OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-6c8f18-0): addr:d2:11:06:ec:0e:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:5a:9f:b2:c9:97:fc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
