Re: Question about bind configuration.
Philippe Troin <phil@fifi.org> writes:
> On 07 Jul 1997 13:23:32 PDT Rob Browning (rlb@cs.utexas.edu) wrote:
>
> > I was trying to set up bind for a small (half class C) subnet, and
> > bind seemed to refuse to do the reverse lookups for the subnet unless
> > I set it up to handle the entire C subnet. Is there some kind of
> > masking trick I'm not aware of, or is there somewhere I should RTFM?
> > I didn't see anything in the docs or a book I had...
>
> Reverse maps need to include at least a full class C subnet, yes, unfortunately.
> It's because reverse lookups work by doing recursive lookups in the in-addr.arpa "special" domain.
>
> Reverse looking up 127.3.4.5 will end up lookup up 5.4.3.127.in-addr.arpa.
> The minimum reverse table you need to have is 4.3.127.in-addr.arpa.
There's a draft-RFC for setting up classless DNS at
ftp://ftp.nordu.net/internet-drafts/draft-ietf-cidrd-classless-inaddr-02.txt
This draft expired 970525, so there might be a more recent version, og
perhaps a full rfc available by now.
--
Vebjorn Forsmo vebjorn@mo.hiMolde.no vebjorn@hsr.no vforsmo@sn.no
80 13 6B 4B 7C 83 B7 DC 5C 9C A8 AE C0 AD 22 F4 2048/00952325 1995/05/13
To err is human, to forgive is Not Company Policy.
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