Despite the gargantuan effort, you wouldn't actually gain substantial privacy from such a move. True, a single packet wouldn't identify both parties, but an exc

Despite the gargantuan effort, you wouldn't actually gain substantial privacy from such a move. True, a single packet wouldn't identify both parties, but an exchange of packets in rapid succession, a TCP handshake or even an UDP stream would immediately leak the same information to any interested hop in the network. Furthermore, eavesdropping for metadata on the line is one of the lesser privacy concerns for most people. What really matters are privacy violations by the providers higher up the stack, where the address of both endpoints must be known to enable communication.