OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-a442ee-0): addr:e6:2b:b1:dc:63:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-7c8aef-0): addr:e2:43:14:a5:96:bf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-9dbd48-0): addr:0a:c0:2a:fd:3d:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:9a:ea:4b:ed:35:d0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
