OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-b97b95-0): addr:b6:69:9a:e8:22:d7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b7e37f-0): addr:de:03:bd:89:fe:50
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-39821e-0): addr:e6:f7:3d:a0:04:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:62:d8:4e:c1:40:5d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
