Networking #2: Reliable Peering over 6bed4
For client-server networking, NAT traversal is a solved problem. For peer-to-peer networks it is not possible to do in general, but the potential of these networks in the liberation of users from "central" services is quite big. The 6bed4 tunnel allows applications to be designed as peer-to-peer IPv6 applications with only a fallback (to your own tunnel server) if necessary.
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