{
  "$schema": "/api/schemas/documents.schema.json",
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  "lastModified": "2026-10-16T15:44:51.349Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC3964",
  "document": {
    "abstract": "The IPv6 interim mechanism 6to4 (RFC3056) uses automatic IPv6-over-IPv4 tunneling to interconnect IPv6 networks. The architecture includes 6to4 routers and 6to4 relay routers, which accept and decapsulate IPv4 protocol-41 (\"IPv6-in-IPv4\") traffic from any node in the IPv4 internet. This characteristic enables a number of security threats, mainly Denial of Service. It also makes it easier for nodes to spoof IPv6 addresses. This document discusses these issues in more detail and suggests enhancements to alleviate the problems. This memo provides information for the Internet community.",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "authors": [
      {
        "name": "Pekka Savola"
      },
      {
        "name": "Chirayu Patel"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docId": "RFC3964",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docLabel": "IETF RFC 3964",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docNumber": "3964",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docTitle": "Security Considerations for 6to4",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docType": "Informational",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "doi": "10.17487/RFC3964",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "href": "https://doi.org/10.17487/RFC3964",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "pages": "41",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "publicationDate": "2004-12-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "references": {
      "bibliographic": [
        "RFC2893",
        "RFC3330",
        "RFC1771",
        "RFC3484",
        "RFC3756",
        "RFC2827",
        "RFC1812",
        "RFC1853",
        "orphan/RFC3964/h:ec205899",
        "orphan/RFC3964/h:9fece790",
        "orphan/RFC3964/h:d6b9ab63",
        "orphan/RFC3964/h:85301f0d",
        "orphan/RFC3964/h:e5d1f81a",
        "orphan/RFC3964/h:ac6a8cb5"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=17 proseBlocks=21 skippedAnchorBlocks=19",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "normative": [
        "RFC3056",
        "RFC2119",
        "RFC3068"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc3964/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
      "updated": "2026-10-16T15:44:51.349Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "errataExist": true,
      "errataExist$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/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc3964",
        "https://www.rfc-editor.org/errata_search.php?rfc=3964",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc3964.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3964/",
        "updated": "2026-10-16T15:44:51.349Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      }
    }
  }
}