OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:66:d0:29:4e:6e:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:72:e0:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:aa:90:9a:6a:ca:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:8e:8d:ef:20:03:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:72:e0:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
