Delegate a prefix to a router
03An IA_PD requests and carries delegated prefixes for a downstream router rather than a single host address.
This guide explains the 2018 publication. Superseded by RFC 9915.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 21.21 ↗
RFC 8415 · § 21.21EXAMPLE
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03
The requesting router can allocate downstream subnets within that delegation.
The requesting router can allocate downstream subnets within that delegation.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
RFC 3315 + RFC 3633RFC 8415 § 1.1
The 2018 specification consolidates base DHCPv6, prefix delegation, and other updates. RFC 9915 is the later successor.
Read the updated RFC section ↗IA Prefix options include preferred and valid lifetimes.
- IA Prefix options include preferred and valid lifetimes.
- A delegated prefix is not a license to use arbitrary other prefixes.
The drawing is a simplified worked example. Follow the linked RFC and its updates for implementation requirements.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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