OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-d5d2bd-0): addr:66:98:04:c7:41:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-0b2a29-0): addr:be:46:76:6c:2e:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(tap16977ca1-4e): addr:fe:16:3e:11:ca:0c
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 4(tap118ad097-90): addr:9e:19:97:c6:9d:77
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:fe:7a:17:c3:bb:17
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
