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Merge pull request #52 from chungy/slirp_custom_addr

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Document custom SLiRP addresses
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Miran Grča
2026-02-07 07:04:54 +01:00
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hardware/network.rst
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@@ -252,3 +252,26 @@ The host system can access forwarded ports through 127.0.0.1 or its own IP addre
0_internal = 80
1_protocol = udp
1_external = 5555
Custom SLiRP addresses
^^^^^^^^^^^^^^^^^^^^^^
If the default 10.0.x.0 addresses are unsuitable or undesired, they can be changed through the configuration file in the ``[Network]`` section, by defining ``net_0x_addr`` with the desired network (where x is the emulated network card). All networks are created with a network mask 255.255.255.0 (CIDR /24). It is strongly recommended to keep to the `Private-Use <https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml>`_ regions of IPv4; that is, stay within 10.0.0.0/8, 172.16.0.0/12, or 192.168.0.0/16.
.. container:: toggle-always-show
.. container:: toggle-header
Example: Set the first emulated network card's SLiRP network to 172.31.255.0/24
.. code-block:: none
[Network]
net_01_addr = 172.31.255.0
For whatever network address you choose, the same fixed addresses demonstrated in the :ref:`SLiRP <hardware/network:SLiRP>` section apply. Using the 172.31.255.0 example, the following addresses are used:
* **IP address:** 172.31.255.15
* **Subnet mask:** 255.255.255.0
* **Default gateway:** 172.31.255.2
* **DNS server:** 172.31.255.3