{"abstract": "   In the past, various IPv6 addressing models have been proposed based\n   on a subnet hierarchy embedding a 64-bit prefix.  The last remnant of\n   IPv6 classful addressing is a inflexible interface identifier\n   boundary at /64.  This document details the 64-bit boundary problem\n   statement.\n", "ad": null, "expires": "2026-01-08T22:54:36Z", "external_url": "", "group": "/api/v1/group/group/1027/", "id": 136916, "intended_std_level": null, "keywords": "[]", "name": "draft-mishra-v6ops-variable-iids-problem-statement", "note": "", "notify": "", "pages": 32, "resource_uri": "/api/v1/doc/document/draft-mishra-v6ops-variable-iids-problem-statement/", "rev": "03", "rfc": null, "rfc_number": null, "shepherd": null, "states": ["/api/v1/doc/state/2/", "/api/v1/doc/state/150/"], "std_level": null, "stream": null, "submissions": ["/api/v1/submit/submission/144296/", "/api/v1/submit/submission/144573/", "/api/v1/submit/submission/147411/", "/api/v1/submit/submission/153916/"], "tags": [], "time": "2026-01-09T07:09:24Z", "title": "SLAAC Prefixes with Variable Interface ID (IID) Problem Statement", "type": "/api/v1/name/doctypename/draft/", "uploaded_filename": "", "words": null}