Wipe the data in IpMemoryStore database upon network factory reset.

Bug:128499160
Test: manual
Test: atest FrameworksNetTests NetworkStackTests
Change-Id: Ib563463a861a5d27b1e9b5fbb92342249b573802

services/core/java/com/android/server/ConnectivityService.java

@@ -77,6 +77,7 @@ import android.net.INetworkStatsService;
 import android.net.ISocketKeepaliveCallback;
 import android.net.ITetheringEventCallback;
 import android.net.InetAddresses;
+import android.net.IpMemoryStore;
 import android.net.IpPrefix;
 import android.net.LinkProperties;
 import android.net.LinkProperties.CompareResult;
@@ -6893,6 +6894,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
 
         final int userId = UserHandle.getCallingUserId();
 
+        final IpMemoryStore ipMemoryStore = IpMemoryStore.getMemoryStore(mContext);
+        ipMemoryStore.factoryReset();
+
         // Turn airplane mode off
         setAirplaneMode(false);
 

tests/net/java/android/net/IpMemoryStoreTest.java

@@ -321,4 +321,11 @@ public class IpMemoryStoreTest {
                 eq(TEST_OTHER_DATA_NAME), any());
         assertEquals(TEST_NETWORK_ATTRIBUTES, new NetworkAttributes(mNapCaptor.getValue()));
     }
+
+    @Test
+    public void testFactoryReset() throws RemoteException {
+        startIpMemoryStore(true /* supplyService */);
+        mStore.factoryReset();
+        verify(mMockService, times(1)).factoryReset();
+    }
 }