it was indeed, thank you.
I found it to be a Mozilla-IOT plugin that was generating a lot of ARP boradcast requests on the network, saturating the A3 Ethernet stack until it crashed and looped.
ok now after a few days the unit isn’t even capable to connect to anything, it’s beeping in loop every 5min, I had to unplug it. there are 6 devices connected to this wifi access point, without any problems.
yes the signal is ok, odly enough it respond locally sometimes but if I browse the internal web page too quick (more than once in a time span of 2Min) it doesn’t respond anymore and then reboots (one beep). Is there a limit in a certain time frame at wich you can poll the page ?