OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:b2:77:56:a9:f4:4d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:6a:2f:70:7f:a4:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:3a:b3:f9:a9:a8:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:3a:a8:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:3a:a8:ae
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
