OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1b31b2-0): addr:ae:91:ae:66:e0:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-127282-0): addr:96:dc:0b:0f:f9:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-61eba4-0): addr:52:61:8b:4a:00:32
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:82:b7:cd:50:5e:57
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
