[LAU] pyliblo: valid address to send OSC?

Hi! I am trying to send OSC messages to ardour by means of send_osc, included in debian/ubuntu package pyliblo-tools (http://das.nasophon.de/pyliblo/) . I always get the message "liblo.AddressError: address error: invalid URL" unless I am in the same computer that runs ardour and just enter the UDP port number that ardour uses to receive OSC messages. For example, this works: send_osc 3819 /ardour/access_action Common/About However, from my other computer in the same network, this: send_osc 192.168.0.192:3819 /ardour/access_action Common/About results in: liblo.AddressError: address error: invalid URL '192.168.0.192:3819' I have tried other options to no avail and the man page and pyliblo examples didn't help me. What is the right syntax in pyliblo outside the localhost for a given UDP port? Thanks in advance, Pablo