firmware/src/packages/fff/fff-firewall/files/usr/lib/firewall.d/20-clamp-mss

#solves MTU problem with bad ISPs
iptables -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
	`#solves MTU problem with bad ISPs`
	`iptables -A FORWARD -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu`