Help with Bind config syntax for reverse DNS on subnet

[Chuck Swiger]

Rob wrote:
> Hi, was hoping someone could help me with the correct syntax in my 
> named.conf for reverse DNS on a small subnet.
> 
> Say I have 10.0.0.0/27, such that actual addresses are 10.0.0.0 through 
> 10.0.0.31  -- If I add a zone like:
> zone "0.0.10.in-addr.arpa" {
>        type master;
>        file "master/0.0.10.in-addr.arpa";  };
> 
> ...I can define addresses for my little block, but reverse lookups on 
> the rest of 10.0.0.x seem to fail.  What's the correct way to configure 
> Bind for this?

That's known as "Classless IN-ADDR.ARPA delegation", and is documented here:

   http://www.ietf.org/rfc/rfc2317.txt

-- 
-Chuck