OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6e:c0:d2:00:b5:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:f0:19:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:4a:0e:a6:44:bb:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:fe:93:8e:da:67:25
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f0:19:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
