What are the general functionalities of net/ipv4/tunnel4.c and net/ipv4/ipip.c? Are these modules necessary and compulsory to implement IPsec by Linux kernel? I mean if I do not load them I can not make IPsec , layer 3 between two points of a network? ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html