Internet Engineering Task Force (IETF), Morton, A., Fabini, J., Elkins, N., Ackermann, M., & Hegde, V. (2018, November). RFC 8468: IPv4, IPv6, and IPv4-IPv6 Coexistence: Updates for the IP Performance Metrics (IPPM) Framework (RFC 8468). Internet Engineering Task Force (IETF) RFC Editor. https://doi.org/10.17487/RFC8468