Re: [Roll] Discussion/Comments For draft-ietf-roll-trickle-mcast-03

"Jonathan Hui (johui)" <johui@cisco.com> Mon, 28 January 2013 17:06 UTC

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From: "Jonathan Hui (johui)" <johui@cisco.com>
To: Abdussalam Baryun <abdussalambaryun@gmail.com>
Thread-Topic: [Roll] Discussion/Comments For draft-ietf-roll-trickle-mcast-03
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Date: Mon, 28 Jan 2013 17:06:38 +0000
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Cc: "richard.kelsey@silabs.com Kelsey" <richard.kelsey@silabs.com>, roll WG <roll@ietf.org>
Subject: Re: [Roll] Discussion/Comments For draft-ietf-roll-trickle-mcast-03
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IPv6-in-IPv6 encapsulation is not required if the IPv6 Destination Address is the MPL Domain Address.

But whether or not encapsulation is used, Section 10.1 specifies:

     The IPv6 Destination Address MUST be set to the MPL Domain Address
      corresponding to the MPL Domain.

And as Section 2 specifies, the MPL Domain Address is a multicast address.

--
Jonathan Hui

On Jan 28, 2013, at 9:01 AM, Abdussalam Baryun <abdussalambaryun@gmail.com> wrote:

> On 1/28/13, Jonathan Hui (johui) <johui@cisco.com> wrote:
>> 
>> MPL forwards IPv6 multicast messages using IPv6 multicast messages (hence
>> the IPv6-in-IPv6 encapsulation).
>> 
> 
> So I understand from your reply that MPL uses always IPv6 multicast
> encapsulation for its data. I thought before it was only outside the
> MPL domains, that it will use IP-in-IP
> 
> AB
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