Send the IPv6 RA message to all nodes on local link (ff02::1).
Also, receive the RS message on all routers on local link (ff02::2).

Change-Id: I45d79f2073e6b7357f01601b194396c7b97b8880
Merge "Send the IPv6 RA message to all nodes on local link (ff02::1). Also, receive the RS message on all routers on local link (ff02::2)."