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    "abstract": "This document discusses how L2TP (Layer Two Tunneling Protocol) may utilize IPsec to provide for tunnel authentication, privacy protection, integrity checking and replay protection. Both the voluntary and compulsory tunneling cases are discussed. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Dr. Baiju V. Patel"
      },
      {
        "name": "Dr. Bernard D. Aboba"
      },
      {
        "name": "William Dixon"
      },
      {
        "name": "Glen Zorn"
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      {
        "name": "Skip Booth"
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      "updated": "2026-10-12T21:12:47.291Z",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
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      "note": "Parsed from RFC info page report metadata",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
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    "docTitle": "Securing L2TP using IPsec",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
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      "confidence": "high",
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      "source": "parsed",
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      "updated": "2026-10-12T21:12:47.291Z",
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    },
    "doi": "10.17487/RFC3193",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
      "version": "extractDocs.js@commit:291bb05ea30a"
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    "href": "https://doi.org/10.17487/RFC3193",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
      "version": "extractDocs.js@commit:291bb05ea30a"
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      "Authentication",
      "IPSEC"
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      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
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      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
      "version": "extractDocs.js@commit:291bb05ea30a"
    },
    "publicationDate": "2001-11-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
      "updated": "2026-10-12T21:12:47.291Z",
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      "confidence": "high",
      "note": "Static: provider",
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      "source": "parsed",
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      "bibliographic": [
        "RFC2661",
        "RFC2119",
        "RFC2402",
        "RFC2406",
        "RFC2407",
        "RFC2401",
        "RFC2409",
        "RFC1661",
        "RFC1962",
        "RFC1968",
        "RFC1969",
        "RFC2419",
        "RFC2420",
        "RFC2246",
        "RFC1994",
        "RFC2284",
        "RFC2373"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=24 proseBlocks=19 skippedAnchorBlocks=18",
        "note": "Parsed from RFC HTML references/informative sections",
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        "reviewRequired": true,
        "source": "parsed",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
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      "source": "resolved",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
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        "source": "resolved",
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        "updated": "2026-10-12T21:12:47.291Z",
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        "confidence": "high",
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        "source": "parsed",
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        "version": "extractDocs.js@commit:291bb05ea30a"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
        "updated": "2026-10-12T21:12:47.291Z",
        "version": "extractDocs.js@commit:291bb05ea30a"
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      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
        "updated": "2026-10-12T21:12:47.291Z",
        "version": "extractDocs.js@commit:291bb05ea30a"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
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        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3193/",
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