OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-0be0c9-0): addr:82:1d:ac:af:6f:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-09f261-0): addr:ae:f4:e7:0e:56:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1a:51:ab:2b:3f:2a
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
