Classless reverse lookups
Kevin Darcy
kcd at daimlerchrysler.com
Tue Mar 27 22:32:46 UTC 2001
You won't be able to do a "dig -x 192.168.1.230" successfully until your
ISP sets up their reverse zone with the delegation and the CNAMEs, or you
temporarily set up a "fake" version of their reverse zone.
To check the entry in the absence of CNAMEs, try "dig
230.224/27.1.168.192.in-addr.arpa ptr".
- Kevin
Sean German wrote:
> Howdy,
>
> I feel a little like a brick asking about a subject for which there is so
> much material in the archives; then again if it was a simpler issue there
> wouldn't be as many questions on the subject.
>
> Anyway, Bind 8.2.3 on RH 7 running chroot'ed. All is well except the
> classless in-addr.arpa lookups on one zone. IP #s in that classless range
> aren't recognized as being in that zone. A 'dig -x 192.168.1.230' (all IPs
> have been changed to protect the innocent) gives the SOA of the ISP
> providing the IP range.
>
> I know getting the ISP and the rest of the world to recognize my dns as
> master for the zone is a whole 'nother ball if wax, but at this point I'm
> working on getting my server to act as authority for the classless range.
>
> I read the rfc at http://www.ietf.org/rfc/rfc2317.txt but haven't been able
> to pick up where I went wrong. Named isn't logging any errors or warnings
> when loading the zones.
>
> Any pointers are greatly appreciated.
>
> Sean.
>
> "named.conf"
> zone "224/27.1.168.192.in-addr.arpa" IN {
> type master;
> file "named.192.168.1.224-27";
> };
>
> "named.192.168.1.224-27"
> $ORIGIN 224/27.1.168.192.in-addr.arpa.
> $TTL 20d
> @ IN SOA ... ... ( ... )
> ; Name Servers
> IN NS ns1.sprockets.com.
> ; Addresses
> 230 PTR mail.sprockets.com.
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