OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-9a9538-0): addr:be:42:59:ab:7a:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8e:2b:94:e5:3e:e4
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
