OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-2ca19c-0): addr:f2:b8:01:c3:7c:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-5b5e24-0): addr:4e:97:35:96:01:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:fe:64:3d:0e:4f:40
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
