[143500] in North American Network Operators' Group
Re: v4/v6 dns thoughts?
daemon@ATHENA.MIT.EDU (=?utf-8?B?TcOlbnM=?= Nilsson)
Thu Aug 11 01:45:33 2011
Date: Thu, 11 Aug 2011 07:44:56 +0200
From: =?utf-8?B?TcOlbnM=?= Nilsson <mansaxel@besserwisser.org>
To: Andrew Parnell <andrew@parnell.ca>
In-Reply-To: <CACrxPKk7MkO1ZC4NESV3s71t+gV6eQZnD3PmCC4qbFejcsBxVA@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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Subject: Re: v4/v6 dns thoughts? Date: Thu, Aug 11, 2011 at 12:01:15AM -040=
0 Quoting Andrew Parnell (andrew@parnell.ca):
> On Tue, Aug 9, 2011 at 7:36 PM, Owen DeLong <owen@delong.com> wrote:
> >
> > I also don't recommend doing the foo.v4/foo.v6 thing in your forwards. =
There's
> > really no advantage to do it. Most tools either have separate IPv4/IPv6=
variants
> > or have command-line switches for address-family control if you care.
>=20
> For most tools that I ordinarily use, I would certainly agree with
> this. The only exception might be from a web browser; while there are
> ways that they can be reconfigured to only use certain IP versions in
> certain cases, it is probably more straightforward to use
> www.ipvN.domain.tld or a similar name.
>=20
> For reverse DNS, I completely agree that there is no reason to use a
> different name.
While I am no enemy to /56 allocations (cross-thread alert!) I for the
most part tend to agree with Owen and would so here too. Possibly with the
addition of separate names in a subdomain for trouble-shooting. Selecting
protocol is something best done slightly lower in the stack. I did so
with $INCLUDE directives[0] at a former employer. For routers, where it
matters much more than for end-user stuff like web servers.
=20
--=20
M=C3=A5ns Nilsson primary/secondary/besserwisser/machina
MN-1334-RIPE +46 705 989668
DIDI ... is that a MARTIAN name, or, are we in ISRAEL?
[0] Like so:=20
$ORIGIN isp.tld.
$INCLUDE "file-with-AAAA-records-without-FQDN"
$INCLUDE "file-with-A-records-without-FQDN"
$ORIGIN v4.isp.tld.
$INCLUDE "file-with-A-records-without-FQDN"
$ORIGIN v6.isp.tld.
$INCLUDE "file-with-AAAA-records-without-FQDN"
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