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Re: [Roll] how to solve flow from RPL-aware-leaf to non-RPL-aware-leaf

Michael Richardson <mcr+ietf@sandelman.ca> Thu, 25 February 2016 14:41 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Date: Thu, 25 Feb 2016 09:41:19 -0500
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Subject: Re: [Roll] how to solve flow from RPL-aware-leaf to non-RPL-aware-leaf
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Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
    > The change Nb2 reverses a decision that makes sure that if a packet
    > with an HbH header / RPI escapes the RPL domain, it is immediately
    > discarded. This impact has to be weighted.

It would only be discarded if the receiving machine does not speak RPL/RPI.
If by chance, it does understand that header, then would not discard it by
2460 rule.  It could be configured to drop packets with RPI in them.

So the protection isn't that great in my opinion, while the cost is pretty
significant.   But, I agree that it's a concern.

We have the opportunity in 6LoRH to effectively make other incompatible
changes since deploying 6LoRH will be an incompatible change.


--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-

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