Last Call Review of draft-wilde-sunset-header-07
review-wilde-sunset-header-07-genart-lc-arkko-2018-10-27-00

Request Review of draft-wilde-sunset-header
Requested rev. no specific revision (document currently at 11)
Type Last Call Review
Team General Area Review Team (Gen-ART) (genart)
Deadline 2018-11-20
Requested 2018-10-23
Draft last updated 2018-10-27
Completed reviews Genart Last Call review of -07 by Jari Arkko (diff)
Secdir Last Call review of -07 by Joseph Salowey (diff)
Opsdir Last Call review of -07 by Scott Bradner (diff)
Secdir Telechat review of -08 by Joseph Salowey (diff)
Assignment Reviewer Jari Arkko
State Completed
Review review-wilde-sunset-header-07-genart-lc-arkko-2018-10-27
Reviewed rev. 07 (document currently at 11)
Review result Ready with Issues
Review completed: 2018-10-27

Review
review-wilde-sunset-header-07-genart-lc-arkko-2018-10-27

I am the assigned Gen-ART reviewer for this draft. The General Area
Review Team (Gen-ART) reviews all IETF documents being processed
by the IESG for the IETF Chair.  Please treat these comments just
like any other last call comments.

For more information, please see the FAQ at

<https://trac.ietf.org/trac/gen/wiki/GenArtfaq>.

Document: draft-wilde-sunset-header-??
Reviewer: Jari Arkko
Review Date: 2018-10-26
IETF LC End Date: 2018-11-20
IESG Telechat date: Not scheduled for a telechat

Summary:

This is a well-written, understandable and useful piece of specification. Thanks for writing it.

I had a couple of minor observations, but otherwise the draft is ready to be published.

Major issues:

Minor issues:

The section on relation link type discusses who may be reading the linked material:

   This specification places no
   constraints on the scope or the type of the linked resource.  The
   scope can be for a resource or for a service.  The type is determined
   by the media type of the linked resource, and can be targeted at
   humans, at machines, or a combination of both.

That's fine, but at the same time my understanding is that there is no media type today that would actually be machine readable and usable for your purpose? Is this so? If I cannot write code today for a machine to do anything with the linked resource, maybe that's something that you'd want to say.  And you probably don't want to blindly load and use the load-this-executable-and-all-your-linking-problems-are-history media type, either :-)

The security considerations section does not mention that there might be cases where the lifetime information could be sensitive. Are there such cases? The only example of that I can come with is that a fixed data retention rule would obviously also reveal the time that the organisation in question has learned about the data in question, which might be sensitive in some cases.

Nits/editorial comments: 

The example section could perhaps demonstrate the use of the sunset relation in addition to the header field.