nxdomain not caching for configured reverse lookup

[sumsum 2000]

The use of 7.7.7.7 and 9.9.9.9 was used  for testing purpose. This test is
to cover the scenario, if I have a  reverse lookup which is not configured
on 10.212.24.11, i was expecting it to return  NXDOMAIN and have it cached.
This is not the ideal scenario of usage, but to check the condition, if it
is not configured correctly.


On Tue, Aug 20, 2013 at 6:07 PM, Matus UHLAR - fantomas
<uhlar at fantomas.sk>wrote:

> On 20.08.13 15:42, sumsum 2000 wrote:
>>>
>>>>                        zone "7.7.7.7.in-addr.arpa" IN {
>>>>                                type forward;
>>>>                                forwarders {10.212.24.11;};
>>>>                                forward only;
>>>>                        };
>>>>
>>>
> On 20.08.13 21:19, Mark Andrews wrote:
>
>> The forward zone is not for a zone cut in the DNS tree.  As a result
>> the SOA record is above the "zone" and the SOA record gets ignored.
>> In practice almost all forwarded zones match a actual zone so the
>> returned SOA record is accepted.
>>
>
> which means you need to forward 7.7.7.in-addr.arpa, 7.7.in-addr.arpa or
> 7.in-addr.arpa, depending on what is configured on 10.212.24.11.
>
> BTW, are you aware that 7.7.7.7 is used by DoD and 9.9.9.9 by IBM?
>
>
> --
> Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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