OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-ac4d0f-0): addr:1a:24:2c:4e:8e:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-de70ba-0): addr:52:ba:4f:06:f1:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-0000b4-0): addr:8a:85:13:d1:1a:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0e:ff:95:6c:76:c0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
