OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:22:27:4a:a7:96:97
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:30:82:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:8a:28:39:4a:42:37
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:12:97:6f:84:44:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:30:82:55
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
