diff --git a/Tethering/src/com/android/networkstack/tethering/Tethering.java b/Tethering/src/com/android/networkstack/tethering/Tethering.java
index b7607ef..996ee11 100644
--- a/Tethering/src/com/android/networkstack/tethering/Tethering.java
+++ b/Tethering/src/com/android/networkstack/tethering/Tethering.java
@@ -1687,6 +1687,8 @@
         static final int EVENT_IFACE_UPDATE_LINKPROPERTIES      = BASE_MAIN_SM + 7;
         // Events from EntitlementManager to choose upstream again.
         static final int EVENT_UPSTREAM_PERMISSION_CHANGED      = BASE_MAIN_SM + 8;
+        // Internal request from IpServer to enable or disable downstream.
+        static final int EVENT_REQUEST_CHANGE_DOWNSTREAM        = BASE_MAIN_SM + 9;
         private final State mInitialState;
         private final State mTetherModeAliveState;
 
@@ -2186,6 +2188,12 @@
                         }
                         break;
                     }
+                    case EVENT_REQUEST_CHANGE_DOWNSTREAM: {
+                        final int tetheringType = message.arg1;
+                        final Boolean enabled = (Boolean) message.obj;
+                        enableTetheringInternal(tetheringType, enabled, null);
+                        break;
+                    }
                     default:
                         retValue = false;
                         break;
@@ -2743,7 +2751,8 @@
 
             @Override
             public void requestEnableTethering(int tetheringType, boolean enabled) {
-                enableTetheringInternal(tetheringType, enabled, null);
+                mTetherMainSM.sendMessage(TetherMainSM.EVENT_REQUEST_CHANGE_DOWNSTREAM,
+                        tetheringType, 0, enabled ? Boolean.TRUE : Boolean.FALSE);
             }
         };
     }
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
index ba39f22..f89ee8e 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -2880,24 +2880,33 @@
         final Network wifiNetwork = new Network(200);
         final Network[] allNetworks = { wifiNetwork };
         doReturn(allNetworks).when(mCm).getAllNetworks();
+        InOrder inOrder = inOrder(mUsbManager, mNetd);
         runUsbTethering(null);
+
+        inOrder.verify(mNetd).tetherInterfaceAdd(TEST_RNDIS_IFNAME);
+
         final ArgumentCaptor<InterfaceConfigurationParcel> ifaceConfigCaptor =
                 ArgumentCaptor.forClass(InterfaceConfigurationParcel.class);
         verify(mNetd).interfaceSetCfg(ifaceConfigCaptor.capture());
         final String ipv4Address = ifaceConfigCaptor.getValue().ipv4Addr;
         verify(mDhcpServer, timeout(DHCPSERVER_START_TIMEOUT_MS).times(1)).startWithCallbacks(
                 any(), any());
-        reset(mUsbManager);
 
         // Cause a prefix conflict by assigning a /30 out of the downstream's /24 to the upstream.
         updateV4Upstream(new LinkAddress(InetAddresses.parseNumericAddress(ipv4Address), 30),
                 wifiNetwork, TEST_WIFI_IFNAME, TRANSPORT_WIFI);
         // verify turn off usb tethering
-        verify(mUsbManager).setCurrentFunctions(UsbManager.FUNCTION_NONE);
+        inOrder.verify(mUsbManager).setCurrentFunctions(UsbManager.FUNCTION_NONE);
         sendUsbBroadcast(true, true, -1 /* function */);
         mLooper.dispatchAll();
+        inOrder.verify(mNetd).tetherInterfaceRemove(TEST_RNDIS_IFNAME);
+
         // verify restart usb tethering
-        verify(mUsbManager).setCurrentFunctions(UsbManager.FUNCTION_RNDIS);
+        inOrder.verify(mUsbManager).setCurrentFunctions(UsbManager.FUNCTION_RNDIS);
+
+        sendUsbBroadcast(true, true, TETHER_USB_RNDIS_FUNCTION);
+        mLooper.dispatchAll();
+        inOrder.verify(mNetd).tetherInterfaceAdd(TEST_RNDIS_IFNAME);
     }
 
     @Test