IPv4 Extension Headers and UDP Encapsulated Extension Headers
draft-herbert-ipv4-udpencap-eh-01

Document Type Active Internet-Draft (individual)
Last updated 2019-03-08
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
INTERNET-DRAFT                                                T. Herbert
Intended Status: Proposed Standard                            Quantonium
Expires: September 2019                                                 
                                                                        
                                                           March 8, 2019

     IPv4 Extension Headers and UDP Encapsulated Extension Headers 
                   draft-herbert-ipv4-udpencap-eh-01

Abstract

   This specification defines extension headers for IPv4 and a method to
   encapsulate extension headers in UDP to facilitate transmission over
   the Internet, as well as a definition of an IPv4 flow label. The goal
   is to provide a uniform and feasible method of extensibility that is
   shared between IPv4 and IPv6.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as
   Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/1id-abstracts.html

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

Copyright and License Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
 

T. Herbert             Expires September 9, 2019                [Page 1]
INTERNET DRAFT     draft-herbert-ipv4-udpencap-eh-01       March 8, 2019

   (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
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1 IPv4 extension headers . . . . . . . . . . . . . . . . . . .  3
     1.2 Encapsulating extension headers in UDP . . . . . . . . . . .  3
     1.3 The IPv4 flow label  . . . . . . . . . . . . . . . . . . . .  4
   2  IPv4 extension headers  . . . . . . . . . . . . . . . . . . . .  4
     2.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.2 Interaction with standard IPv4 mechanisms  . . . . . . . . .  6
       2.2.1 IPv4 options and IPv4 extension headers  . . . . . . . .  7
       2.2.2 IPv4 fragmentation and IPv4 extension headers  . . . . .  7
   3  Encapsulating extension headers in UDP  . . . . . . . . . . . .  7
     3.1 Encapsulation format . . . . . . . . . . . . . . . . . . . .  8
     3.2 GUE magic numbers  . . . . . . . . . . . . . . . . . . . . .  9
     3.3 Operation  . . . . . . . . . . . . . . . . . . . . . . . . . 10
       3.3.1 Sender processing  . . . . . . . . . . . . . . . . . . . 10
       3.3.2 Destination Processing . . . . . . . . . . . . . . . . . 11
       3.3.3 Intermediate device processing . . . . . . . . . . . . . 11
   4  The IPv4 flow label . . . . . . . . . . . . . . . . . . . . . . 12
     4.1 Sender requirements  . . . . . . . . . . . . . . . . . . . . 12
     4.2 Receiver requirements  . . . . . . . . . . . . . . . . . . . 13
   5  Security Considerations . . . . . . . . . . . . . . . . . . . . 14
   6  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 14
   7  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     7.1  Normative References  . . . . . . . . . . . . . . . . . . . 14
     7.2  Informative References  . . . . . . . . . . . . . . . . . . 15
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 16

 

T. Herbert             Expires September 9, 2019                [Page 2]
INTERNET DRAFT     draft-herbert-ipv4-udpencap-eh-01       March 8, 2019

1  Introduction

   This specification defines extension headers for IPv4 and a method to
   encapsulate extension headers in UDP to facilitate transmission over
   the Internet. An IPv4 flow label is also defined to help intermediate
   nodes classify flows for packets with unknown protocols.

1.1 IPv4 extension headers

   IPv4 options were defined in [RFC0791] as the means of extending the
Show full document text