Add support for Chain6 directive

examples/plugins/iptables.pp

@@ -1,8 +1,12 @@
 include ::collectd
 
 class { '::collectd::plugin::iptables':
-  chains => {
+  chains  => {
     'nat'    => 'In_SSH',
     'filter' => 'HTTP',
   },
+  chains6 => {
+    'nat'    => 'In6_SSH',
+    'filter' => 'HTTP6',
+  },
 }

manifests/plugin/iptables.pp

@@ -4,6 +4,7 @@
   $ensure_package = 'present',
   $manage_package = undef,
   $chains         = {},
+  $chains6        = {},
   $interval       = undef,
 ) {
 
@@ -12,6 +13,7 @@
   $_manage_package = pick($manage_package, $::collectd::manage_package)
 
   validate_hash($chains)
+  validate_hash($chains6)
 
   if $::osfamily == 'RedHat' {
     if $_manage_package {

spec/classes/collectd_plugin_iptables_spec.rb

@@ -26,6 +26,20 @@
         end
       end
 
+      context ':ensure => present and :chains6 => { \'nat\' => \'In6_SSH\' }' do
+        let :params do
+          { chains6: { 'nat' => 'In6_SSH' } }
+        end
+
+        it "Will create #{options[:plugin_conf_dir]}/10-iptables.conf" do
+          is_expected.to contain_file('iptables.load').with(
+            ensure: 'present',
+            path: "#{options[:plugin_conf_dir]}/10-iptables.conf",
+            content: %r{Chain6 nat In6_SSH}
+          )
+        end
+      end
+
       context ':ensure => present and :chains has two chains from the same table' do
         let :params do
           { chains: {

templates/plugin/iptables.conf.erb

@@ -1,9 +1,16 @@
-<% if @chains -%>
 <Plugin iptables>
+<% if @chains -%>
 <%   @chains.each_pair do |table,chains|
        Array(chains).each do |chain| -%>
   Chain <%= table %> <%= chain %>
 <%     end -%>
 <%   end -%>
-</Plugin>
 <% end -%>
+<% if @chains6 -%>
+<%   @chains6.each_pair do |table6,chains6|
+       Array(chains6).each do |chain6| -%>
+  Chain6 <%= table6 %> <%= chain6 %>
+<%     end -%>
+<%   end -%>
+<% end -%>
+</Plugin>