{
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  "sourcePath": "src/main/data/docs",
  "docId": "RFC6157",
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    "abstract": "This document describes how the IPv4 Session Initiation Protocol (SIP) user agents can communicate with IPv6 SIP user agents (and vice versa) at the signaling layer as well as exchange media once the session has been successfully set up. Both single- and dual-stack (i.e., IPv4-only and IPv4/IPv6) user agents are considered. [STANDARDS-TRACK]",
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      "confidence": "high",
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      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "authors": [
      {
        "name": "Gonzalo Camarillo"
      },
      {
        "name": "Karim El Malki"
      },
      {
        "name": "Vijay K. Gurbani"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docId": "RFC6157",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docLabel": "IETF RFC 6157",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docNumber": "6157",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docTitle": "IPv6 Transition in the Session Initiation Protocol (SIP)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "doi": "10.17487/RFC6157",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "href": "https://doi.org/10.17487/RFC6157",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "pages": "15",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2011-04-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "references": {
      "bibliographic": [
        "RFC3319",
        "RFC3361",
        "RFC3725",
        "RFC3550",
        "RFC2543",
        "RFC5118",
        "RFC4038",
        "RFC4213",
        "RFC5389",
        "RFC4943"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=19 proseBlocks=25 skippedAnchorBlocks=22",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "normative": [
        "RFC2119",
        "RFC4566",
        "RFC3261",
        "RFC3264",
        "RFC3263",
        "RFC5766",
        "RFC5245",
        "RFC6156",
        "RFC3484"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc6157/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
      "updated": "2026-10-13T22:25:44.439Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "amends": [
        "RFC3264"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc6157/",
        "updated": "2026-10-13T22:25:44.439Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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}