OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-923e28-0): addr:d6:cf:57:f3:c2:1a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-f6752f-0): addr:1a:76:10:f2:13:46
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:92:bb:f3:30:12:d2
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
