OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:0e:1a:bb:1d:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:de:70:ff:56:f0:7b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:d2:05:f6:4f:cd:47
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:d2:a5:4b:0e:97:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:8e:f8:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8e:f8:70
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
