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An interim solution to the Path MTU discovery problem for IPsec gateways

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Michael Richardson
Last updated 2004-07-19
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)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Path MTU discovery depends upon proper respect for the Don't Fragment (DF) bit. IPsec gateways often present an Maximum Transmission Unit (MTU) constraint, and therefore must send ICMP Fragment Needed messages when the DF bit is set. This document proposes to ignore it in certain cases.


Michael Richardson

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