added a comment for datapath_id section

lib/puppet/provider/vs_port/ovs_redhat.rb

@@ -93,13 +93,13 @@ Puppet::Type.type(:vs_port).provide(:ovs_redhat) do
       raise RuntimeError, 'Undefined boot protocol'
     end
  
+    # The idea here to have a fixed MAC address
     datapath_id = vsctl("get", "bridge", @resource[:bridge], 'datapath_id')
     bridge_mac_address = datapath_id[-14..-3].scan(/.{1,2}/).join(':') if datapath_id
  
     if bridge_mac_address
       bridge_file << "OVS_EXTRA=\"set bridge #{@resource[:bridge]} other-config:hwaddr=#{bridge_mac_address}\"\n"
     end
-
     bridge_file.close
   end
 end