OFPST_PORT_DESC reply (xid=0x2):
 1(eth1): addr:fa:16:3e:eb:3e:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:c2:e6:58:b0:3b:9a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:b2:a6:7e:39:4f:d5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:e6:c5:fd:98:78:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:eb:3e:5a
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
