OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:1a:88:8d:1e:66:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:e6:29:a2:12:68:bb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c2:7b:da:e3:22:5b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:1e:43:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:1e:43:b8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
