OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ba2b61-0): addr:4e:31:e5:c4:4b:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-0fb539-0): addr:c6:3b:f4:1e:00:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:c6:69:5e:1c:d5:ef
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
