OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b663ec-0): addr:c6:5a:09:c7:2e:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-93735e-0): addr:c6:5d:45:7e:38:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-19d5c6-0): addr:c2:a6:d5:9a:06:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:42:3b:ba:fc:89:b3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
