I don't know a lot about RetroShare but from what little I know I think they actually had the right approach. It was real peer-to-peer. I'm not thinking about

I don't know a lot about RetroShare but from what little I know I think they actually had the right approach. It was real peer-to-peer. I'm not thinking about peer-to-peer from an anonymous file sharing perspective. I'm thinking in much broader terms. But I know anonymous file sharing is what many projects have focused on. You are right that many puported "peer-to-peer" solutions are not true p2p. Look hard and you'll usually find a middleman somewhere in the scheme. Of course as we all know many users are not really interested in how something works, just so long as it works. How many people really look hard at the scheme being used? As for IPv6, I think it brings a lot of complexity. And where there is complexity, there will be problems. Working with IPv4 is complex enough as it is. I like IPv4 because it's more widely found. Not everyone will have access to IPv6.