diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 552331e..e4eb585 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -18,6 +18,14 @@
 
 import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_PROBES_ATTEMPTED_BITMASK;
+import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_PROBES_SUCCEEDED_BITMASK;
+import static android.net.ConnectivityDiagnosticsManager.ConnectivityReport.KEY_NETWORK_VALIDATION_RESULT;
+import static android.net.ConnectivityDiagnosticsManager.DataStallReport.DETECTION_METHOD_DNS_EVENTS;
+import static android.net.ConnectivityDiagnosticsManager.DataStallReport.DETECTION_METHOD_TCP_METRICS;
+import static android.net.ConnectivityDiagnosticsManager.DataStallReport.KEY_DNS_CONSECUTIVE_TIMEOUTS;
+import static android.net.ConnectivityDiagnosticsManager.DataStallReport.KEY_TCP_METRICS_COLLECTION_PERIOD_MILLIS;
+import static android.net.ConnectivityDiagnosticsManager.DataStallReport.KEY_TCP_PACKET_FAIL_RATE;
 import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
 import static android.net.ConnectivityManager.NETID_UNSET;
 import static android.net.ConnectivityManager.PRIVATE_DNS_MODE_OPPORTUNISTIC;
@@ -72,6 +80,7 @@
 import android.net.ConnectivityDiagnosticsManager.ConnectivityReport;
 import android.net.ConnectivityDiagnosticsManager.DataStallReport;
 import android.net.ConnectivityManager;
+import android.net.DataStallReportParcelable;
 import android.net.ICaptivePortal;
 import android.net.IConnectivityDiagnosticsCallback;
 import android.net.IConnectivityManager;
@@ -108,6 +117,7 @@
 import android.net.NetworkStack;
 import android.net.NetworkStackClient;
 import android.net.NetworkState;
+import android.net.NetworkTestResultParcelable;
 import android.net.NetworkUtils;
 import android.net.NetworkWatchlistManager;
 import android.net.PrivateDnsConfigParcel;
@@ -2820,14 +2830,6 @@
 
                     handleNetworkTested(nai, results.mTestResult,
                             (results.mRedirectUrl == null) ? "" : results.mRedirectUrl);
-
-                    // Invoke ConnectivityReport generation for this Network test event.
-                    final Message m =
-                            mConnectivityDiagnosticsHandler.obtainMessage(
-                                    ConnectivityDiagnosticsHandler.EVENT_NETWORK_TESTED,
-                                    new ConnectivityReportEvent(results.mTimestampMillis, nai));
-                    m.setData(msg.getData());
-                    mConnectivityDiagnosticsHandler.sendMessage(m);
                     break;
                 }
                 case EVENT_PROVISIONING_NOTIFICATION: {
@@ -3006,23 +3008,33 @@
 
         @Override
         public void notifyNetworkTested(int testResult, @Nullable String redirectUrl) {
-            notifyNetworkTestedWithExtras(testResult, redirectUrl, SystemClock.elapsedRealtime(),
-                    PersistableBundle.EMPTY);
+            // Legacy version of notifyNetworkTestedWithExtras.
+            // Would only be called if the system has a NetworkStack module older than the
+            // framework, which does not happen in practice.
         }
 
