Michael Thomas wrote:
>
> Francis Dupont writes:
> > In your previous mail you wrote:
> >
> > If the label type is set to the basic type, IPv6 routers SHOULD NOT
> > rewrite or alter the flow label value.
> >
> > => even if the source is the best place to put a non-zero/non-default
> > value I'd like to enable one of the first routers to set the flow label
> > on the behalf of a dumb source. (PS: to change to basic type and null
> > value is not enough because we need to catch the "on the behalf of the
> > source" too).
>
> Slippery slope! Slippery slope!
>
> Most of the lossage floating around here is due to
> the network trying to be intelligent for dumb hosts.
>
> Long live the dumb network!
I agree. We were actually *forced* into allowing the network to
rewrite the DSCP in the diffserv case, because of having to deal
with a non-TOS-aware IPv4 legacy. And as Francis has so eloquently
stated, having the network guess the correct value is not a clean
solution - it's just the only one we have.
If we can use the flow label at all, IMHO we should *not* cater for
a non-flow-label-aware IPv6 legacy!
Brian
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