diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index a69ca99..fbfbfc0 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -3449,6 +3449,11 @@
             final NetworkCallback callback;
             synchronized (sCallbacks) {
                 callback = sCallbacks.get(request);
+                if (callback == null) {
+                    Log.w(TAG,
+                            "callback not found for " + getCallbackName(message.what) + " message");
+                    return;
+                }
                 if (message.what == CALLBACK_UNAVAIL) {
                     sCallbacks.remove(request);
                     callback.networkRequest = ALREADY_UNREGISTERED;
@@ -3457,10 +3462,6 @@
             if (DBG) {
                 Log.d(TAG, getCallbackName(message.what) + " for network " + network);
             }
-            if (callback == null) {
-                Log.w(TAG, "callback not found for " + getCallbackName(message.what) + " message");
-                return;
-            }
 
             switch (message.what) {
                 case CALLBACK_PRECHECK: {
@@ -3612,8 +3613,9 @@
      * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note
      *                        the callback must not be shared - it uniquely specifies this request.
      *                        The callback is invoked on the default internal Handler.
-     * @throws IllegalArgumentException if {@code request} specifies any mutable
-     *         {@code NetworkCapabilities}.
+     * @throws IllegalArgumentException if {@code request} contains invalid network capabilities.
+     * @throws SecurityException if missing the appropriate permissions.
+     * @throws RuntimeException if request limit per UID is exceeded.
      */
     public void requestNetwork(@NonNull NetworkRequest request,
             @NonNull NetworkCallback networkCallback) {
@@ -3648,8 +3650,9 @@
      * @param networkCallback The {@link NetworkCallback} to be utilized for this request. Note
      *                        the callback must not be shared - it uniquely specifies this request.
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
-     * @throws IllegalArgumentException if {@code request} specifies any mutable
-     *         {@code NetworkCapabilities}.
+     * @throws IllegalArgumentException if {@code request} contains invalid network capabilities.
+     * @throws SecurityException if missing the appropriate permissions.
+     * @throws RuntimeException if request limit per UID is exceeded.
      */
     public void requestNetwork(@NonNull NetworkRequest request,
             @NonNull NetworkCallback networkCallback, @NonNull Handler handler) {
@@ -3685,6 +3688,9 @@
      * @param timeoutMs The time in milliseconds to attempt looking for a suitable network
      *                  before {@link NetworkCallback#onUnavailable()} is called. The timeout must
      *                  be a positive value (i.e. >0).
+     * @throws IllegalArgumentException if {@code request} contains invalid network capabilities.
+     * @throws SecurityException if missing the appropriate permissions.
+     * @throws RuntimeException if request limit per UID is exceeded.
      */
     public void requestNetwork(@NonNull NetworkRequest request,
             @NonNull NetworkCallback networkCallback, int timeoutMs) {
@@ -3719,6 +3725,9 @@
      * @param handler {@link Handler} to specify the thread upon which the callback will be invoked.
      * @param timeoutMs The time in milliseconds to attempt looking for a suitable network
      *                  before {@link NetworkCallback#onUnavailable} is called.
+     * @throws IllegalArgumentException if {@code request} contains invalid network capabilities.
+     * @throws SecurityException if missing the appropriate permissions.
+     * @throws RuntimeException if request limit per UID is exceeded.
      */
     public void requestNetwork(@NonNull NetworkRequest request,
             @NonNull NetworkCallback networkCallback, @NonNull Handler handler, int timeoutMs) {
@@ -3789,9 +3798,9 @@
      * @param operation Action to perform when the network is available (corresponds
      *                  to the {@link NetworkCallback#onAvailable} call.  Typically
      *                  comes from {@link PendingIntent#getBroadcast}. Cannot be null.
-     * @throws IllegalArgumentException if {@code request} contains either
-     *         {@link NetworkCapabilities#NET_CAPABILITY_VALIDATED} or
-     *         {@link NetworkCapabilities#NET_CAPABILITY_CAPTIVE_PORTAL}.
+     * @throws IllegalArgumentException if {@code request} contains invalid network capabilities.
+     * @throws SecurityException if missing the appropriate permissions.
+     * @throws RuntimeException if request limit per UID is exceeded.
      */
     public void requestNetwork(@NonNull NetworkRequest request,
             @NonNull PendingIntent operation) {
diff --git a/core/java/android/net/StaticIpConfiguration.java b/core/java/android/net/StaticIpConfiguration.java
index 87f8739..fe42111 100644
--- a/core/java/android/net/StaticIpConfiguration.java
+++ b/core/java/android/net/StaticIpConfiguration.java
@@ -58,15 +58,15 @@
     @Nullable
     public LinkAddress ipAddress;
     /** @hide */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
+    @UnsupportedAppUsage
     @Nullable
     public InetAddress gateway;
     /** @hide */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
+    @UnsupportedAppUsage
     @NonNull
     public final ArrayList<InetAddress> dnsServers;
     /** @hide */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P)
+    @UnsupportedAppUsage
     @Nullable
     public String domains;
 
