OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ad4c1d-0): addr:f6:4e:90:54:12:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-d84819-0): addr:6e:9b:8a:a6:7f:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0a:a5:2c:ac:cc:d0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
