OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-50d38f-0): addr:76:1c:47:25:52:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-e8a0f8-0): addr:9a:a8:a5:ef:e1:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-8f0d40-0): addr:96:ac:ed:46:28:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:e4:fc:f6:60:9d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
