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-rw-r--r--Documentation/networking/nf_conntrack-sysctl.txt11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/networking/nf_conntrack-sysctl.txt b/Documentation/networking/nf_conntrack-sysctl.txt
index 433b6724797a..497d668288f9 100644
--- a/Documentation/networking/nf_conntrack-sysctl.txt
+++ b/Documentation/networking/nf_conntrack-sysctl.txt
@@ -96,6 +96,17 @@ nf_conntrack_max - INTEGER
Size of connection tracking table. Default value is
nf_conntrack_buckets value * 4.
+nf_conntrack_default_on - BOOLEAN
+ 0 - don't register conntrack in new net namespaces
+ 1 - register conntrack in new net namespaces (default)
+
+ This controls wheter newly created network namespaces have connection
+ tracking enabled by default. It will be enabled automatically
+ regardless of this setting if the new net namespace requires
+ connection tracking, e.g. when NAT rules are created.
+ This setting is only visible in initial user namespace, it has no
+ effect on existing namespaces.
+
nf_conntrack_tcp_be_liberal - BOOLEAN
0 - disabled (default)
not 0 - enabled