Mitigating Neighbor Discovery Based Denial of Service Attacks

Document Type Expired Internet-Draft (individual)
Author Joel Halpern 
Last updated 2012-04-19 (latest revision 2011-10-17)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


It has been observed that with the large space of IPv6 addresses within a subnet, remote attackers can send packets that saturate a rotuers ND cache, and potentially saturate a subnet with ND Soliciation messages as well. Some operational techniques and small protocol adjustments have been proposed that can help alleviate this problem. This draft proposes a slightly more drastic optional behavior for routers, which can nearly eliminate this problem.


Joel Halpern (

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