OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-479f96-0): addr:b6:ec:26:20:ec:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-755ad2-0): addr:b6:71:90:1d:87:f4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-a37d86-0): addr:2e:4a:60:cb:bc:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6a:7a:ce:18:a8:04
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
