OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:ff:48:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ae:36:0a:19:2b:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:6a:05:04:2b:c9:81
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:82:7f:f3:50:b3:94
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ff:48:ca
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
