rfc9818v2.txt		rfc9818.txt
	skipping to change at line 14 ¶		skipping to change at line 14 ¶
	Updates: 7084 July 2025		Updates: 7084 July 2025
	Category: Informational		Category: Informational
	ISSN: 2070-1721		ISSN: 2070-1721
	DHCPv6 Prefix Delegation on IPv6 Customer Edge (CE) Routers in LANs		DHCPv6 Prefix Delegation on IPv6 Customer Edge (CE) Routers in LANs
	Abstract		Abstract
	This document defines requirements for IPv6 Customer Edge (CE)		This document defines requirements for IPv6 Customer Edge (CE)
	routers to support DHCPv6 Prefix Delegation for distributing		routers to support DHCPv6 Prefix Delegation for distributing
	available prefixes to LAN devices that were delegated to a IPv6 CE		available prefixes to LAN devices that were delegated to an IPv6 CE
	router. This document updates RFC 7084.		router. This document updates RFC 7084.
	Status of This Memo		Status of This Memo
	This document is not an Internet Standards Track specification; it is		This document is not an Internet Standards Track specification; it is
	published for informational purposes.		published for informational purposes.
	This document is a product of the Internet Engineering Task Force		This document is a product of the Internet Engineering Task Force
	(IETF). It represents the consensus of the IETF community. It has		(IETF). It represents the consensus of the IETF community. It has
	received public review and has been approved for publication by the		received public review and has been approved for publication by the
	skipping to change at line 204 ¶		skipping to change at line 204 ¶
	LPD-3: The prefix assigned to a link MUST NOT change in the absence		LPD-3: The prefix assigned to a link MUST NOT change in the absence
	of a local policy or a topology change.		of a local policy or a topology change.
	LPD-4: After LAN link prefix assignments, the IPv6 CE router MUST		LPD-4: After LAN link prefix assignments, the IPv6 CE router MUST
	keep the remaining IPv6 prefixes available to other routers		keep the remaining IPv6 prefixes available to other routers
	via Prefix Delegation.		via Prefix Delegation.
	LPD-5: IPv6 CE routers MUST maintain a local routing table that is		LPD-5: IPv6 CE routers MUST maintain a local routing table that is
	dynamically updated with leases and the associated next hops		dynamically updated with leases and the associated next hops
	as they are delegated to clients. Packets with destination		as they are delegated to clients. Absent explicit
	addresses in a delegated prefix MUST be routed to that		filtering, packets with destination addresses in a delegated
	prefix regardless of which interface they are received on.		prefix MUST be forwarded to that prefix regardless of which
	When a delegated prefix is released or expires, the		interface they are received on. When a delegated prefix is
	associated route MUST be removed from the IPv6 CE router's		released or expires, the associated route MUST be removed
	routing table. A delegated prefix expires when the valid		from the IPv6 CE router's routing table. A delegated prefix
	lifetime assigned in the IA_PD expires without being		expires when the valid lifetime assigned in the IA_PD
	renewed. When a prefix is released or expires, it MUST be		expires without being renewed. When a prefix is released or
	returned the pool of available prefixes.		expires, it MUST be returned the pool of available prefixes.
	LPD-6: By default, the IPv6 CE router filtering rules MUST allow		LPD-6: By default, the IPv6 CE router filtering rules MUST allow
	forwarding of packets with an outer IPv6 header containing a		forwarding of packets with an outer IPv6 header containing a
	source address belonging to delegated prefixes, along with		source address belonging to delegated prefixes, along with
	reciprocal packets from the same flow, following the		reciprocal packets from the same flow, following the
	recommendations of [RFC6092]. This updates WPD-5 of		recommendations of [RFC6092]. This updates WPD-5 of
	[RFC7084] to not drop packets from prefixes that have been		[RFC7084] to not drop packets from prefixes that have been
	delegated. IPv6 CE routers MUST continue to drop packets,		delegated. IPv6 CE routers MUST continue to drop packets,
	including destination address, that are not assigned to the		including destination address, that are not assigned to the
	LAN or delegated.		LAN or delegated.
End of changes. 2 change blocks.
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