OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-35cb0c-0): addr:66:a0:c7:7c:42:84
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-10eee4-0): addr:c2:4b:7f:76:40:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:8a:f9:d2:d8:78:d5
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
