OFPST_PORT_DESC reply (xid=0x2):
 3(ovn-9b6e87-0): addr:b6:aa:d4:36:b6:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:df:d8:cb:00:f7
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
