I have bought and received a EIB KNX IP Interface PoE from Eibmarkt. Removed the “old” ip interface from Merten and installed and configured the new one. And openhab is running again (in tunnel mode).
Only the Merten touchscreen is not working. Is shows online and offline intermittent.
I will dig into that later on. Happy that it is working now.
Thanks for all the help.
