OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:d2:71:7e:06:62:9b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:d2:90:34:f9:ae:9e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:16:5f:8a:c4:96:dd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:4a:c6:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:4a:c6:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
