I’ve been using an asus router as an access point for a while, and I made a script that runs at startup for configuring VLANs on it.
https://virtualize.link/asus-vlans/
There’s also an indication of VLANs coming to both the asus firmware and asus-merlin on v3006.
https://www.snbforums.com/threads/announcement-3006-progress-report-its-a-go.89854/
Thought it might be useful to @wendell or others.
Edit: Sorry for the links, I wasn’t able to post them otherwise as a new member.