diff --git a/tests/net/Android.bp b/tests/net/Android.bp
index 1fbb658..306cc51 100644
--- a/tests/net/Android.bp
+++ b/tests/net/Android.bp
@@ -56,7 +56,7 @@
         "libutilscallstack",
         "libziparchive",
         "libz",
-        "netd_aidl_interface-cpp",
+        "netd_aidl_interface-V2-cpp",
         "libnetworkstatsfactorytestjni",
     ],
 }
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index b0cc207..fa059fa 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -3816,11 +3816,20 @@
         networkCallback.assertNoCallback();
     }
 
+    @Test
+    public void testUnfulfillableNetworkRequest() throws Exception {
+        runUnfulfillableNetworkRequest(false);
+    }
+
+    @Test
+    public void testUnfulfillableNetworkRequestAfterUnregister() throws Exception {
+        runUnfulfillableNetworkRequest(true);
+    }
+
     /**
      * Validate the callback flow for a factory releasing a request as unfulfillable.
      */
-    @Test
-    public void testUnfulfillableNetworkRequest() throws Exception {
+    private void runUnfulfillableNetworkRequest(boolean preUnregister) throws Exception {
         NetworkRequest nr = new NetworkRequest.Builder().addTransportType(
                 NetworkCapabilities.TRANSPORT_WIFI).build();
         final TestNetworkCallback networkCallback = new TestNetworkCallback();
@@ -3855,14 +3864,25 @@
             }
         }
 
-        // Simulate the factory releasing the request as unfulfillable and expect onUnavailable!
         testFactory.expectRemoveRequests(1);
-        testFactory.triggerUnfulfillable(requests.get(newRequestId));
-        networkCallback.expectCallback(CallbackState.UNAVAILABLE, null);
-        testFactory.waitForRequests();
+        if (preUnregister) {
+            mCm.unregisterNetworkCallback(networkCallback);
 
-        // unregister network callback - a no-op, but should not fail
-        mCm.unregisterNetworkCallback(networkCallback);
+            // Simulate the factory releasing the request as unfulfillable: no-op since
+            // the callback has already been unregistered (but a test that no exceptions are
+            // thrown).
+            testFactory.triggerUnfulfillable(requests.get(newRequestId));
+        } else {
+            // Simulate the factory releasing the request as unfulfillable and expect onUnavailable!
+            testFactory.triggerUnfulfillable(requests.get(newRequestId));
+
+            networkCallback.expectCallback(CallbackState.UNAVAILABLE, null);
+            testFactory.waitForRequests();
+
+            // unregister network callback - a no-op (since already freed by the
+            // on-unavailable), but should not fail or throw exceptions.
+            mCm.unregisterNetworkCallback(networkCallback);
+        }
 
         testFactory.unregister();
         handlerThread.quit();