OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:11:f4:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan23): addr:3e:88:16:04:2f:19
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:7a:81:dd:0e:2f:4d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan44): addr:42:f7:f2:95:52:87
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 5(vlan21): addr:36:ae:a1:3d:a6:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 6(vlan20): addr:76:31:9b:68:66:c0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:11:f4:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
