{
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    "abstract": "Some networks require communication between an interior and exterior portion of a Virtual Private Network (VPN) or through a concatenation of such networks resulting in a nested VPN, but have sensitivities about what information is communicated across the boundary, especially while providing quality of service to communications with different precedence. This note seeks to outline the issues and the nature of the proposed solutions based on the framework for Integrated Services operation over Diffserv networks as described in RFC 2998. This memo provides information for the Internet community.",
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    "authors": [
      {
        "name": "Fred Baker"
      },
      {
        "name": "Pratik Bose"
      }
    ],
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
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      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
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    "docId": "RFC4923",
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      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
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    "docLabel": "IETF RFC 4923",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
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    },
    "docNumber": "4923",
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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/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
    "docTitle": "Quality of Service (QoS) Signaling in a Nested Virtual Private Network",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
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    },
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
    "doi": "10.17487/RFC4923",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
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    "href": "https://doi.org/10.17487/RFC4923",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
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    "keywords": [
      "VPN",
      "Nested Vpn",
      "Integrated Services"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
    "pages": "38",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
    "publicationDate": "2007-08-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
    },
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      "bibliographic": [
        "T-REC-I.255.1990",
        "RFC791",
        "RFC1633",
        "RFC2209",
        "RFC2210",
        "RFC2460",
        "RFC2474",
        "RFC2475",
        "RFC2747",
        "RFC2872",
        "RFC3097",
        "RFC3181",
        "RFC3182",
        "RFC3246",
        "RFC3261",
        "RFC3312",
        "RFC3473",
        "RFC3474",
        "RFC4301",
        "RFC4303"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=30 proseBlocks=37 skippedAnchorBlocks=32",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
      },
      "normative": [
        "RFC2205",
        "RFC2207",
        "RFC2746",
        "RFC2750",
        "RFC2996",
        "RFC3175",
        "RFC4495",
        "RFC4542",
        "RFC4860"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4923/",
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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/rfc4923/",
      "updated": "2026-10-16T20:42:09.809Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
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      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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      "errataExist": false,
      "errataExist$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/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4923/",
        "updated": "2026-10-16T20:42:09.809Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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