OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e3793b-0): addr:1a:8b:3f:32:76:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-9747d3-0): addr:fa:26:1c:5f:7b:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-3d4ba4-0): addr:e6:51:e1:17:4a:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:f2:a8:0d:49:f8:29
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
