#!/bin/sh
gcc ip6t.c -o ip6t

./ip6t&
sudo ip6tables -t nat -I OUTPUT -d 2001::1 -p tcp -j REDIRECT --to-ports 1111
nc 2001::1 11111 -vN

sleep 1
sudo ip6tables -t nat -D OUTPUT -d 2001::1 -p tcp -j REDIRECT --to-ports 1111