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Re: [DNSOP] updated to draft-wing-dnsop-structured-dns-error-page-01

Ben Schwartz <bemasc@google.com> Fri, 12 November 2021 15:24 UTC

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From: Ben Schwartz <bemasc@google.com>
Date: Fri, 12 Nov 2021 10:24:41 -0500
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To: Petr Špaček <pspacek@isc.org>
Cc: dnsop@ietf.org
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Subject: Re: [DNSOP] updated to draft-wing-dnsop-structured-dns-error-page-01
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On Wed, Nov 10, 2021 at 11:18 AM Petr Špaček <pspacek@isc.org> wrote:
...

> 2. If the new option was present in query, then DNS responder sends back
> Extended DNS Errors option (EDE, RFC 8914) with INFO-TEXT field
> formatted according to structured JSON specified in this draft.
>

I like this idea a lot.  In fact, I don't even think we need a new option.
It's not as if INFO-TEXT is already widely used.  We can just declare
something like "if the INFO-TEXT is JSON, here's what it means".

This also allows us to remove the "access denied" emphasis, and broaden our
focus to explaining all kinds of resolution failures.

I also agree that requiring an HTTP URL seems out of place here.  I would
prefer an "ID" string of unspecified contents, so that operators can use
UUIDs, domain names holding TXT records, URIs, or whatever mechanism they
want to identify failure types.

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