OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:3a:0a:8a:bb:76:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:e4:7d:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:12:27:dc:12:7c:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan23): addr:ca:03:aa:11:36:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan22): addr:96:4a:87:d7:87:0b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-2): addr:8a:b2:1c:4a:4f:69
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:e4:7d:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
