{
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  "sourcePath": "src/main/data/docs",
  "docId": "RFC5220",
  "document": {
    "abstract": "A single physical link can have multiple prefixes assigned to it. In that environment, end hosts might have multiple IP addresses and be required to use them selectively. RFC 3484 defines default source and destination address selection rules and is implemented in a variety of OSs. But, it has been too difficult to use operationally for several reasons. In some environments where multiple prefixes are assigned on a single physical link, the host using the default address selection rules will experience some trouble in communication. This document describes the possible problems that end hosts could encounter in an environment with multiple prefixes. This memo provides information for the Internet community.",
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      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "authors": [
      {
        "name": "Arifumi Matsumoto"
      },
      {
        "name": "Tomohiro Fujisaki"
      },
      {
        "name": "Ruri Hiromi"
      },
      {
        "name": "Ken-ichi Kanayama"
      }
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
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      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
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    "docId": "RFC5220",
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      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
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    "docLabel": "IETF RFC 5220",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docNumber": "5220",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docTitle": "Problem Statement for Default Address Selection in Multi-Prefix Environments: Operational Issues of RFC 3484 Default Rules",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "docType": "Informational",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "doi": "10.17487/RFC5220",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "href": "https://doi.org/10.17487/RFC5220",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "keywords": [
      "Multiple Prefixes"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "pages": "17",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "publicationDate": "2008-07-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "references": {
      "normative": [
        "RFC3041",
        "RFC3484",
        "RFC3775",
        "RFC4192",
        "RFC4193",
        "RFC4291",
        "RFC4862",
        "RFC4864",
        "RFC5014"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc5220/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
      "updated": "2026-10-16T18:53:57.727Z",
      "version": "extractDocs.js@commit:a6ae1efef02e"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc5220",
        "https://www.rfc-editor.org/errata_search.php?rfc=5220",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc5220.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "statusNote": "Informational",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5220/",
        "updated": "2026-10-16T18:53:57.727Z",
        "version": "extractDocs.js@commit:a6ae1efef02e"
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}