diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index d0cb294..51a5762 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -5983,6 +5983,10 @@
             final boolean curMetered = nai.networkCapabilities.isMetered();
             maybeNotifyNetworkBlocked(nai, curMetered, curMetered,
                     mVpnBlockedUidRanges, newVpnBlockedUidRanges);
+
+            if (nai.isVPN()) {
+                updateVpnFiltering(nai.linkProperties, nai.linkProperties, nai, true /* force */);
+            }
         }
 
         mVpnBlockedUidRanges = newVpnBlockedUidRanges;
@@ -7473,7 +7477,7 @@
 
         // update filtering rules, need to happen after the interface update so netd knows about the
         // new interface (the interface name -> index map becomes initialized)
-        updateVpnFiltering(newLp, oldLp, networkAgent);
+        updateVpnFiltering(newLp, oldLp, networkAgent, false /* force */);
 
         updateMtu(newLp, oldLp);
         // TODO - figure out what to do for clat
@@ -7741,7 +7745,7 @@
     }
 
     private void updateVpnFiltering(LinkProperties newLp, LinkProperties oldLp,
-            NetworkAgentInfo nai) {
+            NetworkAgentInfo nai, boolean force) {
         final String oldIface = getVpnIsolationInterface(nai, nai.networkCapabilities, oldLp);
         final String newIface = getVpnIsolationInterface(nai, nai.networkCapabilities, newLp);
         final boolean wasFiltering = requiresVpnAllowRule(nai, oldLp, oldIface);
@@ -7752,7 +7756,7 @@
             return;
         }
 
-        if (Objects.equals(oldIface, newIface) && (wasFiltering == needsFiltering)) {
+        if (!force && Objects.equals(oldIface, newIface) && (wasFiltering == needsFiltering)) {
             // Nothing changed.
             return;
         }
@@ -7773,9 +7777,13 @@
         // by overriding the Lockdown blocking rule.
         if (wasFiltering) {
             mPermissionMonitor.onVpnUidRangesRemoved(oldIface, ranges, vpnAppUid);
+            mPermissionMonitor.updateVpnLockdownUidInterfaceRules(oldLp.getInterfaceName(), ranges,
+                    vpnAppUid, false /* add */);
         }
         if (needsFiltering) {
             mPermissionMonitor.onVpnUidRangesAdded(newIface, ranges, vpnAppUid);
+            mPermissionMonitor.updateVpnLockdownUidInterfaceRules(newLp.getInterfaceName(), ranges,
+                    vpnAppUid, true /* add */);
         }
     }
 
@@ -8251,9 +8259,15 @@
             if (wasFiltering && !prevRanges.isEmpty()) {
                 mPermissionMonitor.onVpnUidRangesRemoved(oldIface, prevRanges,
                         prevNc.getOwnerUid());
+                mPermissionMonitor.updateVpnLockdownUidInterfaceRules(
+                        nai.linkProperties.getInterfaceName(), prevRanges, prevNc.getOwnerUid(),
+                        false /* add */);
             }
             if (shouldFilter && !newRanges.isEmpty()) {
                 mPermissionMonitor.onVpnUidRangesAdded(newIface, newRanges, newNc.getOwnerUid());
+                mPermissionMonitor.updateVpnLockdownUidInterfaceRules(
+                        nai.linkProperties.getInterfaceName(), newRanges, newNc.getOwnerUid(),
+                        true /* add */);
             }
         } catch (Exception e) {
             // Never crash!
diff --git a/service/src/com/android/server/connectivity/PermissionMonitor.java b/service/src/com/android/server/connectivity/PermissionMonitor.java
index 0e265f9..1bab186 100755
--- a/service/src/com/android/server/connectivity/PermissionMonitor.java
+++ b/service/src/com/android/server/connectivity/PermissionMonitor.java
@@ -928,6 +928,7 @@
         // packets to that UID is fine.
         final Set<Integer> changedUids = intersectUids(rangesToAdd, mAllApps);
         removeBypassingUids(changedUids, vpnAppUid);
+        removeVpnLockdownUids(iface, changedUids);
         updateVpnUidsInterfaceRules(iface, changedUids, true /* add */);
         if (mVpnInterfaceUidRanges.containsKey(iface)) {
             mVpnInterfaceUidRanges.get(iface).addAll(rangesToAdd);
@@ -950,6 +951,7 @@
         // ranges and update Netd about them.
         final Set<Integer> changedUids = intersectUids(rangesToRemove, mAllApps);
         removeBypassingUids(changedUids, vpnAppUid);
+        removeVpnLockdownUids(iface, changedUids);
         updateVpnUidsInterfaceRules(iface, changedUids, false /* add */);
         Set<UidRange> existingRanges = mVpnInterfaceUidRanges.getOrDefault(iface, null);
         if (existingRanges == null) {
@@ -963,6 +965,27 @@
     }
 
     /**
+     * Called when a set of UID ranges are added/removed from an active VPN network and when
+     * UID ranges under VPN Lockdown are updated
+     *
+     * @param iface The VPN network's interface name. Null iface indicates that the interface is not
+     *              available.
+     * @param rangesToModify Existing UID ranges to be modified on the VPN network
+     * @param add {@code true} to add the UID rules, {@code false} to remove them.
+     * @param vpnAppUid The uid of the VPN app
+     */
+    public synchronized void updateVpnLockdownUidInterfaceRules(@Nullable String iface,
+            Set<UidRange> rangesToModify, int vpnAppUid, boolean add) {
+        if (iface != null) {
+            Set<Integer> uidsToModify = intersectUids(rangesToModify, mAllApps);
+            removeBypassingUids(uidsToModify, vpnAppUid);
+            Set<Integer> vpnLockdownUids = intersectUids(mVpnLockdownUidRanges.getSet(), mAllApps);
+            uidsToModify.retainAll(vpnLockdownUids);
+            updateVpnUidsInterfaceRules(iface, uidsToModify, add);
+        }
+    }
+
+    /**
      * Called when UID ranges under VPN Lockdown are updated
      *
      * @param add {@code true} if the uids are to be added to the Lockdown, {@code false} if they
@@ -1050,6 +1073,18 @@
     }
 
     /**
+     * Remove all apps which are under VPN Lockdown from the list of uids
+     *
+     * @param iface The interface name of the active VPN connection
+     * @param uids The list of uids to operate on
+     */
+    private void removeVpnLockdownUids(@Nullable String iface, Set<Integer> uids) {
+        if (iface == null) {
+            uids.removeAll(intersectUids(mVpnLockdownUidRanges.getSet(), mAllApps));
+        }
+    }
+
+    /**
      * Update netd about the list of uids that are under an active VPN connection which they cannot
      * bypass.
      *