OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-fe1377-0): addr:3a:e4:f3:93:c2:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:86:12:5f:98:e3:5f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
