if [ "$(uci -q get network.client.fff_snat)" = '1' ]; then
	nft add table ip mangle
	nft add chain ip mangle PREROUTING '{ type filter hook prerouting priority mangle; policy accept; }'

	nft add table ip nat
	nft add chain ip nat POSTROUTING '{ type nat hook postrouting priority srcnat; policy accept; }'

	nft add rule ip mangle PREROUTING iifname "br-client" counter mark set 0x736e6174
	nft add rule ip nat POSTROUTING meta mark 0x736e6174 counter snat ip to $(uci -q get network.client.fff_snat_sourceip)
fi