There seems to be some renewed interest in the way path MTU assurance could be done for tunnels, so I re-issued my draft proposal. Some of the things that could probably stand improvement are:
- support for IPv*/IPv* tunneling (i.e., not just IPv6/IPv4)
- widely-applicable means for getting an authenticated probe
response
- support for MTUs larger than ~9KB
- analysis of interactions with 'draft-ietf-pmtud-method'
Is there interest to see this work progress?
Fred
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Subject: I-D ACTION:draft-templin-linkadapt-03.txt
A New Internet-Draft is available from the on-line Internet-Drafts
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Title : Link Adaptation for IPv6-in-IPv4 Tunnels
Author(s) : F. Templin
Filename : draft-templin-linkadapt-03.txt
Pages : 13
Date : 2006-10-22
IPv6-in-IPv4 tunnel endpoints support an MTU of 1280 bytes or larger
via static prearrangements and/or dynamic MTU determination based on
ICMPv4 messages, but these methods have known operational
limitations. This document proposes a new MTU determination
mechanism for IPv6-in-IPv4 tunnels that supports larger MTUs using a
link adaptation scheme with tunnel endpoint-based segmentation/
reassembly and dynamic segment size probing.
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