OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:8d:cb:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:f6:ae:aa:2c:cb:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:aa:af:0b:2f:61:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:82:d7:50:cf:fc:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:8d:cb:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
