做了内核2.6.21的ipt

就是下面这个文件了。

/*
This is a module which is used for resending packets with inverted src and dst.
Based on code from: ip_nat_dumb.c,v 1.9 1999/08/20
and various sources.
Copyright (C) 2000 Emmanuel Roger <winfield@freegates.be>
Changes:
25 Aug 2001 Harald Welte <laforge@gnumonks.org>
- decrement and check TTL if not called from FORWARD hook
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#ifdef CONFIG_NF_NAT_NEEDED
#include
#else
#include
#endif