OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-004049-0): addr:2e:ce:6d:0c:ba:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-c578fa-0): addr:4a:07:dc:7a:71:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:12:cd:5e:01:cd:ec
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
