Browse Prior Art Database

Observations on the Dropping of Packets with IPv6 Extension Headers in the Real World (RFC7872) Disclosure Number: IPCOM000246744D
Original Publication Date: 2016-Jun-01
Included in the Prior Art Database: 2016-Jun-29
Document File: 30 page(s) / 31K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

F. Gont: AUTHOR [+3]


IPv6 Extension Headers (EHs) allow for the extension of the IPv6 protocol and provide support for core functionality such as IPv6 fragmentation. While packets employing IPv6 EHs have been suspected to be dropped in some IPv6 deployments, there was not much concrete data on the topic. Some preliminary measurements have been presented in [PMTUD-Blackholes], [Gont-IEPG88], and [Gont-Chown-IEPG89], whereas [Linkova-Gont-IEPG90] presents more comprehensive results on which this document is based.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 9% of the total text.

Internet Engineering Task Force (IETF)                           F. Gont Request for Comments: 7872                        SI6 Networks / UTN-FRH Category: Informational                                       J. Linkova ISSN: 2070-1721                                                   Google                                                                 T. Chown                                                                     Jisc                                                                   W. Liu                                                      Huawei Technologies                                                                June 2016

                 Observations on the Dropping of Packets              with IPv6 Extension Headers in the Real World


   This document presents real-world data regarding the extent to which    packets with IPv6 Extension Headers (EHs) are dropped in the Internet    (as originally measured in August 2014 and later in June 2015, with    similar results) and where in the network such dropping occurs.  The    aforementioned results serve as a problem statement that is expected    to trigger operational advice on the filtering of IPv6 packets    carrying IPv6 EHs so that the situation improves over time.  This    document also explains how the results were obtained, such that the    corresponding measurements can be reproduced by other members of the    community and repeated over time to observe changes in the handling    of packets with IPv6 EHs.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see Section 2 of RFC 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

 Gont, et al.                  Informational                     [Page 1]
 RFC 7872                 IPv6 Extension Headers                June 2016

 Copyright Notice