LocalTuya on Vlans?

I have a couple chinese devices that use the Tuya app/platform that i’ve successfully integrated into home assistant locally with the LocalTuya integration.

However, following best security/privacy practices I’ve started segmenting my network into vlans, leaving the default one as “privileged” and creating two other vlans (and wifi SSIDs) named IoT for devices that need to connect to the internet but shouldn’t talk with anyone else in the local network (except home assistant iself) and NoT for devices that should not talk with absolutely no one but home assistant, local or remote.

I added several devices but so far I wasn’t able to make add those devices to localtuya on either one of those vlans. Not even in the one that has access to the internet. I can control them using the cloud, so they do connect to the internet, but I can’t add them to local tuya even if I manually specify the IP/id/localid myself.

Has anyone succeeded on adding to localtuya devices on other vlans? And if you did, were you able to eventually disconnect those devices from the internet for good?

I was able to do it eventually. I’m not sure what was the cause, but I lifted all security on the vlans momentarily, added the device into localtuya, and then added back the firewall rules (namely, devices in the NoT vlan can’t talk with anyone but home assistant, and don’t have access to the internet).

It seems to work fine. I’ll give it some time because I heard some reports of tuya devices freezing if disconnected from the network for long.

Just came across this as I’ve been the same.
All my original local tuya devices go offline when I move HomeAssistant to a vlan. Omada.
Will set up a test HomeAssistant and test further but really not sure what else in the acl or firewall settings I can adjust