Parabola GNU/Linux-libre: iptables-legacy
From Arch:
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.
Source: Planet GNU