From 8c9206363370ae99c880ab17693881655574089a Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Thu, 17 Nov 2022 18:27:57 +0900
Subject: network: tc-cake: add support to specify ACK filter

---
 man/systemd.network.xml | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'man/systemd.network.xml')

diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 3b33159c04..6a7ab696a3 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -4036,6 +4036,17 @@ Token=prefixstable:2002:da8:1::</programlisting></para>
         </listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><varname>AckFilter=</varname></term>
+        <listitem>
+          <para>Takes a boolean value, or special value <literal>aggressive</literal>. If enabled, ACKs in
+          each flow are queued and redundant ACKs to the upstream are dropped. If yes, the filter will always
+          keep at least two redundant ACKs in the queue, while in <literal>aggressive</literal> mode, it will
+          filter down to a single ACK. This may improve download throughput on links with very asymmetrical
+          rate limits. Defaults to unset, and the kernel's default will be used.</para>
+        </listitem>
+      </varlistentry>
+
     </variablelist>
   </refsect1>
 
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