I was reading up on IPv6 and thought of this project when I read this:

http://datatracker.ietf.org/doc/rfc4941/

RFC4941 Privacy Extentions allows for nodes to randomly shift their IPv6 addresses in order to foil MAC and IP tracking.  I intuit that there are some positive implications for using IP addresses to sign hashes, especially in a KSI regime.

Scumby