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Re: [Add] [Ext] Draft Posting: CNAME Discovery of Local DoH Resolvers

Eric Rescorla <ekr@rtfm.com> Sat, 27 June 2020 19:22 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Sat, 27 Jun 2020 12:21:42 -0700
Message-ID: <CABcZeBMfiOGn55WUS28uP7cEsbFOiNYRTbDFOxmzV4RPK8_YMQ@mail.gmail.com>
To: John Levine <johnl@taugh.com>
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Subject: Re: [Add] [Ext] Draft Posting: CNAME Discovery of Local DoH Resolvers
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On Sat, Jun 27, 2020 at 11:59 AM John Levine <johnl@taugh.com> wrote:

> In article <CABcZeBNKHHO=n68tj2DMGQkRaZQzbZE=
> DxQBjhH-wzJueRykZw@mail.gmail.com>,
> Eric Rescorla  <ekr@rtfm.com> wrote:
> >> If Firefox has the means of sending a constructed CNAME query and
> process
> >> the response, shouldn't it also (ahem) clearly have the means of
> sending a
> >> constructed TBD1 query and process the response?'''
> >>
> >
> >We do not send a raw query.
>
> Beyond that I gather there is still concern about SOHO routers with
> poorly implemented DNS forwarders that only handle some kinds of
> queries.
>
> R's,
> John
>
> PS: It sure would be nice to have more up to date info about how common
> they are. Maybe I can use some of my 64 million RIPE Atlas credits.
>

I agree it would be nice. We are working on taking some measurements and I
believe Apple is as well.

-Ekr

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