OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:f6:02:40:8a:65:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:0d:d9:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:aa:c3:57:2b:20:f7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:ba:ee:90:31:37:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0d:d9:20
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
