http://wiki.nftables.org/wiki-nftables/index.php/Sets States this works and it does not. nft add set filter blackhole { type ipv4_address\;} after reviewing the source code I discovered this is correct: nft add set filter blackhole { type ipv4_addr\;} after using the correct syntax I get this error, which I have not troubleshooted. I modprobed all the modules starting with nft* one at a time. <cmdline>:1:26-42: Error: Could not add set: No such file or directory Jonathan -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html