OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:4e:81:19:a8:54:80
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(eth1): addr:fa:16:3e:f4:a4:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:ee:b6:85:b2:8f:83
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:e2:71:06:ff:7e:28
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:fa:16:3e:f4:a4:b4
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
