OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-740e9e-0): addr:0a:35:7a:a9:26:7e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-200cb7-0): addr:d2:a2:63:1b:ed:1c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:32:b5:e2:4d:b1:ca
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
