3 private links
Guest Post: How to easily enable IPv6 support for apps without it.
Sipcalc is an advanced ip calculator supporting both IPv4 and IPv6. - GitHub - sii/sipcalc: Sipcalc is an advanced ip calculator supporting both IPv4 and IPv6.
After some years of accelerating IPv6 deployment, we are now into a period of slower growth and it's not clear where we are heading. It is therefore interesting to try to predict the future of IPv6 over the coming years. At Ericsson Research, we have been working on this topic since 2013, but just recently created a forecast model that seems to be quite accurate. However, it gives a disappointing message of a very low final level of IPv6 deployment at less than 30%!
... If our model is correct, IPv6 will not replace IPv4 - or even be the dominant network protocol - in the foreseeable future!
other slide deck (seen on NANOG)
https://www.ietf.org/proceedings/101/slides/slides-101-v6ops-ipv6-only-hosting-00
see https://mailman.nanog.org/pipermail/nanog/2020-August/209022.html
"Is there currently a shortage of IPv4 addresses?"
answer from Fred Baker fredbaker.ietf at gmail.com Tue Aug 4 21:31:13 UTC 2020