And, as promised, the followup to part 1! Another IPv6 Crash Course For Linux: Real IPv6 Addresses, Routing, Name Services shows how to use real routable IPv6 addresses, setting up a router, and some tips on DNS for IPv6.
You may also enjoy Steven Vaughan-Nichols’ Who has, and who doesn’t have, IPv6 Support, which is all about the *fun of shopping for IPv6-enabled networking gear. Is it really such a hard question, “Does it support it: Y/N?”
*Not really fun at all.