OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-9ac139-0): addr:1a:df:f7:af:73:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b2:5e:a9:4a:ad:ef
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
