[Kolla-ansible][Yoga][Trove] Creation of instance fails

Hi, The creation of the Trove instance fails, from my debugging I found this : - The db instance is not responding on its trove interface. - The controller (trove-management) can't reach it. I have a vlan network dedicated to the Trove instances, I have created a simple VM on that network and used the same security group used by the db instance. The simple VM responds to ping and ssh connections, the Trove instance does not. I added another interface to the db instance in another network, and the instance pings and responds to ssh connections on it!!! still I don't know how to access the db instance via ssh. I don't understand. Regards.