OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-1b31b2-0): addr:9a:eb:aa:1f:55:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-d39b5b-0): addr:da:c1:aa:8c:f3:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-127282-0): addr:76:ed:cb:60:27:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d2:98:e6:ea:cf:21
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
