[BingSwenSun]

OK. Now there is a compatible "next generation IPv4", nick name IPswen. For details, you may refer to this tweet?

https://twitter.com/BingSwenSun/status/1738513794933182671

What's notable is that IPswen is bidirectionally compatible with IPv4, meaning the two can interwork when the addresses are limited in the "Base Address Space" (the level 0 subspace of IPswen), much like the back and forward compatibility between color TV vs. black-and-white TV, or monophonic broadcasting vs. stereo broadcasting.

IPswen is a relatively new idea and still under development. As the history of networking and communications is replete with failures and technological disasters, it may be quite interesting to see how far it will actually go...