OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:56:b3:0b:8a:89:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:12:1c:5f:63:06:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:6e:67:19:10:54:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:10:6d:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:10:6d:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
