OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0e:8f:d4:e0:14:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:32:0e:a0:75:74:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:96:f7:a1:a9:5b:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5a:bc:59
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5a:bc:59
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
