OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:b2:04:1c:fa:7b:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:f6:f7:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:0a:96:7a:ac:96:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:4a:09:c3:dc:56:73
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f6:f7:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
