juanfont/headscale · error

%s failed to bring tailscale client down (%s): %w

Error message

%s failed to bring tailscale client down (%s): %w

What it means

Error "%s failed to bring tailscale client down (%s): %w" thrown in juanfont/headscale.

Source

Thrown at integration/tsic/tsic.go:836

			"%s failed to bring tailscale client up (%s): %w",
			t.hostname,
			strings.Join(command, " "),
			err,
		)
	}

	return nil
}

// Down runs `tailscale down` with no arguments.
func (t *TailscaleInContainer) Down() error {
	command := []string{
		tailscaleBin,
		"down",
	}

	if _, _, err := t.Execute(command, dockertestutil.ExecuteCommandTimeout(dockerExecuteTimeout)); err != nil { //nolint:noinlineerr
		return fmt.Errorf(
			"%s failed to bring tailscale client down (%s): %w",
			t.hostname,
			strings.Join(command, " "),
			err,
		)
	}

	return nil
}

// DisconnectFromNetwork detaches the container from network at the
// docker daemon level. The container's network interface for that
// network disappears and any in-flight TCP connection is left
// half-open at the peer — the same failure mode a real cable pull
// produces, which iptables-based simulations cannot reproduce.
func (t *TailscaleInContainer) DisconnectFromNetwork(network *dockertest.Network) error {
	return dockertestutil.DisconnectContainerFromNetwork(t.pool, network, t.hostname)
}

View on GitHub (pinned to 565fd254d0)

Solutions

1. Inspect the wrapped error for the underlying cause and correct the failing condition (failed to bring tailscale client down ()); retry the operation after fixing the input, configuration, or environment.

Example fix

Inspect the wrapped error for the underlying cause and correct the failing condition (failed to bring tailscale client down ()); retry the operation after fixing the input, configuration, or environment.

When it happens

Trigger: Thrown at integration/tsic/tsic.go:836 when the library encounters an invalid state.

Common situations: 'tailscale down' failed inside the container. Check that tailscaled is running in the container.

AI-assisted analysis of juanfont/headscale@565fd254d0 (2026-08-15). Data as JSON: /api/errors/1cd847bdd5127de1. Report an issue: GitHub.