/etc/init.d/miniupnpd enabled || exit 0

# If miniupnpd is not running:
# - check on _any_ event (event updates may contribute to network_find_wan*)

# If miniupnpd _is_ running:
# - check only on ifup (otherwise lease updates etc would cause
#   miniupnpd state loss)

. /lib/functions/procd.sh

[ "$ACTION" != "ifup" ] && procd_running "miniupnpd" "*" && exit 0

tmpconf="/var/etc/miniupnpd.conf"
extiface=$(uci get upnpd.config.external_iface)
extzone=$(uci get upnpd.config.external_zone)

. /lib/functions/network.sh

[ -z "$extiface" ] && {
  # manual external zone (if dynamically find interfaces
  # belonging to it) overrides network_find_wan*
  [ -n "$extzone"  ] && ifname=$(fw3 -q zone "$extzone" | head -1)
  [ -z "$extiface" ] && network_find_wan extiface
  [ -z "$extiface" ] && network_find_wan6 extiface
}

[ -z "$ifname" ] && network_get_device ifname "$extiface"
grep -q "ext_ifname=$ifname" "$tmpconf" || /etc/init.d/miniupnpd restart