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How does XP decide what NIC port to use if you have a multi-homed machine?

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Last Modified: 2013-11-09
Hi guys.

     We have setup an XP multi-homed machine.  We have 3 NIC's in this box with different IP's/different subnets assigned to them.  We want XP to use a specific NIC port as the default for regular traffic.  We are trying to force it to use a specific NIC port but are finding that it seems to randomly pick a port and stick with it.  For example, 192.168.4.100 is the particular IP it always want to use.  We can unplug that NIC port and XP will then pick another NIC port to use.  As soon as we plug the 192.168.4.100 NIC port back in, it jumps back to this port.  In other words, how do we force XP to use a specific NIC port and stick to it?

Thanks for everyones help.

Jason
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