> FWIW, my current IPv6 assignment is PI to a degree (where P == my > first hop IPv4 provider), I can change this "first hop IPv4" provider > to any other provider within my country and still retain my IPv6 > assignment.
it sounds as if you have the mythical separation of locator and identifier :-)/2. the problem is that there is likely to be a shortage of those locators. one problem with 6to4 is that having all traffic go through gateways will not scale well. to support v6-only folk, either the number of 6to4 gateways will need to approach the number of dfz routers, the dfz routers will run 6to4, or some combination thereof. randy
