OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-efcb63-0): addr:02:96:02:af:a2:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-1b0741-0): addr:0a:f1:e6:f4:2a:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-2f54a3-0): addr:42:49:f5:b3:8d:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:1e:80:47:61:1d:3f
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
