even if fragmentation done only at the source,
it may have this problem because,.....
say IP header(with extensions) is of size 4k!!!!!
it's framented for the first time.....
you get three pieces..
yu add header to each piece...
each piece is now again >4k...
so, fragmentation again....
Does this problem occur..
Thanks for the sharp response
Stig Venaas wrote:
> On Tue, Jun 05, 2001 at 07:08:18AM +0900, Jun-ichiro itojun Hagino wrote:
> > > I have a small doubt regarding fragmentation in IPv6.
> > >In Ipv6, even header can be fragmented.
> > >(with exception that fixed part of header should not be fragmented).
> > >..................
> > >If a packet's header is fragmented, a new packet header is added to each
> > >fragment.But, once agin this new packet header should be fragmented..And
> > >this goes on recursively...
> >
> > packet fragmentation occurs only once, at the originating node.
> > so there's no need to worry about the above scenario.
>
> Also note that the minimum MTU for IPv6 is 1280 bytes.
>
> Stig
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