On 04-Jul-19 09:03, Pascal Thubert (pthubert) wrote:
> Sorry Brian I miss your point.
>
> The discussion here is to find a way for the node to autoconf an address and
> then notice the router(s) proactively so the ND NCE is ready when the first
> packet comes from the outside for this node.
>
> I agree wholeheartedly with Jen’s requirement.
Yes, I am not against satisfying this requirement, but we have a considerable
legacy of stacks that don't do this - so until that legacy has vanished, the
routers need to deal with it somehow.
> I agree less with the idea of overstretching ND as it stands to achieve this,
> for reasons I gave already. So prepopulate the NCE, yes, but do it right with
> protocol elements that guarantee a state that is accurate, secure, and
> persistent for a committed lifetime, not with yet another patch to the old
> structure.
>
> I’m interested to have a parallel discussion on where RFC 8505 can not apply.
> In the products and use cases I’m aware of, it could, since we are actually
> faking it by snooping ND and DHCP to achieve similar but less accurate
> results.
So if you are advocating a generalisation of RFC8505 to non-6lo LANs, that's
certainly a discussion we could have, IMHO.
Regards
Brian
>
> Take care,
>
> Pascal
>
>> Le 3 juil. 2019 à 22:39, Brian E Carpenter <[email protected]> a
>> écrit :
>>
>> On 03-Jul-19 20:13, Pascal Thubert (pthubert) wrote:
>>
>> ...
>>> I'm baffled that the reactive ND is still the official technique for IPv6
>>> lookup at 6MAN.
>>
>> How can it be otherwise when a node can give itself a new address at any
>> time without notice?
>>
>> I'm not arguing with you about RFC 6775/8505 networks, but that doesn't
>> apply everywhere.
>>
>> Brian
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