OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:92:d9:e4:9a:38:84
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:4a:9c:1d:77:c6:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:6a:d8:88:6f:eb:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f0:e9:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f0:e9:22
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
