OFPST_PORT_DESC reply (xid=0x2):
 1(ovn-35904f-0): addr:3e:61:e2:d5:3f:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(tapdb098052-66): addr:fe:16:3e:85:88:9d
     config:     0
     state:      0
     current:    10MB-FD COPPER
     speed: 10 Mbps now, 0 Mbps max
 3(tapb5760fda-90): addr:f6:f5:45:36:5b:44
     config:     0
     state:      0
     current:    10GB-FD COPPER
     speed: 10000 Mbps now, 0 Mbps max
 4(patch-br-int-to): addr:3a:35:f2:a0:73:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-int): addr:2a:4a:d8:f7:c5:f9
     config:     PORT_DOWN
     state:      LINK_DOWN
     speed: 0 Mbps now, 0 Mbps max
