Getting different name resolution for news.google.com from masterand slave BIND
JLightner at water.com
Wed May 25 14:30:21 UTC 2011
Yes. I verified this with our chief network engineer this morning.
Yesterday on doing dig @ns1.google.com (or @ns2 or @ns3 or @ns4) my
results for the master were always the same IPs indicated in my initial
post for the master whereas those from my slave were always the ones
indicated in that same post for the slave. I should have mentioned
As noted in a reply to another email this morning it appears both
servers now get the same list of IPs (which is the list that only the
slave was getting yesterday). Since we made no change I suspect this
had more to do with how Google's NS servers were handling things than
how we were querying.
From: bind-users-bounces+jlightner=water.com at lists.isc.org
[mailto:bind-users-bounces+jlightner=water.com at lists.isc.org] On Behalf
Of Eivind Olsen
Sent: Tuesday, May 24, 2011 7:26 PM
To: bind-users at lists.isc.org
Subject: RE: Getting different name resolution for news.google.com from
masterand slave BIND
Lightner, Jeff wrote:
> The master is dswadns1.water.com at 22.214.171.124 and the slave is
> dswadns2.water.com at 126.96.36.199.
So, they leave your network in the same way, through the same router
Are they configured to use any forwarders? Stub-zones? Etc? Or do they
both talk directly out to the Internet?
Or, how about.. what do you get if you query the same Google nameserver
from both your hosts? Do you get the same results if you for example
ns1.google.com from with dig on both your nameservers, or do you then
get different answers? How about if you check from a single of your
nameservers, doing manual queries to all 4 Google nameservers (ns1 - 4)?
Same result from all 4, or different results?
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