OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-636270-0): addr:7a:10:90:9d:57:a9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-79129c-0): addr:3e:82:2f:80:29:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-e4587b-0): addr:06:f4:d6:2b:0d:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:c4:96:e0:0a:71
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
