North American Network Operators Group
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Re: Strange public traceroutes return private RFC1918 addresses

  • From: Stephen J. Wilcox
  • Date: Tue Feb 03 14:20:26 2004 
> Why large MTU then? Most modern ethernet controllers don´t care if you´re
> sending 1500 or 9000 byte packets. (with proper drivers taking advantage of
> the features there) If you´re paying for 40 byte packets anyway, there is no
> incentive to ever go beyond 1500 byte MTU.

I think its partially due to removal of overhead and improvements you get out of 
TCP (bearing in mind it uses windowing and slow start)

Bit of data on this link that i googled up, 

http://www-iepm.slac.stanford.edu/monitoring/bulk/10ge/20030303/tests.html