OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:c2:49:0e:fd:d2:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:c2:a3:ca:81:52:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:9a:eb:2e:11:e8:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:77:ec:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:77:ec:bc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
