World IPv6 Only Day.

Joseph Jackson recourse at
Thu Jun 9 15:56:31 UTC 2011

Wouldn't the multicast flooding be just like broadcasts tho?  Some of
my sites don't have switches that will be upgraded or upgradeable to
software that will support IPv6 directly (at least not for a few
years).  Is that going to cause major headaches?  I under stand the RA
risks but the DHCPv6 snooping I'm not too clear on.

On Thu, Jun 9, 2011 at 1:55 AM, Tim Chown <tjc at> wrote:
> On 9 Jun 2011, at 05:36, Karl Auer wrote:
>> On Wed, 2011-06-08 at 17:37 -1000, Paul Graydon wrote:
>>> Dumb question.. what does the switch (L2) have to do with IPv6 (L3), or
>>> is it one of those 'somewhere in between the two' things?
>> Well, a modern switch should work fine, even if not directly IPv6 aware,
>> but it won't understand multicast and will generally flood multicast
>> frames to all interfaces. So definitely stipulate IPv6 capability, even
>> for switches....
> And it won't have DHCPv6 snooping, or tools to mitigate rogue RAs.
> Tim

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