From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gervasio Bernal Subject: How to avoid fragmentation Date: Mon, 24 Oct 2005 20:15:41 +0000 Message-ID: <435D40ED.1080109@speedy.com.ar> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7BIT Return-path: To: netfilter-devel@lists.netfilter.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: netfilter-devel-bounces@lists.netfilter.org Errors-To: netfilter-devel-bounces@lists.netfilter.org List-Id: netfilter-devel.vger.kernel.org Hi all!! I'm developing a new target extension and I need to add some extra data and headers in TCP/UDP packets. But I'm having a problem: fragmentation. In the header developed by me I add a new checksum field to verify the integrity of that header. This works fine while there is no fragmentation. If the packet is fragmented I can't recalculate that checksum. Does someone know how to correct or avoid this? Or have experience with fragmentation? Thanks a lot!