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-rw-r--r--man/sysctl.d.xml21
1 files changed, 17 insertions, 4 deletions
diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml
index 8a131791a5..e5b2bc0ac9 100644
--- a/man/sysctl.d.xml
+++ b/man/sysctl.d.xml
@@ -123,11 +123,12 @@
</example>
<example>
- <title>Disable packet filter on bridged packets (method one)</title>
+ <title>Apply settings available only when a certain module is loaded (method one)</title>
<para><filename>/etc/udev/rules.d/99-bridge.rules</filename>:
</para>
- <programlisting>ACTION=="add", SUBSYSTEM=="module", KERNEL=="bridge", RUN+="/usr/lib/systemd/systemd-sysctl --prefix=/net/bridge"
+ <programlisting>ACTION=="add", SUBSYSTEM=="module", KERNEL=="br_netfilter", \
+ RUN+="/usr/lib/systemd/systemd-sysctl --prefix=/net/bridge"
</programlisting>
<para><filename>/etc/sysctl.d/bridge.conf</filename>:
@@ -137,14 +138,20 @@
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-arptables = 0
</programlisting>
+
+ <para>This method applies settings when the module is
+ loaded. Please note that unless the <filename>br_netfilter</filename>
+ module is loaded, bridged packets will not be filtered by
+ netfilter (starting with kernel 3.18), so simply not loading the
+ module is suffient to avoid filtering.</para>
</example>
<example>
- <title>Disable packet filter on bridged packets (method two)</title>
+ <title>Apply settings available only when a certain module is loaded (method two)</title>
<para><filename>/etc/modules-load.d/bridge.conf</filename>:
</para>
- <programlisting>bridge</programlisting>
+ <programlisting>br_netfilter</programlisting>
<para><filename>/etc/sysctl.d/bridge.conf</filename>:
</para>
@@ -153,6 +160,12 @@ net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-arptables = 0
</programlisting>
+
+ <para>This method forces the module to be always loaded. Please
+ note that unless the <filename>br_netfilter</filename> module is
+ loaded, bridged packets will not be filtered with netfilter
+ (starting with kernel 3.18), so simply not loading the module is
+ suffient to avoid filtering.</para>
</example>
</refsect1>