IPv6 explained

Nicely explained IPv6 routing and subnetting. Note that this is from a free IT training site for Microsoft exams 70-640 and others

http://www.youtube.com/watch?v=LcPEOxILIcs&feature=share&list=PL1l78n6W8zyoC2_VVQSLeZT6rkRkUlOY_