MOCK_UID11, CHANGE_NETWORK_STATE);
+        // Set package for all users on devices
+        doReturn(List.of(packageInfo)).when(mPackageManager)
+                .getInstalledPackagesAsUser(anyInt(), eq(MOCK_USER1.getIdentifier()));
+        onUserAdded(MOCK_USER1);
+
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+        if (hasSdkSandbox(MOCK_UID11)) {
+            assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                    mProcessShim.toSdkSandboxUid(MOCK_UID11)));
+        }
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_onUserRemoved() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        final PackageInfo packageInfo = buildAndMockPackageInfoWithPermissions(
+                MOCK_PACKAGE1, MOCK_UID11, CHANGE_NETWORK_STATE);
+        // Set package for all users on devices
+        doReturn(List.of(packageInfo)).when(mPackageManager)
+                .getInstalledPackagesAsUser(anyInt(), eq(MOCK_USER1.getIdentifier()));
+        onUserAdded(MOCK_USER1);
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+
+        onUserRemoved(MOCK_USER1);
+        assertFalse(mBpfMapMonitor.isUidPresentInLocalNetBlockMap(MOCK_UID11));
+    }
+
     private void doTestUidFilteringDuringVpnConnectDisconnectAndUidUpdates(@Nullable String ifName)
             throws Exception {
         doReturn(List.of(
@@ -860,11 +965,13 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidFilteringDuringVpnConnectDisconnectAndUidUpdates() throws Exception {
         doTestUidFilteringDuringVpnConnectDisconnectAndUidUpdates("tun0");
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidFilteringDuringVpnConnectDisconnectAndUidUpdatesWithWildcard()
             throws Exception {
         doTestUidFilteringDuringVpnConnectDisconnectAndUidUpdates(null /* ifName */);
@@ -897,16 +1004,19 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidFilteringDuringPackageInstallAndUninstall() throws Exception {
         doTestUidFilteringDuringPackageInstallAndUninstall("tun0");
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidFilteringDuringPackageInstallAndUninstallWithWildcard() throws Exception {
         doTestUidFilteringDuringPackageInstallAndUninstall(null /* ifName */);
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testLockdownUidFilteringWithLockdownEnableDisable() {
         doReturn(List.of(
                 buildPackageInfo(SYSTEM_PACKAGE1, SYSTEM_APP_UID11, CHANGE_NETWORK_STATE,
@@ -938,6 +1048,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testLockdownUidFilteringWithLockdownEnableDisableWithMultiAdd() {
         doReturn(List.of(
                 buildPackageInfo(SYSTEM_PACKAGE1, SYSTEM_APP_UID11, CHANGE_NETWORK_STATE,
@@ -979,6 +1090,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testLockdownUidFilteringWithLockdownEnableDisableWithMultiAddAndOverlap() {
         doReturn(List.of(buildPackageInfo(SYSTEM_PACKAGE1, SYSTEM_APP_UID11, CHANGE_NETWORK_STATE,
                         CONNECTIVITY_USE_RESTRICTED_NETWORKS),
@@ -1039,6 +1151,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testLockdownUidFilteringWithLockdownEnableDisableWithDuplicates() {
         doReturn(List.of(
                 buildPackageInfo(SYSTEM_PACKAGE1, SYSTEM_APP_UID11, CHANGE_NETWORK_STATE,
@@ -1073,6 +1186,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testLockdownUidFilteringWithInstallAndUnInstall() {
         doReturn(List.of(
                 buildPackageInfo(SYSTEM_PACKAGE1, SYSTEM_APP_UID11, CHANGE_NETWORK_STATE,
@@ -1109,15 +1223,13 @@
     // called multiple times with the uid corresponding to each user.
     private void addPackageForUsers(UserHandle[] users, String packageName, int appId) {
         for (final UserHandle user : users) {
-            processOnHandlerThread(() ->
-                    mPermissionMonitor.onPackageAdded(packageName, user.getUid(appId)));
+            onPackageAdded(packageName, user.getUid(appId));
         }
     }
 
     private void removePackageForUsers(UserHandle[] users, String packageName, int appId) {
         for (final UserHandle user : users) {
-            processOnHandlerThread(() ->
-                    mPermissionMonitor.onPackageRemoved(packageName, user.getUid(appId)));
+            onPackageRemoved(packageName, user.getUid(appId));
         }
     }
 
@@ -1165,6 +1277,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageInstall() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET, UPDATE_DEVICE_STATS);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_TRAFFIC_ALL, MOCK_APPID1);
@@ -1173,7 +1286,25 @@
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_INTERNET, MOCK_APPID2);
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_onPackageInstall() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET);
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+
+        addPackage(MOCK_PACKAGE2, MOCK_UID12, ACCESS_LOCAL_NETWORK);
+        assertTrue(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID12));
+        if (hasSdkSandbox(MOCK_UID12)) assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                mProcessShim.toSdkSandboxUid(MOCK_UID12)));
+    }
+
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageInstallSharedUid() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET, UPDATE_DEVICE_STATS);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_TRAFFIC_ALL, MOCK_APPID1);
@@ -1185,6 +1316,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageUninstallBasic() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET, UPDATE_DEVICE_STATS);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_TRAFFIC_ALL, MOCK_APPID1);
@@ -1194,7 +1326,24 @@
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_UNINSTALLED, MOCK_APPID1);
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_onPackageUninstall() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        addPackage(MOCK_PACKAGE1, MOCK_UID11, ACCESS_LOCAL_NETWORK);
+        assertTrue(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+
+        when(mPackageManager.getPackagesForUid(MOCK_UID11)).thenReturn(new String[]{});
+        onPackageRemoved(MOCK_PACKAGE1, MOCK_UID11);
+        assertFalse(mBpfMapMonitor.isUidPresentInLocalNetBlockMap(MOCK_UID11));
+    }
+
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageRemoveThenAdd() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET, UPDATE_DEVICE_STATS);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_TRAFFIC_ALL, MOCK_APPID1);
@@ -1207,7 +1356,30 @@
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_INTERNET, MOCK_APPID1);
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_onPackageRemoveThenAdd() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        addPackage(MOCK_PACKAGE1, MOCK_UID11, ACCESS_LOCAL_NETWORK);
+        assertTrue(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+        if (hasSdkSandbox(MOCK_UID12)) assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                mProcessShim.toSdkSandboxUid(MOCK_UID11)));
+
+        removePackage(MOCK_PACKAGE1, MOCK_UID11);
+        assertFalse(mBpfMapMonitor.isUidPresentInLocalNetBlockMap(MOCK_UID11));
+
+        addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET);
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+        if (hasSdkSandbox(MOCK_UID12)) assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                mProcessShim.toSdkSandboxUid(MOCK_UID11)));
+    }
+
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageUpdate() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_NONE, MOCK_APPID1);
@@ -1217,6 +1389,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testPackageUninstallWithMultiplePackages() throws Exception {
         addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET, UPDATE_DEVICE_STATS);
         mBpfMapMonitor.expectTrafficPerm(PERMISSION_TRAFFIC_ALL, MOCK_APPID1);
@@ -1248,6 +1421,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUpdateUidPermissionsFromSystemConfig() throws Exception {
         when(mSystemConfigManager.getSystemPermissionUids(eq(INTERNET)))
                 .thenReturn(new int[]{ MOCK_UID11, MOCK_UID12 });
@@ -1287,6 +1461,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testIntentReceiver() throws Exception {
         startMonitoring();
         final BroadcastReceiver receiver = expectBroadcastReceiver(
@@ -1325,6 +1500,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidsAllowedOnRestrictedNetworksChanged() throws Exception {
         startMonitoring();
         final ContentObserver contentObserver = expectRegisterContentObserver(
@@ -1357,6 +1533,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidsAllowedOnRestrictedNetworksChangedWithSharedUid() throws Exception {
         startMonitoring();
         final ContentObserver contentObserver = expectRegisterContentObserver(
@@ -1390,6 +1567,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testUidsAllowedOnRestrictedNetworksChangedWithMultipleUsers() throws Exception {
         startMonitoring();
         final ContentObserver contentObserver = expectRegisterContentObserver(
@@ -1444,6 +1622,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testOnExternalApplicationsAvailable() throws Exception {
         // Initial the permission state. MOCK_PACKAGE1 and MOCK_PACKAGE2 are installed on external
         // and have different uids. There has no permission for both uids.
@@ -1475,6 +1654,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testOnExternalApplicationsAvailable_AppsNotRegisteredOnStartMonitoring()
             throws Exception {
         startMonitoring();
@@ -1502,6 +1682,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testOnExternalApplicationsAvailableWithSharedUid()
             throws Exception {
         // Initial the permission state. MOCK_PACKAGE1 and MOCK_PACKAGE2 are installed on external
@@ -1528,6 +1709,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testOnExternalApplicationsAvailableWithSharedUid_DifferentStorage()
             throws Exception {
         // Initial the permission state. MOCK_PACKAGE1 is installed on external storage and
@@ -1570,6 +1752,38 @@
         assertFalse(isHigherNetworkPermission(PERMISSION_SYSTEM, PERMISSION_SYSTEM));
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
+    public void testLocalNetRestrictions_setPermChanges() throws Exception {
+        assumeTrue(BpfNetMaps.isAtLeast25Q2());
+        doReturn(true).when(mDeps).shouldEnforceLocalNetRestrictions(anyInt());
+        when(mPermissionManager.checkPermissionForPreflight(
+                anyString(), any(AttributionSource.class))).thenReturn(PERMISSION_DENIED);
+        addPackage(MOCK_PACKAGE1, MOCK_UID11, INTERNET);
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+
+        // Mock permission grant
+        when(mPermissionManager.checkPermissionForPreflight(
+                eq(ACCESS_LOCAL_NETWORK),
+                argThat(attributionSource -> attributionSource.getUid() == MOCK_UID11)))
+                .thenReturn(PERMISSION_GRANTED);
+        mPermissionMonitor.setLocalNetworkPermissions(MOCK_UID11, null);
+        assertTrue(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+        if (hasSdkSandbox(MOCK_UID12)) assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                mProcessShim.toSdkSandboxUid(MOCK_UID11)));
+
+        // Mock permission denied
+        when(mPermissionManager.checkPermissionForPreflight(
+                eq(ACCESS_LOCAL_NETWORK),
+                argThat(attributionSource -> attributionSource.getUid() == MOCK_UID11)))
+                .thenReturn(PERMISSION_DENIED);
+        mPermissionMonitor.setLocalNetworkPermissions(MOCK_UID11, null);
+        assertFalse(mBpfMapMonitor.hasLocalNetPermissions(MOCK_UID11));
+        if (hasSdkSandbox(MOCK_UID12)) assertTrue(mBpfMapMonitor.hasBlockedLocalNetForSandboxUid(
+                mProcessShim.toSdkSandboxUid(MOCK_UID11)));
+    }
+
     private void prepareMultiUserPackages() {
         // MOCK_USER1 has installed 3 packages
         // mockApp1 has no permission and share MOCK_APPID1.
@@ -1602,7 +1816,7 @@
 
