TCP/IP is crap
Well Vint, you were one of the originals, you made up TCP/IP because it just worked.
But it's crap, and now it's cemented into the base of the internet infrastructure, it's there to stay.
It just works, but it does a bad job and allows a multitude of sins which are continuously patched over.
Sometimes a rethink and rebuild is the best answer, but rarely is it done.
mostly run by tech giants like Google – for who Cerf works – and who go to some lengths to make sure that they can be accessed by IPv4.
look, a great big IPV6 bandaid