OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0a:d3:90:82:de:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:cf:ae:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:e2:9c:ad:e1:17:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:76:b4:42:f2:38:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:cf:ae:cf
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
