OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e20d67-0): addr:5e:a9:81:19:29:de
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:12:d2:d4:4f:bb:a3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
