OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-77a6cd-0): addr:f2:c5:4b:77:29:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2e:7e:a4:23:ff:cb
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
