OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-3ff68c-0): addr:66:d6:56:84:4b:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-ef6a8b-0): addr:5a:22:36:96:e4:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-c9f3d6-0): addr:ee:f9:53:d8:58:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4e:44:6c:fd:3c:69
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
