There are many good reasons for IPv6 nat. Security is not one of them at all. There is no security gained from IPv6 nat, in fact some may even be lost. I think

There are many good reasons for IPv6 nat. Security is not one of them at all. There is no security gained from IPv6 nat, in fact some may even be lost. I think this page has a bunch of good examples on when IPv6 nat is useful: https://openwrt.org/docs/guide-user/network/ipv6/ipv6.nat6 https://openwrt.org/docs/guide-user/network/ipv6/ipv6.nat6 For why NAT doesn't actually add to security this is a decent article: https://www.internetsociety.org/blog/2015/01/ipv6-security-myth-3-no-ipv6-nat-means-less-security/ https://www.internetsociety.org/blog/2015/01/ipv6-security-m...