below is function tcp_v4_send_synack's comments. I think it should be "having received an SYN", am I right? /* * Send a SYN-ACK after having received an ACK. * This still operates on a open_request only, not on a big * socket. */ static int tcp_v4_send_synack(struct sock *sk, struct open_request *req, struct dst_entry *dst) { Thanks! Bao Zhao ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/