Public IPv4-over-IPv6 Access Network

Metadata

Publisher: IETF
Doc Type: Informational
Pages: 13
Abstract: This document describes a mechanism called Public 4over6, which is designed to provide IPv4 Internet connectivity over an IPv6 access network using global IPv4 addresses. Public 4over6 was developed in the IETF and is in use in some existing deployments but is not recommended for new deployments. Future deployments of similar scenarios should use Lightweight 4over6. Public 4over6 follows the Hub and Spoke softwire model and uses an IPv4-in-IPv6 tunnel to forward IPv4 packets over an IPv6 access network. The bidirectionality of the IPv4 communication is achieved by explicitly allocating global non-shared IPv4 addresses to end users and by maintaining IPv4-IPv6 address binding on the border relay. Public 4over6 aims to provide uninterrupted IPv4 services to users, like Internet Content Providers (ICPs), etc., while an operator makes the access network transition to an IPv6-only access network.
Publication Date: 2013-11-01
Status Note: Informational
DOI: 10.17487/RFC7040
Link: https://doi.org/10.17487/RFC7040
Author(s): Yong Cui
Jianping Wu
Peng Wu
Olivier Vautrin
Yiu Lee
Keyword(s): 4over6, IPv4 Over IPv6, Access Network, DHCP 4o6, IPv6 Tunnel, IPv6 Transition

Latest version of IETF RFC 7040

Document Versions — IETF RFC 7040

▶ IETF RFC 7040 (2013-11-01)

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Normative Reference(s)

IETF RFC 2473 [Active*]
IETF RFC 4925 [Active*]
IETF RFC 6333 [Active*]
IETF RFC 6334 [Active*]

Bibliographic Reference(s)

Boucadair, M., Farrer, I., Perreault, S., Ed., and S. Sivakumar, Ed., "Unified IPv4-in-IPv6 Softwire CPE", Work in Progress, May 2013. EXTERNAL
Cui, Y., Wu, P., Wu, J., Lemon, T., and Q. Sun, "DHCPv4 over IPv6 Transport", Work in Progress, October 2013. EXTERNAL
Cui, Y., Sun, Q., Boucadair, M., Tsou, T., Lee, Y., and I. Farrer, "Lightweight 4over6: An Extension to the DS-Lite Architecture", Work in Progress, November 2013. EXTERNAL

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IETF RFC 7040, Public IPv4-over-IPv6 Access Network. Available at https://doi.org/10.17487/RFC7040

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IETF RFC 7040, Public IPv4-over-IPv6 Access Network. Available at https://doi.org/10.17487/RFC7040

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IETF RFC 7040, Public IPv4-over-IPv6 Access Network. Available at https://doi.org/10.17487/RFC7040

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<span class="citation"><cite>IETF RFC 7040</cite>, Public IPv4-over-IPv6 Access Network. Available at <a href="https://doi.org/10.17487/RFC7040" target="_blank" rel="noopener">https://doi.org/10.17487/RFC7040</a></span>

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IETF RFC 7040, Public IPv4-over-IPv6 Access Network
doi: 10.17487/RFC7040
url: https://doi.org/10.17487/RFC7040

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Referenced By

IETF RFC 7596 [Active*]