diff --git a/libvirt/manifests/init.pp b/libvirt/manifests/init.pp
index 0cfbf88..348efda 100644
--- a/libvirt/manifests/init.pp
+++ b/libvirt/manifests/init.pp
@@ -117,7 +117,7 @@ class libvirt::kvm inherits libvirt::client {
         notify  => Service["libvirtd"],
     }
 
-    if defined(Service["iptables"]) {
+    if $::interfaces =~ /virbr[0-9]/ and defined(Service["iptables"]) {
         $iptables = Service["iptables"]
     } else {
         $iptables = undef