OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b4a8f4-0): addr:da:8e:c3:3e:b7:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-356046-0): addr:6a:40:13:7e:c5:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-f2104f-0): addr:3a:16:e9:2d:0d:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:a6:d8:9b:1f:a2:16
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
