OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-a80c44-0): addr:12:f8:4c:15:d7:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-44692d-0): addr:86:ae:4a:f5:ab:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:82:94:ae:6d:bd:e8
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
