iptables rules modified to solve clamp-pmtu problem

packages/qmp-small-node/files/etc/uci-defaults/qmp_clamp_tcpmss

@@ -4,5 +4,5 @@ if cat /etc/firewall.user | grep -e "^# Clamp MSS TCP rule to fix MTU problems";
 
 cat << EOF >> /etc/firewall.user
 # Clamp MSS TCP rule to fix MTU problems
-iptables -A FORWARD -p tcp -i br-lan ! -d 10.0.0.0/8  -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
+iptables -A FORWARD -p tcp -o bmx6_+ -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
 EOF

packages/qmp-small-node/files/etc/uci-defaults/qmp_masquerade_options

+#!/bin/sh
+
+if cat /etc/firewall.user | grep -e "^# QMP Masquerade options"; then exit 0; fi
+
+cat << QMP >> /etc/firewall.user
+# QMP Masquerade options
+iptables -t nat -A POSTROUTING -s 172.16.0.0/12 ! -d 172.16.0.0/12 -j MASQUERADE
+iptables -t nat -A POSTROUTING -s 192.168.0.0/16 ! -d 192.168.0.0/16 -j MASQUERADE
+QMP

packages/qmp-small-node/files/etc/uci-defaults/qmp_splash_fw

-#!/bin/sh
-
-cat << QMP >> /etc/firewall.user
-iptables -t nat -A POSTROUTING -s 10.0.0.0/8 -d 10.0.0.0/8 -j RETURN
-iptables -t nat -A POSTROUTING -j MASQUERADE
-QMP