OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:cc:b5:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:b2:92:9e:e3:e4:6c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ae:f5:64:f5:02:c9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f2:26:75:6e:e6:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:cc:b5:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
