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Comment by throw0101c

3 days ago

> I don't understand why you can't have any protocol that can (potentially recursively) resolve to a layer 2 address as a next hop.

Which Layer 2? Ethernet? Token Ring? Infiniband? ATM? Fibre Channel?

Both IPv4 and IPv6 were created when there were multiple Layer 2 protocols in use. That's why where was a completely different protocol to handle Layer 2 to 3 mappings (often itself referred to as a Layer "2.5" one):

* https://en.wikipedia.org/wiki/Address_Resolution_Protocol

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