OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-0fb539-0): addr:ea:8d:2a:81:e2:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-31157b-0): addr:46:77:20:6a:01:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0a:15:ba:c9:25:40
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
