  <varlistentry>
  <term><emphasis remap='B'>send-vendorid</emphasis></term>
  <listitem>
<para>whether to send our Vendor ID during IKE.
Acceptable values are: <emphasis remap='B'>no</emphasis> (the default) and
<emphasis remap='B'>yes</emphasis>. The vendor id sent can be configured
using the "config setup" option <emphasis remap='B'>myvendorid=</emphasis>.
It defaults to OE-Libreswan-VERSION.</para>

<para>Vendor ID's can be useful in tracking interoperability
problems. However, specific vendor identification and software versions
can be useful to an attacker when there are known vulnerabilities to a
specific vendor/version.</para>
<para>The prefix OE stands for "Opportunistic Encryption". This prefix
was historically used by The FreeS/WAN Project and The Openswan Project
(openswan up to version 2.6.38) and in one Xeleranized openswan versions
(2.6.39). Further Xeleranized openswan's use the prefix OSW.</para>
  </listitem>
  </varlistentry>
