In message <[email protected]>, Jeroen van Aart writes: > What would be the best way to configure your dns once you've set up IPv6 > 6to4? Separate the IPv4 and IPV6 domains or let them be the same? > > That is, use something like example.com for your existing IPv4 address > and something like 6.example.com for IPv6 (and www.6.example.com etc.)? > > Or is it safe to have both A and AAAA records for the same domain name? > > Thanks, > Jeroen > > -- > http://goldmark.org/jeff/stupid-disclaimers/ > http://linuxmafia.com/~rick/faq/plural-of-virus.html
Firstly I would use a tunnel broker instead of 6to4. Easier to debug failures. To answer your question you need to do a risk analysis. Adding a IPv6 address next to a IPv4 address can make connections to the site appear to be slow when the client side tries IPv6 but doesn't have a working IPv6 path (this is a very small percentage). There are some applications that will not fallback to IPv4 if the IPv6 connection fails (this is also a small percentage again). ISC publishes both AAAA and A record at the same name. This is somewhat of a forcing function for broken sites to address their IPv6 issues. We have been publishing both address for many years now. Google on the other had decided to white-list sites that it knows have IPv6 connectivity and a responsive noc. 6to4 sites don't meet these requirments. Tunneled sites can. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: [email protected]
