OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0e:12:44:27:c5:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:4a:9a:9f:73:fc:62
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:1a:ae:eb:06:37:54
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c2:c0:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c2:c0:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
