diff --git a/.gitignore b/.gitignore
index 53ddc8431bfbada1c51380f25d1f8d030151d717..c1bd7550f7db29236489f495de52a177071e9eba 100644
--- a/.gitignore
+++ b/.gitignore
@@ -77,3 +77,11 @@ tags
 #########
 
 build/
+
+# temporary files #
+###################
+
+# A fresh version of this file has to be provided by the administrator each
+# time new systems should be installed. Hence, it's not suitable for version
+# control.
+vars/network.yml