OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-02c401-0): addr:9a:56:1c:51:fc:34
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-aa8820-0): addr:3a:a4:19:15:74:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6e:3c:37:a8:d3:ad
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
