OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:ba:95:70:98:05:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:3e:55:b9:90:c7:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:76:53:af:b5:45:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ca:1e:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:7e:81:4d:2a:fd:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ca:1e:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
