IPv6 duplicate DAD packets from Android clients?

Harald Terkelsen Harald.Terkelsen at hioa.no
Tue Oct 8 12:45:50 CEST 2013

On 10/08/2013 09:19 AM, Phil Mayers wrote:
> On 10/08/2013 01:02 AM, Erik Kline wrote:
>> It could be a bug, i.e. a client trying to do an NS for the router but
>> for some reason not using its link-local address (whacky race
>> condition where DAD for link-local hasn't completed?).
> Maybe; we've got a lot of Android clients on the network, and I'd
> assumed any bug would be more widespread, but I guess given the
> diversity of hardware and OS fiddling that goes on, it might be feasible
> that only 2 of ~3000 hosts would be affected.
> Maybe I'll try and identity the client OSes more accurately.

We are seeing many DAD attempts for the subnet-router anycast address on 
our wireless subnets. Each MAC address we have checked have been 
registered to HTC.

Harald Terkelsen

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