On one point...
On 29/06/2013 10:44, Templin, Fred L wrote:
...
>> and (b) accepting that strapping the MTU at 1280 is
>> a reasonable short term policy. If (a) progressively pervades
>> the installed base then (b) can be dropped as the years go by.
>
> Once a link sets a 1280 MTU, how will it know that it is now
> safe to increase the MTU? And, once set, how can we expect
> operators to go back and re-set in the future. IMHO, strapping
> the MTU to 1280 everywhere now would become ossified long into
> the future.
It would certainly take years, but I think the end result would be
implementors raising the default to the real link MTU, one stack
at a time. I don't think you find many IPv4 stacks today with
the MTU set low by default.
Brian
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