OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:e6:90:fe:dc:a8:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:8a:06:f4:e3:7d:0a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:56:2a:91:f0:2d:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:a8:a1:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:0e:e4:61:fd:0d:fa
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a8:a1:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