         @Override
-        public void notifyNetworkTestedWithExtras(
-                int testResult,
-                @Nullable String redirectUrl,
-                long timestampMillis,
-                @NonNull PersistableBundle extras) {
-            final Message msg =
-                    mTrackerHandler.obtainMessage(
-                            EVENT_NETWORK_TESTED,
-                            new NetworkTestedResults(
-                                    mNetId, testResult, timestampMillis, redirectUrl));
-            msg.setData(new Bundle(extras));
+        public void notifyNetworkTestedWithExtras(NetworkTestResultParcelable p) {
+            final Message msg = mTrackerHandler.obtainMessage(
+                    EVENT_NETWORK_TESTED,
+                    new NetworkTestedResults(
+                            mNetId, p.result, p.timestampMillis, p.redirectUrl));
             mTrackerHandler.sendMessage(msg);
+
+            // Invoke ConnectivityReport generation for this Network test event.
+            final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(mNetId);
+            if (nai == null) return;
+            final Message m = mConnectivityDiagnosticsHandler.obtainMessage(
+                    ConnectivityDiagnosticsHandler.EVENT_NETWORK_TESTED,
+                    new ConnectivityReportEvent(p.timestampMillis, nai));
+
+            final PersistableBundle extras = new PersistableBundle();
+            extras.putInt(KEY_NETWORK_VALIDATION_RESULT, p.result);
+            extras.putInt(KEY_NETWORK_PROBES_SUCCEEDED_BITMASK, p.probesSucceeded);
+            extras.putInt(KEY_NETWORK_PROBES_ATTEMPTED_BITMASK, p.probesAttempted);
+
+            m.setData(new Bundle(extras));
+            mConnectivityDiagnosticsHandler.sendMessage(m);
         }
 
         @Override
@@ -3071,12 +3083,25 @@
         }
 
         @Override
-        public void notifyDataStallSuspected(
-                long timestampMillis, int detectionMethod, PersistableBundle extras) {
-            final Message msg =
-                    mConnectivityDiagnosticsHandler.obtainMessage(
-                            ConnectivityDiagnosticsHandler.EVENT_DATA_STALL_SUSPECTED,
-                            detectionMethod, mNetId, timestampMillis);
+        public void notifyDataStallSuspected(DataStallReportParcelable p) {
+            final Message msg = mConnectivityDiagnosticsHandler.obtainMessage(
+                    ConnectivityDiagnosticsHandler.EVENT_DATA_STALL_SUSPECTED,
+                    p.detectionMethod, mNetId, p.timestampMillis);
+
+            final PersistableBundle extras = new PersistableBundle();
+            switch (p.detectionMethod) {
+                case DETECTION_METHOD_DNS_EVENTS:
+                    extras.putInt(KEY_DNS_CONSECUTIVE_TIMEOUTS, p.dnsConsecutiveTimeouts);
+                    break;
+                case DETECTION_METHOD_TCP_METRICS:
+                    extras.putInt(KEY_TCP_PACKET_FAIL_RATE, p.tcpPacketFailRate);
+                    extras.putInt(KEY_TCP_METRICS_COLLECTION_PERIOD_MILLIS,
+                            p.tcpMetricsCollectionPeriodMillis);
+                    break;
+                default:
+                    log("Unknown data stall detection method, ignoring: " + p.detectionMethod);
+                    return;
+            }
             msg.setData(new Bundle(extras));
 
             // NetworkStateTrackerHandler currently doesn't take any actions based on data
diff --git a/tests/net/java/android/net/Ikev2VpnProfileTest.java b/tests/net/java/android/net/Ikev2VpnProfileTest.java
index 2273bc6..ada5494 100644
--- a/tests/net/java/android/net/Ikev2VpnProfileTest.java
+++ b/tests/net/java/android/net/Ikev2VpnProfileTest.java
@@ -40,7 +40,10 @@
 import java.security.KeyPairGenerator;
 import java.security.PrivateKey;
 import java.security.cert.X509Certificate;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Date;
+import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 import javax.security.auth.x500.X500Principal;
@@ -106,6 +109,7 @@
         assertTrue(profile.isBypassable());
         assertTrue(profile.isMetered());
         assertEquals(TEST_MTU, profile.getMaxMtu());
+        assertEquals(Ikev2VpnProfile.DEFAULT_ALGORITHMS, profile.getAllowedAlgorithms());
     }
 
