OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:3e:62:f1:55:b4:e0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:b2:b3:9f:6b:90:5e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:fe:82:f0:63:24:df
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:c7:0a:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:c7:0a:e4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
