OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-a4fc69-0): addr:5a:ee:28:a1:6a:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0e:dc:c7:8e:0d:f3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
