OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-af15ea-0): addr:fe:9d:bf:bc:9f:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-856724-0): addr:aa:86:81:f5:42:64
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:06:0c:34:bd:bf:f9
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
