http://docs.openvswitch.org/en/latest/tutorials/faucet/ http://costiser.ro/2017/03/07/sdn-lesson-2-introducing-faucet-as-an-openflow-controller/ https://inside-openflow.com/openflow-tracks/faucet-controller-application-technical-track/
https://www.youtube.com/watch?v=fuqzzjmcwlI