Basic IPv6 Router Advertisement daemon

Bug: 9580643
Change-Id: Iebd4d1f694699ffd4daf7d71e9b9d8f49e9b632f
diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index 141af3d..35e3065 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -45,13 +45,20 @@
     public native static void attachDhcpFilter(FileDescriptor fd) throws SocketException;
 
     /**
-     * Attaches a socket filter that accepts ICMP6 router advertisement packets to the given socket.
+     * Attaches a socket filter that accepts ICMPv6 router advertisements to the given socket.
      * @param fd the socket's {@link FileDescriptor}.
      * @param packetType the hardware address type, one of ARPHRD_*.
      */
     public native static void attachRaFilter(FileDescriptor fd, int packetType) throws SocketException;
 
     /**
+     * Configures a socket for receiving ICMPv6 router solicitations and sending advertisements.
+     * @param fd the socket's {@link FileDescriptor}.
+     * @param ifIndex the interface index.
+     */
+    public native static void setupRaSocket(FileDescriptor fd, int ifIndex) throws SocketException;
+
+    /**
      * Binds the current process to the network designated by {@code netId}.  All sockets created
      * in the future (and not explicitly bound via a bound {@link SocketFactory} (see
      * {@link Network#getSocketFactory}) will be bound to this network.  Note that if this