OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:21:fc:4d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ba:39:ab:60:b7:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:6e:ca:d6:c0:94:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:c6:ee:da:85:c3:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:21:fc:4d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
