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Bhupendra Nath
Asked: 2021-10-30 02:03:03 +0800 CST

Couldn't load target `NOTRACK':No such file or directory

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I am trying to add a IP table rule.

iptables -t raw -A PREROUTING -j NOTRACK

But when I am executing this I am getting below error:

iptables v1.8.4 (legacy): Couldn't load target `NOTRACK':No such file or directory

linux linux-kernel cilium

1 Answers

  1. This target is deprecated and has been superseded by the CT target. So I'm not surprised to see a system where support for this target was not built (in kernel) anymore.

    NOTRACK

    This extension disables connection tracking for all packets matching that rule. It is equivalent with -j CT --notrack. Like CT, NOTRACK can only be used in the raw table.

    You can replace the rule with:

    iptables -t raw -A PREROUTING -j CT --notrack

    If then this also doesn't work, you'd have to check exactly what support for iptables targets exist (eg: in /boot/config-*) or if there are additional restrictions on the host system.

    Relevant kernel options:

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