On Tue, 28 Oct 2008, Chan-Wah Ng wrote:
We have written a draft on the formation of tunnel loops, and possible
approaches on loop detection.
As it is a general problem for tunneling protocols, the draft was
written for intarea. However, there has been recent discussions on the
Mobility Extension WG on the HA loop threat, and even more recently in
3GPP CT1. Hence, this announcement is cross-posted to Mext as well.
We would like to solicit for comments on the draft, and suggestions on
possible way forward.
As you point out, IPv6 tunnel spec already has tunnel encapsulation
limit, which you point out, could be even better. But my concern is
how much this is a problem in practise. Among those IPv6 tunnel
implementations I've looked at, none of them implemented tunnel
encapsulation limit. I wonder -- if they didn't bother to implement
that, what would make them to bother implement this?
It appears there was a -00 I-D in IPng WG in 2002, which the probable
intent of getting the IPv6 tunnel spec to draft standard, but the work
dried up.
--
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
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