I just set up IPv6 for haller.ws using SIT with Hurricane Electric as I tired of waiting for tektonic.net to update their provisioning/billing systems to IPv6.

Hurricane Electric IPv6 makes tunnel registration pretty easy; they even provide the setup scripts for you. Next is making sure that mail and web work happily. Which they did:

> netstat -ln --inet6
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State 
tcp6       0      0 :::25                   :::*                    LISTEN
tcp6       0      0 :::80                   :::*                    LISTEN

When my DNS updates propagate to my primaries, I'll run through the Hurricane Electric tests to make sure it's all working. For now, it looks good:

18:05:26 ~> dig +short aaaa haller.ws @haller.ws
2001:470:1f04:1b21::2