diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index e0cd279..2c44b62 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -1938,8 +1938,8 @@
         mUseDeclaredMethodsForCallbacksEnabled =
                 mDeps.isFeatureNotChickenedOut(context,
                         ConnectivityFlags.USE_DECLARED_METHODS_FOR_CALLBACKS);
-        mQueueNetworkAgentEventsInSystemServer =
-                mDeps.isFeatureNotChickenedOut(context,
+        mQueueNetworkAgentEventsInSystemServer = mDeps.isAtLeastB()
+                && mDeps.isFeatureNotChickenedOut(context,
                         ConnectivityFlags.QUEUE_NETWORK_AGENT_EVENTS_IN_SYSTEM_SERVER);
         // registerUidFrozenStateChangedCallback is only available on U+
         mQueueCallbacksForFrozenApps = mDeps.isAtLeastU()
diff --git a/tests/unit/java/com/android/server/ConnectivityServiceTest.java b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
index 67cb1a4..8c90e01 100755
--- a/tests/unit/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/unit/java/com/android/server/ConnectivityServiceTest.java
@@ -2241,7 +2241,8 @@
         private static final int VERSION_T = 3;
         private static final int VERSION_U = 4;
         private static final int VERSION_V = 5;
-        private static final int VERSION_MAX = VERSION_V;
+        private static final int VERSION_B = 6;
+        private static final int VERSION_MAX = VERSION_B;
         private int mSdkLevel = VERSION_UNMOCKED;
 
         private void setBuildSdk(final int sdkLevel) {
@@ -2271,6 +2272,12 @@
         }
 
         @Override
+        public boolean isAtLeastB() {
+            return mSdkLevel == VERSION_UNMOCKED ? super.isAtLeastB()
+                    : mSdkLevel >= VERSION_B;
+        }
+
+        @Override
         public BpfNetMaps getBpfNetMaps(Context context, INetd netd,
                 InterfaceTracker interfaceTracker) {
             return mBpfNetMaps;