OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-31497d-0): addr:9e:f6:0e:1b:13:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ca:79:07:94:b7:ce
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
