OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:c6:16:b4:43:1b:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:ee:d9:14:f9:87:0d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:fa:29:90:f9:53:ef
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:9e:d1:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:9e:d1:fe
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
