From cbdc9062886eef7a9aa355689429c6e19332a72e Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Fri, 13 Nov 2020 15:05:31 +0900
Subject: [PATCH] man: mention that FirewallMark= optionally takes firewall
 mask

Closes #17587.
---
 man/systemd.network.xml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 6229e20615..45fc791e26 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -1170,7 +1170,9 @@ IPv6Token=prefixstable:2002:da8:1::</programlisting></para>
         <varlistentry>
           <term><varname>FirewallMark=</varname></term>
           <listitem>
-            <para>Specifies the iptables firewall mark value to match (a number between 1 and 4294967295).</para>
+            <para>Specifies the iptables firewall mark value to match (a number between 1 and
+            4294967295). Optionally, the firewall mask (also a number between 1 and 4294967295) can be
+            suffixed with a slash (<literal>/</literal>), e.g., <literal>7/255</literal>.</para>
           </listitem>
         </varlistentry>
         <varlistentry>
-- 
2.25.1