Seems to me that what you are saying amounts to the statement that PI space cannot exist by definition. If there is address space that is routable on an Internet-wide basis it is by definition routable Internet space and no PI space. If someone needs such space they need to obtain an IP address space allocation and persuade their ISPs to route it. The question of whether this is possible is a policy issue, not a technical issue. Whatever the policy status (people disagree as to what the situation is) it is clearly not going to be solved by a technical hack that does not address the underlying political constraints. > -----Original Message----- > From: Fred Baker [mailto:fred@xxxxxxxxx] > Sent: Thursday, September 20, 2007 4:35 AM > To: IETF-Discussion > Subject: Re: ULA-C (Was: Re: IPv6 will never fly: ARIN > continues to kill it) > > > > owners of those services will simply go to ISPs and say > "route this, > > or I'll find someone else who will". > > I'm actually not as convinced of this. Yes, they can get > routing from their ISP, and the ISP will be happy to sell it > to them. Can they get it from their ISP's upstream, and from > that ISP's downstreams? To make it into PI space in the usual > sense of the word, I think they wind up writing a contract > with every ISP in the world that they care about. > > I think ULAs will exceed the bounds of a single > administration, but they will do so on the basis of bilateral > contract, not general routing. > > _______________________________________________ > Ietf mailing list > Ietf@xxxxxxxx > https://www1.ietf.org/mailman/listinfo/ietf > _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf