Comment 3 for bug 1190372

This patch is needed while using openstack with provider networks and external gateway devices. We are having such setup, and were affected by the bug. Without the patch the cirros guests will not get gateway out of the openstack, nor will it get metadata.

Here is a blog about how to setup the openstack for it:

http://techbackground.blogspot.ie/2013/06/metadata-via-dhcp-namespace.html

Without this correction cirros image is rather useless in openstack with external routers.