Hi all, /me could not find definitive statements on the behaviour of rp_filter. Kernel documentation, runtime observations and common pratice in distros do not match. Formal question: valid values? Documentation/networking/ip-sysctl.txt reports only boolean range - i can clearly remember doc fragments in google listing '2' for stricter checkings. Default value? Above-mentioned probably outdated docs say '1' - observing /proc tells a different story. Black magic - if i turn on ip_forward, is rp_filter then automagically active too? Keeping track of a running system's /proc dir did not reveal any indication of this. Sorry for my plumpy questions, best regards, Marcus - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html