watch -d nft -a list ruleset

nft flush ruleset

nft -ia
add table inet filter
add chain inet filter input { type filter hook input priority 0; policy accept; }
add chain inet filter forward { type filter hook forward priority 0; policy accept; }
add chain inet filter output { type filter hook output priority 0; policy accept; }

nftables.conf

table inet filter {
        chain input {
                type filter hook input priority 0; policy accept;
        }
        chain forward {
                type filter hook forward priority 0; policy accept;
        }
        chain output {
                type filter hook output priority 0; policy accept;
        }
}

nft -f nftables.conf

¹⁾

https://wiki.nftables.org/wiki-nftables/index.php/Quick_reference-nftables_in_10_minutes