OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:22:8a:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:c2:17:b8:58:35:1b
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan20): addr:be:9b:92:17:84:04
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan21): addr:2a:84:e0:87:b2:e9
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:22:8a:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
