[Update: Solution] TP-Link MR6400: internet only works over Wifi, no wired internet connection? Some webpages and programs load, some do not? A solution!
I recently bought the TP-Link garbage router MR6400. Everything worked fine, as I only browsed the internet on my phone over Wifi. I then realized that my connected Philips Hue had no internet connection and a LAN-connected PC also did not get internet. I also yould not access the router (via 192.168.1.1) from a LAN device. The firmware (december 2020) says up to date, version 1.1.0 0.9.1 v0001.0 Build 200511 Rel.43036n The provided solution from TP-Link says: enter a new DNS (8.8.8.8, 8.8.4.4) which actually changed nothing, as expected. Also the provided information that your IPv4 IP-Address must show 0.0.0.0 (see TP-Link page here ) is garbage! I write this post and my IP is 192.168.1.1, so the same that I use to connect to the router. The solution: plug off the router, plug in all LAN devices, take out the sim card, plug in the router, wait for 1 minute, then plug in the sim card after the boot procedure . Voila. My pC and my Hue get internet this way. I guess it's a fir...