OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:be:4c:eb:3d:37:8a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ae:bd:bd:62:ee:dd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:aa:95:20:14:b4:a1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c2:ca:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c2:ca:c1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
