OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:fd:d2:5c:ed:43
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6e:b4:5a:e2:48:05
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b6:c3:a9:ed:ab:88
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:47:b2:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:47:b2:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
