OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4b7fe4-0): addr:be:86:cf:9f:30:17
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-8c0c8e-0): addr:1e:af:05:71:cd:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4a:c3:b3:bb:66:96
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
