References
RFC 1256 - "ICMP Router Discovery Messages"
RFC 2461 - "Neighbor Discovery for IP Version 6 (IPv6)"
RFC 2464 - "Transmission of IPv6 Packets over Ethernet Networks"
Internet draft - "Mobility Support in IPv6"
Internet draft - "Site Prefixes in Neighbor Discovery"
Internet draft - "Default Router Preferences and More-Specific Routes"
