OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-71aaf7-0): addr:ca:bf:6d:36:21:7f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-7ec8bf-0): addr:b6:f2:9d:70:f1:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-bd097f-0): addr:7a:c4:3d:d7:e2:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:a2:48:ad:73:1f:fa
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
