OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1b9f6f-0): addr:ea:17:5c:43:19:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-68c9df-0): addr:56:e0:c9:67:57:bb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:ae:aa:08:37:1a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