     private void addUserAndVerifyAppIdsPermissions(UserHandle user, int appId1Perm,
             int appId2Perm, int appId3Perm) {
-        processOnHandlerThread(() -> mPermissionMonitor.onUserAdded(user));
+        onUserAdded(user);
         mBpfMapMonitor.expectTrafficPerm(appId1Perm, MOCK_APPID1);
         mBpfMapMonitor.expectTrafficPerm(appId2Perm, MOCK_APPID2);
         mBpfMapMonitor.expectTrafficPerm(appId3Perm, MOCK_APPID3);
@@ -1610,13 +1824,14 @@
 
     private void removeUserAndVerifyAppIdsPermissions(UserHandle user, int appId1Perm,
             int appId2Perm, int appId3Perm) {
-        processOnHandlerThread(() -> mPermissionMonitor.onUserRemoved(user));
+        onUserRemoved(user);
         mBpfMapMonitor.expectTrafficPerm(appId1Perm, MOCK_APPID1);
         mBpfMapMonitor.expectTrafficPerm(appId2Perm, MOCK_APPID2);
         mBpfMapMonitor.expectTrafficPerm(appId3Perm, MOCK_APPID3);
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testAppIdsTrafficPermission_UserAddedRemoved() {
         prepareMultiUserPackages();
 
@@ -1650,6 +1865,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testAppIdsTrafficPermission_Multiuser_PackageAdded() throws Exception {
         // Add two users with empty package list.
         onUserAdded(MOCK_USER1);
@@ -1720,6 +1936,7 @@
     }
 
     @Test
+    @EnableCompatChanges(RESTRICT_LOCAL_NETWORK)
     public void testAppIdsTrafficPermission_Multiuser_PackageRemoved() throws Exception {
         // Add two users with empty package list.
         onUserAdded(MOCK_USER1);
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
index ba62114..e6e6ecc 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsAdvertiserTest.kt
@@ -92,6 +92,13 @@
     network = TEST_NETWORK_1
 }
 
+private val GOOGLECAST_SERVICE = NsdServiceInfo("TestServiceName", "_googlecast._tcp").apply {
+    subtypes = setOf(TEST_SUBTYPE)
+    port = 12345
+    hostAddresses = listOf(TEST_ADDR)
+    network = TEST_NETWORK_1
+}
+
 private val SERVICE_1_SUBTYPE = NsdServiceInfo("TestServiceName", "_advertisertest._tcp").apply {
     subtypes = setOf(TEST_SUBTYPE)
     port = 12345
@@ -143,6 +150,15 @@
     OffloadEngine.OFFLOAD_TYPE_REPLY.toLong()
 )
 
+private val OFFLOAD_SERVICE_INFO_GOOGLECAST = OffloadServiceInfo(
+    OffloadServiceInfo.Key("TestServiceName", "_googlecast._tcp"),
+    listOf(),
+    "Android_test.local",
+    TEST_OFFLOAD_PACKET1,
+    Int.MAX_VALUE,
+    OffloadEngine.OFFLOAD_TYPE_REPLY.toLong()
+)
+
 private val OFFLOAD_SERVICEINFO_NO_SUBTYPE = OffloadServiceInfo(
     OffloadServiceInfo.Key("TestServiceName", "_advertisertest._tcp"),
     listOf(),
@@ -189,11 +205,25 @@
     fun setUp() {
         thread.start()
         doReturn(TEST_HOSTNAME).`when`(mockDeps).generateHostname(anyBoolean())
-        doReturn(mockInterfaceAdvertiser1).`when`(mockDeps).makeAdvertiser(eq(mockSocket1),
-                any(), any(), any(), any(), any(), any(), any()
+        doReturn(mockInterfaceAdvertiser1).`when`(mockDeps).makeAdvertiser(
+            eq(mockSocket1),
+            any(),
+            any(),
+            any(),
+            any(),
+            any(),
+            any(),
+            any()
         )
-        doReturn(mockInterfaceAdvertiser2).`when`(mockDeps).makeAdvertiser(eq(mockSocket2),
-                any(), any(), any(), any(), any(), any(), any()
+        doReturn(mockInterfaceAdvertiser2).`when`(mockDeps).makeAdvertiser(
+            eq(mockSocket2),
+            any(),
+            any(),
+            any(),
+            any(),
+            any(),
+            any(),
+            any()
         )
         doReturn(true).`when`(mockInterfaceAdvertiser1).isProbing(anyInt())
         doReturn(true).`when`(mockInterfaceAdvertiser2).isProbing(anyInt())
@@ -202,16 +232,21 @@
         doReturn(TEST_INTERFACE1).`when`(mockInterfaceAdvertiser1).socketInterfaceName
         doReturn(TEST_INTERFACE2).`when`(mockInterfaceAdvertiser2).socketInterfaceName
         doReturn(TEST_OFFLOAD_PACKET1).`when`(mockInterfaceAdvertiser1).getRawOffloadPayload(
-            SERVICE_ID_1)
+            SERVICE_ID_1
+        )
         doReturn(TEST_OFFLOAD_PACKET1).`when`(mockInterfaceAdvertiser1).getRawOffloadPayload(
-            SERVICE_ID_2)
+            SERVICE_ID_2
+        )
         doReturn(TEST_OFFLOAD_PACKET1).`when`(mockInterfaceAdvertiser1).getRawOffloadPayload(
-            SERVICE_ID_3)
+            SERVICE_ID_3
+        )
         doReturn(TEST_OFFLOAD_PACKET1).`when`(mockInterfaceAdvertiser2).getRawOffloadPayload(
-            SERVICE_ID_1)
+            SERVICE_ID_1
+        )
         doReturn(resources).`when`(context).getResources()
         doReturn(SERVICES_PRIORITY_LIST).`when`(resources).getStringArray(
-            R.array.config_nsdOffloadServicesPriority)
+            R.array.config_nsdOffloadServicesPriority
+        )
         ConnectivityResources.setResourcesContextForTest(context)
     }
 
@@ -232,8 +267,12 @@
     fun testAddService_OneNetwork() {
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            SERVICE_1,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
         verify(socketProvider).requestSocket(eq(TEST_NETWORK_1), socketCbCaptor.capture())
@@ -255,7 +294,9 @@
 
         doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
         postSync { intAdvCbCaptor.value.onServiceProbingSucceeded(
-                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+            mockInterfaceAdvertiser1,
+            SERVICE_ID_1
+        ) }
         verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_1), argThat { it.matches(SERVICE_1) })
         verify(cb).onOffloadStartOrUpdate(eq(TEST_INTERFACE1), eq(OFFLOAD_SERVICEINFO_NO_SUBTYPE))
 
@@ -296,12 +337,18 @@
     fun testAddService_AllNetworksWithSubType() {
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, ALL_NETWORKS_SERVICE_SUBTYPE,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            ALL_NETWORKS_SERVICE_SUBTYPE,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
-        verify(socketProvider).requestSocket(eq(ALL_NETWORKS_SERVICE_SUBTYPE.network),
-                socketCbCaptor.capture())
+        verify(socketProvider).requestSocket(
+            eq(ALL_NETWORKS_SERVICE_SUBTYPE.network),
+            socketCbCaptor.capture()
+        )
 
         val socketCb = socketCbCaptor.value
         postSync { socketCb.onSocketCreated(TEST_SOCKETKEY_1, mockSocket1, listOf(TEST_LINKADDR)) }
@@ -309,30 +356,56 @@
 
         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(), eq(TEST_HOSTNAME), any(), any()
+        verify(mockDeps).makeAdvertiser(
+            eq(mockSocket1),
+            eq(listOf(TEST_LINKADDR)),
+            eq(thread.looper),
+            any(),
+            intAdvCbCaptor1.capture(),
+            eq(TEST_HOSTNAME),
+            any(),
+            any()
         )
-        verify(mockDeps).makeAdvertiser(eq(mockSocket2), eq(listOf(TEST_LINKADDR)),
-                eq(thread.looper), any(), intAdvCbCaptor2.capture(), eq(TEST_HOSTNAME), any(), any()
+        verify(mockDeps).makeAdvertiser(
+            eq(mockSocket2),
+            eq(listOf(TEST_LINKADDR)),
+            eq(thread.looper),
+            any(),
+            intAdvCbCaptor2.capture(),
+            eq(TEST_HOSTNAME),
+            any(),
+            any()
         )
         verify(mockInterfaceAdvertiser1).addService(
-                anyInt(), eq(ALL_NETWORKS_SERVICE_SUBTYPE), any())
+            anyInt(),
+            eq(ALL_NETWORKS_SERVICE_SUBTYPE),
+            any()
+        )
         verify(mockInterfaceAdvertiser2).addService(
-                anyInt(), eq(ALL_NETWORKS_SERVICE_SUBTYPE), any())
+            anyInt(),
+            eq(ALL_NETWORKS_SERVICE_SUBTYPE),
+            any()
+        )
 
         doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
         postSync { intAdvCbCaptor1.value.onServiceProbingSucceeded(
-                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+            mockInterfaceAdvertiser1,
+            SERVICE_ID_1
+        ) }
         verify(cb).onOffloadStartOrUpdate(eq(TEST_INTERFACE1), eq(OFFLOAD_SERVICEINFO))
 
