OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-3b817c-0): addr:92:b8:44:1d:fa:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-7db753-0): addr:26:ca:aa:21:50:dc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-1c612d-0): addr:16:25:57:ec:8f:ac
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:82:2c:a2:e3:fb:cc
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
