The french ISP free which I'm a custommer now gives ipv6 connectivity (through a curious 6to4 clone though). The nice news is that we now have really near 6to4 nodes in France all over the country. It even has quite a nice ping.

All the stuff is done through the modem, and gives autoconfiguration to the network. I just had to "modprobe ipv6" on my boxen and voilà !

I've not looked at reverse DNS yet, as it's not regular 6to4 (it has a 2a01 prefix) http://6to4.nro.net/ cannot do a thing about it yet. We'll see how it goes :)