diff --git a/Tethering/src/android/net/ip/IpServer.java b/Tethering/src/android/net/ip/IpServer.java
index ebc9e4e..e677dd5 100644
--- a/Tethering/src/android/net/ip/IpServer.java
+++ b/Tethering/src/android/net/ip/IpServer.java
@@ -168,10 +168,10 @@
         /**
          * Request Tethering change.
          *
-         * @param request the TetheringRequest this IpServer was enabled with.
+         * @param tetheringType the downstream type of this IpServer.
          * @param enabled enable or disable tethering.
          */
-        public void requestEnableTethering(TetheringRequest request, boolean enabled) { }
+        public void requestEnableTethering(int tetheringType, boolean enabled) { }
     }
 
     /** Capture IpServer dependencies, for injection. */
@@ -1178,8 +1178,8 @@
                     handleNewPrefixRequest((IpPrefix) message.obj);
                     break;
                 case CMD_NOTIFY_PREFIX_CONFLICT:
-                    mLog.i("restart tethering: " + mIfaceName);
-                    mCallback.requestEnableTethering(mTetheringRequest, false /* enabled */);
+                    mLog.i("restart tethering: " + mInterfaceType);
+                    mCallback.requestEnableTethering(mInterfaceType, false /* enabled */);
                     transitionTo(mWaitingForRestartState);
                     break;
                 case CMD_SERVICE_FAILED_TO_START:
@@ -1463,12 +1463,12 @@
                 case CMD_TETHER_UNREQUESTED:
                     transitionTo(mInitialState);
                     mLog.i("Untethered (unrequested) and restarting " + mIfaceName);
-                    mCallback.requestEnableTethering(mTetheringRequest, true /* enabled */);
+                    mCallback.requestEnableTethering(mInterfaceType, true /* enabled */);
                     break;
                 case CMD_INTERFACE_DOWN:
                     transitionTo(mUnavailableState);
                     mLog.i("Untethered (interface down) and restarting " + mIfaceName);
-                    mCallback.requestEnableTethering(mTetheringRequest, true /* enabled */);
+                    mCallback.requestEnableTethering(mInterfaceType, true /* enabled */);
                     break;
                 default:
                     return false;
diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index 254b60f..ad36e53 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -2207,9 +2207,9 @@
                         break;
                     }
                     case EVENT_REQUEST_CHANGE_DOWNSTREAM: {
-                        final boolean enabled = message.arg1 == 1;
-                        final TetheringRequest request = (TetheringRequest) message.obj;
-                        enableTetheringInternal(request.getTetheringType(), enabled, null, null);
+                        final int tetheringType = message.arg1;
+                        final Boolean enabled = (Boolean) message.obj;
+                        enableTetheringInternal(tetheringType, enabled, null, null);
                         break;
                     }
                     default:
@@ -2787,9 +2787,9 @@
         }
 
         @Override
-        public void requestEnableTethering(TetheringRequest request, boolean enabled) {
+        public void requestEnableTethering(int tetheringType, boolean enabled) {
             mTetherMainSM.sendMessage(TetherMainSM.EVENT_REQUEST_CHANGE_DOWNSTREAM,
-                    enabled ? 1 : 0, 0, request);
+                    tetheringType, 0, enabled ? Boolean.TRUE : Boolean.FALSE);
         }
     }