OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:6a:b1:7f:a3:6e:ab
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:56:a3:ee:03:05:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:ea:67:5c:44:03:1d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:d6:02:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d6:02:16
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
