OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-056888-0): addr:72:0d:cf:cb:40:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-25551c-0): addr:d6:e3:a2:b8:b8:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-90b7dc-0): addr:5e:7f:16:da:a0:01
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:42:35:74:86:ac:d0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
