(see <citerefentry project="wireguard"><refentrytitle>wg</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
This option is mandatory to use WireGuard.
Note that because this information is secret, you may want to set
- the permissions of the .netdev file to be owned by <literal>root:systemd-networkd</literal>
+ the permissions of the .netdev file to be owned by <literal>root:systemd-network</literal>
with a <literal>0640</literal> file mode.</para>
</listitem>
</varlistentry>