diff --git a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
index 687171b..c0f5c61 100644
--- a/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
+++ b/Tethering/tests/unit/src/com/android/networkstack/tethering/TetheringTest.java
@@ -3541,6 +3541,29 @@
         assertEquals(expectedTypes.size() > 0, mTethering.isTetheringSupported());
         callback.expectSupportedTetheringTypes(expectedTypes);
     }
+
+    @Test
+    public void testIpv4AddressForSapAndLohsConcurrency() throws Exception {
+        mTethering.interfaceStatusChanged(TEST_WLAN_IFNAME, true);
+        sendWifiApStateChanged(WIFI_AP_STATE_ENABLED, TEST_WLAN_IFNAME, IFACE_IP_MODE_TETHERED);
+
+        ArgumentCaptor<InterfaceConfigurationParcel> ifaceConfigCaptor =
+                ArgumentCaptor.forClass(InterfaceConfigurationParcel.class);
+        verify(mNetd).interfaceSetCfg(ifaceConfigCaptor.capture());
+        InterfaceConfigurationParcel ifaceConfig = ifaceConfigCaptor.getValue();
+        final IpPrefix sapPrefix = new IpPrefix(
+                InetAddresses.parseNumericAddress(ifaceConfig.ipv4Addr), ifaceConfig.prefixLength);
+
+        mTethering.interfaceStatusChanged(TEST_WLAN2_IFNAME, true);
+        sendWifiApStateChanged(WIFI_AP_STATE_ENABLED, TEST_WLAN2_IFNAME, IFACE_IP_MODE_LOCAL_ONLY);
+
+        ifaceConfigCaptor = ArgumentCaptor.forClass(InterfaceConfigurationParcel.class);
+        verify(mNetd, times(2)).interfaceSetCfg(ifaceConfigCaptor.capture());
+        ifaceConfig = ifaceConfigCaptor.getValue();
+        final IpPrefix lohsPrefix = new IpPrefix(
+                InetAddresses.parseNumericAddress(ifaceConfig.ipv4Addr), ifaceConfig.prefixLength);
+        assertFalse(sapPrefix.equals(lohsPrefix));
+    }
     // TODO: Test that a request for hotspot mode doesn't interfere with an
     // already operating tethering mode interface.
 }
diff --git a/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java b/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
index 84faf12..2d5bb00 100644
--- a/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
+++ b/service-t/src/com/android/server/connectivity/mdns/EnqueueMdnsQueryCallable.java
@@ -29,7 +29,6 @@
 import java.io.IOException;
 import java.lang.ref.WeakReference;
 import java.net.DatagramPacket;
-import java.net.InetAddress;
 import java.net.InetSocketAddress;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -78,6 +77,7 @@
     private final List<MdnsResponse> servicesToResolve;
     @NonNull
     private final MdnsResponseDecoder.Clock clock;
+    private final boolean onlyUseIpv6OnIpv6OnlyNetworks;
 
     EnqueueMdnsQueryCallable(
             @NonNull MdnsSocketClientBase requestSender,
@@ -87,6 +87,7 @@
             boolean expectUnicastResponse,
             int transactionId,
             @Nullable Network network,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks,
             boolean sendDiscoveryQueries,
             @NonNull Collection<MdnsResponse> servicesToResolve,
             @NonNull MdnsResponseDecoder.Clock clock) {
@@ -97,6 +98,7 @@
         this.expectUnicastResponse = expectUnicastResponse;
         this.transactionId = transactionId;
         this.network = network;
+        this.onlyUseIpv6OnIpv6OnlyNetworks = onlyUseIpv6OnIpv6OnlyNetworks;
         this.sendDiscoveryQueries = sendDiscoveryQueries;
         this.servicesToResolve = new ArrayList<>(servicesToResolve);
         this.clock = clock;
@@ -128,24 +130,29 @@
             for (MdnsResponse response : servicesToResolve) {
                 final String[] serviceName = response.getServiceName();
                 if (serviceName == null) continue;
-                if (!response.hasTextRecord() || MdnsUtils.isRecordRenewalNeeded(
-                        response.getTextRecord(), now)) {
-                    missingKnownAnswerRecords.add(new Pair<>(serviceName, MdnsRecord.TYPE_TXT));
-                }
-                if (!response.hasServiceRecord() || MdnsUtils.isRecordRenewalNeeded(
-                        response.getServiceRecord(), now)) {
-                    missingKnownAnswerRecords.add(new Pair<>(serviceName, MdnsRecord.TYPE_SRV));
-                    // The hostname is not yet known, so queries for address records will be sent
-                    // the next time the EnqueueMdnsQueryCallable is enqueued if the reply does not
-                    // contain them. In practice, advertisers should include the address records
-                    // when queried for SRV, although it's not a MUST requirement (RFC6763 12.2).
-                    // TODO: Figure out how to renew the A/AAAA record. Usually A/AAAA record will
-                    //  be included in the response to the SRV record so in high chances there is
-                    //  no need to renew them individually.
-                } else if (!response.hasInet4AddressRecord() && !response.hasInet6AddressRecord()) {
-                    final String[] host = response.getServiceRecord().getServiceHost();
-                    missingKnownAnswerRecords.add(new Pair<>(host, MdnsRecord.TYPE_A));
-                    missingKnownAnswerRecords.add(new Pair<>(host, MdnsRecord.TYPE_AAAA));
+                boolean renewTxt = !response.hasTextRecord() || MdnsUtils.isRecordRenewalNeeded(
+                        response.getTextRecord(), now);
+                boolean renewSrv = !response.hasServiceRecord() || MdnsUtils.isRecordRenewalNeeded(
+                        response.getServiceRecord(), now);
+                if (renewSrv && renewTxt) {
+                    missingKnownAnswerRecords.add(new Pair<>(serviceName, MdnsRecord.TYPE_ANY));
+                } else {
+                    if (renewTxt) {
+                        missingKnownAnswerRecords.add(new Pair<>(serviceName, MdnsRecord.TYPE_TXT));
+                    }
+                    if (renewSrv) {
+                        missingKnownAnswerRecords.add(new Pair<>(serviceName, MdnsRecord.TYPE_SRV));
+                        // The hostname is not yet known, so queries for address records will be
+                        // sent the next time the EnqueueMdnsQueryCallable is enqueued if the reply
+                        // does not contain them. In practice, advertisers should include the
+                        // address records when queried for SRV, although it's not a MUST
+                        // requirement (RFC6763 12.2).
+                    } else if (!response.hasInet4AddressRecord()
+                            && !response.hasInet6AddressRecord()) {
+                        final String[] host = response.getServiceRecord().getServiceHost();
+                        missingKnownAnswerRecords.add(new Pair<>(host, MdnsRecord.TYPE_A));
+                        missingKnownAnswerRecords.add(new Pair<>(host, MdnsRecord.TYPE_AAAA));
+                    }
                 }
             }
             numQuestions += missingKnownAnswerRecords.size();
@@ -183,24 +190,9 @@
                 writeQuestion(serviceTypeLabels, MdnsRecord.TYPE_PTR);
             }
 
