OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-8fc2ef-0): addr:6e:bc:3c:8d:d7:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-62a6b9-0): addr:16:ea:fe:a1:2b:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 23(tap43918e05-fe): addr:fe:16:3e:fb:f3:2c
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 24(tapae2a126f-90): addr:b2:25:34:24:23:4c
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:c2:97:ab:0b:49:c6
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
