OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e0256f-0): addr:a6:87:6d:da:8b:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-cac152-0): addr:2e:6c:5f:a3:02:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:be:ff:1e:2e:69:ce
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
