OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-475838-0): addr:a2:aa:5f:34:e6:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-971456-0): addr:56:a5:0a:ef:67:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:de:08:9e:70:de:d3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
