OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:52:67:ca:34:23:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:3a:23:f5:bd:6a:3f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:7a:c2:e9:4c:23:e3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:97:07:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:97:07:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
