Hi all,
    I might be totally wrong in this but I see that there are two
contradicting statements in RFC1883 for IPv6. Can somebody please explain

Page 7

statement a:
   Each extension header should occur at most once, except for the
   Destination Options header which should occur at most twice (once
   before a Routing header and once before the upper-layer header).

statement b:
   IPv6 nodes must accept and attempt to process extension headers in
   any order and occurring any number of times in the same packet,
   except for the Hop-by-Hop Options header which is restricted to
   appear immediately after an IPv6 header only.

I am sorry if this has already been raised as a question and answered.

Thanks in advance,
Suresh

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