OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-60a170-0): addr:3e:51:cf:77:8a:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-1f8076-0): addr:32:f9:d7:bc:e9:e1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:b2:53:22:4e:b9:02
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
