  <varlistentry>
  <term><emphasis remap='B'>protostack</emphasis></term>
  <listitem>
<para>decide which protocol stack is going to be used. Valid values are "klips", "netkey" (the default) and "mast". The "mast" stack is a variation for the KLIPS stack. The value "auto" has been obsoleted.
</para>
  </listitem>
  </varlistentry>

