OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3a:16:e7:8c:56:7a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:b2:4c:7f:2d:5d:61
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:c2:ec:70:d8:79:d6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:11:13:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:11:13:ed
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
