OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:72:0e:f3:1b:af:91
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:9e:31:3b:86:d4:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9a:9a:0d:62:53:99
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:51:29:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:51:29:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
