Well, my ISP and router don't support IPv6 but I discovered Miredo (Teredo)
a while ago. It doesn't seem to work if both ends are using Teredo behind
IPv4 NAT, but other than that it does allow you to connect to the IPv6
internet.
In Ubuntu (and presumably Debian?) IPv6 support is as easy as 'apt-get
install miredo'. It seems to be made of magic as it sets its self up
automatically in seconds. I've done this on all of my Linux machines now.
With Miredo I got 10/10 and 9/10 because my ISP's DNS server doesn't support
IPv6.
Haven't looked into Miredo on my Arch Linux, but I did come across
this article on the Arch Wiki that some may also find useful.
https://wiki.archlinux.org/index.php/IPv6_-_6in4_Tunnel
I haven't had the chance to try it myself yet, but will do just as
soon as my kernel finishes compiling.
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