OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:aa:63:d8:bc:45:b5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:96:12:74:c6:b6:7c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:0e:68:72:cc:fa:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:50:d1:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:50:d1:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
