OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1a:63:d1:81:31:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:3a:e0:89:74:13:4a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:2e:56:e8:44:7d:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:22:1c:ef:9f:d0:aa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:dd:09:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:dd:09:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
