$IPT -t filter -A FORWARD -o $WAN -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPT -t nat -A POSTROUTING -o $WAN -j MASQUERADE
$IPT -t filter -A FORWARD -o $WAN -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
$IPT -t nat -A POSTROUTING -o $WAN -j MASQUERADE