We use 17.x across all sites (other than one that is stuck on 16.16.3) without any issues, but we don't use PPPoE or any of the advanced features...   ... View more

Not directly what you need, but I think it could all be done with NetBox: https://github.com/netbox-community/netbox For the Automation, an API is available. But the system is also quite complex ... ... View more