OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e972f2-0): addr:82:9a:c0:6b:e9:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b2fe70-0): addr:16:32:f1:fc:8e:56
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:aa:f5:04:86:d1:e7
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
