OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:8e:a8:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:56:40:76:71:81:fa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:0e:4c:2a:29:b4:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:82:c6:43:0c:50:8a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:0a:81:cf:45:31:ce
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8e:a8:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
