--netfilter-mode=off

mv tailscale tailscaled /usr/sbin/

opkg update
opkg install ca-bundle kmod-tun

nano /etc/init.d/tailscale

------------------------------------------------------------------
#!/bin/sh /etc/rc.common

# Copyright 2020 Google LLC.
# SPDX-License-Identifier: Apache-2.0

USE_PROCD=1
START=80

start_service() {
  /usr/sbin/tailscaled --cleanup

  procd_open_instance 
  procd_set_param command /usr/sbin/tailscaled

  # Set the port to listen on for incoming VPN packets.
  # Remote nodes will automatically be informed about the new port number,
  # but you might want to configure this in order to set external firewall
  # settings.
  procd_append_param command --port 41641

  # OpenWRT /var is a symlink to /tmp, so write persistent state elsewhere.
  procd_append_param command --state /etc/tailscale/tailscaled.state

  # Set the environment variable for memory limit
  procd_append_param env GOMEMLIMIT=100MiB

  procd_set_param respawn
  procd_set_param stdout 1
  procd_set_param stderr 1

  procd_close_instance
}

stop_service() {
  /usr/sbin/tailscaled --cleanup
}
------------------------------------------------------------------

chmod +x /etc/init.d/tailscale
/etc/init.d/tailscale start
/etc/init.d/tailscale enable