OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-88a841-0): addr:9a:63:b4:a3:1b:fb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-dca786-0): addr:ea:3b:ce:d4:11:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:7e:8d:dc:57:c4:86
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
