Ensure IP forwarding is enabled on required interfaces

manifests/system.pp

@@ -28,6 +28,19 @@ class analysator::system::nat {
     value  => '1',
   }
 
+  [
+    $analysator::system::internal_iface,
+    $analysator::system::public_iface,
+    $analysator::system::ib_iface,
+  ].each |$iface| {
+    ['4', '6'].each |$family| {
+      sysctl { "net.ipv${family}.conf.${iface}.forwarding":
+        ensure => present,
+        value  => '1',
+      }
+    }
+  }
+
   firewall { '200 forward internal':
     chain    => 'FORWARD',
     iniface  => $analysator::system::internal_iface,