16 Oct
2012
16 Oct
'12
11:42 p.m.
On Wed, 17 Oct 2012, Joseph Anthony Pasquale Holsten wrote:
But today I noticed that we have a lot of traffic to our DNS cache, and started to investigate. Turns out that every DNS request would start with one for the AAAA record. Ah, no luck. Maybe you forgot the search domain? Let's retry that DNS request with that tacked on. Failed again? Meanwhile, lets simultaneously try for the AA record then. Repeat.
You're describing normal behaviour. Why do you feel the behaviour you're seeing is a problem? Because you're not running IPv6, you're seeing twice the DNS traffic in some cases. Doing multiple lookups for everything in search domain is done for IPv4 as well. -- Mikael Abrahamsson email: swmike@swm.pp.se