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So... is it time to do IPv6 day monthy yet?
>>
>
> Not really. A AAAA record adds 28 octets (a A record takes 16). Unless
> you have a lot of name servers most referrals still fall within 512 octets
> additionally most answers also still fall withing 512 octets.
>
1. Most != All even in IPv4 (ran into this in a few hotels with some
prominent MMORPG login sites)
2. 512/16 = 32, 512 / 28 = 18 (the 19th record will TRUNC).
So, you get just over half the number of records to fit within
the same space.
I would say that my statement that you are much more likely to
encounter TRUNC results and need a TCP query with IPv6 stands.
It also matches my experience.
Owen