OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e5560c-0): addr:4e:74:0f:87:2d:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:46:41:8e:14:b5:0d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
