OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-636270-0): addr:ba:3b:9d:18:cc:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-79129c-0): addr:2e:a0:b5:73:36:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-182957-0): addr:ea:1e:02:48:a5:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:a6:4e:66:5c:9f:4b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
