From: Mike N. 

On Sun, 30 Jul 2006 22:41:08 -0400, "Geo"  wrote:

>How are you measuring that? MTU as far as I know is 1500 coming across the
>lines from cleveland to macedonia where the news server is hosted.
>
>Try setting MTU in your router to either 1500 or 1492 and see if you still
>see this problem.

  I used the -f (do not fragment) option of Windows XP Ping.

C:\>ping -f -l 1472 news.barkto.com

Pinging w3.nls.net [216.144.1.254] with 1472 bytes of data:

Reply from 216.144.1.254: bytes=1472 time=165ms TTL=114

   A wireshark capture shows the total packet length is 1514 bytes - this
includes the Ethernet headers -

   1472 - ICMP ping payload
         8 bytes ICMP Header
      20  IP header
      14 Ethernet encapsulation
 -------
  1514 bytes total packet length on the wire

      A bit of poking around shows that MTU is only the IP packet, so this
confirms an MTU of 1500.   A 1500 byte MTU packet goes all they way to and
from news.barkto.com.

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