Copyright Notice Copyright (c)2021<insert year> IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETFTrust'sTrust’s Legal Provisions Relating to IETF Documents(https://trustee.ietf.org/license-info)(http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must includeSimplifiedRevised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in theSimplifiedRevised BSD License. Copyright Notice (alternate streams) Copyright (c)2021<insert year> IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETFTrust'sTrust’s Legal Provisions Relating to IETF Documents(https://trustee.ietf.org/license-info)(http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Pre-5378 material This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. For Code Components Copyright (c)2021<insert year> IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, theSimplifiedRevised BSD License set forth in Section 4.c of the IETFTrust'sTrust’s Legal Provisions Relating to IETF Documents(https://trustee.ietf.org/license-info).(http://trustee.ietf.org/license-info).