OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-20418b-0): addr:b6:06:73:1f:e4:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6e:a7:12:46:10:8c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
