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-rw-r--r--cloudinit/net/__init__.py14
1 files changed, 14 insertions, 0 deletions
diff --git a/cloudinit/net/__init__.py b/cloudinit/net/__init__.py
index 76cd4e8b..2435055b 100644
--- a/cloudinit/net/__init__.py
+++ b/cloudinit/net/__init__.py
@@ -349,6 +349,20 @@ def iface_add_attrs(iface):
def render_route(route, indent=""):
+ """ When rendering routes for an iface, in some cases applying a route
+ may result in the route command returning non-zero which produces
+ some confusing output for users manually using ifup/ifdown[1]. To
+ that end, we will optionally include an '|| true' postfix to each
+ route line allowing users to work with ifup/ifdown without using
+ --force option.
+
+ We may at somepoint not want to emit this additional postfix, and
+ add a 'strict' flag to this function. When called with strict=True,
+ then we will not append the postfix.
+
+ 1. http://askubuntu.com/questions/168033/
+ how-to-set-static-routes-in-ubuntu-server
+ """
content = ""
up = indent + "post-up route add"
down = indent + "pre-down route del"