I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the
IESG.  These comments were written primarily for the benefit of the
security area directors.  Document editors and WG chairs should
treat these comments just like any other last call comments.

Document: draft-ietf-precis-7564bis-07
Reviewer: Matthew A. Miller
Review Date: 2017-06-13
IETF LC End Date: 2017-06-13
IESG Telechat date: 2017-07-06

Summary:

This document is ready to be published as a Standards Track document.

This document defines a framework application protocols use to
prepare, compare, and enforce conformance of internationalized strings.
It obsoletes RFC 7564.

This document is well written, and reinforces the security concerns
discussed in Section 12 with references in the most relevant sections
throughout the document.  While much of it essentially proclaims
"be aware herein be dragons", the arguments for not proscribing more
are well laid out.

Major Issues:  NONE

Minor Issues: NONE

Nits: NONE