OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d2:63:cf:da:f8:8f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:c1:73:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:2b:66:39:e9:49
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:5e:0d:82:ad:b0:84
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c1:73:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