     @Test
@@ -160,6 +164,78 @@
     }
 
     @Test
+    public void testBuildWithAllowedAlgorithmsAead() throws Exception {
+        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
+        builder.setAuthPsk(PSK_BYTES);
+
+        List<String> allowedAlgorithms = Arrays.asList(IpSecAlgorithm.AUTH_CRYPT_AES_GCM);
+        builder.setAllowedAlgorithms(allowedAlgorithms);
+
+        final Ikev2VpnProfile profile = builder.build();
+        assertEquals(allowedAlgorithms, profile.getAllowedAlgorithms());
+    }
+
+    @Test
+    public void testBuildWithAllowedAlgorithmsNormal() throws Exception {
+        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
+        builder.setAuthPsk(PSK_BYTES);
+
+        List<String> allowedAlgorithms =
+                Arrays.asList(IpSecAlgorithm.AUTH_HMAC_SHA512, IpSecAlgorithm.CRYPT_AES_CBC);
+        builder.setAllowedAlgorithms(allowedAlgorithms);
+
+        final Ikev2VpnProfile profile = builder.build();
+        assertEquals(allowedAlgorithms, profile.getAllowedAlgorithms());
+    }
+
+    @Test
+    public void testSetAllowedAlgorithmsEmptyList() throws Exception {
+        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
+
+        try {
+            builder.setAllowedAlgorithms(new ArrayList<>());
+            fail("Expected exception due to no valid algorithm set");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testSetAllowedAlgorithmsInvalidList() throws Exception {
+        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
+        List<String> allowedAlgorithms = new ArrayList<>();
+
+        try {
+            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_SHA256));
+            fail("Expected exception due to missing encryption");
+        } catch (IllegalArgumentException expected) {
+        }
+
+        try {
+            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.CRYPT_AES_CBC));
+            fail("Expected exception due to missing authentication");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
+    public void testSetAllowedAlgorithmsInsecureAlgorithm() throws Exception {
+        final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
+        List<String> allowedAlgorithms = new ArrayList<>();
+
+        try {
+            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_MD5));
+            fail("Expected exception due to insecure algorithm");
+        } catch (IllegalArgumentException expected) {
+        }
+
+        try {
+            builder.setAllowedAlgorithms(Arrays.asList(IpSecAlgorithm.AUTH_HMAC_SHA1));
+            fail("Expected exception due to insecure algorithm");
+        } catch (IllegalArgumentException expected) {
+        }
+    }
+
+    @Test
     public void testBuildNoAuthMethodSet() throws Exception {
         final Ikev2VpnProfile.Builder builder = getBuilderWithDefaultOptions();
 
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index a478e68..a992778 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -144,6 +144,7 @@
 import android.net.ConnectivityManager.PacketKeepaliveCallback;
 import android.net.ConnectivityManager.TooManyRequestsException;
 import android.net.ConnectivityThread;
+import android.net.DataStallReportParcelable;
 import android.net.IConnectivityDiagnosticsCallback;
 import android.net.IDnsResolver;
 import android.net.IIpConnectivityMetrics;
@@ -170,6 +171,7 @@
 import android.net.NetworkStack;
 import android.net.NetworkStackClient;
 import android.net.NetworkState;
+import android.net.NetworkTestResultParcelable;
 import android.net.NetworkUtils;
 import android.net.ProxyInfo;
 import android.net.ResolverParamsParcel;
@@ -196,7 +198,6 @@
 import android.os.Parcel;
 import android.os.ParcelFileDescriptor;
 import android.os.Parcelable;
-import android.os.PersistableBundle;
 import android.os.Process;
 import android.os.RemoteException;
 import android.os.SystemClock;
@@ -580,14 +581,6 @@
     }
 
     private class TestNetworkAgentWrapper extends NetworkAgentWrapper {
-        private static final int VALIDATION_RESULT_BASE = NETWORK_VALIDATION_PROBE_DNS
-                | NETWORK_VALIDATION_PROBE_HTTP
-                | NETWORK_VALIDATION_PROBE_HTTPS;
-        private static final int VALIDATION_RESULT_VALID = VALIDATION_RESULT_BASE
-                | NETWORK_VALIDATION_RESULT_VALID;
-        private static final int VALIDATION_RESULT_PARTIAL = VALIDATION_RESULT_BASE
-                | NETWORK_VALIDATION_PROBE_FALLBACK
-                | NETWORK_VALIDATION_RESULT_PARTIAL;
         private static final int VALIDATION_RESULT_INVALID = 0;
 