         // 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.onServiceProbingSucceeded(
-                mockInterfaceAdvertiser2, SERVICE_ID_1) }
+            mockInterfaceAdvertiser2,
+            SERVICE_ID_1
+        ) }
         verify(cb).onOffloadStartOrUpdate(eq(TEST_INTERFACE2), eq(OFFLOAD_SERVICEINFO))
-        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_1),
-                argThat { it.matches(ALL_NETWORKS_SERVICE_SUBTYPE) })
+        verify(cb).onRegisterServiceSucceeded(
+            eq(SERVICE_ID_1),
+            argThat { it.matches(ALL_NETWORKS_SERVICE_SUBTYPE) }
+        )
 
         // Services are conflicted.
         postSync {
@@ -378,19 +451,30 @@
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
         postSync {
-            advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1, DEFAULT_ADVERTISING_OPTION,
-                    TEST_CLIENT_UID_1)
-            advertiser.addOrUpdateService(SERVICE_ID_2,
+            advertiser.addOrUpdateService(
+                SERVICE_ID_1,
+                SERVICE_1,
+                DEFAULT_ADVERTISING_OPTION,
+                TEST_CLIENT_UID_1
+            )
+            advertiser.addOrUpdateService(
+                SERVICE_ID_2,
                 NsdServiceInfo("TestService2", "_PRIORITYTEST._udp").apply {
                     port = 12345
                     hostAddresses = listOf(TEST_ADDR)
-                }, DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1)
+                },
+                DEFAULT_ADVERTISING_OPTION,
+                TEST_CLIENT_UID_1
+            )
             advertiser.addOrUpdateService(
                 SERVICE_ID_3,
                 NsdServiceInfo("TestService3", "_notprioritized._tcp").apply {
                     port = 12345
                     hostAddresses = listOf(TEST_ADDR)
-                }, DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1)
+                },
+                DEFAULT_ADVERTISING_OPTION,
+                TEST_CLIENT_UID_1
+            )
         }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
@@ -400,8 +484,15 @@
         postSync { socketCb.onSocketCreated(TEST_SOCKETKEY_1, mockSocket1, listOf(TEST_LINKADDR)) }
 
         val intAdvCbCaptor1 = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
-        verify(mockDeps).makeAdvertiser(eq(mockSocket1), eq(listOf(TEST_LINKADDR)),
-            eq(thread.looper), any(), intAdvCbCaptor1.capture(), eq(TEST_HOSTNAME), any(), any()
+        verify(mockDeps).makeAdvertiser(
+            eq(mockSocket1),
+            eq(listOf(TEST_LINKADDR)),
+            eq(thread.looper),
+            any(),
+            intAdvCbCaptor1.capture(),
+            eq(TEST_HOSTNAME),
+            any(),
+            any()
         )
 
         doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
@@ -433,30 +524,88 @@
     }
 
     @Test
+    fun testAddService_NoSubtypeForGoogleCastOffload() {
+        val advertiser =
+            MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
+        postSync {
+            advertiser.addOrUpdateService(
+                SERVICE_ID_1,
+                GOOGLECAST_SERVICE,
+                DEFAULT_ADVERTISING_OPTION,
+                TEST_CLIENT_UID_1
+            )
+        }
+        val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
+        verify(socketProvider).requestSocket(eq(SERVICE_1.network), socketCbCaptor.capture())
+
+        val socketCb = socketCbCaptor.value
+        postSync { socketCb.onSocketCreated(TEST_SOCKETKEY_1, mockSocket1, listOf(TEST_LINKADDR)) }
+
+        val intAdvCbCaptor1 = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
+        verify(mockDeps).makeAdvertiser(
+            eq(mockSocket1),
+            eq(listOf(TEST_LINKADDR)),
+            eq(thread.looper),
+            any(),
+            intAdvCbCaptor1.capture(),
+            eq(TEST_HOSTNAME),
+            any(),
+            any()
+        )
+
+        doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
+        postSync {
+            intAdvCbCaptor1.value.onServiceProbingSucceeded(mockInterfaceAdvertiser1, SERVICE_ID_1)
+        }
+
+        verify(cb).onOffloadStartOrUpdate(eq(TEST_INTERFACE1), eq(OFFLOAD_SERVICE_INFO_GOOGLECAST))
+    }
+
+    @Test
     fun testAddService_Conflicts() {
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            SERVICE_1,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_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.addOrUpdateService(SERVICE_ID_2, ALL_NETWORKS_SERVICE,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_2,
+            ALL_NETWORKS_SERVICE,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
         val allNetSocketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
         verify(socketProvider).requestSocket(eq(null), allNetSocketCbCaptor.capture())
         val allNetSocketCb = allNetSocketCbCaptor.value
 
-        postSync { advertiser.addOrUpdateService(LONG_SERVICE_ID_1, LONG_SERVICE_1,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
-        postSync { advertiser.addOrUpdateService(LONG_SERVICE_ID_2, LONG_ALL_NETWORKS_SERVICE,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            LONG_SERVICE_ID_1,
+            LONG_SERVICE_1,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
+        postSync { advertiser.addOrUpdateService(
+            LONG_SERVICE_ID_2,
+            LONG_ALL_NETWORKS_SERVICE,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
-        postSync { advertiser.addOrUpdateService(CASE_INSENSITIVE_TEST_SERVICE_ID,
-                ALL_NETWORKS_SERVICE_2, DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            CASE_INSENSITIVE_TEST_SERVICE_ID,
+            ALL_NETWORKS_SERVICE_2,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
         // Callbacks for matching network and all networks both get the socket
         postSync {
@@ -465,7 +614,9 @@
         }
 
         val expectedRenamed = NsdServiceInfo(
-                "${ALL_NETWORKS_SERVICE.serviceName} (2)", ALL_NETWORKS_SERVICE.serviceType).apply {
+            "${ALL_NETWORKS_SERVICE.serviceName} (2)",
+            ALL_NETWORKS_SERVICE.serviceType
+        ).apply {
             port = ALL_NETWORKS_SERVICE.port
             hostAddresses = ALL_NETWORKS_SERVICE.hostAddresses
             network = ALL_NETWORKS_SERVICE.network
@@ -473,14 +624,16 @@
 
         val expectedLongRenamed = NsdServiceInfo(
             "${LONG_ALL_NETWORKS_SERVICE.serviceName.dropLast(4)} (2)",
-            LONG_ALL_NETWORKS_SERVICE.serviceType).apply {
+            LONG_ALL_NETWORKS_SERVICE.serviceType
+        ).apply {
             port = LONG_ALL_NETWORKS_SERVICE.port
             hostAddresses = LONG_ALL_NETWORKS_SERVICE.hostAddresses
             network = LONG_ALL_NETWORKS_SERVICE.network
         }
 
         val expectedCaseInsensitiveRenamed = NsdServiceInfo(
-            "${ALL_NETWORKS_SERVICE_2.serviceName} (3)", ALL_NETWORKS_SERVICE_2.serviceType
+            "${ALL_NETWORKS_SERVICE_2.serviceName} (3)",
+            ALL_NETWORKS_SERVICE_2.serviceType
         ).apply {
             port = ALL_NETWORKS_SERVICE_2.port
             hostAddresses = ALL_NETWORKS_SERVICE_2.hostAddresses
@@ -488,30 +641,58 @@
         }
 
         val intAdvCbCaptor = ArgumentCaptor.forClass(MdnsInterfaceAdvertiser.Callback::class.java)
-        verify(mockDeps).makeAdvertiser(eq(mockSocket1), eq(listOf(TEST_LINKADDR)),
-                eq(thread.looper), any(), intAdvCbCaptor.capture(), eq(TEST_HOSTNAME), any(), any()
+        verify(mockDeps).makeAdvertiser(
+            eq(mockSocket1),
+            eq(listOf(TEST_LINKADDR)),
+            eq(thread.looper),
+            any(),
+            intAdvCbCaptor.capture(),
+            eq(TEST_HOSTNAME),
+            any(),
+            any()
         )
-        verify(mockInterfaceAdvertiser1).addService(eq(SERVICE_ID_1),
-                argThat { it.matches(SERVICE_1) }, any())
-        verify(mockInterfaceAdvertiser1).addService(eq(SERVICE_ID_2),
-                argThat { it.matches(expectedRenamed) }, any())
-        verify(mockInterfaceAdvertiser1).addService(eq(LONG_SERVICE_ID_1),
-                argThat { it.matches(LONG_SERVICE_1) }, any())
-        verify(mockInterfaceAdvertiser1).addService(eq(LONG_SERVICE_ID_2),
-            argThat { it.matches(expectedLongRenamed) }, any())
-        verify(mockInterfaceAdvertiser1).addService(eq(CASE_INSENSITIVE_TEST_SERVICE_ID),
-            argThat { it.matches(expectedCaseInsensitiveRenamed) }, any())
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(SERVICE_ID_1),
+            argThat { it.matches(SERVICE_1) },
+            any()
+        )
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(SERVICE_ID_2),
+            argThat { it.matches(expectedRenamed) },
+            any()
+        )
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(LONG_SERVICE_ID_1),
+            argThat { it.matches(LONG_SERVICE_1) },
+            any()
+        )
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(LONG_SERVICE_ID_2),
+            argThat { it.matches(expectedLongRenamed) },
+            any()
+        )
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(CASE_INSENSITIVE_TEST_SERVICE_ID),
+            argThat { it.matches(expectedCaseInsensitiveRenamed) },
+            any()
+        )
 
