AD review draft-ietf-emu-eap-edhoc-06

The draft looks generally fine and clear. I have one question and
one comment


 0                   1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     Code      |   Identifier  |            Length             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     Type      |  R  |S|M|  L  |      EDHOC Message Length     ~
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                          EDHOC Data                           ~
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Figure 7: EAP-EDHOC Request and Response Packet Format
4.1. EAP-EDHOC Request Packet



    The EDHOC Message Length field can have a size of one to four octets
    and is present only if the L flag bits represent a value greater than
    0. This field provides the total length of the EDHOC message that is
    being fragmented. When there is no fragmentation, it is not present.

EDHOC Data:

    The EDHOC data consists of the whole or a fragment of the transported
EDHOC message.

How does one determine the length of the EDHOC Message Length field?



I think RFC4137, RFC5216, RFC6677 should probably be normative references ?

Paul
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