OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e228f7-0): addr:fa:62:ff:c4:cb:c3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-9485cd-0): addr:2a:62:ed:90:dd:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:0a:f8:cc:a1:8f:2a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
