We use VOIP (Voice over IP telephony) exclusively. A while back, I disabled the built-in voip in my router, and opted for a more custom (and robust) Asterisk voip server.

My ipv6 curiosity was aroused (again) when i read about a local ISP enabling native IPV6 support. My ISP doesn't have that feature yet (nor do most routers in non bridged mode too, for that matter) and i thought i would revisit the ipv6 tunnel scene again.

So i set up the tunnel, did up some custom server init scripts, set up the ip6tables firewall, and reverse ip stuff.

I also added an irc bouncer to the mixture -- just waiting for my vanity domain to resolve and all should be sweet! :-)