  <varlistentry>
  <term><emphasis remap='B'>nat_traversal</emphasis></term>
  <listitem>
<para>whether to accept/offer to support NAT (NAPT, also known as "IP Masqurade")
workaround for IPsec. Acceptable values are:
<emphasis remap='B'>yes</emphasis>
and
<emphasis remap='B'>no</emphasis>
(the default).
This parameter may eventually become per-connection.</para>

  </listitem>
  </varlistentry>

