> From: Brian E Carpenter <brc@xxxxxxxxxxxxxx> > You might explain that to the people who say they need IPv6. OK, I'll bite. Let's assume what many people now seem to concede, which is that a large part of the Internet is going to continue to be IPv4-only. So, what's the functional difference between: - A host which has an IPv6 only address, which it cannot use (without "borrowing" a global IPv4 address) to comunicate directly with IPv4-only hosts out on the global Internet. - A host which has an IPv4 local-only address, which it cannot use (without "borrowing" a global IPv4 address) to comunicate directly with other IPv4 hosts out on the global Internet. Noel _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf