OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3a:63:9e:7d:c6:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:f6:19:f6:4d:51:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:e2:f9:e7:f6:33:af
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:5e:f7:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:5e:f7:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
