patch zero interval upnpd for OpenWRT
git clone https://git.openwrt.org/openwrt/openwrt.git
cd openwrt
echo 'src-git upnpdfix https://github.com/mrFallon/miniupnpd.git' >> feeds.conf.default
./scripts/feeds update -a
./scripts/feeds install -a
rsync -a feeds/upnpdfix/net/ feeds/packages/net/
#make defconfig
make menuconfig
#select network-firewall-miniupnpd-nftables
make -j4
#make package/miniupnpd/{clean,prepare,compile} V=sc