I have tried playing around with reply_header_access and request_header_access, and looking for other options having to do with "ims" or "revalid" but have not had any luck finding an option to ignore If-Modified-Since headers in requests from clients. Is there a way to do it? Alternatively it would work for me to ignore Last-Modified headers from the upstream server. The reason I am asking is for a squid instance using rock cache where I want to make sure that this bug (or I guess you could call it a feature since it is documented behavior) related to collapsed forwarding is avoided: https://bugs.squid-cache.org/show_bug.cgi?id=4890 Collapsed forwarding is very important for my applications but in this case If-Modified-Since is not important. Thanks, Dave _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users