OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-64388b-0): addr:fe:87:60:67:72:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-31a980-0): addr:1a:c7:62:ee:1a:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ce:2f:3a:a9:2c:cc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
