Last Call Review of draft-ietf-softwire-stateless-4v6-motivation-
review-ietf-softwire-stateless-4v6-motivation-secdir-lc-hallam-baker-2012-10-25-00

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.

The draft is a discussion of the reasons why a stateless solution to mapping
IPv4 addresses to IPv6 is desirable. As such the security considerations are
probably best dealt with in the manner that the document addresses them,
pointing out that a stateless approach has the advantage of not having state.

While the draft might have been a little easier to follow if it was a little
more concrete, for example how is the statelessness to be achieved and what are
the costs of this approach (which must presumably exist or else why use a
statefull mapping), this will have to be addressed in any implementation draft.

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