Comment 2 for bug 1536768

GIven the fact that the "one L3 agent per external network" method has been obsolete for a while, I'd say at this point this definitely is a bug. The multiple flat external networks approach described in the linked blog post has been available for two full years.

There is an additional problem here: suppose you have two network gateway nodes. Normally you would use those to deploy HA routers. If you want to support two external networks, what Juju currently forces you to do is deploy two neutron-gateway services, each connected to a different external network — which means you can never run HA routers, at least not if they are meant to be connected to external networks.

This charm really *must* support an empty external_network_bridge and gateway_external_network_id.