Describe your problem. Include specific actions and error messages.
When deploying Octavia on RHOSO 18.0.2, if we specify a CIDR other than /16 in the NAD, the Octavia controller fails with the following error:

ERROR Reconciler error {​​​​​"controller": "octavia", "controllerGroup": "octavia.openstack.org", "controllerKind": "Octavia", "Octavia ":

​​​​​, "namespace": "openstack", "name": "octavia", "reconcileID": "d1c6f437-3c56-4653-bb2e-f986d54ec57d", "error": "the tenant CIDR is /21, it should be /16"}​​​​​

Describe the impact to you or the business
We can't deploy Octavia on our preproduction environment and we can't qualify the product.

In what environment are you experiencing this behavior?
Production

How frequently does this behavior occur? Does it occur repeatedly or at certain times?
Always