[6bone] DAD scope ??

[Pekka Savola]

On Sun, 5 Jan 2003, Pim van Pelt wrote:
> On Sat, Jan 04, 2003 at 05:56:58PM +0200, Pekka Savola wrote:
> | On Sat, 4 Jan 2003, Keshava Ayanur wrote:
> | > Duplicate Address detection (DAD) scope is only for 
> | > Or it appilies even for 
> | > 
> | > 	site - for site local address
> | > 	global - for global unicast address.
> | 
> | All.
>
> How would I do DAD for a global scope address ? 

The same as with link-local addresses.

> ICMPv6-ND does not seem
> appropriate and ICMPv6-echo is surely not what you want.

There seems to be some confusion here.  DAD is used to guarantee
uniqueness of an address on a _link_ (or possibly on a subnet) -- the same
for any kind of address, not uniqueness within a scope (e.g. DAD for a
global address does not mean it's globally unique).

Hope this clarifies.

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords