IPv6

http://electronicdesign.com/embedded/whats-difference-between-ipv4-and-ipv6

http://blogs.cisco.com/security/ipv6-whats-new/

http://www.sixscape.com/joomla/sixscape/index.php/ipv6-training-certification/ipv6-forum-official-certification/ipv6-forum-network-engineer-silver/network-engineer-silver-introduction/differences-between-ipv4-and-ipv6