OFPST_PORT_DESC reply (xid=0x2):
 1(vlan21): addr:aa:1d:a8:34:a5:8c
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:06:ad:5c:96:06:a4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan23): addr:92:62:a9:8c:73:4e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan22): addr:76:15:49:27:d5:48
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(eth1): addr:fa:16:3e:f7:0c:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(patch-provnet-d): addr:e6:a1:c6:b7:7b:53
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ctlplane): addr:fa:16:3e:f7:0c:fc
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
