OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4c5405-0): addr:2a:a7:9f:51:77:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b30a43-0): addr:76:3a:f7:72:ea:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e6:52:c1:7c:89:ac
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
