Hi Karuna, On Thu, Mar 21, 2019 at 11:57:15AM +0530, Karuna Grewal wrote: > I'm trying to implement "deletion of set elements in ruleset". For > which I wanted to understand the way existing set operations are > implemented. What are you trying to achieve? Anonymous sets are immutable by design. If you want to add/delete set elements, you can create a named set and reference that from rules. See nftables wiki[1] for examples of usage. Cheers, Phil [1] https://wiki.nftables.org/wiki-nftables/index.php/Sets#Named_sets