Re: [dns-privacy] [Ext] Artart last call review of draft-ietf-dprive-unilateral-probing-12
Paul Hoffman <paul.hoffman@icann.org> Thu, 07 September 2023 16:18 UTC
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From: Paul Hoffman <paul.hoffman@icann.org>
To: Bron Gondwana <brong@fastmailteam.com>
CC: "art@ietf.org" <art@ietf.org>, "dns-privacy@ietf.org" <dns-privacy@ietf.org>, "draft-ietf-dprive-unilateral-probing.all@ietf.org" <draft-ietf-dprive-unilateral-probing.all@ietf.org>, "last-call@ietf.org" <last-call@ietf.org>
Thread-Topic: [Ext] Artart last call review of draft-ietf-dprive-unilateral-probing-12
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Date: Thu, 07 Sep 2023 16:18:23 +0000
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Subject: Re: [dns-privacy] [Ext] Artart last call review of draft-ietf-dprive-unilateral-probing-12
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Thanks for the review! On Sep 7, 2023, at 7:16 AM, Bron Gondwana via Datatracker <noreply@ietf.org> wrote: > My only concern is that it does fall back very easily to cleartext, for a long > damping period. As a protocol implementer myself, I would generally expect to > retry something one or two more times over the course of a few minutes before > giving up entirely for 24h, since the server at the other end may have just > been restarting and either dropped an existing connection or rejected a SYN > packet, but be ready a moment later. I'd be happy with a limit of something > like 5 tries over 2 minutes (one every 30 seconds) before giving up. In Section 4.3, the "damping" parameter has a "suggested default" of 1 day. That's a suggestion, not at all a requirement. It was established based on the idea that almost every domain name has multiple nameservers, and that it is likely that if one server has a failure such as a timeout, the resolver will try the other nameservers (which may or may not be encrypting). Are you proposing a shorter value for "damping", or a note saying "1 day is just the suggested value, you might choose a shorter one if you want"? Or something else? --Paul Hoffman
- [dns-privacy] Artart last call review of draft-ie… Bron Gondwana via Datatracker
- Re: [dns-privacy] [Ext] Artart last call review o… Paul Hoffman
- Re: [dns-privacy] [art] [Ext] Artart last call re… Bron Gondwana
- Re: [dns-privacy] [art] [Ext] Artart last call re… Paul Hoffman
- Re: [dns-privacy] [art] [Ext] Artart last call re… Rob Sayre
- Re: [dns-privacy] [art] [Ext] Artart last call re… Daniel Kahn Gillmor
- Re: [dns-privacy] [art] [Ext] Artart last call re… Rob Sayre