Mv> I see you use a he.net tunnel. Mv> I see your IPv4 address is from DTAG. DTAG provides native IPv6 to Mv> (some?) of its customers. There are two German Fidonet sysops that have Mv> native IPv6 from DTAG. Mv> You do not have native IPv6 from DTAG or is there another reason you use Mv> a he.net tunnel?
Yep, this is my configuration :)
I chose this, as my DTAG DSL connection would indeed offer a Dual-Stack IP connection, but the IPv6 prefix is not fixed and could change at any time - kind of like the IPv4 address. And thus I would need dynamic DNS not only for IPv4 but also for IPv6... So I chose to stay with my he.net tunnel -- which also allows me to specify reverse DNS servers. I don't know if that is even remotely possible for a private DTAG DSL connection...