OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:90:b7:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ee:01:6d:08:18:0c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:4e:9e:8a:ba:c9:08
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:8a:5e:a6:c5:58:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:90:b7:58
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
