[ovirt-users] Ubuntu - Cloud-init - Routed Networking Problem

Hi, I am trying to solve a problem maybe someone knows: i need routed network on ubuntu with the command post-up. However upon runing cloud-init this command gets deleted on /etc/network/interfaces. Is there any other place to put post-up route instead of /etc/network/interfaces? Is there a way to have cloud-init inject these commands? Regards Thanks