OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:0e:0b:43:68:e4:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:a6:80:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:1e:45:a1:c9:74:fd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:0e:31:8b:a3:9f:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a6:80:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
