OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:7c:66:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:46:93:f9:48:d5:4e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:aa:77:85:a4:d6:4c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:8a:9f:b1:ff:d1:c4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7c:66:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
