best practice setting instance routing table?

asked 2016-02-10 20:51:53 -0500

The screenshot shows two instances on two different networks. If instance front-vm wants to reach back-vm, it needs to add a routing table entry. devstack screenshot showing instances front-vm and back-vm on different networks connected via a router

One way this could be done is via user_data and cloud-init. That's fine, but I think this is a common task, and I wonder if Nova or Neutron have a way to accomplish this, analogous to injecting a public key into an instance?

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