> 4. Firewalls require two sets of independent entries for the same service. Depends on the exact rule you're writing, but nftables can remove a lot of duplica

> 4. Firewalls require two sets of independent entries for the same service. Depends on the exact rule you're writing, but nftables can remove a lot of duplication. Many rules cover both IPv4 and IPv6. It's the default since Debian 11.