OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:56:5e:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:2e:b9:4e:18:75:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ee:19:6b:4e:89:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:26:b2:f5:0b:83:44
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:56:5e:ea
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
