my mess

#!/bin/bash

### Setup Routing Table ###


/sbin/ip route flush cache

/sbin/ip route flush table 70

/sbin/ip route add table 70 to 172.24.38.0/24 dev eth0
/sbin/ip route add table 70 to default via 172.24.38.3 dev eth0

/sbin/ip rule add from 172.24.38.0/24 table 70 priority 70

/sbin/ip route flush cache


### Required iptables rules for transparent proxy ###

_input=/etc/squid3/proxy_exception
IPT=/sbin/iptables

$IPT -F
$IPT -X
$IPT -t nat -F
$IPT -t nat -X BYPASS
$IPT -t mangle -F
$IPT -t nat -N BYPASS

[ ! -f "$_input" ] && { echo "$0: File $_input not found."; exit 1; }

egrep -v "^#|^$" $_input | while IFS= read -r ip
do
$IPT -t nat -A BYPASS -p tcp --dport 80 -d $ip -j ACCEPT
done <"$_input"

$IPT -t nat -A PREROUTING -p tcp --dport 80 -j BYPASS
$IPT -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 3128
#$IPT -t nat -A PREROUTING -p tcp --dport 443 -j BYPASS