OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-40f840-0): addr:b6:37:51:b0:45:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b6:ad:0c:8e:0b:6d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
