@Alex789 my exploration reached the same conclusion, that everything is stateless. that is quite a bummer really.

@Virgo thanks i noticed that the wan ip is used. that is not what i need unfortunately. I need packets from 192.168.1.1/32 snat to $LANFACINGIP

I want to know how I can add SNAT rules using the omada controller, it does not seem to be possible I want packets with source address 192.168.1.0/24 to leave with the address of one of the lan...

@3287bluehawk also tell us if all the involved ethernet links are negotiating at gigabit speed and that you are absolutely sure you are not exceeding cable lengths somewhere.

@dsj In fact I would even put my money on most of that upstream cabling beign wrong.

@3287bluehawk . "It's a cable that has a coupler on it which I connect one end of an ethernet cable to and the other to the router." care to share a picture of that whole concoction ?