Re: [Editorial Errata Reported] RFC5952 (4986)

[Bob Hinden <[e-mail]>]

Hi,

> On Mar 31, 2017, at 10:52 AM, RFC Errata System <[e-mail]> wrote:
> 
> The following errata report has been submitted for RFC5952,
> "A Recommendation for IPv6 Address Text Representation".
> 
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=5952&eid=4986
> 
> --------------------------------------
> Type: Editorial
> Reported by: Julian de Prado <[e-mail]>
> 
> Section: 2.2
> 
> Original Text
> -------------
> 'A special syntax is available to compress the zeros. The use of
> "::" indicates one or more groups of 16 bits of zeros.'
> 
> 
> Corrected Text
> --------------
> 'A special syntax is available to compress the zeros. The use of
> "::" indicates two or more groups of 16 bits of zeros.'
> 
> 

That is not correct.  RFC4291, where the “::” syntax is defined, says in Section 2.2:

   2. Due to some methods of allocating certain styles of IPv6
      addresses, it will be common for addresses to contain long strings
      of zero bits.  In order to make writing addresses containing zero
      bits easier, a special syntax is available to compress the zeros.
      The use of "::" indicates one or more groups of 16 bits of zeros.
      The "::" can only appear once in an address.  The "::" can also be
      used to compress leading or trailing zeros in an address.

Bob


> 
> Notes
> -----
> "indicates one" should be written as "indicates two"
> 
> for example:
> 'A special syntax is available to compress the zeros. The use of
> "::" indicates two or more groups of 16 bits of zeros.'
> 
> 2001:db8:aaaa:bbbb:cccc::1
> 
> 2001:db8:aaaa:bbbb:cccc:0:0:1
> 
> Instructions:
> -------------
> This erratum is currently posted as "Reported". If necessary, please
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> 
> --------------------------------------
> RFC5952 (draft-ietf-6man-text-addr-representation-07)
> --------------------------------------
> Title               : A Recommendation for IPv6 Address Text Representation
> Publication Date    : August 2010
> Author(s)           : S. Kawamura, M. Kawashima
> Category            : PROPOSED STANDARD
> Source              : IPv6 Maintenance
> Area                : Internet
> Stream              : IETF
> Verifying Party     : IESG