RFC 9229 · EXPERIMENTAL · 2022
SUN · 14 JUN 2026
IPv4 Routes with an IPv6 Next Hop in the Babel Routing Protocol
Overview
RFC 9229, “IPv4 Routes with an IPv6 Next Hop in the Babel Routing Protocol”, is an Experimental document published in May 2022 by J. Chroboczek. The canonical text is published by the RFC Editor.
Abstract
This document defines an extension to the Babel routing protocol that allows announcing routes to an IPv4 prefix with an IPv6 next hop, which makes it possible for IPv4 traffic to flow through interfaces that have not been assigned an IPv4 address.
What “Experimental” means
Describes a specification that is part of a research or development effort, published so the community can gain experience with it.
Read this RFC
The canonical text of RFC 9229 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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