Hi Frank,

> ...FB: Well, the concern is a more general one. I'm not disagreeing that we
> might be able to have flow policies even with the new use of the flow label.
> The thing that I think requires more discussion is whether people see a need
> for using the IPv6 flow label in the core of their network, even if GI-DS-lite
> with this new encapsulation would be used within the very same deployment. If
> there is such a use, the new encap might create challenges... - which we
> should understand upfront. I don't know all the foreseen use-cases for the
> flow label, hence my earlier question on whether the question has been taken
> to a larger audience (especially 6man).
> 
I don't disagree, but the ip address used by the CPE is only used by the CPE
sourced traffic, this is why I think it is safe to be used. One can consider
all the IPv4 traffic of a household is a flow (for encap). In this setup,
this is rather true and should not affect other flow label for native v6
traffic. 

I also want to hear more inputs. This is why I moved this discussion to the
mailing list. We will also post this question to 6man.

>> 
>> In the end, we want to propose an simple alternative rather than
>> enforcing the operators to use GRE or MPLS.
> 
> ...FB: IMHO this is not about enforcing, this is more about ensuring that we
> don't break anything. Once we're sure that we don't break anything and can
> also articulate the value of the new encap, I personally don't see any issues
> with expanding the set of encap types.
> 
Yes, this is my belief too.

Thanks,
Yiu

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