Phillip Hallam-Baker wrote:

> Past history is a very bad guarantee that problems will not arise in the 
> future.

So, you mean your statement:

: Trust roots have to be valid for at least a decade to be acceptable to
: the application vendor community.

hardly guarantee anything.

> Be liberal in anticipating repeat of past problems,

Indeed.

Unnoticeable cache poisoning by glues is repeated even with
bailiwick and once again with DNSSEC.

> be conservative in
> your expectation that new problems will not arise.

The protection is to make protocols as simple as possible.

The following paper discusses about it to some extent.

http://ftp.csci.csusb.edu/ykarant/courses/f2007/csci530/papers/counterpane-ipsec.pdf

                                                Masataka Ohta

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