OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:02:4c:c6:b1:62:28
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:e2:6e:01:c4:95:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b2:4f:e5:aa:26:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:cb:e4:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:cb:e4:ec
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
