OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-5bdcc3-0): addr:b6:14:ed:fc:eb:8a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-116624-0): addr:96:00:81:28:5c:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-66e142-0): addr:ca:e9:b8:41:ca:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:ff:e1:cd:03:ea
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
