Comment 3 for bug 1877692

> Is this a mandatory setting? or can the charm be configured to detect that no floating-ip-subnet was given and skip the need for this?

I think setting the annotation on services is a workaround, but not a good long-term solution. The charm should probably set internal-lb=true in cloud-provider-openstack config[1] for your use case so that the annotation is not needed.

[1]: https://github.com/kubernetes/cloud-provider-openstack/blob/v1.17.0/docs/provider-configuration.md#load-balancer-optional-parameters