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auto-ingest: ietf-elements backfill — 256 new elements (2026-05-24)
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‎corpus/elements/rfc-2338__design-rationale-authentication-types-are-encoded-in-the-packet-header.yaml‎

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document: rfc-2338
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kind: design-rationale
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summary: Authentication types are encoded in the packet header in a way that allows new authentication types to be defined without altering the fixed portion of the protocol packet, preserving backward-compatible operation for future extensibility.
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section: "3"
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topics:
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- routing
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- security
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__design-rationale-only-the-master-sends-periodic-advertisement-messages-to.yaml‎

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document: rfc-2338
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kind: design-rationale
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summary: Only the Master sends periodic ADVERTISEMENT messages to minimize steady-state bandwidth overhead. A Backup will not preempt unless it has strictly higher priority, eliminating service disruption unless a more preferred path becomes available. Preemption can also be administratively disabled entirely, except that the IP address owner always preempts.
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section: "3"
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__design-rationale-the-virtual-router-mac-address-is-used-as.yaml‎

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document: rfc-2338
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kind: design-rationale
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summary: The virtual router MAC address is used as the source address in all Master-originated VRRP packets so that learning bridges in extended LANs can correctly locate the virtual router on its LAN segment and avoid flooding. The Master sends gratuitous ARPs on state transition for the same reason.
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section: "2.5"
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topics:
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- routing
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- ip
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__design-rationale-token-ring-vrid-to-functional-address-allocation-begins.yaml‎

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document: rfc-2338
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kind: design-rationale
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summary: Token ring VRID-to-functional-address allocation begins with the largest functional address (03-00-02-00-00-00 for VRID 1) because most non-IP protocols use the first user-defined functional addresses, reducing the likelihood of conflicts with protocols such as Novell IPX which uses 03-00-00-10-00-00.
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section: "9.2"
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__design-rationale-vrrp-is-optimized-for-the-typical-case-of.yaml‎

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document: rfc-2338
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kind: design-rationale
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summary: VRRP is optimized for the typical case of two redundant routers and/or distinct path preferences. When more than two equal-priority routers exist, duplicate packets may be forwarded briefly during Master election, a known and accepted side effect. The expected convergence time is much less than 1 second, making this tradeoff acceptable.
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section: "3"
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__interoperability-note-on-fddi-an-implementation-should-configure-the-virtual.yaml‎

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document: rfc-2338
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kind: interoperability-note
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summary: On FDDI, an implementation SHOULD configure the virtual router MAC address by adding a unicast MAC filter rather than changing the hardware MAC address, because FDDI interfaces remove frames with a source MAC matching the device's own hardware address, which would cause Masters to strip each other's ADVERTISEMENTs and prevent convergence.
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section: "9.1"
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__interoperability-note-on-token-ring-in-unicast-mode-hosts-that.yaml‎

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document: rfc-2338
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kind: interoperability-note
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summary: On token ring in unicast mode, hosts that keep source-route information in the ARP cache and do not listen to gratuitous ARPs will fail to update routing information after a Master switchover if VRID routers are on different source-route bridge segments. The only solution is to co-locate all same-VRID routers on one bridge segment.
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section: "9.2"
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__normative-requirement-a-packet-with-an-unknown-authentication-type-or.yaml‎

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document: rfc-2338
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kind: normative-requirement
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summary: A packet with an unknown authentication type or one that does not match the locally configured authentication method MUST be discarded. Authentication type is unique on a per-interface basis.
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section: 5.3.6
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rfc2119_level: MUST
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topics:
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- routing
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- security
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__normative-requirement-a-vrrp-packet-with-an-unknown-type-field.yaml‎

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document: rfc-2338
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kind: normative-requirement
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summary: A VRRP packet with an unknown Type field MUST be discarded. This document defines only Type 1 (ADVERTISEMENT).
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section: 5.3.2
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rfc2119_level: MUST
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topics:
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- routing
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

‎corpus/elements/rfc-2338__normative-requirement-if-proxy-arp-is-used-on-a-vrrp.yaml‎

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document: rfc-2338
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kind: normative-requirement
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summary: If Proxy ARP is used on a VRRP router, the virtual router MAC address MUST be advertised in the Proxy ARP message, not the real MAC address, to prevent hosts from learning the physical router's address.
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section: "8.3"
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rfc2119_level: MUST
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topics:
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- routing
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- ip
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extracted_by: claude-sonnet-4-6
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extracted_at: "2026-05-24"

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