Matt, we went backwards and forwards many times on these timeouts
in earlier versions. I agree with what you say as a common sense
implementation heuristic, but I don't see how to cover it algorithmically
in the spec.

Since we are now at the stage of having resolved the IESG comments, do
you really want another text update?

   Brian

Matt Crawford wrote:
> 
> > http://www.ietf.org/internet-drafts/draft-ietf-ipv6-flow-label-08.txt
> 
> The host ought to wait distinctly more than 120 seconds before reusing
> a flow label, lest the last packet of the previous flow with that label
> be delayed by a second more than the first packet of the new flow and
> some router takes action based on the assumption that the two packets
> belong to the same flow.
> 
> The amount by which the wait time should exceed 120 seconds should
> naturally be determined by the maximum packet lifetime, but IPv6
> discarded that IPv4 notion.
> 
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-- 
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Brian E Carpenter 
Distinguished Engineer, Internet Standards & Technology, IBM 

NEW ADDRESS <[EMAIL PROTECTED]> PLEASE UPDATE ADDRESS BOOK

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