diff --git a/uncloud/hack/hackcloud/ifup.sh b/uncloud/hack/hackcloud/ifup.sh
index 99e8690..e0a3ca0 100755
--- a/uncloud/hack/hackcloud/ifup.sh
+++ b/uncloud/hack/hackcloud/ifup.sh
@@ -1,7 +1,5 @@
 #!/bin/sh
 
-echo $@ >> foo
-
 dev=$1; shift
 
 # bridge is setup from outside