@ -158,6 +158,11 @@
section of the NixOS manual</link> for more information.
</para>
</listitem>
<listitem>
<para>
<xref linkend="opt-services.nebula.networks" /> <link xlink:href="https://github.com/slackhq/nebula">Nebula VPN</link>
</itemizedlist>
</section>