</listitem>
<listitem>
- <para>The update service should declare <varname>DefaultDependencies=false</varname>,
+ <para>The update service should declare <varname>DefaultDependencies=no</varname>,
<varname>Requires=sysinit.target</varname>, <varname>After=sysinit.target</varname>,
<varname>After=system-update-pre.target</varname>
and explicitly pull in any other services it requires.</para>
</listitem>
+
+ <listitem>
+ <para>It may be desirable to always run an auxiliary unit when booting
+ into offline-updates mode, which itself does not install updates. To
+ do this create a .service file with
+ <varname>Wants=system-update-pre.target</varname> and
+ <varname>Before=system-update-pre.target</varname> and add a symlink
+ to that file under
+ <filename noindex='true'>/usr/lib/systemd/system-update.target.wants</filename>
+ .</para>
+ </listitem>
</orderedlist>
</refsect1>