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-rw-r--r--doc/manual/conntrack-tools.tmpl7
-rw-r--r--doc/sync/alarm/conntrackd.conf3
-rw-r--r--doc/sync/ftfw/conntrackd.conf3
-rw-r--r--doc/sync/notrack/conntrackd.conf3
4 files changed, 13 insertions, 3 deletions
diff --git a/doc/manual/conntrack-tools.tmpl b/doc/manual/conntrack-tools.tmpl
index 47e6f84..63a53e4 100644
--- a/doc/manual/conntrack-tools.tmpl
+++ b/doc/manual/conntrack-tools.tmpl
@@ -660,6 +660,13 @@ Sync {
<sect3 id="sync-expect"><title>Synchronization of expectations</title>
+ <note><title>Check your Linux kernel version first</title>
+ <para>
+ The synchronization of expectations require a Linux kernel &gt;= 3.5
+ to work appropriately.
+ </para>
+ </note>
+
<para>The connection tracking system provides helpers that allows you to
filter multi-flow application protocols like FTP, H.323 and SIP among many
others. These protocols usually split the control and data traffic in
diff --git a/doc/sync/alarm/conntrackd.conf b/doc/sync/alarm/conntrackd.conf
index b9520fb..0223745 100644
--- a/doc/sync/alarm/conntrackd.conf
+++ b/doc/sync/alarm/conntrackd.conf
@@ -194,7 +194,8 @@ Sync {
# Set this option on if you want to enable the synchronization
# of expectations. You have to specify the list of helpers that
- # you want to enable. Default is off.
+ # you want to enable. Default is off. This feature requires
+ # a Linux kernel >= 3.5.
#
# ExpectationSync {
# ftp
diff --git a/doc/sync/ftfw/conntrackd.conf b/doc/sync/ftfw/conntrackd.conf
index 53a7d0f..65e7b77 100644
--- a/doc/sync/ftfw/conntrackd.conf
+++ b/doc/sync/ftfw/conntrackd.conf
@@ -217,7 +217,8 @@ Sync {
# Set this option on if you want to enable the synchronization
# of expectations. You have to specify the list of helpers that
- # you want to enable. Default is off.
+ # you want to enable. Default is off. This feature requires
+ # a Linux kernel >= 3.5.
#
# ExpectationSync {
# ftp
diff --git a/doc/sync/notrack/conntrackd.conf b/doc/sync/notrack/conntrackd.conf
index 11f022e..3d036fb 100644
--- a/doc/sync/notrack/conntrackd.conf
+++ b/doc/sync/notrack/conntrackd.conf
@@ -256,7 +256,8 @@ Sync {
# Set this option on if you want to enable the synchronization
# of expectations. You have to specify the list of helpers that
- # you want to enable. Default is off.
+ # you want to enable. Default is off. This feature requires
+ # a Linux kernel >= 3.5.
#
# ExpectationSync {
# ftp