-            if (requestSender instanceof MdnsMultinetworkSocketClient) {
-                sendPacketToIpv4AndIpv6(requestSender, MdnsConstants.MDNS_PORT, network);
-                for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
-                    sendPacketToIpv4AndIpv6(requestSender, emulatorPort, network);
-                }
-            } else if (requestSender instanceof MdnsSocketClient) {
-                final MdnsSocketClient client = (MdnsSocketClient) requestSender;
-                InetAddress mdnsAddress = MdnsConstants.getMdnsIPv4Address();
-                if (client.isOnIPv6OnlyNetwork()) {
-                    mdnsAddress = MdnsConstants.getMdnsIPv6Address();
-                }
-
-                sendPacketTo(client, new InetSocketAddress(mdnsAddress, MdnsConstants.MDNS_PORT));
-                for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
-                    sendPacketTo(client, new InetSocketAddress(mdnsAddress, emulatorPort));
-                }
-            } else {
-                throw new IOException("Unknown socket client type: " + requestSender.getClass());
+            sendPacketToIpv4AndIpv6(requestSender, MdnsConstants.MDNS_PORT);
+            for (Integer emulatorPort : castShellEmulatorMdnsPorts) {
+                sendPacketToIpv4AndIpv6(requestSender, emulatorPort);
             }
             return Pair.create(transactionId, subtypes);
         } catch (IOException e) {
@@ -218,38 +210,39 @@
                         | (expectUnicastResponse ? MdnsConstants.QCLASS_UNICAST : 0));
     }
 
-    private void sendPacketTo(MdnsSocketClient requestSender, InetSocketAddress address)
+    private void sendPacket(MdnsSocketClientBase requestSender, InetSocketAddress address)
             throws IOException {
         DatagramPacket packet = packetWriter.getPacket(address);
         if (expectUnicastResponse) {
-            requestSender.sendUnicastPacket(packet);
+            if (requestSender instanceof MdnsMultinetworkSocketClient) {
+                ((MdnsMultinetworkSocketClient) requestSender).sendPacketRequestingUnicastResponse(
+                        packet, network, onlyUseIpv6OnIpv6OnlyNetworks);
+            } else {
+                requestSender.sendPacketRequestingUnicastResponse(
+                        packet, onlyUseIpv6OnIpv6OnlyNetworks);
+            }
         } else {
-            requestSender.sendMulticastPacket(packet);
+            if (requestSender instanceof MdnsMultinetworkSocketClient) {
+                ((MdnsMultinetworkSocketClient) requestSender)
+                        .sendPacketRequestingMulticastResponse(
+                                packet, network, onlyUseIpv6OnIpv6OnlyNetworks);
+            } else {
+                requestSender.sendPacketRequestingMulticastResponse(
+                        packet, onlyUseIpv6OnIpv6OnlyNetworks);
+            }
         }
     }
 
-    private void sendPacketFromNetwork(MdnsSocketClientBase requestSender,
-            InetSocketAddress address, Network network)
-            throws IOException {
-        DatagramPacket packet = packetWriter.getPacket(address);
-        if (expectUnicastResponse) {
-            requestSender.sendUnicastPacket(packet, network);
-        } else {
-            requestSender.sendMulticastPacket(packet, network);
-        }
-    }
-
-    private void sendPacketToIpv4AndIpv6(MdnsSocketClientBase requestSender, int port,
-            Network network) {
+    private void sendPacketToIpv4AndIpv6(MdnsSocketClientBase requestSender, int port) {
         try {
-            sendPacketFromNetwork(requestSender,
-                    new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), port), network);
+            sendPacket(requestSender,
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), port));
         } catch (IOException e) {
             Log.i(TAG, "Can't send packet to IPv4", e);
         }
         try {
-            sendPacketFromNetwork(requestSender,
-                    new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), port), network);
+            sendPacket(requestSender,
+                    new InetSocketAddress(MdnsConstants.getMdnsIPv6Address(), port));
         } catch (IOException e) {
             Log.i(TAG, "Can't send packet to IPv6", e);
         }
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
index d0ca20e..1253444 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClient.java
@@ -213,17 +213,21 @@
         return true;
     }
 
-    private void sendMdnsPacket(@NonNull DatagramPacket packet, @Nullable Network targetNetwork) {
+    private void sendMdnsPacket(@NonNull DatagramPacket packet, @Nullable Network targetNetwork,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         final boolean isIpv6 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
                 instanceof Inet6Address;
         final boolean isIpv4 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
                 instanceof Inet4Address;
         final ArrayMap<MdnsInterfaceSocket, SocketKey> activeSockets = getActiveSockets();
+        boolean shouldQueryIpv6 = !onlyUseIpv6OnIpv6OnlyNetworks || isIpv6OnlyNetworks(
+                activeSockets, targetNetwork);
         for (int i = 0; i < activeSockets.size(); i++) {
             final MdnsInterfaceSocket socket = activeSockets.keyAt(i);
             final Network network = activeSockets.valueAt(i).getNetwork();
             // Check ip capability and network before sending packet
-            if (((isIpv6 && socket.hasJoinedIpv6()) || (isIpv4 && socket.hasJoinedIpv4()))
+            if (((isIpv6 && socket.hasJoinedIpv6() && shouldQueryIpv6)
+                    || (isIpv4 && socket.hasJoinedIpv4()))
                     // Contrary to MdnsUtils.isNetworkMatched, only send packets targeting
                     // the null network to interfaces that have the null network (tethering
                     // downstream interfaces).
@@ -237,6 +241,19 @@
         }
     }
 
