OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:a4:ec:5e:06:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:da:3e:ef:06:20:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:76:13:f0:26:4d:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:14:64:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:14:64:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
