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
(cherry picked from commit 39cd9890b7336fcd8516764ff6fafe73505801a7)
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)." into R1.30