I agree, it's hard to see what real world use case would benefit from dumping UDP/IP while holding on to Ethernet, and not moving over to an Infiniband or simil

I agree, it's hard to see what real world use case would benefit from dumping UDP/IP while holding on to Ethernet, and not moving over to an Infiniband or similar solution. That also can't be satisfied by one of the existing specialized solutions that another user mentioned, such as EtherCAT.