I’ve managed to implement IPv6 on my rackspace cloud server and enabled ipv6 on web directory www.boioiong.com.
Until now everything looks OK.
I’m using a tunnel and a subnet from Sixxs.net.

Later I’ll publish a tutorial on how to setup your Linux Ubuntu box (radvd, aiccu, bind, etc).

Not much for now but i’m pretty excited about IPv6 experience!
Also I’m still testing so errors may arise on the way.