OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:5e:1c:7b:4f:7a:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:b2:a0:f0:e2:87:0e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:be:74:0c:7f:e6:4e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:05:9a:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:05:9a:e5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
