No, this doesn't work The point your're missing (when I talked before about putting all the costs to make a good calculation of each case and then replacing CPEs become actually cheaper) is that you need more IPv4 addresses in CGN than in NAT64 and further to that, in CGN, your IPv4 pools sooner or later become blocked by PSN (unless you don't have gammers among your customers). El 25/8/20 22:42, "NANOG en nombre de Brian Johnson" <nanog-bounces+jordi.palet=consulintel.es@nanog.org en nombre de brian.johnson@netgeek.us> escribió: I usually solve this problem by designing for NAT444 and dual-stack. This solves both problems and allows for users to migrate as they are able/need to. If you try and force the change, you will loose users. > On Aug 25, 2020, at 3:15 PM, Brandon Martin <lists.nanog@monmotha.net> wrote: > > On 8/25/20 3:38 PM, JORDI PALET MARTINEZ via NANOG wrote: >> This is very common in many countries and not related to IPv6, but because many operators have special configs or features in the CPEs they provide. > > I really, really hate to force users to use my network edge router (I provide the ONT, though, and I provide an edge router that works and most users do take it), but it can be tough to ensure users have something that supports all the right modern features and can be configured via standard means. > > It would be nice if the consumer router industry could get its collective act together and at least come up with some easy-ish to understand feature support table that customers can match up with their service provider's list of needs. The status quo of a list of devices that work right (which is of course often staggeringly short if you're doing any of these modern transition mechanisms) that needs constant updating and may not be easily available is not ideal. > > Heck just having a real, complete list of supported features on the model support page on their website would be an improvement... > -- > Brandon Martin ********************************************** 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.