On 11/25/09 9:52 AM, "Hui Deng" <[email protected]> wrote: > > if the application generate IPv4 packet, and finally you will be use > IPv6 to transmit this packet, > isn't this a translation? > > --> No, this is tunneling. You preserver the v4 header. If header compression > removes it, it it put back in place on the receiving side > > Secondly, when the receiver host got this packet, how could he know > this is normal IPv6 packet > or IPv4-translated-IPv6 packet? > > --> This is not translated, but tunneled. The packet arrives to a tunnel > interface that will de-capsulate the v6 header and present the v4 packet to > the v4 app. Think about 6to4 or 6rd, but with the reverse encap. > > - Alain. >
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