DAD - on or off

[Koch, Andrew]

On Tuesday, 26 Jun 2013, Mikael Abrahamsson wrote:
> Turning off DAD is good on point-to-point links anyway. It's (in places)
> common practice to "loop" these, triggering DAD for some or all addresses
> configured and then it won't come out of DAD for those unless the
> interface is shut/no shut.
> 
> I had this happen to me on POS interfaces a few years back.

At least on the ethernet circuits that I have worked on, terminating to a Cisco IOS-XR router, you don't need to shut/no shut the interface.  You can use "clear ipv6 duplicate addresses ten0/0/0/0" to clear the duplicate indicator and allow DAD to try again.

Andy Koch