diff --git a/core/java/android/net/NetworkAgentConfig.java b/core/java/android/net/NetworkAgentConfig.java
index c29d23d..fe1268d 100644
--- a/core/java/android/net/NetworkAgentConfig.java
+++ b/core/java/android/net/NetworkAgentConfig.java
@@ -272,6 +272,7 @@
          * Sets the subscriber ID for this network.
          *
          * @return this builder, to facilitate chaining.
+         * @hide
          */
         @NonNull
         public Builder setSubscriberId(@Nullable String subscriberId) {
diff --git a/core/java/android/net/NetworkRequest.java b/core/java/android/net/NetworkRequest.java
index dc16d74..f0c637c 100644
--- a/core/java/android/net/NetworkRequest.java
+++ b/core/java/android/net/NetworkRequest.java
@@ -40,6 +40,18 @@
  */
 public class NetworkRequest implements Parcelable {
     /**
+     * The first requestId value that will be allocated.
+     * @hide only used by ConnectivityService.
+     */
+    public static final int FIRST_REQUEST_ID = 1;
+
+    /**
+     * The requestId value that represents the absence of a request.
+     * @hide only used by ConnectivityService.
+     */
+    public static final int REQUEST_ID_NONE = -1;
+
+    /**
      * The {@link NetworkCapabilities} that define this request.
      * @hide
      */
diff --git a/service/Android.bp b/service/Android.bp
index a26f715..c8f3bd3 100644
--- a/service/Android.bp
+++ b/service/Android.bp
@@ -14,8 +14,8 @@
 // limitations under the License.
 //
 
-cc_defaults {
-    name: "libservice-connectivity-defaults",
+cc_library_shared {
+    name: "libservice-connectivity",
     // TODO: build against the NDK (sdk_version: "30" for example)
     cflags: [
         "-Wall",
@@ -26,6 +26,7 @@
     srcs: [
         "jni/com_android_server_TestNetworkService.cpp",
         "jni/com_android_server_connectivity_Vpn.cpp",
+        "jni/onload.cpp",
     ],
     shared_libs: [
         "libbase",
@@ -35,27 +36,11 @@
         // addresses, and remove dependency on libnetutils.
         "libnetutils",
     ],
-}
-
-cc_library_shared {
-    name: "libservice-connectivity",
-    defaults: ["libservice-connectivity-defaults"],
-    srcs: [
-        "jni/onload.cpp",
-    ],
     apex_available: [
-        // TODO: move this library to the tethering APEX and remove libservice-connectivity-static
-        // "com.android.tethering",
+        "com.android.tethering",
     ],
 }
 
-// Static library linked into libservices.core until libservice-connectivity can be loaded from
-// the tethering APEX instead.
-cc_library_static {
-    name: "libservice-connectivity-static",
-    defaults: ["libservice-connectivity-defaults"],
-}
-
 java_library {
     name: "service-connectivity",
     srcs: [
@@ -75,5 +60,6 @@
     ],
     apex_available: [
         "//apex_available:platform",
+        "com.android.tethering",
     ],
 }
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 397eeb2..020c17a 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -620,7 +620,7 @@
     private LingerMonitor mLingerMonitor;
 
     // sequence number of NetworkRequests
-    private int mNextNetworkRequestId = 1;
+    private int mNextNetworkRequestId = NetworkRequest.FIRST_REQUEST_ID;
 
     // Sequence number for NetworkProvider IDs.
     private final AtomicInteger mNextNetworkProviderId = new AtomicInteger(
@@ -1238,6 +1238,8 @@
     }
 
     private synchronized int nextNetworkRequestId() {
+        // TODO: Consider handle wrapping and exclude {@link NetworkRequest#REQUEST_ID_NONE} if
+        //  doing that.
         return mNextNetworkRequestId++;
     }
 
@@ -1329,15 +1331,20 @@
     /**
      * Check if UID should be blocked from using the specified network.
      */
-    private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid,
-            boolean ignoreBlocked) {
+    private boolean isNetworkWithCapabilitiesBlocked(@Nullable final NetworkCapabilities nc,
+            final int uid, final boolean ignoreBlocked) {
         // Networks aren't blocked when ignoring blocked status
         if (ignoreBlocked) {
             return false;
         }
         if (isUidBlockedByVpn(uid, mVpnBlockedUidRanges)) return true;
-        final String iface = (lp == null ? "" : lp.getInterfaceName());
-        return mPolicyManagerInternal.isUidNetworkingBlocked(uid, iface);
+        final long ident = Binder.clearCallingIdentity();
+        try {
+            final boolean metered = nc == null ? true : nc.isMetered();
+            return mPolicyManager.isUidNetworkingBlocked(uid, metered);
+        } finally {
+            Binder.restoreCallingIdentity(ident);
+        }
     }
 
