OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:42:4c:49:17:b4:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:c3:b2:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:2a:c5:d6:e0:66:0e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:aa:b2:05:5d:59:9d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c3:b2:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
