OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-e130c2-0): addr:22:26:22:aa:33:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-bdc194-0): addr:d2:ae:59:bb:b1:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(ovn-67ef43-0): addr:2a:f6:4c:97:2e:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:e2:20:c0:5f:ef:8c
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
