OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:b2:0f:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:4a:ca:ce:4e:0b:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:f2:6f:df:0c:88:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:f6:da:b7:0b:3f:82
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:b2:0f:c2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
