Network component
=================

.. seo::
    :description:
    :image: network-wifi.svg
    :keywords: Network, WiFi, WLAN, Ethernet, ESP32

The network component is a global configuration for all types of 
networks (WiFi, Ethernet).

.. code-block:: yaml

    # Example configuration
    network:
        enable_ipv6: true
        min_ipv6_addr_count: 2
        
Configuration variables:
------------------------

- **enable_ipv6** (*Optional*, boolean): Enables IPv6 support. Defaults to ``false``.
- **min_ipv6_addr_count** (*Optional*, integer): ESPHome considers the network to be connected when it has one IPv4 address and this number of IPv6 addresses. Defaults to ``0`` so as to not hang on boot with networks where IPv6 is not enabled. ``2`` is typically a reasonable value for configurations requiring IPv6.

.. note::

    The `lwIP <https://savannah.nongnu.org/projects/lwip/>`_ library used for the network component currently only implements IPv6 SLAAC according to `RFC4862 <https://datatracker.ietf.org/doc/rfc4862/>`_. The interface identifier (IID) is directly generated from the device MAC address.
    This has various security and privacy implications decribed in `RFC7721 <https://datatracker.ietf.org/doc/rfc7721/>`_, as this might leak outside of the smart home network and makes the device uniquely identifiable.
    Therefore, the address generation does not comply to `RFC7217 <https://datatracker.ietf.org/doc/rfc7217/>`_.

See Also
--------

- :doc:`/components/wifi`
- :doc:`/components/ethernet`
- :ghedit:`Edit`