For those referring nftables, there’s a LOT of stuff in iptables that doesn't work in nftables: from simple things like xt_time to complex ones like xt_TPROXY.

For those referring nftables, there’s a LOT of stuff in iptables that doesn't work in nftables: from simple things like xt_time to complex ones like xt_TPROXY. so nftables isn't a viable replacement for iptables just yet. In theory there's a compat layer in nftables to get around those, but I have never able to successfully build a binary that works.