Re: [DNA] Issue about multiply connected to the same link and DNAbeing per-interface or not (was Re: WG LC comments ondraft-ietf-dna-goals-01.txt)

[Pekka Nikander <pekka.nikander@nomadiclab.com>]

> We are in a disagreement.

Somewhat, yes.  But I don't think the disagreement is that bad.  :-)

<snip>

>>>    DNA scheme is run per interface because some IP configuration, 
>>> such
>>>    as IPv6 address, is interface specific.  When a host has multiple
>>>    interfaces, each interface separately check for link change to
>>> verify
>>>    each one's IP configuration.
>>
>> As I wrote above, I don't agree with this.  I think this is 
>> unnecessary
>> in the goals document.  I don't think we should include it.
>> OTOH, if other's in the WG think otherwise, I won't insist.
>
> Let me summarize my thoughts.
>
> In case there are multiple interfaces in a host, each interface should
> separately detect the identity of the currently attached link for 
> itself.
>
> Do you disagree with this? If so, we are in a serious disagreement
> and would better find a way to resolve this.

Well, I don't really disagree with you at that point.  However,
IMHO we would needlessly limit ourselves if we, in the goals
document, state that DNA schemes are (always) run per interface.
I would easily agree that they are "typically" or even "almost
always" run per interface.  However, there are cases where that
may not hold.  Hence my concern.

But I'd like to hear other opinions on this.

--Pekka