To address the subject line: The only way to enforce unreachability is to make the prefix ambiguous, and thereby remove the value of trying to propagate it. Any definition of a globally unique space will have to discuss how it scales *when* (not if) it gets announced into the routing system.
Tony -------------------------------------------------------------------- IETF IPng Working Group Mailing List IPng Home Page: http://playground.sun.com/ipng FTP archive: ftp://playground.sun.com/pub/ipng Direct all administrative requests to [EMAIL PROTECTED] --------------------------------------------------------------------
