Numbering nameservers and resolvers

Mikael Abrahamsson swmike at
Tue Aug 17 19:34:58 UTC 2010

On Tue, 17 Aug 2010, Nick Olsen wrote:

> So lets say that you have multiple DNS resolvers in the same ip space that
> you advertise from multiple locations. All would be fine for the most part.
> But if you had a location equidistant network wise from two POP's wouldn't
> it load balance and possibly break some TCP sessions? How would someone get
> around this? This is also what OpenDNS does from what I understand.

Usually network do not loadshare per-packet on BGP, so a TCP session will 
"always" go to the same dns server, at least for the short duration this 
TCP session lives.

Mikael Abrahamsson    email: swmike at

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