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Hi all,
If an IPv4 packet is to be carried over an
IPv6 packet then the next header field value should be set to 4 (same as
IP-in-IP)????
RFC 1700 uses the term IP-in-IP which means
IPv4-in-IPv4.
RFC 2473 makes no mention about the value to be
used, though in all fairness its value 4.
Section 5
" Next
Header:
The next header value according to [IPv6-Spec] from the Assigned Numbers RFC [RFC-1700 or its successors]. For example, if the original packet is an IPv6 packet, this is set to: - decimal value 41 (Assigned Next Header number for IPv6) - if there are no tunnel extension headers. - value 0 (Assigned Next Header number for IPv6 Hop by Hop Options extension header) - if a hop by hop options extension header immediately follows the tunnel IPv6 header. - decimal value 60 (Assigned Next Header number for IPv6 Destination Options extension header) - if a destination options extension header immediately follows the tunnel IPv6 header. " But shouldnt this point be clarified in some RFC
(1700 or in 2473)?
regards
radhakrishnan
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