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+<table class="head">
+ <tr>
+ <td class="head-ltitle">URE(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">URE(4)</td>
+ </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">ure</code> &#x2014; <span class="Nd">Realtek
+ RTL8152/RTL8153/RTL8156 USB Ethernet driver</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp">To compile this driver into the kernel, place the following lines
+ in your kernel configuration file:</p>
+<div class="Bd Pp Bd-indent"><code class="Cd">device uhci</code>
+<br/>
+<code class="Cd">device ohci</code>
+<br/>
+<code class="Cd">device usb</code>
+<br/>
+<code class="Cd">device miibus</code>
+<br/>
+<code class="Cd">device uether</code>
+<br/>
+<code class="Cd">device ure</code></div>
+<p class="Pp">Alternatively, to load the driver as a module at boot time, place
+ the following line in <a class="Xr">loader.conf(5)</a>:</p>
+<div class="Bd Pp Bd-indent Li">
+<pre>if_ure_load=&quot;YES&quot;</pre>
+</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">ure</code> driver supports the Realtek USB
+ Ethernet Controller family.</p>
+<p class="Pp">The <code class="Nm">ure</code> driver supports the following
+ media types:</p>
+<dl class="Bl-tag">
+ <dt id="autoselect"><a class="permalink" href="#autoselect"><code class="Cm">autoselect</code></a></dt>
+ <dd>Enable auto selection of the media type and options. The user can manually
+ override the auto selected mode by adding media options to the
+ <span class="Pa">/etc/rc.conf</span> file.</dd>
+ <dt id="10baseT/UTP"><a class="permalink" href="#10baseT/UTP"><code class="Cm">10baseT/UTP</code></a></dt>
+ <dd>Set 10Mbps operation. The <code class="Cm">mediaopt</code> option can also
+ be used to select either <code class="Cm">full-duplex</code> or
+ <code class="Cm">half-duplex</code> modes.</dd>
+ <dt id="100baseTX"><a class="permalink" href="#100baseTX"><code class="Cm">100baseTX</code></a></dt>
+ <dd>Set 100Mbps (Fast Ethernet) operation. The
+ <code class="Cm">mediaopt</code> option can also be used to select either
+ <code class="Cm">full-duplex</code> or <code class="Cm">half-duplex</code>
+ modes.</dd>
+ <dt id="1000baseTX"><a class="permalink" href="#1000baseTX"><code class="Cm">1000baseTX</code></a></dt>
+ <dd>Set 1000baseTX (Gigabit Ethernet) operation over twisted pair. The Realtek
+ gigE chips support 1000Mbps in <code class="Cm">full-duplex</code> mode
+ only.</dd>
+ <dt id="2500base-T"><a class="permalink" href="#2500base-T"><code class="Cm">2500base-T</code></a></dt>
+ <dd>Set 2500Base-T operation over twisted pair. The Realtek 8156/8156B chips
+ support 2500Mbps in <code class="Cm">full-duplex</code> mode only.</dd>
+</dl>
+<p class="Pp">The <code class="Nm">ure</code> driver supports the following
+ media options for 10/100 operation:</p>
+<dl class="Bl-tag">
+ <dt id="full-duplex"><a class="permalink" href="#full-duplex"><code class="Cm">full-duplex</code></a></dt>
+ <dd>Force full-duplex operation.</dd>
+ <dt id="half-duplex"><a class="permalink" href="#half-duplex"><code class="Cm">half-duplex</code></a></dt>
+ <dd>Force half-duplex operation.</dd>
+</dl>
+<p class="Pp">For more information on configuring this device, see
+ <a class="Xr">ifconfig(8)</a>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
+<p class="Pp">The <code class="Nm">ure</code> driver supports the following USB
+ Ethernet controllers:</p>
+<table class="Bl-column">
+ <tr>
+ <td>Model:</td>
+ <td>Speed (Mbps):</td>
+ </tr>
+ <tr>
+ <td>Realtek RTL8156/RTL8156B/RTL8156BG</td>
+ <td>10, 100, 1000, and 2500</td>
+ </tr>
+ <tr>
+ <td>Realtek RTL8153/RTL8153B</td>
+ <td>10, 100, and 1000</td>
+ </tr>
+ <tr>
+ <td>Realtek RTL8152</td>
+ <td>10 and 100</td>
+ </tr>
+ <tr>
+ <td>Realtek RTL8168/8169/8110/8211 via rgephy(4)</td>
+ <td>10, 100, and 1000</td>
+ </tr>
+</table>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1>
+<dl class="Bl-diag">
+ <dt>ure%d: watchdog timeout</dt>
+ <dd>A packet was queued for transmission and a transmit command was issued,
+ however the device failed to acknowledge the transmission before a timeout
+ expired.</dd>
+</dl>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">arp(4)</a>, <a class="Xr">miibus(4)</a>,
+ <a class="Xr">netintro(4)</a>, <a class="Xr">ng_ether(4)</a>,
+ <a class="Xr">ifconfig(8)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp">The <code class="Nm">ure</code> driver was written by
+ <span class="An">Kevin Lo</span>
+ &lt;<a class="Mt" href="mailto:kevlo@FreeBSD.org">kevlo@FreeBSD.org</a>&gt;.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">April 8, 2025</td>
+ <td class="foot-os">FreeBSD 15.0</td>
+ </tr>
+</table>