@Simone35 

Hi,

It is certainly debatable whether TP-Link's decision to design their routers to resolve IP address conflicts on their own without user intervention is a good thing or a bad thing.

As it is, the only way to prevent a TP-Link router from automatically changing its own LAN IP address is to not allow an IP address conflict to happen in the first place.

So, you need to ensure that the WAN side (circled orange in the picture below) is never being assigned any addresses that fall into the same subnet as defined on the LAN side (circled blue).

  @woozle Thanks, I learnt it at my own expense, after many hours of debugging. What grinds my gears is the fact that it simply reset without giving you a warning or a message, and if you got a network with fixed ips and gateway, you get kicked out on EVERY device :)

  @Simone35 This is frustrating—I was just trying to open a taper fade haircut website for some style ideas, and it wouldn’t load at all. I think the router changing the LAN address or VPN settings might be causing the issue. Anyone else face something like this?

  @woozle