IPv6 support

[tambry]

The official website lacks IPv6 support. Considering that it seems to be hosted on DO, which has IPv6 support, it shouldn't be too hard to fix.

[dessalines]

I'm not sure exactly how to do this, I'd need some help getting this to work.

[tambry]

First step would be to enable IPv6 support for the droplet. Enabling IPv6 on existing droplets entails adding the appropriate interfaces, which is accurately described in that tutorial.

Check if the configurations works by for example running "ping6 google.com". Restarting the networking service (or alternatively the server) may be necessary to obtain an IPv6 address.

Now run ip -6 addr and you should be able to see the 3 IPv6 addresses:

• loopback (always ::1)
• local-link (prefixed with FE80, non-routable, useless for our purposes)
• a publicly accessible IPv6 address (the one we're interested in)

Finally, add the publicly accessible IPv6 address to the DNS for the domain as an AAAA record.

The server configuration will likely also need some changes, but it's probably worth doing the above beforehand, as DNS propagation might take a while and such.