-@item TCPonly = <yes|no> (no, experimental)
-@cindex TCPonly
-If this variable is set to yes, then the packets are tunnelled over a TCP
-connection instead of a UDP connection. This is especially useful for those
-who want to run a tinc daemon from behind a masquerading firewall, or if
-UDP packet routing is disabled somehow. This is experimental code,
-try this at your own risk.