OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-5222e9-0): addr:b6:53:4a:b7:4b:28
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-829e75-0): addr:c2:10:0b:c5:69:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 25(tap0b6abd4d-4b): addr:fe:16:3e:c0:de:81
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:be:99:72:54:ff:79
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
