Yes I have play with setting up IPv6 in the labs, to the point where I can start surfing ipv6.google.com, and of course we tried out stuff like ping6 and traceroute6.

The labs however, all have "public" IPv6 address, there was no NAT, all the packets are just route straight to the net and straignt back via routers/gateways.

I guess I am wondering how should a private network for IPv6 to set up... you know on IPv4 there are special address space reserved for private use, 10.0.0.0/8 for e.g... I am not aware of such thing for IPv6, so does that mean you just use random IPv6 address for IPv6? By random I mean, set up your own rule, map to existing IPv4 ip range or something, just not some specific thing like 10.0.0.0/8.