add comment about reason for AddressPool
diff --git a/xos/configurations/cord/cord.yaml b/xos/configurations/cord/cord.yaml
index ec2cd6f..07d4b68 100644
--- a/xos/configurations/cord/cord.yaml
+++ b/xos/configurations/cord/cord.yaml
@@ -24,6 +24,7 @@
           view_url: /admin/cord/voltservice/$id$/
           kind: vOLT
 
+    # set a pool of addresses that we can hand out for the VSG Wan.
     public_addresses:
       type: tosca.nodes.AddressPool
       properties: