Hi Vincent, Very nice blog article. Only a note that in the case of 464XLAT, the stateless NAT46 only happens if there is no DNS64 (in the host - self-synthesis - or in the network), so mainly only when using literals (for example ping 8.8.8.8 instead of ping dns.google.com). So in practice, this tends to be much less than 1% of the traffic. Instead in MAP-T it is 100% of the traffic.
Something that we always forget is that 50% is the IPv6 traffic without China. If we could count China IPv6 traffic, it will be already 65-70% right now. Regards, Jordi @jordipalet > El 18 jun 2026, a las 6:38, Vincent Bernat via NANOG <[email protected]> > escribió: > > On 2026-06-16 09:08, Lu Heng via NANOG wrote: > >> One observation is that IPv4 scarcity remains one of the few genuine >> scarcity mechanisms in the Internet industry. From an economic perspective, >> many stakeholders have incentives to continue operating within that >> framework rather than accelerate a transition that would largely eliminate >> it. > > I've worked for a cloud provider, a content provider, and an ISP. In all > cases, there was no interest in artificially keeping IPv4 only. Cloud > providers interest are aligned with their customers: if customers want IPv6, > you'll implement IPv6. Small and large ISPs need IPv6 because large NAT boxes > are expensive to maintain and IPv6 have nicer mechanisms to provide IPv4 than > NAT44 or NAT444. Content providers are enabling IPv6 to workaround broken NAT > boxes and avoid blocking N unrelated customers because they share the same > IPv4 address. Once an ISP has most of its customers on IPv6, their traffic > becomes mostly IPv6. > > Same discourse with a bit more details: > https://vincent.bernat.ch/en/blog/2024-why-ipv6 > > All this won't make IPv4 disappear, but IPv6 already transports most of the > Internet economy. Google stats show that more than half the users are on IPv6 > and any IPv6-enabled stats show that two thirds of the services in volume are > on IPv6. > > The only ones that have an economic interest in keeping IPv4 scarce are > people leasing and selling IPv4 (and you seem to be in this group). > _______________________________________________ > NANOG mailing list > https://lists.nanog.org/archives/list/[email protected]/message/SC5O36U633TO4QDRP5PN6GZRPLT6EFI6/ ********************************************** 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. _______________________________________________ NANOG mailing list https://lists.nanog.org/archives/list/[email protected]/message/Z3DGTSDHOVZZQ6EGTZP3ZT3ADCBNOJYL/
