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IPv6 Fragment Retransmission and Path MTU Discovery Soft Errors

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Fred Templin
Last updated 2022-09-30 (Latest revision 2022-03-29)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Internet Protocol version 6 (IPv6) provides a fragmentation and reassembly service for end systems allowing for the transmission of packets that exceed the path MTU. However, loss of individual fragments requires retransmission of original packets in their entirety leading to cascading reassembly failures. This document specifies an IPv6 fragment retransmission scheme that matches the loss unit to the retransmission unit. The document further specifies an update to Path MTU Discovery that distinguishes hard link size restrictions from reassembly congestion events.


Fred Templin

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