It would maybe be okay at the router to break some things, but ffs even in software I have to choose? Why do I need both ping and ping6 this is stupid!! They really screwed up by making it a breaking change to the OS and not just internet routing.
They didn't screw up. They made it a breaking change to OSs because it had to be a breaking change to OSs. If anyone screwed up here, it was the people who made v4, not the ones that made v6.
For ping, I think it originally had different binaries because ICMPv4 and ICMPv6 are different protocols, but Linux has had a dual-stack `ping` binary for a very long time now. You can just use `ping` for either address family.
