RFC 2529 (rfc2529) - Page 1 of 10
Transmission of IPv6 over IPv4 Domains without Explicit Tunnels
Alternative Format: Original Text Document
Network Working Group B. Carpenter
Request for Comments: 2529 IBM
Category: Standards Track C. Jung
3Com
March 1999
Transmission of IPv6 over IPv4 Domains without Explicit Tunnels
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (1999). All Rights Reserved.
Abstract
This memo specifies the frame format for transmission of IPv6 [IPV6]
packets and the method of forming IPv6 link-local addresses over IPv4
domains. It also specifies the content of the Source/Target Link-
layer Address option used in the Router Solicitation, Router
Advertisement, Neighbor Solicitation, and Neighbor Advertisement and
Redirect messages, when those messages are transmitted on an IPv4
multicast network.
The motivation for this method is to allow isolated IPv6 hosts,
located on a physical link which has no directly connected IPv6
router, to become fully functional IPv6 hosts by using an IPv4 domain
that supports IPv4 multicast as their virtual local link. It uses
IPv4 multicast as a "virtual Ethernet".
Table of Contents
1. Introduction....................................................2
2. Maximum Transmission Unit.......................................2
3. Frame Format....................................................3
4. Stateless Autoconfiguration and Link-Local Addresses............3
5. Address Mapping -- Unicast......................................4
6. Address Mapping -- Multicast....................................4
7. Scaling and Transition Isues....................................5
8. IANA Considerations.............................................6
9. Security Considerations.........................................6
Carpenter & Jung Standards Track