diff --git a/vagrant--devstack/README.md b/vagrant--devstack/README.md
index 3603e4f..00345d7 100644
--- a/vagrant--devstack/README.md
+++ b/vagrant--devstack/README.md
@@ -3,7 +3,7 @@
 ## Usage
 
     vagrant up --provider=libvirt
-
+    ssh -L8080:192.168.56.21:80 debian@... -N
 
 # Other