> > they would switch if they had alternatives available. but people > > like you keep claiming that alternatives aren't needed because the > > market has spoken. > > Nonsense. I'd love to see an alternative. Obviously, NATS have costs > and a solution that reduced those costs would be better. What > alternative, exactly, are you offering? 6to4 is one. and before Christian wrote his shipworm/teredo proposal I had my own proposal to tunnel v6 over v4+NAT. there's also my draft describing my best effort to produce a mechanism that would allow v4 apps to tolerate NATs and still have general connectivity. (I tried, but it turns out that it's far easier to support 6to4 and/or teredo) so it's not like I haven't actually been working on solving the problem. Keith