diff --git a/docs/routing/babeld/babeld.md b/docs/routing/babeld/babeld.md
index 88c5954..1fb6f10 100644
--- a/docs/routing/babeld/babeld.md
+++ b/docs/routing/babeld/babeld.md
@@ -114,7 +114,8 @@ This can be created with the following command:
 ```
 ip route add unreachable <OWNNET> proto static
 ```
-This route does not survive a reboot (volatile).
+This route does not survive a reboot (volatile). The protocol `proto static` is necessary, because babeld ignores the default protocol. 
+
 You can delete it with the following command:
 ```
 ip route del <OWNNET>