diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
old mode 100755
new mode 100644
index 9af250b..afaef20
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -5529,7 +5529,7 @@
         }
 
         // Delayed teardown.
-        if (nai.isCreated()) {
+        if (nai.isCreated() && !nai.isDestroyed()) {
             try {
                 mNetd.networkSetPermissionForNetwork(nai.network.netId, INetd.PERMISSION_SYSTEM);
             } catch (RemoteException e) {