Okay... it wasn't the MTU - that is already set to maximum of 1500.
We did take a different approach and used following command:
In order to get a report of what happened when over the wlan0 to try and find out what might cause the internet to stop running.
tcpdump -s 0 -i wlan0 -w /home/littlezeasel/tcp.dump
Unfortunately, me being an absolute Linux Noob, I can't tell anything from that protocol and the one helping me can't see anything wrong with the log file, apart from recognising WHERE the packages stopped.
I would like to post the relevant part of the protocol, but unfortunately it isn't a text file (it's a file opennable in Wireshark).
The entire thing is 22 MB large and thus not good to be posted - I basically just need the last few lines - anyone know how I can extract those from the file so I can share it, so maybe someone may be able to recognise what is wrong with my stuff?
Or maybe any other ideas?
Thanks a lot for all of your ideas - I am trying everything and am looking forward to a solution. Keep them coming, maybe one thing finally will stick