Thanks!

Hi, yes, I have a Mosquitto container in another machine.

• HA can connect to the MQTT broker and I already have other MQTT devices working in HA, there’s also a Shelly RGBW2 that I can turn on and off via MQTT
• In the MQTT broker I see plenty of data from all the MQTT devices
• I thought that HA would recognize Shelly devices by their messages. I’ll give a look at the MQTT discovery, thanks.

I’ve mentioned ColoT because I’ve installed the Shelly integration from HASS (sorry, I’ve forgot to mention it, I’ll add it), but even there there are no devices discovered. I’m using it with mcast, I’ll try putting the HA IP. Thanks for the input, I’ll do some tests.

It’s a tagged network. The VLANs are setup in the OPNsense router and since HA is a VM, the VLAN is taken care by Proxmox that presents an untagged NIC to the VM.

is multicast DNS enabled and available in that VLAN?

In OPNsense there is no multicast DNS option to be enabled, but since the Shelly devices and HA are in the same VLAN, the router shouldn’t even come into play.

have you set up the network for HA using the ha network commands?

No, I didn’t, but in the HA in the “Configure network interfaces” section I see the 2 NICs with the 2 correct IPs. Should I do something else?

TL;DR?

Those seems nice products, but wow, they cost quite a lot!