diff --git a/Vcn/service-b/src/com/android/server/vcn/VcnGatewayConnection.java b/Vcn/service-b/src/com/android/server/vcn/VcnGatewayConnection.java
index 42c887512d..3b370c1e8a 100644
--- a/Vcn/service-b/src/com/android/server/vcn/VcnGatewayConnection.java
+++ b/Vcn/service-b/src/com/android/server/vcn/VcnGatewayConnection.java
@@ -1860,10 +1860,13 @@ public class VcnGatewayConnection extends StateMachine {
                                 if (mIsQuitting.getValue()) {
                                     return; // Ignore; VcnGatewayConnection quitting or already quit
                                 }
+                                // TODO(b/443831229): check if mNetworkAgent is stale first.
 
                                 switch (status) {
                                     case NetworkAgent.VALIDATION_STATUS_VALID:
                                         clearFailedAttemptCounterAndSafeModeAlarm();
+                                        mVcnMetrics.logVcnNetworkValidated(
+                                                mId, mNetworkAgent.getIdentityHashCode());
                                         break;
                                     case NetworkAgent.VALIDATION_STATUS_NOT_VALID:
                                         // Trigger re-validation of underlying networks; if it
@@ -1877,6 +1880,8 @@ public class VcnGatewayConnection extends StateMachine {
                                         // Will only set a new alarm if no safe mode alarm is
                                         // currently scheduled.
                                         setSafeModeAlarm();
+                                        mVcnMetrics.logVcnNetworkNotValidated(
+                                                mId, mNetworkAgent.getIdentityHashCode());
                                         break;
                                     default:
                                         logWtf(
@@ -2982,6 +2987,7 @@ public class VcnGatewayConnection extends StateMachine {
     @VisibleForTesting(visibility = Visibility.PRIVATE)
     public static class VcnNetworkAgent {
         private final NetworkAgent mImpl;
+        private final int mId;
 
         public VcnNetworkAgent(
                 @NonNull VcnContext vcnContext,
@@ -3013,6 +3019,7 @@ public class VcnGatewayConnection extends StateMachine {
                             validationStatusCallback.accept(status);
                         }
                     };
+            mId = System.identityHashCode(this);
         }
 
         /** Registers the underlying NetworkAgent */
@@ -3045,6 +3052,11 @@ public class VcnGatewayConnection extends StateMachine {
             mImpl.setUnderlyingNetworks(underlyingNetworks);
         }
 
+        /** Retrieves the identity hash code of the underlying NetworkAgent */
+        public int getIdentityHashCode() {
+            return mId;
+        }
+
         /** Retrieves the Network for the underlying NetworkAgent */
         @Nullable
         public Network getNetwork() {
diff --git a/Vcn/tests/unit/java/com/android/server/vcn/VcnGatewayConnectionConnectedStateTest.java b/Vcn/tests/unit/java/com/android/server/vcn/VcnGatewayConnectionConnectedStateTest.java
index 64fcaff862..5763969d40 100644
--- a/Vcn/tests/unit/java/com/android/server/vcn/VcnGatewayConnectionConnectedStateTest.java
+++ b/Vcn/tests/unit/java/com/android/server/vcn/VcnGatewayConnectionConnectedStateTest.java
@@ -98,6 +98,7 @@ import java.util.function.Consumer;
 @SmallTest
 public class VcnGatewayConnectionConnectedStateTest extends VcnGatewayConnectionTestBase {
     private static final int PARALLEL_SA_COUNT = 4;
+    private static final int NETWORK_AGENT_ID = 1234;
 
     private VcnIkeSession mIkeSession;
     private VcnNetworkAgent mNetworkAgent;
@@ -114,6 +115,7 @@ public class VcnGatewayConnectionConnectedStateTest extends VcnGatewayConnection
 
         mVcnNetwork = mock(Network.class);
         doReturn(mVcnNetwork).when(mNetworkAgent).getNetwork();
+        doReturn(NETWORK_AGENT_ID).when(mNetworkAgent).getIdentityHashCode();
 
         mGatewayConnection.setUnderlyingNetwork(TEST_UNDERLYING_NETWORK_RECORD_1);
 
@@ -611,6 +613,26 @@ public class VcnGatewayConnectionConnectedStateTest extends VcnGatewayConnection
         verifyNoMoreInteractions(mIpSecSvc);
     }
 
+    @Test
+    public void testValidatedTriggered_logsMetrics() throws Exception {
+        triggerChildOpened();
+        mTestLooper.dispatchAll();
+
+        triggerValidation(NetworkAgent.VALIDATION_STATUS_VALID);
+
+        verify(mVcnMetrics).logVcnNetworkValidated(anyInt(), eq(NETWORK_AGENT_ID));
+    }
+
+    @Test
+    public void testNotValidatedTriggered_logsMetrics() throws Exception {
+        triggerChildOpened();
+        mTestLooper.dispatchAll();
+
+        triggerValidation(NetworkAgent.VALIDATION_STATUS_NOT_VALID);
+
+        verify(mVcnMetrics).logVcnNetworkNotValidated(anyInt(), eq(NETWORK_AGENT_ID));
+    }
+
     @Test
     public void testSuccessfulConnectionExitsSafeMode() throws Exception {
         verifySafeModeTimeoutNotifiesCallbackAndUnregistersNetworkAgent(