OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-fd066f-0): addr:9a:59:89:a1:44:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b2c267-0): addr:22:e9:76:9c:eb:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4e:dd:b1:0a:c0:fd
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
