It seems that FreeBSD-7.0 does not use the available MTU

[Chuck Swiger]

On Oct 27, 2008, at 2:53 PM, Eitan Shefi wrote:
> When I change the MTU to a value greater then 1500, for example 3000,
> and then send "ping" with message size 2500, from one host to the  
> other,
> the other host gets more then one ICMP packet, even thaw the message
> that was send is match smaller then the MTU.
>
> I tried to run this test using a different NIC, but I got the same  
> behavior.

You obscured the details of which NICs you actually used, so a guess  
would be that your hardware doesn't support jumbo frames.  If your NIC  
isn't gigabit-speed capable, this is probably expected-- only fairly  
new NICs like em/bce/bge/msk have the capability.

Regards,
-- 
-Chuck