OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:f6:89:32:60:5a:38
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:56:52:d1:a4:60:3c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:9e:d4:c7:f6:12:1e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7f:c8:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7f:c8:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
