Hi all I am finding a field inside IP header that I can steal for the purpose of custom routing. All the routers are Linux-based. I guess there are somebody out there do this before. If yes, then which field do you use? Assuming that there is no fragmentation occurring throughout the whole network, can I use identification field? That is, I modify it for my own purpose? Thanks for your attention. Regards, philip - : 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