         private static final long DATA_STALL_TIMESTAMP = 10L;
@@ -595,12 +588,10 @@
 
         private INetworkMonitor mNetworkMonitor;
         private INetworkMonitorCallbacks mNmCallbacks;
-        private int mNmValidationResult = VALIDATION_RESULT_BASE;
+        private int mNmValidationResult = VALIDATION_RESULT_INVALID;
         private int mProbesCompleted;
         private int mProbesSucceeded;
         private String mNmValidationRedirectUrl = null;
-        private PersistableBundle mValidationExtras = PersistableBundle.EMPTY;
-        private PersistableBundle mDataStallExtras = PersistableBundle.EMPTY;
         private boolean mNmProvNotificationRequested = false;
 
         private final ConditionVariable mNetworkStatusReceived = new ConditionVariable();
@@ -668,8 +659,13 @@
             }
 
             mNmCallbacks.notifyProbeStatusChanged(mProbesCompleted, mProbesSucceeded);
-            mNmCallbacks.notifyNetworkTestedWithExtras(
-                    mNmValidationResult, mNmValidationRedirectUrl, TIMESTAMP, mValidationExtras);
+            final NetworkTestResultParcelable p = new NetworkTestResultParcelable();
+            p.result = mNmValidationResult;
+            p.probesAttempted = mProbesCompleted;
+            p.probesSucceeded = mProbesSucceeded;
+            p.redirectUrl = mNmValidationRedirectUrl;
+            p.timestampMillis = TIMESTAMP;
+            mNmCallbacks.notifyNetworkTestedWithExtras(p);
 
             if (mNmValidationRedirectUrl != null) {
                 mNmCallbacks.showProvisioningNotification(
@@ -751,9 +747,9 @@
         }
 
         void setNetworkValid(boolean isStrictMode) {
-            mNmValidationResult = VALIDATION_RESULT_VALID;
+            mNmValidationResult = NETWORK_VALIDATION_RESULT_VALID;
             mNmValidationRedirectUrl = null;
-            int probesSucceeded = VALIDATION_RESULT_BASE & ~NETWORK_VALIDATION_PROBE_HTTP;
+            int probesSucceeded = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTPS;
             if (isStrictMode) {
                 probesSucceeded |= NETWORK_VALIDATION_PROBE_PRIVDNS;
             }
@@ -765,8 +761,9 @@
         void setNetworkInvalid(boolean isStrictMode) {
             mNmValidationResult = VALIDATION_RESULT_INVALID;
             mNmValidationRedirectUrl = null;
-            int probesCompleted = VALIDATION_RESULT_BASE;
-            int probesSucceeded = VALIDATION_RESULT_INVALID;
+            int probesCompleted = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTPS
+                    | NETWORK_VALIDATION_PROBE_HTTP;
+            int probesSucceeded = 0;
             // If the isStrictMode is true, it means the network is invalid when NetworkMonitor
             // tried to validate the private DNS but failed.
             if (isStrictMode) {
@@ -782,7 +779,7 @@
             mNmValidationRedirectUrl = redirectUrl;
             // Suppose the portal is found when NetworkMonitor probes NETWORK_VALIDATION_PROBE_HTTP
             // in the beginning, so the NETWORK_VALIDATION_PROBE_HTTPS hasn't probed yet.
-            int probesCompleted = VALIDATION_RESULT_BASE & ~NETWORK_VALIDATION_PROBE_HTTPS;
+            int probesCompleted = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTP;
             int probesSucceeded = VALIDATION_RESULT_INVALID;
             if (isStrictMode) {
                 probesCompleted |= NETWORK_VALIDATION_PROBE_PRIVDNS;
@@ -791,18 +788,20 @@
         }
 
         void setNetworkPartial() {
-            mNmValidationResult = VALIDATION_RESULT_PARTIAL;
+            mNmValidationResult = NETWORK_VALIDATION_RESULT_PARTIAL;
             mNmValidationRedirectUrl = null;
-            int probesCompleted = VALIDATION_RESULT_BASE;
-            int probesSucceeded = VALIDATION_RESULT_BASE & ~NETWORK_VALIDATION_PROBE_HTTPS;
+            int probesCompleted = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTPS
+                    | NETWORK_VALIDATION_PROBE_FALLBACK;
+            int probesSucceeded = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_FALLBACK;
             setProbesStatus(probesCompleted, probesSucceeded);
         }
 
