Hi, Any idea in which kernel version of Linux, skb_shared_info structure was added to keep the frag_list associated with an sk_buff (frag_list is used to keep the ip fragments received on the input side). This is there in 2.4.18-14. But I was going thru kernel version 2.4.2, here its not there and the way IP reassembly is handled is quite different. I wanted to know at what kernel version this particular change has happened. TIA, Deepanakar. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/