OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c2:85:bf:8e:1b:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:a5:6a:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:e2:c1:00:95:c7:36
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:76:8a:f5:c8:b9:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a5:6a:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
