I recently setup a VPS with Arp Networks. By default they set you up with your own IPv6 block. All you need to do is configure it to meet your needs. I reinstalled the VPS with Ubuntu Lucid (which is not one of their default OSes) so I needed to reconfigure my interface to use one of my assigned v6 addresses. The process is extremely easy. Here is the relevant section of my
iface eth0 inet6 static address 2607:f2f8:a230::2 gateway 2607:f2f8:a230::1 netmask 64
After restarting networking, I was able to reach the machine via IPv6. You can verify the results of this by testing soljerome.com at http://ipv6-test.com/validate.php. Now that I’m IPv6 ready, I just wish that Comcast would finish their dual-stack rollout so I can use it natively from home. Seeing as how the IANA just allocated the final five /8 blocks of IPv4 address space, I’m hoping that the rollout happens sooner rather than later.