On Thu, Apr 10, 2008 at 13:39:36 -0400,
Gautam Thaker <gthaker(a)atl.lmco.com> wrote:
From my tests it appears that it takes between 4 to 6 seconds after the
"up" command before my UDP packets actually start going out. The tests
are between two machines with addresses 192.168.0.2 <---> 192.168.0.3.
Any hints welcome. The "/sbin/ifconfig eth2 up 192.168.0.2" command
returns right away, but the interface is not ready to go for a few
seconds. What can this be due to?
It might be waiting for a test to see if any other machine is using that IP
address on that subnet. The time delay seems to be reasonable for a timeout
to a whohas arp request. Looking at the network traffic should allow you
to refute this or add some more suggestive evidence that this is the cause.