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

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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.