diff --git a/core/java/android/net/metrics/NetworkEvent.java b/core/java/android/net/metrics/NetworkEvent.java
index 4df3bf0..1999e78 100644
--- a/core/java/android/net/metrics/NetworkEvent.java
+++ b/core/java/android/net/metrics/NetworkEvent.java
@@ -60,29 +60,25 @@
     @Retention(RetentionPolicy.SOURCE)
     public @interface EventType {}
 
-    public final int netId;
     public final @EventType int eventType;
     public final long durationMs;
 
-    public NetworkEvent(int netId, @EventType int eventType, long durationMs) {
-        this.netId = netId;
+    public NetworkEvent(@EventType int eventType, long durationMs) {
         this.eventType = eventType;
         this.durationMs = durationMs;
     }
 
-    public NetworkEvent(int netId, @EventType int eventType) {
-        this(netId, eventType, 0);
+    public NetworkEvent(@EventType int eventType) {
+        this(eventType, 0);
     }
 
     private NetworkEvent(Parcel in) {
-        netId = in.readInt();
         eventType = in.readInt();
         durationMs = in.readLong();
     }
 
     @Override
     public void writeToParcel(Parcel out, int flags) {
-        out.writeInt(netId);
         out.writeInt(eventType);
         out.writeLong(durationMs);
     }
@@ -105,8 +101,8 @@
 
     @Override
     public String toString() {
-        return String.format("NetworkEvent(%d, %s, %dms)",
-                netId, Decoder.constants.get(eventType), durationMs);
+        return String.format("NetworkEvent(%s, %dms)",
+                Decoder.constants.get(eventType), durationMs);
     }
 
     final static class Decoder {
diff --git a/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java b/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
index 2dfee11..397af7b 100644
--- a/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
+++ b/services/core/java/com/android/server/connectivity/IpConnectivityEventBuilder.java
@@ -46,7 +46,6 @@
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityEvent;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.IpConnectivityLog;
-import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.NetworkId;
 import com.android.server.connectivity.metrics.nano.IpConnectivityLogClass.Pair;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -247,7 +246,6 @@
     private static void setNetworkEvent(IpConnectivityEvent out, NetworkEvent in) {
         IpConnectivityLogClass.NetworkEvent networkEvent =
                 new IpConnectivityLogClass.NetworkEvent();
-        networkEvent.networkId = netIdOf(in.netId);
         networkEvent.eventType = in.eventType;
         networkEvent.latencyMs = (int) in.durationMs;
         out.setNetworkEvent(networkEvent);
@@ -326,12 +324,6 @@
         return pairs;
     }
 
-    private static NetworkId netIdOf(int netid) {
-        final NetworkId ni = new NetworkId();
-        ni.networkId = netid;
-        return ni;
-    }
-
     private static int ipSupportOf(DefaultNetworkEvent in) {
         if (in.ipv4 && in.ipv6) {
             return IpConnectivityLogClass.DefaultNetworkEvent.DUAL;
diff --git a/services/core/java/com/android/server/connectivity/NetworkMonitor.java b/services/core/java/com/android/server/connectivity/NetworkMonitor.java
index 8b886d6..7684030 100644
--- a/services/core/java/com/android/server/connectivity/NetworkMonitor.java
+++ b/services/core/java/com/android/server/connectivity/NetworkMonitor.java
@@ -1129,7 +1129,8 @@
     }
 
     private void logNetworkEvent(int evtype) {
-        mMetricsLog.log(new NetworkEvent(mNetId, evtype));
+        int[] transports = mNetworkAgentInfo.networkCapabilities.getTransportTypes();
+        mMetricsLog.log(mNetId, transports, new NetworkEvent(evtype));
     }
 
     private int networkEventType(ValidationStage s, EvaluationResult r) {
@@ -1150,7 +1151,8 @@
 
     private void maybeLogEvaluationResult(int evtype) {
         if (mEvaluationTimer.isRunning()) {
-            mMetricsLog.log(new NetworkEvent(mNetId, evtype, mEvaluationTimer.stop()));
+            int[] transports = mNetworkAgentInfo.networkCapabilities.getTransportTypes();
+            mMetricsLog.log(mNetId, transports, new NetworkEvent(evtype, mEvaluationTimer.stop()));
             mEvaluationTimer.reset();
         }
     }
diff --git a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
index 05cf856..0656c5f 100644
--- a/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
+++ b/tests/net/java/com/android/server/connectivity/IpConnectivityEventBuilderTest.java
@@ -337,7 +337,6 @@
     public void testNetworkEventSerialization() {
         ConnectivityMetricsEvent ev = describeIpEvent(
                 aType(NetworkEvent.class),
-                anInt(100),
                 anInt(5),
                 aLong(20410));
 
@@ -352,9 +351,6 @@
                 "  network_event <",
                 "    event_type: 5",
                 "    latency_ms: 20410",
-                "    network_id <",
-                "      network_id: 100",
-                "    >",
                 "  >",
                 ">",
                 "version: 2\n");