OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-923e28-0): addr:5a:76:0f:05:99:14
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-d7ffc8-0): addr:42:3a:21:25:f4:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:3e:20:85:c5:7c:af
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