         void setNetworkPartialValid(boolean isStrictMode) {
             setNetworkPartial();
-            mNmValidationResult |= VALIDATION_RESULT_VALID;
-            int probesCompleted = VALIDATION_RESULT_BASE;
-            int probesSucceeded = VALIDATION_RESULT_BASE & ~NETWORK_VALIDATION_PROBE_HTTPS;
+            mNmValidationResult |= NETWORK_VALIDATION_RESULT_VALID;
+            int probesCompleted = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTPS
+                    | NETWORK_VALIDATION_PROBE_HTTP;
+            int probesSucceeded = NETWORK_VALIDATION_PROBE_DNS | NETWORK_VALIDATION_PROBE_HTTP;
             // Suppose the partial network cannot pass the private DNS validation as well, so only
             // add NETWORK_VALIDATION_PROBE_DNS in probesCompleted but not probesSucceeded.
             if (isStrictMode) {
@@ -838,8 +837,10 @@
         }
 
         void notifyDataStallSuspected() throws Exception {
-            mNmCallbacks.notifyDataStallSuspected(
-                    DATA_STALL_TIMESTAMP, DATA_STALL_DETECTION_METHOD, mDataStallExtras);
+            final DataStallReportParcelable p = new DataStallReportParcelable();
+            p.detectionMethod = DATA_STALL_DETECTION_METHOD;
+            p.timestampMillis = DATA_STALL_TIMESTAMP;
+            mNmCallbacks.notifyDataStallSuspected(p);
         }
     }
 
diff --git a/tests/net/java/com/android/server/net/NetworkStatsBaseTest.java b/tests/net/java/com/android/server/net/NetworkStatsBaseTest.java
index 28785f7..3aafe0b 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsBaseTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsBaseTest.java
@@ -41,6 +41,7 @@
     static final String TEST_IFACE = "test0";
     static final String TEST_IFACE2 = "test1";
     static final String TUN_IFACE = "test_nss_tun0";
+    static final String TUN_IFACE2 = "test_nss_tun1";
 
     static final int UID_RED = 1001;
     static final int UID_BLUE = 1002;
@@ -107,10 +108,14 @@
         assertEquals("unexpected operations", operations, entry.operations);
     }
 
-    VpnInfo createVpnInfo(String[] underlyingIfaces) {
+    static VpnInfo createVpnInfo(String[] underlyingIfaces) {
+        return createVpnInfo(TUN_IFACE, underlyingIfaces);
+    }
+
+    static VpnInfo createVpnInfo(String vpnIface, String[] underlyingIfaces) {
         VpnInfo info = new VpnInfo();
         info.ownerUid = UID_VPN;
-        info.vpnIface = TUN_IFACE;
+        info.vpnIface = vpnIface;
         info.underlyingIfaces = underlyingIfaces;
         return info;
     }
diff --git a/tests/net/java/com/android/server/net/NetworkStatsFactoryTest.java b/tests/net/java/com/android/server/net/NetworkStatsFactoryTest.java
index a21f509..4473492 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsFactoryTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsFactoryTest.java
@@ -104,7 +104,7 @@
     }
 
     @Test
-    public void vpnRewriteTrafficThroughItself() throws Exception {
+    public void testVpnRewriteTrafficThroughItself() throws Exception {
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {TEST_IFACE})};
         mFactory.updateVpnInfos(vpnInfos);
 
@@ -133,7 +133,7 @@
     }
 
     @Test
-    public void vpnWithClat() throws Exception {
+    public void testVpnWithClat() throws Exception {
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {CLAT_PREFIX + TEST_IFACE})};
         mFactory.updateVpnInfos(vpnInfos);
         mFactory.noteStackedIface(CLAT_PREFIX + TEST_IFACE, TEST_IFACE);
@@ -166,7 +166,7 @@
     }
 
