Re: [rohc] [Technical Errata Reported] RFC5858 (2277)

[Robert Stangarone <[e-mail]>]

I think that this suggestion would be most beneficial to a reader who
has a minimal exposure to ROHC and IPSEC.

I'm not entirely convinced that it adds much substance to the technical
discussion at hand on how a ROHC ICV may be used to prevent undetected
decompression failures.

That said, I don't think that it detracts from the point which is being
made in this section of the document, and therefore I have no objection
to this revision.

Bob

On 05/19/2010 06:14 AM, RFC Errata System wrote:
> 
> The following errata report has been submitted for RFC5858,
> "IPsec Extensions to Support Robust Header Compression over IPsec".
> 
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=5858&eid=2277
> 
> --------------------------------------
> Type: Technical
> Reported by: Alfred Hoenes <[e-mail]>
> 
> Section: 4.2, pg. 7
> 
> Original Text
> -------------
> 
>                 BEFORE COMPRESSION AND APPLICATION OF ESP
>                 ----------------------------
>           IPv4  |orig IP hdr  |     |      |
>                 |(any options)| TCP | Data |
>                 ----------------------------
> 
>                  AFTER ROHCOIPSEC COMPRESSION AND APPLICATION OF ESP
>                ------------------------------------------------------
>          IPv4  | new IP hdr  |     | Cmpr. |    | ROHC | ESP   | ESP|
>                |(any options)| ESP | Hdr.  |Data| ICV  |Trailer| ICV|
>                ------------------------------------------------------
> 
>    Figure 1.  Example of a ROHCoIPsec-Processed Packet
> 
> 
> Corrected Text
> --------------
> 
>                 BEFORE COMPRESSION AND APPLICATION OF ESP
>                 ----------------------------
>           IPv4  |orig IP hdr  |     |      |
>                 |(any options)| TCP | Data |
>                 ----------------------------
> 
>                  AFTER ROHCOIPSEC COMPRESSION AND APPLICATION OF ESP
>                ------------------------------------------------------
>          IPv4  | new IP hdr  |     | Cmpr. |    | ROHC | ESP   | ESP|
>                |(any options)| ESP | Hdr.  |Data| ICV  |Trailer| ICV|
> |              --------------------+===================+-------------
> 
> |  Figure 1.  Example of a ROHCoIPsec-Processed Packet ( +=====+ in
> |             the diagram indicates the plaintext that undergoes ESP
> |             protection; the packet actually contains the ciphertext)
> 
> 
> Notes
> -----
> Rationale:
>  The lower part of Figure 1 misrepresents the packet format;
>  in the general case (not ESP NULL encryption), the structure
>  of the inner part of the ESP tunnel mode packet is hidden by
>  encryption.
>  The graphical presentation therefore might mislead the reader.
>  The suggested Corrected Text tries to avoid this by graphically
>  marking this part of the packet and adding a short note that the
>  diagram represents the plaintext structure only.
> 
> Instructions:
> -------------
> This errata 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 (IESG)
> can log in to change the status and edit the report, if necessary. 
> 
> --------------------------------------
> RFC5858 (draft-ietf-rohc-ipsec-extensions-hcoipsec-08)
> --------------------------------------
> Title               : IPsec Extensions to Support Robust Header Compression over IPsec
> Publication Date    : May 2010
> Author(s)           : E. Ertekin, C. Christou, C. Bormann
> Category            : PROPOSED STANDARD
> Source              : Robust Header Compression
> Area                : Transport
> Stream              : IETF
> Verifying Party     : IESG
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