OFPST_PORT_DESC reply (xid=0x2):
 2(ovn-37efe9-0): addr:62:07:9e:27:bb:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:52:fa:7b:de:c8:f3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
