OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:a2:80:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:16:92:6e:d0:6b:02
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:8e:8d:b5:35:e6:ee
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:82:1a:25:35:e5:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:a2:80:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
