OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:fa:b1:70:1d:86:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:5e:f9:fc:5a:b0:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d6:b6:7b:b5:73:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:57:a7:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:57:a7:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
