OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:92:09:05:9f:3b:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:f9:06:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:2a:1b:85:a1:4e:7d
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:ca:06:cb:d4:cd:67
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f9:06:71
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
