{
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    "abstract": "This document describes a simple and efficient mechanism that can be used to detect data plane failures in Multi-Protocol Label Switching (MPLS) Label Switched Paths (LSPs). There are two parts to this document: information carried in an MPLS \"echo request\" and \"echo reply\" for the purposes of fault detection and isolation, and mechanisms for reliably sending the echo reply. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Kireeti Kompella"
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      {
        "name": "George Swallow"
      }
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      "confidence": "high",
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      "source": "parsed",
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      "updated": "2026-10-13T22:23:32.527Z",
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    "docId": "RFC4379",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
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    "docLabel": "IETF RFC 4379",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
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    "docNumber": "4379",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
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      "confidence": "high",
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      "source": "parsed",
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      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "doi": "10.17487/RFC4379",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "href": "https://doi.org/10.17487/RFC4379",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "pages": "50",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2006-02-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
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      "bibliographic": [
        "RFC3107",
        "RFC792",
        "RFC3036",
        "RFC4365",
        "RFC3209",
        "orphan/RFC4379/h:080a876c",
        "orphan/RFC4379/h:5eefbe7e",
        "orphan/RFC4379/h:922d3457"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=16 proseBlocks=21 skippedAnchorBlocks=17",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
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        "RFC4271",
        "RFC2434",
        "RFC2119",
        "RFC3032",
        "RFC2030",
        "RFC1122",
        "RFC1812",
        "RFC4026"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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    },
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
      "updated": "2026-10-13T22:23:32.527Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "amendedBy": [
        "RFC5462",
        "RFC6424",
        "RFC6425",
        "RFC6426",
        "RFC6829",
        "RFC7506",
        "RFC7537",
        "RFC7743"
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      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "amends": [
        "RFC1122"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=4379",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc4379.html"
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      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "superseded": true,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "supersededBy": [
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      "supersededBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4379/",
        "updated": "2026-10-13T22:23:32.527Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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