From: Mike N. 

On Sun, 20 Feb 2005 10:53:23 -0500, "Geo"  wrote:

>I don't thing that's completely true, icmp causes an arp request at the
>ethernet level so it's making a connection to the router, I don't think UDP
>does this

   For purposes of traceroute, UDP and ICMP offer nearly identical
performance.  It comes back to primarily whether the application is
designed for parallelism.

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