OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-636270-0): addr:6a:85:71:96:e7:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-182957-0): addr:52:d9:c5:a1:c7:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-e4587b-0): addr:22:99:fe:c4:4c:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:04:b7:95:3b:75
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
