On Thu, Apr 10, 2008 at 13:39:36 -0400, Gautam Thaker <gthaker@xxxxxxxxxxxx> 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.
