I believe this is operational content, but may well be better asked somewhere else. I would love to have a pointer to another list/website. I am looking to do some policy routing based on DSCP marking, and I have this all working inside the networking equipment. I DSCP mark some packets at ingress and I policy-route others based on ACL's matching those DSCP markings. This should allow me to solve some problems in a rather elegant manner, if I do say so myself. And this works fine for some things- I have verified that Ping's to a host work as expected- the Ping shows up at the destination host DSCP marked, and the ICMP reply leaves with the same DSCP marking. However, when I do this with apache and mysql connections (TCP 80/3306), the incoming packets are marked, but the replies are not. My research into the subject doesn't seem to suggest there is a standard for whether replies to a TCP connection are required to have the same DSCP marking, but it seems to make a lot of sense that they would. I've disabled iptables on the server host to no avail. I've looked around for an apache or Linux kernel setting and found nothing. At this point I'm looking for pointers- to a way to solve this issue, or to a better place to ask. I've started investigating writing iptables rules to match incoming connections that have DSCP marking and explicitly mark response traffic, but that seems, I don't know... wrong. Linux kernel we are using is 2.6.9-67.ELsmp. Any help or pointers would be appreciated! --D -- -- Darren Bolding -- -- darren@bolding.org --