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RFC 5216, "The EAP-TLS Authentication Protocol", March 2008

Source of RFC: emu (sec)

Errata ID: 2510
Status: Held for Document Update
Type: Editorial
Publication Format(s) : TEXT

Reported By: Min Pae
Date Reported: 2010-09-03
Held for Document Update by: Sean Turner

Section 3.1 says:

The L bit (length included) is set to indicate the presence of the
four-octet TLS Message Length field, and MUST be set for the first
fragment of a fragmented TLS message or set of messages.

It should say:

The L bit (length included) is set to indicate the presence of the
four-octet TLS Message Length field, and MUST be set for the first
fragment of a fragmented TLS message.  The L bit MAY be included
in all fragments of a fragmented TLS message, but if included the
TLS Length MUST represent the entire length of the TLS message.

Notes:

The lack of definition for what to do with the L bit and the TLS length field for TLS fragments other than the first fragment is leaving the door open to divergent behavior for whether the L bit and length field are included, what the length contains if they're included, and how to interpret it.

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