OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:0d:33:99
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan44): addr:b6:de:82:53:4f:33
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:96:1c:95:91:b0:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:b6:c7:f8:d7:46:f3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:6e:38:1a:88:52:96
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(vlan20): addr:4a:86:1e:7b:11:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:0d:33:99
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
