OFPST_PORT_DESC reply (xid=0x2):
 3(ovn-0df2c7-0): addr:2e:48:1c:af:62:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:e8:b2:3d:39:5b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
