[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Prior art on IPv6-in-IPv4 tunneling
It has very recently been brought to my attention that a defining work
on IPv6-in-IPv4 tunneling exists dating back to Spring 1998 and entitled:
"Virtual Ethernet: A New Approach to IPv6 Transition"
The work was prepared by a UCLA Masters Student named Quang Nguyen
who was advised by Dr. Lixia Zhang. The document describes the case
of intra-site tunneling when IPv4 multicast is deployed (as in 6over4)
but also gives a detailed study of the case in which IPv4 multicast is
absent (as in isatap).
Upon examining the document, I realized that concepts presented in
the isatap specification match up very closely with the prior art so
I contacted Dr. Zhang to arrange a meeting to discuss the similarities.
Dr. Zhang and I were able to meet today, and she has requested that an
acknowledgement to her student and a reference to the document be given
in the specification. This action will be taken asap in the next isatap
The document in question can be found at:
I would encourage other v6ops/ngtrans authors to examine this work for
prior art. For example, the isatap "automatic deprecation" and teredo
"automatic sunset" functions seem to have existing precedence in this