OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-4a78d6-0): addr:ba:ad:ea:ad:35:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(ovn-4cfd6c-0): addr:56:ac:c6:f7:13:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 39(tap9892caa3-20): addr:fe:16:3e:3e:7b:6c
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:de:56:26:80:c3:a7
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
