#!/bin/sh

tun_iface=tun0
rtable_id_ingress=100
rtable_id_egress=101

echo 1 > /proc/sys/net/ipv4/ip_forward
echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
sysctl -w net.ipv4.conf.default.rp_filter=0

ethtool -K p7p1 lro off
ethtool -K p7p1 tso off
ethtool -K p7p1 gro off

ethtool -K em2 lro off
ethtool -K em2 tso off
ethtool -K em2 gro off

# Create TUN devices
ip tuntap add dev ${tun_iface} mode tun multi_queue
ifconfig ${tun_iface} up

# Ingress
ip rule add iif ${tun_iface} tab ${rtable_id_ingress}
ip route add local 0.0.0.0/0 dev lo table ${rtable_id_ingress}

# Egress
ip rule add fwmark 0x65 lookup ${rtable_id_egress}
ip route add default dev ${tun_iface} table ${rtable_id_egress}

# Flush cache
ip route flush cache