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typeof ip <saddr|daddr>(>0.9.4) for sets could do away with the requirement to have separate rules and sets for IPv4 and IPv6. With good oldipsetit was possible to create a set of sets (where the contained sets where IPv4 or IPv6 specific) and then update/insert elements to that "superset". It appears nftables is somewhat late learning that very useful trick, while otherwise it pretty much promises the ability to unify rules across IPv4 and IPv6.