Fully agree. This is one of the biggest mistakes that was made in the early days of TCP/IP, with far reaching consequences (such as breaking multihoming, but also for instance increasing routing table sizes).
In Ouroboros (our recursive network implementation: https://ouroboros.rocks/), we only identify the interface once (MAC address). Addresses are contained within each recursive network layer, and identify a specific process at each layer (similar to how an IP address should actually identify the host).
In Ouroboros (our recursive network implementation: https://ouroboros.rocks/), we only identify the interface once (MAC address). Addresses are contained within each recursive network layer, and identify a specific process at each layer (similar to how an IP address should actually identify the host).