OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:e2:01:57:c9:3e:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:78:8d:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:06:f9:48:44:9f:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:4a:2f:4e:55:96:f0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:78:8d:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
