[rygel] data,doc: Update for IPv6

[Jens Georg <jensgeorg src gnome org>]

commit f7fc9e3e7cdd0f41fb410b76a5d7dacc1cd33692
Author: Jens Georg <mail jensge org>
Date:   Sun Aug 9 23:20:47 2020 +0200

    data,doc: Update for IPv6
    
    Add IPv6 setting to default file and config manpage

 data/rygel.conf        | 3 +++
 doc/man/rygel.conf.xml | 8 ++++++++
 2 files changed, 11 insertions(+)
---
diff --git a/data/rygel.conf b/data/rygel.conf
index 56a612a9..480abdb5 100644
--- a/data/rygel.conf
+++ b/data/rygel.conf
@@ -2,6 +2,9 @@
 
 # General configuration options
 [general]
+# Set to 'false' if you don't want Rygel to run on IPv6 addresses
+# Whether or not IPv6 is supported depends on how GUPnP was configured
+ipv6=true
 
 # Set it to 'false' if you want to disable transcoding support.
 enable-transcoding=true
diff --git a/doc/man/rygel.conf.xml b/doc/man/rygel.conf.xml
index c9821772..124048e4 100644
--- a/doc/man/rygel.conf.xml
+++ b/doc/man/rygel.conf.xml
@@ -107,6 +107,14 @@ man(1), man(7), http://www.tldp.org/HOWTO/Man-Page/
         (<userinput>;</userinput>). Boolean values may be either
         <userinput>true</userinput> or <userinput>false</userinput>.</para>
     <variablelist>
+      <varlistentry>
+        <term>
+          <option>ipv6</option>
+        </term>
+        <listitem>
+          <para>Set to <userinput>false</userinput> to disable binding to IPv6 addresses</para>
+        </listitem>
+      </varlistentry>
       <varlistentry>
         <term>
           <option>interface=<replaceable>INTERFACE</replaceable></option>