OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b30a43-0): addr:5a:07:1f:c6:20:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-79642d-0): addr:7e:42:af:b8:ad:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b6:ad:d3:57:25:cc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
