Hiya,
On 19/09/2023 01:45, Sean Turner wrote:
Hi! After discussions with the authors of draft-ietf-tls-esni, Joe and I would like to determine whether there is consensus to request two early code point assignments; see RFC 7120. One is for the encrypted_client_hello extension and one is for the ech_required alert; see s11 of the I-D. Please let the list know by 03 October 2023 if you support these early allocations.
I support doing that. I wonder if we also need to say something about the ech= SVCB parameter value 5 that's reserved at [1]? Not sure, but maybe no harm to make that "official" at the same time if possible. (There could be current code that assumes that 5 in a wire- format HTTPS RR value maps to 0xff0d within an ECHConfigList even if that isn't really right.) I'd also like if we had some agreement about how to handle experiments that should migrate from current codepoints to new ones. I don't really mind how we do that, but it should help if we try publicly co-ordinate the timing for changing from 0xff0d to a new codepoint. Given there aren't that many implementations or deployments, a flag-day might be ok, (or even useful?) but I dunno if a flag-day would be ok for everyone, or if we need to plan for some short-ish duration during which both old and new codepoints warrant some level of support, just so as not to break existing things and look bad:-) And if we will have some such interregnum, then it'd probably also be good to say if we expect that to be handled via ECHConfigList's that have >1 entry and version or if we expect people to support >1 HTTPS RR value be published. I think all of that could be handled via a "here's the plan:..." mail sent to this list though and doesn't need more than that. Cheers, S.[1] https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-svcb-https#name-initial-contents
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