diff --git a/core/java/android/net/CaptivePortal.java b/core/java/android/net/CaptivePortal.java
index ee05f28..4047068 100644
--- a/core/java/android/net/CaptivePortal.java
+++ b/core/java/android/net/CaptivePortal.java
@@ -15,6 +15,8 @@
  */
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.os.IBinder;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -28,10 +30,16 @@
  */
 public class CaptivePortal implements Parcelable {
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int APP_RETURN_DISMISSED    = 0;
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int APP_RETURN_UNWANTED     = 1;
     /** @hide */
+    @SystemApi
+    @TestApi
     public static final int APP_RETURN_WANTED_AS_IS = 2;
 
     private final IBinder mBinder;
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index abc00fe..cee3a40 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -23,6 +23,7 @@
 import android.annotation.SdkConstant.SdkConstantType;
 import android.annotation.SystemApi;
 import android.annotation.SystemService;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
 import android.app.PendingIntent;
 import android.content.Context;
@@ -255,6 +256,8 @@
      * portal login activity.
      * {@hide}
      */
+    @SystemApi
+    @TestApi
     public static final String EXTRA_CAPTIVE_PORTAL_PROBE_SPEC =
             "android.net.extra.CAPTIVE_PORTAL_PROBE_SPEC";
 
@@ -262,6 +265,8 @@
      * Key for passing a user agent string to the captive portal login activity.
      * {@hide}
      */
+    @SystemApi
+    @TestApi
     public static final String EXTRA_CAPTIVE_PORTAL_USER_AGENT =
             "android.net.extra.CAPTIVE_PORTAL_USER_AGENT";
 
diff --git a/core/java/android/net/LinkAddress.java b/core/java/android/net/LinkAddress.java
index b40f15a..a536d08 100644
--- a/core/java/android/net/LinkAddress.java
+++ b/core/java/android/net/LinkAddress.java
@@ -26,6 +26,7 @@
 import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
 
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
@@ -117,7 +118,8 @@
      * @return true if the address is IPv6.
      * @hide
      */
-    @UnsupportedAppUsage
+    @TestApi
+    @SystemApi
     public boolean isIPv6() {
         return address instanceof Inet6Address;
     }
@@ -126,6 +128,8 @@
      * @return true if the address is IPv4 or is a mapped IPv4 address.
      * @hide
      */
+    @TestApi
+    @SystemApi
     public boolean isIPv4() {
         return address instanceof Inet4Address;
     }
@@ -263,7 +267,8 @@
      * otherwise.
      * @hide
      */
-    @UnsupportedAppUsage
+    @TestApi
+    @SystemApi
     public boolean isSameAddressAs(LinkAddress other) {
         return address.equals(other.address) && prefixLength == other.prefixLength;
     }
@@ -310,6 +315,8 @@
      * Returns true if this {@code LinkAddress} is global scope and preferred.
      * @hide
      */
+    @TestApi
+    @SystemApi
     public boolean isGlobalPreferred() {
         /**
          * Note that addresses flagged as IFA_F_OPTIMISTIC are
diff --git a/core/java/android/net/MacAddress.java b/core/java/android/net/MacAddress.java
index 058cb94..c2b7d2c 100644
--- a/core/java/android/net/MacAddress.java
+++ b/core/java/android/net/MacAddress.java
@@ -52,6 +52,8 @@
 
     /**
      * The MacAddress zero MAC address.
+     *
+     * <p>Not publicly exposed or treated specially since the OUI 00:00:00 is registered.
      * @hide
      */
     @UnsupportedAppUsage
diff --git a/core/java/android/net/Network.java b/core/java/android/net/Network.java
index bf2344d..2c831de 100644
--- a/core/java/android/net/Network.java
+++ b/core/java/android/net/Network.java
@@ -16,6 +16,8 @@
 
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -157,6 +159,8 @@
      *
      * @hide
      */
+    @TestApi
+    @SystemApi
     public Network getPrivateDnsBypassingCopy() {
         return new Network(netId, true);
     }
diff --git a/core/java/android/net/RouteInfo.java b/core/java/android/net/RouteInfo.java
index 37ab9ff..6bf2c67 100644
--- a/core/java/android/net/RouteInfo.java
+++ b/core/java/android/net/RouteInfo.java
@@ -16,16 +16,17 @@
 
 package android.net;
 
+import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UnsupportedAppUsage;
 import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
 
-import java.net.UnknownHostException;
-import java.net.InetAddress;
 import java.net.Inet4Address;
 import java.net.Inet6Address;
-
+import java.net.InetAddress;
+import java.net.UnknownHostException;
 import java.util.Collection;
 import java.util.Objects;
 
@@ -67,12 +68,18 @@
 
 
     /** Unicast route. @hide */
+    @SystemApi
+    @TestApi
     public static final int RTN_UNICAST = 1;
 
     /** Unreachable route. @hide */
+    @SystemApi
+    @TestApi
     public static final int RTN_UNREACHABLE = 7;
 
     /** Throw route. @hide */
+    @SystemApi
+    @TestApi
     public static final int RTN_THROW = 9;
 
     /**
@@ -317,6 +324,8 @@
      *
      * @hide
      */
+    @TestApi
+    @SystemApi
     public int getType() {
         return mType;
     }
@@ -362,9 +371,7 @@
      * ({@code false}).
      *
      * @return {@code true} if a gateway is specified
-     * @hide
      */
-    @UnsupportedAppUsage
     public boolean hasGateway() {
         return mHasGateway;
     }
diff --git a/services/net/java/android/net/apf/ApfCapabilities.java b/core/java/android/net/apf/ApfCapabilities.java
similarity index 78%
rename from services/net/java/android/net/apf/ApfCapabilities.java
rename to core/java/android/net/apf/ApfCapabilities.java
index dec8ca2..f28cdc9 100644
--- a/services/net/java/android/net/apf/ApfCapabilities.java
+++ b/core/java/android/net/apf/ApfCapabilities.java
@@ -38,18 +38,28 @@
      */
     public final int apfPacketFormat;
 
