diff --git a/service/src/com/android/server/connectivity/Nat464Xlat.java b/service/src/com/android/server/connectivity/Nat464Xlat.java
index a2df7ab..4f1f871 100644
--- a/service/src/com/android/server/connectivity/Nat464Xlat.java
+++ b/service/src/com/android/server/connectivity/Nat464Xlat.java
@@ -44,7 +44,9 @@
 import com.android.server.ConnectivityService;
 
 import java.io.IOException;
+import java.net.Inet4Address;
 import java.net.Inet6Address;
+import java.net.UnknownHostException;
 import java.util.Objects;
 
 /**
@@ -541,6 +543,34 @@
     }
 
     /**
+     * Translate the input v4 address to v6 clat address.
+     */
+    @Nullable
+    public Inet6Address translateV4toV6(@NonNull Inet4Address addr) {
+        // Variables in Nat464Xlat should only be accessed from handler thread.
+        ensureRunningOnHandlerThread();
+        if (!isStarted()) return null;
+
+        return convertv4ToClatv6(mNat64PrefixInUse, addr);
+    }
+
+    @Nullable
+    private static Inet6Address convertv4ToClatv6(
+            @NonNull IpPrefix prefix, @NonNull Inet4Address addr) {
+        final byte[] v6Addr = new byte[16];
+        // Generate a v6 address from Nat64 prefix. Prefix should be 12 bytes long.
+        System.arraycopy(prefix.getAddress().getAddress(), 0, v6Addr, 0, 12);
+        System.arraycopy(addr.getAddress(), 0, v6Addr, 12, 4);
+
+        try {
+            return (Inet6Address) Inet6Address.getByAddress(v6Addr);
+        } catch (UnknownHostException e) {
+            Log.e(TAG, "getByAddress should never throw for a numeric address");
+            return null;
+        }
+    }
+
+    /**
      * Get the generated v6 address of clat.
      */
     @Nullable
diff --git a/service/src/com/android/server/connectivity/NetworkAgentInfo.java b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
index 56ee117..08c1455 100644
--- a/service/src/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
@@ -68,6 +68,7 @@
 import com.android.server.ConnectivityService;
 
 import java.io.PrintWriter;
+import java.net.Inet4Address;
 import java.net.Inet6Address;
 import java.time.Instant;
 import java.util.ArrayList;
@@ -1042,6 +1043,14 @@
     }
 
     /**
+     * Translate the input v4 address to v6 clat address.
+     */
+    @Nullable
+    public Inet6Address translateV4toClatV6(@NonNull Inet4Address addr) {
+        return clatd.translateV4toV6(addr);
+    }
+
+    /**
      * Get the NetworkMonitorManager in this NetworkAgentInfo.
      *
      * <p>This will be null before {@link #onNetworkMonitorCreated(INetworkMonitor)} is called.