OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ad:b1:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:c6:3e:a5:88:f7:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ba:d8:91:c8:21:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:02:d5:8b:df:8c:3e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ad:b1:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
