I'm looking for feedback on limiting the name redaction mechanism specified
in section 4.2 of RFC6962-bis
<https://tools.ietf.org/html/draft-ietf-trans-rfc6962-bis-14#section-4.2>.

My proposal is to allow redaction exactly only of the first DNS-ID in the
subjectAltName extension.
Right now 6962-bis allows redaction of multiple DNS-IDs by requiring an
extension with repeating integer values, each indicating the number of
redacted labels in the corresponding DNS-ID entry.

I am proposing this to simplify implementing clients - not having loop over
one extension, match it with fields in another extension and dealing with
the edge cases where there's a mismatch is one less source of bugs.

However it may enforce certain limitations on CAs / domain owners that are
fundamental to this feature (each redacted domain name will need to be in a
separate certificate, for a start, or not being able to redact a CN-ID).
Hence feedback is appreciated.

Eran
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