[ipv6hackers] DAD and Link-Local

[daniel.bartram at bt.com]

Cheers all, appreciate the comments.

Kind Regards,

Dan.

----- Original Message -----
From: Owen DeLong [mailto:owend at he.net]
Sent: Friday, July 13, 2012 07:35 PM
To: IPv6 Hackers Mailing List <ipv6hackers at lists.si6networks.com>
Subject: Re: [ipv6hackers] DAD and Link-Local

DAD can be disabled if you are sure that there is no chance of collision.

With randomly chosen IID, you're not sure, but it's highly unlikely.

With MAC-based IID, you can check once and be sure until the hardware changes.

On a point-to-point link disabling DAD is probably harmless even if there is a collision.

Owen

On Jul 13, 2012, at 6:49 AM, <daniel.bartram at bt.com> <daniel.bartram at bt.com> wrote:

> All,
> 
> After some advice...
> 
> Aware that DAD is performed on link-local as well as global addresses to ensure uniqueness, but if the link-local is a randomly generated value, or even the IID for that matter, on a P2P link using only link-local addresses, what are the chances of those addresses ever matching? In which case, can DAD be disabled?
> 
> Dan.
> _______________________________________________
> Ipv6hackers mailing list
> Ipv6hackers at lists.si6networks.com
> http://lists.si6networks.com/listinfo/ipv6hackers

_______________________________________________
Ipv6hackers mailing list
Ipv6hackers at lists.si6networks.com
http://lists.si6networks.com/listinfo/ipv6hackers