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[SOLVED] This machine has IP forwarding disabled and cannot relay traffic. Please enable IP forwarding on this machine to use relay features like subnets or exit nodes.

Error added: 2025-12-04T22:52:22Z

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2 answers found.

Answer 2941 (100.0% helpful)

It seems as though just running
echo 1 > /proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
isn't enough.

This worked though:
echo 'net.ipv4.ip_forward = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
echo 'net.ipv6.conf.all.forwarding = 1' | sudo tee -a /etc/sysctl.d/99-tailscale.conf
sudo sysctl -p /etc/sysctl.d/99-tailscale.conf

Answer 2943 (0.0% helpful)

Once you have enabled it, restart tailscaled.
Simply tailscale down and tailscale up doesn't seem to be enough.

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