OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:32:ee:77:3c:27:ba
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:62:ff:f4:eb:b5:6d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:02:dd:1a:22:62:2d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:92:a7:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:92:a7:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
