Auto-connect to other cjdns nodes on the same network. Options: 0: Disabled. 1: Accept beacons, this will cause cjdns to accept incoming beacon messages and try connecting to the sender. 2: Accept and send beacons, this will cause cjdns to broadcast messages on the local network which contain a randomly generated per-session password, other nodes which have this set to 1 or 2 will hear the beacon messages and connect automatically.
option