Running 'tailscale status' gives healthcheck error

KVM
1

Hi - brand new Comet-X. I successfuly added the device to my tailnet. When I run a “tailscale status”, I get this error message:

tailscale status
<device listing redacted>

Health check:

- adding [-i tailscale0 -j MARK --set-mark 0x40000/0xff0000] in v4/filter/ts-forward: running [/usr/sbin/iptables -t filter -A ts-forward -i tailscale0 -j MARK --set-mark 0x40000/0xff0000 --wait]: exit status 2: Warning: Extension MARK revision 0 not supported, missing kernel module?

iptables v1.8.9 (legacy): MARK: bad value for option "--set-mark", or out of range (0-4294967295).

Try `iptables -h' or 'iptables --help' for more information.

I am running the installed version of tailscale:

tailscale version
1.92.5-dev20260610
tailscale commit: f6480a6732ce7ca2b1b7f0e29c480598242fa3ae
long version: 1.92.5-dev20260610-tf6480a673
go version: go1.25.5

And am running the current firmware: V1.8.1 release2

How do I resolve this?

3

Hi, thanks for the feedback. Please try updating to the latest beta firmware and check if the issue is resolved.

You can find the firmware here: 1.10.1 Beta test firmware for RM1V2/RM1PE/RM10RC/RM4PE

4

Yes, that resolved the issue. Thanks!

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