OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ca:1e:ee:9a:14:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:f6:74:27:4e:c9:5f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:7e:91:9e:30:87:28
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:35:81:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:35:81:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
