OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-672825-0): addr:7a:b0:7c:93:a3:aa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-e4c887-0): addr:7e:c1:4a:15:6d:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-900289-0): addr:e6:f3:59:71:b6:da
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e2:97:0e:98:fb:a1
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
