OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:ee:61:f2:10:6f:72
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:e2:69:ef:ca:57:41
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:5e:ad:d7:3b:d7:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:7a:5b:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:7a:5b:5d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
