Reverse DNS on non-network .0 addresses

McNutt, Justin M. McNuttJ at missouri.edu
Thu Jan 31 15:52:04 UTC 2002


> Thanks for the quick reply!

No problem .  :-)

> Here is the other relevant information in this situation:
>=20
> 66.153.40.0/22
>=20
> The zone I am doing reverse on:
> zone "42.153.66.in-addr.arpa"{ type master; file "66.153.42";
> allow-transfer{ 66.153.40.5; }; allow-update{ none;};};
>=20
> @               IN      SOA     ns.a1com.net.  =20
> hostmaster.a1com.net. (
>                         2002013102 ; serial
>                         86400 ; refresh
>                         3600 ; retry
>                         3600000 ; expire
>                         604800 ; default_ttl
>                         )
> @               IN      NS      ns.a1com.net.
> @               IN      NS      ns2.a1com.net.
> 0              IN      PTR     reverse.domain.com.

Nothing I see here shows a problem (your PTR is correct, your SOA is =
correct), which leaves a few possibilities:

1)  There is an $origin directive between the NS records you show and =
the 0 record that is changing the name.

2)  There is another record for 0.42.153.66.in-addr.arpa somewhere that =
is screwing up this one.

3)  There is a problem with your name server itself that is rejecting =
this record (logs?).

If this helps, this is how we accomplished the 'zero' record:

;;;
$ttl 604800
@       IN      SOA     noc.missouri.edu. register.lists.missouri.edu. (
                        2002012502      ; Serial
                        7200            ; Refresh
                        3600            ; Retry
                        604800          ; Expire
                        86400           ; Minimum TTL
                        )
                        in      ns      noc.missouri.edu.
                        in      ns      ns3.missouri.edu.
;
$origin 93.206.128.in-addr.arpa.
;
0       in      ptr     mu-093000.dhcp.missouri.edu.
1       in      ptr     mu-093001.dhcp.missouri.edu.
(etc.)

--J


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