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+.. SPDX-License-Identifier: GPL-2.0
+
+=========================
+Netfilter Sysfs variables
+=========================
+
+/proc/sys/net/netfilter/* Variables:
+====================================
+
+nf_log_all_netns - BOOLEAN
+ - 0 - disabled (default)
+ - not 0 - enabled
+
+ By default, only init_net namespace can log packets into kernel log
+ with LOG target; this aims to prevent containers from flooding host
+ kernel log. If enabled, this target also works in other network
+ namespaces. This variable is only accessible from init_net.