Can multi WAN load balancing cause pictures be not showing?
I have multi WAN router with two ISPs on the same tiers. So, they should be on round-robin load balance.
I noticed various glitches, for example, some images are not displaying (including images from this forum including this topic: https://forum.pfsense.org/index.php?topic=60977.0. First posts are full of images here.
I suspect that this problem is due to round robin, because browser does several requests to obtain page with pictures.
Is this possible that web server does not give pictures if they are requested from different client IP than the containing web page?
How often does this happen?
How to overcome this? For example, is it possible to improve round robin algorithm so that it stuck to specific WAN for the same server IP for some time?