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.. _neutron-ml2_gre:

.. list-table:: Description of ML2 GRE configuration options
   :header-rows: 1
   :class: config-ref-table

   * - Configuration option = Default value
     - Description
   * - **[ml2_type_gre]**
     -
   * - ``tunnel_id_ranges`` =
     - (List) Comma-separated list of <tun_min>:<tun_max> tuples enumerating ranges of GRE tunnel IDs that are available for tenant network allocation