Dear Squid users, I am currently creating a patch for Squid that offers the existing ZPH TOS functionality, but for netfilter marks. The patch will mark packets leaving Squid with a netfilter mark value, depending on whether they were retrieved from local cache or somewhere upstream. It will also retain the existing mark of the upstream connection (without needing to patch the kernel). I am looking for people to test the patch (in particular IPV6). If this is a feature that would be useful to you and you would be interested in testing it, then please let me know directly at andy@xxxxxxxxxxx Many thanks, Andy