OFPST_PORT_DESC reply (xid=0x2):
 1(vlan22): addr:26:7c:58:59:41:92
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 2(vlan20): addr:6e:90:a0:51:46:f7
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 3(vlan21): addr:1e:84:12:66:df:26
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 4(enp1s0): addr:52:54:00:d3:60:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
 LOCAL(br-ex): addr:52:54:00:d3:60:11
     config:     0
     state:      0
     speed: 0 Mbps now, 0 Mbps max
