bind 9.2 9.3 different behavior reverse DNS subnets

Stephen John Smoogen smooge at
Wed Feb 28 20:07:58 UTC 2007

On 2/28/07, Florin Andrei <florin at> wrote:
> I've two DNS servers, 9.2.4 and 9.3.1, each one keeping a reverse DNS
> subnet (/27 and /26 respectively). The configs are identical, just
> different subnets and addresses.
> 9.3.1 works fine.
> 9.2.4 does not work. I do a "dig @localhost PTR" and
> there's no ANSWER section.
> I'm stumped. Any suggestion?

well more info would need to be done to be of any help.

what is the config file
what does debugging/messages say
what does dig +trace say
does the upstream owner of the /24 use the approriate RFC (whatever)
to route calls to your /27 etc?

> --
> Florin Andrei

Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"

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