OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-207911-0): addr:3a:3e:8b:dc:3d:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(patch-br-int-to): addr:0a:80:4a:e2:8d:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:ea:ae:c3:3e:e4:87
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
