OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:f8:9d:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:42:8b:9e:b4:99:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:fe:b8:f3:26:69:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:b6:f4:19:3c:30:1a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f8:9d:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
