OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-92808e-0): addr:a6:02:98:4d:23:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-7ef80d-0): addr:d2:a8:4a:06:59:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:f2:ef:56:7d:66:0b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
