OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-c4f66e-0): addr:d6:75:c4:98:8b:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:42:ad:1f:ad:39:e2
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
