OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-755ad2-0): addr:a6:6c:de:1a:21:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-a37d86-0): addr:ae:91:d5:b2:1e:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-a63f2f-0): addr:32:ac:bf:ff:ac:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:7e:33:f1:3b:91:4b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
