OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:28:f1:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:b2:53:05:3a:f3:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:52:5d:cf:f7:95:f9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:2e:d1:e8:c9:ee:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:28:f1:0f
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