         doReturn(false).`when`(mockInterfaceAdvertiser1).isProbing(SERVICE_ID_1)
         postSync { intAdvCbCaptor.value.onServiceProbingSucceeded(
-                mockInterfaceAdvertiser1, SERVICE_ID_1) }
+            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.onServiceProbingSucceeded(
-                mockInterfaceAdvertiser1, SERVICE_ID_2) }
-        verify(cb).onRegisterServiceSucceeded(eq(SERVICE_ID_2),
-                argThat { it.matches(expectedRenamed) })
+            mockInterfaceAdvertiser1,
+            SERVICE_ID_2
+        ) }
+        verify(cb).onRegisterServiceSucceeded(
+            eq(SERVICE_ID_2),
+            argThat { it.matches(expectedRenamed) }
+        )
 
         postSync { oneNetSocketCb.onInterfaceDestroyed(TEST_SOCKETKEY_1, mockSocket1) }
         postSync { allNetSocketCb.onInterfaceDestroyed(TEST_SOCKETKEY_1, mockSocket1) }
@@ -523,10 +704,21 @@
     @Test
     fun testAddOrUpdateService_Updates() {
         val advertiser =
-                MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags,
-                    context)
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, ALL_NETWORKS_SERVICE,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+                MdnsAdvertiser(
+                    thread.looper,
+                    socketProvider,
+                    cb,
+                    mockDeps,
+                    sharedlog,
+                    flags,
+                    context
+                )
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            ALL_NETWORKS_SERVICE,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
         verify(socketProvider).requestSocket(eq(null), socketCbCaptor.capture())
@@ -534,41 +726,70 @@
         val socketCb = socketCbCaptor.value
         postSync { socketCb.onSocketCreated(TEST_SOCKETKEY_1, mockSocket1, listOf(TEST_LINKADDR)) }
 
-        verify(mockInterfaceAdvertiser1).addService(eq(SERVICE_ID_1),
-                argThat { it.matches(ALL_NETWORKS_SERVICE) }, any())
+        verify(mockInterfaceAdvertiser1).addService(
+            eq(SERVICE_ID_1),
+            argThat { it.matches(ALL_NETWORKS_SERVICE) },
+            any()
+        )
 
         val updateOptions = MdnsAdvertisingOptions.newBuilder().setIsOnlyUpdate(true).build()
 
         // Update with serviceId that is not registered yet should fail
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_2, ALL_NETWORKS_SERVICE_SUBTYPE,
-                updateOptions, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_2,
+            ALL_NETWORKS_SERVICE_SUBTYPE,
+            updateOptions,
+            TEST_CLIENT_UID_1
+        ) }
         verify(cb).onRegisterServiceFailed(SERVICE_ID_2, NsdManager.FAILURE_INTERNAL_ERROR)
 
         // Update service with different NsdServiceInfo should fail
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1_SUBTYPE, updateOptions,
-                TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            SERVICE_1_SUBTYPE,
+            updateOptions,
+            TEST_CLIENT_UID_1
+        ) }
         verify(cb).onRegisterServiceFailed(SERVICE_ID_1, NsdManager.FAILURE_INTERNAL_ERROR)
 
         // Update service with same NsdServiceInfo but different subType should succeed
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, ALL_NETWORKS_SERVICE_SUBTYPE,
-                updateOptions, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            ALL_NETWORKS_SERVICE_SUBTYPE,
+            updateOptions,
+            TEST_CLIENT_UID_1
+        ) }
         verify(mockInterfaceAdvertiser1).updateService(eq(SERVICE_ID_1), eq(setOf(TEST_SUBTYPE)))
 
         // Newly created MdnsInterfaceAdvertiser will get addService() call.
         postSync { socketCb.onSocketCreated(TEST_SOCKETKEY_2, mockSocket2, listOf(TEST_LINKADDR2)) }
-        verify(mockInterfaceAdvertiser2).addService(eq(SERVICE_ID_1),
-                argThat { it.matches(ALL_NETWORKS_SERVICE_SUBTYPE) }, any())
+        verify(mockInterfaceAdvertiser2).addService(
+            eq(SERVICE_ID_1),
+            argThat { it.matches(ALL_NETWORKS_SERVICE_SUBTYPE) },
+            any()
+        )
     }
 
     @Test
     fun testAddOrUpdateService_customTtl_registeredSuccess() {
         val advertiser = MdnsAdvertiser(
-                thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
+            thread.looper,
+            socketProvider,
+            cb,
+            mockDeps,
+            sharedlog,
+            flags,
+            context
+        )
         val updateOptions =
                 MdnsAdvertisingOptions.newBuilder().setTtl(Duration.ofSeconds(30)).build()
 
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, ALL_NETWORKS_SERVICE,
-                updateOptions, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            ALL_NETWORKS_SERVICE,
+            updateOptions,
+            TEST_CLIENT_UID_1
+        ) }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
         verify(socketProvider).requestSocket(eq(null), socketCbCaptor.capture())
@@ -582,8 +803,12 @@
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
         verify(mockDeps, times(1)).generateHostname(anyBoolean())
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1,
-                DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            SERVICE_1,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
         postSync { advertiser.removeService(SERVICE_ID_1) }
         verify(mockDeps, times(2)).generateHostname(anyBoolean())
     }
@@ -593,8 +818,12 @@
         val flags = MdnsFeatureFlags.newBuilder().setIsShortHostnamesEnabled(shortHostname).build()
         val advertiser =
             MdnsAdvertiser(thread.looper, socketProvider, cb, mockDeps, sharedlog, flags, context)
-        postSync { advertiser.addOrUpdateService(SERVICE_ID_1, SERVICE_1,
-            DEFAULT_ADVERTISING_OPTION, TEST_CLIENT_UID_1) }
+        postSync { advertiser.addOrUpdateService(
+            SERVICE_ID_1,
+            SERVICE_1,
+            DEFAULT_ADVERTISING_OPTION,
+            TEST_CLIENT_UID_1
+        ) }
 
         val socketCbCaptor = ArgumentCaptor.forClass(SocketCallback::class.java)
         verify(socketProvider).requestSocket(eq(TEST_NETWORK_1), socketCbCaptor.capture())
@@ -621,8 +850,10 @@
         val hostname = doHostnameGenerationTest(shortHostname = true)
         // Short hostnames are [8 uppercase letters or digits].local
         assertEquals(2, hostname.size)
-        assertTrue(Regex("Android_[A-Z0-9]{8}").matches(hostname[0]),
-            "Unexpected hostname: ${hostname.contentToString()}")
+        assertTrue(
+            Regex("Android_[A-Z0-9]{8}").matches(hostname[0]),
+            "Unexpected hostname: ${hostname.contentToString()}"
+        )
         assertEquals("local", hostname[1])
     }
 
@@ -631,8 +862,10 @@
         val hostname = doHostnameGenerationTest(shortHostname = false)
         // Long hostnames are Android_[32 lowercase hex characters].local
         assertEquals(2, hostname.size)
-        assertTrue(Regex("Android_[a-f0-9]{32}").matches(hostname[0]),
-            "Unexpected hostname: ${hostname.contentToString()}")
+        assertTrue(
+            Regex("Android_[a-f0-9]{32}").matches(hostname[0]),
+            "Unexpected hostname: ${hostname.contentToString()}"
+        )
         assertEquals("local", hostname[1])
     }
 
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 ab2fb99..71a3274 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsDiscoveryManagerTests.java
@@ -442,14 +442,12 @@
             // Verify the checkAndRunOnHandlerThread method
             final CompletableFuture<Boolean> future1 = new CompletableFuture<>();
             executor.checkAndRunOnHandlerThread(()-> future1.complete(true));
-            assertTrue(future1.isDone());
             assertTrue(future1.get(DEFAULT_TIMEOUT, TimeUnit.MILLISECONDS));
 
             // Verify the execute method
             final CompletableFuture<Boolean> future2 = new CompletableFuture<>();
             executor.execute(()-> future2.complete(true));
             testableLooper.processAllMessages();
-            assertTrue(future2.isDone());
             assertTrue(future2.get(DEFAULT_TIMEOUT, TimeUnit.MILLISECONDS));
 
             // Verify the executeDelayed method
@@ -469,7 +467,6 @@
             // The function should be executed.
             testableLooper.moveTimeForward(500L);
             testableLooper.processAllMessages();
-            assertTrue(future3.isDone());
             assertTrue(future3.get(500L, TimeUnit.MILLISECONDS));
         } finally {
             testableLooper.destroy();
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSBpfNetMapsTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSBpfNetMapsTest.kt
index 8155fd0..06cb7ee 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSBpfNetMapsTest.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSBpfNetMapsTest.kt
@@ -21,7 +21,10 @@
 import android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED
 import android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED
 import android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_WHITELISTED
+import android.net.InetAddresses
+import android.net.LinkProperties
 import android.os.Build
+import android.os.Build.VERSION_CODES
 import androidx.test.filters.SmallTest
 import com.android.testutils.DevSdkIgnoreRule
 import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter
@@ -33,11 +36,32 @@
 import org.junit.runner.RunWith
 import org.mockito.ArgumentMatchers.anyBoolean
 import org.mockito.ArgumentMatchers.anyInt
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mockito.atLeastOnce
 import org.mockito.Mockito.doReturn
 import org.mockito.Mockito.inOrder
 import org.mockito.Mockito.never
 import org.mockito.Mockito.verify
 
