Re: [Driu] [DNSOP] [Doh] Resolverless DNS Side Meeting in Montreal

Ted Lemon <mellon@fugue.com> Tue, 10 July 2018 16:42 UTC

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From: Ted Lemon <mellon@fugue.com>
Date: Tue, 10 Jul 2018 12:41:46 -0400
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To: Joe Abley <jabley@hopcount.ca>
Cc: Adam Roach <adam@nostrum.com>, DoH WG <doh@ietf.org>, driu@ietf.org, dnsop WG <dnsop@ietf.org>, Paul Wouters <paul@nohats.ca>, Patrick McManus <pmcmanus@mozilla.com>, Philip Homburg <pch-dnsop-3@u-1.phicoh.com>, HTTP Working Group <ietf-http-wg@w3.org>
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Subject: Re: [Driu] [DNSOP] [Doh] Resolverless DNS Side Meeting in Montreal
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On Tue, Jul 10, 2018 at 12:34 PM, Joe Abley <jabley@hopcount.ca>; wrote:

> > But this is really equivalent in just about every important way to
> sending the normal <img src="https://example.com/img/f.jpg"> along with a
> pushed DNS record that indicates that "example.com" resolves to
> "192.0.2.1" -- and this latter thing is (to my understanding, at least) in
> scope of the conversation that Patrick is proposing to have.
>
> My question is why you would involve the DNS at all if all the
> performance-based resolution decisions can be made without it. You're
> just adding cost and complexity without benefit


The ip= modifier would be a great way to arrange for something to look like
it came from a different source than its actual source.   I'm sure there's
an attack surface in there somewhere.