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[Ignatios Souvatzis]

On Wed, Dec 19, 2012 at 11:22:58AM +0200, Sander Steffann wrote:
> Hi,
> 
> > Really? Can't you set the MTU to 1280? That should fix it.
> 
> 
> Although everybody on the internet could lower their MTU to 1280,
> it would be easier if they properly send ICMP errors :-)

If everybody would lower their MTU to 1280, the known or hidden
tunnels* would stop to work again. This is just like the professor
who, noticing that the last row in the lecture hall would have a
lot of mumbling students, ordered to remove that row of seats.

*) e.g., non-Deutsche-Telekom DSL bitstream-like accesses (which
mostly travel through Deutsche Telekom last lines) are often carried
from the DSLAM to the ISP's equipment over hidden tunnels. If those
tunnels used an MTU of 1280 octets, the customer would see something
like 1260 or 1240.

	-is