OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-7fdb26-0): addr:d6:9f:3a:53:57:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-80be8f-0): addr:ca:30:b6:77:ff:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:48:9f:c7:ac:1a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
