diff --git a/framework/src/android/net/LinkProperties.java b/framework/src/android/net/LinkProperties.java
index e41ed72..99f48b4 100644
--- a/framework/src/android/net/LinkProperties.java
+++ b/framework/src/android/net/LinkProperties.java
@@ -686,8 +686,8 @@
     }
 
     /**
-     * Adds a {@link RouteInfo} to this {@code LinkProperties}, if a {@link RouteInfo}
-     * with the same {@link RouteInfo.RouteKey} with different properties
+     * Adds a {@link RouteInfo} to this {@code LinkProperties}. If there is a {@link RouteInfo}
+     * with the same destination, gateway and interface with different properties
      * (e.g., different MTU), it will be updated. If the {@link RouteInfo} had an
      * interface name set and that differs from the interface set for this
      * {@code LinkProperties} an {@link IllegalArgumentException} will be thrown.
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 27228f7..a39f8f6 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -6144,6 +6144,7 @@
     @Override
     public int registerNetworkProvider(Messenger messenger, String name) {
         enforceNetworkFactoryOrSettingsPermission();
+        Objects.requireNonNull(messenger, "messenger must be non-null");
         NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger,
                 nextNetworkProviderId(), () -> unregisterNetworkProvider(messenger));
         mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi));
@@ -9076,6 +9077,7 @@
     @Override
     public void unregisterConnectivityDiagnosticsCallback(
             @NonNull IConnectivityDiagnosticsCallback callback) {
+        Objects.requireNonNull(callback, "callback must be non-null");
         mConnectivityDiagnosticsHandler.sendMessage(
                 mConnectivityDiagnosticsHandler.obtainMessage(
                         ConnectivityDiagnosticsHandler
@@ -9446,6 +9448,7 @@
      */
     @Override
     public void unregisterQosCallback(@NonNull final IQosCallback callback) {
+        Objects.requireNonNull(callback, "callback must be non-null");
         mQosCallbackTracker.unregisterCallback(callback);
     }
 
diff --git a/tests/net/common/java/android/net/NetworkAgentConfigTest.kt b/tests/net/common/java/android/net/NetworkAgentConfigTest.kt
index 454d5b5..2b45b3d 100644
--- a/tests/net/common/java/android/net/NetworkAgentConfigTest.kt
+++ b/tests/net/common/java/android/net/NetworkAgentConfigTest.kt
@@ -44,6 +44,9 @@
             setSubscriberId("MySubId")
             setPartialConnectivityAcceptable(false)
             setUnvalidatedConnectivityAcceptable(true)
+            if (isAtLeastS()) {
+                setBypassableVpn(true)
+            }
         }.build()
         if (isAtLeastS()) {
             // From S, the config will have 12 items
@@ -66,6 +69,7 @@
             if (isAtLeastS()) {
                 setNat64DetectionEnabled(false)
                 setProvisioningNotificationEnabled(false)
+                setBypassableVpn(true)
             }
         }.build()
 
@@ -78,6 +82,7 @@
         if (isAtLeastS()) {
             assertFalse(config.isNat64DetectionEnabled())
             assertFalse(config.isProvisioningNotificationEnabled())
+            assertTrue(config.isBypassableVpn())
         } else {
             assertTrue(config.isNat64DetectionEnabled())
             assertTrue(config.isProvisioningNotificationEnabled())