Too-frequent change of privacy address / ND monitoring

[Fernando Gont]

On 03/31/2013 07:56 PM, Daniel Roesen wrote:
> On Sun, Mar 31, 2013 at 02:57:20AM -0300, Fernando Gont wrote:
>>> Totally random crazy idea: could there be firewalls on some of these
>>> machines that are causing multicast RAs to be filtered but unicast RAs
>>> are fine (e.g. a unicast RA reply to an RS)?  
>>
>> Not sure if "firewalls", but I could think of swtiches that fail to do
>> MLD snoping and hence do not forward multicasted packets?
> 
> Switches not performing MLD will just flood multicast packets just like
> broadcast. I'm not sure that this is codified anywhere, but I certainly
> didn't see anything else yet.

I seem to recall that there are routers that behave otherwise: they
don't send the packets on any ports.

Cheers,
-- 
Fernando Gont
e-mail: fernando at gont.com.ar || fgont at si6networks.com
PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1