OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-3f87bd-0): addr:36:60:8a:2d:93:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-c177f9-0): addr:96:cd:7b:88:70:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-5e86ca-0): addr:56:3c:e2:82:a2:42
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:be:a9:8b:cb:e0:ea
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
