At 10:43 AM +0200 10/2/07, Iljitsch van Beijnum wrote:
When v4-only users get sick of going through a NAT-PT because it breaks a few things, that will be their motivation to get real IPv6 connectivity and turn the NAT-PT box off -- or switch it around so they can be a v6-only site internally.
Yeah right. Youtube is going to switch to IPv6 because I have trouble viewing their stuff through NAT-PT.
For you? now? Not likely. About the time that a very large number of new Internet sites are being connected via IP6 because there is little choice, that's a different story. Providers would be likely be telling customers to send their complaints to YouTube, and that everyone's in the same situation until Youtube gets a real connection. The proxy&tunnel vs NAT-PT differences of opinion are entirely based on deployment model... proxy has the same drawbacks as NAT-PT, only without the attention to ALG's that NAT-PT will receive, and tunnelling is still going to require NAT in the deployment mode once IPv4 addresses are readily available. For now, HTTPS proxy or a IPv4 tunnel over IPv6 works fine, but most folks don't really care about IPv6 deployment right now. They're looking for a model which works 3 years from now, when the need to deploy IPv6 is clear and present. At that point, there's high value in having a standard NAT-PT / ALGs approach for providing limited IPv4 backwards compatibility. /John