RFC2317 issues

[Kevin Darcy]

Kirk Rafferty wrote:

> Greetings,
>
> A Google Groups search on RFC2317 was a great help to understanding RFC2317
> a little better (not to mention the RFC itself), but I'm still running into
> some problems I hope somebody can help me with.
>
> I'm using Bind 8.2.3.
>
> We have been assigned a subnet of 204.144.241.64/26.
>
> My /etc/named.conf entry looks thus:
>
> -----------------------------------------
>
> zone   "26/64.241.144.204.in-addr.arpa" {
>         type master;
>         file "db.204.144.241";
> };
>
> -----------------------------------------
>
> My (abridged) zone file looks like:
>
> ------------------------------------------------------------
> $ORIGIN 26/64.241.144.204.in-addr.arpa.
> $TTL 86400
>
> @ IN SOA hadrian.fpcc.net. hostmaster.fpcc.net. (
>                         13      ; Serial
>                         10800   ; Refresh after 3 hours
>                         3600    ; Retry after 1 hour
>                         604800  ; Expire after 1 week
>                         86400 ) ; Minimum TTL of 1 day
>
> ;
> ; Name Servers
> ;
>
> @               NS      ns0.fpcc.net.
> @               NS      ns1.fpcc.net.
>
> 65              PTR          host1.fpcc.net.
> 66              PTR          host2.fpcc.net.
>
> (...)
>
> ------------------------------------------------------------
>
> The problem is that I cannot reverse-resolve.  Various dig's report the
> CNAME, but I cannot actually get a reverse lookup:
>
> $ dig -x 204.144.241.65
> ...
> ;; ANSWER SECTION:
> 65.241.144.204.in-addr.arpa. 43200 IN   CNAME   65.26/64.241.144.204.in-addr.arpa.
> ...
>
> $ nslookup 204.144.241.65
> Server:         192.168.0.14
> Address:        192.168.0.14#53
>
> ** server can't find 65.241.144.204.in-addr.arpa.: NXDOMAIN
>
> Any help in pointing out what I'm doing wrong would be greatly appreciated.

Looks like they aliased the names to the 26/64.241.144.204.in-addr.arpa domain, but
they delegated the 64/26.241.144.204.in-addr.arpa zone. Oops. You should ask them
which way around they'd prefer.


- Kevin