OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:f2:f2:ae:b7:6c:7f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6e:b2:0f:02:f3:b9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:2a:66:3b:11:db:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:70:fd:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:70:fd:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
