OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:82:29:c7:a4:48:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan21): addr:16:40:a6:c5:8d:e7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:1a:13:93:06:cf:b2
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:7d:55:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:7d:55:c6
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
