Hi Alex,
>I would agree with that only of flow label's role is an end-to-end, or
>host-to-host
>processing. But then why bother to carry it in the IPv6 main header,
>which is a header that
>is for hop-by-hop processing?
Carry in header because it can be also used for setup and traffic
engineering as RSVP is using it today with IPv6 (well not traffic
engineering but I believe it could). Also I don't want to add it below
the header because I can access the addr+flowlabel tuple immediately in
the header for uses that are not just for routing, as I suggested to
Thomas Eklund (TCP congestion as one example).
regards,
/jim
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