<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="ad-hoc-network-config">
  <title>Ad-Hoc Configuration</title>
  <para>
    You can use <xref linkend="opt-networking.localCommands" /> to
    specify shell commands to be run at the end of
    <literal>network-setup.service</literal>. This is useful for doing
    network configuration not covered by the existing NixOS modules. For
    instance, to statically configure an IPv6 address:
  </para>
  <programlisting language="bash">
networking.localCommands =
  ''
    ip -6 addr add 2001:610:685:1::1/64 dev eth0
  '';
</programlisting>
</section>
