23.05.0 Update breaks WAN - RT-AX53U/1800U

[linuxuser]

If you do not need WAN in any case, I recommend to use 23.05.2. Beamforming works a lot better then, as I found out here:

ASUS RT-AX53U: Beamforming configuration

Interesting thing. I was on 22.03.6 because of mentioned WAN-problems, but for the moment I do not need WAN. So I tried 23.05.2 root@AX53U-S1:~# ubus call system board { "kernel": "5.15.137", "hostname": "AX53U-S1", "system": "MediaTek MT7621 ver:1 eco:3", "model": "ASUS RT-AX53U", "board_name": "asus,rt-ax53u", "rootfs_type": "squashfs", "release": { "distribution": "OpenWrt", "version": "23.05.2", "revision": "r23630-842932a63d", "target": "ramips/mt7621", "description": "Ope…