+    private boolean isIpv6OnlyNetworks(
+            @NonNull ArrayMap<MdnsInterfaceSocket, SocketKey> activeSockets,
+            @Nullable Network targetNetwork) {
+        for (int i = 0; i < activeSockets.size(); i++) {
+            final MdnsInterfaceSocket socket = activeSockets.keyAt(i);
+            final Network network = activeSockets.valueAt(i).getNetwork();
+            if (Objects.equals(network, targetNetwork) && socket.hasJoinedIpv4()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     private void processResponsePacket(byte[] recvbuf, int length, @NonNull SocketKey socketKey) {
         int packetNumber = ++mReceivedPacketNumber;
 
@@ -259,21 +276,38 @@
     }
 
     /**
-     * Sends a mDNS request packet via given network that asks for multicast response. Null network
-     * means sending packet via all networks.
+     * Send a mDNS request packet via given network that asks for multicast response.
+     *
+     * <p>The socket client may use a null network to identify some or all interfaces, in which case
+     * passing null sends the packet to these.
      */
+    public void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+            @Nullable Network network, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+        mHandler.post(() -> sendMdnsPacket(packet, network, onlyUseIpv6OnIpv6OnlyNetworks));
+    }
+
     @Override
-    public void sendMulticastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
-        mHandler.post(() -> sendMdnsPacket(packet, network));
+    public void sendPacketRequestingMulticastResponse(
+            @NonNull DatagramPacket packet, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+        sendPacketRequestingMulticastResponse(
+                packet, null /* network */, onlyUseIpv6OnIpv6OnlyNetworks);
     }
 
     /**
-     * Sends a mDNS request packet via given network that asks for unicast response. Null network
-     * means sending packet via all networks.
+     * Send a mDNS request packet via given network that asks for unicast response.
+     *
+     * <p>The socket client may use a null network to identify some or all interfaces, in which case
+     * passing null sends the packet to these.
      */
-    @Override
-    public void sendUnicastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
-        // TODO: Separate unicast packet.
-        mHandler.post(() -> sendMdnsPacket(packet, network));
+    public void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+            @Nullable Network network, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+        mHandler.post(() -> sendMdnsPacket(packet, network, onlyUseIpv6OnIpv6OnlyNetworks));
     }
-}
+
+    @Override
+    public void sendPacketRequestingUnicastResponse(
+            @NonNull DatagramPacket packet, boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+        sendPacketRequestingUnicastResponse(
+                packet, null /* network */, onlyUseIpv6OnIpv6OnlyNetworks);
+    }
+}
\ No newline at end of file
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
index 3da6bd0..98c80ee 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSearchOptions.java
@@ -44,10 +44,13 @@
             new Parcelable.Creator<MdnsSearchOptions>() {
                 @Override
                 public MdnsSearchOptions createFromParcel(Parcel source) {
-                    return new MdnsSearchOptions(source.createStringArrayList(),
-                            source.readBoolean(), source.readBoolean(),
+                    return new MdnsSearchOptions(
+                            source.createStringArrayList(),
+                            source.readBoolean(),
+                            source.readBoolean(),
                             source.readParcelable(null),
-                            source.readString());
+                            source.readString(),
+                            (source.dataAvail() > 0) ? source.readBoolean() : false);
                 }
 
                 @Override
@@ -61,18 +64,25 @@
     private final String resolveInstanceName;
 
     private final boolean isPassiveMode;
+    private final boolean onlyUseIpv6OnIpv6OnlyNetworks;
     private final boolean removeExpiredService;
     // The target network for searching. Null network means search on all possible interfaces.
     @Nullable private final Network mNetwork;
 
     /** Parcelable constructs for a {@link MdnsSearchOptions}. */
-    MdnsSearchOptions(List<String> subtypes, boolean isPassiveMode, boolean removeExpiredService,
-            @Nullable Network network, @Nullable String resolveInstanceName) {
+    MdnsSearchOptions(
+            List<String> subtypes,
+            boolean isPassiveMode,
+            boolean removeExpiredService,
+            @Nullable Network network,
+            @Nullable String resolveInstanceName,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         this.subtypes = new ArrayList<>();
         if (subtypes != null) {
             this.subtypes.addAll(subtypes);
         }
         this.isPassiveMode = isPassiveMode;
+        this.onlyUseIpv6OnIpv6OnlyNetworks = onlyUseIpv6OnIpv6OnlyNetworks;
         this.removeExpiredService = removeExpiredService;
         mNetwork = network;
         this.resolveInstanceName = resolveInstanceName;
@@ -104,6 +114,14 @@
         return isPassiveMode;
     }
 
+    /**
+     * @return {@code true} if only the IPv4 mDNS host should be queried on network that supports
+     * both IPv6 as well as IPv4. On an IPv6-only network, this is ignored.
+     */
+    public boolean onlyUseIpv6OnIpv6OnlyNetworks() {
+        return onlyUseIpv6OnIpv6OnlyNetworks;
+    }
+
     /** Returns {@code true} if service will be removed after its TTL expires. */
     public boolean removeExpiredService() {
         return removeExpiredService;
@@ -140,12 +158,14 @@
         out.writeBoolean(removeExpiredService);
         out.writeParcelable(mNetwork, 0);
         out.writeString(resolveInstanceName);
+        out.writeBoolean(onlyUseIpv6OnIpv6OnlyNetworks);
     }
 
     /** A builder to create {@link MdnsSearchOptions}. */
     public static final class Builder {
         private final Set<String> subtypes;
         private boolean isPassiveMode = true;
+        private boolean onlyUseIpv6OnIpv6OnlyNetworks = false;
         private boolean removeExpiredService;
         private Network mNetwork;
         private String resolveInstanceName;
@@ -190,6 +210,15 @@
         }
 
         /**
+         * Sets if only the IPv4 mDNS host should be queried on a network that is both IPv4 & IPv6.
+         * On an IPv6-only network, this is ignored.
+         */
+        public Builder setOnlyUseIpv6OnIpv6OnlyNetworks(boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+            this.onlyUseIpv6OnIpv6OnlyNetworks = onlyUseIpv6OnIpv6OnlyNetworks;
+            return this;
+        }
+
+        /**
          * Sets if the service should be removed after TTL.
          *
          * @param removeExpiredService If set to {@code true}, the service will be removed after TTL
@@ -223,8 +252,13 @@
 
