OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:16:1e:3f:d8:8a:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:b6:47:44:eb:fc:b6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(eth1): addr:fa:16:3e:0b:d2:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:fa:c5:04:c7:4a:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan23): addr:8e:03:39:76:3e:77
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-6): addr:e6:e1:90:81:11:a9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:0b:d2:2a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
