OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-056888-0): addr:42:02:51:70:ed:43
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-dde279-0): addr:b2:46:cc:e8:5f:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-25551c-0): addr:fe:49:22:76:70:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:fa:cb:27:c1:16:6d
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
