OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-17e7b0-0): addr:36:4a:b5:ef:ed:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-d14b9a-0): addr:22:44:51:9b:e9:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:23:73:e9:0a:2c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
