Re: [DNA] [Issue X] LinkID v.s. Landmark Prefix

[James Kempf <Kempf@docomolabs-usa.com>]

ok. I admit this is a crude one but all I can think of right now.
(Because it's not clear to me how a host base its decision
on CompleteRA, I switch to landmark one.)

Assume a link with two routers R1 and R2 and a host H.
R1 advertises Prefix1 and R2 Prefix2.

R2 stops advertising Prefix2 and starts advertising Prefix3.
R2 announces the prefix change by sending an RA but
both R1 and H don't receive it.

Then H happens to change its AP in the same link
and send an RS with landmark Prefix2. It also happens that
R2 replies first and sends an RA with NO and Prefix3.
H falsely assumes a link change.

jak>> So what is the realistic probability of this actually happening? One
could use this same kind of search for corner cases to shoot down oDAD, yet
it is on the verge of becoming a PS RFC and we are planning on using it for
DNA.

            jak