[120332] in North American Network Operators' Group
Re: DNS question, null MX records
daemon@ATHENA.MIT.EDU (Joe Abley)
Wed Dec 16 15:54:10 2009
From: Joe Abley <jabley@hopcount.ca>
In-Reply-To: <21D41A38B8859B4A97B1AE2313922B8A820C60F5E3@concertiabl02.concertia.com>
Date: Wed, 16 Dec 2009 20:53:20 +0000
To: Brian Dickson <Brian.Dickson@concertia.com>
X-SA-Exim-Mail-From: jabley@hopcount.ca
Cc: "'nanog@nanog.org'" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2009-12-16, at 20:44, Brian Dickson wrote:
> So, how about using sink.arpa. as a(n) MNAME?
That was another imagined use of SINK.ARPA.
> Or perhaps, one of the hosts listed in AS112?
My personal opinion is that there's an operational need for some people =
to receive an explicit reply from AS112 servers, or at least that a =
change in current behaviour will have noticeable consequences.
> Does an MNAME really need to be fully qualified?
All names in the DNS are fully-qualified on the wire, regardless of what =
short-cuts are available in the zone file format understood by =
particular pieces of software.
> Cute idea: use the "search" of non-fully-qualified names, to direct =
bad UPDATE traffic to a very local server, e.g. "ns1" (no dot).
All names in the DNS are fully-qualified on the wire.
> It would also be nice to have a place-holder in DNS that "resolves" =
(in the loose sense) to an appropriate pre-defined "thing", like the =
default nameserver for a client, or "yourself" for a resolver.
Beauty is apparently in the eye of the beholder :-)
Joe
