OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-cc939b-0): addr:56:ec:f7:15:49:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-9a18d1-0): addr:ba:e1:28:46:15:1a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2e:1b:89:3e:f9:4e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
