diff --git a/manifests/chains.pp b/manifests/chains.pp
index ff81dcdc7a1f32236687ccf901c1c5692b8fbe48..9af380153ce0e3565b97b109eb0dd88ea598a00d 100644
--- a/manifests/chains.pp
+++ b/manifests/chains.pp
@@ -18,6 +18,10 @@ class fw_builder::chains (
 
   assert_private()
 
+  $test = $fw_builder::ip_proto_array
+
+  echo { "test ${test}":; }
+
   $fw_builder::ip_proto_array.each | String $provider | {
     $trusted_net = $provider ? {
       'iptables' => 'trusted_networks_v4',