OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-21ff71-0): addr:5e:71:3a:f9:54:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-f72d8d-0): addr:5a:31:a9:41:fb:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e6:90:5b:d4:44:5b
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