         /** Builds a {@link MdnsSearchOptions} with the arguments supplied to this builder. */
         public MdnsSearchOptions build() {
-            return new MdnsSearchOptions(new ArrayList<>(subtypes), isPassiveMode,
-                    removeExpiredService, mNetwork, resolveInstanceName);
+            return new MdnsSearchOptions(
+                    new ArrayList<>(subtypes),
+                    isPassiveMode,
+                    removeExpiredService,
+                    mNetwork,
+                    resolveInstanceName,
+                    onlyUseIpv6OnIpv6OnlyNetworks);
         }
     }
 }
\ No newline at end of file
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
index bdc673e..a36eb1b 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsServiceTypeClient.java
@@ -198,6 +198,7 @@
             final QueryTaskConfig taskConfig = new QueryTaskConfig(
                     searchOptions.getSubtypes(),
                     searchOptions.isPassiveMode(),
+                    searchOptions.onlyUseIpv6OnIpv6OnlyNetworks(),
                     currentSessionId,
                     socketKey);
             if (hadReply) {
@@ -220,7 +221,7 @@
         final boolean matchesInstanceName = options.getResolveInstanceName() == null
                 // DNS is case-insensitive, so ignore case in the comparison
                 || MdnsUtils.equalsIgnoreDnsCase(options.getResolveInstanceName(),
-                        response.getServiceInstanceName());
+                response.getServiceInstanceName());
 
         // If discovery is requiring some subtypes, the response must have one that matches a
         // requested one.
@@ -427,6 +428,7 @@
         private final boolean alwaysAskForUnicastResponse =
                 MdnsConfigs.alwaysAskForUnicastResponseInEachBurst();
         private final boolean usePassiveMode;
+        private final boolean onlyUseIpv6OnIpv6OnlyNetworks;
         private final long sessionId;
         @VisibleForTesting
         int transactionId;
@@ -439,9 +441,13 @@
         private boolean isFirstBurst;
         @NonNull private final SocketKey socketKey;
 
-        QueryTaskConfig(@NonNull Collection<String> subtypes, boolean usePassiveMode,
-                long sessionId, @NonNull SocketKey socketKey) {
+        QueryTaskConfig(@NonNull Collection<String> subtypes,
+                boolean usePassiveMode,
+                boolean onlyUseIpv6OnIpv6OnlyNetworks,
+                long sessionId,
+                @Nullable SocketKey socketKey) {
             this.usePassiveMode = usePassiveMode;
+            this.onlyUseIpv6OnIpv6OnlyNetworks = onlyUseIpv6OnIpv6OnlyNetworks;
             this.subtypes = new ArrayList<>(subtypes);
             this.queriesPerBurst = QUERIES_PER_BURST;
             this.burstCounter = 0;
@@ -559,6 +565,7 @@
                                 config.expectUnicastResponse,
                                 config.transactionId,
                                 config.socketKey.getNetwork(),
+                                config.onlyUseIpv6OnIpv6OnlyNetworks,
                                 sendDiscoveryQueries,
                                 servicesToResolve,
                                 clock)
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
index 5fd1354..cdd9f76 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocket.java
@@ -93,6 +93,10 @@
         }
         for (NetworkInterfaceWrapper networkInterface : networkInterfaces) {
             multicastSocket.joinGroup(multicastAddress, networkInterface.getNetworkInterface());
+            if (!isOnIPv6OnlyNetwork) {
+                multicastSocket.joinGroup(
+                        MULTICAST_IPV6_ADDRESS, networkInterface.getNetworkInterface());
+            }
         }
     }
 
@@ -105,6 +109,10 @@
         }
         for (NetworkInterfaceWrapper networkInterface : networkInterfaces) {
             multicastSocket.leaveGroup(multicastAddress, networkInterface.getNetworkInterface());
+            if (!isOnIPv6OnlyNetwork) {
+                multicastSocket.leaveGroup(
+                        MULTICAST_IPV6_ADDRESS, networkInterface.getNetworkInterface());
+            }
         }
     }
 
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
index 2b6e5d0..9c9812d 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClient.java
@@ -31,6 +31,9 @@
 
 import java.io.IOException;
 import java.net.DatagramPacket;
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetSocketAddress;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.List;
@@ -194,39 +197,23 @@
         }
     }
 
-    /** Sends a mDNS request packet that asks for multicast response. */
-    public void sendMulticastPacket(@NonNull DatagramPacket packet) {
-        sendMdnsPacket(packet, multicastPacketQueue);
+    @Override
+    public void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
+        sendMdnsPacket(packet, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
     }
 
-    /** Sends a mDNS request packet that asks for unicast response. */
-    public void sendUnicastPacket(DatagramPacket packet) {
+    @Override
+    public void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         if (useSeparateSocketForUnicast) {
-            sendMdnsPacket(packet, unicastPacketQueue);
+            sendMdnsPacket(packet, unicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
         } else {
-            sendMdnsPacket(packet, multicastPacketQueue);
+            sendMdnsPacket(packet, multicastPacketQueue, onlyUseIpv6OnIpv6OnlyNetworks);
         }
     }
 
     @Override
-    public void sendMulticastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
-        if (network != null) {
-            throw new IllegalArgumentException("This socket client does not support sending to "
-                    + "specific networks");
-        }
-        sendMulticastPacket(packet);
-    }
-
-    @Override
-    public void sendUnicastPacket(@NonNull DatagramPacket packet, @Nullable Network network) {
-        if (network != null) {
-            throw new IllegalArgumentException("This socket client does not support sending to "
-                    + "specific networks");
-        }
-        sendUnicastPacket(packet);
-    }
-
-    @Override
     public void notifyNetworkRequested(
             @NonNull MdnsServiceBrowserListener listener,
             @Nullable Network network,
@@ -243,11 +230,25 @@
         return false;
     }
 
