OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:8e:06:2d:ef:aa:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:5f:6f:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ea:f9:d7:35:4a:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:9a:58:84:56:97:76
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5f:6f:c5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
