Add parameter for interfaces to ignore

README.markdown

@@ -190,6 +190,10 @@ Specifies whether to enable the iburst option for every NTP peer. Valid options:
 
 Specifies one or more network interfaces for NTP to listen on. Valid options: array. Default value: [ ]
 
+####`interfaces_ignore`
+
+Specifies one or more ignore pattern for the NTP listener configuration (e.g. all, wildcard, ipv6, ...). Valid options: array. Default value: [ ]
+
 ####`keys_controlkey`
 
 Provides a control key to be used by NTP. Valid options: string. Default value: ' '

manifests/init.pp

@@ -29,6 +29,7 @@
   $preferred_servers = $ntp::params::preferred_servers,
   $restrict          = $ntp::params::restrict,
   $interfaces        = $ntp::params::interfaces,
+  $interfaces_ignore = $ntp::params::interfaces_ignore,
   $servers           = $ntp::params::servers,
   $service_enable    = $ntp::params::service_enable,
   $service_ensure    = $ntp::params::service_ensure,

manifests/params.pp

@@ -21,6 +21,7 @@
   $udlc              = false
   $udlc_stratum      = '10'
   $interfaces        = []
+  $interfaces_ignore = []
   $disable_auth      = false
   $disable_kernel    = false
   $disable_monitor   = true

spec/classes/ntp_spec.rb

@@ -126,6 +126,29 @@
           end
         end
 
+        describe 'specified ignore interfaces' do
+          context "when set" do
+            let(:params) {{
+              :interfaces => ['a.b.c.d'],
+              :interfaces_ignore => ['wildcard', 'ipv6']
+            }}
+
+            it { should contain_file('/etc/ntp.conf').with({
+              'content' => /interface ignore wildcard\ninterface ignore ipv6\ninterface listen a.b.c.d/})
+            }
+          end
+          context "when not set" do
+            let(:params) {{
+              :interfaces   => ['127.0.0.1'],
+              :servers      => ['a', 'b', 'c', 'd'],
+            }}
+
+            it { should contain_file('/etc/ntp.conf').with({
+              'content' => /interface ignore wildcard\ninterface listen 127.0.0.1/})
+            }
+          end
+        end
+
         describe 'with parameter disable_auth' do
           context 'when set to true' do
             let(:params) {{

templates/ntp.conf.erb

@@ -27,9 +27,15 @@ restrict <%= restrict %>
 <% end -%>
 
 <% if @interfaces != [] -%>
+<% if @interfaces_ignore != [] -%>
+<% @interfaces_ignore.flatten.each do |interface| -%>
+interface ignore <%= interface %>
+<% end -%>
+<% else -%>
 # Ignore wildcard interface and only listen on the following specified
 # interfaces
 interface ignore wildcard
+<% end -%>
 <% @interfaces.flatten.each do |interface| -%>
 interface listen <%= interface %>
 <% end -%>