OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:b9:d7:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:02:58:bc:11:ac:57
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:92:43:5d:16:40:cb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:2a:97:a1:18:1e:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b9:d7:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
