{
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  "sourcePath": "src/main/data/docs",
  "docId": "RFC9210",
  "document": {
    "abstract": "This document updates RFCs 1123 and 1536. This document requires the operational practice of permitting DNS messages to be carried over TCP on the Internet as a Best Current Practice. This operational requirement is aligned with the implementation requirements in RFC 7766. The use of TCP includes both DNS over unencrypted TCP as well as over an encrypted TLS session. The document also considers the consequences of this form of DNS communication and the potential operational issues that can arise when this Best Current Practice is not upheld.",
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      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "authors": [
      {
        "name": "John Kristoff"
      },
      {
        "name": "Duane Wessels"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docId": "RFC9210",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docLabel": "IETF RFC 9210",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docNumber": "9210",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docTitle": "DNS Transport over TCP - Operational Requirements",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "docType": "Best Practice",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "doi": "10.17487/RFC9210",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "href": "https://doi.org/10.17487/RFC9210",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "keywords": [
      "DNS",
      "TCP"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "pages": "29",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publicationDate": "2022-03-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "references": {
      "bibliographic": [
        "IETF.draft-ietf-dnsop-avoid-fragmentation-06",
        "10.1007-978-3-642-12365-8_1",
        "10.1145-3472305.3472884",
        "10.1145-2831347.2831350",
        "10.1145-1879141.1879173",
        "RFC768",
        "RFC793",
        "RFC883",
        "RFC1034",
        "RFC1123",
        "RFC1536",
        "RFC1995",
        "RFC1996",
        "RFC2136",
        "RFC2541",
        "RFC2671",
        "RFC2694",
        "RFC3022",
        "RFC3225",
        "RFC3226",
        "RFC4472",
        "RFC4953",
        "RFC4987",
        "RFC5358",
        "RFC5452",
        "RFC5507",
        "RFC5625",
        "RFC5927",
        "RFC5936",
        "RFC5961",
        "RFC5966",
        "RFC6298",
        "RFC6762",
        "RFC6781",
        "RFC6950",
        "RFC7413",
        "RFC7477",
        "RFC7534",
        "RFC7720",
        "RFC7858",
        "RFC7901",
        "RFC7918",
        "RFC8027",
        "RFC8094",
        "RFC8162",
        "RFC8200",
        "RFC8324",
        "RFC8446",
        "RFC8467",
        "RFC8482",
        "RFC8483",
        "RFC8484",
        "RFC8490",
        "RFC8501",
        "RFC8806",
        "RFC8906",
        "RFC8932",
        "RFC8945",
        "10.1145-3355369.3355570",
        "10.1109-SP.2015.18",
        "orphan/RFC9210/h:fe169bc1",
        "orphan/RFC9210/h:da7e0b22",
        "orphan/RFC9210/h:867b74a4",
        "orphan/RFC9210/h:a123aa9b",
        "orphan/RFC9210/h:4a3ba6f4",
        "orphan/RFC9210/h:4c1df6e1",
        "orphan/RFC9210/h:e98112d2",
        "orphan/RFC9210/h:3a549324",
        "orphan/RFC9210/h:4fea3aae",
        "orphan/RFC9210/h:c5123b30",
        "orphan/RFC9210/h:e5159bb7",
        "orphan/RFC9210/h:a5f6153d",
        "orphan/RFC9210/h:cbd12ab0",
        "orphan/RFC9210/h:b15f2a6b",
        "orphan/RFC9210/h:5297af96",
        "orphan/RFC9210/h:86406f17",
        "orphan/RFC9210/h:903db41f",
        "orphan/RFC9210/h:54b1708d",
        "orphan/RFC9210/h:d2f170e8",
        "orphan/RFC9210/h:f4a40ddb"
      ],
      "bibliographic$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "normative": [
        "RFC1035",
        "RFC2119",
        "RFC2181",
        "RFC6891",
        "RFC7766",
        "RFC7828",
        "RFC7873",
        "RFC8174"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc9210/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
      "updated": "2026-10-14T16:17:02.820Z",
      "version": "extractDocs.js@commit:1ff63569c1a0"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "amends": [
        "RFC1123",
        "RFC1536"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.821Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "errataExist": false,
      "errataExist$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/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "statusNote": "Best Current Practice",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc9210/",
        "updated": "2026-10-14T16:17:02.820Z",
        "version": "extractDocs.js@commit:1ff63569c1a0"
      }
    }
  }
}