The old iptables-nft package name is replaced by iptables, and the legacy backend is available as iptables-legacy. When switching packages (among iptables-nft, iptables, iptables-legacy), check for .pacsave files in /etc/iptables/ and restore your rules if needed: - /etc/iptables/iptables.rules.pacsave - /etc/iptables/ip6tables.rules.pacsave Most setups should work unchanged, but users relying on uncommon xtables extensions or legacy-only behavior should test carefully and use iptables-legacy if required. URL: https://archlinux.org/news/iptables-now-defaults-to-the-nft-backend/