OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-177722-0): addr:c6:98:19:4b:44:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-52480a-0): addr:36:43:fd:26:1b:4b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:40:89:95:05:2a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
