It kind of exists in IPv4, but is a lot messier. Also, the lack of IPv4 addresses makes this a lot harder to do something like this in IPv4. https://datatracke

It kind of exists in IPv4, but is a lot messier. Also, the lack of IPv4 addresses makes this a lot harder to do something like this in IPv4. https://datatracker.ietf.org/doc/html/rfc6275 https://datatracker.ietf.org/doc/html/rfc6275