OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1b7e83-0): addr:ae:99:72:f7:0c:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-af15ea-0): addr:96:8f:60:8d:1e:1a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b2:3f:d6:ce:20:5f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
