master
trema_switch { datapath_id "0xabc" } vhost ("host1") { ip "192.168.0.1" mac "00:00:00:00:00:01" } vhost ("host2") { ip "192.168.0.2" mac "00:00:00:00:00:02" } link "0xabc", "host1" link "0xabc", "host2"