iptables -D forwarding_rule -i pppoe+ -j RETURN 2>/dev/null
iptables -D forwarding_rule -o pppoe+ -j RETURN 2>/dev/null
iptables -D forwarding_rule -i ppp+ -m conntrack --ctstate NEW -j ACCEPT 2>/dev/null
iptables -D forwarding_rule -o ppp+ -m conntrack --ctstate NEW -j ACCEPT 2>/dev/null

iptables -A forwarding_rule -i pppoe+ -j RETURN
iptables -A forwarding_rule -o pppoe+ -j RETURN
iptables -A forwarding_rule -i ppp+ -m conntrack --ctstate NEW  -j ACCEPT
iptables -A forwarding_rule -o ppp+ -m conntrack --ctstate NEW -j ACCEPT

echo 1 > /proc/sys/net/ipv4/conf/br-lan/proxy_arp