OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:1a:51:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:1a:62:f2:20:6d:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:de:c7:a1:b8:bb:03
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:4e:f2:cf:e9:8b:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:1a:51:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
