OFPST_PORT_DESC reply (xid=0x2):
 1(vlan20): addr:8a:81:62:59:d5:65
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7e:52:3f:54:17:d9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan22): addr:b2:59:b4:98:5f:d0
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:d1:68:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:d1:68:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
