OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-33f82a-0): addr:5a:38:80:4c:3d:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ca:93:44:35:d4:8a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
