Re: [Mipshop] Re: New revision of draft-ietf-mipshop-fmipv6-rfc4068bis

[Vijay Devarapalli <vijay.devarapalli at azairenet.com>]

Hi Rajeev,

Rajeev Koodli wrote:
> I was only providing the design rationale.. 
>
> In sum, a) proxy ND is used to defend an address like in an HA (it could 
> also be used to maintain a pool of duplicate-free addresses for which 
> the protocol provides a transport message for), and b) DAD could be 
> turned off depending on specific deployment consideration (i.e., address 
> collision is not an issue)

I think this should be explained in more detail. How about the
following?

The NAR checks if the address is unique before starting
defending it. The NAR sends a DAD (neighbor solicitation) message
for the NCoA to check if the address is unique on the NAR link.
If there are other mechanisms by which the NAR can figure out if
the address is unique or if it is known that the probability of
collisions is very low or non-existent, then the parameter
DupAddrDetectTransmits is set to 0 on the NAR.

Vijay


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