OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0a:10:75:c3:3d:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:66:0b:69:e7:e5:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:26:19:11:0a:1e:00
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f1:00:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f1:00:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
