OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-25988f-0): addr:26:3a:08:f3:63:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-fcc1b7-0): addr:9a:df:79:94:9e:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ba:4b:d2:e7:8b:a1
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
