[OPSEC]Re: [Technical Errata Reported] RFC7707 (8119)

["Eric Vyncke (evyncke)" <[e-mail]>]

I concur with Bob: bits (including the ones in the first octet) are numbered starting from 0 and the X bit (formerly  called the Local/Global bit – see section 2.1.1 of RFC 9542) is the bit number 6.

I.e., this errata should be rejected (thanks Anvar for your interest in the document though)

Regards

-éric

From: Bob Hinden <[e-mail]>
Date: Wednesday, 25 September 2024 at 01:45
To: RFC Editor <[e-mail]>
Cc: Fernando Gont <[e-mail]>, [e-mail] <[e-mail]>, Warren Kumari <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>, [e-mail] <[e-mail]>
Subject: [OPSEC]Re: [Technical Errata Reported] RFC7707 (8119)
Hi,

I don’t think this errata is correct.   Looking at RFC4291 "Appendix A: Creating Modified EUI-64 Format Interface Identifiers” the bits in IEEE EUI-64 Identifiers are numbered starting from 00.

   The only change needed to transform an IEEE EUI-64 identifier to an
   interface identifier is to invert the "u" (universal/local) bit.  An
   example is a globally unique IEEE EUI-64 identifier of the form:

   |0              1|1              3|3              4|4              6|
   |0              5|6              1|2              7|8              3|
   +----------------+----------------+----------------+----------------+
   |cccccc0gcccccccc|ccccccccmmmmmmmm|mmmmmmmmmmmmmmmm|mmmmmmmmmmmmmmmm|
   +----------------+----------------+----------------+----------------+

The original text is correct.

Bob


> On Sep 24, 2024, at 3:33 PM, RFC Errata System <[e-mail]> wrote:
>
> The following errata report has been submitted for RFC7707,
> "Network Reconnaissance in IPv6 Networks".
>
> --------------------------------------
> You may review the report below and at:
> https://www.rfc-editor.org/errata/eid8119
>
> --------------------------------------
> Type: Technical
> Reported by: Anvar Durmanov <[e-mail]>
>
> Section: 4.1.1.1
>
> Original Text
> -------------
> 1.  The "Universal" bit (bit 6, from left to right) of the address is set to 1.
>
> Corrected Text
> --------------
> 1.  The "Universal" bit (bit 7, from left to right) of the address is set to 1.
>
> Notes
> -----
> The "Universal" bit is the bit #7 and not the bit #6.
>
> Instructions:
> -------------
> This erratum is currently posted as "Reported". (If it is spam, it
> will be removed shortly by the RFC Production Center.) Please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party
> will log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC7707 (draft-ietf-opsec-ipv6-host-scanning-08)
> --------------------------------------
> Title               : Network Reconnaissance in IPv6 Networks
> Publication Date    : March 2016
> Author(s)           : F. Gont, T. Chown
> Category            : INFORMATIONAL
> Source              : Operational Security Capabilities for IP Network Infrastructure
> Stream              : IETF
> Verifying Party     : IESG
>
> _______________________________________________
> OPSEC mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]