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List:       ipng
Subject:    [M/O document] RA Absence as special case.
From:       "S. Daniel Park" <soohong.park () samsung ! com>
Date:       2004-08-30 11:03:52
Message-ID: EDELKJDGPGNIPOAOHMNPEEFMGDAA.soohong.park () samsung ! com
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Hi all

In case of absence of default router, we have simply added 
below text to clarify this case. Now I'd like to get a feedback
and comment on this proposal, and further take a consensus.
Let us know your view on this...:-)


Suggestion 1:
==================
RA Absence

We can imagine that if no RA is available.  Originally, [RFC2462]
made a rule of "invoke the stateful protocol if there is no router".
In this sense, it should be considered as a special case of RA with
the M/O flag.  In addition, in the absence of a router,
[I-D.ietf-ipv6-node-requirements], said those IPv6 nodes that use
DHCP for address assignment MUST initiate DHCP to obtain IPv6
addresses and other configuration information.  

If no RA appears, a node MUST initiate DHCPv6 service as 
[RFC3315] to get both address and configuration information 
regardless of M/O-Policy. The specific method of how a node 
recognize RA absence is out of scope of this document.
==================

OR

Suggestion 2:
==================
RA Absence

We can imagine that if no RA is available.  Originally, [RFC2462]
made a rule of "invoke the stateful protocol if there is no router".
In this sense, it should be considered as a special case of RA with
the M/O flag.  In addition, in the absence of a router,
[I-D.ietf-ipv6-node-requirements], said those IPv6 nodes that use
DHCP for address assignment MUST initiate DHCP to obtain IPv6
addresses and other configuration information.  

If no RA appears, a node MUST behave as if it receives an RA 
with the M flag is ON and the O flag is OFF according to its
policy values. The specific method of how a node recognize RA
absence is out of scope of this document.
==================

Thanks in advance.


- Daniel (Soohong Daniel Park)
- Mobile Platform Lab. Samsung Electronics.

 

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