reload_into_ims

If you enable this directive, Squid adds an If-Modified-Since header to requests that contain a no-cache directive. This is a global version of the reload-into-ims option for the refresh_pattern directive (see Section 7.7).

Altering the client's request in this manner is a violation of HTTP.

reload_into_ims on|off

reload_into_ims off

reload_into_ims on