We've known for a number of years that IPv6 was coming.  In fact, in some parts of the world, it really is here, but US Government mandates not withstanding, not so much here in the US.  I've played with IPv6 on my home network and I use Teredo to connect out using IPv6, but the real question in the back of my mind is, are the tools that we've grown accustomed to for network/packet analysis in IPv4, ready and up to the task of an IPv6 world.  My question for our readers this afternoon is are the tools you use ready for an IPv6 internet?  Use the contact page to let us know either way.  I'll post a follow-up next weekend and summarize your responses.  In the meantime, CERT has published a nice little post on filtering ICMPv6 using host-based firewalls.