In Alpine 3.18+, the 'iptables' package IS the nftables variant. iptables-nft is not a separate package anymore — just need to flip update-alternatives from iptables-legacy to iptables-nft.
In Alpine 3.18+, the 'iptables' package IS the nftables variant. iptables-nft is not a separate package anymore — just need to flip update-alternatives from iptables-legacy to iptables-nft.