Re: [Doh] [Ext] Fallback to untrusted DOH servers

Paul Hoffman <paul.hoffman@icann.org> Sun, 22 April 2018 15:15 UTC

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From: Paul Hoffman <paul.hoffman@icann.org>
To: Mateusz Jończyk <mat.jonczyk@o2.pl>
CC: DoH WG <doh@ietf.org>
Thread-Topic: [Doh] [Ext] Fallback to untrusted DOH servers
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Date: Sun, 22 Apr 2018 15:15:25 +0000
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Subject: Re: [Doh] [Ext] Fallback to untrusted DOH servers
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On Apr 22, 2018, at 6:21 AM, Mateusz Jończyk <mat.jonczyk@o2.pl> wrote:
> I think if Your interpretation of DOH is correct, that the text is unclear there
> and should be clarified.
> I would suggest to add the following clarification:
> 
> 	A client MAY use an untrustworthy DNS API server as a fallback.

This seems horribly dangerous without a clear definition of "fallback".

> I am going to submit a draft that specifies how a fallback DNS API server could
> be retrieved from DHCP.

That would be quite useful. If you do that, wouldn't it define the DNS API server as trusted?

--Paul Hoffman