OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ae:8e:60:13:24:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:1e:5e:4a:69:84:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:16:d9:09:09:b1:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:98:9d:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:98:9d:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
