OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-735612-0): addr:7a:68:ef:b0:88:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-050cad-0): addr:6a:95:e1:a7:0e:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b6:93:02:0d:8c:fd
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