-    private void sendMdnsPacket(DatagramPacket packet, Queue<DatagramPacket> packetQueueToUse) {
+    private void sendMdnsPacket(DatagramPacket packet, Queue<DatagramPacket> packetQueueToUse,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks) {
         if (shouldStopSocketLoop && !MdnsConfigs.allowAddMdnsPacketAfterDiscoveryStops()) {
             LOGGER.w("sendMdnsPacket() is called after discovery already stopped");
             return;
         }
+
+        final boolean isIpv4 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
+                instanceof Inet4Address;
+        final boolean isIpv6 = ((InetSocketAddress) packet.getSocketAddress()).getAddress()
+                instanceof Inet6Address;
+        final boolean ipv6Only = multicastSocket != null && multicastSocket.isOnIPv6OnlyNetwork();
+        if (isIpv4 && ipv6Only) {
+            return;
+        }
+        if (isIpv6 && !ipv6Only && onlyUseIpv6OnIpv6OnlyNetworks) {
+            return;
+        }
+
         synchronized (packetQueueToUse) {
             while (packetQueueToUse.size() >= MdnsConfigs.mdnsPacketQueueMaxSize()) {
                 packetQueueToUse.remove();
@@ -535,8 +536,4 @@
         }
         packets.clear();
     }
-
-    public boolean isOnIPv6OnlyNetwork() {
-        return multicastSocket != null && multicastSocket.isOnIPv6OnlyNetwork();
-    }
 }
\ No newline at end of file
diff --git a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
index a35925a..5e4a8b5 100644
--- a/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
+++ b/service-t/src/com/android/server/connectivity/mdns/MdnsSocketClientBase.java
@@ -41,19 +41,15 @@
 
     /**
      * Send a mDNS request packet via given network that asks for multicast response.
-     *
-     * <p>The socket client may use a null network to identify some or all interfaces, in which case
-     * passing null sends the packet to these.
      */
-    void sendMulticastPacket(@NonNull DatagramPacket packet, @Nullable Network network);
+    void sendPacketRequestingMulticastResponse(@NonNull DatagramPacket packet,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks);
 
     /**
      * Send a mDNS request packet via given network that asks for unicast response.
-     *
-     * <p>The socket client may use a null network to identify some or all interfaces, in which case
-     * passing null sends the packet to these.
      */
-    void sendUnicastPacket(@NonNull DatagramPacket packet, @Nullable Network network);
+    void sendPacketRequestingUnicastResponse(@NonNull DatagramPacket packet,
+            boolean onlyUseIpv6OnIpv6OnlyNetworks);
 
     /*** Notify that the given network is requested for mdns discovery / resolution */
     void notifyNetworkRequested(@NonNull MdnsServiceBrowserListener listener,
@@ -88,4 +84,4 @@
         /*** Notify requested socket is destroyed */
         void onAllSocketsDestroyed(@NonNull SocketKey socketKey);
     }
-}
+}
\ No newline at end of file
diff --git a/service/src/com/android/server/connectivity/ClatCoordinator.java b/service/src/com/android/server/connectivity/ClatCoordinator.java
index d87f250..eb3e7ce 100644
--- a/service/src/com/android/server/connectivity/ClatCoordinator.java
+++ b/service/src/com/android/server/connectivity/ClatCoordinator.java
@@ -37,9 +37,10 @@
 import android.system.ErrnoException;
 import android.util.Log;
 
+import androidx.annotation.RequiresApi;
+
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.IndentingPrintWriter;
-import com.android.modules.utils.build.SdkLevel;
 import com.android.net.module.util.BpfMap;
 import com.android.net.module.util.IBpfMap;
 import com.android.net.module.util.InterfaceParams;
@@ -59,8 +60,6 @@
 import java.nio.ByteBuffer;
 import java.util.Objects;
 
-import androidx.annotation.RequiresApi;
-
 /**
  * This coordinator is responsible for providing clat relevant functionality.
  *
diff --git a/service/src/com/android/server/connectivity/KeepaliveTracker.java b/service/src/com/android/server/connectivity/KeepaliveTracker.java
index b4f74d5..fe5d0cf 100644
--- a/service/src/com/android/server/connectivity/KeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveTracker.java
@@ -104,19 +104,21 @@
     // Allowed unprivileged keepalive slots per uid. Caller's permission will be enforced if
     // the number of remaining keepalive slots is less than or equal to the threshold.
     private final int mAllowedUnprivilegedSlotsForUid;
-
+    private final Dependencies mDependencies;
     public KeepaliveTracker(Context context, Handler handler) {
-        this(context, handler, new TcpKeepaliveController(handler));
+        this(context, handler, new TcpKeepaliveController(handler), new Dependencies());
     }
 
     @VisibleForTesting
-    KeepaliveTracker(Context context, Handler handler, TcpKeepaliveController tcpController) {
+    KeepaliveTracker(Context context, Handler handler, TcpKeepaliveController tcpController,
+            Dependencies deps) {
         mTcpController = tcpController;
         mContext = context;
+        mDependencies = deps;
 
-        mSupportedKeepalives = KeepaliveResourceUtil.getSupportedKeepalives(context);
+        mSupportedKeepalives = mDependencies.getSupportedKeepalives(mContext);
 
-        final ConnectivityResources res = new ConnectivityResources(mContext);
+        final ConnectivityResources res = mDependencies.createConnectivityResources(mContext);
         mReservedPrivilegedSlots = res.get().getInteger(
                 R.integer.config_reservedPrivilegedKeepaliveSlots);
         mAllowedUnprivilegedSlotsForUid = res.get().getInteger(
@@ -725,6 +727,7 @@
             srcAddress = InetAddresses.parseNumericAddress(srcAddrString);
             dstAddress = InetAddresses.parseNumericAddress(dstAddrString);
         } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Fail to construct address", e);
             notifyErrorCallback(cb, ERROR_INVALID_IP_ADDRESS);
             return null;
         }
@@ -734,6 +737,7 @@
             packet = NattKeepalivePacketData.nattKeepalivePacket(
                     srcAddress, srcPort, dstAddress, NATT_PORT);
         } catch (InvalidPacketException e) {
+            Log.e(TAG, "Fail to construct keepalive packet", e);
             notifyErrorCallback(cb, e.getError());
             return null;
         }
@@ -866,4 +870,31 @@
         }
         pw.decreaseIndent();
     }
+
+    /**
+     * Dependencies class for testing.
+     */
+    @VisibleForTesting
+    public static class Dependencies {
+        /**
+         * Read supported keepalive count for each transport type from overlay resource. This should
+         * be used to create a local variable store of resource customization, and set as the
+         * input for {@link getSupportedKeepalivesForNetworkCapabilities}.
+         *
+         * @param context The context to read resource from.
+         * @return An array of supported keepalive count for each transport type.
+         */
+        @NonNull
+        public int[] getSupportedKeepalives(@NonNull Context context) {
+            return KeepaliveResourceUtil.getSupportedKeepalives(context);
+        }
+
+        /**
+         * Create a new {@link ConnectivityResources}.
+         */
+        @NonNull
+        public ConnectivityResources createConnectivityResources(@NonNull Context context) {
+            return new ConnectivityResources(context);
+        }
+    }
 }
diff --git a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
index 73a6502..cd3b650 100755
--- a/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
+++ b/tests/cts/hostside/app/src/com/android/cts/net/hostside/VpnTest.java
@@ -1175,8 +1175,8 @@
 
