OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:66:86:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:1a:d4:9c:99:a7:a0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:82:c9:b1:3e:1c:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:92:2d:cc:2e:39:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:66:86:eb
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
