OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e130c2-0): addr:26:a2:b8:70:58:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-b36a49-0): addr:66:63:ea:a3:66:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-bdc194-0): addr:a6:b6:a0:4d:de:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:4e:7a:fd:38:14:c3
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
