From owner-freebsd-stable Thu Oct 4 3:23:13 2001 Delivered-To: freebsd-stable@freebsd.org Received: from rucus.ru.ac.za (rucus.ru.ac.za [146.231.29.2]) by hub.freebsd.org (Postfix) with SMTP id 6BD2737B407 for ; Thu, 4 Oct 2001 03:23:07 -0700 (PDT) Received: (qmail 50251 invoked by uid 1040); 4 Oct 2001 10:23:05 -0000 Date: Thu, 4 Oct 2001 12:23:05 +0200 From: =?iso-8859-1?Q?David_Sieb=F6rger?= To: freebsd-stable@freebsd.org Subject: Re: sdflkj Message-ID: <20011004122305.A41892@rucus.ru.ac.za> References: <20011004111204.A7847@rucus.ru.ac.za> <200110041003.f94A3ex15230@boyd.cc.uit.no> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.2.5i In-Reply-To: <200110041003.f94A3ex15230@boyd.cc.uit.no>; from Ingeborg.Hellemo@cc.uit.no on Thu, Oct 04, 2001 at 12:03:40PM +0200 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu 2001-10-04 (12:03), Ingeborg Hellemo wrote: > drs-stable@rucus.ru.ac.za said: > > On Thu 2001-10-04 (08:59), Ceri wrote: > > > Umm, you can't delegate reverse DNS for a /29 _without_ using CNAMEs. > > > Not true. While the use of CNAMEs is suggested by RFC 2317, NS > > records can be used too. The technique is described at: > > > http://homepages.tesco.net./~J.deBoynePollard/FGA/avoid-rfc-2317-delega > > tion.html > > Do _not_ use this technique! > > Cite from [snip] Yes. Specifically, in one of the examples, J. de Boyne Pollard writes: You create a "zone" file for a suitable superdomain that encloses all of the relevant reverse lookup domains (the easiest option being to just use "in-addr.arpa."): $ORIGIN in-addr.arpa. @ 1D IN SOA ns hostmaster.in-addr.arpa. ( 0 3600 120 3600 3600 ) @ 1D IN NS ns Which, I would agree with Roy Arends, isn't a good idea. Though I still think it's possible to do reverse delegation of individual IPs using NS records (just as one delegates individual class-Cs using NS records) and thus avoid RFC 2317's CNAMEs. I need to play with this myself one day. But this is way off-topic now.... -- David Siebörger drs-stable@rucus.ru.ac.za To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message