ESPHome - HA does not see it in ESPHome-Tab, but it is pingable from the terminal

Hi all
I decided to secure my network. I therefor created a new IoT-WLAN and IoT-LAN and separated them into a VLAN.

I think I set up all necessary Firewall rules for HA to communicate to ESPHome and vice versa.

I set the new WLAN credentials and uploaded them to the ESPHome device.

I can see the ESPHome device in my ubiquitis clients list.

Homeassistant however keeps saying that the device is offline. I can ping it with IP and hostname from HAs Terminal however, so from my undestanding there is no reason from a network perspective that HA says the device is offline…

Thans for any suggestions.

Kind Regards

Pete

Solved - removing and re-adding the integration did the trick. Obviously HA stores some data and never flushes it, which leads to problems when the IP changes…

This did the trick in terms of that the chart is working again.

It is still listed as offline, and I think I see why. It is trying to connect by hostname with the suffix .local, which is not working - it would work without this suffix. Where does .local come from and how can I get rid of it?

I activated mDNS not everything is working again