reverse lookup for single address

[Kevin Darcy]

Tony Tung wrote:

>Hi,
>
>I'm trying to get my name server on my server to answer reverse lookup.
>That is, my server lives at 12.34.56.78 (address faked), but that is the
>only address I have.  I want to be able to do this from a remote server:
>
>nslookup 12.34.56.78 12.34.56.78
>
>and get a correct resolution.  I've managed to do that much.  However, I
>can no longer reverse-resolve other addresses in the same subnet from my
>own server, i.e., I cannot reverse-map 12.34.56.80.
>
>Can someone give me some tips?  This is what I have in my named.conf:
>
>zone "56.34.12.in-addr.arpa" IN {
>        type slave;
>        file "master/pub.rev";
>        masters {
>            64.81.79.2;
>            216.231.41.2;
>        };
>};
>
>and in pub.rev:
>
>$ORIGIN 56.34.12.in-addr.arpa.
>$TTL    3600
>@       IN      SOA
>myserver.org. root.myserver.org.  (
>                                20030406        ; Serial
>                                3600    ; Refresh
>                                900     ; Retry
>                                3600000 ; Expire
>                                3600 )  ; Minimum
>        IN      NS      myserver.org.
>78      IN      PTR     myserver.org.
>
You're a slave for the zone. The obvious way to get resolution for other 
addresses in that range is to have whoever is master for the zone add 
the relevant PTR records.

                                                                         
   - Kevin