OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:a6:84:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:8e:1f:33:73:65:66
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a2:70:a4:86:ae:8b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:4a:35:a7:07:23:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a6:84:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
