OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-6123f9-0): addr:a6:f5:9f:f2:b0:25
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:0d:5e:64:1d:68
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
