{
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    "abstract": "This document discusses privacy and security considerations for several IPv6 address generation mechanisms, both standardized and non-standardized. It evaluates how different mechanisms mitigate different threats and the trade-offs that implementors, developers, and users face in choosing different addresses or address generation mechanisms.",
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    "authors": [
      {
        "name": "Alissa Cooper"
      },
      {
        "name": "Fernando Gont"
      },
      {
        "name": "Dave Thaler"
      }
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
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      "updated": "2026-10-20T17:31:27.531Z",
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      "confidence": "high",
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      "originalValue": null,
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
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    "docLabel": "IETF RFC 7721",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
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    "docNumber": "7721",
    "docNumber$meta": {
      "confidence": "high",
      "note": "From the RFC index entry (rfc-index.xml <doc-id>)",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-20T17:31:27.531Z",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
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      "updated": "2026-10-20T17:31:27.531Z",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
    },
    "href": "https://doi.org/10.17487/RFC7721",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
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    "pages": "18",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
    },
    "publicationDate": "2016-03-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
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      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
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        "IETF.draft-ietf-dhc-stable-privacy-addresses-02",
        "RFC1971",
        "RFC1972",
        "RFC3041",
        "RFC3261",
        "RFC3314",
        "RFC3484",
        "RFC5214",
        "RFC6052",
        "RFC6265",
        "RFC6973",
        "RFC7421",
        "RFC7596",
        "RFC7597",
        "RFC7599",
        "RFC7707",
        "orphan/RFC7721/h:8823d6eb",
        "orphan/RFC7721/h:1d4b8369",
        "orphan/RFC7721/h:5f87e71b",
        "orphan/RFC7721/h:04f4bf43"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=36 proseBlocks=43 skippedAnchorBlocks=37",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
      },
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        "RFC2119",
        "RFC2464",
        "RFC3315",
        "RFC3971",
        "RFC3972",
        "RFC4380",
        "RFC4862",
        "RFC4941",
        "RFC5991",
        "RFC6724",
        "RFC7136",
        "RFC7217"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc7721/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
      "updated": "2026-10-20T17:31:27.531Z",
      "version": "extractDocs.js@commit:8277ba975118"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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      "errataExist": false,
      "errataExist$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/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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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/rfc7721/",
        "updated": "2026-10-20T17:31:27.531Z",
        "version": "extractDocs.js@commit:8277ba975118"
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