OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4a:ea:17:0b:55:cd
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:47:a1:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ea:6c:70:f9:b0:10
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:82:31:6e:59:2d:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:47:a1:b1
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