     @Test
-    public void vpnWithOneUnderlyingIface() throws Exception {
+    public void testVpnWithOneUnderlyingIface() throws Exception {
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {TEST_IFACE})};
         mFactory.updateVpnInfos(vpnInfos);
 
@@ -189,7 +189,7 @@
     }
 
     @Test
-    public void vpnWithOneUnderlyingIfaceAndOwnTraffic() throws Exception {
+    public void testVpnWithOneUnderlyingIfaceAndOwnTraffic() throws Exception {
         // WiFi network is connected and VPN is using WiFi (which has TEST_IFACE).
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {TEST_IFACE})};
         mFactory.updateVpnInfos(vpnInfos);
@@ -217,7 +217,7 @@
     }
 
     @Test
-    public void vpnWithOneUnderlyingIface_withCompression() throws Exception {
+    public void testVpnWithOneUnderlyingIface_withCompression() throws Exception {
         // WiFi network is connected and VPN is using WiFi (which has TEST_IFACE).
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {TEST_IFACE})};
         mFactory.updateVpnInfos(vpnInfos);
@@ -238,7 +238,7 @@
     }
 
     @Test
-    public void vpnWithTwoUnderlyingIfaces_packetDuplication() throws Exception {
+    public void testVpnWithTwoUnderlyingIfaces_packetDuplication() throws Exception {
         // WiFi and Cell networks are connected and VPN is using WiFi (which has TEST_IFACE) and
         // Cell (which has TEST_IFACE2) and has declared both of them in its underlying network set.
         // Additionally, VPN is duplicating traffic across both WiFi and Cell.
@@ -264,7 +264,47 @@
     }
 
     @Test
-    public void vpnWithTwoUnderlyingIfaces_splitTraffic() throws Exception {
+    public void testConcurrentVpns() throws Exception {
+        // Assume two VPNs are connected on two different network interfaces. VPN1 is using
+        // TEST_IFACE and VPN2 is using TEST_IFACE2.
+        final VpnInfo[] vpnInfos = new VpnInfo[] {
+                createVpnInfo(TUN_IFACE, new String[] {TEST_IFACE}),
+                createVpnInfo(TUN_IFACE2, new String[] {TEST_IFACE2})};
+        mFactory.updateVpnInfos(vpnInfos);
+
+        // create some traffic (assume 10 bytes of MTU for VPN interface and 1 byte encryption
+        // overhead per packet):
+        // 1000 bytes (100 packets) were sent, and 2000 bytes (200 packets) were received by UID_RED
+        // over VPN1.
+        // 700 bytes (70 packets) were sent, and 3000 bytes (300 packets) were received by UID_RED
+        // over VPN2.
+        // 500 bytes (50 packets) were sent, and 1000 bytes (100 packets) were received by UID_BLUE
+        // over VPN1.
+        // 250 bytes (25 packets) were sent, and 500 bytes (50 packets) were received by UID_BLUE
+        // over VPN2.
+        // VPN1 sent 1650 bytes (150 packets), and received 3300 (300 packets) over TEST_IFACE.
+        // Of 1650 bytes sent over WiFi, expect 1000 bytes attributed to UID_RED, 500 bytes
+        // attributed to UID_BLUE, and 150 bytes attributed to UID_VPN.
+        // Of 3300 bytes received over WiFi, expect 2000 bytes attributed to UID_RED, 1000 bytes
+        // attributed to UID_BLUE, and 300 bytes attributed to UID_VPN.
+        // VPN2 sent 1045 bytes (95 packets), and received 3850 (350 packets) over TEST_IFACE2.
+        // Of 1045 bytes sent over Cell, expect 700 bytes attributed to UID_RED, 250 bytes
+        // attributed to UID_BLUE, and 95 bytes attributed to UID_VPN.
+        // Of 3850 bytes received over Cell, expect 3000 bytes attributed to UID_RED, 500 bytes
+        // attributed to UID_BLUE, and 350 bytes attributed to UID_VPN.
+        final NetworkStats tunStats =
+                parseDetailedStats(R.raw.xt_qtaguid_vpn_one_underlying_two_vpn);
+
+        assertValues(tunStats, TEST_IFACE, UID_RED, 2000L, 200L, 1000L, 100L);
+        assertValues(tunStats, TEST_IFACE, UID_BLUE, 1000L, 100L, 500L, 50L);
+        assertValues(tunStats, TEST_IFACE2, UID_RED, 3000L, 300L, 700L, 70L);
+        assertValues(tunStats, TEST_IFACE2, UID_BLUE, 500L, 50L, 250L, 25L);
+        assertValues(tunStats, TEST_IFACE, UID_VPN, 300L, 0L, 150L, 0L);
+        assertValues(tunStats, TEST_IFACE2, UID_VPN, 350L, 0L, 95L, 0L);
+    }
+
+    @Test
+    public void testVpnWithTwoUnderlyingIfaces_splitTraffic() throws Exception {
         // WiFi and Cell networks are connected and VPN is using WiFi (which has TEST_IFACE) and
         // Cell (which has TEST_IFACE2) and has declared both of them in its underlying network set.
         // Additionally, VPN is arbitrarily splitting traffic across WiFi and Cell.
@@ -291,7 +331,7 @@
     }
 
