This erratum should be rejected since the text does not appear in RFC
5343. It seems the text is found in 5340, 'OSPF for IPv6', and this is
a typo when the erratum was entered.

/js

On Sun, Sep 17, 2023 at 10:49:29PM -0700, RFC Errata System wrote:
> The following errata report has been submitted for RFC5343,
> "Simple Network Management Protocol (SNMP) Context EngineID Discovery".
> 
> --------------------------------------
> You may review the report below and at:
> https://www.rfc-editor.org/errata/eid7645
> 
> --------------------------------------
> Type: Technical
> Reported by: Owen DeLong <[email protected]>
> 
> Section: A.3.3
> 
> Original Text
> -------------
> Section A.3.3 (in part) reads:
> 
>  Interface MTU
>       The size in bytes of the largest IPv6 datagram that can be sent
>       out the associated interface without fragmentation.  The MTUs of
>       common Internet link types can be found in Table 7-1 of [MTUDISC].
>       Interface MTU should be set to 0 in Database Description packets
>       sent over virtual links.
> 
> 
> Corrected Text
> --------------
>  Interface MTU
>       The size in bytes of the largest IPv6 datagram that can be sent
>       out the associated interface without fragmentation.  The MTUs of
>       common Internet link types can be found in Table 7-1 of [MTUDISC].
>       Interface MTU should be set to 0 in Database Description packets
>       sent over OSPF virtual links. This rule should not be applied to tunnel
>       or other software interfaces.
> 
> 
> Notes
> -----
> OSPF Virtual links carry only OSPF packets so MTU negotiation is not needed 
> and this provision makes sense. For interfaces that have an actual MTU, even 
> though they may be "virtual" interfaces, they are not "virtual links" in the 
> intended meaning of this paragraph. As such, this change will provide 
> clarification and remove ambiguity from the current standard. At least one 
> popular router vendor implements this RFC as MTU = 0 sent on all GRE 
> interfaces which results in incompatibilities with most other router 
> platforms which expect an actual value. The router vendor points to this 
> provision in the RFCs as justification for their implementation. It is 
> (arguably) a legitimate, if nonsensical interpretation of the existing text.
> 
> Instructions:
> -------------
> This erratum is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party  
> can log in to change the status and edit the report, if necessary. 
> 
> --------------------------------------
> RFC5343 (draft-ietf-opsawg-snmp-engineid-discovery-03)
> --------------------------------------
> Title               : Simple Network Management Protocol (SNMP) Context 
> EngineID Discovery
> Publication Date    : September 2008
> Author(s)           : J. Schoenwaelder
> Category            : PROPOSED STANDARD
> Source              : Operations and Management Area Working Group
> Area                : Operations and Management
> Stream              : IETF
> Verifying Party     : IESG

-- 
Jürgen Schönwälder              Constructor University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <https://constructor.university/>

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