diff --git a/lib/pfctl.js b/lib/pfctl.js
index <HASH>..<HASH> 100644
--- a/lib/pfctl.js
+++ b/lib/pfctl.js
@@ -15,7 +15,7 @@ module.exports = {
     await sudo('dnctl', 'pipe', 2, 'config', 'delay', '0ms', 'noerror');
 
     await shell(
-      'echo "dummynet in all pipe 1\ndummynet out all pipe 2" | sudo pfctl -f -'
+      'echo "dummynet in from any to ! 127.0.0.1 pipe 1\ndummynet out from ! 127.0.0.1 to any pipe 2" | sudo pfctl -f -'
     );
 
     if (down) {
Avoid slowing down localhost. (#<I>)