It is simple, most of your traffic will use IPv6. Depending on your network/customer base 65-85%. You need less and less IPv4 addresses in the NAT64, less NAT64 boxes. Less resources to operate IPv6-only vs dual-stack. And because the IPv6 traffic is going up more and more with the time, you can keep reducing IPv4 addresses and NAT64 boxes. If you are using boxes that can be used for other functionalities, you even "recover" part of you initial investment. El 6/9/21 10:06, "Saku Ytti" <saku@ytti.fi> escribió: On Mon, 6 Sept 2021 at 10:48, JORDI PALET MARTINEZ via NANOG <nanog@nanog.org> wrote: > Reduced Capex and Opex in general. Can you show the work? -- ++ytti ********************************************** IPv4 is over Are you ready for the new Internet ? http://www.theipv6company.com The IPv6 Company This electronic message contains information which may be privileged or confidential. The information is intended to be for the exclusive use of the individual(s) named above and further non-explicilty authorized disclosure, copying, distribution or use of the contents of this information, even if partially, including attached files, is strictly prohibited and will be considered a criminal offense. If you are not the intended recipient be aware that any disclosure, copying, distribution or use of the contents of this information, even if partially, including attached files, is strictly prohibited, will be considered a criminal offense, so you must reply to the original sender to inform about this communication and delete it.