> Routing header works so that the next hop is always written to destination
> address field and the rest of the path to routing header fields.
>
> Problem with this is that:
> 1) it's impossible to authenticate using AH or the like as the header is
> rewritten all the time
AH has provisions for mutable but predictable data such as the
contents of routing headers. See rfc2402 Appendix 2.
-Sebastien
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