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Shepherd writeup

1. Summary
Pete Resnick is the document shepherd. Barry Leiba
is the responsible AD.


The IDNA specifications for internationalized domain names combine
rules that determine the labels that are allowed in the DNS without
violating the protocol itself and an assignment of responsibility,
consistent with earlier specifications, for determining the labels
that are allowed in particular zones. Conformance to IDNA by
registries and other implementations requires both parts. Experience
strongly suggests that the language describing those responsibilities
was insufficiently clear to promote safe and interoperable use of the
specifications and that more details and discussion of circumstances
would have been helpful. Without making any substantive changes to
IDNA, this specification updates two of the core IDNA documents (RFC
5980 and 5891) and the IDNA explanatory document (RFC 5894) to
provide that guidance and to correct some technical errors in the

This document is primarily aimed at registries and registrars, giving
deployment and operations guidance for IDNA. If it were up to the
shepherd, that reads like the very definition of a BCP document (see RFC
2026, section 5, paragraph 2). However, this "updates" RFC 5891,
a Standards Track document, which speaks to making this Standards Track.

2. Review and Consensus
This document has not been formally reviewed on any IETF list, including
on the i18ndir list, though a few key directorate participants have read
and commented on the document.  The document was mentioned on the
idna-update list, and some comments came from there. That said, this is a
document regarding recommendations to the registry and registrar
community that could only be developed by experts on IDNA, of which the
IETF has very few. A 4-week IETF-wide Last Call (as required for
individual submissions) is more than enough time for the i18ndir list to
remind experts to take a final look and confirm that there is community
consensus, insofar as that ever exists for these kinds of documents.

As a matter of style, there is a lot of repetitive text in the first 4
sections. However, I'm well aware of the target audience of this
document, and so this level of explication is probably reasonable.

3. Intellectual Property
Each author has stated that their direct, personal knowledge of any IPR
related to this document has already been disclosed, in conformance with
BCPs 78 and 79. There has been no other discussion of IPR regarding this
document, and the shepherd has no reason to believe that any applicable
IP exists.

4. Other Points
The idnits check has a few things:

References to 1591 and 5894 are downrefs, but they are reasonable and
have been called out during Last Call.

Other reference nits are false positives.

The Abstract appropriately talks about the updates, even though idnits
couldn't parse it. No problem there.

All of the other checklist items seem satisfied.