OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:de:bf:93:00:81:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:44:67:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0a:f3:b2:b9:91:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:62:b9:f4:59:b4:c8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:44:67:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
