{
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  "docId": "RFC7136",
  "document": {
    "abstract": "The IPv6 addressing architecture includes a unicast interface identifier that is used in the creation of many IPv6 addresses. Interface identifiers are formed by a variety of methods. This document clarifies that the bits in an interface identifier have no meaning and that the entire identifier should be treated as an opaque value. In particular, RFC 4291 defines a method by which the Universal and Group bits of an IEEE link-layer address are mapped into an IPv6 unicast interface identifier. This document clarifies that those two bits are significant only in the process of deriving interface identifiers from an IEEE link-layer address, and it updates RFC 4291 accordingly.",
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      "confidence": "high",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "authors": [
      {
        "name": "Brian E. Carpenter"
      },
      {
        "name": "Sheng Jiang"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
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      "source": "parsed",
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      "updated": "2026-10-14T16:14:08.503Z",
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    "docId": "RFC7136",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
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    "docLabel": "IETF RFC 7136",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docNumber": "7136",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docTitle": "Significance of IPv6 Interface Identifiers",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "doi": "10.17487/RFC7136",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "href": "https://doi.org/10.17487/RFC7136",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "pages": "10",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publicationDate": "2014-02-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "references": {
      "bibliographic": [
        "IEEE.STD802.2001",
        "RFC2526",
        "RFC3306",
        "RFC3307",
        "RFC3972",
        "RFC4941",
        "RFC4982",
        "RFC5214",
        "RFC5226",
        "RFC5535",
        "RFC6052",
        "RFC6164",
        "RFC6741",
        "RFC6775",
        "RFC6957",
        "orphan/RFC7136/h:1e3597e6",
        "orphan/RFC7136/h:f838819d"
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      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=22 proseBlocks=28 skippedAnchorBlocks=24",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "normative": [
        "RFC2119",
        "RFC4291",
        "RFC4862",
        "RFC5453",
        "RFC7042"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc7136/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
      "updated": "2026-10-14T16:14:08.503Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
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    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "amends": [
        "RFC4291"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7136/",
        "updated": "2026-10-14T16:14:08.503Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
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}