ipv6 network fail (newbie alert)

[David Magda]

On Mar 21, 2013, at 17:12, Noel Butler wrote:

>> More than that, I think. Assigning static addresses is a clear invitation
>> to assigning duplicate addresses by a slip of the keyboard. In any case,
>> you can't prevent unruly hosts performing SLAAC. DAD is unavoidable.
>> 
>>   Brian
> 
> Depends on your usage, my only IPv6 usage is on servers, surely you are
> not going to suggest they get anything other than static.
> If it's a home network, you may have a valid point.

Isn't NDP used for IP-to-MAC mapping (RFC 4861, §4.3)? There's also MTU discovery (§4.2, MTU option (§4.6.4)), and neighbor unreachability detection (§7.3).

One can certainly limit/filter some of the packets accepted, but completely blocking NDP will likely break things.