Quaizar, Your tunnel endpoint can contain a "default" (actually 5f00::/8) route pointing at NRL, a static route for DEC, a static route for Bay, and any routes needed with UNH. That is entirely sufficient to work properly with the 6bone and seems entirely managable by hand. So I don't see the need for any changes to the 1897 specification. Ran rja@cisco.com --