OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f111a9-0): addr:8a:28:61:08:30:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-e99e68-0): addr:da:d1:4f:8d:22:a6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-f9db12-0): addr:8e:2f:b1:51:0d:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:16:03:06:bc:a3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
