OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:f7:bc:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:d2:83:24:cf:24:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:76:a0:18:ff:87:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:62:0f:77:af:c1:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:06:15:6e:dd:66:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f7:bc:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
