OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:be:42:73:53:04:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:8e:ef:87:6b:a9:27
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5e:45:41:c7:2f:89
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f4:66:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f4:66:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
