OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-c3c374-0): addr:2e:11:0f:18:5b:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-123e3b-0): addr:52:78:58:d8:d9:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6e:49:b2:d4:c3:73
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
