OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-8c5daa-0): addr:4e:93:4a:2a:fd:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-2741cd-0): addr:3a:e7:57:d9:a2:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2e:94:ac:42:7a:bb
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
