{
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    "abstract": "This memo reclassifies RFC 4148, \"IP Performance Metrics (IPPM) Metrics Registry\", as Obsolete, and withdraws the IANA IPPM Metrics Registry itself from use because it is obsolete. The current registry structure has been found to be insufficiently detailed to uniquely identify IPPM metrics. Despite apparent efforts to find current or even future users, no one responded to the call for interest in the RFC 4148 registry during the second half of 2010. This document is not an Internet Standards Track specification; it is published for informational purposes.",
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    "authors": [
      {
        "name": "Al Morton"
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      "confidence": "high",
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      "confidence": "high",
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      "updated": "2026-10-16T20:43:34.445Z",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
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    "docNumber": "6248",
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      "confidence": "high",
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      "updated": "2026-10-16T20:43:34.445Z",
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    "docTitle": "and the IP Performance Metrics (IPPM) Registry of Metrics Are Obsolete",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
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      "updated": "2026-10-16T20:43:34.445Z",
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      "confidence": "high",
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    },
    "doi": "10.17487/RFC6248",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
      "updated": "2026-10-16T20:43:34.445Z",
      "version": "extractDocs.js@commit:2c3b1db1b97b"
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    "href": "https://doi.org/10.17487/RFC6248",
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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/rfc6248/",
      "updated": "2026-10-16T20:43:34.445Z",
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    "pages": "6",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
      "updated": "2026-10-16T20:43:34.445Z",
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    },
    "publicationDate": "2011-04-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
      "updated": "2026-10-16T20:43:34.445Z",
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    },
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-16T20:43:34.445Z",
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        "RFC2680",
        "RFC3393",
        "RFC3432",
        "RFC4737",
        "RFC5560",
        "RFC5644",
        "RFC6049"
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        "flag": "MIXED_REF_LAYOUT_RISK anchored=10 proseBlocks=13 skippedAnchorBlocks=11",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
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      },
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
      "updated": "2026-10-16T20:43:34.445Z",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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      "amends": [
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        "RFC5560",
        "RFC5644",
        "RFC6049"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
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      "errataExist": false,
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        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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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/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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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/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6248/",
        "updated": "2026-10-16T20:43:34.445Z",
        "version": "extractDocs.js@commit:2c3b1db1b97b"
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