#!/bin/sh
#
IFACE1=eth0
IP1=201.57.53.2
GW1=201.57.53.1
LAN1=201.57.53.0/24

IFACE2=eth0
IP2=201.45.43.2
GW2=201.45.43.1
LAN2=201.45.43.0/24

routes_start()
{
ip rule add from ${IP1} table link1

ip route add 127.0.0.0/8 dev lo table link1
ip route add ${LAN1} dev ${IFACE1} src ${IP1} link1
ip route add default via ${GW1} dev ${IFACE_LINK1} table link1
ip rule add fwmark 1 table link1 prio 10

ip rule add from ${IP2} table link2

ip route add 127.0.0.0/8 dev lo table link2
ip route add ${LAN2} dev ${IFACE1} src ${IP2} link2
ip route add default via ${GW2} dev ${IFACE_LINK2} table link2
ip rule add fwmark 2 table link2 prio 20

ip route flush cache

}

routes_stop()
{
ip rule del from ${IP1} table link1

ip route del 127.0.0.0/8 dev lo table link1
ip route del ${LAN1} dev ${IFACE1} src ${IP1} link1
ip route del default via ${GW1} dev ${IFACE_LINK1} table link1
ip rule del fwmark 1 table link1 prio 10

ip rule del from ${IP2} table link2

ip route del 127.0.0.0/8 dev lo table link2
ip route del ${LAN2} dev ${IFACE2} src ${IP2} link2
ip route del default via ${GW2} dev ${IFACE_LINK2} table link2
ip rule del fwmark 2 table link1 prio 20

ip route flush cache

}

case "$1" in
'start')
  routes_start
  ;;
'stop')
  routes_stop
  ;;
'restart')
  routes_stop
  sleep 2
  routes_start
  ;;
*)
  echo "usage $0 start|stop|restart"
esac