OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:4e:c7:0d:5a:d4:b3
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:71:2c:dd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:4e:6d:1a:ea:cc:9c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:da:68:7b:b3:3c:a5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan20): addr:7e:18:ae:9f:b9:07
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-4): addr:0e:4e:5c:54:c0:f8
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:71:2c:dd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
