OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-9a0c85-0): addr:a6:2d:94:d6:d7:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-968d9d-0): addr:b2:fc:c5:06:18:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-4d9738-0): addr:52:a3:bb:0f:fa:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8e:8f:07:78:97:25
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
