#!/bin/sh

zt0=$(ifconfig | grep zt | awk '{print $1}')
if [ "$zt0" = "" ]; then
  zt0=$(cat /tmp/cat /tmp/zt.nif)
fi
echo "zt interface $zt0 is stopped!"
iptables -D FORWARD -i $zt0 -j ACCEPT 2>/dev/null
iptables -D FORWARD -o $zt0 -j ACCEPT 2>/dev/null
iptables -t nat -D POSTROUTING -o $zt0 -j MASQUERADE 2>/dev/null
ip_segment=$(ip route | grep "dev $zt0 proto" | awk '{print $1}')
iptables -t nat -D POSTROUTING -s $ip_segment -j MASQUERADE 2>/dev/null