OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-74da55-0): addr:de:dc:06:f8:31:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:3a:c4:2a:7f:ff
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
