I think this approach would really hamper adoption.
If we simply added a new QTYPE which permitted a server to respond with
all matching A and AAAA records then that would solve a lot of problems.
"fixing" multiple queries per message by an extension option may fail
on every DNS inspection firewall out there.
A new QTYPE approach would mean DNS server admins would need to do
nothing except update their server to one that supports it.
Probably there are some more subtle issues that haven't come to mind
that someone can think of. like what happens when a new client sends a
request to an old server, it could just make it worse (have to do 3
lookups instead of 2).
Shame it wasn't put in from the start.
Alternatively, we could allow servers to respond with AAAA records in
additional section if the QTYPE was for A?
Adrien
------ Original Message ------
From: "Rob Austein" <s...@hactrn.net>
To: "dnsop@ietf.org" <dnsop@ietf.org>
Sent: 12/04/2016 7:00:37 a.m.
Subject: Re: [DNSOP] AAAA4Free
At Mon, 11 Apr 2016 15:54:05 +0200, Shane Kerr wrote:
At 2016-04-08 11:28:12 -0300 Ray Bellis <r...@bellis.me.uk> wrote:
> May I please remind the WG of draft-bellis-dnsext-multi-qtypes-01
I note that your idea was about 3 years ago. When it was mentioned,
Alfred Hönes noted his ideas about his presented 3 years before that.
My guess is that we could probably go back and every 3 or 4 years
find
a similar proposal. :)
Going back at least to the mid '90s, yes. Don't recall whether this
came up in the '80s. :)
As I recall, the thing that stopped this every time was lack of
consensus on pesky details such as "to which QNAME does the RCODE
apply when this fails" and "to which QNAME does the AA bit apply?"
It's possible that DNSSEC-aware stub resolvers would provide some
leverage here, since fields like RCODE and the AA bit are somewhat
redundant if one can just check the freaking signatures.
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