OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-6ad29c-0): addr:32:21:64:83:90:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-5ddf55-0): addr:1a:00:f6:71:a2:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:68:e0:b4:6c:09
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
