Neutron - Stein - Having two external networks will prevent the router from being created.

I am seeing an issue where creating two networks marked as external will prevent a Neutron router from spawning on the Controllers. Ports attached to those networks will be shown as down.

Environment:
- Openstack Stein.
- Deployed through Kolla.

1) One network+subnet (EXT) marked as external with X vlan configured on physnet1. This is expected to be used as the SNAT for a router and floating IPs. Not marked as shared.
2) One network+subnet (PROV) marked as external with Y vlan configured on physnet1. Not currently in use on any qrouters.
3) Create one router with SNAT and the external network set as the EXT network.
4) The router is created within Openstack but is never created on the Controllers namespaces. All port are marked as down.
5) I've attached the logs.
6) If I clear the gateway from the router, the router is spawned and the interfaces come up.
7) If I re-add the gateway with the EXT network. The router goes down and the interfaces are deleted.

-----------------

2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent [-] Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.: RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent Traceback (most recent call last):
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 710, in _process_routers_if_compatible
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent self._process_router_if_compatible(router)
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 551, in _process_router_if_compatible
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent router_id=router['id'])
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent RouterNotCompatibleWithAgent: Router 'b6dba893-1454-4c0f-9088-e61edef31902' is not compatible with this agent.
2019-10-22 18:52:27.199 49 ERROR neutron.agent.l3.agent
2019-10-22 18:52:27.200 49 DEBUG neutron.agent.l3.agent [-] Payload:

2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server [req-f62c802f-d047-45d7-a3eb-b40e8c44f6ae - - - - -] Exception during message handling: TooManyExternalNetworks: More than one external network exists.
2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/api/rpc/handlers/l3_rpc.py", line 254, in get_external_network_id
2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server net_id = self.plugin.get_external_network_id(context)
2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/lib/python2.7/site-packages/neutron/db/external_net_db.py", line 149, in get_external_network_id
2019-10-22 18:52:20.296 31 ERROR oslo_messaging.rpc.server TooManyExternalNetworks: More than one external network exists.