     private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) {
@@ -1375,12 +1382,13 @@
     /**
      * Apply any relevant filters to {@link NetworkState} for the given UID. For
      * example, this may mark the network as {@link DetailedState#BLOCKED} based
-     * on {@link #isNetworkWithLinkPropertiesBlocked}.
+     * on {@link #isNetworkWithCapabilitiesBlocked}.
      */
     private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) {
         if (state == null || state.networkInfo == null || state.linkProperties == null) return;
 
-        if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) {
+        if (isNetworkWithCapabilitiesBlocked(state.networkCapabilities, uid,
+                ignoreBlocked)) {
             state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null);
         }
         synchronized (mVpns) {
@@ -1440,8 +1448,8 @@
             }
         }
         nai = getDefaultNetwork();
-        if (nai != null
-                && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) {
+        if (nai != null && isNetworkWithCapabilitiesBlocked(
+                nai.networkCapabilities, uid, ignoreBlocked)) {
             nai = null;
         }
         return nai != null ? nai.network : null;
@@ -1513,7 +1521,7 @@
         enforceAccessPermission();
         final int uid = mDeps.getCallingUid();
         NetworkState state = getFilteredNetworkState(networkType, uid);
-        if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) {
+        if (!isNetworkWithCapabilitiesBlocked(state.networkCapabilities, uid, false)) {
             return state.network;
         }
         return null;
@@ -4471,7 +4479,8 @@
         if (!nai.everConnected) {
             return;
         }
-        if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, false)) {
+        final NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai);
+        if (isNetworkWithCapabilitiesBlocked(nc, uid, false)) {
             return;
         }
         nai.networkMonitor().forceReevaluation(uid);
@@ -7065,11 +7074,11 @@
                     log("   accepting network in place of " + previousSatisfier.toShortString());
                 }
                 previousSatisfier.removeRequest(nri.request.requestId);
-                previousSatisfier.lingerRequest(nri.request, now, mLingerDelayMs);
+                previousSatisfier.lingerRequest(nri.request.requestId, now, mLingerDelayMs);
             } else {
                 if (VDBG || DDBG) log("   accepting network in place of null");
             }
-            newSatisfier.unlingerRequest(nri.request);
+            newSatisfier.unlingerRequest(nri.request.requestId);
             if (!newSatisfier.addRequest(nri.request)) {
                 Log.wtf(TAG, "BUG: " + newSatisfier.toShortString() + " already has "
                         + nri.request);
diff --git a/services/core/java/com/android/server/ConnectivityServiceInitializer.java b/services/core/java/com/android/server/ConnectivityServiceInitializer.java
index f701688..0779f71 100644
--- a/services/core/java/com/android/server/ConnectivityServiceInitializer.java
+++ b/services/core/java/com/android/server/ConnectivityServiceInitializer.java
@@ -35,6 +35,8 @@
 
     public ConnectivityServiceInitializer(Context context) {
         super(context);
+        // Load JNI libraries used by ConnectivityService and its dependencies
+        System.loadLibrary("service-connectivity");
         // TODO: Define formal APIs to get the needed services.
         mConnectivity = new ConnectivityService(context, getNetworkManagementService(),
                 getNetworkStatsService());
diff --git a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
index 7bde4d5..55d8279 100644
--- a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
@@ -202,28 +202,28 @@
     // either the linger timeout expiring and the network being taken down, or the network
     // satisfying a request again.
     public static class LingerTimer implements Comparable<LingerTimer> {
-        public final NetworkRequest request;
+        public final int requestId;
         public final long expiryMs;
 
