OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:cb:9f:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:c6:44:a8:45:b7:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ee:cc:f6:19:f9:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:52:df:97:3a:83:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:cb:9f:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