     @Test
-    public void vpnWithTwoUnderlyingIfaces_splitTrafficWithCompression() throws Exception {
+    public void testVpnWithTwoUnderlyingIfaces_splitTrafficWithCompression() throws Exception {
         // WiFi and Cell networks are connected and VPN is using WiFi (which has TEST_IFACE) and
         // Cell (which has TEST_IFACE2) and has declared both of them in its underlying network set.
         // Additionally, VPN is arbitrarily splitting compressed traffic across WiFi and Cell.
@@ -314,7 +354,7 @@
     }
 
     @Test
-    public void vpnWithIncorrectUnderlyingIface() throws Exception {
+    public void testVpnWithIncorrectUnderlyingIface() throws Exception {
         // WiFi and Cell networks are connected and VPN is using Cell (which has TEST_IFACE2),
         // but has declared only WiFi (TEST_IFACE) in its underlying network set.
         VpnInfo[] vpnInfos = new VpnInfo[] {createVpnInfo(new String[] {TEST_IFACE})};
diff --git a/tests/net/res/raw/xt_qtaguid_vpn_one_underlying_two_vpn b/tests/net/res/raw/xt_qtaguid_vpn_one_underlying_two_vpn
new file mode 100644
index 0000000..eb0513b
--- /dev/null
+++ b/tests/net/res/raw/xt_qtaguid_vpn_one_underlying_two_vpn
@@ -0,0 +1,9 @@
+idx iface acct_tag_hex uid_tag_int cnt_set rx_bytes rx_packets tx_bytes tx_packets rx_tcp_bytes rx_tcp_packets rx_udp_bytes rx_udp_packets rx_other_bytes rx_other_packets tx_tcp_bytes tx_tcp_packets tx_udp_bytes tx_udp_packets tx_other_bytes tx_other_packets
+2 test_nss_tun0 0x0 1001 0 2000 200 1000 100 0 0 0 0 0 0 0 0 0 0 0 0
+3 test_nss_tun0 0x0 1002 0 1000 100 500 50 0 0 0 0 0 0 0 0 0 0 0 0
+4 test_nss_tun1 0x0 1001 0 3000 300 700 70 0 0 0 0 0 0 0 0 0 0 0 0
+5 test_nss_tun1 0x0 1002 0 500 50 250 25 0 0 0 0 0 0 0 0 0 0 0 0
+6 test0 0x0 1004 0 3300 300 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+7 test0 0x0 1004 1 0 0 1650 150 0 0 0 0 0 0 0 0 0 0 0 0
+8 test1 0x0 1004 0 3850 350 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+9 test1 0x0 1004 1 0 0 1045 95 0 0 0 0 0 0 0 0 0 0 0 0
\ No newline at end of file