OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-5222e9-0): addr:9e:21:b4:12:1e:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-84f87f-0): addr:76:0d:64:9d:31:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e2:82:3a:7c:92:2e
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
