#!/bin/bash
function drop_unused_chains() {
#1 = table
dropped=1
while [ "$dropped" = "1" ]; do
    dropped=0
    for chain in `iptables -t $1 -nL | awk '/^Chain.*\(0 references\)/  { print $2; }'`; do
	iptables -t $1 -F $chain
	iptables -t $1 -X $chain
	dropped=1
    done
done
}

bgp_file=/var/local/ipclasses.bgp
if wget -q --output-document=$bgp_file http://metropolitana.loginet.ro/ipclasses-astral.bgp ; then
    iptables -t mangle -F mark_horiz_src
    iptables -t mangle -F mark_horiz_dst
    drop_unused_chains mangle
    mipclasses -s mark_horiz_src -d mark_horiz_dst -m 1 < $bgp_file
fi