OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:16:e7:6e:fd:6a:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:5a:a2:7d:e8:54:d3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:7a:f2:2e:21:58:c7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:ac:b4:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:ac:b4:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
