Hi Zhen, In general, the Tunnel-Entry Point and Tunnel-Exist Point should fragment and reassemble the oversize datagram. This mechanism is transport protocol agnostic and work for both UDP and TCP.
For TCP, we ³could² potentially avoid fragmentation by modify MSS option. However, we were required by the Chairs to remove this optimization from the draft in next update. Thanks, Yiu On 8/16/09 3:56 AM, "Zhen Cao" <[email protected]> wrote: > Hi Alain and All, > > I have a question on MTU issue in ipv4-in-ipv6 softwire. I notice > Sec.10.2 of DS-Lite draft has discussed the MTU problem. The draft > introduces one possible way of using TCP MSS option to avoid IP layer > fragmentation and reassembly. It is a good idea but how about the case > for UDP sockets? I suppose there should be a general way to handle the > MTU issue? Thanks for any explanation. > > Thanks and regards, > Zhen > _______________________________________________ > Softwires mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/softwires >
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