         final String origMode = runWithShellPermissionIdentity(() -> {
             final String mode = DeviceConfig.getProperty(
-                    DeviceConfig.NAMESPACE_CONNECTIVITY, AUTOMATIC_ON_OFF_KEEPALIVE_VERSION);
-            DeviceConfig.setProperty(DeviceConfig.NAMESPACE_CONNECTIVITY,
+                    DeviceConfig.NAMESPACE_TETHERING, AUTOMATIC_ON_OFF_KEEPALIVE_VERSION);
+            DeviceConfig.setProperty(DeviceConfig.NAMESPACE_TETHERING,
                     AUTOMATIC_ON_OFF_KEEPALIVE_VERSION,
                     AUTOMATIC_ON_OFF_KEEPALIVE_ENABLED, false /* makeDefault */);
             return mode;
@@ -1216,7 +1216,7 @@
 
             runWithShellPermissionIdentity(() -> {
                 DeviceConfig.setProperty(
-                                DeviceConfig.NAMESPACE_CONNECTIVITY,
+                                DeviceConfig.NAMESPACE_TETHERING,
                                 AUTOMATIC_ON_OFF_KEEPALIVE_VERSION,
                                 origMode, false);
                 mCM.setTestLowTcpPollingTimerForKeepalive(0);
diff --git a/tests/cts/hostside/src/com/android/cts/net/ProcNetTest.java b/tests/cts/hostside/src/com/android/cts/net/ProcNetTest.java
index 1a528b1..ff06a90 100644
--- a/tests/cts/hostside/src/com/android/cts/net/ProcNetTest.java
+++ b/tests/cts/hostside/src/com/android/cts/net/ProcNetTest.java
@@ -157,13 +157,13 @@
         for (String interfaceDir : mSysctlDirs) {
             String path = IPV6_SYSCTL_DIR + "/" + interfaceDir + "/" + "router_solicitations";
             int value = readIntFromPath(path);
-            assertEquals(IPV6_WIFI_ROUTER_SOLICITATIONS, value);
+            assertEquals(path, IPV6_WIFI_ROUTER_SOLICITATIONS, value);
             path = IPV6_SYSCTL_DIR + "/" + interfaceDir + "/" + "router_solicitation_max_interval";
             int interval = readIntFromPath(path);
             final int lowerBoundSec = 15 * 60;
             final int upperBoundSec = 60 * 60;
-            assertTrue(lowerBoundSec <= interval);
-            assertTrue(interval <= upperBoundSec);
+            assertTrue(path, lowerBoundSec <= interval);
+            assertTrue(path, interval <= upperBoundSec);
         }
     }
 
diff --git a/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
index 8232658..67adcc0 100644
--- a/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
+++ b/tests/unit/java/com/android/server/connectivity/AutomaticOnOffKeepaliveTrackerTest.java
@@ -265,7 +265,7 @@
 
         TestKeepaliveTracker(@NonNull final Context context, @NonNull final Handler handler,
                 @NonNull final TcpKeepaliveController tcpController) {
-            super(context, handler, tcpController);
+            super(context, handler, tcpController, new Dependencies());
         }
 
         public void setReturnedKeepaliveInfo(@NonNull final KeepaliveInfo ki) {
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
index f7ef077..b812fa6 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsMultinetworkSocketClientTest.java
@@ -138,18 +138,38 @@
         verify(mSocketCreationCallback).onSocketCreated(tetherSocketKey2);
 
         // Send packet to IPv4 with target network and verify sending has been called.
-        mSocketClient.sendMulticastPacket(ipv4Packet, mNetwork);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mNetwork,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket).send(ipv4Packet);
         verify(tetherIfaceSock1, never()).send(any());
         verify(tetherIfaceSock2, never()).send(any());
 
+        // Send packet to IPv4 with onlyUseIpv6OnIpv6OnlyNetworks = true, the packet will be sent.
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mNetwork,
+                true /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
+        verify(mSocket, times(2)).send(ipv4Packet);
+        verify(tetherIfaceSock1, never()).send(any());
+        verify(tetherIfaceSock2, never()).send(any());
+
         // Send packet to IPv6 without target network and verify sending has been called.
-        mSocketClient.sendMulticastPacket(ipv6Packet, null);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv6Packet, null,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, never()).send(ipv6Packet);
         verify(tetherIfaceSock1).send(ipv6Packet);
         verify(tetherIfaceSock2).send(ipv6Packet);
+
+        // Send packet to IPv6 with onlyUseIpv6OnIpv6OnlyNetworks = true, the packet will not be
+        // sent. Therefore, the tetherIfaceSock1.send() and tetherIfaceSock2.send() are still be
+        // called once.
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv6Packet, null,
+                true /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
+        verify(mSocket, never()).send(ipv6Packet);
+        verify(tetherIfaceSock1, times(1)).send(ipv6Packet);
+        verify(tetherIfaceSock2, times(1)).send(ipv6Packet);
     }
 
     @Test
@@ -230,7 +250,8 @@
         verify(mSocketCreationCallback).onSocketCreated(socketKey3);
 
         // Send IPv4 packet on the non-null Network and verify sending has been called.
-        mSocketClient.sendMulticastPacket(ipv4Packet, mNetwork);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, mNetwork,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket).send(ipv4Packet);
         verify(socket2, never()).send(any());
@@ -258,7 +279,8 @@
         verify(socketCreationCb2).onSocketCreated(socketKey3);
 
