OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:06:d7:62:a3:ae:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:f2:2e:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:d2:db:5d:a7:73:52
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:ea:90:27:52:28:21
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f2:2e:75
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
