OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ae:db:8a:8c:23:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:06:ed:96:d4:59:a3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5a:1e:05:5d:ee:2e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c9:b3:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c9:b3:15
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
