@techreport{dong-spring-sr-4map6-segments-05, number = {draft-dong-spring-sr-4map6-segments-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-dong-spring-sr-4map6-segments/05/}, author = {Guozhen Dong and Chongfeng Xie and Xing Li and Shuping Peng and Eduard Metz}, title = {{4map6 Segments for IPv4 Service delivery over IPv6-only underlay networks}}, pagetotal = 9, year = 2025, month = nov, day = 2, abstract = {This document defines a new type of segment for Segment Routing, 4map6 segment, along with its corresponding End.4map6 endpoint behavior. This behavior performs stateless IPv4/IPv6 translation or encapsulation at PE nodes based on stateless mapping rules, thereby enabling the delivery of IPv4 services over an IPv6-only network. At the same time, the BGP Prefix-SID attribute SRv6 Service TLVs is extended to transmit IPv4/IPv6 address mapping rules in IPv6-only domain and cross-domain.}, }