diff --git a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
index 0f777d5..74eb87b 100644
--- a/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
+++ b/Tethering/src/com/android/networkstack/tethering/BpfCoordinator.java
@@ -426,7 +426,8 @@
      * See NetlinkMonitor#handlePacket, NetlinkMessage#parseNfMessage.
      */
     public void startMonitoring(@NonNull final IpServer ipServer) {
-        if (!isUsingBpf()) return;
+        // TODO: Wrap conntrackMonitor starting function into mBpfCoordinatorShim.
+        if (!isUsingBpf() || !mDeps.isAtLeastS()) return;
 
         if (mMonitoringIpServers.contains(ipServer)) {
             Log.wtf(TAG, "The same downstream " + ipServer.interfaceName()
@@ -447,6 +448,9 @@
      * Note that this can be only called on handler thread.
      */
     public void stopMonitoring(@NonNull final IpServer ipServer) {
+        // TODO: Wrap conntrackMonitor stopping function into mBpfCoordinatorShim.
+        if (!isUsingBpf() || !mDeps.isAtLeastS()) return;
+
         mMonitoringIpServers.remove(ipServer);
 
         if (!mMonitoringIpServers.isEmpty()) return;
diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
index ba4ed47..f508f69 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/BpfCoordinatorTest.java
@@ -1150,6 +1150,7 @@
     }
 
     @Test
+    @IgnoreUpTo(Build.VERSION_CODES.R)
     public void testStartStopConntrackMonitoring() throws Exception {
         setupFunctioningNetdInterface();
 
@@ -1170,6 +1171,7 @@
     }
 
     @Test
+    @IgnoreUpTo(Build.VERSION_CODES.R)
     public void testStartStopConntrackMonitoringWithTwoDownstreamIfaces() throws Exception {
         setupFunctioningNetdInterface();