OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ad0cdb-0): addr:3a:07:e2:6b:fa:45
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-2c2076-0): addr:a2:a7:d5:c2:b0:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-f116e4-0): addr:1e:89:88:03:2b:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5e:3b:06:20:e8:95
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
