OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-bd30a8-0): addr:96:d5:d8:5a:c3:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-7525db-0): addr:32:5b:75:c2:99:98
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-a43628-0): addr:5a:d2:41:5f:3f:bb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4a:85:6d:d1:cb:20
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
