OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-056888-0): addr:6e:dd:6b:14:2d:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-dde279-0): addr:b2:a3:1b:01:a5:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-90b7dc-0): addr:6a:48:7d:14:b3:ac
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:66:ba:b8:ae:3d:d5
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