         // Send IPv4 packet to null network and verify sending to the 2 tethered interface sockets.
-        mSocketClient.sendMulticastPacket(ipv4Packet, null);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, null,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         // ipv4Packet still sent only once on mSocket: times(1) matches the packet sent earlier on
         // mNetwork
@@ -271,7 +293,8 @@
         verify(mProvider, timeout(DEFAULT_TIMEOUT)).unrequestSocket(callback2);
 
         // Send IPv4 packet again and verify it's still sent a second time
-        mSocketClient.sendMulticastPacket(ipv4Packet, null);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, null,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(socket2, times(2)).send(ipv4Packet);
         verify(socket3, times(2)).send(ipv4Packet);
@@ -281,7 +304,8 @@
         verify(mProvider, timeout(DEFAULT_TIMEOUT)).unrequestSocket(callback);
 
         // Send IPv4 packet and verify no more sending.
-        mSocketClient.sendMulticastPacket(ipv4Packet, null);
+        mSocketClient.sendPacketRequestingMulticastResponse(ipv4Packet, null,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         HandlerUtils.waitForIdle(mHandler, DEFAULT_TIMEOUT);
         verify(mSocket, times(1)).send(ipv4Packet);
         verify(socket2, times(2)).send(ipv4Packet);
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
index 635a1d4..9892e9f 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsServiceTypeClientTests.java
@@ -327,7 +327,8 @@
         MdnsSearchOptions searchOptions =
                 MdnsSearchOptions.newBuilder().addSubtype("12345").setIsPassiveMode(false).build();
         QueryTaskConfig config = new QueryTaskConfig(
-                searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1, socketKey);
+                searchOptions.getSubtypes(), searchOptions.isPassiveMode(),
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */, 1, socketKey);
 
         // This is the first query. We will ask for unicast response.
         assertTrue(config.expectUnicastResponse);
@@ -356,7 +357,8 @@
         MdnsSearchOptions searchOptions =
                 MdnsSearchOptions.newBuilder().addSubtype("12345").setIsPassiveMode(false).build();
         QueryTaskConfig config = new QueryTaskConfig(
-                searchOptions.getSubtypes(), searchOptions.isPassiveMode(), 1, socketKey);
+                searchOptions.getSubtypes(), searchOptions.isPassiveMode(),
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */, 1, socketKey);
 
         // This is the first query. We will ask for unicast response.
         assertTrue(config.expectUnicastResponse);
@@ -928,16 +930,16 @@
                 ArgumentCaptor.forClass(DatagramPacket.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         // Send twice for IPv4 and IPv6
-        inOrder.verify(mockSocketClient, times(2)).sendUnicastPacket(srvTxtQueryCaptor.capture(),
-                eq(mockNetwork));
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
+                srvTxtQueryCaptor.capture(),
+                eq(mockNetwork), eq(false));
 
         final MdnsPacket srvTxtQueryPacket = MdnsPacket.parse(
                 new MdnsPacketReader(srvTxtQueryCaptor.getValue()));
 
         final String[] serviceName = getTestServiceName(instanceName);
         assertFalse(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_PTR));
-        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_SRV, serviceName));
-        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_TXT, serviceName));
+        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_ANY, serviceName));
 
         // Process a response with SRV+TXT
         final MdnsPacket srvTxtResponse = new MdnsPacket(
@@ -959,8 +961,9 @@
         final ArgumentCaptor<DatagramPacket> addressQueryCaptor =
                 ArgumentCaptor.forClass(DatagramPacket.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
-        inOrder.verify(mockSocketClient, times(2)).sendMulticastPacket(addressQueryCaptor.capture(),
-                eq(mockNetwork));
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
+                addressQueryCaptor.capture(),
+                eq(mockNetwork), eq(false));
 
         final MdnsPacket addressQueryPacket = MdnsPacket.parse(
                 new MdnsPacketReader(addressQueryCaptor.getValue()));
@@ -1018,15 +1021,15 @@
                 ArgumentCaptor.forClass(DatagramPacket.class);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         // Send twice for IPv4 and IPv6
-        inOrder.verify(mockSocketClient, times(2)).sendUnicastPacket(srvTxtQueryCaptor.capture(),
-                eq(mockNetwork));
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingUnicastResponse(
+                srvTxtQueryCaptor.capture(),
+                eq(mockNetwork), eq(false));
 
         final MdnsPacket srvTxtQueryPacket = MdnsPacket.parse(
                 new MdnsPacketReader(srvTxtQueryCaptor.getValue()));
 
         final String[] serviceName = getTestServiceName(instanceName);
-        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_SRV, serviceName));
-        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_TXT, serviceName));
+        assertTrue(hasQuestion(srvTxtQueryPacket, MdnsRecord.TYPE_ANY, serviceName));
 
         // Process a response with all records
         final MdnsPacket srvTxtResponse = new MdnsPacket(
@@ -1064,13 +1067,13 @@
         final ArgumentCaptor<DatagramPacket> renewalQueryCaptor =
                 ArgumentCaptor.forClass(DatagramPacket.class);
         // Second and later sends are sent as "expect multicast response" queries
-        inOrder.verify(mockSocketClient, times(2)).sendMulticastPacket(renewalQueryCaptor.capture(),
-                eq(mockNetwork));
+        inOrder.verify(mockSocketClient, times(2)).sendPacketRequestingMulticastResponse(
+                renewalQueryCaptor.capture(),
+                eq(mockNetwork), eq(false));
         inOrder.verify(mockListenerOne).onDiscoveryQuerySent(any(), anyInt());
         final MdnsPacket renewalPacket = MdnsPacket.parse(
                 new MdnsPacketReader(renewalQueryCaptor.getValue()));
-        assertTrue(hasQuestion(renewalPacket, MdnsRecord.TYPE_SRV, serviceName));
-        assertTrue(hasQuestion(renewalPacket, MdnsRecord.TYPE_TXT, serviceName));
+        assertTrue(hasQuestion(renewalPacket, MdnsRecord.TYPE_ANY, serviceName));
         inOrder.verifyNoMoreInteractions();
 
