OFPST_PORT_DESC reply (xid=0x2):
 1(enp1s0): addr:52:54:00:36:46:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan22): addr:ee:f5:83:d2:14:09
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:16:46:83:ca:e5:66
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(vlan20): addr:c6:d3:86:fe:4a:b7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:36:46:24
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
