OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:92:1b:83:02:92:6b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:2a:31:b4:70:ae:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:62:2d:e6:5a:1b:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:6b:e4:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:6b:e4:39
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
