Reverse DNS with CIDR
Ed Geiger
I am having problems with getting reverse DNS to
operate properly with variable length subnet mask
and CIDR. If I dig (2.2) in reverse on an
address of a host I get a CNAME from the
level above instead of a PTR record from the
SOA host within the domain. It looks like a problem
within the named.boot file or reverse data file on the
DNS server within the lower domain.
The CNAME looks like:
33.32.23.24.192.in-addr.arpa.
the CIDR network is 192.24.23.32/27
If things are working correctly I would expect a
PTR record with the hostname not a CNAME.
Any pointers to an online commentary would be
appreciated. I have searched for pertinent
documents and have come up empty.
NEW...@zebra.uas.se
Relay-Version: ANU News - V6.1B10 04/18/95 OpenVMS AXP V6.1; site news.uas.se
Path: news.uas.se!news.networkc.net!newsfeed.uu.se!newsfeed.sunet.se!news99.sunet.se!news01.sunet.se!38.8.16.2.MISMATCH!psinntp!news.idt.net!ais.net!howland.erols.net!newsfeed.internetmci.com!199.1.48.12!newsfeed.usit.net!news.usit.net!not-for-mail
Newsgroups: comp.protocols.dns.bind,comp.protocols.tcp-ip.domains
Subject: Reverse DNS with CIDR
Message-ID: <656pvk$oj4$1...@news.usit.net>
From: "Ed Geiger" <gei...@usit.net>
Date: Sat, 22 Nov 1997 14:23:14 -0000
Organization: United States Internet, Inc.
NNTP-Posting-Host: 208.10.173.187
X-Newsreader: Microsoft Outlook Express 4.71.2038.0
X-MimeOLE: Produced By Microsoft MimeOLE V4.71.2039.0
Lines: 25
Michiel Boland
Hi
you need to inform dig that you are interested in a PTR record;
normally dig sends out a query for ANY record when the -x flag
is used.
Example:
dig ptr -x 192.24.23.32
instead of just
dig -x 192.24.23.32
On Sat, 22 Nov 1997, Ed Geiger wrote:
> I am having problems with getting reverse DNS to
> operate properly with variable length subnet mask
> and CIDR. If I dig (2.2) in reverse on an
> address of a host I get a CNAME from the
> level above instead of a PTR record from the
> SOA host within the domain.
--
Michiel Boland <bol...@diva.nl>
Digital Valley Internet Professionals
Duivendaal 4, Wageningen, The Netherlands
Phone: +31 317 465555, Fax: +31 317 460276
Michel Lavondes
In message <656pvk$oj4$1...@news.usit.net>, "Ed Geiger" writes:
> If I dig (2.2) in reverse on an
> address of a host I get a CNAME from the
> level above instead of a PTR record from the
> SOA host within the domain.
>
Hmm, think I've seen that before - AFAIR, it works if you
do dig -x a.b.c.d ptr instead of dig -x a.b.c.d
Michel Lavondes (lavo...@tidtest.total.fr), speaking only for himself
Sick days are just like vacation days, only with sound effects.
Jesús M. NAVARRO
Ed Geiger escribió en mensaje
<656pvk$oj4$1...@news.usit.net>...
> I am having problems with getting reverse DNS to
>operate properly with variable length subnet mask
>and CIDR. If I dig (2.2) in reverse on an
>address of a host I get a CNAME from the
>level above instead of a PTR record from the
>SOA host within the domain. It looks like a problem
>within the named.boot file or reverse data file on the
>DNS server within the lower domain.
Well, I completly locked out with this bussiness (meant
CIDR and DNS inverse resolution); although I made a
search through Internet I didn't find any valuable
information. Please, can someone address me?
SALUD,
Jesus
Cricket Liu
Barry Margolin
In article <65jp4o$gpp$1...@celes.unizar.es>,
=?iso-8859-1?Q?Jes=FAs_M._NAVARRO?= <jm...@gustavo.mizar.csic.es> wrote:
>Well, I completly locked out with this bussiness (meant
>CIDR and DNS inverse resolution); although I made a
>search through Internet I didn't find any valuable
>information. Please, can someone address me?
ftp://ftp.rs.internic.net/internet-drafts/draft-ietf-dnsind-classless-inaddr-03.txt
--
Barry Margolin, bar...@bbnplanet.com
GTE Internetworking, Powered by BBN, Cambridge, MA
Support the anti-spam movement; see <http://www.cauce.org/>
Please don't send technical questions directly to me, post them to newsgroups.