>> And if the addresses used at the host are unique, it gets rid of many >> of the problems caused by overlapping use of RFC 1918 addresses in IPv4. >> There's still some issues related to traceability of traffic over the >> network, but maybe those are manageable. >> > > The source and destination address are globally unique. As such you know > where the traffic comes from as all these prefixes are correctly > registered in whois. This means that an end-site organization might have > 5 /48's in whois: one they use for "ID", this can be a special block > like ULA, PI or just a block they get from one of their upstream ISPs, > and maybe 4 from their upstream ISPs. I am fairly convinced, however, that the more address prefixes a site has above some small number, the slower and less reliable applications will be. Keith _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf