Hi Markus, Maybe you didnt look properly, you can find ip_send() at the given path /usr/src/linux.x.x/include/net/ip.h Its defined there as a static inline function returning int. HTH Amit "Markus Zeilinger" <mz@xxxxxxxxxxxxxxxxxx>@lists.netfilter.org on 05/13/2004 05:26:03 PM Please respond to <mz@xxxxxxxxxxxxxxxxxx> Sent by: netfilter-admin@xxxxxxxxxxxxxxxxxxx To: "netfilter" <netfilter@xxxxxxxxxxxxxxxxxxx> cc: Subject: ip_send() function Dear all, I am currently writing a paper for my studies about netfilter and Linux Firewalling. In this case I also write a chapter about packet handling through the Linux network stack. Several papers and also in Harald Welte's "The journey of a packet through the linux 2.4 network stack" mention a function ip_send() in the process of packet forwarding. According to Harald this function is defined in /include/net/ip.h. But I cannot find a definition there, and surprisingly I was not able to find the ip_send() function anywhere in the kernel source. I searched through Kernel 2.6.6, 2.4.6 and 2.4.0 but did not find any tracks of a ip_send() function!?! Can you help me with this problem? Sorry if this is a stupid question, but I am a newbie in Linux networking. ;-) Thx a lot for your assistence! best regards, Markus ------------------------------------------------ Markus Zeilinger Institute for Systems Engineering and Automation University of Linz Altenberger Strasse 69 A-4040 Linz, AUSTRIA Tel.: +43-(0)732-2468-8869 Fax: +43-(0)732-2468-8878 Mail: mz@xxxxxxxxxxxxxxxxxx