Re: [DNSOP] Alias mode processing in auths for draft-ietf-dnsop-svcb-https-01

Tony Finch <dot@dotat.at> Tue, 11 August 2020 22:38 UTC

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Date: Tue, 11 Aug 2020 23:38:07 +0100
From: Tony Finch <dot@dotat.at>
To: Ben Schwartz <bemasc=40google.com@dmarc.ietf.org>
cc: Brian Dickson <brian.peter.dickson@gmail.com>, dnsop <dnsop@ietf.org>, Pieter Lexis <pieter.lexis@powerdns.com>
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Subject: Re: [DNSOP] Alias mode processing in auths for draft-ietf-dnsop-svcb-https-01
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Ben Schwartz <bemasc=40google.com@dmarc.ietf.org> wrote:
> On Tue, Aug 11, 2020, 5:51 PM Brian Dickson <brian.peter.dickson@gmail.com>
> wrote:
> >
> > I think the condition might be, "both in bailiwick and in the same zone"
> > meaning "in bailiwick and not below a zone cut"?

I don't think that makes sense - "bailiwick" is about glue. Maybe you
could say "in the same zone (not below a zone cut)" and refer to RFC 1034
section 4.2 for the definition of a zone.

> It seems to me that returning a (downward) delegation could actually be
> useful.  So why not include that?

Additional section processing does not normally include referrals. That
would be weird and new. I thought the point of the SVCB record was to
appear to existing auth and recursive DNS servers as much as possible like
a bog standard RR type, i.e. just wire and presentation format and a bit
of normal additional section processing. Which is basically what the draft
says now, though it unnecessarily respecifies additional section
processing.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
Mull of Kintyre to Ardnamurchan Point: Variable, mainly north or northwest, 2
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Moderate or good, occasionally very poor.