OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4e2779-0): addr:2e:30:c0:60:af:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:7a:79:de:76:80:95
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
