OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:4a:ec:a4:58:85:2f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:0a:2f:a4:81:0b:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:f2:09:39:72:ab:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:0a:ab:37:12:e0:51
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:2a:7c:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:2a:7c:be
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
