I have an old TP-Link TL-WR741N/ND v4 already running OperWRT OpenWrt 18.06.8 r7989-82fbd85747 / LuCI openwrt-18.06 branch (git-20.029.49294-41e2258).
Now i got a TP-Link Archer C50 and installed OpenWrt 19.07.2 r10947-65030d81f3 / LuCI openwrt-19.07 branch git-20.057.55219-13dd17f. But i cannot change LAN IP through Luci. After click on apply, it says no comunication and rollsback. And never finish the roll back, so, i don't get the options "apply unchecked", but if you try the old IP after some time, is works. So i changed the IP via SSH directly at /etc/config/network
Looks like this post, but i didn't got a fix.
I tried it also by plugging the cabe just between PC and the router. Same problem.
This is not a big issue since it's rare to chenge the LAN IP, but it's still a issue. Or am i doing wrong?
LAN and WAN are not on the same subnet (WAN is PPPoE).
After i apply new LAN IP, even if i set the new subnet at PC, it still do not ping new LAN IP even once.
Had checked some threads but the only solution is to edit /etc/config/network.