OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:96:a1:6a:09:0d:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:c6:a3:d2:ea:58:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:66:84:a7:8a:02:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:6a:0a:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6a:0a:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
