So... is it time to do IPv6 day monthy yet?

Owen DeLong owen at
Sat Jun 18 18:19:41 UTC 2011

> 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.


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