+internal val LOCAL_DNS = InetAddresses.parseNumericAddress("224.0.1.2")
+internal val NON_LOCAL_DNS = InetAddresses.parseNumericAddress("76.76.75.75")
+
+private const val IFNAME_1 = "wlan1"
+private const val IFNAME_2 = "wlan2"
+private const val PORT_53 = 53
+private const val PROTOCOL_TCP = 6
+private const val PROTOCOL_UDP = 17
+
+private val lpWithNoLocalDns = LinkProperties().apply {
+    addDnsServer(NON_LOCAL_DNS)
+    interfaceName = IFNAME_1
+}
+
+private val lpWithLocalDns = LinkProperties().apply {
+    addDnsServer(LOCAL_DNS)
+    interfaceName = IFNAME_2
+}
+
 @DevSdkIgnoreRunner.MonitorThreadLeak
 @RunWith(DevSdkIgnoreRunner::class)
 @SmallTest
@@ -69,6 +93,81 @@
         }
     }
 
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    fun testLocalPrefixesUpdatedInBpfMap() {
+        // Connect Wi-Fi network with non-local dns.
+        val wifiAgent = Agent(nc = defaultNc(), lp = lpWithNoLocalDns)
+        wifiAgent.connect()
+
+        // Verify that block rule is added to BpfMap for local prefixes.
+        verify(bpfNetMaps, atLeastOnce()).addLocalNetAccess(any(), eq(IFNAME_1),
+            any(), eq(0), eq(0), eq(false))
+
+        wifiAgent.disconnect()
+        val cellAgent = Agent(nc = defaultNc(), lp = lpWithLocalDns)
+        cellAgent.connect()
+
+        // Verify that block rule is removed from BpfMap for local prefixes.
+        verify(bpfNetMaps, atLeastOnce()).removeLocalNetAccess(any(), eq(IFNAME_1),
+            any(), eq(0), eq(0))
+
+        cellAgent.disconnect()
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    fun testLocalDnsNotUpdatedInBpfMap() {
+        // Connect Wi-Fi network with non-local dns.
+        val wifiAgent = Agent(nc = defaultNc(), lp = lpWithNoLocalDns)
+        wifiAgent.connect()
+
+        // Verify that No allow rule is added to BpfMap since there is no local dns.
+        verify(bpfNetMaps, never()).addLocalNetAccess(any(), any(), any(), any(), any(),
+            eq(true))
+
+        wifiAgent.disconnect()
+        val cellAgent = Agent(nc = defaultNc(), lp = lpWithLocalDns)
+        cellAgent.connect()
+
+        // Verify that No allow rule from port 53 is removed on network change
+        // because no dns was added
+        verify(bpfNetMaps, never()).removeLocalNetAccess(eq(192), eq(IFNAME_1),
+            eq(NON_LOCAL_DNS), any(), eq(PORT_53))
+
+        cellAgent.disconnect()
+    }
+
+    @IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+    @Test
+    fun testLocalDnsUpdatedInBpfMap() {
+        // Connect Wi-Fi network with one local Dns.
+        val wifiAgent = Agent(nc = defaultNc(), lp = lpWithLocalDns)
+        wifiAgent.connect()
+
+        // Verify that allow rule is added to BpfMap for local dns at port 53,
+        // for TCP(=6) protocol
+        verify(bpfNetMaps, atLeastOnce()).addLocalNetAccess(eq(192), eq(IFNAME_2),
+            eq(LOCAL_DNS), eq(PROTOCOL_TCP), eq(PORT_53), eq(true))
+        // And for UDP(=17) protocol
+        verify(bpfNetMaps, atLeastOnce()).addLocalNetAccess(eq(192), eq(IFNAME_2),
+            eq(LOCAL_DNS), eq(PROTOCOL_UDP), eq(PORT_53), eq(true))
+
+        wifiAgent.disconnect()
+        val cellAgent = Agent(nc = defaultNc(), lp = lpWithNoLocalDns)
+        cellAgent.connect()
+
+        // Verify that allow rule is removed for local dns on network change,
+        // for TCP(=6) protocol
+        verify(bpfNetMaps, atLeastOnce()).removeLocalNetAccess(eq(192), eq(IFNAME_2),
+            eq(LOCAL_DNS), eq(PROTOCOL_TCP), eq(PORT_53))
+        // And for UDP(=17) protocol
+        verify(bpfNetMaps, atLeastOnce()).removeLocalNetAccess(eq(192), eq(IFNAME_2),
+            eq(LOCAL_DNS), eq(PROTOCOL_UDP), eq(PORT_53))
+
+        cellAgent.disconnect()
+    }
+
     private fun mockDataSaverStatus(status: Int) {
         doReturn(status).`when`(context.networkPolicyManager).getRestrictBackgroundStatus(anyInt())
         // While the production code dispatches the intent on the handler thread,
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSL2capProviderTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSL2capProviderTest.kt
new file mode 100644
index 0000000..d44bd0a
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSL2capProviderTest.kt
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.bluetooth.BluetoothAdapter
+import android.bluetooth.BluetoothManager
+import android.bluetooth.BluetoothServerSocket
+import android.bluetooth.BluetoothSocket
+import android.content.Context
+import android.net.L2capNetworkSpecifier
+import android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_6LOWPAN
+import android.net.L2capNetworkSpecifier.HEADER_COMPRESSION_NONE
+import android.net.L2capNetworkSpecifier.ROLE_SERVER
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED
+import android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED
+import android.net.NetworkCapabilities.TRANSPORT_BLUETOOTH
+import android.net.NetworkProvider
+import android.net.NetworkProvider.NetworkOfferCallback
+import android.net.NetworkRequest
+import android.net.NetworkScore
+import android.net.NetworkSpecifier
+import android.os.Build
+import android.os.HandlerThread
+import android.os.Looper
+import com.android.server.L2capNetworkProvider
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.RecorderCallback.CallbackEntry.Reserved
+import com.android.testutils.TestableNetworkCallback
+import java.io.IOException
+import java.util.concurrent.Executor
+import java.util.concurrent.LinkedBlockingQueue
+import kotlin.test.assertEquals
+import kotlin.test.assertNull
+import org.junit.After
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mock
+import org.mockito.Mockito.doAnswer
+import org.mockito.Mockito.doReturn
+import org.mockito.Mockito.mock
+import org.mockito.MockitoAnnotations
+
+private const val PSM = 0x85
+private val REMOTE_MAC = byteArrayOf(1, 2, 3, 4, 5, 6)
+private val REQUEST = NetworkRequest.Builder()
+        .addTransportType(TRANSPORT_BLUETOOTH)
+        .removeCapability(NET_CAPABILITY_TRUSTED)
+        .removeCapability(NET_CAPABILITY_NOT_RESTRICTED)
+        .build()
+
+@RunWith(DevSdkIgnoreRunner::class)
+@IgnoreUpTo(Build.VERSION_CODES.R)
+class CSL2capProviderTest : CSTest() {
+    private val btAdapter = mock<BluetoothAdapter>()
+    private val btServerSocket = mock<BluetoothServerSocket>()
+    private val btSocket = mock<BluetoothSocket>()
+    private val providerDeps = mock<L2capNetworkProvider.Dependencies>()
+    private val acceptQueue = LinkedBlockingQueue<BluetoothSocket>()
+
+    private val handlerThread = HandlerThread("CSL2capProviderTest thread").apply { start() }
+
+    // Requires Dependencies mock to be setup before creation.
+    private lateinit var provider: L2capNetworkProvider
+
+    @Before
+    fun innerSetUp() {
+        doReturn(btAdapter).`when`(bluetoothManager).getAdapter()
+        doReturn(btServerSocket).`when`(btAdapter).listenUsingInsecureL2capChannel()
+        doReturn(PSM).`when`(btServerSocket).getPsm();
+
+        doAnswer {
+            val sock = acceptQueue.take()
+            sock ?: throw IOException()
+        }.`when`(btServerSocket).accept()
+
+        doAnswer {
+            acceptQueue.put(null)
+        }.`when`(btServerSocket).close()
+
+        doReturn(handlerThread).`when`(providerDeps).getHandlerThread()
+        provider = L2capNetworkProvider(providerDeps, context)
+        provider.start()
+    }
+
+    @After
+    fun innerTearDown() {
+        handlerThread.quitSafely()
+        handlerThread.join()
+    }
+
+    private fun reserveNetwork(nr: NetworkRequest) = TestableNetworkCallback().also {
+        cm.reserveNetwork(nr, csHandler, it)
+    }
+
+    private fun requestNetwork(nr: NetworkRequest) = TestableNetworkCallback().also {
+        cm.requestNetwork(nr, it, csHandler)
+    }
+
+    private fun NetworkRequest.copyWithSpecifier(specifier: NetworkSpecifier): NetworkRequest {
+        // Note: NetworkRequest.Builder(NetworkRequest) *does not* perform a defensive copy but
+        // changes the underlying request.
+        return NetworkRequest.Builder(NetworkRequest(this))
+                .setNetworkSpecifier(specifier)
+                .build()
+    }
+
+    @Test
+    fun testReservation() {
+        val l2capServerSpecifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .setHeaderCompression(HEADER_COMPRESSION_6LOWPAN)
+                .build()
+        val l2capReservation = REQUEST.copyWithSpecifier(l2capServerSpecifier)
+        val reservationCb = reserveNetwork(l2capReservation)
+
+        val reservedCaps = reservationCb.expect<Reserved>().caps
+        val reservedSpec = reservedCaps.networkSpecifier as L2capNetworkSpecifier
+
+        assertEquals(PSM, reservedSpec.getPsm())
+        assertEquals(HEADER_COMPRESSION_6LOWPAN, reservedSpec.headerCompression)
+        assertNull(reservedSpec.remoteAddress)
+
+        reservationCb.assertNoCallback()
+    }
+
+    @Test
+    fun testBlanketOffer_reservationWithoutSpecifier() {
+        reserveNetwork(REQUEST).assertNoCallback()
+    }
+
+    @Test
+    fun testBlanketOffer_reservationWithCorrectSpecifier() {
+        var specifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .setHeaderCompression(HEADER_COMPRESSION_6LOWPAN)
+                .build()
+        var nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).expect<Reserved>()
+
+        specifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .setHeaderCompression(HEADER_COMPRESSION_NONE)
+                .build()
+        nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).expect<Reserved>()
+    }
+
+    @Test
+    fun testBlanketOffer_reservationWithIncorrectSpecifier() {
+        var specifier = L2capNetworkSpecifier.Builder().build()
+        var nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).assertNoCallback()
+
+        specifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .build()
+        nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).assertNoCallback()
+
+        specifier = L2capNetworkSpecifier.Builder()
+                .setRole(ROLE_SERVER)
+                .setHeaderCompression(HEADER_COMPRESSION_NONE)
+                .setPsm(0x81)
+                .build()
+        nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).assertNoCallback()
+
+        specifier = L2capNetworkSpecifier.Builder()
+                .setHeaderCompression(HEADER_COMPRESSION_NONE)
+                .build()
+        nr = REQUEST.copyWithSpecifier(specifier)
+        reserveNetwork(nr).assertNoCallback()
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt b/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
index 83fff87..3583f84 100644
--- a/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/CSLocalAgentTests.kt
@@ -54,9 +54,7 @@
 import org.mockito.Mockito.inOrder
 import org.mockito.Mockito.never
 import org.mockito.Mockito.timeout
-import org.mockito.Mockito.times
 import org.mockito.Mockito.verify
-import org.mockito.Mockito.verifyNoMoreInteractions
 
