OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-70f20a-0): addr:ee:6a:07:b8:23:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-08516f-0): addr:1e:1e:38:a7:22:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e6:a6:20:7b:39:52
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
