RFC 3168, "The Addition of Explicit Congestion Notification (ECN) to IP", September 2001

Note: This RFC has been updated by RFC 4301, RFC 6040, RFC 8311

Errata ID: 4754
Status: Held for Document Update
Type: Editorial
Publication Format(s) : TEXT
Reported By: Bob Briscoe
Date Reported: 2016-07-31
Held for Document Update by: Mirja Kühlewind
Date Held: 2020-03-04

Section Header block says:

Updates: 2474, 2401, 2003, 793

It should say:

Updates: 2474, 2401, 2003, 2473, 793

Notes:

RFC 3168 updates RFC 2473 but does not indicate this in its header block.

Specifically, Section 9 of RFC 3168 defined processing of the ECN field for Encapsulated Packets, which updated section 6.4 of RFC 2473, where the creation of the "IPv6 Tunnel Packet Traffic Class" was specified. RFC3168 also updated the decapsulation behaviour of the ECN field in an IPv6 tunnel header, which had not been specified in RFC2473.

Note 1: As well as tagging RFC3168 with this erratum, RFC2473 needs to be tagged (in the RFC index and associated tools outputs) to indicate that it is updated by RFC3168.

Note 2: Originally, the "Updates:" header of RFC3168 did not contain "2003", which was added as a result of Errata ID 2660.

Note 3: The first sentence of section 9.1 in RFC3168 should also be modified as follows:
Original text:
The encapsulation of IP packet headers in tunnels is used in many
places, including IPsec and IP in IP [RFC2003].
Corrected text:
The encapsulation of IP packet headers in tunnels is used in many
places, including IPsec and IP in IP [RFC2003, 2473].
Comment:
Nowadays RFC2473 would be a normative reference, but RFC3168 pre-dated the categorisation of references into normative and informative.

Note 4: Section 9 of RFC3168 has since been updated by RFC6040. Nonetheless, that is already correctly identified in RFC6040.

This reported errata has be moved to "Held for Document Update". While the reported problem is correct and needs to be addressed, it is not just an errata but a larger oversight at publication time.

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