Hi, I ran into the case, where I would need to update a set used in an ip table with info derived in a netdev table. Is that possible? I saw several posts in the archives about that topic and the last one mentioned that this feature might come to nft https://marc.info/?l=netfilter&m=160103596504378&w=2 I want to isolate my heating system from the rest of my network, but still make it accessible for the app on smart phones within the network. To initialize communication, the app sends an UDP broadcast (which I handle in the netdev table) and replies back to the sender with a normal UDP packet. So I need to dnat that reply packet in my firewall to the sender IP of the broadcast. I think that is a quite often used service discovery scenario. Can this be handled with nftables? Thanks, Beep