openstack neutron-gateway - error: “could not add network device eno2 to ofproto (Device or resource busy)”

Question

I performed a cluster node installation using this guide [OpenStack Charms Deployment Guide].(https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/i

Answer 1

update 26/03/19:

On Juju gui I've that:

neutron-gateway:
    bridge-mappings:         physnet1:br-ex
    data-port:               br-ex:eno2
neutron-api:
    flat-network-providers:  physnet1

Before to make the deploy of Openstack I've changed data-port from br-ex:eno2 to br-ex:eno3

neutron-gateway:
    bridge-mappings:         physnet1:br-ex
    data-port:               br-ex:eno3

The issue on eno2 is been resolved but the ping to instance is still present.