diff --git a/core/java/android/net/NetworkAgent.java b/core/java/android/net/NetworkAgent.java
index 4f46736c08..83a7d16fa2 100644
--- a/core/java/android/net/NetworkAgent.java
+++ b/core/java/android/net/NetworkAgent.java
@@ -227,12 +227,6 @@ public abstract class NetworkAgent {
      */
     public static final String REDIRECT_URL_KEY = "redirect URL";
 
-    /**
-     * Bundle key for the underlying networks in {@code EVENT_UNDERLYING_NETWORKS_CHANGED}.
-     * @hide
-     */
-    public static final String UNDERLYING_NETWORKS_KEY = "underlyingNetworks";
-
      /**
      * Sent by the NetworkAgent to ConnectivityService to indicate this network was
      * explicitly selected.  This should be sent before the NetworkInfo is marked
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index a74221178d..b07e98f602 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -2764,13 +2764,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
                         Log.wtf(TAG, "Non-virtual networks cannot have underlying networks");
                         break;
                     }
-                    final ArrayList<Network> underlying;
-                    try {
-                        underlying = ((Bundle) arg.second).getParcelableArrayList(
-                                NetworkAgent.UNDERLYING_NETWORKS_KEY);
-                    } catch (NullPointerException | ClassCastException e) {
-                        break;
-                    }
+                    final List<Network> underlying = (List<Network>) arg.second;
                     final Network[] oldUnderlying = nai.declaredUnderlyingNetworks;
                     nai.declaredUnderlyingNetworks = (underlying != null)
                             ? underlying.toArray(new Network[0]) : null;
diff --git a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
index ba6cbcd3c7..e3663baaf9 100644
--- a/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
@@ -37,7 +37,6 @@ import android.net.NetworkMonitorManager;
 import android.net.NetworkRequest;
 import android.net.NetworkState;
 import android.net.TcpKeepalivePacketData;
-import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.INetworkManagementService;
@@ -53,7 +52,6 @@ import com.android.internal.util.WakeupMessage;
 import com.android.server.ConnectivityService;
 
 import java.io.PrintWriter;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.NoSuchElementException;
 import java.util.Objects;
@@ -583,16 +581,8 @@ public class NetworkAgentInfo implements Comparable<NetworkAgentInfo> {
 
         @Override
         public void sendUnderlyingNetworks(@Nullable List<Network> networks) {
-            final Bundle args = new Bundle();
-            if (networks instanceof ArrayList<?>) {
-                args.putParcelableArrayList(NetworkAgent.UNDERLYING_NETWORKS_KEY,
-                        (ArrayList<Network>) networks);
-            } else {
-                args.putParcelableArrayList(NetworkAgent.UNDERLYING_NETWORKS_KEY,
-                        networks == null ? null : new ArrayList<>(networks));
-            }
             mHandler.obtainMessage(NetworkAgent.EVENT_UNDERLYING_NETWORKS_CHANGED,
-                    new Pair<>(NetworkAgentInfo.this, args)).sendToTarget();
+                    new Pair<>(NetworkAgentInfo.this, networks)).sendToTarget();
         }
     }