[SOLVED] Fritzbox 7530 cannot configure VLANs with Luci

[invisiblegoat]

I've installed OpenWrt 23.05.2 on my AVM Fritzbox 7530. I'm planning on using it as a router between my fibre internet connection and my LAN, so I want to set up VLANs on the LAN side.

I'm using DSA, and I've got port 1 set up as WAN, and ports 2-4 set up on my LAN bridge interface.

However when I try to apply a basic setting like below:

Luci just times out and tells me I need to revert. I've tried applying and it bricked my box so I had to reset it.

What am I missing?

[psherman]

Select the u* (Untagged + "Is primary VLAN") option whatever ports will be using VLAN 1.

Then go into the lan network interface and set it to use br-lan.1 instead of just br-lan.

This is often easier to achieve via the command line or direct editing of the config files in a text editor.