Hi,

I had raised this earlier in December 2005
http://www1.ietf.org/mail-archive/web/ipv6/current/msg06020.html .

The definition of IPv6 fragment is not clear.  Infact different
protocols assume it differently, example are IPsec and SIIT. I do not
have implementations to play with, however I feel we need to close
this issue along with other related issues, like tiny fragments. The
discussion there was:

"
Vishwas Manral wrote:

I have a doubt regarding the fragment header. Why do we need the M
flag in the "fragment header" at all for IPv6? Having the fragment
header itself would tell it's a fragment and would distinguish between
the first fragment and a non-fragment.

In IPv4 we did not have a fragment header, so the M flag was logical
to have for distinguishing the first and a non fragment.

That said; how should the case where we have the fragment header and
both the Fragment Offset and the M flag is 0 be treated?"

Thanks,
Vishwas

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