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Re: [TLS] DNS-based Encrypted SNI

Patrick McManus <pmcmanus@mozilla.com> Tue, 03 July 2018 15:26 UTC

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From: Patrick McManus <pmcmanus@mozilla.com>
Date: Tue, 03 Jul 2018 11:26:51 -0400
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To: Ben Schwartz <bemasc=40google.com@dmarc.ietf.org>
Cc: Eric Rescorla <ekr@rtfm.com>, "<tls@ietf.org>" <tls@ietf.org>
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Subject: Re: [TLS] DNS-based Encrypted SNI
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On Tue, Jul 3, 2018 at 11:20 AM, Ben Schwartz <
bemasc=40google.com@dmarc.ietf.org> wrote:

>
> One concern I've heard many times is that we can't add non-A/AAAA queries
> to a browser's critical path because there are middleboxes and buggy
> recursives that will just drop them, leading to a DNS timeout delay on
> every new socket.  However, for encrypted SNI I think we can ignore this by
> focusing on clients with DPRIVE or DOH enabled, which should avoid these
> kinds of problems.
>
>
yes, and of course encrypting sni is a lot more valuable when the dns query
is also encrypted.

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