Re: [DNSOP] SVCB without A/AAAA records at the service name

Ben Schwartz <bemasc@google.com> Tue, 19 January 2021 15:09 UTC

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From: Ben Schwartz <bemasc@google.com>
Date: Tue, 19 Jan 2021 10:09:45 -0500
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To: Martin Thomson <mt@lowentropy.net>
Cc: dnsop <dnsop@ietf.org>
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Subject: Re: [DNSOP] SVCB without A/AAAA records at the service name
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On Sun, Jan 17, 2021 at 5:57 PM Martin Thomson <mt@lowentropy.net> wrote:

> On Sat, Jan 16, 2021, at 06:01, Ben Schwartz wrote:
> > FWIW, I think this is really an editorial question.
> ...
> > https://github.com/MikeBishop/dns-alt-svc/pull/288
> ...
> > https://github.com/MikeBishop/dns-alt-svc/pull/289
>
> Neither of these work for me.  Both do the same thing in different ways.
> Both are unspecific about what changes might be made to the algorithm.


To my eye, #288 looks extremely specific.  I'm surprised we disagree about
this!


>   That leads to far less certainty about how the information is consumed
> than I think is sensible.
>
> What I'm looking for here is for the specification to describe what
> happens when the protocol needs to fall back to A/AAAA and what happens
> when it does not.


I think #288 is quite "specific" about what happens in that case.  (Whether
it's "sensible" is a separate question.)


>   The first is important, because that is what HTTP will need.  The second
> because I think that is a better approach for any new protocol (I had hoped
> that webtransport would be able to take advantage of this, but they made a
> different choice for reasons I'm yet to understand).
>
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