OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-55b2ec-0): addr:3e:ed:e1:d4:7f:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:5f:47:a0:0e:a3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
