[Pdns-users] cisco css and Received an answer (non-query) packet

bert hubert ahu at ds9a.nl
Wed Mar 31 05:29:34 UTC 2004

On Tue, Mar 30, 2004 at 10:52:21PM -0500, Mohamed Lrhazi wrote:

> I configured 2 machines running pdns, they are using private ip addresses. 
> On the css I configured a dozen content rules, that all say the same 
> thing... load balance dns traffic for the dozen public ips across the two 
> dns servers...
> very frequently, pdns logs the error: Received an answer (non-query) packet 
> from one of my public ips

I'd suggest running:
tcpdump -s 0 -f packets port 53 and udp
On the machine giving that error and checking what kind of packet is causing
this. To be honest, it sounds like a bug in your load balancer!

Good luck.

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