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IPv6
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===IPv6 packet fragmentation=== Research has shown that the use of fragmentation can be leveraged to evade network security controls, similar to IPv4. As a result, {{IETF RFC|7112}} requires that the first fragment of an IPv6 packet contains the entire IPv6 header chain, such that some very pathological fragmentation cases are forbidden. Additionally, as a result of research on the evasion of RA-Guard in {{IETF RFC|7113}}, {{IETF RFC|6980}} has deprecated the use of fragmentation with Neighbor Discovery, and discouraged the use of fragmentation with Secure Neighbor Discovery (SEND).
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