On Jul 28, 2009, at 2:24 AM, Lars Eggert wrote:
Hi,
On 2009-7-27, at 18:46, Rémi Després wrote:
A simple solution would IMHO be to complement to the UDP rule in IPv6
as follows:
- IPv6 hosts MUST create UDP datagrams with non-zero checksums.
(Nothing new here.)
- IPv6 hosts SHOULD accept UDP datagrams with zero checksum.
(Application of the classic principle "be strict in what you send,
tolerant in what you receive").
- IPv4 to IPv6 translators that receive UDP datagrams having zero
checksums MAY keep these checksums in translated datagrams.
as an individual, I prefer something along the lines of draft-
fairhurst-6man-tsvwg-udptt instead.
This draft and http://tools.ietf.org/html/draft-eubanks-chimento-6man-00
are still open and will be discussed at the 6man meeting Wednesday.
Basically, one prescribes no checksum for the "outer" packet in
IPv6 encapsulations, the other a fixed checksum per flow.
I would urge people interested in this to attend as a decision may be
made soon.
Regards
Marshall
Lars
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