OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:12:8f:d3:9e:5a:12
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:81:df:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:62:5b:3e:34:13:74
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f6:d5:04:5e:a7:bd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:81:df:d4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
