OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4e:9b:b8:5e:a9:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:a2:ac:23:fb:70:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d6:7d:4b:e9:f5:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c5:c8:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c5:c8:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
