Re: [dhcwg] draft-ietf-dhc-dhcpv6-opt-nisconfig-05.txt

(I'm feeling this particular discussion is not appropriate for this
list.  So, this will be my last message on this topic)

>>>>> On Wed, 11 Feb 2004 19:27:36 +0530, 
>>>>> Vijayabhaskar A K <vijayak@india.hp.com> said:

> draft-itojun-v6ops-v4mapped-harmful says:
> o IPv6 nodes SHOULD NOT generate packets that contain IPv4-mapped
>   addresses in any field.  (As a particular exception, it MAY be
>   acceptable for fields referring to third-party nodes to contain
>   IPv4-mapped addresses.  Implementors must ensure that, where this is
>   allowed, it is done with great care.)

> I guess, our situation perfectly falls in this..

Perhaps (I guess you mean the "exception" by "this").  But to be sure,
we'll have to make several points clearer (IMO):

- whether this document is adopted by some wg to be published (if not,
  we won't have to worry about this in the first place)

- while the document say "SHOULD NOT" for any field of an IPv6 packet
  (which I believe includes the upper layer header and its payload),
  the document only talks about the problematic cases where mapped
  addresses are used in the source/destination fields of an IPv6
  header.  If these fields are only place that can cause a problem,
  we'll be able to eliminate the "SHOULD NOT" completely.

- if we have enough reason to keep the "SHOULD NOT", then the above
  statement should be clearer, including what exactly "any field"
  means or how we can ensure "it is done with great care".

					JINMEI, Tatuya
					Communication Platform Lab.
					Corporate R&D Center, Toshiba Corp.
					jinmei@isl.rdc.toshiba.co.jp

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