 private const val TIMEOUT_MS = 200L
 private const val MEDIUM_TIMEOUT_MS = 1_000L
diff --git a/tests/unit/java/com/android/server/connectivityservice/CSLocalNetworkProtectionTest.kt b/tests/unit/java/com/android/server/connectivityservice/CSLocalNetworkProtectionTest.kt
new file mode 100644
index 0000000..5bf6e04
--- /dev/null
+++ b/tests/unit/java/com/android/server/connectivityservice/CSLocalNetworkProtectionTest.kt
@@ -0,0 +1,516 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License")
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server
+
+import android.net.InetAddresses
+import android.net.IpPrefix
+import android.net.LinkAddress
+import android.net.LinkProperties
+import android.net.NetworkCapabilities
+import android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED
+import android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN
+import android.net.NetworkCapabilities.TRANSPORT_VPN
+import android.net.NetworkCapabilities.TRANSPORT_WIFI
+import android.net.NetworkRequest
+import android.os.Build
+import androidx.test.filters.SmallTest
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.testutils.RecorderCallback.CallbackEntry.LinkPropertiesChanged
+import com.android.testutils.RecorderCallback.CallbackEntry.Lost
+import com.android.testutils.TestableNetworkCallback
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mockito.never
+import org.mockito.Mockito.verify
+
+private const val LONG_TIMEOUT_MS = 5_000
+private const val PREFIX_LENGTH_IPV4 = 32 + 96
+private const val PREFIX_LENGTH_IPV6 = 32
+private const val WIFI_IFNAME = "wlan0"
+private const val WIFI_IFNAME_2 = "wlan1"
+
+private val wifiNc = NetworkCapabilities.Builder()
+        .addTransportType(TRANSPORT_WIFI)
+        .addCapability(NET_CAPABILITY_INTERNET)
+        .addCapability(NET_CAPABILITY_NOT_VCN_MANAGED)
+        .build()
+
+private fun lp(iface: String, vararg linkAddresses: LinkAddress) = LinkProperties().apply {
+    interfaceName = iface
+    for (linkAddress in linkAddresses) {
+        addLinkAddress(linkAddress)
+    }
+}
+
+private fun nr(transport: Int) = NetworkRequest.Builder()
+        .clearCapabilities()
+        .addTransportType(transport).apply {
+            if (transport != TRANSPORT_VPN) {
+                addCapability(NET_CAPABILITY_NOT_VPN)
+            }
+        }.build()
+
+@DevSdkIgnoreRunner.MonitorThreadLeak
+@RunWith(DevSdkIgnoreRunner::class)
+@SmallTest
+@IgnoreUpTo(Build.VERSION_CODES.VANILLA_ICE_CREAM)
+class CSLocalNetworkProtectionTest : CSTest() {
+    private val LOCAL_IPV6_IP_ADDRESS_PREFIX = IpPrefix("fe80::1cf1:35ff:fe8c:db87/64")
+    private val LOCAL_IPV6_LINK_ADDRESS = LinkAddress(
+        LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress(),
+        LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()
+    )
+
+    private val LOCAL_IPV4_IP_ADDRESS_PREFIX_1 = IpPrefix("10.0.0.184/24")
+    private val LOCAL_IPV4_LINK_ADDRRESS_1 =
+        LinkAddress(
+            LOCAL_IPV4_IP_ADDRESS_PREFIX_1.getAddress(),
+            LOCAL_IPV4_IP_ADDRESS_PREFIX_1.getPrefixLength()
+        )
+
+    private val LOCAL_IPV4_IP_ADDRESS_PREFIX_2 = IpPrefix("10.0.255.184/24")
+    private val LOCAL_IPV4_LINK_ADDRRESS_2 =
+        LinkAddress(
+            LOCAL_IPV4_IP_ADDRESS_PREFIX_2.getAddress(),
+            LOCAL_IPV4_IP_ADDRESS_PREFIX_2.getPrefixLength()
+        )
+
+    @Test
+    fun testNetworkWithIPv6LocalAddress_AddressAddedToBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        // Connecting to network with IPv6 local address in LinkProperties
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+    }
+
+    @Test
+    fun testNetworkWithIPv4LocalAddress_AddressAddedToBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV4_LINK_ADDRRESS_1)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 8),
+            eq(WIFI_IFNAME),
+            eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+    }
+
+    @Test
+    fun testChangeLinkPropertiesWithDifferentLinkAddresses_AddressReplacedInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+
+        // Updating Link Property from IPv6 in Link Address to IPv4 in Link Address
+        val wifiLp2 = lp(WIFI_IFNAME, LOCAL_IPV4_LINK_ADDRRESS_1)
+        wifiAgent.sendLinkProperties(wifiLp2)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 8),
+            eq(WIFI_IFNAME),
+            eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+        // Verifying IPv6 address should be removed from local_net_access map
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0)
+        )
+    }
+
+    @Test
+    fun testStackedLinkPropertiesWithDifferentLinkAddresses_AddressAddedInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiLp2 = lp(WIFI_IFNAME_2, LOCAL_IPV4_LINK_ADDRRESS_1)
+        // Adding stacked link
+        wifiLp.addStackedLink(wifiLp2)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+                eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+                eq(WIFI_IFNAME),
+                eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+                eq(0),
+                eq(0),
+                eq(false)
+        )
+
+        // Multicast and Broadcast address should always be populated on stacked link
+        // in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress(WIFI_IFNAME_2)
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated as part of stacked link
+        // in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+                eq(PREFIX_LENGTH_IPV4 + 8),
+                eq(WIFI_IFNAME_2),
+                eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+                eq(0),
+                eq(0),
+                eq(false)
+        )
+        // As both addresses are in stacked links, so no address should be removed from the map.
+        verify(bpfNetMaps, never()).removeLocalNetAccess(any(), any(), any(), any(), any())
+    }
+
+    @Test
+    fun testRemovingStackedLinkProperties_AddressRemovedInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiLp2 = lp(WIFI_IFNAME_2, LOCAL_IPV4_LINK_ADDRRESS_1)
+        // populating stacked link
+        wifiLp.addStackedLink(wifiLp2)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+                eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+                eq(WIFI_IFNAME),
+                eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+                eq(0),
+                eq(0),
+                eq(false)
+        )
+
+        // Multicast and Broadcast address should always be populated on stacked link
+        // in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress(WIFI_IFNAME_2)
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated as part of stacked link
+        // in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+                eq(PREFIX_LENGTH_IPV4 + 8),
+                eq(WIFI_IFNAME_2),
+                eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+                eq(0),
+                eq(0),
+                eq(false)
+        )
+        // As both addresses are in stacked links, so no address should be removed from the map.
+        verify(bpfNetMaps, never()).removeLocalNetAccess(any(), any(), any(), any(), any())
+
+        // replacing link properties without stacked links
+        val wifiLp_3 = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        wifiAgent.sendLinkProperties(wifiLp_3)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // As both stacked links is removed, 10.0.0.0/8 should be removed from local_net_access map.
+        verify(bpfNetMaps).removeLocalNetAccess(
+                eq(PREFIX_LENGTH_IPV4 + 8),
+                eq(WIFI_IFNAME_2),
+                eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+                eq(0),
+                eq(0)
+        )
+    }
+
+    @Test
+    fun testChangeLinkPropertiesWithLinkAddressesInSameRange_AddressIntactInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV4_LINK_ADDRRESS_1)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 8),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV4_IP_ADDRESS_PREFIX_1.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+
+        // Updating Link Property from one IPv4 to another IPv4 within same range(10.0.0.0/8)
+        val wifiLp2 = lp(WIFI_IFNAME, LOCAL_IPV4_LINK_ADDRRESS_2)
+        wifiAgent.sendLinkProperties(wifiLp2)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // As both addresses below to same range, so no address should be removed from the map.
+        verify(bpfNetMaps, never()).removeLocalNetAccess(any(), any(), any(), any(), any())
+    }
+
+    @Test
+    fun testChangeLinkPropertiesWithDifferentInterface_AddressReplacedInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+
+        // Updating Link Property by changing interface name which has IPv4 instead of IPv6
+        val wifiLp2 = lp(WIFI_IFNAME_2, LOCAL_IPV4_LINK_ADDRRESS_1)
+        wifiAgent.sendLinkProperties(wifiLp2)
+        cb.expect<LinkPropertiesChanged>(wifiAgent.network)
+
+        // Multicast and Broadcast address should be populated in local_net_access map for
+        // new interface
+        verifyPopulationOfMulticastAndBroadcastAddress(WIFI_IFNAME_2)
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 8),
+            eq(WIFI_IFNAME_2),
+            eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+        // Multicast and Broadcast address should be removed in local_net_access map for
+        // old interface
+        verifyRemovalOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be removed from local_net_access map
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0)
+        )
+    }
+
+    @Test
+    fun testAddingAnotherNetwork_AllAddressesAddedInBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+
+        // Adding another network with LinkProperty having IPv4 in LinkAddress
+        val wifiLp2 = lp(WIFI_IFNAME_2, LOCAL_IPV4_LINK_ADDRRESS_1)
+        val wifiAgent2 = Agent(nc = wifiNc, lp = wifiLp2)
+        wifiAgent2.connect()
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress(WIFI_IFNAME_2)
+        // Verifying IPv4 matching prefix(10.0.0.0/8) should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 8),
+            eq(WIFI_IFNAME_2),
+            eq(InetAddresses.parseNumericAddress("10.0.0.0")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+        // Verifying nothing should be removed from local_net_access map
+        verify(bpfNetMaps, never()).removeLocalNetAccess(any(), any(), any(), any(), any())
+    }
+
+    @Test
+    fun testDestroyingNetwork_AddressesRemovedFromBpfMap() {
+        val nr = nr(TRANSPORT_WIFI)
+        val cb = TestableNetworkCallback()
+        cm.requestNetwork(nr, cb)
+
+        val wifiLp = lp(WIFI_IFNAME, LOCAL_IPV6_LINK_ADDRESS)
+        val wifiAgent = Agent(nc = wifiNc, lp = wifiLp)
+        wifiAgent.connect()
+        cb.expectAvailableCallbacks(wifiAgent.network, validated = false)
+
+        // Multicast and Broadcast address should always be populated in local_net_access map
+        verifyPopulationOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be populated in local_net_access map
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq( PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+
+        // Unregistering the network
+        wifiAgent.unregisterAfterReplacement(LONG_TIMEOUT_MS)
+        cb.expect<Lost>(wifiAgent.network)
+
+        // Multicast and Broadcast address should be removed in local_net_access map for
+        // old interface
+        verifyRemovalOfMulticastAndBroadcastAddress()
+        // Verifying IPv6 address should be removed from local_net_access map
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + LOCAL_IPV6_IP_ADDRESS_PREFIX.getPrefixLength()),
+            eq(WIFI_IFNAME),
+            eq(LOCAL_IPV6_IP_ADDRESS_PREFIX.getAddress()),
+            eq(0),
+            eq(0)
+        )
+    }
+
+    // Verify if multicast and broadcast addresses have been added using addLocalNetAccess
+    fun verifyPopulationOfMulticastAndBroadcastAddress(
+        interfaceName: String = WIFI_IFNAME
+    ) {
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 4),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("224.0.0.0")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + 8),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("ff00::")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+        verify(bpfNetMaps).addLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 32),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("255.255.255.255")),
+            eq(0),
+            eq(0),
+            eq(false)
+        )
+    }
+
+    // Verify if multicast and broadcast addresses have been removed using removeLocalNetAccess
+    fun verifyRemovalOfMulticastAndBroadcastAddress(
+        interfaceName: String = WIFI_IFNAME
+    ) {
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 4),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("224.0.0.0")),
+            eq(0),
+            eq(0)
+        )
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV6 + 8),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("ff00::")),
+            eq(0),
+            eq(0)
+        )
+        verify(bpfNetMaps).removeLocalNetAccess(
+            eq(PREFIX_LENGTH_IPV4 + 32),
+            eq(interfaceName),
+            eq(InetAddresses.parseNumericAddress("255.255.255.255")),
+            eq(0),
+            eq(0)
+        )
+    }
+}
diff --git a/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt b/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
index ae196a6..557bfd6 100644
--- a/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/base/CSTest.kt
@@ -18,6 +18,7 @@
 
