diff --git a/framework/src/android/net/ConnectivityManager.java b/framework/src/android/net/ConnectivityManager.java
index 987dcc4..06dec93 100644
--- a/framework/src/android/net/ConnectivityManager.java
+++ b/framework/src/android/net/ConnectivityManager.java
@@ -3231,32 +3231,6 @@
         }
     }
 
-    /** {@hide} - returns the factory serial number */
-    @UnsupportedAppUsage
-    @RequiresPermission(anyOf = {
-            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
-            android.Manifest.permission.NETWORK_FACTORY})
-    public int registerNetworkFactory(Messenger messenger, String name) {
-        try {
-            return mService.registerNetworkFactory(messenger, name);
-        } catch (RemoteException e) {
-            throw e.rethrowFromSystemServer();
-        }
-    }
-
-    /** {@hide} */
-    @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
-    @RequiresPermission(anyOf = {
-            NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK,
-            android.Manifest.permission.NETWORK_FACTORY})
-    public void unregisterNetworkFactory(Messenger messenger) {
-        try {
-            mService.unregisterNetworkFactory(messenger);
-        } catch (RemoteException e) {
-            throw e.rethrowFromSystemServer();
-        }
-    }
-
     /**
      * Registers the specified {@link NetworkProvider}.
      * Each listener must only be registered once. The listener can be unregistered with
diff --git a/framework/src/android/net/IConnectivityManager.aidl b/framework/src/android/net/IConnectivityManager.aidl
index 1b4d2e4..db8b7ed 100644
--- a/framework/src/android/net/IConnectivityManager.aidl
+++ b/framework/src/android/net/IConnectivityManager.aidl
@@ -156,9 +156,6 @@
 
     boolean requestBandwidthUpdate(in Network network);
 
-    int registerNetworkFactory(in Messenger messenger, in String name);
-    void unregisterNetworkFactory(in Messenger messenger);
-
     int registerNetworkProvider(in Messenger messenger, in String name);
     void unregisterNetworkProvider(in Messenger messenger);
 
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index c6efd29..6e5ae6e 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -3357,7 +3357,6 @@
                 if (VDBG) log("NetworkFactory connected");
                 // Finish setting up the full connection
                 NetworkProviderInfo npi = mNetworkProviderInfos.get(msg.replyTo);
-                npi.completeConnection();
                 sendAllRequestsToProvider(npi);
             } else {
                 loge("Error connecting NetworkFactory");
@@ -5443,27 +5442,21 @@
     private static class NetworkProviderInfo {
         public final String name;
         public final Messenger messenger;
-        private final AsyncChannel mAsyncChannel;
         private final IBinder.DeathRecipient mDeathRecipient;
         public final int providerId;
 
         NetworkProviderInfo(String name, Messenger messenger, AsyncChannel asyncChannel,
-                int providerId, IBinder.DeathRecipient deathRecipient) {
+                int providerId, @NonNull IBinder.DeathRecipient deathRecipient) {
             this.name = name;
             this.messenger = messenger;
             this.providerId = providerId;
-            mAsyncChannel = asyncChannel;
             mDeathRecipient = deathRecipient;
 
-            if ((mAsyncChannel == null) == (mDeathRecipient == null)) {
-                throw new AssertionError("Must pass exactly one of asyncChannel or deathRecipient");
+            if (mDeathRecipient == null) {
+                throw new AssertionError("Must pass a deathRecipient");
             }
         }
 
-        boolean isLegacyNetworkFactory() {
-            return mAsyncChannel != null;
-        }
-
         void sendMessageToNetworkProvider(int what, int arg1, int arg2, Object obj) {
             try {
                 messenger.send(Message.obtain(null /* handler */, what, arg1, arg2, obj));
@@ -5474,38 +5467,19 @@
         }
 
         void requestNetwork(NetworkRequest request, int score, int servingProviderId) {
-            if (isLegacyNetworkFactory()) {
-                mAsyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score,
-                        servingProviderId, request);
-            } else {
-                sendMessageToNetworkProvider(NetworkProvider.CMD_REQUEST_NETWORK, score,
+            sendMessageToNetworkProvider(NetworkProvider.CMD_REQUEST_NETWORK, score,
                             servingProviderId, request);
-            }
         }
 
         void cancelRequest(NetworkRequest request) {
-            if (isLegacyNetworkFactory()) {
-                mAsyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, request);
-            } else {
-                sendMessageToNetworkProvider(NetworkProvider.CMD_CANCEL_REQUEST, 0, 0, request);
-            }
+            sendMessageToNetworkProvider(NetworkProvider.CMD_CANCEL_REQUEST, 0, 0, request);
         }
 
         void connect(Context context, Handler handler) {
-            if (isLegacyNetworkFactory()) {
-                mAsyncChannel.connect(context, handler, messenger);
-            } else {
-                try {
-                    messenger.getBinder().linkToDeath(mDeathRecipient, 0);
-                } catch (RemoteException e) {
-                    mDeathRecipient.binderDied();
-                }
-            }
-        }
-
-        void completeConnection() {
-            if (isLegacyNetworkFactory()) {
-                mAsyncChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
+            try {
+                messenger.getBinder().linkToDeath(mDeathRecipient, 0);
+            } catch (RemoteException e) {
+                mDeathRecipient.binderDied();
             }
         }
     }
@@ -6000,15 +5974,6 @@
                 EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 0, networkRequest));
     }
 
-    @Override
-    public int registerNetworkFactory(Messenger messenger, String name) {
-        enforceNetworkFactoryPermission();
-        NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger, new AsyncChannel(),
-                nextNetworkProviderId(), null /* deathRecipient */);
-        mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi));
-        return npi.providerId;
-    }
-
     private void handleRegisterNetworkProvider(NetworkProviderInfo npi) {
         if (mNetworkProviderInfos.containsKey(npi.messenger)) {
             // Avoid creating duplicates. even if an app makes a direct AIDL call.
@@ -6022,10 +5987,7 @@
         if (DBG) log("Got NetworkProvider Messenger for " + npi.name);
         mNetworkProviderInfos.put(npi.messenger, npi);
         npi.connect(mContext, mTrackerHandler);
-        if (!npi.isLegacyNetworkFactory()) {
-            // Legacy NetworkFactories get their requests when their AsyncChannel connects.
-            sendAllRequestsToProvider(npi);
-        }
+        sendAllRequestsToProvider(npi);
     }
 
     @Override
@@ -6044,11 +6006,6 @@
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_PROVIDER, messenger));
     }
 
-    @Override
-    public void unregisterNetworkFactory(Messenger messenger) {
-        unregisterNetworkProvider(messenger);
-    }
-
     private void handleUnregisterNetworkProvider(Messenger messenger) {
         NetworkProviderInfo npi = mNetworkProviderInfos.remove(messenger);
         if (npi == null) {