2014-08-24 18:18:18 +01:00
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-ipv4">
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<title>IPv4 Configuration</title>
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<para>By default, NixOS uses DHCP (specifically,
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<command>dhcpcd</command>) to automatically configure network
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interfaces. However, you can configure an interface manually as
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follows:
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<programlisting>
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2014-08-31 09:58:54 +01:00
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networking.interfaces.eth0 = { ipAddress = "192.168.1.2"; prefixLength = 24; };
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2014-08-24 18:18:18 +01:00
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</programlisting>
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2014-08-31 09:58:54 +01:00
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(The network prefix can also be specified using the option
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<literal>subnetMask</literal>,
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e.g. <literal>"255.255.255.0"</literal>, but this is deprecated.)
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2014-08-24 18:18:18 +01:00
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Typically you’ll also want to set a default gateway and set of name
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servers:
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<programlisting>
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networking.defaultGateway = "192.168.1.1";
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networking.nameservers = [ "8.8.8.8" ];
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</programlisting>
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</para>
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<note><para>Statically configured interfaces are set up by the systemd
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service
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<replaceable>interface-name</replaceable><literal>-cfg.service</literal>.
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The default gateway and name server configuration is performed by
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<literal>network-setup.service</literal>.</para></note>
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<para>The host name is set using <option>networking.hostName</option>:
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<programlisting>
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networking.hostName = "cartman";
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</programlisting>
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The default host name is <literal>nixos</literal>. Set it to the
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empty string (<literal>""</literal>) to allow the DHCP server to
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provide the host name.</para>
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</section>
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