OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4e:84:44:de:71:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:56:41:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9a:a3:05:65:bb:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:4e:36:87:37:39:66
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:fe:90:ff:c3:29:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:56:41:90
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
