how to setup revdns for /16 subnet

[Matus UHLAR - fantomas]

On 28.07.08 09:13, Jeff Lightner wrote:
> I had an issue with using dig to query my reverse lookups so had to
> create separate entries in named.conf like:
> 
> # Special notation required for internet delegation (e.g. dig -x ...)
> #
> zone "192/27.84.44.12.IN-ADDR.ARPA" {
>         type master;
>         file "arpa.12.44.84";
>         allow-transfer { watercom; };
>         allow-query { any; };
> };
> 
> # Standard notation required for direct lookups (e.g. dig @mydnshost -x
> ...)
> #
> zone "84.44.12.IN-ADDR.ARPA" {
>         type master;
>         file "arpa.12.44.84";
>         allow-transfer { watercom; };
>         allow-query { any; };
> };

the same zone file for your /27 and whole /24 ? This way you won't see
reverse names for rest of the /24, which may cause problems to you.

> That is to say for most purposes the first entry worked fine but if I
> specified my host to dig the record from it would complain about
> 84.44.12.in-addr.arpa not found.

it does not exist. Your ISP seems to have your delegation records in the
44.12.in-addr.arpa zone. However 192/27.84.44.12.in-addr.arpa is delegated
to 3 servers, of which 2 exist, of which only one returns answer...

> Notice both records point to the same arpa zone file.

Yes, I have, see my comment above.

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