OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-6b99fc-0): addr:3a:2f:a1:bd:18:60
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-388e30-0): addr:ea:8a:f4:9f:7e:7a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-c6331d-0): addr:06:15:3e:cb:e9:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:d2:ff:4b:02:4a:a0
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