-    public ApfCapabilities(int apfVersionSupported, int maximumApfProgramSize, int apfPacketFormat)
-    {
+    public ApfCapabilities(
+            int apfVersionSupported, int maximumApfProgramSize, int apfPacketFormat) {
         this.apfVersionSupported = apfVersionSupported;
         this.maximumApfProgramSize = maximumApfProgramSize;
         this.apfPacketFormat = apfPacketFormat;
     }
 
+    @Override
     public String toString() {
         return String.format("%s{version: %d, maxSize: %d, format: %d}", getClass().getSimpleName(),
                 apfVersionSupported, maximumApfProgramSize, apfPacketFormat);
     }
 
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof  ApfCapabilities)) return false;
+        final ApfCapabilities other = (ApfCapabilities) obj;
+        return apfVersionSupported == other.apfVersionSupported
+                && maximumApfProgramSize == other.maximumApfProgramSize
+                && apfPacketFormat == other.apfPacketFormat;
+    }
+
     /**
      * Returns true if the APF interpreter advertises support for the data buffer access opcodes
      * LDDW and STDW.
diff --git a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
index 0f8fc17..8a3cdca 100644
--- a/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
+++ b/services/core/java/com/android/server/connectivity/KeepaliveTracker.java
@@ -185,13 +185,13 @@
         }
 
         void start(int slot) {
+            mSlot = slot;
             int error = isValid();
             if (error == SUCCESS) {
-                mSlot = slot;
                 Log.d(TAG, "Starting keepalive " + mSlot + " on " + mNai.name());
                 mNai.asyncChannel.sendMessage(CMD_START_PACKET_KEEPALIVE, slot, mInterval, mPacket);
             } else {
-                notifyMessenger(NO_KEEPALIVE, error);
+                handleStopKeepalive(mNai, mSlot, error);
                 return;
             }
         }
@@ -277,6 +277,7 @@
             return;
         }
         ki.stop(reason);
+        Log.d(TAG, "Stopped keepalive " + slot + " on " + networkName);
         networkKeepalives.remove(slot);
         if (networkKeepalives.isEmpty()) {
             mKeepalives.remove(nai);
diff --git a/tests/net/java/android/net/ipmemorystore/ParcelableTests.java b/tests/net/java/android/net/ipmemorystore/ParcelableTests.java
index a9f9758..1fc67a8 100644
--- a/tests/net/java/android/net/ipmemorystore/ParcelableTests.java
+++ b/tests/net/java/android/net/ipmemorystore/ParcelableTests.java
@@ -27,6 +27,7 @@
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.lang.reflect.Modifier;
 import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.util.Arrays;
@@ -60,6 +61,12 @@
         builder.setMtu(null);
         in = builder.build();
         assertEquals(in, new NetworkAttributes(parcelingRoundTrip(in.toParcelable())));
+
+        // Verify that this test does not miss any new field added later.
+        // If any field is added to NetworkAttributes it must be tested here for parceling
+        // roundtrip.
+        assertEquals(4, Arrays.stream(NetworkAttributes.class.getDeclaredFields())
+                .filter(f -> !Modifier.isStatic(f.getModifiers())).count());
     }
 
     @Test
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index 882babf..1c26418 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -4775,7 +4775,7 @@
 
         // Clat iface up, expect stack link updated.
         clat.interfaceLinkStateChanged(CLAT_PREFIX + MOBILE_IFNAME, true);
-        waitForIdle();
+        networkCallback.expectCallback(CallbackState.LINK_PROPERTIES, mCellNetworkAgent);
         List<LinkProperties> stackedLps = mCm.getLinkProperties(mCellNetworkAgent.getNetwork())
                 .getStackedLinks();
         assertEquals(makeClatLinkProperties(myIpv4), stackedLps.get(0));
@@ -4783,7 +4783,6 @@
         // Change trivial linkproperties and see if stacked link is preserved.
         cellLp.addDnsServer(InetAddress.getByName("8.8.8.8"));
         mCellNetworkAgent.sendLinkProperties(cellLp);
-        waitForIdle();
         networkCallback.expectCallback(CallbackState.LINK_PROPERTIES, mCellNetworkAgent);
 
         List<LinkProperties> stackedLpsAfterChange =
@@ -4795,19 +4794,19 @@
         cellLp.addLinkAddress(myIpv4);
         cellLp.addRoute(new RouteInfo(myIpv4, null, MOBILE_IFNAME));
         mCellNetworkAgent.sendLinkProperties(cellLp);
-        waitForIdle();
         networkCallback.expectCallback(CallbackState.LINK_PROPERTIES, mCellNetworkAgent);
         verify(mMockNetd, times(1)).clatdStop(MOBILE_IFNAME);
 
         // Clat iface removed, expect linkproperties revert to original one
         clat.interfaceRemoved(CLAT_PREFIX + MOBILE_IFNAME);
-        waitForIdle();
         networkCallback.expectCallback(CallbackState.LINK_PROPERTIES, mCellNetworkAgent);
         LinkProperties actualLpAfterIpv4 = mCm.getLinkProperties(mCellNetworkAgent.getNetwork());
         assertEquals(cellLp, actualLpAfterIpv4);
 
         // Clean up
         mCellNetworkAgent.disconnect();
+        networkCallback.expectCallback(CallbackState.LOST, mCellNetworkAgent);
+        networkCallback.assertNoCallback();
         mCm.unregisterNetworkCallback(networkCallback);
     }