nanog mailing list archives

Re: IPv6 resolvers


From: Chris Adams <cmadams () hiwaay net>
Date: Wed, 4 Jan 2012 17:48:40 -0600

Once upon a time, Ryan Rawdon <ryan () u13 net> said:
Try <random string>.pfsense.org (see below) to avoid caching, since the problem in question does not rely on the name 
existing.  I am able to reproduce it roughly every 3rd random string I try, definitely not every time.  I am unable 
to reproduce it with other domains so far, only pfsense.org and when it does occur I see a 1500-2200ms query time:

This appears to be a problem with the authoritative servers for
pfsense.org.  They are dns[1-5].registrar-servers.com (which each have
multiple IP addresses).  If I try each IP, I get no response from
38.101.213.194 and 2+ second response time from 69.16.244.25.  Both of
those IPs are listed for dns1.registrar-servers.com.

-- 
Chris Adams <cmadams () hiwaay net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.


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