OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:d2:8f:20:81:06:13
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:0e:6d:ed:44:c6:79
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:be:92:fe:4f:4f:f5
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:f8:31:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f8:31:ad
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
