OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:2e:74:b0:46:31:63
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:7a:a7:92:e4:ee:db
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:62:c4:3e:5d:62:6e
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(eth1): addr:fa:16:3e:83:47:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:83:47:e2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
