Cause: since BZ#2209754 was fixed, a change in the RBAC resource query was introduced. Due to an issue in the present version of SQLAlchemy 1.3.2, the SQL query performed doesn't retrieve all the RBAC entries per resource. Consequence: if a network has two RBAC registers, one with action "access_as_shared" and other with "access_as_external", and both are accessible to a specific non-admin user, the "openstack port list --share" query won't show the related network. However this network will be still available for this user due to the "access_as_external" RBAC entry. Workaround (if any): install a newer SQLAlchemy version (1.3.13+). That could be manually installed inside the Neutron API container. However that is strictly not recommended, on the OSP 16.2 release phase, to bump the SQLAlchemy version, that will affect any other API server and there is no time to test it properly. Result: any non-admin user will be able to use a network with both RBAC registers ("access_as_shared", "access_as_external") but it won't appear in the command "openstack port list --share" because this network will have the "shared" flag as False.