-        public LingerTimer(NetworkRequest request, long expiryMs) {
-            this.request = request;
+        public LingerTimer(int requestId, long expiryMs) {
+            this.requestId = requestId;
             this.expiryMs = expiryMs;
         }
         public boolean equals(Object o) {
             if (!(o instanceof LingerTimer)) return false;
             LingerTimer other = (LingerTimer) o;
-            return (request.requestId == other.request.requestId) && (expiryMs == other.expiryMs);
+            return (requestId == other.requestId) && (expiryMs == other.expiryMs);
         }
         public int hashCode() {
-            return Objects.hash(request.requestId, expiryMs);
+            return Objects.hash(requestId, expiryMs);
         }
         public int compareTo(LingerTimer other) {
             return (expiryMs != other.expiryMs) ?
                     Long.compare(expiryMs, other.expiryMs) :
-                    Integer.compare(request.requestId, other.request.requestId);
+                    Integer.compare(requestId, other.requestId);
         }
         public String toString() {
-            return String.format("%s, expires %dms", request.toString(),
+            return String.format("%s, expires %dms", requestId,
                     expiryMs - SystemClock.elapsedRealtime());
         }
     }
@@ -693,7 +693,7 @@
         updateRequestCounts(REMOVE, existing);
         mNetworkRequests.remove(requestId);
         if (existing.isRequest()) {
-            unlingerRequest(existing);
+            unlingerRequest(existing.requestId);
         }
     }
 
@@ -839,33 +839,33 @@
     }
 
     /**
-     * Sets the specified request to linger on this network for the specified time. Called by
+     * Sets the specified requestId to linger on this network for the specified time. Called by
      * ConnectivityService when the request is moved to another network with a higher score.
      */
-    public void lingerRequest(NetworkRequest request, long now, long duration) {
-        if (mLingerTimerForRequest.get(request.requestId) != null) {
+    public void lingerRequest(int requestId, long now, long duration) {
+        if (mLingerTimerForRequest.get(requestId) != null) {
             // Cannot happen. Once a request is lingering on a particular network, we cannot
             // re-linger it unless that network becomes the best for that request again, in which
             // case we should have unlingered it.
-            Log.wtf(TAG, toShortString() + ": request " + request.requestId + " already lingered");
+            Log.wtf(TAG, toShortString() + ": request " + requestId + " already lingered");
         }
         final long expiryMs = now + duration;
-        LingerTimer timer = new LingerTimer(request, expiryMs);
+        LingerTimer timer = new LingerTimer(requestId, expiryMs);
         if (VDBG) Log.d(TAG, "Adding LingerTimer " + timer + " to " + toShortString());
         mLingerTimers.add(timer);
-        mLingerTimerForRequest.put(request.requestId, timer);
+        mLingerTimerForRequest.put(requestId, timer);
     }
 
     /**
      * Cancel lingering. Called by ConnectivityService when a request is added to this network.
-     * Returns true if the given request was lingering on this network, false otherwise.
+     * Returns true if the given requestId was lingering on this network, false otherwise.
      */
-    public boolean unlingerRequest(NetworkRequest request) {
-        LingerTimer timer = mLingerTimerForRequest.get(request.requestId);
+    public boolean unlingerRequest(int requestId) {
+        LingerTimer timer = mLingerTimerForRequest.get(requestId);
         if (timer != null) {
             if (VDBG) Log.d(TAG, "Removing LingerTimer " + timer + " from " + toShortString());
             mLingerTimers.remove(timer);
-            mLingerTimerForRequest.remove(request.requestId);
+            mLingerTimerForRequest.remove(requestId);
             return true;
         }
         return false;
diff --git a/tests/net/Android.bp b/tests/net/Android.bp
index a762219..f6a2846 100644
--- a/tests/net/Android.bp
+++ b/tests/net/Android.bp
@@ -70,4 +70,7 @@
         "android.test.base",
         "android.test.mock",
     ],
+    jni_libs: [
+        "libservice-connectivity",
+    ],
 }
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index 4c1a516..24b1343 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -3626,51 +3626,55 @@
         // Register the factory and expect it to start looking for a network.
         testFactory.expectAddRequestsWithScores(0);  // Score 0 as the request is not served yet.
         testFactory.register();
-        testFactory.waitForNetworkRequests(1);
-        assertTrue(testFactory.getMyStartRequested());
 
-        // Bring up wifi. The factory stops looking for a network.
-        mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
-        // Score 60 - 40 penalty for not validated yet, then 60 when it validates
-        testFactory.expectAddRequestsWithScores(20, 60);
-        mWiFiNetworkAgent.connect(true);
-        testFactory.waitForRequests();
-        assertFalse(testFactory.getMyStartRequested());
+        try {
+            testFactory.waitForNetworkRequests(1);
+            assertTrue(testFactory.getMyStartRequested());
 
-        ContentResolver cr = mServiceContext.getContentResolver();
+            // Bring up wifi. The factory stops looking for a network.
+            mWiFiNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_WIFI);
+            // Score 60 - 40 penalty for not validated yet, then 60 when it validates
+            testFactory.expectAddRequestsWithScores(20, 60);
+            mWiFiNetworkAgent.connect(true);
+            testFactory.waitForRequests();
+            assertFalse(testFactory.getMyStartRequested());
 
