OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-f915eb-0): addr:2a:85:9e:46:95:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-aec690-0): addr:46:94:3d:0b:3d:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:6a:55:8f:79:f8:a3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
