We are trying to use signature 12621 subid 0 for filtering gif images on a website. Of course there are other ways to accomplish this, but we want to do it this way.
The problem is that it works fine the first time we make a request to the website. We use IE6 and when we press the F5 key, the images suddenly appears. Very strange.
We looked with ethereal and saw that the first time the gif image was blocked (ips setting: deny connection inline). After we press F5 the image is perfectly downloaded (the GET is allowed).
We changed nothing to the signature.
Anyone an idea why this is?
(we use IPS inline mode, version 6.0)