OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9a:f2:18:c0:61:92
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:e7:27:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:56:eb:0a:3c:97:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:3a:0f:87:6d:0d:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e7:27:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
