Last Call Review of draft-ietf-ippm-active-passive-04
review-ietf-ippm-active-passive-04-secdir-lc-wallace-2016-01-21-00

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.

This draft aims to provide clear definitions for Active and Passive
performance assessment as well as defining Hybrid methods and establishing
means of evaluating new methods as they emerge. The document relies
heavily on textual references to other specifications, which can at times
be a bit tedious for the reader but I have no particular suggestions
regarding this point and it's probably fine for a document that is aiming
to corral various earlier concepts. The referenced security and privacy
considerations were very good (if nearly as long as this spec itself). One
minor point, section 4.2 might be better placed before the current section
4.1 to better set-up the ASCII art in section 4.1.