%% You should probably cite rfc9229 instead of this I-D. @techreport{ietf-babel-v4viav6-05, number = {draft-ietf-babel-v4viav6-05}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-babel-v4viav6/05/}, author = {Juliusz Chroboczek}, title = {{IPv4 routes with an IPv6 next hop in the Babel routing protocol}}, pagetotal = 10, year = , month = , day = , abstract = {This document defines an extension to the Babel routing protocol that allows annoncing 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.}, }