-        // Turn on mobile data always on. The factory starts looking again.
-        testFactory.expectAddRequestsWithScores(0);  // Always on requests comes up with score 0
-        setAlwaysOnNetworks(true);
-        testFactory.waitForNetworkRequests(2);
-        assertTrue(testFactory.getMyStartRequested());
+            ContentResolver cr = mServiceContext.getContentResolver();
 
-        // Bring up cell data and check that the factory stops looking.
-        assertLength(1, mCm.getAllNetworks());
-        mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
-        testFactory.expectAddRequestsWithScores(10, 50);  // Unvalidated, then validated
-        mCellNetworkAgent.connect(true);
-        cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
-        testFactory.waitForNetworkRequests(2);
-        assertFalse(testFactory.getMyStartRequested());  // Because the cell network outscores us.
+            // Turn on mobile data always on. The factory starts looking again.
+            testFactory.expectAddRequestsWithScores(0);  // Always on requests comes up with score 0
+            setAlwaysOnNetworks(true);
+            testFactory.waitForNetworkRequests(2);
+            assertTrue(testFactory.getMyStartRequested());
 
-        // Check that cell data stays up.
-        waitForIdle();
-        verifyActiveNetwork(TRANSPORT_WIFI);
-        assertLength(2, mCm.getAllNetworks());
+            // Bring up cell data and check that the factory stops looking.
+            assertLength(1, mCm.getAllNetworks());
+            mCellNetworkAgent = new TestNetworkAgentWrapper(TRANSPORT_CELLULAR);
+            testFactory.expectAddRequestsWithScores(10, 50);  // Unvalidated, then validated
+            mCellNetworkAgent.connect(true);
+            cellNetworkCallback.expectAvailableThenValidatedCallbacks(mCellNetworkAgent);
+            testFactory.waitForNetworkRequests(2);
+            assertFalse(
+                    testFactory.getMyStartRequested());  // Because the cell network outscores us.
 
-        // Turn off mobile data always on and expect the request to disappear...
-        testFactory.expectRemoveRequests(1);
-        setAlwaysOnNetworks(false);
-        testFactory.waitForNetworkRequests(1);
+            // Check that cell data stays up.
+            waitForIdle();
+            verifyActiveNetwork(TRANSPORT_WIFI);
+            assertLength(2, mCm.getAllNetworks());
 
-        // ...  and cell data to be torn down.
-        cellNetworkCallback.expectCallback(CallbackEntry.LOST, mCellNetworkAgent);
-        assertLength(1, mCm.getAllNetworks());
+            // Turn off mobile data always on and expect the request to disappear...
+            testFactory.expectRemoveRequests(1);
+            setAlwaysOnNetworks(false);
+            testFactory.waitForNetworkRequests(1);
 
-        testFactory.terminate();
-        mCm.unregisterNetworkCallback(cellNetworkCallback);
-        handlerThread.quit();
+            // ...  and cell data to be torn down.
+            cellNetworkCallback.expectCallback(CallbackEntry.LOST, mCellNetworkAgent);
+            assertLength(1, mCm.getAllNetworks());
+        } finally {
+            testFactory.terminate();
+            mCm.unregisterNetworkCallback(cellNetworkCallback);
+            handlerThread.quit();
+        }
     }
 
     @Test
diff --git a/tests/net/java/com/android/server/net/NetworkStatsCollectionTest.java b/tests/net/java/com/android/server/net/NetworkStatsCollectionTest.java
index 89146f9..435c3c0 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsCollectionTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsCollectionTest.java
@@ -64,7 +64,6 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
-import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.InputStream;
@@ -124,7 +123,7 @@
 
         // now export into a unified format
         final ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        collection.write(new DataOutputStream(bos));
+        collection.write(bos);
 
         // clear structure completely
         collection.reset();
@@ -152,7 +151,7 @@
 
         // now export into a unified format
         final ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        collection.write(new DataOutputStream(bos));
+        collection.write(bos);
 
         // clear structure completely
         collection.reset();
@@ -180,7 +179,7 @@
 
         // now export into a unified format
         final ByteArrayOutputStream bos = new ByteArrayOutputStream();
-        collection.write(new DataOutputStream(bos));
+        collection.write(bos);
 
         // clear structure completely
         collection.reset();