 import android.app.AlarmManager
 import android.app.AppOpsManager
+import android.bluetooth.BluetoothManager
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -71,6 +72,7 @@
 import com.android.server.connectivity.MultinetworkPolicyTracker
 import com.android.server.connectivity.MultinetworkPolicyTrackerTestDependencies
 import com.android.server.connectivity.NetworkRequestStateStatsMetrics
+import com.android.server.connectivity.PermissionMonitor
 import com.android.server.connectivity.ProxyTracker
 import com.android.server.connectivity.SatelliteAccessController
 import com.android.testutils.visibleOnHandlerThread
@@ -209,12 +211,14 @@
         doReturn(true).`when`(it).isDataCapable()
     }
     val subscriptionManager = mock<SubscriptionManager>()
+    val bluetoothManager = mock<BluetoothManager>()
 
     val multicastRoutingCoordinatorService = mock<MulticastRoutingCoordinatorService>()
     val satelliteAccessController = mock<SatelliteAccessController>()
     val destroySocketsWrapper = mock<DestroySocketsWrapper>()
 
     val deps = CSDeps()
+    val permDeps = PermDeps()
 
     // Initializations that start threads are done from setUp to avoid thread leak
     lateinit var alarmHandlerThread: HandlerThread
@@ -251,7 +255,9 @@
 
         alarmHandlerThread = HandlerThread("TestAlarmManager").also { it.start() }
         alarmManager = makeMockAlarmManager(alarmHandlerThread)
-        service = makeConnectivityService(context, netd, deps).also { it.systemReadyInternal() }
+        service = makeConnectivityService(context, netd, deps, permDeps).also {
+            it.systemReadyInternal()
+        }
         cm = ConnectivityManager(context, service)
         // csHandler initialization must be after makeConnectivityService since ConnectivityService
         // constructor starts csHandlerThread
@@ -393,6 +399,12 @@
             // Call mocked destroyLiveTcpSocketsByOwnerUids so that test can verify this method call
             destroySocketsWrapper.destroyLiveTcpSocketsByOwnerUids(ownerUids)
         }
+
+        override fun makeL2capNetworkProvider(context: Context) = null
+    }
+
+    inner class PermDeps : PermissionMonitor.Dependencies() {
+        override fun shouldEnforceLocalNetRestrictions(uid: Int) = false
     }
 
     inner class CSContext(base: Context) : BroadcastInterceptingContext(base) {
@@ -503,6 +515,7 @@
             Context.BATTERY_STATS_SERVICE -> batteryManager
             Context.STATS_MANAGER -> null // Stats manager is final and can't be mocked
             Context.APP_OPS_SERVICE -> appOpsManager
+            Context.BLUETOOTH_SERVICE -> bluetoothManager
             else -> super.getSystemService(serviceName)
         }
 
diff --git a/tests/unit/java/com/android/server/connectivityservice/base/CSTestHelpers.kt b/tests/unit/java/com/android/server/connectivityservice/base/CSTestHelpers.kt
index 8ff790c..a53d430 100644
--- a/tests/unit/java/com/android/server/connectivityservice/base/CSTestHelpers.kt
+++ b/tests/unit/java/com/android/server/connectivityservice/base/CSTestHelpers.kt
@@ -23,6 +23,7 @@
 import android.content.Context
 import android.content.pm.PackageManager
 import android.content.pm.PackageManager.FEATURE_BLUETOOTH
+import android.content.pm.PackageManager.FEATURE_BLUETOOTH_LE
 import android.content.pm.PackageManager.FEATURE_ETHERNET
 import android.content.pm.PackageManager.FEATURE_WIFI
 import android.content.pm.PackageManager.FEATURE_WIFI_DIRECT
@@ -53,6 +54,7 @@
 import com.android.modules.utils.build.SdkLevel
 import com.android.server.ConnectivityService.Dependencies
 import com.android.server.connectivity.ConnectivityResources
+import com.android.server.connectivity.PermissionMonitor
 import kotlin.test.fail
 import org.mockito.ArgumentMatchers
 import org.mockito.ArgumentMatchers.any
@@ -103,7 +105,13 @@
 }
 
 internal fun makeMockPackageManager(realContext: Context) = mock<PackageManager>().also { pm ->
-    val supported = listOf(FEATURE_WIFI, FEATURE_WIFI_DIRECT, FEATURE_BLUETOOTH, FEATURE_ETHERNET)
+    val supported = listOf(
+            FEATURE_WIFI,
+            FEATURE_WIFI_DIRECT,
+            FEATURE_BLUETOOTH,
+            FEATURE_BLUETOOTH_LE,
+            FEATURE_ETHERNET
+    )
     doReturn(true).`when`(pm).hasSystemFeature(argThat { supported.contains(it) })
     val myPackageName = realContext.packageName
     val myPackageInfo = realContext.packageManager.getPackageInfo(myPackageName,
@@ -185,13 +193,14 @@
 
