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Next: <a href="Configuration-of-FreeBSD-kernels.html#Configuration-of-FreeBSD-kernels" accesskey="n" rel="next">Configuration of FreeBSD kernels</a>, Up: <a href="Configuring-the-kernel.html#Configuring-the-kernel" accesskey="u" rel="up">Configuring the kernel</a> [<a href="Concept-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Configuration-of-Linux-kernels-1"></a>
<h4 class="subsection">2.1.1 Configuration of Linux kernels</h4>
<a name="index-Universal-tun_002ftap"></a>
<p>For tinc to work, you need a kernel that supports the Universal tun/tap device.
Most distributions come with kernels that already support this.
Here are the options you have to turn on when configuring a new kernel:
</p>
<div class="example">
<pre class="example">Code maturity level options
[*] Prompt for development and/or incomplete code/drivers
Network device support
<M> Universal tun/tap device driver support
</pre></div>
<p>It’s not necessary to compile this driver as a module, even if you are going to
run more than one instance of tinc.
</p>
<p>If you decide to build the tun/tap driver as a kernel module, add these lines
to <samp>/etc/modules.conf</samp>:
</p>
<div class="example">
<pre class="example">alias char-major-10-200 tun
</pre></div>
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