OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4a:7b:86:b1:37:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:02:31:71:e5:30:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ae:ba:ce:03:af:85
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:63:96:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:63:96:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
