Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 14
Abstract: This document defines the P flag in the Prefix Information Option (PIO) of IPv6 Router Advertisements (RAs). The flag is used to indicate that the network prefers that clients use the deployment model in RFC 9663 instead of using individual addresses in the on-link prefix assigned using Stateless Address Autoconfiguration (SLAAC) or DHCPv6 address assignment. This document updates RFC 4862 to indicate that the Autonomous flag in a PIO needs to be ignored if the PIO has the P flag set. It also updates RFC 4861 to specify that the P flag indicates DHCPv6 prefix delegation support for clients.
Publication Date: 2025-06-01
Status Note: Proposed Standard
DOI: 10.17487/RFC9762
Link: https://doi.org/10.17487/RFC9762
Author(s): Lorenzo Colitti
Jen Linkova
Xiao Ma
David 'equinox' Lamparter
Keyword(s): IPv6, SLAAC, Prefix Delegation

Latest version of IETF RFC 9762

Document Versions — IETF RFC 9762

▶ IETF RFC 9762 (2025-06-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 4861 [Active*]
IETF RFC 4862 [Active*]
IETF RFC 6724 [Active*]
IETF RFC 8174 [Active*]
IETF RFC 8415 [Superseded*]
IETF RFC 8425 [Active*]

Bibliographic Reference(s)

IETF RFC 4193 [Active*]
RFC6105 — RFC6105 EXTERNAL
IETF RFC 6275 [Active*]
RFC7039 — RFC7039 EXTERNAL
RFC7084 — IPv6-CPE EXTERNAL
RFC7348 — RFC7348 EXTERNAL
RFC7610 — RFC7610 EXTERNAL
IETF RFC 8200 [Active*]
RFC9663 — RFC9663 EXTERNAL

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IETF RFC 9762, Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients. Available at https://doi.org/10.17487/RFC9762

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IETF RFC 9762, Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients. Available at https://doi.org/10.17487/RFC9762

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<span class="citation"><cite>IETF RFC 9762</cite>, Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients. Available at <a href="https://doi.org/10.17487/RFC9762" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9762</a></span>

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IETF RFC 9762, Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients
doi: 10.17487/RFC9762
url: https://doi.org/10.17487/RFC9762

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<li>
<cite id="bib-rfc9762">IETF RFC 9762</cite>, Using Router Advertisements to Signal the Availability of DHCPv6 Prefix Delegation to Clients
<span class="doi">10.17487/RFC9762</span>
</li>