I meant "GV" not TV. The NAT case only applies when both the clients are behind NAT, otherwise you do not need a relay node. Also there seems to be a way to av

I meant "GV" not TV. The NAT case only applies when both the clients are behind NAT, otherwise you do not need a relay node. Also there seems to be a way to avoid a relay even if both are behind a NAT. Read the paper, "Autonomous NAT Traversal", joint work with Christian Grothoff, Nathan S. Evans, and Andreas Müller published by IEEE at the IEEE P2P'10 Conference (bib, pdf) http://samy.pl/pwnat/ http://samy.pl/pwnat/