OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-74944c-0): addr:8a:cc:57:82:2a:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-0ae5d3-0): addr:76:2d:ea:8c:37:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-5078af-0): addr:12:69:7f:f4:7e:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e6:60:02:9a:8b:f6
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
