OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:9a:1e:f3:38:6a:31
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:9e:04:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:6a:6c:f4:1e:97:a7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:6e:5e:4c:6b:f6:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9e:04:ff
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
