OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4c0028-0): addr:a6:ad:73:e0:e5:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3a:b0:95:b4:13:df
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
