Master/slave configuration

Barry Margolin barmar at
Wed Mar 7 17:15:53 UTC 2012

In article <mailman.166.1331112226.63724.bind-users at>,
 romgo at wrote:

> Dear community,
> I use bind on my network as DNS Server. Running bind 
> 1:9.6.ESV.R4+dfsg-0+lenny4
> on Debian Lenny.
> The setup is quite usual : one master server with one slave server.
> The slave sync the zone from the master.
> I discover that when the master is down I have some trouble to access to
> internet and to local domain which are managed by the master server.
> Symptoms are : slow browsing and some website can't be reached, seems to be a
> timeout issue. (the server didn't answer in time).
> I saw that for unreachable website, the issue was DNS as my tcpdump didn't 
> get
> any http request.
> How can I troubleshoot this issue ?
> Regards,

Is your /etc/resolv.conf pointing to both servers?

Things will be slow, since the resolver has to wait for a timeout before 
failing over to the backup server.

Barry Margolin
Arlington, MA

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