OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:47:41:7c:56:3b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:4e:eb:d6:f2:d4:68
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:a2:39:50:a4:a2:3a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7e:6b:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7e:6b:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
