run

#!/command/with-contenv bashio
# shellcheck shell=bash
# ==============================================================================
# Home Assistant Community Add-on: Tailscale
# Runs tailscale
# ==============================================================================
declare -a options
declare udp_port

bashio::log.info 'Starting Tailscale...'

options+=(--state=/data/tailscaled.state)
options+=(--statedir=/data/state)

# Opt out of client log upload to log.tailscale.io
if ! bashio::debug ; then
  options+=(--no-logs-no-support)
fi

# Use configured UDP port
udp_port=$(bashio::addon.port "41641/udp")
if bashio::var.has_value "${udp_port}"; then
  options+=(--port=${udp_port})
fi

# Use userspace networking by default when not set, or when explicitly enabled
if ! bashio::config.has_value "userspace_networking" || \
  bashio::config.true "userspace_networking";
then
  options+=(--tun=userspace-networking)
fi

# Run Tailscale
if bashio::debug ; then
  exec /opt/tailscaled "${options[@]}"
else
  bashio::log.notice \
    "Tailscale logs will be suppressed after 200 lines, set add-on's" \
    "configuration option 'log_level' to 'debug' to see further logs"

  /opt/tailscaled "${options[@]}" 2>&1 \
    | stdbuf -i0 -oL -eL \
      sed -n -e '1,200p' \
        -e "201c[further tailscaled logs suppressed, set add-on's configuration option 'log_level' to 'debug' to see further tailscaled logs]"
fi