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RFC 6214, "Adaptation of RFC 1149 for IPv6", April 2011


Errata ID: 2854
Status: Rejected
Type: Technical
Publication Format(s) : TEXT

Reported By: Stéphane Bortzmeyer
Date Reported: 2011-07-06
Rejected by: Nevil Brownlee
Date Rejected: 2013-05-27

Section 3.2 says:

The whole section about the frame format and the lack of 
Layer2-type, and the technical choice behind it.

It should say:

RFC 6274, section 3.1 explicitely forbids this technique and 
requires that an IP implementation checks the version number, 
which will prevent RFC 6214 to work.


Yes, I know that this RFC was published on April 1st... Nevertheless, this is an interesting technical point.

RFC 6274 was published in July 2011, three months after RFC 6214.
Further, RFC 6274 is only Informational. The recommendation that you
mention asserts that "in practice different versions of IP are
identified by a different Protocol Type (e.g., EtherType in the case
of Ethernet) number in the link-layer protocol header." That assertion
is untrue of conforming implementations of RFC 6214, which, apparently,
the authors of RFC 6274 failed to consider.

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