{
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    "abstract": "This document specifies a method for encapsulating and transmitting IPv4/IPv6 and Address Resolution Protocol (ARP) packets over InfiniBand (IB). It describes the link-layer address to be used when resolving the IP addresses in IP over InfiniBand (IPoIB) subnets. The document also describes the mapping from IP multicast addresses to InfiniBand multicast addresses. In addition, this document defines the setup and configuration of IPoIB links. [STANDARDS-TRACK]",
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      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "authors": [
      {
        "name": "H.K. Jerry Chu"
      },
      {
        "name": "Vivek Kashyap"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-14T18:50:33.214Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docId": "RFC4391",
    "docId$meta": {
      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docLabel": "IETF RFC 4391",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docNumber": "4391",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docTitle": "Transmission of IP over InfiniBand (IPoIB)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docType": "Standard",
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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": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC4391",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.214Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "href": "https://doi.org/10.17487/RFC4391",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "keywords": [
      "ARP"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "ARP",
        "Ib"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-15T16:40:49.470Z",
      "version": "extractDocs.js@commit:0f51bb226575"
    },
    "pages": "21",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.214Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publicationDate": "2006-04-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-14T18:50:33.213Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "references": {
      "bibliographic": [
        "RFC1122",
        "RFC3376",
        "RFC2710",
        "RFC1112",
        "RFC2460"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=15 proseBlocks=17 skippedAnchorBlocks=15",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "normative": [
        "RFC3513",
        "RFC826",
        "RFC2461",
        "IANA",
        "RFC4392",
        "RFC2119",
        "orphan/RFC4391/h:0d492987",
        "orphan/RFC4391/h:12295b85"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4391/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
      "updated": "2026-10-15T16:40:49.470Z",
      "version": "extractDocs.js@commit:0f51bb226575"
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    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "amendedBy": [
        "RFC8064"
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      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4391/",
        "updated": "2026-10-14T18:50:33.214Z",
        "version": "extractDocs.js@commit:673dd514c094"
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}