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-rw-r--r--man/sysctl.d.xml4
1 files changed, 4 insertions, 0 deletions
diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml
index 0a8eeb62a4..21ef6de97c 100644
--- a/man/sysctl.d.xml
+++ b/man/sysctl.d.xml
@@ -59,6 +59,10 @@
<filename>/proc/sys/net/ipv4/conf/enp3s0.200/forwarding</filename>.
</para>
+ <para>If a variable assignment is prefixed with a single <literal>-</literal> character, any attempts to
+ set it that fail will be ignored (though are logged). Moreover, any access permission errors, and
+ attempts to write variables not defined on the local system are ignored (and logged) too.</para>
+
<para>The settings configured with <filename>sysctl.d</filename>
files will be applied early on boot. The network
interface-specific options will also be applied individually for