Abstract
From the draft I-D:
This document requests the allocation of a new IPv4 special-purpose address from the IANA IPv4 Special-Purpose Address Registry. The proposed address, 192.0.0.11/32, is intended to serve as a signal to IPv4 hosts in IPv6-only networks that the link-layer resolution for the default gateway should be derived from the IPv6 default gateway learned via IPv6 Router Advertisements and Neighbor Discovery.
This approach enables IPv4 communication without requiring IPv4 subnets or the use of ARP. It maintains backward compatibility with existing IPv4 host software that expects a default gateway IP address, while avoiding the need to implement legacy link-layer protocols.
Importantly, this method does not require tunneling or translation. IPv4 packets remain fully native and unaltered, which simplifies deployment and ensures minimal disruption across existing infrastructure. While it's unlikely that any modern host or gateway would be unable to process a native IPv4 packet, that doesn’t mean we cannot evolve the internal mechanics of next-hop resolution.
Recording
Speaker
Remco van Mook
Technology executive with a passion for Internet and how the pieces come together - going down that rabbit hole for 25+ years. Prolific policy author, former chair of the Connect working group in the RIPE community and board member of RIPE NCC from 2010 until 2025.
Rate this talk
You must be logged-in to rate talks