RFC 9928: DHCPv4 over DHCPv6 with Relay Agent Support

This document describes a mechanism for networks with legacy
IPv4-only clients to use services provided by DHCPv4 over DHCPv6 in a
Relay Agent. RFC 7341 specifies the use of DHCPv4 over DHCPv6 in the
client only. This document specifies an approach based on RFC 7341
that allows a Relay Agent to implement the DHCPv4-over-DHCPv6
encapsulation and decapsulation of DHCPv4 messages in DHCPv6 messages
on behalf of a DHCPv4 client.