 private val TEST_LINGER_DELAY_MS = 400
 private val TEST_NASCENT_DELAY_MS = 300
-internal fun makeConnectivityService(context: Context, netd: INetd, deps: Dependencies) =
+internal fun makeConnectivityService(context: Context, netd: INetd, deps: Dependencies,
+                                     mPermDeps: PermissionMonitor.Dependencies) =
         ConnectivityService(
                 context,
                 mock<IDnsResolver>(),
                 mock<IpConnectivityLog>(),
                 netd,
-                deps).also {
+                deps, mPermDeps).also {
             it.mLingerDelayMs = TEST_LINGER_DELAY_MS
             it.mNascentDelayMs = TEST_NASCENT_DELAY_MS
         }
diff --git a/tests/unit/java/com/android/server/net/HeaderCompressionUtilsTest.kt b/tests/unit/java/com/android/server/net/HeaderCompressionUtilsTest.kt
new file mode 100644
index 0000000..8431194
--- /dev/null
+++ b/tests/unit/java/com/android/server/net/HeaderCompressionUtilsTest.kt
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.net
+
+import android.os.Build
+import com.android.testutils.ConnectivityModuleTest
+import com.android.testutils.DevSdkIgnoreRule
+import com.android.testutils.DevSdkIgnoreRunner
+import com.android.internal.util.HexDump
+import com.google.common.truth.Truth.assertThat
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+private const val TIMEOUT = 1000L
+
+@ConnectivityModuleTest
+@RunWith(DevSdkIgnoreRunner::class)
+@DevSdkIgnoreRule.IgnoreUpTo(Build.VERSION_CODES.R)
+class HeaderCompressionUtilsTest {
+
+    private fun decompressHex(hex: String): ByteArray {
+        val bytes = HexDump.hexStringToByteArray(hex)
+        val buf = bytes.copyOf(1500)
+        val newLen = HeaderCompressionUtils.decompress6lowpan(buf, bytes.size)
+        return buf.copyOf(newLen)
+    }
+
+    private fun compressHex(hex: String): ByteArray {
+        val buf = HexDump.hexStringToByteArray(hex)
+        val newLen = HeaderCompressionUtils.compress6lowpan(buf, buf.size)
+        return buf.copyOf(newLen)
+    }
+
+    private fun String.decodeHex() = HexDump.hexStringToByteArray(this)
+
+    @Test
+    fun testHeaderDecompression() {
+        // TF: 00, NH: 0, HLIM: 00, CID: 0, SAC: 0, SAM: 00, M: 0, DAC: 0, DAM: 00
+        var input = "6000" +
+                    "ccf" +                               // ECN + DSCP + 4-bit Pad (here "f")
+                    "12345" +                             // flow label
+                    "11" +                                // next header
+                    "e7" +                                // hop limit
+                    "abcdef1234567890abcdef1234567890" +  // source
+                    "aaabbbcccdddeeefff00011122233344" +  // dest
+                    "abcd"                                // payload
+
+        var output = "6" +                                // version
+                     "cc" +                               // traffic class
+                     "12345" +                            // flow label
+                     "0002" +                             // payload length
+                     "11" +                               // next header
+                     "e7" +                               // hop limit
+                     "abcdef1234567890abcdef1234567890" + // source
+                     "aaabbbcccdddeeefff00011122233344" + // dest
+                     "abcd"                               // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 01, NH: 0, HLIM: 01, CID: 0, SAC: 0, SAM: 01, M: 0, DAC: 0, DAM: 01
+        input  = "6911" +
+                 "5" +                                // ECN + 2-bit pad (here "1")
+                 "f100e" +                            // flow label
+                 "42" +                               // next header
+                 "1102030405060708" +                 // source
+                 "aa0b0c0d0e0f1011" +                 // dest
+                 "abcd"                               // payload
+
+        output = "6" +                                // version
+                 "01" +                               // traffic class
+                 "f100e" +                            // flow label
+                 "0002" +                             // payload length
+                 "42" +                               // next header
+                 "01" +                               // hop limit
+                 "fe800000000000001102030405060708" + // source
+                 "fe80000000000000aa0b0c0d0e0f1011" + // dest
+                 "abcd"                               // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 10, NH: 0, HLIM: 10, CID: 0, SAC: 0, SAM: 10, M: 0, DAC: 0, DAM: 10
+        input  = "7222" +
+                 "cc" +                               // traffic class
+                 "43" +                               // next header
+                 "1234" +                             // source
+                 "abcd" +                             // dest
+                 "abcdef"                             // payload
+
+        output = "6" +                                // version
+                 "cc" +                               // traffic class
+                 "00000" +                            // flow label
+                 "0003" +                             // payload length
+                 "43" +                               // next header
+                 "40" +                               // hop limit
+                 "fe80000000000000000000fffe001234" + // source
+                 "fe80000000000000000000fffe00abcd" + // dest
+                 "abcdef"                             // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 11, NH: 0, HLIM: 11, CID: 0, SAC: 0, SAM: 10, M: 1, DAC: 0, DAM: 00
+        input  = "7b28" +
+                 "44" +                               // next header
+                 "1234" +                             // source
+                 "ff020000000000000000000000000001" + // dest
+                 "abcdef01"                           // payload
+
+        output = "6" +                                // version
+                 "00" +                               // traffic class
+                 "00000" +                            // flow label
+                 "0004" +                             // payload length
+                 "44" +                               // next header
+                 "ff" +                               // hop limit
+                 "fe80000000000000000000fffe001234" + // source
+                 "ff020000000000000000000000000001" + // dest
+                 "abcdef01"                           // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 11, NH: 0, HLIM: 11, CID: 0, SAC: 0, SAM: 10, M: 1, DAC: 0, DAM: 01
+        input  = "7b29" +
+                 "44" +                               // next header
+                 "1234" +                             // source
+                 "02abcdef1234" +                     // dest
+                 "abcdef01"                           // payload
+
+        output = "6" +                                // version
+                 "00" +                               // traffic class
+                 "00000" +                            // flow label
+                 "0004" +                             // payload length
+                 "44" +                               // next header
+                 "ff" +                               // hop limit
+                 "fe80000000000000000000fffe001234" + // source
+                 "ff02000000000000000000abcdef1234" + // dest
+                 "abcdef01"                           // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 11, NH: 0, HLIM: 11, CID: 0, SAC: 0, SAM: 10, M: 1, DAC: 0, DAM: 10
+        input  = "7b2a" +
+                 "44" +                               // next header
+                 "1234" +                             // source
+                 "ee123456" +                         // dest
+                 "abcdef01"                           // payload
+
+        output = "6" +                                // version
+                 "00" +                               // traffic class
+                 "00000" +                            // flow label
+                 "0004" +                             // payload length
+                 "44" +                               // next header
+                 "ff" +                               // hop limit
+                 "fe80000000000000000000fffe001234" + // source
+                 "ffee0000000000000000000000123456" + // dest
+                 "abcdef01"                           // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+
+        // TF: 11, NH: 0, HLIM: 11, CID: 0, SAC: 0, SAM: 10, M: 1, DAC: 0, DAM: 11
+        input  = "7b2b" +
+                 "44" +                               // next header
+                 "1234" +                             // source
+                 "89" +                               // dest
+                 "abcdef01"                           // payload
+
+        output = "6" +                                // version
+                 "00" +                               // traffic class
+                 "00000" +                            // flow label
+                 "0004" +                             // payload length
+                 "44" +                               // next header
+                 "ff" +                               // hop limit
+                 "fe80000000000000000000fffe001234" + // source
+                 "ff020000000000000000000000000089" + // dest
+                 "abcdef01"                           // payload
+        assertThat(decompressHex(input)).isEqualTo(output.decodeHex())
+    }
+
+    @Test
+    fun testHeaderCompression() {
+        val input  = "60120304000011fffe800000000000000000000000000001fe800000000000000000000000000002"
+        val output = "60000102030411fffe800000000000000000000000000001fe800000000000000000000000000002"
+        assertThat(compressHex(input)).isEqualTo(output.decodeHex())
+    }
+}
diff --git a/tests/unit/java/com/android/server/net/L2capPacketForwarderTest.kt b/tests/unit/java/com/android/server/net/L2capPacketForwarderTest.kt
index b3095ee..e261732 100644
--- a/tests/unit/java/com/android/server/net/L2capPacketForwarderTest.kt
+++ b/tests/unit/java/com/android/server/net/L2capPacketForwarderTest.kt
@@ -184,6 +184,7 @@
                 handler,
                 FdWrapper(ParcelFileDescriptor(tunFds[0])),
                 BluetoothSocketWrapper(bluetoothSocket),
+                false /* compressHeaders */,
                 callback
         )
     }
diff --git a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
index b528480..581c709 100644
--- a/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/unit/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -168,7 +168,6 @@
 import com.android.net.module.util.Struct.U8;
 import com.android.net.module.util.bpf.CookieTagMapKey;
 import com.android.net.module.util.bpf.CookieTagMapValue;
-import com.android.server.BpfNetMaps;
 import com.android.server.connectivity.ConnectivityResources;
 import com.android.server.net.NetworkStatsService.AlertObserver;
 import com.android.server.net.NetworkStatsService.NetworkStatsSettings;
@@ -286,8 +285,6 @@
     private LocationPermissionChecker mLocationPermissionChecker;
     private TestBpfMap<S32, U8> mUidCounterSetMap = spy(new TestBpfMap<>(S32.class, U8.class));
     @Mock
-    private BpfNetMaps mBpfNetMaps;
-    @Mock
     private SkDestroyListener mSkDestroyListener;
 
     private TestBpfMap<CookieTagMapKey, CookieTagMapValue> mCookieTagMap = new TestBpfMap<>(
@@ -608,11 +605,6 @@
         }
 
         @Override
-        public BpfNetMaps makeBpfNetMaps(Context ctx) {
-            return mBpfNetMaps;
-        }
-
-        @Override
         public SkDestroyListener makeSkDestroyListener(
                 IBpfMap<CookieTagMapKey, CookieTagMapValue> cookieTagMap, Handler handler) {
             return mSkDestroyListener;
diff --git a/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java b/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
index d41550b..7a5895f 100644
--- a/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
+++ b/thread/tests/integration/src/android/net/thread/ThreadIntegrationTest.java
@@ -130,6 +130,7 @@
     public void setUp() throws Exception {
         mExecutor = Executors.newSingleThreadExecutor();
         mOtCtl = new OtDaemonController();
+        mController.setEnabledAndWait(true);
         mController.leaveAndWait();
 
         // TODO: b/323301831 - This is a workaround to avoid unnecessary delay to re-form a network