OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:ee:5a:91:97:21:8e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:3e:c9:c0:1e:31:23
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:b6:87:57:f2:5d:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:d8:78:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d8:78:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
