OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:e4:3b:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ca:af:aa:89:02:6a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:06:b2:f2:46:62:8d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:b2:10:a8:86:3f:e8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:e4:3b:d2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
