OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:aa:29:32:1e:1e:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:16:25:97:cd:31:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:66:80:dc:4c:e1:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:b8:64:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b8:64:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
