How do you use this patch? This way worked for me on windows: 1. Download git for windows (it contains the patch tool which you will need to apply the patch] 2. Run git-bash and execute these commands: cd $APPDATA/Factorio/mods unzip angelsbioprocessing_0.5.9.zip unix2dos ~/Downloads/0007-angelsbio...

If anyone has ideas on how to narrow down which hop is eating packets I would love to know. The IP TTL field is probably the way to go as others have mentioned. You could take a packet capture of the UDP packets you already have with the funny csums, then modify the IP TTL values on each packet so ...