should TCPs do MTU black hole detection?

Fri Nov 19 02:44:48 UTC 1999

Thus spake Randy Bush
>the choice seems 

>  o when it breaks, the noc gets the call, debugs it, and it gets fixed
                                                           ^^^^^^^^^^^^^
Optimist!

>  o when it breaks, the software does successive guesswork back-offs until
>    it makes it through.  the performance sucks big-time, the customer
>    thinks the isp is at fault, but the noc does not get called and the
>    real problem never gets fixed.

This one is pretty accurate though.
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