Comment 4 for bug 1824788

The document that guides in the creation of the provider network is external to neutron. It's linked from this other document

https://docs.openstack.org/install-guide/launch-instance.html#launch-instance-networks

And it's intended to be followed right before launching an instance.
Note that the documentation there is not branched.

I think it makes sense to link it also at the end of all option 1 documents.