         long updatedReceiptTime =  TEST_ELAPSED_REALTIME + TEST_TTL;
@@ -1328,18 +1331,18 @@
         assertEquals(currentThreadExecutor.getAndClearLastScheduledDelayInMs(), timeInMs);
         currentThreadExecutor.getAndClearLastScheduledRunnable().run();
         if (expectsUnicastResponse) {
-            verify(mockSocketClient).sendUnicastPacket(
-                    expectedIPv4Packets[index], mockNetwork);
+            verify(mockSocketClient).sendPacketRequestingUnicastResponse(
+                    expectedIPv4Packets[index], mockNetwork, false);
             if (multipleSocketDiscovery) {
-                verify(mockSocketClient).sendUnicastPacket(
-                        expectedIPv6Packets[index], mockNetwork);
+                verify(mockSocketClient).sendPacketRequestingUnicastResponse(
+                        expectedIPv6Packets[index], mockNetwork, false);
             }
         } else {
-            verify(mockSocketClient).sendMulticastPacket(
-                    expectedIPv4Packets[index], mockNetwork);
+            verify(mockSocketClient).sendPacketRequestingMulticastResponse(
+                    expectedIPv4Packets[index], mockNetwork, false);
             if (multipleSocketDiscovery) {
-                verify(mockSocketClient).sendMulticastPacket(
-                        expectedIPv6Packets[index], mockNetwork);
+                verify(mockSocketClient).sendPacketRequestingMulticastResponse(
+                        expectedIPv6Packets[index], mockNetwork, false);
             }
         }
     }
diff --git a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
index e30c249..69efc61 100644
--- a/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
+++ b/tests/unit/java/com/android/server/connectivity/mdns/MdnsSocketClientTests.java
@@ -54,6 +54,7 @@
 
 import java.io.IOException;
 import java.net.DatagramPacket;
+import java.net.InetSocketAddress;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -221,15 +222,17 @@
         assertTrue(unicastReceiverThread.isAlive());
 
         // Sends a packet.
-        DatagramPacket packet = new DatagramPacket(buf, 0, 5);
-        mdnsClient.sendMulticastPacket(packet);
+        DatagramPacket packet = getTestDatagramPacket();
+        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         // mockMulticastSocket.send() will be called on another thread. If we verify it immediately,
         // it may not be called yet. So timeout is added.
         verify(mockMulticastSocket, timeout(TIMEOUT).times(1)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
 
         // Verify the packet is sent by the unicast socket.
-        mdnsClient.sendUnicastPacket(packet);
+        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         verify(mockMulticastSocket, timeout(TIMEOUT).times(1)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(1)).send(packet);
 
@@ -272,15 +275,17 @@
         assertNull(unicastReceiverThread);
 
         // Sends a packet.
-        DatagramPacket packet = new DatagramPacket(buf, 0, 5);
-        mdnsClient.sendMulticastPacket(packet);
+        DatagramPacket packet = getTestDatagramPacket();
+        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         // mockMulticastSocket.send() will be called on another thread. If we verify it immediately,
         // it may not be called yet. So timeout is added.
         verify(mockMulticastSocket, timeout(TIMEOUT).times(1)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
 
         // Verify the packet is sent by the multicast socket as well.
-        mdnsClient.sendUnicastPacket(packet);
+        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         verify(mockMulticastSocket, timeout(TIMEOUT).times(2)).send(packet);
         verify(mockUnicastSocket, timeout(TIMEOUT).times(0)).send(packet);
 
@@ -332,7 +337,8 @@
     public void testStopDiscovery_queueIsCleared() throws IOException {
         mdnsClient.startDiscovery();
         mdnsClient.stopDiscovery();
-        mdnsClient.sendMulticastPacket(new DatagramPacket(buf, 0, 5));
+        mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         synchronized (mdnsClient.multicastPacketQueue) {
             assertTrue(mdnsClient.multicastPacketQueue.isEmpty());
@@ -343,7 +349,8 @@
     public void testSendPacket_afterDiscoveryStops() throws IOException {
         mdnsClient.startDiscovery();
         mdnsClient.stopDiscovery();
-        mdnsClient.sendMulticastPacket(new DatagramPacket(buf, 0, 5));
+        mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         synchronized (mdnsClient.multicastPacketQueue) {
             assertTrue(mdnsClient.multicastPacketQueue.isEmpty());
@@ -356,7 +363,8 @@
         //MdnsConfigsFlagsImpl.mdnsPacketQueueMaxSize.override(2L);
         mdnsClient.startDiscovery();
         for (int i = 0; i < 100; i++) {
-            mdnsClient.sendMulticastPacket(new DatagramPacket(buf, 0, 5));
+            mdnsClient.sendPacketRequestingMulticastResponse(getTestDatagramPacket(),
+                    false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         }
 
         synchronized (mdnsClient.multicastPacketQueue) {
@@ -452,9 +460,11 @@
         enableUnicastResponse.set(true);
 
         mdnsClient.startDiscovery();
-        DatagramPacket packet = new DatagramPacket(buf, 0, 5);
-        mdnsClient.sendUnicastPacket(packet);
-        mdnsClient.sendMulticastPacket(packet);
+        DatagramPacket packet = getTestDatagramPacket();
+        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
 
         // Wait for the timer to be triggered.
         Thread.sleep(MdnsConfigs.checkMulticastResponseIntervalMs() * 2);
@@ -484,8 +494,10 @@
         assertFalse(mdnsClient.receivedUnicastResponse);
         assertFalse(mdnsClient.cannotReceiveMulticastResponse.get());
 
-        mdnsClient.sendUnicastPacket(packet);
-        mdnsClient.sendMulticastPacket(packet);
+        mdnsClient.sendPacketRequestingUnicastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
+        mdnsClient.sendPacketRequestingMulticastResponse(packet,
+                false /* onlyUseIpv6OnIpv6OnlyNetworks */);
         Thread.sleep(MdnsConfigs.checkMulticastResponseIntervalMs() * 2);
 
         // Verify cannotReceiveMulticastResponse is not set the true because we didn't receive the
@@ -540,4 +552,9 @@
         verify(mockCallback, timeout(TIMEOUT).atLeast(1))
                 .onResponseReceived(any(), argThat(key -> key.getInterfaceIndex() == -1));
     }
+
+    private DatagramPacket getTestDatagramPacket() {
+        return new DatagramPacket(buf, 0, 5,
+                new InetSocketAddress(MdnsConstants.getMdnsIPv4Address(), 5353 /* port */));
+    }
 }
\ No newline at end of file