WG last call - problem description document

[Scott Bradner]

even though some of Robert Snively's comments might have been good
to incorporate a while back I do not think we gain a lot from reopening
the document now - its time to say that the current version gets
the point across that there is work to do and is a reasonable
bases for thinking about that work - i.e., its close enough for
IETF standards work - ship it

Scott