Close Encounters of the ICMP Type 2 Kind (Near Misses with ICMPv6 Packet Too Big )
RFC 7690, “Close Encounters of the ICMP Type 2 Kind (Near Misses with ICMPv6 Packet Too Big )”, is an Informational document published in January 2016 by M. Byerly, M. Hite, J. Jaeggli. The canonical text is published by the RFC Editor.
Abstract
This document calls attention to the problem of delivering ICMPv6 type 2 "Packet Too Big" (PTB) messages to the intended destination (typically the server) in ECMP load-balanced or anycast network architectures. It discusses operational mitigations that can be employed to address this class of failures.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 7690 is hosted at rfc-editor.org. Available in TXT,HTML.
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