On 2/5/13 6:56 AM, Warren Kumari wrote:
On Feb 5, 2013, at 9:01 AM, [email protected] wrote:
With these specifications, it is impossible on a SLAAC link that two hosts that
have universal-scope addresses (necessarily different if they communicate at
the MAC layer), would have conflicting IIDs at the IP layer if they derive them
from MAC addresses.
Impossible if the MAC addresses are indeed unique. That is correct for
*almost* all cases. But not 100%.
Yup, there have been multiple instances where NIC vendors have accidentally (or
possibly intentionally) recycled MACs.
And, unfortunately with the increase in virtulization (and cloning of virtual
machines) the chances of identical MACs increases dramatically…
or because you recycled your vrrp6 interface config.
W
Steinar Haug, AS 2116
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