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IETF RFC 6583
[ACTIVE]

Operational Neighbor Discovery Problems

Metadata

Publisher
IETF
Doc Type
Informational
Pages
12
Abstract
In IPv4, subnets are generally small, made just large enough to cover the actual number of machines on the subnet. In contrast, the default IPv6 subnet size is a /64, a number so large it covers trillions of addresses, the overwhelming number of which will be unassigned. Consequently, simplistic implementations of Neighbor Discovery (ND) can be vulnerable to deliberate or accidental denial of service (DoS), whereby they attempt to perform address resolution for large numbers of unassigned addresses. Such denial-of-service attacks can be launched intentionally (by an attacker) or result from legitimate operational tools or accident conditions. As a result of these vulnerabilities, new devices may not be able to "join" a network, it may be impossible to establish new IPv6 flows, and existing IPv6 transported flows may be interrupted. This document describes the potential for DoS in detail and suggests possible implementation improvements as well as operational mitigation techniques that can, in some cases, be used to protect against or at least alleviate the impact of such attacks. [STANDARDS-TRACK]
Publication Date
2012-03-01
Status Note
Informational
DOI
10.17487/RFC6583
Link
https://doi.org/10.17487/RFC6583
Author(s)
Igor Gashinsky
Joel Jaeggli
Warren Kumari
Latest version of IETF RFC 6583

Document Versions — IETF RFC 6583

  • ▶ IETF RFC 6583 (2012-03-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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IETF RFC 6583, Operational Neighbor Discovery Problems. Available at https://doi.org/10.17487/RFC6583
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IETF RFC 6583, Operational Neighbor Discovery Problems. Available at https://doi.org/10.17487/RFC6583

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IETF RFC 6583, Operational Neighbor Discovery Problems. Available at https://doi.org/10.17487/RFC6583
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<span class="citation"><cite>IETF RFC 6583</cite>, Operational Neighbor Discovery Problems. Available at <a href="https://doi.org/10.17487/RFC6583" target="_blank" rel="noopener">https://doi.org/10.17487/RFC6583</a></span>

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IETF RFC 6583, Operational Neighbor Discovery Problems
doi: 10.17487/RFC6583
url: https://doi.org/10.17487/RFC6583
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<cite id="bib-rfc6583">IETF RFC 6583</cite>, Operational Neighbor Discovery Problems
<span class="doi">10.17487/RFC6583</span>
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