diff --git a/doc/demo.sh b/doc/demo.sh
index 06a80b1..5a29705 100755
--- a/doc/demo.sh
+++ b/doc/demo.sh
@@ -122,4 +122,4 @@ echo
 echo "Starting passt..."
 echo
 
-ip netns exec "${ns}" ./passt | cat
+ip netns exec "${ns}" ./passt -f -e -t all