%% You should probably cite draft-ietf-v6ops-framework-md-ipv6only-underlay-25 instead of this revision. @techreport{ietf-v6ops-framework-md-ipv6only-underlay-12, number = {draft-ietf-v6ops-framework-md-ipv6only-underlay-12}, 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-v6ops-framework-md-ipv6only-underlay/12/}, author = {Chongfeng Xie and Chenhao Ma and Xing Li and Gyan Mishra and Thomas Graf}, title = {{Framework of Multi-domain IPv6-only Underlay Network and IPv4-as-a-Service}}, pagetotal = 22, year = , month = , day = , abstract = {For the IPv6 transition, IPv6-only is considered as the final stage, where only IPv6 protocol is used for transport while maintaining global reachability for both IPv6 and IPv4 services. This document illustrates a framework of multi-domain IPv6-only underlay network from an operator's perspective. In particular, it proposes stateless address mapping as the base for enabling IPv4 service data transmission in an multi-domain IPv6-only environment(i.e.,IPv4-as- a-Service). It describes the methodology of stateless IPv4/IPv6 mapping, illustrates the behaviors of network devices, analyzes the options of IPv6 mapping prefix allocation, examines the utilization of SRv6, and discusses the security considerations.}, }