Hello All ... Nice to meet you ... Anyway, I am a graduate student in Korea ... I have a question about "new_tunnel.c" for IPIP Encapsulation tunnel on Linux ... I am using "new_tunnel" for Mobile IP ... I want to know about ~ When a packet is tunneled by tunnel interface, e.q tunl0 , I want to process that packet ... For example, I want to count the number of packets tunneled by tunl0 with less overhead .... I mean by "less overhead", "I do not want to check all packets received by my host and see through IP header of those packets for IP address of destination (e.q. by SOCK_PACKET) And If possible, I do not want to always check tunl0 to do it ...." Thanks in advance ... Any comments will be appreciated .... And Thanks a lot for your time ... Have a Great Day ~ -------------------------------------- Park, Hyun Seo Graduate Student Department of Computer Engineering, Chungnam National University 220 Gung-dong,YuSeong-Gu, Taejon, 305764, Korea E-mail: hspark@ce.cnu.ac.kr ICQ # : 28055093 Phone : +82-42-823-6049 :.˛mkabzwmb˛mb{ayʇڙ,jfhz_