Broken Reverse Zone

[Jon Jensen]

On Sat, 1 Dec 2007, Charles Curley wrote:

> Why does this not work?
>
> --------------------------------------------------
> $TTL 3D; Reverse zone IP->DNS
> @	IN	SOA	localdomain.	hostmaster.localdomain. (
> 			2007120101	;
> 			8H		;
> 			2H		;
> 			1W		;
> 			1D )		;
>
>
> 	IN	NS	phoenix.localdomain.
>
> 192.168.1.47	IN	PTR	phoenix.localdomain.
>
> 192.168.1.3	IN	PTR	charlesc.localdomain.
> --------------------------------------------------
>
> I generated that with glbindadmin. Bind loads it sucessfully and runs
> with it. The forward zone equivalent works. But I get this:
>
> --------------------------------------------------
> root at phoenix:/var/named/etc# nslookup 192.168.1.47 localhost
> Server:         localhost
> Address:        127.0.0.1#53
>
> *** Can't find 47.1.168.192.in-addr.arpa.: No answer

What is the named.conf zone definition? If it's "1.168.192.in-addr.arpa", 
then your problem is that you're double-defining the first 3 octets 
192.168.1.

Your zone file should probably look like:

47  IN  PTR  phoenix.localdomain.

etc.

Or else you may be able to define the zone file as applying to 
"in-addr.arpa" and use your zone file as is, but that seems ill-advised, 
since it would break all other reverse lookups for anywhere not defined in 
your zone file.

Jon

-- 
Jon Jensen
End Point Corporation
http://www.endpoint.com/