OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:5a:f2:33:77:87:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:32:96:ac:28:43:78
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:1a:3c:26:4e:82:f6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:61:b8:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:61:b8:b0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
