{
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    "abstract": "This memo defines a registry for IP Performance Metrics (IPPM). It assigns and registers an initial set of OBJECT IDENTITIES to currently defined metrics in the IETF. This memo also defines the rules for adding IP Performance Metrics that are defined in the future and for encouraging all IP performance metrics to be registered here. IANA has been assigned to administer this new registry. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.",
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    "authors": [
      {
        "name": "Emile Stephan"
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      "confidence": "high",
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      "updated": "2026-10-16T18:53:24.907Z",
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      "confidence": "high",
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      "originalValue": null,
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
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      "updated": "2026-10-16T18:53:24.907Z",
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    "docNumber": "4148",
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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/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
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    "docTitle": "IP Performance Metrics (IPPM) Metrics Registry",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
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      "source": "parsed",
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      "updated": "2026-10-16T18:53:24.907Z",
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    "doi": "10.17487/RFC4148",
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      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
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    "href": "https://doi.org/10.17487/RFC4148",
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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/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
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    "keywords": [
      "IP",
      "IANA-IPPM-METRICS-REGISTRY-MIB"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
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        "Iana-ippm-metrics-registry-mib"
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      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
      "updated": "2026-10-16T19:27:23.235Z",
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    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "publicationDate": "2005-08-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
      "updated": "2026-10-16T18:53:24.907Z",
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    "publisher": "IETF",
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      "source": "parsed",
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        "RFC2580",
        "RFC3410"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=12 proseBlocks=15 skippedAnchorBlocks=13",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "normative": [
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        "RFC2578",
        "RFC2678",
        "RFC2679",
        "RFC2680",
        "RFC2681",
        "RFC3357",
        "RFC3393",
        "RFC3432"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc4148/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-16T18:53:24.907Z",
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    "status": {
      "active": false,
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "statusNote": "Best Current Practice",
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        "confidence": "high",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "supersededBy": [
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      "supersededBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4148/",
        "updated": "2026-10-16T18:53:24.907Z",
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