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Re: [Add] fixing coffee shop brokenness with DoH

Joe Abley <jabley@hopcount.ca> Thu, 25 July 2019 08:50 UTC

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From: Joe Abley <jabley@hopcount.ca>
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Date: Thu, 25 Jul 2019 01:49:59 -0700
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To: Eric Rescorla <ekr@rtfm.com>
Cc: Brian Dickson <brian.peter.dickson@gmail.com>, Jim Reid <jim@rfc1035.com>, "add@ietf.org" <add@ietf.org>, Ted Lemon <mellon@fugue.com>, Rob Sayre <sayrer@gmail.com>
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Subject: Re: [Add] fixing coffee shop brokenness with DoH
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On Jul 24, 2019, at 20:10, Eric Rescorla <ekr@rtfm.com> wrote:

> This also seems like an edge case. The vast majority of clients do not have two independently controlled resolvers..

Some experiments by APNIC Labs demonstrate a significant population of
stub resolvers that have google public DNS configured as one of
multiple independently-operated resolvers. It was more common than I
was expecting.

I don't know of any experiments that test the general case (I don't
*think* APNIC's experiment did, and maybe Google is special), but it
may make sense to support your statement above with data if it turns
out to be an important assumption.


Joe

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