http://ftpfaudev4triw2vxiwzf4334e3mynz7osqgtozhbc77fixncqzbyoyd.onion/ripe.net/rfc/rfc8994.html
The data plane itself would not need to change, and it could continue to be IPv4 only. For such IPv4-only devices, IPv6 itself would be additional implementation footprint that is only required for the ACP. ¶ The protocol choices of the ACP are primarily based on wide use and support in networks and devices, well-understood security properties, and required scalability.