> From: "Stephen Sprunk" <stephen@xxxxxxxxxx> > .. ULA-C/G leaks will not collide with each other. This means that, > unlike RFC1918 which is _impossible_ for ISPs to route for multiple > customers, ULA-C/G routes _can_ be routed publicly. Any prohibition > on doing so by the IETF or RIRs can (and IMHO, will) be overridden by > customers paying for those routes to be accepted. Which would argue that the only realistic way to make *absolutely certain* that IPv6 "private" addresses truly *cannot* be used out in the 'main' internetwork is to allocate the same ranges of addresses to multiple parties. Anything else is just PI with a few speedbumps, and a different label. Noel _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf