OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-a52aa1-0): addr:2a:11:58:be:94:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-3d1a9b-0): addr:a6:e0:29:ba:99:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:9e:57:2d:88:93:18
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
