OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:a0:e7:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:e6:c3:63:91:fe:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:0e:5b:57:b2:23:86
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:a2:18:85:8b:04:2b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a0:e7:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
