Hi,

as you know im trying to get ipv6 connectivity for our backbone and hosting stuff.

Know i got the following question: is it wise to add a v6 host record for all domains pointing to the webhostings?

www.blah.li. IN A 88.82.97.x www.blah.li. IN AAAA 2a02:380:xxxx::x

its not a problem to do dual stack ipv6 with my linux webhosting system, but all ipv4 users have to wait for the ipv6 timeout when trying to reach an ipv6 enabled website, right?

Only if the client stack assumes it has IPv6 connectivity but this connectivity is broken. This should not be the case for 99% of the cases. Those clients will try IPv4 first.

Make sure you have decent connectivity to IPv6 though, otherwise you will experience problems with IPv6-enabled clients.

And maybe have a look at http://www.braintrust.co.nz/ipv6wwwtest/

is there a way to control this timeout?

No, it's a client stack thing.

Bernhard