<row><entry><varname>vti</varname></entry>
<entry>An IPv4 over IPSec tunnel.</entry></row>
+ <row><entry><varname>vti6</varname></entry>
+ <entry>An IPv6 over IPSec tunnel.</entry></row>
+
<row><entry><varname>vxlan</varname></entry>
<entry>A virtual extensible LAN (vxlan), for connecting Cloud computing deployments.</entry></row>
</tbody>
<literal>gretap</literal>,
<literal>ip6gre</literal>,
<literal>ip6gretap</literal>,
- <literal>vti</literal>, and
+ <literal>vti</literal>,
+ <literal>vti6</literal>, and
<literal>ip6tnl</literal> and accepts
the following keys:</para>