OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-a1eb49-0): addr:ba:dd:7a:3c:9e:25
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:56:57:35:d9:b8:59
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
