Issues with overlapping IPv6 fragments

Document Type Replaced Internet-Draft (individual)
Last updated 2008-10-27 (latest revision 2008-07-14)
Replaced by RFC 5722
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The fragmentation and reassembly algorithm specified in the base IPv6 specification allows fragments to overlap. This document demonstrates the security issues with allowing overlapping fragments and updates the IPv6 specification to explicitly forbid overlapping fragments.


Suresh Krishnan (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)