@node Timeout
-@cindex Timeout
@subsection Timeout
Because of stateless UDP nature there is no way to reliably know if
If there were no packets at all during fourth part of timeout, then
special heartbeat packet is sent. So VPN connection should be alive all
-the time, even if there is no traffic in corresponding TAP interfaces.
+the time, even if there is no traffic in corresponding TUN/TAP interfaces.
@strong{Beware}: this consumes traffic.
Stale peers and handshake states are cleaned up every timeout period.