From b5834a0b38c1aa7d6975d76971cd75c07455d129 Mon Sep 17 00:00:00 2001
From: Susant Sahani <ssahani@users.noreply.github.com>
Date: Wed, 4 May 2016 01:24:26 +0530
Subject: networkd: Add support to configure IPv6 preferred lifetime (#3102)

Closes #2166.

We only allow 0, infinity and forever.
infinity and forever is same.
---
 man/systemd.network.xml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'man')

diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 1ed7b67086..5e287faa6e 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -652,6 +652,18 @@
             <para>An address label.</para>
           </listitem>
         </varlistentry>
+        <varlistentry>
+          <term><varname>PreferredLifetime=</varname></term>
+          <listitem>
+            <para>Allows the default "preferred lifetime" of the address to be overridden.
+            Only three settings are accepted: <literal>forever</literal> or <literal>infinity</literal>
+            which is the default and means that the address never expires, and <literal>0</literal> which means
+            that the address is considered immediately "expired" and will not be used,
+            unless explicitly requested. A setting of PreferredLifetime=0 is useful for
+            addresses which are added to be used only by a specific application,
+            which is then configured to use them explicitly.</para>
+          </listitem>
+        </varlistentry>
       </variablelist>
   </refsect1>
 
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