Vishwas Manral wrote:
> Hi Suresh/ Vlad,
> 
> For SIIT the fragment header is used to signal the ability to
> fragment, it does not state it is a fragment itself.

First, this only happens when the IPv4 host does not support path mtu
discovery (DF bit is 0).  In this case, inserting a fragment header
at the translator in essence performs the fragmentation that was
requested by the sender.  I just so happens that in this case the
fragment might have offset and M flag set to 0.

> 
>> A fragment with offset 0 and M flag 0 is just treated as the ONLY
>> fragment. No harm don
> But there are different policies for fragments, including some that
> drop fragments. It is not the correct behavior, I feel the definition
> of a fragment should be clarified.

Now you are getting in policies outside of the definition.  The definition
does not have to encompass all eventual uses.  Otherwise we'll be updating
a lot more specs.

-vlad


--------------------------------------------------------------------
IETF IPv6 working group mailing list
[email protected]
Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6
--------------------------------------------------------------------

Reply via email to