I have been selected as the DNS Directorate reviewer for this draft. The
DNS Directorate seeks to review all DNS or DNS-related drafts as
they pass through IETF last call and IESG review, and sometimes on special
request. The purpose of the review is to provide assistance to the ADs.
For more information about the DNS Directorate, please see
https://wiki.ietf.org/en/group/dnsdir

The only reference to the DNS is in 9.7.6. Hiding Plaintext Length
where the draft references RFC8467 "Padding Policies for Extension
Mechanisms for DNS (EDNS(0))". This reference is correct and seems
sensible. I am not qualified to comment on the rest of the draft.

From a dnsdir perspective I'm marking this document as ready.